Method for controlling biological slime of clean circulating water system through physicochemical-superconduction high gradient magnetic separation (HGMS) coupled process

Abstract

The invention provides a method for controlling biological slime of a clean circulating water system through a physicochemical-superconduction high gradient magnetic separation (HGMS) coupled process,and belongs to the technical field of water treatment. The method comprises the steps: firstly, an inorganic efficient composite flocculant is added into circulating water, thus zoogloeae in the circulating water are demulsified from hydrosol together with fine micro-nano particles to form alum floc, and a flocculation effect is generated; and then the water after flocculation passes through thesuperconduction HGMS system, the magnetic field intensity and the flow rate are controlled, a strong magnetic flocculation effect is generated to enable flocs to grow quickly, thus the zoogloeae in the circulating water wrap the micro-nano-scale particles to be quickly separated and removed from the water, meanwhile the functions of sterilization and algae killing are achieved, and the purpose ofdeeply purifying the water quality is achieved. According to the method, breeding and adhesion of the biological slime on the surfaces of cooling equipment and a pipeline can be avoided from the source, thus the situation that scale is generated, and consequently the heat exchange effect is influenced can be avoided, and meanwhile generation of the scale and subscale corrosion is effectively avoided, and normal operation of production is guaranteed; and the water quality is stabilized, the concentration multiple is increased, and water conservation and energy conservation are achieved.

Description

technical field

[0001] The invention relates to the technical field of water treatment, in particular to a method for controlling biological slime in a net circulating water system of a physicochemical-superconducting HGMS coupling process. Background technique

[0002] Most industrial enterprises need high-temperature equipment in the production process, and the circulation cooling of the equipment becomes inevitable. For the open circulating cooling water system, during the operation of the water system, with the suction of the negative pressure of the cooling tower and the increase of the concentration factor, the content of micro-nano suspended particles gradually increases, which provides necessary conditions for the growth of bacteria and algae and the proliferation of microorganisms, and accelerates the cooling process. Bioslime formation. The biological slime formed will have a great impact on the normal, continuous and stable operation of the circulating cooling wa...

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