H+E Water Treatment - News & Press

Press release April 2018

Aquarion Group, to which H+E GmbH belongs, Gets 15 Million Euro Convertible Loan Notes from Sustainable Growth Fund (“SGF“) to Fully Fund the Growth of the Group through Acquisitions and Organically


Also Strengthens Its Balance Sheet by More than 6 Million Euros Thanks to the Support by
Green Growth Fund 1 and Green Shoots

Zurich. Sustainable Growth Fund (“SGF”), a Convertible Loan Note provider, has signed a deal with Aquarion AG (Aquarion Group) in which Aquarion will get funding of 15 million Euros to accelerate its growth. The funds will be used for project financing and working capital but predominantly to fund acquisitions to increase Aquarion Group’s revenues to more than 100 million Euros and achieve an EBITDA margin of more than 10%.

Aquarion Group’s immediate focus will be on procuring ownership of a disruptive technology for treatment of heavily contaminated wastewaters, for access to new geographic markets, and to expand its Products and Systems portfolio in order to increase the company’s recurring revenue stream. With this in place, Aquarion Group then aims to be in the position to complete an IPO in 2019.
In addition to the SGF funding, Aquarion AG has strengthened its balance sheet in the amount of more than 6 million Euros thanks to the support of its major shareholder Green Growth Fund 1 (GGF 1) and its biggest lender Green Shoots.

Karl Michael Millauer, CEO of Aquarion AG, said, “Securing this growth capital is an important step in advancing Aquarion’s plan to become a bigger international player in the industrial water sector. I am extremely excited and motivated by this development and the new relationship with SGF, a fund focused on growth capital. With SGF, Aquarion obtains a partner who understands our business very well. With a planned IPO in 2019, we will have the
opportunity to get considerably more equity capital, which will enable us to continue to grow. I also highly appreciate the support we have gotten from GGF and Green Shoots to get the capital basis for the scheduled expansion and see this as trust and confidence in our future success.”

Jennifer L. Wick, Co-founder and Managing Partner of SGF, said, “We are pleased that Aquarion has decided to use our source of financing to enable the growth of the group. We like the water sector and see it as a real growth market, and therefore, we support Aquarion in its growth plans.”

Jochen Wermuth, investment advisor to GGF, said, “We have invested in Aquarion since 2013 and have supported the company in growing its revenues over 5x already. At the same time, the company delivered significant positive environmental impact. We are very pleased about the Convertible Loan from SGF, which will give Aquarion Group the needed fuel for further growth.”

About Aquarion Group
A total enhanced EPC solution provider, Aquarion Group is a leading provider of advanced
water systems, solutions and technologies for the oil & gas industry, energy sector,
semiconductor sector and other process industries as well as for the potable water market.
Aquarion has operations in Germany, Switzerland, Italy, UK, the UAE, Chile, Russia and
Southeast Asia. Aquarion Group has established a competitive advantage through acquisitions
of companies with breakthrough Intellectual Property around the world as well as through inhouse
R&D related to green- and brownfield project solutions. Aquarion Group offers highly
competitive solutions across all three major approaches of water purification: chemical,
biological and physical.

About Sustainable Growth Fund SCSp, SICAV-SIF (SGF)
SGF is a Luxembourg special limited partnership established to make private equity investments
in companies within the growth stage of the sustainable and efficiency sector distributed across
six key verticals: energy generation, water treatment, waste water treatment, waste
management, distributed grid and efficiency. Investee companies such as Aquarion have proven
commercial technologies and expected near-term paths to an IPO and require expansion capital
to unlock the value at this stage. SGF’s Management Team is comprised of professionals with a
strong track record and over 20 years of combined experience in private equity investing and
advising especially within the renewable, clean-tech, and sustainable sectors.

About Green Growth Fund 1 (GGF)
GGF invests in German and Northern European SMEs (Small Midsized Enterprises) which make
their clients more resource efficient. It supports them to sell their goods and services in
emerging markets which are growing strongly and currently make up some 75% of global
growth already. They consume on average 4x as much energy and 8x as much CO2 emissions as
Germany per unit of GDP. Therefore, exporting resource efficiency to emerging markets has
proven to be a strategy which leads to strong growth, high margins and a strong positive
environmental impact at the same time. GGF’s investment adviser, Wermuth Asset
Management GmbH, is headquartered in Berlin, the epicenter of leading engineering talent and
policy frameworks for the global “green industrial revolution” - the nexus of IT-enabled
resource efficiency, competitive renewable energy, competitive emission-free transport,
fintech, sustainable agriculture and circular economy business models


Media Contact:
Ann Seamonds

Press release December 2017


H+E gets certified ISO 9001: 2015

After having been ISO 9001: 2008 certified for years, we have now upgraded and improved our quality system to the requirements of the new ISO 9001: 2015.

