Process for treating waste water for fumaric acid production

A treatment process and technology for producing wastewater, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of undiscovered wastewater treatment methods, incomplete treatment, and serious air pollution and other issues to achieve quick results, low cost, and low investment

Inactive Publication Date: 2003-06-11
山东同济环境工程设计院有限公司
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Problems solved by technology

In the past, some people wanted to use wet oxidation or incineration to treat this kind of wastewater, but the cost was high, the air pollution was serious, and they were not completely treated in the end.
In addition, there is no treatment method for this wastewater

Method used

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  • Process for treating waste water for fumaric acid production

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Embodiment Construction

[0018] The CODcr content in the original wastewater is 100000mg / l, after natural cooling, the CODcr content in the wastewater is 72000mg / l, the pH value is adjusted to 4.0 by adding sodium hydroxide, and the water volume is adjusted in the mixing pool, so that the adjusted CODcr in the water is 12000mg / l l, PH=6.5, there is a heating device in the mixing tank to raise the water temperature to 30-40°C, and then enter the anaerobic biological treatment system.

[0019] The anaerobic biological treatment system adopts the UASB+AF method. The water distribution at the bottom is uniform, and there is sludge inside. The upper part of the structure has a water collection device and a biogas collection device. The wastewater stays in the anaerobic stage for 15 days, and the effluent enters the sedimentation tank. After precipitation, part of the supernatant flows back into the mixing tank with a reflux ratio of 3:1 (reflux water: original wastewater), and the other part flows into the ...

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Abstract

The invention is a processing technique of fumaric acid production waste water. It includes in turn the steps as follows: the pretreatment on original waste water; anaerobic bio-treatment; aerobic bio-treatment; materialization treatment. It adopts the treating technique of combining anaerobic and aerobic bio-treatment and materialization method and overcomes the problem of environmental pollution.

Description

technical field [0001] The invention relates to a treatment process for industrial waste water, in particular to a treatment process for fumaric acid production waste water. Background technique [0002] Fumaric acid production wastewater is a kind of high-concentration organic chemical wastewater. This kind of wastewater has high acidity, PH value of 1-2, high content of organic matter, and its CODcr is as high as 80,000-100,000mg / l. The direct discharge pollution is very serious. In the past, some people wanted to use wet oxidation or incineration to treat this kind of wastewater, but the cost was high, the air pollution was serious, and they were not completely treated in the end. Except this, do not find to have the treatment method to this waste water. Contents of the invention [0003] The technical problem to be solved by the present invention is to process fumaric acid production wastewater with low cost ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/04C02F9/14
Inventor 王院生谷翠芹张钦波
Owner 山东同济环境工程设计院有限公司
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