Backwashing channel structure for percolate guide and drainage system of refuse landfill

Abstract

The invention discloses a backwashing channel structure for a percolate guide and drainage system of a refuse landfill. The side wall of an end well is provided with a water inlet and a water outlet in the opposite direction, and a through hole matched with a holeless pipe; a first straight pipe and a second straight pipe are arranged in the end well, and the first straight pipe is positioned above the second straight pipe; the first straight pipe, the second straight pipe and the holeless pipe are communicated through a three-way pipe, and the holeless pipe stretches out of the side wall of the end wall from the through hole to be connected with a collecting pipe of the percolate guide and drainage system; a detachable sealing cover is arranged at the inlet of the first straight pipe; a backwashing guide bent pipe is fixedly arranged in a channel formed by the first straight pipe, the three-way pipe and the holeless pipe; and one end of the backwashing guide bent pipe is arranged in the first straight pipe, and the other end of the backwashing guide bent pipe is arranged in the holeless pipe. Water sprayed by a high-pressure water pipe and a spray head enters the collecting pipe of the percolate guide and drainage system through the backwashing guide bent pipe, so that plugged materials are effectively dispersed by reverse impact force of high-pressure water flow, and a percolate collecting pipeline is prevented from being plugged.

Description

technical field [0001] The invention relates to an anti-clogging device for a leachate drainage system in a landfill, in particular to a backwash channel structure for a leachate drainage system in a garbage landfill. Background technique [0002] The landfill leachate drainage system is composed of crushed stone drainage layer, blind ditch, collection pipe, etc. It is an important part of the landfill lining system. The water head on the cushion is within 30cm, thereby reducing leachate seepage and ensuring safe operation of the landfill. However, in actual engineering, it was found that the leachate drainage layer system was silted up after several years of landfill operation. The mechanism of clogging includes physical, biological, chemical and other effects. During the leachate drainage process, the surface of the coarse particle filter layer and the leachate collection pipe will first absorb suspended particles to form sediment, and then the active organic matter wil...

AI Technical Summary

Problems solved by technology

Due to the relatively backward design of the first batch of landfills built in my country at the end of the last century, a simple leachate drainage system was generally adopted without considering the prevention and control of silting, resulting in the fact that the silted landfills could not be cleaned in time, and were eventually completely abandoned. clogging

Currently, there is no channel structure for flushing equipment to enter the leachate drainage system

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