Tandem or parallel untreated sewage fiber and hair filter

Abstract

The invention relates to a tandem or parallel untreated sewage fiber and hair filter and belongs to the field of sewage waste heat use. According to the device, untreated sewage enters a filter chamber through a water inlet, in order to ensure the filter filtration amount, the untreated sewage is filtered through a tapered steel filter brush, which has a large water filter area and can contact with upward flowing sewage and scrape a large amount of fiber-type filamentous dirt having large buoyancy in a first filtering process, the filtered sewage is fed into a second filter chamber through a connection port, and the sewage is filtered through a cylindrical steel filter brush, which can contact with downward flowing sewage and scrape a small amount of sheet-type dirt having small buoyancy in a second filtering process, wherein in order to improve filtering effects, the filters can be connected in series through a connection port and the sewage can be repeatedly filtered. The filter filtering effects are improved along with increasing of filter use time. Along with continuous filter filtration, a filtering gap is reduced so that a part of dirt having sizes of less than or equal to 3mm can be intercepted. In order to ensure flow and prolong maintenance time, one or more filters can be connected in parallel to improve a filtering flow.

Description

technical field [0001] The invention belongs to the field of sewage waste heat utilization. By reducing fibers and hairy substances in sewage, the strict requirements on heat exchange equipment are reduced, the occurrence of blockage of heat exchange equipment is prevented, and heat exchange efficiency is improved. Background technique [0002] At present, raw sewage waste heat recovery has become an important domestic environmental protection energy, but raw sewage has very strict requirements on heat exchange equipment. Although it has been filtered by multiple equipment in the early stage, heat exchange equipment is still prone to blockage, and the cause of blockage is fiber 1. Scale caused by hair, other sundries are filled in the gap after accumulation, until the heat exchanger is completely blocked, the maintenance and cleaning work is very heavy. Raw sewage is obtained from the main urban sewage canal, and in the city, every inch of land is expensive, and there is no ...

AI Technical Summary

Problems solved by technology

[0011] In view of the fact that the traditional filtration equipment for primary sewage occupies a large area, the filtration effect is poor, and the particulate matter ≤ 3mm after mechanical coarse filtration, as well as the flexible filamentary substances such as fibers, hair, and plastic cloth, cannot be filtered out. Heater, easily cause blockage of heat exchanger

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