Heat exchange system and method for continuous wastewater treatment in biosafety laboratory

A heat exchange system and wastewater treatment technology, applied in pathogenic microorganism wastewater treatment, heat exchange equipment, heating water/sewage treatment, etc., can solve the problems of laboratory economic loss, large energy loss, pipeline scaling, etc. The effect of leakage of pathogenic microorganisms

Inactive Publication Date: 2021-10-26
WUHAN INST OF VIROLOGY CHINESE ACADEMY OF SCI
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Problems solved by technology

But no matter what kind of heating method is used, the recovery of heat energy must be considered, otherwise the energy loss will be huge, which will bring great economic losses to the operation of the laboratory
However, when the continuous wastewater treatment system recovers heat energy, it often needs to wait for the wastewater to be heated before it flows into the heat exchanger at the discharge end to recover heat energy. However, in the initial stage of system startup, the wastewater temperature is low and often cannot be directly heated to the inactivation temperature. Or because the power of the heating device is too large, it is easy to cause fouling in the pipeline

Method used

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  • Heat exchange system and method for continuous wastewater treatment in biosafety laboratory

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Embodiment 1

[0027] see figure 1 , a heat exchange system for continuous wastewater treatment in a biosafety laboratory, comprising a double-layer casing heat exchanger-1 located at the waste water inlet and a valve-2 at the soft water injection port, the double-layer casing heat exchanger- The double-layer casing on 1 is divided into internal pipes and external pipes;

[0028] The inner pipeline of the double-layer casing heat exchanger-1 is fixedly connected to the inlet pipeline of the heating device 4 through a stainless steel pipeline, and the outlet pipeline of the heating device 4 is fixedly connected to the inlet pipeline of the heat preservation coil 5 through a stainless steel pipeline, so The outlet pipe of the thermal insulation coil 5 is fixedly connected with the inner pipe of the double-layer casing heat exchanger 11 through a stainless steel pipe, and the water outlet of the inner pipe of the double-layer casing heat exchanger 11 is connected with the waste water discharge ...

Embodiment 2

[0043] According to the heat exchange system for continuous waste water treatment in the biosafety laboratory of embodiment 1, this embodiment provides a disinfection method for the heat exchange system, the method includes: closing valve one 2, opening valve two 7, valve three 9, Valve four 13, valve five 14, valve six 15, valve seven 17, valve eight 21, through steam pressure, soft water is discharged to waste water collection tank. After a certain period of time, after the soft water has been drained, the intermittent switch valve 5 14, the intermittent switch method is to close the valve 5 14, open the valve for 5 and a half seconds every 30 seconds, and drain the condensed water in the pipeline, thereby disinfecting the heat exchange system deal with.

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Abstract

The invention discloses a heat exchange system and method for continuous wastewater treatment in a biosafety laboratory, and belongs to the technical field of wastewater treatment. The heat exchange system comprises a first double-layer sleeve heat exchanger located at a waste water inlet and a first valve located at a soft water injection opening, a double-layer sleeve on the first double-layer sleeve heat exchanger is divided into an inner pipeline and an outer pipeline, and the inner pipeline of the first double-layer sleeve heat exchanger is fixedly connected with an inlet pipeline of a heating device through a stainless steel pipeline. An outlet pipeline of the heating device is fixedly connected with a heat preservation coil pipe through a stainless steel pipeline. According to the heat exchange system, the electric heating device is arranged to preheat soft water, waste water in the initial starting stage of the continuous waste water treatment system can be preheated and then secondarily heated to the inactivation temperature through the heating device, stepped heating is achieved, and the problems that the temperature in the initial heating stage of the waste water is difficult to rise and the power of the heating device is too large are solved; and the problem of scaling caused by overlarge temperature difference of the pipeline is avoided.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a heat exchange system for continuous wastewater treatment in a biosafety laboratory and a use method thereof. Background technique [0002] At present, there are two main methods of wastewater treatment in biosafety laboratories: continuous and sequential batch. Continuous wastewater treatment occupies a smaller area than sequential batch wastewater treatment, and is favored by some small laboratories. [0003] In the prior art, the continuous wastewater treatment equipment mainly heats the wastewater in the pipeline to above 121° C. through electric heating or steam heating, and then discharges it after heat preservation and sterilization. But no matter which heating method is used, the recovery of heat energy must be considered, otherwise the energy loss will be huge, which will bring great economic losses to the operation of the laboratory. However,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/02F28D21/00F28F27/00
CPCC02F1/02F28D21/0012F28F27/00C02F2103/003
Inventor 邹靖童骁汤华山王振王骏武骁武夏星袁志明
Owner WUHAN INST OF VIROLOGY CHINESE ACADEMY OF SCI
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