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Cleaning and pre-filming method for circulating water system in park

A circulating water system and pre-membrane technology, applied in chemical instruments and methods, natural water treatment, descaling and water softening, etc., can solve problems affecting the normal operation of the circulating water system, production process imbalance, etc., to reduce water eutrophication The risk of pollution, slow down the generation of fouling, the effect of low phosphorus content

Inactive Publication Date: 2019-12-13
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the circulating cooling process of water, due to the evaporation of water, the concentration of dissolved salts, the escape of carbon dioxide, the entry of external pollutants and other reasons, scaling, corrosion and bacteria and algae reproduction will occur, which will affect the normal operation of the circulating water system operation, and even cause imbalance in the production process

Method used

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  • Cleaning and pre-filming method for circulating water system in park
  • Cleaning and pre-filming method for circulating water system in park
  • Cleaning and pre-filming method for circulating water system in park

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1 Preliminary cleaning stage

[0035] 1) Preliminary cleaning steps

[0036] Lower the liquid level of the suction pool (5.0-5.3m of the suction pool) to make the circulation pump run at a low liquid level. Ensure that all heat exchangers are put into operation, and ensure that the flow rate of the heat exchanger is not lower than 1.0 m / s. During the cleaning period, it is forbidden to open the sewage system and close the side filter device.

[0037] Artificial impact dosing of N73550 with a concentration of 30mg / L, and circulation for 1 hour to fully mix the agents.

[0038] Then continuously add sodium hypochlorite to the system to quickly increase the residual chlorine to 0.5-1.0mg / L within 5-8 hours.

[0039] Keep circulating for 24 hours, overflow is strictly prohibited, and the change of turbidity is monitored.

[0040] A lot of foam will appear during the chemical cleaning process, you can add an appropriate amount of non-silicon defoamer N71D5PLUS, the conce...

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Abstract

The invention provides a cleaning and pre-filming method for a circulating water system in a park. The method comprises a primary cleaning stage, a secondary cleaning stage and a pre-filming stage. Aphosphorus-free corrosion inhibitor and a silicon-free defoaming agent are adopted in the method provided by the invention, so that the risk of eutrophication of a water body caused by pollution discharge of circulating water can be reduced due to a low phosphorus content while generation of dirt is effectively slowed down.

Description

technical field [0001] The invention belongs to the technical field of industrial circulating cooling water treatment, and in particular relates to a method for cleaning and pre-filming a circulating water system in a park. Background technique [0002] With the rapid development of my country's industry, the problem of environmental pollution is becoming more and more serious. As an important medium in industrial cooling, circulating cooling water has also received a lot of attention. Circulating cooling water refers to exchanging heat through a heat exchanger or direct contact with heat exchange to exchange medium heat and then recycle it after passing through the cooling tower to save water resources. [0003] During the circulating cooling process of water, due to the evaporation of water, the concentration of dissolved salts, the escape of carbon dioxide, the entry of external pollutants and other reasons, scaling, corrosion and bacteria and algae reproduction will occu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/00C02F5/08
CPCC02F5/00C02F5/08C02F2103/023
Inventor 王子悦李一平翁晟琳潘泓哲程月
Owner HOHAI UNIV
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