Partial-immersion rotary disc filter tank used for deep treatment of sewage and reuse of reclaimed water

Abstract

The invention provides a partial-immersion rotary disc filter tank used for deep treatment of sewage and reuse of reclaimed water. The partial-immersion rotary disc filter tank comprises a water inletchannel, a water inlet weir, filter discs and a water outlet channel; the water inlet channel, the water inlet weir, the filter discs and the water outlet channel are sequentially arranged accordingto the flow direction of water; a water inlet electric rotary regulating weir gate is arranged on the water inlet weir; the water inlet channel is connected with the filter discs; the surface of eachfilter disc is covered with a fiber filter cloth; the middle part of the filter discs is connected with a clear water channel; a water outlet weir is arranged between the clear water channel and the water outlet channel; and a water outlet electric rotary adjusting weir gate is arranged on the water outlet weir. The invention also provides the beneficial effects of the partial-immersion rotary disc filter tank. According to the invention, the filter cloths woven by using hydrophilic modified fibers are adopted as a filter medium, the filtering depth of the filter medium is large, the pollutantcarrying capacity is strong, and the surface is not easily dried and hardened. The partial-immersion rotary disc filter tank breaks through the limitation of the operation modes of common fiber rotary disc filters in the market and can be operated with partial immersion, and the immersion depth can be adjusted. The hydraulic loss is saved by 1/3-1/2, and the energy consumption is low.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a filtering device. Background technique [0002] With the construction and development of sewage treatment facilities in our country, the amount of sewage treatment has increased year by year, and the role of sewage regeneration and resource utilization is of great significance. In recent years, the pollution of surface water in some areas of the country has been deteriorating, and surface water and groundwater resources have become increasingly scarce. As the second water source of the city, urban sewage is more stable and reliable than seawater and rainwater. The realization of advanced sewage treatment and reuse of reclaimed water is of great strategic significance for alleviating the shortage of water resources and ensuring urban water supply. At present, the ordinary rotary disc filter on the market operates in the form of fully submerged filtration i...

AI Technical Summary

Problems solved by technology

Such a setting method can easily cause the filtered water to be polluted by the sewage in the collection tank, seriously affecting the quality of the effluent

And because it is set in the central tube, once a problem occurs, it is extremely difficult to repair, and the production can only be stopped

[0004] Chinese patent 201310144974.2 discloses a filter device for semi-submerged rotary disc filter equipment for deep filtration of sewage. The filter screen of the filter device is made of stainless steel 316L, and its effective filter depth is very limited, so its dirt-holding capacity is small

Increased processing costs

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