Method and device for efficiently treating black and odorous river through rapid biofilm formation of filler

A technology for rivers and black odors, applied in the field of water environment treatment and restoration, can solve the problems of low operating cost, long restoration period, and large capital investment, and achieve the effect of short treatment period, low cost, and improved economic benefits

Pending Publication Date: 2020-07-17
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Physical methods include river channel dredging, water diversion and drainage, etc., which can quickly eliminate source pollution in water bodies, but these methods require a large amount of engineering and capital investment; chemical methods include enhanced flocculation, chemical algae killing, and adding iron / aluminum salts, etc. , these methods can effectively remove nitrogen and phosphorus in black and odorous water, but the medicines are expensive and easily cause secondary pollution; the ecological restoration method is one of the important technical means for black and odorous river treatment, and the operation cost is low, but its effect is slow and the restoration period long

Method used

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  • Method and device for efficiently treating black and odorous river through rapid biofilm formation of filler
  • Method and device for efficiently treating black and odorous river through rapid biofilm formation of filler
  • Method and device for efficiently treating black and odorous river through rapid biofilm formation of filler

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for efficiently treating black and odorous river courses after quickly forming a film in activated sludge by using fillers, comprising the following steps:

[0032] 1) Select polyurethane biological filler;

[0033] 2) Put the filler in the laboratory activated sludge reactor for film coating, the filler is completely immersed in the activated sludge, the sludge concentration is 4862mg / L, and the film coating time is 4 days. The filler before and after film coating is as follows: Figure 1-2 As shown, the biomass on the filler after the film hanging is completed is 1.2g / g;

[0034] 3) Collect black and odorous water, and the measured COD is 73.1mg / L; NH 4 + -N is 6.5mg / L;

[0035] 4) Put 100g of filler that has been film-hanged in step 2) in a container filled with 20L of collected black and odorous water, and aerate to make the dissolved oxygen above 2mg / L. Replace 1L of black and smelly water every day;

[0036] 5) When the treatment was stable after 10 da...

Embodiment 2

[0038] A method for efficiently treating black and odorous river courses after quickly forming a film in activated sludge by using fillers, comprising the following steps:

[0039] 1) Select polyurethane biological filler;

[0040] 2) Place the filler in the laboratory activated sludge reactor for film coating, the filler is completely immersed in the activated sludge, the sludge concentration is 4765mg / L, and the film coating time is 6 days. After the film coating is completed, the organisms on the filler The amount is 1.6g / g;

[0041] 3) Collect black and odorous water, and the measured COD is 80.5mg / L; NH 4 + -N is 6.4mg / L;

[0042] 4) Put 100g of filler that has been film-hanged in step 2) in a container filled with 20L of collected black and odorous water, and aerate to make the dissolved oxygen above 2mg / L. Replace 1L of black and smelly water every day;

[0043] 5) When the treatment was stable after 8 days, the measured COD was 23.1mg / L, ammonia nitrogen was 1.7mg...

Embodiment 3

[0045] A method for efficiently treating black and odorous river courses after quickly forming a film in activated sludge by using fillers, comprising the following steps:

[0046] 1) Select polyurethane biological filler;

[0047] 2) Place the filler in the laboratory activated sludge reactor for film coating, the filler is completely immersed in the activated sludge, the sludge concentration is 5136mg / L, and the film coating time is 8 days. After the film coating is completed, the organisms on the filler The amount is 2.4g / g;

[0048] 3) Collect black and odorous water, and the measured COD is 90.7mg / L; NH 4 + -N is 7.5mg / L;

[0049] 4) Put 100g of filler that has been film-hanged in step 2) in a container filled with 20L of collected black and odorous water, and aerate to make the dissolved oxygen above 2mg / L. Replace 1L of black and smelly water every day;

[0050] 5) When the treatment was stable after 5 days, the measured COD was 20.3mg / L, ammonia nitrogen was 1.5mg...

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Abstract

The invention discloses a method and a device for efficiently treating a black and odorous river by utilizing rapid biofilm formation of a filler. The method comprises the following steps: 1) selection of the filler: selecting a soft porous filler; 2) biofilm formation: putting the soft porous filler selected in the step 1) into an activated sludge aerobic tank for biofilm formation; and 3) treatment: putting the filler having undergone biofilm culturing in the step 2) into a black and odorous river for treatment, and recovering the filler until the water quality of the black and odorous rivermeets requirements. According to the method, the filler with high biomass and high degradation activity obtained after biofilm formation of activated sludge is used for treating the black and odorousriver; remarkable water body purification effect is obtained; the biofilm formation method is economical, rapid and more practical; and the device is convenient to manufacture, low in cost and capable of being recycled.

Description

technical field [0001] The invention belongs to the field of water environment treatment and restoration, and in particular relates to a method and a device for efficiently treating black and odorous river courses by using soft porous fillers to rapidly form membranes in activated sludge. Background technique [0002] The river course is the main carrier of the water ecological environment, which is directly related to people's quality of life. In recent years, my country has made great efforts to improve the river water environment, and has achieved remarkable results. However, with the continuous development of the social economy and the acceleration of urbanization, the governance of the river water environment is still under great pressure. Phenomena such as black and odorous water bodies and eutrophication continue to occur, especially black and odorous water bodies, which completely deprive the water of use. functions, and affect landscapes as well as human life and h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/00C02F3/10C02F101/16
CPCC02F3/00C02F3/10C02F2209/08C02F2303/02C02F2103/007C02F2209/14C02F2209/44C02F2101/16Y02W10/10
Inventor 潘丙军陈佳潘煜键邹金特金泽豪林健瑞龚悦周磊李军
Owner ZHEJIANG UNIV OF TECH
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