Backwashing device for domestic wastewater treatment and recycling system

Abstract

The invention discloses a backwashing device for a domestic wastewater treatment and recycling system. The structure of the backwashing device comprises a waste water inlet, a backwashing structure, awater outlet pipe, a hydraulic valve, a treatment tank, a base, two pipelines, conversion tubes, sucking pumps and valves, wherein the treatment tank is vertically mounted on the base; the waste water inlet is embedded in the top end surface of the treatment tank, and the water outlet pipe is mounted on one side of the treatment tank; the water outlet pipe is provided with the hydraulic valve, the backwashing structure is mounted at one end, away from the treatment tank, of the water outlet pipe, and the other side, opposite to the hydraulic valve, of the treatment tank is communicated with the conversion tubes through the two pipelines; the sucking pumps are mounted at the tops of the conversion tubes; and the valve is mounted on each of the pipelines. The backwashing device has the backwashing structure, and has the backwashing effect; and when washing is not performed, an elastic sheet flow blocking structure and a flow dividing structure can achieve the effects of dividing flows and filtering. A water flow backwashing principle is adopted to be matched with the elastic sheet flow blocking structure to wash the structure and the pipelines namely the water outlet pipe and the like of the device, and the washing is clean.

Description

technical field [0001] The invention relates to the field of domestic sewage treatment, in particular to a backwashing device used in a domestic sewage treatment and reuse system. Background technique [0002] The earth's fresh water resources are gradually decreasing with the sea level rise caused by the greenhouse effect, and the urban population is increasing, and the water consumption is also gradually increasing. How to rationally and effectively use wastewater has become the main problem to be solved by various countries. Wastewater is mainly divided into industrial wastewater and domestic wastewater. Domestic wastewater is miscellaneous drainage used on a daily basis. In order to improve the utilization rate of household water, the increase in the reuse rate of wastewater in each household is mainly due to the recovery of the middle row of miscellaneous drainage, such as vegetable washing water and face washing water, which are relatively clean. Water, the treatment o...

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Problems solved by technology

[0002] The earth's fresh water resources are gradually decreasing with the sea level rise caused by the greenhouse effect, and the urban population is increasing, and the water consumption is also gradually increasing. How to rationally and effectively use wastewater has become the main problem to be solved by various countries. Wastewater is mainly divided into industrial wastewater and domestic wastewater. Domestic wastewater is miscellaneous drainage used on a daily basis. In order to improve the utilization rate of household water, the increase in the reuse rate of wastewater in each household is mainly due to the recovery of the middle row of miscellaneous drainage, such as vegetable washing water and face washing water, which are relatively clean. Water, the treatment of this type of water is relatively simple, and the existing domestic sewage recycling systems basically have the function of centralized treatment, but the existing domestic sewage recycling systems still have the following problems: 1. The sewage discharge pipes are less cleaned, and even Without flushing, the pipeline is prone to blockage due to long-term soaking in sewage, and it will also cause re-contamination of treated water; 2. The traditional cleaning method is not clean; 3. When it is not flushed, it is impossible to filter and divert effect

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