System and method for treating industrial waste liquid based on carrier gas extraction and low-temperature mass transfer

Abstract

The invention provides a system and method for treating industrial waste liquid based on carrier gas extraction and low-temperature mass transfer. The system comprises an absorber, wherein the absorber is connected with a condenser, the condenser is connected with a waste liquid circulating pump, and the waste liquid circulating pump is connected with a liquid distributor of the absorber and a heater in the absorber; the system also comprises an analyzer, wherein the analyzer is connected with an evaporator, the evaporator is connected with a clean water pump, and the clean water pump is connected with a liquid distributor of the analyzer and a cooler in analyzer; an air outlet of the absorber is connected with an air inlet of the analyzer; an air outlet of the analyzer is connected with an air inlet of the absorber; and an air channel between the air outlet of the analyzer and the air inlet of the absorber is provided with a circulating fan and an adsorber. According to the invention,air can be utilized as a mass transfer medium to realize water migration in industrial waste liquid under the condition of a low temperature, and the system operates under normal pressure and is suitable for treatment of corrosive liquid which is crystallized easily and scaled easily, so that a series of pretreatment procedures such as precipitation, oil removal, pH value adjustment and the likerequired by conventional waste liquid treatment are greatly reduced.

Description

technical field [0001] The invention relates to the field of industrial waste liquid treatment, in particular to an industrial waste liquid treatment system and method based on carrier gas extraction and low-temperature mass transfer. Background technique [0002] As my country's environmental protection requirements are increasing year by year, the requirements for waste liquid treatment in the industrial field are becoming increasingly stringent. The traditional waste liquid treatment technology can no longer meet the disposal needs of various hazardous waste liquids. At the same time, all localities have put forward zero-emission requirements for enterprises. The high cost of subcontracting industrial waste liquid disposal will cause a huge economic burden for enterprises. Therefore, for the It is an inevitable choice for industrial enterprises to concentrate and separate industrial waste liquid to realize reclaimed water reuse. However, the amount of annual waste liquid...

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Problems solved by technology

[0003] The present invention aims to solve the problems of poor treatment effect, high energy consumption, and high cost of difficult waste liquid in the current industrial field, and provides an industrial waste liquid treatment system and method based on carrier gas extraction and low-temperature mass transfer. The equipment layout is flexible and can Under lower temperature conditions (below 50°C), air is used as a mass transfer medium to realize the migration of water in industrial waste liquid. The system operates under normal pressure, which is suitable for the treatment of liquids that are easy to crystallize, scale, and corrode, and greatly reduce A series of pretreatment processes such as sedimentation, oil removal, and pH adjustment required for conventional waste liquid disposal

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