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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: 2011-06-15
SINOPEC SHANGHAI PETROCHEMICAL CO LTD
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  • Summary
  • 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 problem of sewage by adding other auxiliary components. The technical problem of the reduction of sludge activity due to the addition of TCS in the treatment system

Method used

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  • Compounded decoupling agent

Examples

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Embodiment 1～8

[0018] The uncoupling agent of each example was prepared according to the required ratio, and zeolite powder with a particle size of 40-100 mesh was taken. 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 reductionrate; and when the TCS is added into a system, the COD removal rate is basically not affected.

Description

Technical field [0001] The present invention relates to an uncoupling agent, in particular to the decoupling of residual sludge used in the process of aerobic treatment of activated sludge and sewage, and the main component is 3,3,4,5-tetrachlorosalicyamide Joint agent. Background technique [0002] Activated sludge method is currently the most widely used biological treatment technology for sewage (including urban sewage or industrial sewage). Although this process technology has many advantages, such as low capital investment, good treatment effect, stable operation, etc., it also has one The obvious disadvantage is that a large amount of excess sludge will be generated during operation. The cost of surplus sludge treatment is quite high, generally accounting for 25% to 65% of the total operating cost of the wastewater treatment plant. Therefore, the reduction or reduction of the production rate of surplus sludge in the activated sludge wastewater treatment process has always ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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