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Method for improving biological treatment efficiency of waste water containing triclocarban pollutants

A technology for triclocarban and biological treatment, which is used in neutralization water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. question

Inactive Publication Date: 2016-10-26
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, the instability of TCC removal rate in sewage treatment has been reported in the literature, but how to effectively reduce the accumulation of TCC in sludge and improve the biochemical treatment of triclocarban is one of the current research vacancy
[0005] Due to the poor water solubility of triclocarban, it is almost insoluble in water

Method used

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  • Method for improving biological treatment efficiency of waste water containing triclocarban pollutants

Examples

Experimental program
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Embodiment 1

[0038] The simulated urban domestic sewage was treated in the above operating device with the simulated wastewater only added with DMF and the simulated wastewater added with DMF dissolved in TCC. The carbon source is mainly sodium acetate, ammonium chloride is used to simulate ammonia nitrogen in sewage, potassium dihydrogen phosphate is used to simulate soluble phosphate in sewage, and the influent COD is 300-350mg·L -1 , TN is 32~38mg·L -1 , TP is 10~12mg·L -1 , TCC concentration 5mg·L -1 , the concentration of DMF is 0.2mg·L -1 . After stable operation, the NO3- content at the end of the first anaerobic stage in the reactor with only DMF added was 120.08±1.45mg·L -1, the NO3- content at the end of the first anaerobic stage in the TCC wastewater dissolved in DMF was 50.89±2.45mg·L -1 . Visible, adopt the present invention to add DMF in sewage and utilize multi-stage SBR process, TCC can be combined about 60-70mg L at the end of anaerobic stage -1 NO 3 - , to reduce...

Embodiment 2

[0040] According to the device and the method described in Example 1, the daily chemical wastewater with a content of about 50 mg / LTCC was treated respectively. Influent COD is 800~1000mg·L -1 , TN is 26.8~41.2mg·L -1 , TP is 4.3~7.2mg·L -1 , adding 5ml / L of DMF, using a multi-stage anoxic-aerobic-anaerobic SBR process. After stable operation, in the daily chemical wastewater without adding DMF, the TCC content in the final effluent is 5.08±1.2mg·L -1 , TCC content in sludge is 35.27±1.2mg·L -1 , the biological treatment is about 20.65±2.09%, and the final result of applying the treatment of the present invention is: the TCC content in the final effluent is 3.08±0.78mg L -1 , TCC content in sludge 25.27±1.2mg·L -1 , the biological treatment is about 46.46±1.79%. It shows that the efficiency of biological treatment of TCC by applying the present invention is increased by 25.81±0.76%.

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Abstract

The invention belongs to the technical field of environmental protection, and relates to a method for improving biological treatment efficiency of waste water containing triclocarban pollutants. The method particularly comprises the steps of: firstly enabling the waste water containing triclocarban pollutants to enter an adjusting tank, adding 0.1 to 0.3ml / L of DMF (dimethyl formamide) into the adjusting tank to promote subsequent biological treatment on triclocarban, then entering a sequencing batch reactor, and sequentially carrying out processes of anaerobic stirring, aerobic aeration, anoxic stirring, aerobic aeration, anoxic stirring and aerobic aeration; after the reaction is ended, carrying out sedimentation, drainage and sludge discharge so as to control concentration of sludge; after drainage is ended, standing. According to the method disclosed by the invention, based on conventional biological treatment on triclocarban waste water, a DMF modifier is added; by system reaction, content of triclocarban enriched in the sludge is reduced, and biological treatment efficiency of triclocarban is improved; the method has the important environmental ecological significance for biological treatment on daily chemical waste water.

Description

technical field [0001] The invention mainly relates to the technical field of environmental protection, and mainly relates to improving the removal efficiency of triclocarban, an emerging pollutant in waste water. technical background [0002] In recent years, with the economic growth, the rapid development of chemical industry and medical industry, and the improvement of living standards, various chemicals including prescription drugs and biological agents used by humans or animals, diagnostic reagents, aromatherapy, sunscreens, detergents and disinfectants , insect repellants, synthetic musk, etc. are widely used. These unconventional pollutants in daily use are collectively referred to as Pharmaceuticals and Personal Care Products (PPCPs). Among them, triclocarban, as an important antibacterial agent, is widely used in various fields of life including washing because of its high bactericidal efficiency, non-toxicity, non-irritating skin, no allergies, and good skin compa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/36
CPCC02F1/66C02F1/68C02F3/30C02F9/00C02F2101/36
Inventor 王亚利王冬波徐秋翔刘旭冉伍艳馨
Owner HUNAN UNIV
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