Biological treatment method of waste water from printing and dying

Abstract

The invention provides a biological treatment process for printing and dyeing waste water, in particular printing and dyeing wastewater containing amino-benzene, wherein an anaerobic baffle reactor (ABR) and a sequencing batch reactor (SBR) are combined for water treatment, the treatment process comprises the steps of, pumping the printing and dyeing wastewater into anaerobic baffle reactor, the printing and dyeing wastewater being treated by the sludge layer of the anaerobic baffle reactor and fed in batch into the sequencing batch rector for active sludge treatment, the ABR process according to the invention realizes both decoloration and partial degradation of amino-benzene.

Description

technical field

[0001] The invention relates to a treatment method for printing and dyeing wastewater, in particular to a treatment method for aniline-containing printing and dyeing wastewater. Background technique

[0002] Printing and dyeing wastewater is one of the main harmful industrial wastewater at present. It contains toxic substances and has the characteristics of large water volume, high chroma, and complex components, causing serious pollution to the environment. There are various technologies for treating printing and dyeing wastewater at home and abroad. The main methods are physical and chemical treatment and biological treatment, and the two methods are used alone or in combination. Materials for physical treatment mainly include activated carbon and diatomaceous earth. The former has higher treatment costs, while the latter requires a large amount of materials and produces a large amount of sludge, which is difficult to apply on a large scale. The coagulatio...

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