Electrochemical circulating water treatment system and process thereof

Abstract

The invention relates to an electrochemical circulating water treatment system and a process thereof. The system comprises an ECDT fresh water treatment unit, a water tank, a pre-filter, a pipe valve system, a power supply system, a detection instrument and an electric appliance control system. Water stored in the water tank is pretreated to form raw water, and the raw water flows out of a raw water tank and then flows to the ECDT fresh water treatment unit through the pipe valve system. The ECDT fresh water treatment unit is used for purifying raw water and enabling the purified water flow into a water purification tank after power-up adsorption treatment, and reclaimed water tanks are further connected to the two ends of the ECDT fresh water treatment unit. When the ECDT fresh water treatment unit needs to be washed, water in the reclaimed water tanks is used for washing firstly, washing water is introduced into a wastewater pipeline, then the raw water is introduced to wash an ECDT module, and the washed water enters the reclaimed water tanks for reuse in the next regeneration cycle. According to the invention, ions causing water scale can be removed, and all charged particles in circulating water, such as calcium ions, carbonate and bicarbonate causing scaling, and chlorides and sulfates having a corrosion effect on a system, can be removed.

Description

technical field [0001] The invention relates to the technical fields of water saving and emission reduction, desalination and environmental protection, in particular to an electrochemical circulating water treatment system and a process thereof. Background technique [0002] Industrial water occupies a considerable proportion of the water consumption of the whole society, and cooling water occupies the largest proportion in industrial water, which is about 80% of industrial water. Cooling water is continuously recycled in the circulation system. Due to the temperature of the water As the temperature rises, the change of water velocity, the evaporation of water, and the concentration of various inorganic ions and organic substances will cause problems such as corrosion and scaling of equipment and pipelines. For this reason, people pay more attention to the treatment of cooling water. [0003] The traditional method is to add chemical agents to achieve the purpose of scale in...

AI Technical Summary

Problems solved by technology

Therefore, the disadvantage of the chemical agent method is that it is not environmentally friendly, and the second is that the concentration ratio is low and wastes water resources.

However, the function of this technology is relatively simple, and it has requirements on water quality. It can play a better descaling effect on water with high calcium hardness and bicarbonate (carbonate)

As far as the mechanical structure is concerned, the scraping system of the equipment is easily damaged and the scraping is not thorough. Generally, it needs to be manually opened and cleaned in about 3 months, and the scraper needs to be replaced in about 6 months. The service life of the DSA anode is usually not more than 2 years

And the processing capacity is large, generally 5~15% of the circulation volume should be processed, and the single descaling efficiency is low, generally 2~5mg / L(Ca) / cycle

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