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High-efficiency denitrification activity sand filter system

A filtration system and denitrification technology, applied in anaerobic digestion treatment, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of low denitrification efficiency, high cost, and large filtration water loss, etc., and achieve process control Convenience, high efficiency and low cost

Active Publication Date: 2016-05-25
BEIJING SOUND ENVIRONMENTAL ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The denitrification biofilter in the prior art has the complex installation and control system of the backwash water distribution and gas distribution system, which is easily blocked by the influence of suspended solids, poor denitrification effect, and high cost; the continuous flow denitrification filter has a deep filter bed, Large filtration water loss, less denitrifying bacteria content in the sand bed, low impact load resistance, and low denitrification efficiency

Method used

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specific Embodiment approach

[0014] The high-efficiency denitrification active sand filtration system of the present invention, its preferred embodiment is:

[0015] Including the denitrification active sand filter tank, the denitrification active sand filter tank is arranged in sequence from bottom to top in the front filter area, biological reaction area, post filter area, filter material cleaning area, the front filter area, biological reaction area, There is a central pipe longitudinally running through the rear filtering area, the upper end of the central pipe is connected with a water inlet pipe, the lower end of the central pipe is provided with a water distributor, the filter material cleaning area is provided with a water outlet pipe, and the lower part of the front filtering area A cone is provided, and the lower end of the cone is provided with a vent pipe and an inspection port;

[0016] A quartz sand bed is provided in the front filter area, a biological carrier box is provided in the biologi...

specific Embodiment

[0022] In this implementation example, the high-efficiency denitrification active sand filter system is as follows: figure 1 , figure 2 As shown, it includes: water inlet pipe 1, water outlet pipe 2, sand lifting pipe 3, sand washing water outlet pipe 4, sand washing device 5, quartz sand bed 6, sand distributor 7, outrigger 8, sewage tank 9, cloth Water container 10, cone 11, water inlet valve 12, vent pipe 13, inspection port 14, vent valve 15, biological carrier box 16, denitrification active sand filter tank 17.

[0023] The high-efficiency denitrification active sand filter system is divided into four work areas: pre-filter area, biological reaction area, post-filter area and filter cleaning area

[0024] Pre-filtering area: Sewage enters the high-efficiency denitrification active sand filter tank 17 through the water inlet pipe 1, flows through the water distributor 10 from bottom to top, and the sewage first passes through the pre-filtering area of ​​the lower sand la...

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Abstract

The invention discloses a high-efficiency denitrification activity sand filter system. The high-efficiency denitrification activity sand filter system comprises a denitrification activity sand filter basin, wherein the denitrification activity sand filter basin is sequentially provided with a front filter area, a biological reaction area, a rear filter area and a filter material washing area from bottom to top; a central pipe longitudinally penetrates through the front filter area, the biological reaction area and the rear filter area; the upper end of the central pipe is connected with a water inlet pipe; a water distributor is arranged on the lower end of the central pipe; the filter material washing area is provided with a water outlet pipe; a cone is arranged at the lower part of the front filter area; a blow-down pipe and an overhauling opening are arranged on the lower end of the cone; a quartz sand casting bed is arranged in the front filter area; the biological reaction area is provided with a biological carrier box; a sand distributor is arranged in the cone; the filter material washing area is provided with a sand washer and a sewage tank; the sewage tank is provided with a sand washing water outlet pipe; the lower part of the sand distributor is connected with the upper part of the sand washer through a sand lifting pipe which penetrates through the central pipe. The high-efficiency denitrification activity sand filter system disclosed by the invention integrates filtration and denitrification biological treatment into a whole and has the advantages that a filter bed is shallow, no complicated back washing system is provided, the manufacturing cost is low, the total nitrogen removing efficiency is high, and a process control system is simple and convenient; the utilization rate of a device is increased.

Description

technical field [0001] The invention relates to a sewage advanced treatment technology, in particular to a high-efficiency denitrification active sand filter system. Background technique [0002] The methods for removing total nitrogen from the effluent of the secondary sedimentation tank currently include denitrification biological filter and continuous flow denitrification filter. [0003] The denitrification biofilter in the prior art has the complex installation and control system of the backwash water distribution and gas distribution system, which is easily blocked by the influence of suspended solids, poor denitrification effect, and high cost; the continuous flow denitrification filter has a deep filter bed, The disadvantages of large filtration water loss, less denitrifying bacteria content in the sand bed, low impact load resistance, and low denitrification efficiency. Contents of the invention [0004] The purpose of the present invention is to provide a high-e...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/28C02F3/2866
Inventor 陈劲松王凯姜安平张春艳王丽丽
Owner BEIJING SOUND ENVIRONMENTAL ENG