Compound uncoupling agent

Abstract

The invention discloses a compound uncoupling agent which is used for deweighting treatment of residual sludge in the sewage treatment technology with the activated sludge process. The compound uncoupling agent comprises 3,3,4,5- tetrachlorosalicyloylaniline, refined diatomite and zeolite. When one part by weight of 3,3,4,5-tetrachlorosalicyloylaniline is provided, 0.05-1.0 part by weight of refined diatomite is provided, and 0.05-1.0 part by weight of zeolite is provided. The compound uncoupling agent provided by the invention can obviously lower attenuation on sludge activity while keeping favorable sludge decrement performance and has obvious active effect, which embodies on the aspect that the sludge decrement performance is enhanced, for example, the added TCS can be reduced by 20-60% for reaching the same sludge decrement ratio; after TCS is added in a system, COD strainaway rate is not affected on the whole.

Description

technical field

[0001] The invention relates to an uncoupling agent, in particular to the residual sludge reduction treatment in the activated sludge aerobic treatment sewage process, and the main component is 3,3',4',5-tetrachlorosalicylanilide the uncoupling agent. Background technique

[0002] The activated sludge process 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 less capital investment, good treatment effect, and stable operation, it also has a The significant disadvantage is that a large amount of excess sludge is produced 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, the activated sludge sewage treatment process to reduce or reduce the generation rate of excess sludge has always been a topic of great concern. ...

Images