Sewage treatment process for dyeing and weaving

Abstract

The invention discloses a sewage treatment process for dyeing and weaving. Sewage is introduced into a grate canal from a water storage pool to be filtered; the sewage in the grate canal is injected into a cooling tower through a water drawing pipe to be cooled; the sewage in the cooling tower is injected into a first air floatation machine, a coagulant, a flocculant and alkali are dropwise added into the first air floatation machine, and the PH value is adjusted; the sewage in the first air floatation machine is injected into a hydrolysis acidification pool; the sewage in the hydrolysis acidification pool is injected into a first water pool; the sewage in the first water pool is injected into a biological contact oxidation pool; the sewage in the biological contact oxidation pool is injected into a settling pool; the sewage in the settling pool is injected into a second air floatation pool, and a coagulant and a flocculant are injected into the second air floatation machine; the sewage in the second air floatation machine is injected into a sand filtering tank; the sewage in the sand filtering tank is injected into ultrafiltration apparatus; the sewage is injected into an ultrafiltration water production pool; the sewage permeates into a reverse osmosis membrane; finally, the sewage is injected into a clean water pool, and the purpose of sewage purification is achieved.

Description

Technical field [0001] The invention relates to a sewage treatment process for dyeing and weaving. Background technique [0002] The textile industry is one of my country's traditional pillar industries and one of the industries that earn more foreign exchange through exports. At present, my country occupies about 15% of the international market share and is the world's largest textile exporter. After years of construction, the textile industry has basically become an industrial sector with relatively complete categories, reasonable layout, basic raw materials and equipment based in the country, and a certain level of production technology. The comprehensive development capability of the industry has been continuously enhanced, and a relatively complete series system has been formed in the industries of cotton, wool, silk, linen, chemical fiber, clothing, and textile machinery. [0003] The textile industry is divided into three categories: upstream, midstream, and downstream indu...

AI Technical Summary

Problems solved by technology

Moreover, the composition of dyeing wastewater is complex, and the various organic dyes contained are difficult to degrade and have deep color, which poses a very serious threat to the environment.

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