The audit was successfully completed – here are a few excerpts from the audit report:
H+E GmbH has a sophisticated management system that fully complies with the requirements of ISO 9001: 2015.
All employees are appropriately trained. The infrastructure and the working environment ensure optimal processing of the plant projects.
The traceability of services is demonstrably ensured throughout the entire process.

For many years, H + E has been one of the world's leading suppliers of technologies and processes for holistic water management. Today we face even the most difficult problems of industrial process water treatment and wastewater treatment. We can count on our vast experience and the strong potential of our in-house research and development.

Customers from all industries, such as semiconductors and solar, food and beverages, paper and pulp, power generation, mining, chemical and petrochemical, and pharmaceutical, trust our many years of experience and appreciate the trustful dealings with each other and our diverse services:

- Sales, technical advice, planning, installation, commissioning, service, all from one source
- Decades of experience with solutions that exactly fit the needs of our customers
- Reliable advice to our customers as the basis of our success
- Worldwide experience of many years
- Long-term cooperation with technologically leading suppliers
- Optimisation of existing plants
- Development of innovative new products

For more information about our company, please visit the following pages of this webseite.


Press release October 2017 II


International Sugar Journal (ISJ) reports on H+E

26.09.2017. "State-of-the-art wastewater treatment for Sugar Factory Osijek in Croatia"

Please click here for the complete article.


Press release October 2017


HAGER + ELSÄSSER receives order for biological treatment
of 600 m³/h industrial wastewater in Bulgaria

Stuttgart. HAGER + ELSÄSSER has received the order for the biological sewage treatment plant for the Bulgarian viscose pulp producer Svilocell.

In order to meet the future EU-imposed discharge limits into the Danube, the hitherto purely mechanical sewage treatment plant will be expanded by a biological treatment.

Svilocell ultimately decided upon H+E due to the company’s many years of expertise evidenced in almost 80 realised plants in the pulp and paper industry and the very positive experiences of the long-term reference customers. In addition, the available space can be utilised optimally by integrating the new process compactly into the existing plant layout.

Before the mechanically purified wastewater is transferred to the two-stage biological purification, it is first cooled in an indirect cooling system to the temperature compatible with the biological process. The balanced combination of the BIOFIT®.H floating bed and the BIOFIT®.C aeration results in a cost-optimised solution.

The ventilation system AEROFIT.V in particular contributes to the intrinsic value and energy efficiency of the new wastewater treatment system. It allows for trouble-free operation over a period of decades with a consistently high oxygen yield.

Biochips with an especially high specific growth area are used as biofilm carriers.

The chosen process line will equip Svilocell with a highly robust and efficient wastewater treatment facility from 2018 onwards, in order to fully meet the requirements for environmental protection.

H+E also offers other process technologies for the pulp and paper industry, such as the cost-effective and energy-efficient mechanical treatment FLOCOMAT®.T or as tertiary stage the BIOFIT®.Oxyd2 or FLOCOPAC® process to reduce resistant COD.


Press release September 2017


HAGER + ELSÄSSER receives order for modernisation of a biological
wastewater treatment plant for theKnauf Company in Russia

Stuttgart. HAGER + ELSÄSSER, one of the leading suppliers on the international market for industrial process and wastewater treatment, together with its Russian  affiliate OOO H+E Rus, has received the order for the modernisation of  a biological wastewater treatment plant for Knauf Petroboard AG in Russia.

This modernisation of the sewage treatment plant at "Knauf Petroboard AG" is necessary in order to improve the system for the introduction of clarified wastewater into fish waters. Hager + Elsässer was able to acquire this customer both on the basis of its many years of experience and its stable network in Russia as well as thanks to its Russian subsidiary OOO "H+E Rus". Of course, the process concept for the renewal of the wastewater treatment plant was also convincing. Further deciding factors were that Hager + Elsässer will undertake the modernisation of the sewage plant concurrently with that of a board machine of the customer's and that it can ensure the strict limit values for purified wastewater to be discharged into fish waters.

