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Waste water recycling comprehensive processing process

A comprehensive treatment and process technology, applied in the field of wastewater reuse treatment process, can solve the problems of difficult to apply wastewater treatment, complicated operation and maintenance, difficult process conditions, etc., and achieve the effect of complete wastewater treatment, avoiding operation and maintenance, and avoiding mutual influence.

Inactive Publication Date: 2008-11-26
VISBE XIAMEN ENVIRONMENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention provides a comprehensive treatment process for wastewater reuse, the main purpose of which is to overcome the existing membrane bioreactor wastewater treatment process with high energy consumption, difficult control of process conditions, complicated operation and maintenance, and difficulty in applying to various wastewater treatment, etc. question

Method used

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  • Waste water recycling comprehensive processing process
  • Waste water recycling comprehensive processing process
  • Waste water recycling comprehensive processing process

Examples

Experimental program
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Effect test

Embodiment 1

[0021] This embodiment is a comprehensive treatment method for printing and dyeing wastewater. refer to figure 1 , printing and dyeing wastewater A101 passes through A2 / O sump A102, A2 / O regulation pool A103, lift pump A104, A2 / O activated sludge pool A105, A / O anaerobic biochemical pool A106, A / O contact oxidation pool / IUSLS system Pool A2 carries out A2 / O plus A / O process multi-stage biochemical combination treatment, that is, printing and dyeing wastewater and sludge pass through anaerobic → anoxic → activated sludge aerobic → anaerobic → contact oxidation method aerobic multi-stage biochemical combination Treatment not only degrades COD or BOD in water, but also effectively realizes biological denitrification. Through two biochemical processes of nitrification and denitrification, nitrogen-containing compounds in sewage are decomposed into HH by heterotrophic ammonification bacteria. 4+ , and then under aerobic conditions, through the action of nitrous bacteria and nitric...

Embodiment 2

[0031] refer to figure 2 , the process flow of this embodiment is generally the same as that of Embodiment 1, the main difference is: A / O contact oxidation tank A107, secondary sedimentation tank A108 and IUSLS system pool A2 replace the A / O contact oxidation tank / IUSLS in Example 1 The system pool A2 is to separate the biochemical process and ultrafiltration.

[0032] The sludge in the A / O contact oxidation tank A107 flows back to the A2 / O activated sludge tank A105, and the blower A112 blows air for the A2 / O activated sludge tank A105, the A / O contact oxidation tank A107 and the IUSLS system tank A2.

[0033]Considering the fact that sometimes the chroma of dyeing wastewater is very high, although the follow-up IUSLS system pool A2 can remove general organic matter, suspended matter, bacteria, colloids, and large dye molecules, it cannot remove small dye molecules. Therefore, the secondary sedimentation pool A108 is used The front end is used as a mixed flow reaction zone,...

Embodiment 3

[0037] This embodiment is a comprehensive treatment method for leather wastewater, which contains a relatively high concentration of Cr 3+ , sulfide, grease and other substances that inhibit and poison microorganisms, as well as organic matter and solid floating objects. At the same time, the water quantity and quality vary greatly. The purpose of pretreatment is to reduce the load of organic matter and toxic substances in wastewater and ensure the stable and normal operation of the biological system. And make the effluent of the biochemical sedimentation tank reach the water quality standard for discharge.

[0038] refer to image 3 , the effluent from the acidification pool B101 is treated with oil slick B102, the oil is recovered, and the supernatant enters the PH value adjustment pool B119; the degreasing wastewater B103 is filtered through the grid well B104, the oil separation sediment pool B105, and after sedimentation, it enters the sump B106. The water in the sump ta...

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Abstract

The invention relates to a sewage recycling comprehensive treatment technique, including that sewage is pretreated by a physicochemical technique and a biochemical technique; the pretreated sewage is separated by an immersed ultrafiltration solid-liquid separation system; ozone is used for eliminating part of organic matter and bacteria in the ultrafiltration membrane permeate liquid generated in the previous step; after being treated in the previous step, organic pollutant in the water is further removed by adopting activated carbon for filtering; after the treatment in the previous step, the water carries out reverse osmosis treatment to obtain permeate water of a reverse osmosis membrane, that is, reuse water. All sewage treatment techniques adopted by the invention are mutually matched, have reasonable sequence and play own roles independently, thus preventing the sewage treatment techniques from affecting with each other, allowing the equipment of each sewage treatment technique to achieve optimal treatment effect and leading to more complete sewage treatment.

Description

technical field [0001] The invention relates to a waste water reuse treatment process, in particular to a waste water reuse comprehensive treatment process combining multiple waste water treatment methods. Background technique [0002] The traditional sewage treatment process is only physical and chemical or biochemical treatment to meet the discharge standards, which wastes water resources and cannot guarantee the stable discharge of the system. In the case of increasingly stringent environmental protection requirements, especially in some areas with serious environmental pollution. Local pollutant discharge standards higher than national standards, the traditional treatment process can not meet the discharge requirements. Contents of the invention [0003] The present invention provides a comprehensive treatment process for wastewater reuse, the main purpose of which is to overcome the existing membrane bioreactor wastewater treatment process with high energy consumption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/78C02F1/28C02F1/44
Inventor 王俊川江良涌
Owner VISBE XIAMEN ENVIRONMENT TECH CO LTD
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