ABP process and equipment for recycling reclaimed water of printing and dyeing wastewater

Abstract

The invention discloses an ABP process and equipment for recycling reclaimed water of printing and dyeing wastewater. The equipment comprises a pretreatment system, a neutralization tank, a coagulative precipitation tank, a hydrolytic acidification tank, an A / O reaction tank, a first ABP reaction tank, an ozone catalyzed oxidation system, a second ABP reaction tank and a powder ion exchange resin system, wherein the pretreatment system is sequentially connected with the neutralization tank, the coagulative precipitation tank, the hydrolytic acidification tank, the A / O reaction tank, the first ABP reaction tank, the ozone catalyzed oxidation system, the second ABP reaction tank and the powder ion exchange resin system through a pipeline. According to the equipment for recycling the reclaimed water of the printing and dyeing wastewater, an efficient biological enriched denitrification filler is arranged in the biochemical tank, the ABP process is combined with pretreatment of the printing and dyeing wastewater, i.e., cooling and coagulative precipitation, and deep treatment, i.e., decolorization and demineralization treatment of powder ion exchange resin, and physical and quality control indexes for the efficient biological enriched filler are further established according to preliminary designed and determined process flows; and the practicability is high, so that popularization is facilitated.

Description

technical field [0001] The invention relates to the technical field of waste water treatment application, in particular to an ABP process and equipment for water reuse in printing and dyeing waste water. Background technique [0002] The printing and dyeing industry is a large water consumer, and its wastewater discharge and total pollutants rank second and fourth in the national industrial sector, respectively. It is one of the key polluting industries in my country. Printing and dyeing wastewater has always been the focus and difficulty of wastewater treatment process research due to its large discharge volume and high difficulty in treatment. [0003] Printing and dyeing wastewater generally has the following characteristics: large wastewater volume, complex water quality, high organic content, poor biodegradability, high alkalinity, high chroma, high water temperature and large fluctuations in water quality and quantity. Types of printing and dyeing wastewater: desizing...

AI Technical Summary

Problems solved by technology

With the continuous deterioration of the human ecological environment, the state has increased the intensity of environmental protection and improved the discharge standards of textile printing and dyeing wastewater, which has further increased the difficulty of printing and dyeing wastewater treatment. The traditional process has low treatment effect and can no longer meet the discharge requirements; therefore , it is very necessary to find a comprehensive treatment system and method that is more suitable for the characteristics of printing and dyeing wastewater

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