Central air conditioner cooling circulating water treatment comprehensive control treatment method

A technology for cooling circulating water and treatment methods, applied in water treatment parameter control, neutralized water/sewage treatment, water/sludge/sewage treatment, etc. There is no way to monitor water scaling and corrosion

Active Publication Date: 2020-12-01
ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this water treatment management mode is that the times of dosing and blowdown are frequent, the utilization rate of the medicine is low, and the dosage of the medicine is large. Secondly, there is no way to monitor the scaling and corrosion of the cooling water; moreover, the conductivity of the replenishment water is daily are all different, sometimes very different, so the use of conductivity for cooling water operation management will inevitably affect its water treatment effect

Method used

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  • Central air conditioner cooling circulating water treatment comprehensive control treatment method
  • Central air conditioner cooling circulating water treatment comprehensive control treatment method
  • Central air conditioner cooling circulating water treatment comprehensive control treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0098] Implementation Case 1 Comprehensive Control and Treatment Records of Central Air Conditioning Cooling Circulating Water Treatment in a Shopping Mall

[0099] Taking the one-week water treatment of central air-conditioning cooling circulating water equipment in a shopping mall as an example, the method of the present invention is used for comprehensive control of water treatment. Generally, scale and corrosion inhibitors are added twice a week, and fungicides are added once a week. The main components of the scale and corrosion inhibitor used are organic phosphoric acid, polycarboxylic acid, BTA and auxiliary materials. The dosage of the agent is 40ppm for 1 ton of water for the first time, and 20ppm is added according to the water replenishment. For thiazolinone and sodium hypochlorite fungicides, the addition amount is 50ppm, that is, 50 grams are added to 1 ton of water. The water capacity of the cooling system is 200 tons, and the cooling circulation water volume is ...

Embodiment example 2

[0107] Implementation Case 2: Comprehensive Control of Cooling Circulating Water in Central Air-Conditioning

[0108] Table 2 Central air-conditioning cooling circulating water implements comprehensive control water treatment and untreated

[0109] cleaning interval Cleaning dose (kg) Fouling Corrosion before processing 1 year 100 serious Big after treatment 2 years 40 rare Small

[0110] It can be seen from Table 2 that this comprehensive control method can reduce the scaling speed, reduce corrosion, reduce the number of chemical descaling, and reduce the amount of cleaning chemicals.

Embodiment example 3

[0111] Implementation case 3 conductivity control method and the comprehensive control method comparison of the present invention

[0112] Table 3 conductivity control method and comprehensive control method comparison of the present invention

[0113] Dosing times Dosage Blowdown times Fouling Corrosion Conductivity method several times a day Big many Unable to control not monitorable comprehensive control method 1-2 days apart Small few able to control can monitor

[0114] It can be seen from Table 3 that the conductivity control method for water treatment of central air-conditioning cooling circulating water requires a large amount of water treatment chemicals and a large number of sewage discharges, which only solves the problem of adding scale and corrosion inhibitors, and has no effect on water treatment. Judgment is made, and the comprehensive control method adopted by the present invention controls its water treatme...

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Abstract

The invention discloses a central air conditioner cooling circulating water treatment comprehensive control treatment method, and belongs to the field of water treatment of industrial circulating water cooling systems. The method comprises the following steps: analyzing calcium ion concentration, chloride ion concentration, pH value, alkalinity, conductivity and the like in make-up water and circulating cooling water, calculating a saturated pH value through a table look-up method and a graph look-up method, calculating the saturated pH value through a formula of pHs=9.7+A+B-C-D and a formulaof pHs=PCa+PMALK+C, then calculating a stability index through a formula that S=2pHs-pH, calculating the concentration multiple, the evaporation capacity, the water replenishing capacity and the sewage discharge capacity of the cooling circulating water according to the total alkalinity (mg/L) measured value and the like, formulating a comprehensive water treatment table, according to comparison of the calculated stability indexes, and carrying out comprehensive data processing in combination with control indexes such as calcium ions and hardness, so that the reasonable dosing amount and pollution discharge time are determined, blindness of dosing and pollution discharge of conventional central air conditioner water treatment is reduced, the accuracy of the dosing amount and the pollutiondischarge amount is improved, and waste of water treatment agents and water resources is reduced.

Description

technical field [0001] The invention relates to a comprehensive control treatment method for scaling and corrosion of central air-conditioning cooling circulating water, and belongs to the technical field of water treatment of industrial circulating water cooling systems. Background technique [0002] Chemical water treatment is a technology that uses scale inhibitors to prevent scaling, corrosion inhibitors to inhibit corrosion, and bactericides to prevent the growth of bacteria and algae. With the rapid development of my country's economy, the continuous improvement of the level of industrialization, the use of a large number of cooling circulating water equipment, the application of industrial water treatment technology is becoming more and more extensive. When the cooling water of the industrial circulating cooling water system circulates through the cooling tower, since the demineralized water is far from being able to meet the requirement of replenishing water, untreat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50C02F1/66C02F5/00C02F101/10C02F101/12
CPCC02F1/66C02F5/00C02F1/50C02F2209/06C02F2209/05C02F2209/07C02F2209/18C02F2101/12C02F2101/10
Inventor 吴晋英陈敏黄长山徐会武薛冕程玉山张晓光孙润超陈言
Owner ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
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