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System for treating circulating cooling water, application thereof and method for treating circulating cooling water

A technology of circulating cooling water and system, applied in natural water treatment, non-polluting water treatment, chemical instruments and methods, etc., can solve the problems of large chemical agents, aggravating environmental burden, increasing investment in advanced treatment equipment, etc., to reduce treatment costs. , the effect of low corrosion rate and adhesion rate

Active Publication Date: 2020-07-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the former often requires an increase in investment in advanced treatment equipment, and the latter not only consumes a large amount of chemicals, but also these chemicals will increase the environmental burden with the discharge of circulating water and sewage

Method used

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  • System for treating circulating cooling water, application thereof and method for treating circulating cooling water
  • System for treating circulating cooling water, application thereof and method for treating circulating cooling water
  • System for treating circulating cooling water, application thereof and method for treating circulating cooling water

Examples

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Embodiment 1

[0071] This embodiment is used to illustrate the circulating cooling water treatment method provided by the present invention.

[0072] Water quality: domestic reuse water in Table 1.

[0073] Concentration times (Cl of circulating cooling water - concentration and make-up water Cl - Concentration ratio): 2.5±0.2:1.

[0074] pH: natural

[0075] Velocity: 1m / s

[0076] Treatment: the ecological floating island (3cm 2 / L circulating water) placed in the sump; add Bacillus coagulans (purchased from BNCC strain library, article number BNCC337209) into the sump, the dosage is 200mg per L of circulating water, and then add once every 10 days, Each dosage is 100mg per L of circulating water; at the same time, add Nitrosomonas europaea (purchased from BNCC strain bank, article number ATCC19718) to the sump, the dosage is 200mg per L of circulating water, and thereafter every Dosing once every 10 days, each dosage is 150mg per L of circulating water; add sodium sulfite at the in...

Embodiment 2

[0082] This embodiment is used to illustrate the circulating cooling water treatment method provided by the present invention.

[0083] Water quality: industrial reuse water in Table 1.

[0084] Concentration times (Cl of circulating cooling water - concentration and make-up water Cl - Concentration ratio): 2.5±0.2:1.

[0085] pH: natural

[0086] Velocity: 1m / s

[0087] Treatment: the ecological floating island (1.5cm 2 / L circulating water) placed in the sump; add Bacillus stearothermophilus (purchased from the BNCC strain library, article number BNCC336760) into the sump, the dosage is 200mg per L of circulating water, and then add it every 10 days Once, each dosage is 60 mg per L of circulating water; at the same time, add Nitrosospira polytype (purchased from BNCC strain bank, article number ATCC25196) to the sump, and the dosage is 200 mg per L of circulating water. After that, dosing once every 10 days, each dosage is 100mg per L of circulating water; add hydrazin...

Embodiment 3

[0093] This embodiment is used to illustrate the circulating cooling water treatment method provided by the present invention.

[0094] Water quality: domestic reuse water in Table 1.

[0095] Concentration times (Cl of circulating cooling water - concentration and make-up water Cl - Concentration ratio): 2±0.2:1.

[0096] pH: natural

[0097] Velocity: 1m / s

[0098] Treatment: the ecological floating island (6cm 2 / L circulating water) was placed in the sump; Lactobacillus Lactobacillus (purchased from Beijing Bei Na Chuanglian Biotechnology Research Institute, article number CICC10331) was added to the sump, and the dosage was 200 mg per L of circulating water, and then every L of circulating water. Dosing once every 10 days, each dosage is 150 mg per L of circulating water; at the same time, add marine Nitrosococcus (purchased from BNCC strain bank, article number ATCC19707) to the sump, and the dosage is 150 mg per L of circulating water 200mg, after that, dosing onc...

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Abstract

The invention relates to the field of circulating cooling water, in particular to a system for circulating cooling water treatment, application thereof and a method for circulating cooling water treatment. In particular, the system comprises an ecological floating island, an acid forming bacterium, an autotrophic microorganism and an optional oxygen consuming agent. When circulating cooling watertreatment is carried out by using the system provided by the invention, the circulating cooling water which is replenished with recycled water can maintain high water quality, and heat exchange tubesin circulating cooling water systems is maintained to have relatively low corrosion rate and adhesion rate. At the same time, the system is mainly based on biological agents, and has the advantages ofbeing green and environment-friendly. In addition, the system provided by the invention can be directly applied to existing circulating cooling water systems without additionally adding advanced treatment equipment, thereby greatly reducing the treatment cost.

Description

technical field [0001] The invention relates to the field of circulating cooling water, in particular to a system for treating circulating cooling water and its application, and a method for treating circulating cooling water. Background technique [0002] During the operation of the industrial circulating cooling water system, due to water evaporation, wind loss, etc., the circulating water is continuously concentrated, the concentration of anions and cations contained in it increases, and the pH value changes, etc., resulting in deterioration of water quality, causing corrosion or scaling, The temperature, pH value and nutrient content of the circulating water are conducive to the reproduction of microorganisms, and the sufficient sunlight on the cooling tower is an ideal place for algae growth. With the increasing shortage of water resources, water saving has been paid more and more attention by various industrial enterprises, and the replenishment of circulating cooling ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34C02F103/02
CPCC02F3/32C02F3/348C02F2103/023
Inventor 吴颖郦和生秦会敏楼琼慧谢文州张春原王洪英
Owner CHINA PETROLEUM & CHEM CORP