As one of the first three steps of the modernisation measures, two new drum screens and two clarifiers FLOCOMAT®.T will be installed. In addition, the two existing pre-clarifiers will be converted into a combination of high-load biology BIOFIT®.H and low-load biology BIOFIT®.SC, the ventilation station will be expanded, and the existing second-stage aeration tanks will be retrofitted with a new ventilation system AEROFIT®.V. Furthermore, a disinfection plant will be installed upstream of the purified sanitary water discharge into the river. Thus, the customer has opted for a compact solution that has been widely tested in the paper industry.

The special feature of the process combination lies in the fourth modernisation step – a so-called tertiary cleaning stage. It consists of two lines of a BIOFIT®.HAC floating bed with powdered activated carbon dosing system and a FLOCOPAC® high-performance contact sludge inclined-plate clarifier each, which are implemented upstream of the UV disinfection. This stage makes it possible to achieve the required low discharge values. By integrating already existing components of the customer’s, the investment sum could also be reduced, which is a further advantage.

At present, design work is underway to implement the first stage, and the modernisation of treatment facilities will begin by the end of 2017.


Press release August 2017


Hager + Elsässer awarded order for complete water supply and
wastewater treatment in the PCB manufacturing industry

Stuttgart. Hager + Elsässer, one of the leading suppliers on the international market for industrial process and wastewater treatment, has been awarded an order for the construction of a complete process water and wastewater treatment plant by the leading PCB manufacturer Unimicron Germany (formerly RUWEL International).

H+E was able to convince the customer on the basis of its many years of experience and a proven concept adapted to the current needs.

The goal of the adapted concept is to increase flexibility, cost-effectiveness and plant availability by implementing experience values. For example, the opportunities for resource recovery have been expanded, in order to be able to produce even more economically and at the same time more environmentally friendly.
The long-standing, successful and reliable cooperation was also an important argument for the customer to opt for H+E once again.


Press release May 2017


HAGER + ELSÄSSER is awarded contract for complete
wastewater treatment in Croatian sugar industry

Stuttgart. HAGER + ELSÄSSER, one of the leading providers of industrial process and wastewater treatment on the international market, has been awarded a contract for a complete wastewater treatment for a sugar producer in Croatia.

With more than 40 installed wastewater treatment systems worldwide – including plants in Lithuania, Egypt and Chile – Hager + Elsässer have extensive experience with the characteristic wastewaters from beet sugar production.

The sugar industry uses flume water circuits for the cleaning of the delivered sugar beet. Lime is added to the flume water in many countries (alkaline mode of operation), which reduces odour pollution and improves the settleability of the washed-off soil. In addition, the alkaline mode operation reduces corrosion in the pipelines and thus keeps maintenance costs low.

But using lime in the flume water and juice purification (for the precipitation of impurities) results in wastewaters with high calcium content and a strong tendency towards lime precipitates. These precipitates lead to extensive operational problems in anaerobic wastewater treatment and to clogging of the membrane aerators in aerobic wastewater treatment, thus considerably reducing the capacity of the treatment plant.

Hager + Elsässer offers well-thought-out and field-proven solutions for the issue of lime in sugar industry wastewater treatment. These technological innovations include, for example, ANAFIT®.CS, one of the water treatment solutions from the ANAFIT® series. Based on the anaerobic contact sludge process, ANAFIT®.CS is a reliable, proven and effective process for the treatment of the calcium-rich, organically highly loaded wastewaters from the sugar industry.

H+E also offers other process technologies for wastewater from the sugar industry: For example, the BIOFIT®.N treatment for nitrification/denitrification in an aerobic stage. Here, H + E's specially developed aerators are used which, even at high calcium concentrations, reliably supply oxygen over years without requiring any maintenance.

In Croatia, industrial direct dischargers have faced stricter requirements in recent years because of EU accession. Due to this issue, the client decided to invest in a sewage plant with an anaerobic and an aerobic stage. Hager + Elsässer were able to convince the customer of their approach to wastewater treatment by organizing a visit to a nearby reference plant and by taking into account local conditions.

The wastewater treatment plant is currently at the Basic Engineering stage and will go into operation with the 2017/18 campaign.


