Sewage treatment system

Abstract

The invention relates to a sewage treatment system which comprises a sedimentation tank, an adjusting tank and a water storage tank which are sequentially communicated through water pipes, and furthercomprises a pretreatment device located between the sedimentation tank and a factory sewage draining exit. The pretreatment device comprises a treatment tank, one side of the treatment tank is communicated with the factory sewage draining exit, and the other side of the treatment tank is communicated with the sedimentation tank through a water pipe. A filtering device inclining to one side of thewater pipe is obliquely arranged in the treatment tank and comprises a rack, roller shafts, a first filtering net and a motor for driving one of the roller shafts to rotate. A hopper is arranged at the position, located below the higher side of the rack, of the treatment tank. A liquid spraying pipe parallel to the roller shafts is arranged in the rack, and is communicated with a plurality of nozzles with outlets facing the first filter net on one side of the hopper. The liquid spraying pipe is communicated with a water standing cavity through a liquid inlet pipe, and a driving pump is arranged on the liquid inlet pipe. The sewage treatment system has the advantages that the impurity and sewage separation efficiency is improved, impurities entering the adjusting tank are reduced, and thesewage treatment effect of chemical substances is guaranteed.

Description

Technical field [0001] The present invention relates to the technical field of textile sewage treatment, in particular to a sewage treatment system. Background technique [0002] At present, the textile industry is one of my country's pillar industries. While driving the country's economy, it is also the industry with the most serious water pollution problems except for steel and paper industries. Now in the textile industry, the treated water is placed in a storage tank after precipitation and adjustment, and then discharged to nature or recycled as industrial water. In this technology, the adjustment process generally uses materials such as resin and high salt to treat sewage. If there is a problem in the adjustment link, it is not only necessary to supplement the adjustment materials in the adjustment tank, but also to stop the entire production line. At the same time, the water in the storage tank is pumped out and decontaminated again, which greatly wastes manpower and mate...

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Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: when the sewage is settled, the preliminary solid-liquid separation work is completed purely by time and the gravity of the sundries, while the textile sewage contains a large amount of fabric fiber sundries, such as If only relying on the sedimentation tank for separation, on the one hand, it will take a long time to separate, on the other hand, during the process of transporting the sewage in the sedimentation tank to the regulating tank, it will have an impact on the sundries in the sedimentation tank, causing the sundries in the sedimentation tank to be separated. The sewage enters the regulating tank, and the debris will affect the treatment effect of the chemical substances in the regulating tank on the sewage

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