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Method for degrading CODs (chemical oxygen demands) in high concentration organic amine industrial wastewater by using anaerobe

A technology for industrial wastewater and anaerobic bacteria, which is applied in chemical instruments and methods, water pollutants, water treatment parameter control, etc.

Inactive Publication Date: 2020-01-14
上海市松江一中
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Problems solved by technology

However, there are certain limitations on the control of temperature and pH in the wastewater treatment of high-concentration organic amines, especially when the temperature is low, the biochemical treatment capacity of anaerobic bacteria will be reduced, and the improvement and exploration of the treatment process still needs to be done. further research

Method used

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  • Method for degrading CODs (chemical oxygen demands) in high concentration organic amine industrial wastewater by using anaerobe
  • Method for degrading CODs (chemical oxygen demands) in high concentration organic amine industrial wastewater by using anaerobe
  • Method for degrading CODs (chemical oxygen demands) in high concentration organic amine industrial wastewater by using anaerobe

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Embodiment 1

[0020] ① Adjust the pH value of 1000ml of organic amine industrial wastewater (the average COD concentration is 5120) to 10-11, add 3g of polyaluminum chloride PAC and 3ml of 1% polyacrylamide PAM, and adjust the pH of the wastewater with industrial hydrochloric acid after flocculation and sedimentation for 20 minutes. pH value; respectively pH=5, pH=6, pH=7, pH=8, pH=9, pH=10 six groups of samples; add 0.5g anaerobic bacteria in each group of samples; put six groups of samples in In a plastic wash bottle, airtight. After 24 hours at constant temperature of 30°C, analyze the COD content of the sample.

[0021] Conclusion: The influence of pH value on the COD degradation rate of wastewater is shown in Table 1 and figure 1 As shown, when the pH is 6, the effect of anaerobic bacteria degrading organic matter is the most obvious, and the degradation rate reaches 93.95%; when the pH is 5, the degradation rate is 87.87%, and as the pH increases, the degradation efficiency increase...

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Abstract

The invention relates to a method for degrading CODs (chemical oxygen demands) in high concentration organic amine industrial wastewater by using anaerobe. The method comprises the following steps: adjusting the pH value of high concentration organic amine industrial wastewater to 10-11, adding a flocculant for flocculation and sedimentation, further adjusting the pH value of the wastewater to 6-9, adding 0.5g / L or more of anaerobe for anaerobe degradation, and controlling the temperature to 30-40 DEG C. By controlling pH values and temperatures of the wastewater and the quantity of bacteria,the effective degradation rate of UASB (upflow anaerobic sludge blanket) of an anaerobic biological treatment system can meet operation of a high load, the COD index degradation rate is up to 90% or greater, requirements of wastewater treatment can be met, and the method has good application prospects.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a method for anaerobic bacteria to degrade COD in high-concentration organic amine industrial waste water. Background technique [0002] In the production process of electronic components, a large amount of organic amines are used as swelling agents or cleaning agents. The pollution factor of organic amines that pollutes water bodies during the cleaning process is the increase of COD content. COD is an indirect indicator corresponding to the content of organic matter in water. It represents the amount of oxidant required by strong oxidants to oxidize organic matter in water, which is interpreted as chemical oxygen demand. There are many ways to treat organic matter in water. At present, chemical precipitation is the most common method to remove organic matter in water to reduce COD index. The treatment effect is often not ideal and the removal rate is low. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/38
CPCC02F1/56C02F1/66C02F3/2846C02F9/00C02F2101/38C02F2209/08
Inventor 钱奕雯
Owner 上海市松江一中
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