Operation method for repairing floating cover film with water

Abstract

The invention discloses an operation method for repairing a floating cover film with water. The operation method comprises the following steps: constructing an operation support platform for repairing a film surface broken hole by adopting a large-area buoyancy pad; enabling an operator to stand on the HDPE floating cover films on the two sides of the broken hole to weld HDPE film strips; slowly lifting the film strip, and lifting the HDPE floating cover film at the broken hole to be in a suspended state; temporarily sealing the film surface broken hole by adopting a strong adhesive tape; and carrying out extrusion welding repair on the film surface broken hole by adopting an HDPE repair block to form a permanent and firm HDPE repair block, so as to complete repair of the film surface broken hole of the HDPE floating cover film with water. The problem that in the operation process of a sewage pool, due to foreign matter entering or the action of external force or the like, holes occur in the film surface of the HDPE floating cover film covering the water surface of the sewage pool is solved.

Description

technical field [0001] The invention relates to the technical field of high-efficiency anti-seepage of landfills, in particular to an operation method for repairing floating cover membranes with water. Background technique [0002] The leachate sewage tanks of domestic waste landfills are used to fill high-concentration sewage. In order to avoid rainwater mixing and increase the sewage treatment capacity, and avoid the stench of leachate from emitting. The leachate sewage pool is basically made to be close to the sewage surface and can automatically rise and fall with the water level. The flexible HDPE floating cover membrane is used to seal the leachate sewage pool to achieve good rain and sewage diversion and airtight odor control functions. [0003] During the operation of the sewage tank, the HDPE floating cover film may be damaged due to the entry of foreign matter, external force, etc., such as figure 1 As shown, the sewage in the sewage tank overflows from the damage...

AI Technical Summary

Problems solved by technology

[0004] However, the difficulty of repairing holes in the membrane surface of the floating cover must create a dry and clean surface environment on the membrane surface around the hole.

Since the HDPE floating cover membrane is close to the surface of the sewage, the surrounding area of ​​the damage is basically in a state of flooding, and the HDPE floating cover membrane is a flexible and thin material. When the maintenance personnel approach the damage, due to the gravity of the maintenance personnel Cause HDPE floating cover membrane to press down, such as figure 2 As shown, further causing the damaged sewage to show a larger flow of overflow, or even jetting, it is difficult to repair

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