Zero-emission control agent for using industrial wastewater as supplementing water of circulating water

Abstract

The invention discloses a zero-emission control agent for using industrial wastewater as supplementing water of circulating water. The zero-emission control agent is characterized by being prepared from the following components: an acrylate copolymer, a phosphonate, polycarboxylic acid, a zinc salt and azole. The greatest advantage of the control agent is that the acrylate copolymer is added on the basis of an original control agent, then the control agent has a good inhibiting effect on formation and sedimentation of calcium carbonate, calcium sulfate, and especially calcium phosphate scales,also has a good dispersing performance on ferric oxide, sludge, clay and oil dirt, and can be use under a high-pH-value condition; T-225 has good miscibility with organic phosphate, benzotriazole (BTA) and the like, has special effects in inhibiting precipitation of zinc salt and precipitation of calcium phosphate scales, and has good scale inhibition and dispersion effects under conditions withrelatively high temperature and alkaline, so that the industrial wastewater is completely treated and then is reused to a production system; waste is changed into valuables, and production water is saved; and finally emission of industrial sewage in enterprises is reduced, and influence on the environment is reduced.

Description

technical field [0001] The invention relates to a water treatment agent for industrial circulating water, in particular to a zero-emission control agent using industrial waste water as supplementary water for circulating water. Background technique [0002] At present, people need to deal with scaling of industrial circulating cooling water system, heating network system and boiler water under the condition of shutting down and stopping production. The descaling of the former two requires acid cleaning, which not only affects normal production The corrosion of the equipment itself is caused, and the boiler is treated by adding alkali to soften the scale. It not only has a certain degree of corrosion, but sometimes it needs to be manually hammered and smashed with a shovel to remove it, which is time-consuming and laborious. There are many methods of industrial sewage treatment, but common evaporation, electrolysis and chemical methods. Among them, the cost of the evaporatio...

AI Technical Summary

Problems solved by technology

[0004] The invention solves the problem that the waste water produced in the industrial production process in the prior art cannot be reused, the zero discharge control agent for industrial sewage has a poor effect in use, and a large amount of phosphorus elements are brought into the treated water, so that The process of subsequent water reuse will cause certain harm to the subsequent system. The purpose of the present invention is to solve the above-mentioned problems and provide people with a zero-emission control agent that uses industrial wastewater as circulating water supplementary water. It can adapt to and effectively treat scale inhibition and descaling of various water quality in multiple systems. When it is applied, the control agent formulated by using acrylic ester copolymer and low-phosphorus agent can not only effectively treat the industrial production. The generated sewage will not bring other harmful substances into the produced water, so that the treated produced water can be effectively recycled and reused