Slow-release purification device and method for reducing overflow pollution in rainy days in situ

A purification device, a technology for rainy days, applied in chemical instruments and methods, water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem of poor removal of dissolved pollutants, inability to quantitatively add or replace chemicals, and occupy a It can reduce the frequency of material dosing or replacement, the technology is easy to master, and the installation and operation costs are low.

Pending Publication Date: 2021-11-26
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of cyclone separators requires regular cleaning of the sediment in the device, and the removal effect of dissolved pollutants is not good; the rapid filter pool usually occupies a large area and needs to be installed with related devices, which is costly
The most important thing is that most of the functional materials used are coagulants,

Method used

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  • Slow-release purification device and method for reducing overflow pollution in rainy days in situ
  • Slow-release purification device and method for reducing overflow pollution in rainy days in situ

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0041] Example one

[0042] The daily monitoring data, to estimate the range of the contact surface with the river water sewage outfall rain 0900 different flow rates, quality permeable cylindrical mounting 6 (using aperture 4mm) scaffold composed of a porous wall repair response below the contact surface, sewage draft tube 9 provided at the opening, the overflow water quality introduced to a permeable reactive barrier repair, the cylinder cross sectional area should be sufficient to receive most of the sewage overflow. 4 release material selection alginate entrapped calcium peroxide release material (average particle diameter using 6mm), sustained release dosage material 4 in two vertically separated net (pore size using 4mm) between the network connecting the sensor compartment, when slow 6 release material when exhausted, remind sustained release dosage material. Wall size can be sustained release material selected speed, the effect of the treatment of sewage overflow and the ex...

Example Embodiment

[0043] Example 2

[0044] On the basis of the first embodiment, the present invention provides a quality repair replacement permeable reactive barrier structure, such as figure 2 , The wall repair reaction in the second embodiment of quality-permeable casing structure using the cylindrical structure, provided with a weight at the bottom of the tank 8 to the reinforcement, the counterweight 8 through the casing vertically disposed river sediment 7 , the top of the housing is mounted within the door opening 2, the box body 3 is provided on every other network, leaving 50cm spacing between the door 3 and the upper compartment of the web 2, the upper spacer mesh 4 filled with the delivery material between the housing 3 and the bottom.

[0045] The daily monitoring data, estimating outfall rain different flow rates range contact surface 9 with the sewage water of the river, the water quality of the installation box consisting of a cylindrical wall repair reaction below the contact surf...

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Abstract

The invention provides a slow-release purification device and method for in-situ reduction of overflow pollution in rainy days. The slow-release purification device for in-situ reduction of overflow pollution in rainy days comprises a permeable water quality restoration reaction wall which is arranged in river water below a drain outlet at the tail end of a drain pipe, wherein a slow-release material is arranged in the permeable water quality restoration reaction wall. The permeable water quality remediation reaction wall can remarkably reduce the concentration of pollutants in water near a sewage draining exit, and overflow pollution in rainy days is greatly reduced. The facility is low in cost and convenient to install and popularize, and is a simple, effective and economical in-situ reduction method for overflow pollution in rainy days.

Description

technical field [0001] The invention relates to the field of restoration of river and lake water bodies, in particular to a slow-release purification method for in-situ reduction of overflow pollution in rainy days. Background technique [0002] With the acceleration of urbanization in our country, the phenomenon of black and smelly rivers in rainy days has become increasingly prominent, which is more common in most cities in my country, especially in the southern region. Studies have shown that the main cause of black and smelly urban water bodies in rainy days in my country is the rainy day overflow pollution of diversion system and combined system. The overflow sewage in rainy days contains a large amount of pollutants from different pollution sources, and it is directly discharged into the river without sufficient treatment, seriously damaging the water environment and aquatic ecosystem of rivers and lakes. For example, in the southern part of my country, when the combi...

Claims

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Application Information

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IPC IPC(8): C02F1/72
CPCC02F1/722
Inventor 徐祖信张云惠楚文海李怀正
Owner TONGJI UNIV
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