A printing and dyeing wastewater membrane treatment and reuse process

Abstract

The invention discloses a printing and dyeing wastewater film treatment and recycling process, which comprises the following steps: introducing wastewater into a sedimentation tank, adding medicaments, and then introducing microbubbles; testing the clarified liquid, and introducing the qualified water body into Biological treatment tank; if the test results are not up to standard, first remove the floating matter and sediment, then electrolyze, then add medicine, stir, introduce microbubbles and test until the test results are up to standard; introduce the water that meets the standard into the biological treatment tank for layering Biodegradation of layer, activated carbon treatment and membrane filtration, testing, if the test result meets the reuse water standard, the water will be reused; if the test result does not meet the reuse water standard, then add active enzyme to the biological treatment tank, and then repeat biodegradation, activated carbon Treatment, membrane filtration and detection, until the detection results meet the water reuse standard, and the reuse water is obtained. The invention has the characteristics of short design process, small occupied area, guaranteed effluent water quality and improved microbial treatment efficiency.

Description

technical field [0001] The invention relates to a printing and dyeing wastewater treatment equipment, in particular to a printing and dyeing wastewater membrane treatment and recycling process. Background technique [0002] Printing and dyeing wastewater is wastewater discharged from cotton, hemp, chemical fiber and their blended products, silk-based printing and dyeing, wool dyeing and finishing, and silk factories. The type of fiber and processing technology are different, and the water quantity and quality of printing and dyeing wastewater are also different. Textile printing and dyeing wastewater has become a research focus and difficulty in the wastewater treatment industry due to the characteristics of large discharge, deep color, high content of refractory organic matter, high salt content, complex dye components, and most of which are based on aromatic hydrocarbons and heterocyclic compounds. . At present, the printing and dyeing wastewater treatment at home and ab...

AI Technical Summary

Problems solved by technology

In the existing printing and dyeing wastewater treatment, in order to improve the treatment effect of wastewater, a long-process treatment method combining multiple methods is usually adopted. The design structure is complex, the energy consumption is high, the equipment occupies a large area, and the water quality of the effluent cannot be guaranteed. When using microbial treatment, the treatment form is relatively simple, the filling position is fixed, the contact area is small, the treatment range is limited, and the filling utilization rate is low, resulting in a reduction in treatment efficiency.

[0003] Therefore, the existing printing and dyeing wastewater treatment equipment has the problems of long design process, large floor area, unguaranteed effluent quality, and low microbial treatment efficiency.

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