Printing and dyeing wastewater deep treatment system and printing and dyeing wastewater deep treatment method

Abstract

The invention discloses a printing and dyeing wastewater deep treatment system and a printing and dyeing wastewater deep treatment method. The system includes a front treatment unit, a deep treatmentunit and a recycling treatment unit that are connected through a pipeline, wherein the deep treatment unit includes a coagulation floatation tank, a biological aerated filter, a clear water tank and an ozone contact oxidizing tower which are connected sequentially through a pipeline; the recycling treatment unit includes a quartz sand filter connected with the clear water tank through a pipeline;the quartz sand filter is connected with an ultrafiltration membrane module, an ultrafiltration water production tank, a security filter and a reverse osmosis device sequentially through a pipeline; the reverse osmosis device includes an RO water production tank and an RO concentrated water tank respectively through a pipeline; the RO concentrated water tank is sequentially connected with a Fenton reactor, a settling tank and a drain tank through a pipeline; the settling tank and the coagulation floatation tank are further connected with a sludge tank. The system and the method have the characteristic of greatly improving the wastewater treatment effect.

Description

technical field [0001] The invention relates to a printing and dyeing wastewater treatment system, in particular to a printing and dyeing wastewater advanced treatment system and a treatment method. Background technique [0002] Printing and dyeing wastewater mainly includes dyeing wastewater and rinsing wastewater. The treatment of dyeing wastewater is mainly through grid filter tanks, regulating tanks, sedimentation tanks, hydrolytic acidification tanks, contact oxidation tanks and secondary sedimentation tanks. Rinsing wastewater is treated through regulating tanks, rotating Grille tank, air flotation tank and sedimentation tank, etc. However, the effluent of dyeing wastewater and rinsing wastewater treated by existing sewage treatment equipment can only meet the "Discharge Standard of Water Pollutants for Textile Dyeing and Finishing Industry" (GB4287-2012) newly built The discharge concentration of the enterprise cannot meet the direct discharge standard in the environm...

AI Technical Summary

Problems solved by technology

[0002] Printing and dyeing wastewater mainly includes dyeing wastewater and rinsing wastewater. The treatment of dyeing wastewater is mainly through grid filter tanks, regulating tanks, sedimentation tanks, hydrolytic acidification tanks, contact oxidation tanks and secondary sedimentation tanks. Rinsing wastewater is treated through regulating tanks, rotating Grille tank, air flotation tank and sedimentation tank, etc. However, the effluent of dyeing wastewater and rinsing wastewater treated by existing sewage treatment equipment can only meet the "Discharge Standard of Water Pollutants for Textile Dyeing and Finishing Industry" (GB4287-2012) newly built The discharge concentration of the enterprise cannot meet the direct discharge standard in the environmental protection requirements "Discharge Standard of Water Pollutants for Textile Dyeing and Finishing Industry" (GB4287-2012)

Therefore, the existing technology has the problem of poor sewage treatment effect

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