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Water feeding method and device for improving nitrogen removal efficiency of constructed infiltration system

A technology of denitrification efficiency and water inlet device, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of low hydraulic load and increased workload, and meet the requirements Low, improve the removal rate, improve the effect of nitrogen removal efficiency

Active Publication Date: 2014-12-03
INST OF AQUATIC LIFE ACAD SINICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the segmented water intake method has the disadvantage of low hydraulic load, and due to the different microenvironments of different layers of the quick seepage tank, it is necessary to select an appropriate segmented water intake position and water intake ratio for different water quality in order to improve the CRI system. The removal rate, which increases the workload in the actual operation process

Method used

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  • Water feeding method and device for improving nitrogen removal efficiency of constructed infiltration system
  • Water feeding method and device for improving nitrogen removal efficiency of constructed infiltration system
  • Water feeding method and device for improving nitrogen removal efficiency of constructed infiltration system

Examples

Experimental program
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Effect test

Embodiment 1

[0038] according to figure 1 It can be seen that a water intake method for improving the denitrification efficiency of the artificial infiltration system comprises the following steps:

[0039] (1) Raw sewage collection and pre-treatment: The raw sewage 1 in the drainage ditch E is pumped into the sedimentation tank A by the control valve D connected to the sedimentation tank A and the sewage pump 2; the raw sewage 1 can be removed in the sedimentation tank A and suspended At the same time, the microorganisms attached to the surface of floating plants and their own absorption of nutrients can remove part of N, P, BOD and COD;

[0040] (2) Water level raising: The pretreated raw sewage 1 in the sedimentation tank A is lifted to the high level tank B by the sewage pump 3, and the water stored in the high level tank B can pass through the control valve F under the action of gravity when needed Direct access to quick seepage pool C.

[0041] (3) Advanced treatment: After the hig...

Embodiment 2

[0043] according to figure 2 , image 3 It can be seen that a water inlet device for improving the denitrification efficiency of the artificial rapid infiltration system: it includes a sedimentation tank A, a high level tank B, a quick seepage tank C, a control valve D, a drainage ditch E, a control valve F, and raw sewage 1, Sewage pump 2, sewage pump 3, water inlet pipe 4, perforated water distribution pipe 5, water outlet pipe 6, filler 7 (the surface layer is natural river sand with a particle size of 1.5-2 mm, and the second layer is natural river sand with a particle size of 2-4 mm Sand, the third layer is pebbles with a particle size of 20-100 mm, the fourth layer is coarse sand with a particle size of 4-8 mm, and the fifth layer is pebbles with a particle size of 20-100 mm). It is characterized in that: the sedimentation tank A is connected to the drainage ditch E through the sewage pump 2 and the control valve D on the pipeline, and the drainage ditch E regulates th...

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Abstract

The invention discloses a water feeding method and device for improving the nitrogen removal efficiency of a constructed infiltration system. The method comprises the following steps: A, collection and pretreatment of original sewage: pumping the original sewage in a drainage ditch into a sedimentation tank through a control valve and a sewage pump which are connected with the sedimentation tank, and removing suspended matters and sand from the original sewage in the sedimentation tank; B, water lift: lifting the pretreated original sewage in the sedimentation tank to an elevated tank by the sewage pump; and C, deep treatment: controlling the effluent in the elevated tank by the control valve, discharging the pretreated water to a packing layer of a rapid infiltration tank, thus achieving sewage treatment. The sedimentation tank is connected with the drainage ditch through the sewage pump and the control valve on a pipeline, the sewage pump is connected with the sedimentation tank, the effluent is connected with the elevated tank through the sewage pump, the elevated tank is connected with a water inlet pipeline, the water inlet pipeline is connected with the rapid infiltration tank through the control valve on the pipeline, and a perforated water distribution pipe is connected with a water outlet pipeline. Nitrogen, phosphorus and COD (chemical oxygen demand) can be removed by the CRI (Constructed Rapid Infiltration) system. The device is simple in structure and convenient to use, and can be used for realizing efficient purification of sewage.

Description

technical field [0001] The invention relates to the technical field of removing nitrogen in sewage by using an artificial rapid infiltration system, more specifically relates to a water intake method for improving the denitrification efficiency of an artificial rapid infiltration system, and also relates to a method for improving the denitrification efficiency of an artificial rapid infiltration system The water inlet device is suitable for treating domestic sewage in most rural areas and small towns in my country. Background technique [0002] With the rapid economic development and increasing human activities, more and more industrial waste water, domestic sewage, domestic garbage and pesticides and other pollutants are discharged into natural water bodies, causing varying degrees of pollution to water resources. While people are pursuing economic interests, the society's demand for water continues to increase. However, the environmental protection awareness of Chinese resi...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 方涛鲍少攀汪贵和唐巍
Owner INST OF AQUATIC LIFE ACAD SINICA
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