Press release April 2017


HAGER + ELSÄSSER is awarded contract for aerobic stage
of industrial wastewater treatment plant in Scandinavia

Stuttgart. HAGER + ELSÄSSER, one of the leading providers of industrial process and wastewater treatment on the international market, has been awarded a contract for the aerobic stage of an industrial wastewater treatment plant in Scandinavia.

In order to save energy, the client’s aerobic wastewater treatment needed to be completely refurbished.  The existing wastewater treatment ponds with surface aeration consumed a considerable amount of energy and no longer conformed to the current stage of technology.

Thanks to their many years of experience in the sugar industry and their detailed knowledge of the water cycles, Hager + Elsässer could convince the client with their concept for the revamping of the aerobic stage. Another deciding factor for the customer was the fact that Hager + Elsässer could precisely break down and warrant the energy saving.

With the aerobic BIOFIT®.N treatment for safe removal of nitrogen via nitrification/denitrification, the customer has chosen a compact solution which has been tested and proven many times in the sugar industry. The fine bubble membrane aeration of the activated sludge basin results in a substantial reduction in energy consumption and therefore leads to a rapid return on investment for the client.

Yet another advantage: By integrating existing components owned by the client, the total investment amount could be reduced.

The aerobic stage BIOFIT®.N is to go into operation right on schedule for the 2017/18 campaign.

H+E also have further process technologies for the sugar industry in stock: ANAFIT®.CS, an established two-stage anaerobic process, is very successfully employed in sugar factories where standard anaerobic reactors cannot be operated reliably because of the extremely high calcium carbonate precipitation.


Press release March 2017 II


AP&S NEWS page reports on HAGER + ELSÄSSER®

28.03.2017. "AP&S International GmbH achieves competitive advantage by investing in a new ultra-high purity water system"

Click here for the complete article (28.03.2017).


News R&D, March 2017


HAGER + ELSÄSSER provides plant solutions for the reduction of sulphate freight from mining wastewater

The reduction of the sulphate freight from mining wastewater is one of the increasing issues that require an effective treatment strategy adapted to local conditions. For this purpose, H + E has developed various treatment concepts based on membrane and precipitation processes. Specially adapted antiscalants in combination with reverse osmosis and nanofiltration, especially in the high-pressure area for highly saline wastewater, enable compact and mobile system solutions even in a difficult operating environment. Through the use of the appropriate separation technology, product recovery is also possible. H + E has the technical capabilities to develop tailor-made plant concepts.


H+E at IFAT 2016 - interview

Interview with Stefan Raichle, key market manager at H+E GmbH, at IFAT 2016 in Munich.
Interview with Oliver Kopsch, project director at Membran-Filtrations-Technik GmbH, at IFAT 2016 in Munich.

Press release February 2016


HAGER + ELSÄSSER wins contract totaling 6.4 million euros
for wastewater treatment systems in the sugar refining industry

Stuttgart. HAGER + ELSÄSSER, one of the leading providers in the international market for industrial process water and wastewater treatment solutions, has been awarded three contracts totaling 6.4 million € to provide wastewater treatment plants for sugar refining plants in the MENA region.

These contracts follow the earlier award of a 3.3 million € contract by a leading beet sugar production plant in Poland. Now in operation, that plant has completed successful operations in both campaigns, or production cycles, since its commissioning.

“The awarding of these contracts reflects the confidence that leading sugar producers around the world have in Hager+Elsaesser’s ability to bring superior experience and technology solutions to their projects. The rising demand for sugar around the world, coupled with growth in the number of projects that we have recently won, is certainly sweet news for our company,” said Thomas Will, Chief Executive Officer of H+E.

An Aquarion Group company, H+E has extensive experience in the food and beverage industry and has been a leading provider of wastewater treatment systems for the sugar industry for over 30 years. With approximately 40 installed systems around the world, H+E combines this industry-leading experience with innovative technologies, as such as chemical-physical-mechanical pre-treatment, developed to accommodate the specific demands of this industry.

Among these technology innovations is ANAFIT®.CS, one of the water treatment solutions in H+E’s ANAFIT® line. Based on the anaerobic contact sludge process, ANAFIT®.CS is a reliable, proven and highly effective method for treating the wastewaters characteristic of industrial production processes in the sugar industry. The sugar industry uses flume water circuits for the cleaning of processed crops. Abundant lime is added to the flume water prior washing the sugar beets, which reduces odors and results in a better settling of soil. In addition, the lime reduces corrosion in the pipework and therefore keeps maintenance and service costs down. However, it also results in wastewaters with high calcium content and a tendency for mineral precipitation, which can rapidly clog the equipment and degrade performance of the overall treatment process.

