Method for processing reverse osmosis concentrated water by catalyzed internal electrolysis and modified biological aerated filter

An aerated biological filter, reverse osmosis concentrated water technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of secondary pollution and high energy consumption, Achieve the effect of low operating cost, low power consumption and low aeration volume
CN104609658AInactive Publication Date: 2015-05-13TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2015-05-13
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for processing reverse osmosis concentrated water by a catalyzed internal electrolysis and modified biological aerated filter. The method comprises the following steps: 1) performing catalyzed internal electrolysis pre-processing: regulating a pH value of wastewater, and removing organic substances in concentrated water through iron-carbon internal electrolysis reaction; 2) performing two-stage biological filter biological membrane processing: after performing coagulating sedimentation on catalyzed internal electrolysis outlet water, introducing the catalyzed internal electrolysis outlet water into a two-stage biological filter (a denitrification biological filter and an aeration biological filter) to further remove organic substances and ammonia nitrogen in the concentrated water. The method is high in processing efficiency, low in operation cost and capable of effectively removing organic substances which have toxic action to human health and an ecological environment in the concentrated water and improving wastewater biodegradability; the improved aeration biological filter can be suitable for characteristics of high hardness, high alkalinity, high sulfate and the like of the RO concentrated water, so that the water quality of the outlet water meets emission needs and a novel way for processing the reverse osmosis concentrated water is provided.
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Description

technical field

[0001] The invention relates to a method for treating reverse osmosis concentrated water by catalytic internal electrolysis-improved aerated biological filter. The reverse osmosis concentrated water is concentrated water produced in a sewage treatment plant reclaimed water reuse project. It belongs to the technical field of advanced sewage treatment. Background technique

[0002] The reverse osmosis concentrated water will be produced during the process of preparing reuse water by the reverse osmosis (RO) process in the urban sewage treatment plant. The chemical pollutants in it include not only the pollutants in the secondary treatment effluent and the chemicals added during the process operation, It also includes pollutants generated by the possible reaction between the secondary effluent and the added chemicals, such as halogenated or nitrosamine disinfection by-products. In addition to conventional pollutants, there are high-risk toxic substances in reve...

Claims

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