AOP - Advanced Oxidation Process from H+E

Introduction

AOP - Advanced Oxidation Process from H+E

With BIOFIT®.Oxyd2, H+E introduces a new yet already proven method to reliably remove residues in wastewater from industrial production processes that are difficult or impossible to remove using conventional biological processes.

This new treatment method can be used in the pulp- and paper production industry as well as Oil- and Gas and chemical industries. BIOFIT®.Oxyd2 provides an excellent solution where government regulations for permitted discharge of pollutants are particularly tight while, at the same time, optimised production processes with minimised water consumption generate higher pollution concentrations.

With BIOFIT®.Oxyd2 the wastewater undergoes a multistage low-pressure process that breaks down the originally non-biodegradable substances using an advanced oxidation process (AOP) BIOFIT®.Oxyd2 breaks down the polluting substances to the point where the microorganisms will accept them as food, and therefore take over the remaining part of the degradation process.

Here, the use of ultrasound increases the effective ozone yield, thus reducing operating costs while, at the same time, improving environmental friendliness. The result of this innovative combination of chemical and biological processes is a highly efficient and also cost-effective process to reduce COD level and remove colour. The process enables direct discharge of treated wastewater without any problems.

Process Technology BIOFIT®.Oxyd2

Unlike other suppliers who rely on the total chemical oxidation treatment of this type of wastewater, H+E can provide a less expensive and thus more favourable combination of partial chemical oxidation and subsequent biodegradation of problematic contaminants. These substances typically owe their extraordinary stability to molecular rings or double bonds that, for a process to be successful, first need to be “opened” and converted into short-chain molecules.

H+E uses a combination of ozone and hydrogen peroxide that, at low pressure, targets and cracks the resistant bonds. This is known as partial oxidation. The quantity and residence time of the added ozone is precisely controlled, depending on the presence of other oxidants, such as hydrogen peroxide for example.

This results in fragmentation of the difficult-to-treat contaminants to the point where they can be treated and removed by simple and cost-effective microorganisms. A biological filtration system like, for example, BIOFIT®.F  from H+E then isolate the “cracked” ingredients as biomass that then can be disposed of by combustion. In addition, only water and carbon dioxide remain as harmless end products of the process.

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