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Terrestrial heat tail water treating process

A technology of geothermal tail water and treatment process, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, etc., can solve the complex composition of heavy metal elements, trace elements and radioactive elements , the content of iron and manganese exceeds the standard, and the content of boron is high, so as to achieve the effect of ensuring environmental safety, advanced technology and reliable technology

Inactive Publication Date: 2013-04-03
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0006] In order to solve the deficiencies of the prior art, the present invention proposes an integrated process for the development and treatment of geothermal tail water. Elements, trace elements and radioactive elements and other complex components can be used as a systematic solution for the development and utilization of geothermal tail water

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  • Terrestrial heat tail water treating process

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with drawings and embodiments.

[0020] In this example, refer to figure 1 , a geothermal tail water treatment process, comprising the following steps:

[0021] (1) Control the tail water temperature of geothermal water after thermal energy cascade utilization below 45°C;

[0022] Thermal energy cascade utilization refers to the process of taking out deep geothermal water and extracting heat energy in geothermal water through more than two cascade heat exchanges without consuming geothermal water. The thermal energy cascade utilization in this embodiment includes three cascades, The first step is to extract the 85°C geothermal water extracted through the heat exchanger to provide heat for the pipe network system, and then enter the secondary heat exchanger; the second step is to use the 55°C water after the first stage The geothermal water is used for heat exchange again, and the heat energy is extra...

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Abstract

The invention provides a terrestrial heat tail water treating process which comprises the following steps: (1) controlling the tail water temperature after the terrestrial heat water is subjected to heat energy gradient utilization to be less than 45 DEG C; (2) aerating the terrestrial heat tail water by using an aeration tower; (3) flowing the aerated terrestrial heat tail water through a manganese sand filter to be filtered; (4) carrying out membrane integrated treatment on the filtered terrestrial heat tail water by using a double-membrane method process; (5) carrying out boron selective resin absorption treatment on the reverse osmosis water; and (6) filtering the effluent subjected to boron removal by using an active carbon filter and conveying to a use point. Aiming at the harmful ingredients and pollutant types in terrestrial heat tail water, the invention integrates a plurality of water treatment unit techniques, realizes integration and optimization of process systems, is wide in water quality application range of the terrestrial heat tail water, advanced in process and reliable in technique, and has practical popularization and application values in development and utilization in terrestrial heat tail water, and as a result, significant social, economic and environmental benefits are achieved.

Description

technical field [0001] The invention relates to a tail water treatment process, in particular to a geothermal tail water treatment process. Background technique [0002] Geothermal water is a high-temperature geothermal resource drawn from deep underground fault zones. It is not only a water resource, but also a clean energy. As "heat energy", it can replace traditional fossil energy that causes serious air pollution, such as coal and oil. my country's geothermal water resources are very rich, rational development and utilization of geothermal water resources to increase energy supply and optimize energy structure, which has great practical significance for my country to build a resource-saving and environment-friendly society. [0003] Geothermal water is formed in underground rock formations with a heat source attached. Although its water quality varies according to geographical distribution, geological structure, and mining depth, the cause of geothermal water determines...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/44
Inventor 谢雄鲍建国
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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