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Efficient anaerobic and aerobiotic continuous use industrial wastewater treatment method

An industrial wastewater, anaerobic and aerobic technology, applied in aerobic and anaerobic process treatment, water/sewage treatment, water treatment parameter control, etc. and other problems to achieve the effect of reducing COD value, efficient removal, avoiding toxicity and inhibition

Active Publication Date: 2019-04-16
辽宁中舟得水环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the composition of wastewater pollutants is complex, and the COD content of sewage is high. The above methods and existing technologies are likely to cause microbial poisoning in sewage treatment, make biochemical treatment invalid, and effluent water quality exceeds the standard.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A high-efficiency anaerobic-aerobic continuous use industrial wastewater treatment method, its technical scheme is as follows:

[0020] First, the HPPO propylene oxide industrial wastewater is introduced into the homogenization tank for adjustment and homogenization. The adjustment time of the homogenization tank is set at 114 hours to avoid the impact load of water quality and quantity; Adjust the pH value of the wastewater to 3-5, and then introduce the wastewater into the Fenton reaction system for pre-oxidation. At the same time, continuously add hydrogen peroxide, ferrous sulfate and a Fenton reaction catalyst in the system to oxidize the salty sewage The reducing organic pollutants; the residence time of the sewage in the Fenton reaction system is controlled at 160min; the effluent of the Fenton reactor is added with sodium hydroxide solution to adjust the pH value of the wastewater to 10, and then the precipitant is added for precipitation, and then After removin...

Embodiment 2

[0029] A high-efficiency anaerobic-aerobic continuous use industrial wastewater treatment method, its technical scheme is as follows:

[0030] First, the HPPO propylene oxide industrial wastewater is introduced into the homogenization tank for adjustment and homogenization. The adjustment time of the homogenization tank is set at 68 hours to avoid the impact load of water quality and water quantity; Adjust the pH value of the wastewater to 3, and then introduce the wastewater into the Fenton reaction system for pre-oxidation. At the same time, continuously add hydrogen peroxide, ferrous sulfate and a Fenton reaction catalyst in the system to oxidize the reduction in the saline sewage Permanent organic pollutants; the residence time of the sewage in the Fenton reaction system is controlled at 120min; the effluent of the Fenton reactor is added with sodium hydroxide solution to adjust the pH value of the wastewater to 9, and then a precipitant is added for precipitation, and then...

Embodiment 3

[0039] A high-efficiency anaerobic-aerobic continuous use industrial wastewater treatment method, its technical scheme is as follows:

[0040] First, the HPPO propylene oxide industrial wastewater is introduced into the homogenization tank for adjustment and homogenization. The adjustment time of the homogenization tank is set at 154 hours to avoid the impact load of water quality and quantity; Adjust the pH value of the wastewater to 5, and then introduce the wastewater into the Fenton reaction system for pre-oxidation. At the same time, continuously add hydrogen peroxide, ferrous sulfate and a Fenton reaction catalyst in the system to oxidize the reduction in the saline sewage Permanent organic pollutants; the residence time of the sewage in the Fenton reaction system is controlled at 200min; the effluent of the Fenton reactor is added with sodium hydroxide solution to adjust the pH value of the wastewater to 12, and then a precipitant is added for precipitation, and then aft...

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PUM

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Abstract

The invention discloses an efficient anaerobic and aerobiotic continuous use industrial wastewater treatment method. Fenton oxidation is adopted for preprocessing wastewater, hydrazine hydrate and other reducibility contaminants in wastewater are removed, the purpose of lowering a COD value can be achieved, and toxicity and inhibition of microorganisms in follow-up biochemistry can be avoided. A fenton reaction catalyst is adopted, the catalyst has the high catalytic activity in the aspect of organic contaminant degradation, and iron digestion and loss in the reaction process can be avoided; the preprocessed wastewater enters the efficient anaerobic and aerobiotic continuous use industrial wastewater treatment technology section, and COD in water can be efficiently removed; compared with the traditional technology, and the method is the treatment technology which is low in cost and high in efficiency and can effectively treat HPPO epoxypropane production wastewater.

Description

technical field [0001] The invention relates to the field of industrial waste water treatment, in particular to the field of processing HPPO propylene oxide industrial waste water, and specifically relates to an efficient anaerobic and aerobic combined industrial waste water treatment method. Background technique [0002] Propylene oxide is an important resource in the petrochemical industry, and it is also an intermediate product commonly used in fine chemical products. The demand for propylene oxide can be said to be increasing year by year. At the same time, wastewater treatment methods have always been concerned by people as a supporting process for the production process of this product. [0003] 201310136513.0 proposed a method of pretreatment of propylene oxide wastewater by micro-electrolysis. The process wastewater generated from the production of propylene oxide first passes through the cooling tower to cool the water temperature below 40°C, and then enters the alu...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/56C02F1/66C02F1/722C02F1/725C02F3/30C02F9/00C02F2101/30C02F2209/08C02F2305/026
Inventor 王静叶兆健苗畅通周子卿
Owner 辽宁中舟得水环保科技有限公司