Multiple combined technique for high concentration hard-degraded organic waste water treatment

A technology of organic wastewater treatment and combined process, applied in water/sewage treatment, water/sewage multi-stage treatment, oxidized water/sewage treatment, etc. Reduce basic investment and operating costs, improve biodegradability, and enhance the effect of stability

Inactive Publication Date: 2007-09-26
刘景峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, light, ultrasonic and other methods in the physical method cannot convert organic compounds into biodegradable organic compounds; the activated sludge method has low biological load and occupies a large area; the air flotation method has high energy consumption; the membrane separation method has high operatin...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Zhuji Tangjiang Bleaching and Dyeing Factory is a medium-sized printing and dyeing processing enterprise. It has a variety of bleaching and dyeing production equipment for dyeing cloth, yarn, and socks. The daily sewage discharge is 1,000 tons, which contains a large amount of PVA slurry wastewater. Changes in water quality and quantity are complex. COD change range: 600-3000mg / l, PH: 6-12, chroma: greater than 300. Using this process, ferrous sulfate is used for coagulation and sedimentation, and it is only added when the main body of the sewage is desizing wastewater, the pH is adjusted to 8-9, and then aerated for 2 hours, and PAM (polyacrylamide, system Water-soluble high molecular polymer), after sedimentation in the inclined tube sedimentation tank, it enters the pre-exposure adjustment tank and mixes with other dyeing wastewater. At this time, the pH value is just between 6-9. , the effluent is discharged after sand filtration. The test results by the local env...

Embodiment 2

[0029] The sewage of a socks factory in Zhongshan is mainly dyeing wastewater and a small amount of bleaching wastewater. The COD range is 400-1000, the water volume is 400 tons, and the chromaticity is greater than 200. During the pilot test on site, different combinations of processes were implemented. A) Aeration Coagulation pretreatment + aerobic biochemical treatment, B) direct adjustment of acidity (no physical and chemical treatment) + hydrolytic acidification + aerobic biochemical treatment. Both treatment processes can achieve good treatment effects: the COD is stable below 80mg / l, and the chromaticity is less than 15.

Embodiment 3

[0031]Zhongshan Fumei Printing and Dyeing Factory is an enterprise that produces woolen dyeing products. The sewage discharge volume is 4,000 tons per day. The original sewage treatment facilities of this enterprise are in stable operation. A lot of resources were wasted, which also caused cost pressures on enterprises. Its original sewage treatment process is coagulation sedimentation + activated sludge method. Coagulation sedimentation adopts ferrous sulfate + quicklime + PAM. The activated sludge method includes two sections of hydrolytic acidification and aerobic biochemistry. The time is long and the effluent can Up to standard. Due to the introduction of more iron ions during the coagulation and sedimentation process, the effluent has the color of iron ions. In the test, the active oxygen system was used to further treat the effluent. The strong oxidizing new ecological oxygen atoms, ozone molecules and hydroxyl radicals can not only destroy the organic chromogenic subs...

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Abstract

The invention discloses a multiple compositing craft to high density hard degraded organic waste water, which comprises the following steps: (a) proceeding aeration coagulation-aeration micro-electrolytic treatment; adopting intensified and materialized compositing craft; removing most of COD in organic waste water; improving biological property; (b) proceeding anaerobic-hydrolytic decomposition acidify biochemistry treatment; leading organic waste water into highly effective hydrolyze acidifying tank; cutting off macromolecule; increasing biological property; removing part of COD; transiting valent state of nitrogen; (c) intensifying microbe aerobic biological disposing craft; passing the waste water into aerobic tank with intensified microbe; removing remain COD, ammonia nitrogen and SS contaminant; (d) proceeding twice materialized treatment; adopting highly effective active oxygen to sterilization and disinfection; further stripping colourity, COD; reaching recycling water stander through sand filtration.

Description

【Technical field】 [0001] The invention relates to a treatment process for organic waste water, in particular to a multiple treatment process for treating highly difficult and high-concentration organic waste water. 【Background technique】 [0002] With the development of industry, more and more chemical products and processes are applied to production, and the water pollution generated by these products and processes greatly exceeds the self-purification ability of water bodies, causing great pollution to the environment. [0003] Traditional treatment processes mainly include: physical method, physical method is mainly to separate or recover suspended matter in sewage through physical action; physicochemical method is to use physical and chemical processes to separate dissolved pollutants in sewage, and to make water cycle Utilization, etc., such as coagulation precipitation method, air flotation method, membrane separation method, gas stripping method, extraction method, ir...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/72C02F1/461C02F3/30
Inventor 周云斌刘景峰卢粤海
Owner 刘景峰
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