Compounded decoupling agent

A technology of uncoupling agent and zeolite powder, applied in 3 fields, can solve the problem of reduced sludge activity and achieve the effect of strong performance

Active Publication Date: 2010-06-23
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The invention provides a compound uncoupling agent, which uses 3,3,4,5-tetrachlorosalicylamide (TCS) as the main component, and can effectively solve the pr

Method used

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  • Compounded decoupling agent

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Embodiment 1～8

[0018] The uncoupling agents of each example were prepared according to the required ratio, and the zeolite powder with a particle size of 40-100 mesh was used. The weight ratio of TCS to zeolite powder is shown in Table 1.

[0019] Table 1.

[0020]

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Abstract

The invention provides a compounded decoupling agent, which is used for performing reduction treatment on excess sludge in an aerobic sewage treatment process through an activated sludge method. The compounded decoupling agent comprises the components of 3,3,4,5-tetrachlorosalicylamide and zeolite powder in a weight ratio of the 3,3,4,5-tetrachlorosalicylamide to the zeolite powder of 1:(0.1-1.5). The compounded decoupling agent provided by the invention can obviously reduce the attenuation on the activity of sludge while keeping good sludge reduction performance, and has a very obvious positive effect and stronger performance embodied in the sludge reduction; by adopting the compounded decoupling agent, the added TCS can be reduced by 20 to 60 percent to achieve the same sludge reduction rate; and when the TCS is added into a system, the COD removal rate is basically not affected.

Description

technical field [0001] The invention relates to a decoupling agent, in particular to the decoupling of residual sludge used in the activated sludge aerobic treatment process for sewage treatment, and the main component is 3,3,4,5-tetrachlorosalicylamide joint 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 technology has many advantages, such as less investment in infrastructure, good treatment effect, stable operation, etc., but it also has a The obvious disadvantage is that a large amount of residual sludge will be generated during operation. The cost of excess sludge treatment 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 always been a subject of...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 仓一华姜垒垒吴敏赵海云常莉英
Owner SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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