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Method and device for using city waste water cold and heat source

A technology of urban sewage and application methods, applied in water supply equipment, refrigeration and liquefaction, machines using waste heat, etc., can solve the problem of high cost

Inactive Publication Date: 2005-01-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

ZL01220095.6 announced an air-conditioning device that uses urban sewage to provide energy, but the device needs to use secondary treated urban sewage, so the cost is relatively high

Method used

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  • Method and device for using city waste water cold and heat source
  • Method and device for using city waste water cold and heat source
  • Method and device for using city waste water cold and heat source

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Experimental program
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specific Embodiment approach 1

[0005] Specific implementation mode one: see figure 1 , figure 2 , Fig. 3, the method of the present embodiment is carried out according to the following process: (one) the energy of urban sewage is reclaimed; (two) the energy that is recovered is converted to the end system end; (three) the end system releases energy to User, the core of this method is to use a water delivery pipeline to directly extract the water in the main sewage canal in the (first) process, make the extracted sewage pass through the heat exchanger, and then put the sewage back into the main canal. The water delivery pipeline The outside of the water outlet and the water inlet share a grid filter, the area of ​​the water outlet is smaller than the area of ​​the water inlet, and during the sewage circulation process, the grid filter rotates in the plane where it is located. The rotating speed of the grid filter is 0.5~2 rev / min. The device of this embodiment is composed of a sewage circulation device A ...

specific Embodiment approach 2

[0006] Specific implementation mode two: refer to Figure 4 The difference between this embodiment and specific embodiment 1 is that the sewage return pipe A2 of the sewage circulation device A is connected with two drainage branch pipes A12 and A10, and one drainage branch pipe A12 is provided with a recoil pump A11, and the drainage of the drainage branch pipe A12 The port A6-1 is connected to the decontamination device A4, and the discharge port A6-2 of the other drainage branch pipe A10 is set in the main sewage channel D downstream of the position of the decontamination device A4. Its function is: the recoil pump A11 increases the recoil pressure, and the increased discharge port A6-2 reduces the displacement at the grid screen A7, avoiding the short circuit of the sewage inlet and return water.

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Abstract

The present invention discloses method and apparatus of using city waste water to provide energy source. The method includes the processes of energy recovery, energy conversion and energy release. Waste water is first pumped from the waste water trunk canal, then passed through heat exchanger and finally returned into the trunk canal. The water inlet and water outlet of the water conveying pipeline share one common filter screen, which is made to rotate in the plane during waste water circulating process. The waste water circulating apparatus consists of waste water pumping pipe, waste water returning pipe, pump and dirt eliminating unit. The waste water pumping port and waste water exhausting port in the waste water trunk canal are provided with dirt eliminating units to prevent the siltation of pollutant.

Description

Technical field: [0001] The invention relates to a method and a device for providing energy by using urban sewage. Background technique: [0002] Urban sewage is a rare cold and heat source for heat pump heating and air conditioning in cold northern regions. Using heat pump air-conditioning equipment to drive heat from urban sewage in winter and release heat in summer to achieve heat and cold recovery, not only utilizes renewable energy, but also avoids the inevitable pollution of the environment by using fossil fuels as heat sources. The biggest technical difficulty in using urban sewage as a cold and heat source for heat pump air-conditioning units is how to prevent sewage from polluting and clogging pipelines and heat exchange equipment. Sewage treatment for this is not feasible, because the minimum cost of sewage treatment is also higher than the value of extracting heat or cold from sewage. It is also not a good idea to take sewage into the system for filtration, whic...

Claims

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Application Information

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IPC IPC(8): E03F7/00F25B27/02F25B30/06
CPCY02A30/274
Inventor 孙德兴吴荣华
Owner HARBIN INST OF TECH
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