Wastewater disposal device for low-temperature salt separation through heat pump
A wastewater treatment and heating device technology, applied in the direction of heating water/sewage treatment, centrifugal separation water/sewage treatment, multi-stage water/sewage treatment, etc., can solve the problem of high investment and operation costs, unsuitable for enterprise needs, unfavorable promotion and application and other problems, to achieve the effect of long operating life, low requirements for evaporation equipment, and stable operation
Pending Publication Date: 2019-04-12
广东德森环保科技有限公司
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Problems solved by technology
[0004] At present, the equipment for separating and extracting sodium chloride and sodium sulfate crystals requires a high concentration during evaporation and concentration, which requires long-term heating and evaporation. The process chain is long, and the investment and operation costs are high. It does not meet the needs of enterprises and is not conducive to Large-scale promotion and application
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[0029] In order to make the purpose of the present invention, technical solutions and advantages clearer, the following will combine figure 1 The accompanying drawings describe the present invention in further detail.
[0030] refer to figure 1 As shown, a heat pump low-temperature salt separation wastewater treatment device includes:
[0031] Heat pump 1, heat pump 1 has a high temperature end 11 for continuous heating and a low temperature end 12 for continuous cooling;
[0032] The evaporation concentrator 3, the evaporation concentrator 3 includes a heating chamber 31, the waste water enters the heating chamber 31 through the waste water inlet 32, the heating chamber 31 is connected to the high temperature end 11 through the first heat exchanger 2A, and the heat of the high temperature end 11 is passed through the first heat exchanger 2A. A heat exchanger 2A is transferred to the heating chamber 31 so that the waste water in the heating chamber is heated and evaporated t...
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The invention discloses a wastewater disposal device for low-temperature salt separation through a heat pump. A heat source of the heat pump is used for heating, evaporating and concentrating wastewater, a cold source of the heat pump is used for freezing and cooling the wastewater, and the characteristic that the solubility of sodium sulfate changes along with the temperature is utilized to separate out sodium sulfate; secondary steam is used for conducting evaporation crystallization of sodium chloride and hot-melting purification crystallization of sodium sulfate. According to the wastewater disposal device, the heat source and cold source of the heat pump are fully utilized for wastewater salt separation disposal separately, so that the energy consumption is extremely low; due to low-pressure and low-temperature evaporation, the requirement for equipment is low, a large number of non-metal materials can be used, and less investment is required. The device has the advantages of lowvibration and small noise.
Description
technical field [0001] The invention relates to the field of wastewater treatment, in particular to a wastewater treatment device for heat pump low-temperature salt separation. Background technique [0002] Industrial wastewater has the characteristics of high salt content, complex components, and high pollution. It must be disposed of reasonably. Zero discharge of high-salt wastewater has gradually become an inevitable requirement for environmental protection. At present, the treatment cost of industrial wastewater in my country is very high, usually through energy-consuming The high evaporation and crystallization process forms unusable and almost worthless solid miscellaneous salt waste, which then costs thousands of yuan for outsourcing treatment, and only a few hazardous waste treatment centers in China can handle these miscellaneous salts, resulting in high processing costs and heavy burdens on enterprises . [0003] Industrial wastewater often contains a large amount o...
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IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/38C02F1/04C02F1/22Y02P20/129
Inventor 于柏涛孙森林陈文煜陈懿修罗稳盛朱流彪林子新
Owner 广东德森环保科技有限公司