Zero-discharge treatment system for phosphate wastewater

Abstract

The invention discloses a zero-discharge treatment system for phosphate wastewater. The zero-discharge treatment system comprises a raw water tank, a pH adjusting device, a sedimentation tank, a sedimentation filter, a clarification tank and a multi-medium filter which are connected in sequence, the output end of the multi-medium filter is connected with a resin softener; a resin softener; the output end of the resin softener is connected with a softening water tank; the output end of the softening water tank is connected with the ultrafiltration device; the output end of the ultrafiltration device is connected with an ultrafiltration water producing tank; the output end of the ultrafiltration water producing tank is connected with an R0 device, and the output end of the R0 device is respectively connected with a concentrated / fresh water tank and an R0 water producing tank; the output end of the concentrated / fresh water tank is connected with an ED device; the output end of the ED device is respectively connected with an ED fresh water tank and an ED concentrated water tank; the ED concentrated water tank is connected with an MVR device; the water consumption for industrial production is greatly reduced, the problem of water resource shortage is greatly relieved, the problem of environmental pollution is solved, and meanwhile, solid by-products are conveniently recycled.

Description

Technical field [0001] The invention involves the field of wastewater treatment technology, especially a zero -emission treatment system for phosphate wastewater. Background technique [0002] Phosphoric acid wastewater refers to wastewater with a total content of at least 2 % of the total quality score. It mainly comes from wooden activated carbon production enterprises. The phosphate wastewater generated during the production process of wooden activated carbon production enterprises will cause pollution to the environment if it is discharged directly; if it is recycled, the technology is very difficult, and there is no forming of wastewater discharge processing processes in existing technologies. [0003] Zero emissions refer to the wastewater generated during the process of process production, which can be recycled again after treatment, without any waste liquid discharge factories. The salt matter in the water becomes a chemical raw material after concentration, evaporation, ...

AI Technical Summary

Problems solved by technology

Phosphate wastewater generated during the production process of wood activated carbon production enterprises, if it is discharged directly, will pollute the environment; if it is recycled, the technology is very difficult, and there is no zero-discharge wastewater treatment process in the prior art

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