Closed circulating evaporation and condensation system for treating high-salt and high-COD wastewater

A closed cycle and wastewater treatment technology, applied in the direction of heating water/sewage treatment, etc., can solve the problems of investment, high operating cost, adverse environmental impact, difficult operation management, etc., and achieve short heat transfer distance, efficient evaporation, and improved evaporation efficiency effect

Pending Publication Date: 2020-02-28
安徽同速科技有限公司
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Problems solved by technology

If saline wastewater is discharged directly or diluted, on the one hand, it will cause waste of water resources; on the other hand, it will have a bad impact on the environment, so the research on effective treatment methods for saline wastewater is imminent
Existing treatment technologies such as MVR and multi-effect evaporation have high investment and operating costs; they are high-pressure equipment, which is difficult to operate and manage; they are prone to coking and clogging, which limits their popularization and use

Method used

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  • Closed circulating evaporation and condensation system for treating high-salt and high-COD wastewater

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Please refer to figure 1 , in the first embodiment of the present invention, the closed cycle evaporative condensation system used for the treatment of high-salt and high-COD wastewater includes reverse Carnot cycle heat pumps connected in turn to form a circulation loop for heating evaporative wastewater and condensing purified water system, the heat pump subsystem includes: compressor unit 12 (main components such as oil separator, liquid storage tank, dry filter, sight glass, gas-liquid separator, etc. figure 1 Not marked in), (evaporative cooling titanium pipeline) condenser 3, throttling element (electronic expansion valve) 11, evaporator 10, and supporting refrigerant pipelines, valves, etc.; used for waste water transportation, spraying The waterway subsystem for showering and collecting discharge, the waterway subsystem includes: waste w...

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Abstract

The invention provides a closed circulating evaporation and condensation system for treating high-salt and high-COD wastewater. The closed circulating evaporation and condensation system comprises: awastewater tank; a wastewater pump, one end of which is connected with the wastewater tank; an evaporation tower, which is arranged on one side of the wastewater tank; a condenser, which is arranged in the evaporation tower; a spraying pipe, which is installed in the evaporation tower, connected with the wastewater pump, and located above the condenser; and a primary heat recoverer, which is connected with the evaporation tower. The closed circulating evaporation and condensation system for treating the high-salt and high-COD wastewater has the advantages of low cost and capability of achieving normal-pressure evaporation, medium-low-temperature evaporation, efficient evaporation, energy-saving evaporation and stable evaporation.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a closed cycle evaporation and condensation system for treating wastewater containing high salt and high COD. Background technique [0002] With the rapid development of my country's national economy, printing and dyeing, papermaking, chemical industry, oil refining, seawater utilization and other fields will produce a large amount of salty wastewater. If the saline wastewater is discharged directly or diluted, on the one hand, it will cause waste of water resources; on the other hand, it will have a bad impact on the environment. Therefore, the research on effective treatment methods for saline wastewater is imminent. Existing treatment technologies such as MVR and multi-effect evaporation have high investment and operating costs; they are high-pressure equipment and difficult to operate and manage; they are prone to coking and clogging, which limits their populariz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04
CPCC02F1/04
Inventor 孙勇姚冰余三江李迪
Owner 安徽同速科技有限公司
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