Heat supply network circulating water treatment system and method with electrochemical softening coupled with electric flocculation

Abstract

The invention discloses an electrochemical softening and electric flocculation coupled heat supply network circulating water treatment system and method, and the system comprises a pressurization unit, an electrochemical softening unit, an electric flocculation unit, a clarification unit and a sludge treatment unit, wherein the pressurizing unit, the electrochemical softening unit, the electric flocculation unit and the clarifying unit are sequentially arranged in the water flow direction of heat supply network circulating water; the electric flocculation unit comprises a first polar plate, a second polar plate and a first control device; the first polar plates and the second polar plates are alternately matched; a first gap is formed between the first pole plate and the adjacent second pole plate; the first pole plate and the second pole plate are electrically connected with a first control device; the first control device can make the first pole plate and the second pole plate invert. And the first polar plate and the second polar plate are soluble electrodes. According to the system, softening of heat supply network circulating water and combined removal of suspended particles and metal corrosion product impurities in the heat supply network circulating water can be achieved at the same time, the system is reasonable in design and convenient to use, and secondary pollution is not prone to being generated.

Description

technical field [0001] The invention belongs to the technical field of heat network circulating water treatment, and relates to a heat network circulating water treatment system and method with electrochemical softening coupled with electric flocculation. Background technique [0002] At present, my country's economic growth is improving, the national economy has been greatly developed, and the living standards of residents have been continuously improved. For the northern region of my country, central heating is a very important livelihood project, which is directly related to the quality of life of residents. The so-called central heating is to use water or water vapor as the medium to send heat into the residents' homes through the transmission of heating pipes, thereby replacing the traditional personal heating method to achieve central heating. Typically, the medium that ultimately delivers heat to a resident's home is water. [0003] The heating pipe network system is...

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Problems solved by technology

However, part of the calcium carbonate and magnesium hydroxide suspended particles generated by calcium and magnesium ions in the electrochemical softening process cannot be well precipitated, and the metal corrosion products in the circulating water of the heating network cannot be removed through the electrochemical softening process, which makes the heating pipe network The system still has the risk of fouling and clogging

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