High ammonia-nitrogen tail liquid zero-discharge treatment system and high ammonia-nitrogen tail liquid zero-discharge treatment method applied after alkaline etching waste liquid treatment

Abstract

The invention belongs to the technical field of high complexing copper and high ammonia-nitrogen wastewater in the environmental engineering PCB (printed circuit board) industry and in particular relates to a high ammonia-nitrogen tail liquid zero-discharge treatment system and a high ammonia-nitrogen tail liquid zero-discharge treatment method applied after alkaline etching waste liquid treatment. The high ammonia-nitrogen tail liquid zero-discharge treatment system applied after alkaline etching waste liquid treatment is formed by coupling an objectifying complex breaking and copper removal system, a tubular microfiltration (TMF) clarification system, a reverse electrodialysis (EDR) concentration system, a reverse osmosis (RO) deep desalination system and an evaporation crystallization system. The high ammonia-nitrogen tail liquid zero-discharge treatment system applied after the alkaline etching waste liquid treatment has the advantages that multiple technologies are synergized and integrated, a reliable, economic and effective treatment technology with strong broad spectrum property and easiness in operation and reliable, economic and effective treatment equipment with strong broad spectrum property and easiness in operation are formed, the problems that high ammonia-nitrogen high complexing copper wastewater can not reach the standard stably and deep treatment standard upgrading and recycling are difficult are solved, and a critical role can be certainly played in realization of emission standard or zero-emission wastewater treatment in the PCB industry of China.

Description

technical field [0001] The invention belongs to the technical field of high-complex copper and high-ammonia-nitrogen wastewater treatment in the environmental engineering PCB industry, and specifically relates to a zero-discharge treatment system and method for high-ammonia-nitrogen tail liquid after alkaline etching waste liquid treatment. Background technique [0002] At present, the output value of the global printed circuit board (PCB) industry accounts for more than a quarter of the total output value of the electronic component industry, and it is the industry with the largest proportion among various electronic component sub-sectors. At the same time, due to its unique position in the electronic basic industry, it has become the most active industry in the contemporary electronic component industry. With my country's sustained and rapid economic development in recent decades, mainland China has continued to rank first in the world in terms of output value and output f...

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Problems solved by technology

[0004] The present invention aims to provide a zero-emission treatment system for high-ammonia-nitrogen tail liquid after the treatment of alkaline etching waste liquid in order to solve the problem that the existing treatment methods cannot The problem of making copper and total nitrogen meet the standard discharge, and the waste of water resources, heavy metal resources, and ammonium salt resources caused by waste water discharge will effectively solve the serious environmental pollution caused by the excessive discharge of alkaline etching waste water and improve the local ecological environment

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