Industrial wastewater open and closed circulating water comprehensive treatment zero discharge system and its application method

Abstract

The present invention discloses an industrial wastewater open-closed circulating water comprehensive treatment zero-discharge system and a use method, the industrial wastewater open-closed circulating water comprehensive treatment zero-discharge system includes sewage treatment equipment, open-type circulating cooling equipment and closed-type circulating cooling equipment, the sewage treatment equipment comprises a sewage tank, a sewage processor and a water discharge tank which are sequentially connected; the open-type circulating cooling equipment includes a spray cooling tower, a chemical reagent tank, a first circulating pump, a water supplement pump and a chemical reagent pump; the closed-type circulating cooling equipment includes a heat exchange coil, a second circulation pump, a plurality of water-cooling heat exchangers and a water supplement tank, a first supramolecular chemical reagent is put in the water supplement tank, and a second supramolecular chemical reagent is put in the chemical reagent tank. The cooling water heat transfer efficiency of the industrial wastewater open-closed circulating water comprehensive treatment zero-discharge system is improved, and sewage discharge is reduced.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to an open-close circulating water comprehensive treatment zero discharge system for industrial waste water and a use method thereof. Background technique [0002] my country's per capita water resources are only 1 / 4 of the world's average level, and it is one of the countries with the poorest per capita water resources in the world, and the distribution is seriously uneven. With the development of economy and society, we have more and more demand for water resources, but the amount of fresh water resources available for use is shrinking year by year due to water pollution and overexploitation. It is also becoming more and more stringent, and promotes the reuse of industrial water. The reuse of industrial water not only makes full use of water resources and reduces environmental pollution caused by direct sewage discharge, but also is an important way to alleviate the sho...

AI Technical Summary

Problems solved by technology

However, as the cooling water concentration ratio increases and the water quality deteriorates, scaling will often occur in the heat exchange equipment and pipelines, affecting the heat exchange efficiency. At the same time, if the scaling in the heat exchange equipment is serious, it still needs to be replaced and discharged, resulting in sewage discharge phenomenon occurs

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