With its proven two-stage process, ANAFIT®.CS overcomes the limits of conventional wastewater treatment systems in dealing with these very large amounts of calcium carbonate precipitates.

H+E also offers additional process technologies for sugar production including BIOFIT®.N treatment for the safe removal of nitrogen by nitrification / denitrification in an aerobic stage.

Press release January 2016

Hager + Elsässer implement prestigious project for Russian semiconductor producer


Ultrapure Water System Starts Operation

Stuttgart. In November 2015, system manufacturer Hager + Elsässer put a UPW (Ultra Pure Water) system into operation at Russian semiconductor manufacturer Angstrem-T. The system, which was built as part of a new construction for the ultra-modern wafer manufacturer, produces 100 m3 of ultrapure water per hour. Hager + Elsässer offered the client a convincing system concept that significantly reduces the use of chemicals and produces ultrapure water with very low residue content. This was one of the largest projects ever to be implemented for the semiconductor industry in Russia.

Water is one of the most important components in the manufacture of microelectronic devices. Ultrapure water is used to produce chemical solutions, to pickle workpieces and for other technological processes as well as for rinsing the crystals on circuit boards. The water used in the microelectronic industry must fulfil particularly stringent quality requirements.

The current standards for the manufacture of semiconductors recognise four water types, depending on the size of the semiconductor elements being manufactured with the help of the water. The Angstrem-T UPW water system in Zelenograd produces ultrapure water for elements with sizes of 90 to 130 nm. Reserve has also been provided in the event of a transition to technologies with structure sizes of 65 nm and less. Because the smaller the nanometre range of the products to be manufactured, the stricter the purity requirements for the water employed in the manufacturing process. "In the semiconductor industry, the ultrapure water quality always has a crucial influence on the product quality and manufacturing process efficiency. After all, 30% of the processes involve rinsing silicon plates," explains Anatoly Sukhoparov, managing director at Angstrem-T AG. Planning for the new system began in April 2013. "We have been successfully working with Hager + Elsässer since the early 1990's. For this job, we were once again able to find an optimal solution that offered both convincing costs and strong quality," reports Anatoly Sukhoparov.

The system installed by Hager + Elsässer consists of a number of treatment steps that bring the water up to the required quality: Preliminary cleaning, demineralisation, in-depth cleaning (deionisation), degassing, treatment with UV light, ion exchange and ultrafiltration. A multi-media filter and an active charcoal filter are used for the pre-treatment of the raw water. In the make-up process step, the pre-cleaned water is freed from unwanted particles, organic and inorganic impurities and ions by means of a process that combines reverse osmosis and electrodeionisation (EDI). A special boron polisher ensures that the boron specifications called for by the "International Roadmap for Semiconductors" guidelines are met. The concluding final cleaning takes place in the so-called polishing loop. “Our two-stage procedure provides significantly improved treatment results with regard to purification. It also allows for much longer treatment periods and therefore ensures savings achieved due to less frequent resin changeovers,” says Eugen Martens, Project Manager of Hager + Elsässer.

The new UPW system removes virtually all inorganic and organic accompanying substances and ions from the groundwater used.

Thus, the procedure meets the stringent requirements with regard to minimising residues.

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Press contact:
Schott Relations GmbH
Ariane Quade
Lindenspürstraße 22, D-70176 Stuttgart
Tel.: + 49 711/16446-43
E-Mail: ariane.quade@schott-relations.com

Press release June 2015

HAGER + ELSÄSSER presents new concept for the production totally free of waste water


Innovative ZLD Hybrid System for maximum cost efficiency

Stuttgart. The model for production totally free of waste water - zero liquid discharge (ZLD) - is increasingly being applied in a wide variety of industries. Instead of discharging water which is as clean as possible, the aim in future is for production processes to discharge no water at all. Together with its affiliate Membran Filtrations Technik (MFT), Hager + Els‰sser (H+E) has now developed a new ZLD process which uses a series of innovative filtration and separation technologies, including three reverse osmosis stages to reduce the subsequent evaporation of residual waste products to a minimum.

