Sewage treatment plant laminar flow type sedimentation tank sludge scraping and sucking device and method

Abstract

The invention relates to a sewage treatment plant laminar flow type sedimentation tank sludge scraping and sucking device, which comprises a laminar flow type sedimentation tank, a travelling crane, a PLC and a gas stripping type sand sucker, wherein a sludge scraping plate frame and a telescopic cylinder are hinged to the bottom of the travelling crane, the tail end of the piston rod of the telescopic cylinder is hinged to one side of the sludge scraping plate frame, a sludge scraping plate is mounted at the bottom end of the sludge scraping plate frame, two sets of ultrasonic sensors with vertically downward probes are further installed at the bottom of the traveling crane, and a calibration ring is installed on the wheel shaft of the traveling crane. According to the invention, the thickness of the sludge is judged according to the known height difference between the ultrasonic sensor and the bottom of the laminar flow type sedimentation tank, if the thickness of the sludge is large, the number of times that the travelling crane goes back and forth in the area is increased while the operation frequency of the gas stripping type sand sucker is increased, and if the thickness of the sludge is small, the number of times that the travelling crane goes back and forth in the area is reduced while the operation frequency of the gas stripping type sand sucker is reduced, so that idle work is avoided, the mud scraping efficiency is improved, and energy waste is reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a mud scraping and suction device and method for an advection sedimentation tank of a sewage treatment plant. Background technique [0002] As one of the main facilities for removing suspended solids in water, the advection sedimentation tank consists of four parts: water inlet, water outlet, water flow part and sludge bucket. It has the advantages of simple structure, convenient management and strong impact load resistance. It is used in sewage The processing industry has been widely used. [0003] However, in the actual operation process, the mud level near the water inlet is generally high and the mud level near the water outlet is low in the advection sedimentation tank, while the on-site operation mode of the driving-type dredge scraper is generally automatic on-site and non-stop In operation, the sludge in the area with high mud level cannot be scraped into the sl...

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Problems solved by technology

[0003] However, in the actual operation process, the mud level near the water inlet is generally high and the mud level near the water outlet is low in the advection sedimentation tank, while the on-site operation mode of the driving type dredge scraper is generally automatic on-site back and forth without stopping In operation, the sludge in the area with high mud level cannot be scraped into the sludge hopper, while the sludge scraper in the area with low mud level does useless work and wastes electric energy

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