Sewage treatment system in chemical fiber factory

Abstract

The invention belongs to the field of sewage treatment in chemical fiber factories, and particularly relates to a sewage treatment system in a chemical fiber factory. Spandex, nylon and domestic sewage are collected to a sewage treatment station, waste filaments, waste blocks and other impurities are removed through a grille, the treated water flows into a water collecting well 1, then the wastewater is lifted to enter a cooling tower by a pump for cooling, and the cooled water enters a regulation and hydrolysis acidification tank; the concentration of suspended solids contained in polymerization cleaning filter screen water is higher, firstly pretreatment is performed by an air flotation device, and the pretreated water enters the regulation and hydrolysis acidification tank; the nylon polymerization discharged water contains TAD water, the TAD water is pumped into a micro-electrolysis reactor after being treated in a water collecting well 2 and a pH regulation tank for pre-treatment,the pretreated water flows into a Fenton reactor, and the outflow water enters the regulation and hydrolysis acidification tank; and after hydrolysis acidification treatment is performed, the obtained water is lifted to a UASB reaction tank through a pump, and the outflow water enters an anaerobic sedimentation tank. The system provided by the invention can effectively treat the sewage in the chemical fiber factory, and the treated sewage achieves the national emission standards in China.

Description

technical field [0001] The invention belongs to the field of chemical fiber factory sewage treatment, and in particular relates to a chemical fiber factory sewage treatment system. Background technique [0002] Sewage, usually refers to certain polluted discharge water from domestic and production. Sewage mainly includes domestic sewage, industrial wastewater and initial rainwater. The main pollutants of sewage are pathogenic pollutants, oxygen-consuming pollutants, plant nutrients and toxic pollutants. At present, the sewage produced by chemical fiber generally includes spandex, nylon water, polymer cleaning filter water, TAD water and domestic sewage. Spandex wastewater has high water temperature, large fluctuations in organic matter concentration, high ammonia nitrogen and COD concentrations, and total phosphorus concentration. Low-level characteristics; Nylon wastewater mainly comes from the extraction wastewater of polymer chips. The main pollutant in the wastewater i...

AI Technical Summary

Problems solved by technology

The existing treatment system is not very thorough, and it will have a certain impact on water resources, and it is very inconvenient to deal with. Therefore, in order to solve this problem, it is very necessary to design a sewage treatment system for chemical fiber production.

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