Around 400 ZLD plants are already in operation around the world. The underlying aims and motives differ from region to region. For example, in areas of low rainfall such as the South of France the prime need is independence from the local water supply, whereas in Germany ever more stringent environmental stipulations have been imposed, such as on salt loads in waste water. In countries such as India, or regions like South America there are frequently no effluent treatment plants so that ZLD take on these functions. On the other hand, companies in European countries use ZLD processes for post-processing in the actual effluent treatment system.

Previously, the considerable investment and operating costs have discouraged the use of the technology. In particular, the aspect of high energy requirements played a role here. Hager + Elsässer, one of the world's leading solution suppliers in the field of holistic water management, has now teamed up with its affiliated company MFT (Membran-Filtrations-Technik) to develop a new ZLD process that significantly reduces energy requirements by sharply minimizing the evaporation stage: ZLD.eco.

High-pressure membrane stage with the circular disc module

At the heart of the system is a new high-pressure reverse osmosis stage. This involves a pre-treatment process, which can either be chemically-physically or biological depending on the user, and an ultra-filtration stage to filter out residual organic material followed by multi-stage membrane technology designed to concentrate non-organic waste material more densely. After the first two reverse osmosis stages entailing pressures of up to 80 bar, the residual concentrate contains around 20% of the total waste water volume. This is then subjected to a further reverse osmosis stage. In this third reverse osmosis stage, pressures of up 200 bar are reached. This stage uses a special module developed by MFT known as the circular disc module (CD module). Unlike other modules using a meander flow pattern, the water takes a circular path through the CD module, thereby reducing pressure losses.

The high pressure warms the concentrate to approx. 70∞C. This is then vaporized in the subsequent low pressure stage, which acts with the membrane technology to form a 'hybrid system', giving the concentrate a manageable consistency. The thermal energy is fed back into the system and used to increase energy efficiency. This significantly reduces the energy requirements of the entire system. The volume of waste products still present after the maximum pre-concentration produced by the high-pressure membrane technology is significantly lower than with conventional processes. As a result, the evaporation stage with ZLD.eco can be considerably shorter.

Compared with conventional systems without pre-concentration, ZLD.eco requires about 20% less energy. Also, since the evaporation system is smaller, less cooling energy is needed for the condensation process. These savings can amount to as much as 80%. Further savings can be achieved thanks to the modular construction of the system. The savings in terms of staffing are around 20%, while commissioning costs are also lower by 20%. And last but not least, the reduced consumption of chemicals consumption is an additional advantage. Thanks to savings on different levels, investments in ZLD.eco have a very short payback periods.

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Press contact:
Schott Relations GmbH
Dr. Mona Clerico
Lindenspürstraße 22, D-70176 Stuttgart
Tel.: + 49 711/16446-16
E-Mail: mona.clerico@schott-relations.com

Press release June 2015

H+E presents optimized AOP procedure


Reduced ozone input lowers operating costs

Stuttgart. Hager + Elsässer (H+E), one of the leading solution suppliers worldwide for holistic water management systems, draws on over 20 years of experience with the Advanced Oxidation Process (AOP). Here, the cleaning of difficult waste water takes place by oxidation with strong oxidizers like ozone or peroxide and an optional biological cleaning stage. At the Achema 2015, H+E will be presenting an improved AOP procedure that lowers the operating costs by reducing the energy input and the specific share of ozone used, and is at the same time more environmentally friendly than conventional systems. This is achieved by a multistage low-pressure process of the ozone input and optimized process operation, in combination with a biological stage.

Legal specifications on pollution levels in waste water are increasingly putting the productive industry, but also municipalities under pressure. Whereas the limiting values for materials contained in waste water have been reduced continuously, industrial companies want to produce with less and less water, which in turn results in higher concentrations of persistent substances. These developments particularly affect the paper and cellulose industry as well as petrochemicals. These sectors release highly persistent substances, which cannot be degraded biologically without further measures. With the Advanced Oxidation Process (AOP), persistent substances, the so-called hard COD (chemical oxygen demand) are oxidised by the use of ozone. As distinct from other providers that rely on an AOP process with full chemical oxidation or alternatively on an adsorptive or precipitative method with very high residual material quantities in each case, H+E uses a combination of chemical and biological processes.

