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Seawater desalination dual water supply system in water-electricity cogeneration

A technology for quality water supply and hydropower, which is applied in general water supply conservation, seawater treatment, water/sewage multi-stage treatment, etc. It can solve the problem of high cost of desalinated water, high operating cost of seawater desalination plants, and lack of operation and maintenance of ordinary seawater desalination plants. personnel and other issues, to achieve good social and economic benefits, ease the tension of freshwater resources, and reduce the cost of water production

Inactive Publication Date: 2012-12-19
ZHEJIANG DONGFA ENVIRONMENTAL PROTECTION ENG
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Problems solved by technology

[0006] The present invention provides a water supply system for seawater desalination by quality in cogeneration of hydropower, which mainly solves the existing problems in the prior art that the indicators of water quality requirements for municipal water and industrial water for power plants are quite different, and ordinary seawater desalination plants lack professional Technical issues such as operation and maintenance personnel, high operating costs of seawater desalination plants, and higher cost of desalinated water than power plant seawater desalination facilities

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  • Seawater desalination dual water supply system in water-electricity cogeneration

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Embodiment 1

[0021] Embodiment 1: The production water consumption of the power plant is 550m 3 / h, boiler make-up water demand is 350 m 3 / h, the external water supply is 2500 m 3 / h, the total planned capacity of the seawater desalination system is 3400 m 3 / h.

[0022] A water supply system for seawater desalination and quality separation in hydropower cogeneration in this example, such as figure 1 , including the seawater pretreatment system 1, the seawater pretreatment system is connected to the reverse osmosis seawater desalination system 2, the fresh water tank 3 through the pipeline, and the fresh water tank is connected to the industrial pool 4, the secondary reverse osmosis and desalination system 5, the mine through the pipeline The chemical sterilization system 6, the secondary reverse osmosis and desalination system, and the mineralization sterilizing system are respectively connected to the desalinated water tank 7 and the municipal pool 8 through pipelines. Add carbon di...

Embodiment 2

[0024] Embodiment 2: The production water consumption of the power plant is 400m 3 / h, boiler make-up water demand is 250 m 3 / h, the external water supply is 350 m 3 / h, the total planned capacity of the seawater desalination system is 1000 m 3 / h.

[0025] A water supply system for seawater desalination and quality separation in hydropower cogeneration in this example, such as figure 1 , including the seawater pretreatment system 1, the seawater pretreatment system is connected to the reverse osmosis seawater desalination system 2, the fresh water tank 3 through the pipeline, and the fresh water tank is connected to the industrial pool 4, the secondary reverse osmosis and desalination system 5, the mine through the pipeline The chemical sterilization system 6, the secondary reverse osmosis and desalination system, and the mineralization sterilizing system are respectively connected to the desalinated water tank 7 and the municipal pool 8 through pipelines. Add carbon dio...

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Abstract

The invention relates to the field of seawater desalination, and especially relates to a seawater desalination dual water supply system in water-electricity cogeneration. The invention mainly solves the technical problems that in the prior art, indexes for water quality required by municipal water are greatly different from those of industrial water in power plants; common desalinators are lack of professional operation and maintenance personnel; the operation cost for the desalinators is high; the cost of desalted water is higher than that of seawater desalination facilities in power plants. The system of the invention comprises a seawater pretreatment system (1), and is characterized in that the seawater pretreatment system (1) is orderly connected with a reverse osmosis seawater desalination system (2) and a fresh water tank (3) through pipelines; the fresh water tank is respectively connected with an industrial water pool (4), a secondary reverse osmosis and desalting system (5), and a mineralization sterilization system (6) through pipelines; the secondary reverse osmosis and desalting system and the mineralization sterilization system are respectively connected with a desalting water tank (7) and a municipal water pool (8) through pipelines.

Description

technical field [0001] The invention relates to the field of desalination of seawater, in particular to a water supply system for desalination of seawater by quality in cogeneration of hydropower. Background technique [0002] With my country's strong support for the development of seawater desalination industry, seawater desalination has gradually entered the ranks of municipal water supply. For large coastal cities and islands, reverse osmosis membrane seawater desalination technology has been more and more applied because of its stable operation output and reliable system guarantee. [0003] Due to the shortage of fresh water resources, newly built coastal large-scale power plants are considering the use of seawater desalination technology to prepare the production and domestic water required by the whole plant. Seawater desalination facilities built by power plants can use circulating water from the power plant to draw water without building additional water intake faci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F103/08
CPCY02A20/131
Inventor 赵国萍谭玉龙应洪仓李叶然曾杭成
Owner ZHEJIANG DONGFA ENVIRONMENTAL PROTECTION ENG
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