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Slow decarbonization-nanofiltration combined softening treatment system and method for circulating cooling water of thermal power plant

A technology of circulating cooling water and slow decarbonization. It is used in natural water treatment, descaling and water softening, water/sewage treatment, etc. It can solve the problem of frequent reverse osmosis cleaning, ultrafiltration fouling, frequent and other problems, to achieve the effect of alleviating organic pollution and microbial pollution, reducing the amount of waste water, and reducing hardness

Active Publication Date: 2016-04-20
HUANENG POWER INT INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main manifestations are the phenomenon of "turning over" in the mechanically accelerated clarifier, serious ultrafiltration fouling, frequent replacement of security filter elements, and frequent reverse osmosis cleaning, etc.

Method used

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  • Slow decarbonization-nanofiltration combined softening treatment system and method for circulating cooling water of thermal power plant

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Embodiment Construction

[0026] The present invention is described in further detail below in conjunction with accompanying drawing:

[0027] refer to figure 1 , the thermal power plant circulating cooling water slow decarburization-nanofiltration combined softening treatment system includes a circulating water cooling tower 1, a raw water pool 2, a desulfurization absorption tower 23, a nanofiltration system and a slow decarburization system; The slow decarbonization system includes coagulation tank 3, flocculation tank 4, high-efficiency clarification tank 5, coagulant storage tank 7, lime milk storage tank 8 and coagulant aid storage tank 9;

[0028] The circulating water discharge sewage outlet of the circulating water cooling tower 1 is connected with the water inlet of the raw water tank 2, the water outlet of the raw water tank 2 is connected with the water inlet of the coagulation tank 3, and the water outlet of the coagulation tank 3 is connected with the bottom of the flocculation tank 4 Th...

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Abstract

The invention discloses a slow decarbonization-nanofiltration combined softening treatment system and method for the circulating cooling water of a thermal power plant. The system comprises a circulating water cooling tower, a raw water tank, a desulfurizing absorption tower, a nanofiltration system and a slow decarbonization system, wherein the slow decarbonization system comprises a coagulation tank, a flocculation tank, an efficient clarifying tank, a coagulant storage tank, a lime milk storage tank and a coagulant aid storage tank. The system and method disclosed by the invention can be adopted for treating the circulating cooling water while the operation is simple and the cost is relatively low.

Description

technical field [0001] The invention relates to a slow decarburization-nanofiltration combined softening treatment system and method, in particular to a slow decarburization-nanofiltration combined softening treatment system and method for circulating cooling water in thermal power plants. Background technique [0002] In recent years, more and more thermal power plants are required to be designed according to the "zero discharge" of wastewater in the whole plant. On the one hand, water resources are saved and good water consumption indicators are obtained; on the other hand, because the country pays more and more attention to the environmental protection of water resources, In some specific areas, power plants are not allowed to have outfalls. With the increasing pressure of environmental protection, the implementation of zero discharge of waste water in thermal power plants has become the general trend. Among them, circulating water sewage accounts for more than 70% of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01D53/78B01D53/50
CPCB01D53/502B01D53/78C02F1/442C02F1/52C02F5/00C02F9/00C02F2103/023
Inventor 李亚娟申建汛胡大龙陈景硕王正江王璟许臻黄倩
Owner HUANENG POWER INT INC
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