Processing method for reducing and recycling organic waste water and processing system

A treatment method and technology for organic wastewater, applied in water/sewage treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of high treatment cost, high treatment cost and high pollutant concentration
CN105540967AInactive Publication Date: 2016-05-04DATANG INT CHEM TECH RESINST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DATANG INT CHEM TECH RESINST
Publication Date
2016-05-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a processing method for reducing and recycling organic waste water. The method comprises steps: (1) pre-treating waste water to obtain pre-treated out-water; (2) treating the out-water obtained from the step (1) through solid-liquid separation; (3) nano-filtering the out-water obtained from step (2); (4) treating nano-filtered concentrated water obtained from the step (3) to obtain out-water subjected concentrated water nano-filtering, returning to the step (3) for mixing the out-water subjected to concentrated water nano-filtering with the out-water subjected to solid-liquid separation, and performing nano-filtering; (5) performing first reverse osmosis treatment on out-water obtained from the step (3) through nano-filtering; (6) performing second reverse osmosis treatment on concentrated water obtained from the step (5) through first reverse osmosis treatment; and (7) evaporating and crystallizing a concentrated liquid obtained from the step (6) through second reverse osmosis treatment in order to obtain crystallized salt and evaporated concentrated water. The invention further provides a processing system of the method. Through the method and system, waste water is truly reduced and recycled.
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Description

technical field

[0001] The invention relates to the technical field of waste water treatment, in particular to a treatment method for organic waste water reduction and resource recovery, and an organic waste water reduction and resource recovery treatment system for implementing the method. Background technique

[0002] At present, the emission standards of industries such as coal chemical industry, petrochemical industry, and printing and dyeing industry are becoming increasingly stringent. Wastewater reduction and resource utilization have gradually become an inevitable choice for all industries and society. In the actual treatment process, due to the constraints of treatment technology and treatment costs and other factors, the reclaimed water produced in the treatment process is mainly divided into two types: the first kind of reclaimed water is the filtered water after biochemical treatment, and this kind of reclaimed water can be recycled It is subdivided into multi-me...

Claims

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