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Composite uncoupling agent

A technology of decoupling agent and adsorbent, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., to achieve strong performance

Active Publication Date: 2012-12-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although all uncoupling agents have a common shortcoming, that is, after adding to the system, the activity of sludge will be reduced, but this shortcoming of TCS is more significant, and the "killing" effect on microorganisms is relatively greater, which may be TCS One of the main reasons why other uncouplers cannot be completely replaced

Method used

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  • Composite uncoupling agent

Examples

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Effect test

Embodiment 1～8、 comparative example 1～2

[0028] The composition of each embodiment and comparative example uncoupling agent comprises TCS, all the other components and proportioning ratio are listed in Table 1, and the specific surface area of ​​diatomite used is 30~60m 2 / g, the particle size of the zeolite powder is 40-100 mesh.

[0029] Table 1.

[0030] Soluble Copper Salt Adsorbent TCS: soluble copper salt (weight ratio) (TCS+soluble copper salt):adsorbent (weight ratio) Example 1 copper sulfate diatomaceous earth 1∶0.05 1∶0.05 Example 2 copper sulfate Zeolite powder 1∶0.07 1∶0.07 Example 3 copper sulfate Diatomite + zeolite powder 1∶0.10 1∶0.10 Example 4 copper sulfate diatomaceous earth 1∶0.12 1∶0.20 Example 5 copper sulfate Diatomite + zeolite powder 1∶0.15 1∶0.40 Example 6 Copper chloride diatomaceous earth 1∶0.22 1∶0.50

[0031] Example 7 Copper chloride Zeolite powder 1∶0.20 ...

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Abstract

The invention relates to a composite uncoupling agent for reducing excess sludge in a sewage treatment process by an activated sludge method, which comprises the following components: 3,3,4,5-tetrachloro salicylamide, soluble copper salt and an adsorbent, wherein the soluble copper salt is one of copper sulfate, copper chloride or copper acetate; the adsorbent is one of refined diatomite or zeolite powder or a mixture of the refined diatomite and the zeolite powder; the weight ratio of the 3,3,4,5-tetrachloro salicylamide to the soluble copper salt is 1:0.05-0.25; and the weight ratio of the total of the 3,3,4,5-tetrachloro salicylamide and the soluble copper to the adsorbent is 1:0.05-1.00. The composite uncoupling agent has obvious positive effect, particularly stronger sludge reduction performance. If the same weight reduction rate of the sludge is achieved, the added TCS (tetrachloro salicylamide) can be reduced by 25 to 75 percent, and after the TCS is added into a system, the removing rate of the COD (chemical oxygen demand) is basically not influenced.

Description

technical field [0001] The invention relates to a decoupling agent, in particular to the decoupling agent used for the reduction treatment of excess sludge in the process of activated sludge aerobic treatment of sewage, and the main component is 3,3,4,5-tetrachlorosalicylanilide coupling agent. Background technique [0002] Activated sludge method is currently the most widely used sewage (including urban sewage or industrial sewage) biological treatment technology, although this process has many advantages, such as less investment in infrastructure, good treatment effect, stable operation, etc., but it also has a significant The disadvantage is that a large amount of residual sludge will be generated during operation. The treatment cost of excess sludge is quite high, generally accounting for 25% to 65% of the total operating cost of the sewage plant. Therefore, reducing or reducing the generation rate of excess sludge in the activated sludge sewage treatment process has a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/02C02F3/12
CPCY02W10/10
Inventor 仓一华吴敏赵海云马晓伟姜垒垒吴培云
Owner CHINA PETROLEUM & CHEM CORP
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