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Wastewater treating and recycling process

A technology for waste water and production waste water, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. And other issues

Active Publication Date: 2013-09-25
ENN ENVIROTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this process is also used to treat dimethyl ether production wastewater, the dimethyl ether production process is different, and the characteristics of the wastewater produced are quite different.

Method used

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  • Wastewater treating and recycling process
  • Wastewater treating and recycling process

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Embodiment Construction

[0027] see figure 1 , the technological process of the present invention is: the production wastewater 21 first enters the grease trap 22 to remove some oil-like by-reaction products, and protects the subsequent biochemical treatment system. The wastewater enters the first biochemical reactor 23 by gravity, and utilizes the first biochemical reaction The high-concentration activated sludge in device 23 removes most of the organic matter. Due to the large amount of sludge, it has strong impact resistance to raw water. The self-circulating sludge has better activity and higher sludge load. The effluent treated by the first biochemical reactor 23 enters the second biochemical reactor 24 by gravity. In this second biochemical reactor 24, the microorganisms on its activated sludge or biological carrier (such as: biologically activated carbon, fly ash, etc.) are in an oligotrophic state, and the sludge load is lower than that of the previous section, and the sludge settling performa...

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Abstract

The invention relates to a method for treating dimethyl ether production waste water, which comprises the following main steps: after the dimethyl ether production waste water is treated through oil removal, carrying out secondary biochemical treatment successively, and then filtering, sterilizing and recycling the supernatant fluid for production after coagulating sedimentation. By adopting a running mode of connecting biochemical treatment units in series, the method ensures high quality of yielding water.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and is a process for treating production waste water produced by methanol gas-phase solid catalyst to produce dimethyl ether and reusing it as supplementary water for industrial cooling circulating water. It can also be used for reuse treatment of similar sewage and Deep processing. Background technique [0002] An important development trend of wastewater treatment is the recycling of wastewater. The shortage of water resources is a long-term problem. China's water resources are already in short supply. With the development of the economy, the demand for water is increasing. Wastewater treatment and reuse It is the only way to alleviate the shortage of water resources. The standard of waste water reuse is higher than the general discharge standard. The latest national "Industrial Circulating Cooling Water Treatment Design Code" GB50050-2007 puts forward clear requirements for recla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F1/50
Inventor 于振生李金来张宝库雷金环
Owner ENN ENVIROTECH CO LTD
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