River bank type infiltration system and method with water body remediation function

A water body restoration and percolation technology, applied in chemical instruments and methods, open-air water surface cleaning, water conservancy projects, etc. Increase the contact time and improve the effect of purification ability

Pending Publication Date: 2018-02-02
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But its shortcomings are: First, the length of the seepage path of the system is insufficient, when the hydraulic load reaches 2.0m 3 /m 2 When d is above, the hydraulic retention time is shortened, the metabolism of microorganisms is limited, and the removal rate of COD, TN, and TP decreases, thus affecting the water purification efficiency
Second, the osmotic pressure required by the system needs to be realized by using water pumps, long-term operation and high energy consumption
First of all, excavating the river bed to build the infiltration project itself destroys the living environment of benthic animals and causes secondary pollution. At the same time, the inf

Method used

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  • River bank type infiltration system and method with water body remediation function
  • River bank type infiltration system and method with water body remediation function
  • River bank type infiltration system and method with water body remediation function

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Embodiment 1

[0033] This embodiment is a river bank type infiltration system with water restoration function, such as figure 1 , 2 shown. This embodiment includes: a water diversion facility with a forebay 1, a plurality of infiltration tanks 2 arranged in steps along both sides of the river bank are arranged downstream of the water diversion facility, and a trash grid 3 is arranged upstream of the inlet of the infiltration tank, The entrance and exit of each filter tank are respectively provided with respective water inlet gates 4 and water outlet gates 5; each water outlet gate is connected to the water outlet tank 6 connected with the river, and the filter tanks are sequentially provided with porous water-retaining parapets from the entrance to the exit 7. The front permeable section 8, the multi-stage permeable section 9, the rear permeable section 10, and the perforated plate 11.

[0034] The water diversion facility described in this embodiment may be a water retaining facility on ...

Embodiment 2

[0044] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment on water diversion facilities. The water diversion facility described in this embodiment is a combination of a dam or a water pump and a forebay; the direction of the infiltration tank is either along the river bank or at a certain angle or perpendicular to the river bank.

[0045] In urban rivers with steep banks and insufficient space, dams are built on the river, or existing dams are used to form a forebay with a certain water level, reaching at least the elevation of the first-order infiltration tank, such as image 3 As shown, the infiltration tank flowing longitudinally along the river bank can be used, and the sewage flows longitudinally along the river bank, and is discharged into the downstream river after purification.

Embodiment 3

[0047] This embodiment is an improvement of the above embodiment, and is a refinement of the above embodiment about the percolation tank. Between the various infiltration tanks described in this embodiment, a communication gate 12 that can make the water flow flow in series in each step infiltration tank is provided near the inlet and the outlet, as figure 1 shown.

[0048] The function of the connecting gate can make the infiltration tanks of different elevations have connecting gates connected to each other at the beginning and the end. When the quality of the upstream sewage is too poor, it can be purified by infiltration in series. The sewage first enters the upper infiltration tank, and after flowing through the entire infiltration tank, it flows into the next-level infiltration tank through the connecting gate at the end, and flows into the next level infiltration tank at the connecting gate at the first end after flowing through the infiltration tank in the reverse dir...

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Abstract

The invention relates to a river bank type infiltration system and method with water restoration function, comprising: a water diversion facility with a forebay, a plurality of infiltration tanks arranged in steps along both sides of the river bank are arranged downstream of the water diversion facility, and the inlet of the infiltration tank is upstream Garbage grids are set up, and respective inlet and outlet gates are set at the inlet and outlet of each filter tank; each outlet gate is connected to the outlet tank connected with the river, and the infiltration tank is sequentially equipped with porous water-retaining parapets, Front permeable section, multi-stage percolation section, rear permeable section, perforated plate. The infiltration system is located on the bank of the river or lake, combined with the existing water conservancy project, and connected with the shore topography, will not affect the normal operation of the original water conservancy project, while maintaining and improving the water quality of the downstream river, it can also be combined with the river bank Renovation, planting green plants on the upper part, beautifying the environment. The system has low cost and is suitable for purifying heavily polluted urban rivers, deep denitrification and dephosphorization of tail water of sewage treatment plants, and control of agricultural non-point source pollution.

Description

technical field [0001] The invention relates to a river bank type infiltration system and method with water body repairing function, is an environmental protection system and method, and is an engineering measure for controlling river pollution and can be renewed and maintained. Background technique [0002] There are three main treatment methods for existing polluted water bodies, one is the activated sludge method, the second is the sewage biofilm method, and the third is the ecological treatment method. The activated sludge method is the main process type of the existing sewage treatment plants in my country, which is equivalent to the artificial enhancement of the self-purification ability of the water body. It has the advantages of high treatment capacity and good effluent quality, but the engineering investment and maintenance costs of this type of treatment method are relatively high. Specific treatment processes include AB method, SBR method, oxidation ditch method, ...

Claims

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Application Information

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IPC IPC(8): C02F3/30E02B15/06
CPCE02B15/06C02F3/302
Inventor 柳海涛孙双科郑铁刚李广宁姜涵张超
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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