Here, the contents are cracked in a first stage with reduced energy and oxidizer input, just enough to make them accessible to biological degradation. The persistent, hard-to-remove substances include molecular rings or double bonds. The structures must therefore be opened and converted into short chain molecules. Here, H+E uses multistage low pressure feed systems that are characterized by a low energy requirements and are simultaneously regulated in such a way as to minimize the ozone requirements. The efficient input of chemicals is supported by a system creating the largest possible surface area renewal in the reaction zone, combined with low energy input. As a result, and with the regulated ozone input and corresponding short residence times, the limitation of the reaction to the breaking open of the double bonds is achieved.

The fragments resulting from this process can then be economically degraded biologically in a second stage. With a biological filtration, the BIOFITÆ.F process from H+E, the fragmented materials are eliminated; what remains is carbon dioxide (CO2) and water as well as very little biomass.

As an alternative, the cracked waste water can be fed back into an upstream biological system where it is also cleaned.

In total, the AOP process from H+E GmbH more than halves the energy and ozone requirements.

Moreover, the production of ozone from pure oxygen and energy results in a large quantity of remaining oxygen. Under particular catalytic boundary conditions, this supports the direct oxidation process. In any case, this is also used for the supply of oxygen to the biological process, thereby also raising the overall economic performance of the process.

Since this reduces the production of ozone-oxygen mixture, the operating costs and the environmental emissions of the process decrease. In long-term scenarios, despite higher investment costs, the process developed by H+E is lower in overall costs than other AOP processes.

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Presse contact:
Schott Relations GmbH
Dr. Mona Clerico
Lindenspürstraße 22, D-70176 Stuttgart
Tel.: + 49 711/16446-16
E-Mail: mona.clerico@schott-relations.com

Press release April 2015

Hager + Elsässer at Achema 2015, Hall 4.0, Stand A15


Innovations in industrial water treatment

Stuttgart. Hager + Elsässer (H+E) is one of the world's leading solution providers in holistic water management. At Achema 2015 the company will present its process for cleaning and recycling effluent from production plants. With this process H+E is providing industrial companies with a solution to challenges which are arising on the one hand from a growing market for higher quality products and on the other from stricter limit values. With its in-house designed ZLD process, H+E offers a particularly cost-efficient, environmentally friendly and space-saving alternative to conventional treatment technologies, thus optimizing closed-loop water systems for industry.

The new process is in fact a compact and well-conceived combination of processes that enables the creation of material cycles with the aim of achieving effluent-free production. The technology can be used to produce water of all grades from clean to ultra pure in any industry, for example the chemical, mining, petrochemical, power generation, metal processing and food production industries, to name but a few.

Its advantages include the extreme robustness of the system and a significantly reduced energy requirement. The prescribed limit values for water, concentrates/waste, salt concentration, recyclable materials, acids and alkalines can be reliably achieved with this new process. The complete system is also smaller than conventional ZLD processes, thus reducing investment costs by around 20 percent. Moreover, the system is constructed in such a way as to significantly reduce the time required for assembly and commissioning.

H+E will also be presenting its optimized AOP process at Achema. AOP is short for Advanced Oxidation Process and describes a process used to treat wastewater streams that are not degradable by means of simple biological processes. This is the case in the paper and pulp industry, for example, where the use of bleaching processes is rising, resulting in more and more recalcitrant residues in wastewater. AOP is also used in the petrochemical industry, where biotoxic substances hinder wastewater treatment. Unlike other solution providers which in such cases utilize total chemical oxidation of poorly degradable substances, H+E uses a combination of chemical and biological processes. Firstly, combined oxidants are utilized to convert the substances into biologically available substances, after which biological filtration (BIOFIT.F) is used to eliminate them cost efficiently. This results in water of a dischargeable quality, meaning that the level of waste products in the water is below the limit set by the authorities. In contrast to AOP treatment processes that use chemicals alone, this combined process reduces ozone input by four fifths, thus the operating costs are lower. At the same time, the process developed by H+E is also more environmentally friendly due to its reduced requirements for ozone and energy. For this reason the Umweltbundesamt, Germany's main environmental protection agency, funded its introduction at a large German paper manufacturing company.

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Presse contact:
Schott Relations GmbH
Dr. Mona Clerico
Lindenspürstraße 22, D-70176 Stuttgart
Tel.: + 49 711/16446-16
E-Mail: mona.clerico@schott-relations.com