Domestic sewage processing system with anaerobic-aerobic combined biological filter

An anaerobic biological filter, domestic sewage technology, applied in water/sewage multi-stage treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. N effect is poor and other problems, to achieve the effect of easy cleaning, improved water quality, and good efficiency

Inactive Publication Date: 2010-12-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the problem that the existing domestic sewage treatment system has poor effect of P and N removal, poor effluent quality, and it is difficult to meet the standard of "Pollutant Discharge Standards for Urban Sewage Treatment Plants" (GB 18918-2002) which is being implemented in my country , and then provides a domestic sewage treatment system with anaerobic-aerobic combined biofilter

Method used

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  • Domestic sewage processing system with anaerobic-aerobic combined biological filter
  • Domestic sewage processing system with anaerobic-aerobic combined biological filter

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specific Embodiment approach 1

[0010] Specific implementation mode one: as figure 1As shown, the domestic sewage treatment system pretreatment device with anaerobic-aerobic combined biofilter described in this embodiment, biological floc filtration sedimentation tank, backwash waste water tank 20 and clear water tank 24; The sewage treatment system also includes anaerobic biological filter, BIOFOR biological aerated filter (aerobic biological filter), phosphorus removal and dosing device, backwash water pump 23, nitrification liquid return pump 28, waste water return pump 29, nitrification liquid return flow Water pipe 48, backwash water pipe 43, waste water return pipe 49, bottom water inlet pipe 11, anaerobic biological filter backwash liquid outlet pipe 51, aerated biological filter backwash liquid outlet pipe 52, dosing pipe 53, water outlet pipe 54 , several control valves 60 and ultraviolet disinfection device 32; said pretreatment device, biological floc filter sedimentation tank, anaerobic biologica...

specific Embodiment approach 2

[0013] Specific implementation mode two: as figure 1 As shown, the pretreatment device in this embodiment is composed of a grid room 41, a coarse grid 1, a fine grid 2, and a swirl grit chamber 3, and the coarse grid 1 and the fine grid 2 are arranged from left to right They are sequentially arranged in the upper cavity of the grid room 41 , and the swirling flow grit chamber 3 is arranged on the right side of the grid room 41 . The coarse grid is a rotary grid with a grid spacing of 10mm. The fine grid is a rotary drum grid with a grid spacing of 2mm. Coarse grid 1 and fine grid 2 have realized double interception. The size of the cyclone grit chamber 3 is determined according to the water inflow. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0014] Specific implementation mode three: as figure 1 As shown, the biological floc filtration sedimentation tank in this embodiment is composed of a tank body 4, a water distribution pipe 5, an outlet channel 6 and a mud discharge pipe 9. The outlet channel 6 is arranged in the upper part of the pool body 4, and the pool body 4 The bottom end face is provided with several mud grooves 8, the water distribution pipe 5 is arranged in the bottom of the pool body 4 and one end of the water distribution pipe 5 passes through the side wall of the pool body 4, and the mud discharge pipe 9 is arranged in the bottom of the pool body 4 and Located below the water distribution pipe 5 , the mud discharge pipe 9 passes through several mud tanks 8 and one end of the mud discharge pipe 9 passes through the side wall of the tank body 4 . The high-efficiency biological floc filtration and sedimentation device is an existing technology, in which the sewage is efficiently filtered and precipita...

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Abstract

A domestic sewage processing system with anaerobic-aerobic combined biological filter relates to a domestic sewage processing system. The invention solves the problems of poorer effects for removing P and N, poor effluent quality, and being hard to achieve the regulated discharge standard of the existing domestic sewage processing system. A pre-processor, a biological flocculating constituent filter sedimentation tank, a BIOFOR anaerobic biological filter, a BIOFOR aeration biological filter, a back-flushing sewage pool and a clean water pond are arranged in sequence from left to right; the torque flow sand trap of the pre-processor is communicated with the water distribution pipe of the biological flocculating constituent filter sedimentation tank; the outlet channel of the biological flocculating constituent filter sedimentation tank is connected with the water distribution area of the BIOFOR anaerobic biological filter; the outlet channel of the BIOFOR anaerobic biological filter is communicated with the water distribution area of the BIOFOR aeration biological filter; the outlet channel of the BIOFOR aeration biological filter is communicated with one end of an outlet pipe. The P and N removing effects for using the invention to process the domestic sewage are good. Various indexes of the water body after being processed all can achieve the regulated discharge standard.

Description

technical field [0001] The invention relates to a domestic sewage treatment system. Background technique [0002] The "Discharge Standards of Pollutants for Urban Sewage Treatment Plants" (GB 18918-2002), which is being implemented in my country, puts forward higher requirements for the removal of P and N. However, the activated sludge method in the existing urban sewage treatment is difficult to achieve this goal. Therefore, it is necessary to build a new sewage plant or transform the existing sewage plant to have the function of removing P and N. At the same time, with the acceleration of urban development and the expansion of urban areas, sewage treatment facilities are getting closer to urban areas, and some are even built in urban areas. Therefore, land use for sewage plants is strictly restricted. Traditional sewage treatment plants inevitably produce peculiar smell and noise, and occupy a large area. Due to the above objective needs, it is necessary to find new se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/32C02F9/14C02F1/52C02F3/30
Inventor 韩洪军胡宏博林杉李雨菲张凌瀚
Owner HARBIN INST OF TECH
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