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Method for treating black and odorous water body bottom mud through microelectrolysis material

A black and odorous water body, micro-electrolysis technology, applied in the oxidation treatment of sludge, electrochemical sludge treatment, sludge treatment and other directions, can solve the problems of black and odorous water body treatment, difficult to intercept or remove pollution and other problems

Active Publication Date: 2016-04-20
广东灵捷制造化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, the premise of these methods generally requires sewage interception or sewage removal, and many cities in China, especially rivers and lakes in old urban areas, are difficult to intercept or transport sewage, making the treatment of such black and odorous water bodies a difficult problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The black and smelly water body in this example is a middle school landscape lake with an area of ​​about 1 acre. The water body emits a foul smell due to pollution brought by rainwater. The thickness of the bottom mud is about 20 cm, the water surface is covered with blue algae, and the ammonia nitrogen in the water body reaches 10 mg / l. Add 500kg of Chinese patent ZL200910038783.1 iron-carbon micro-electrolysis material (without ceramsite), which is about 4‰ of the amount of sludge (the proportion of sludge is taken as 1), and then add H 2 O 2 (Concentration: 27.5%) After 50kg, 10 minutes, the odor is cleared, the black bottom mud turns to grayish white, all the cyanobacteria disappear after 3 days, and the ammonia nitrogen in the water body drops to 0.1mg / l after one week. The treatment has been implemented for 36 months and the water quality is stable .

Embodiment 2

[0031] This embodiment is a city park landscape lake with an area of ​​about 30 mu. Because part of the domestic sewage from the hotel next to the park is discharged into the lake, the bottom mud in the lake is black and viscous, and the odor of the water in the lake is difficult to hide. Sprinkle Chinese patent ZL201210452101.3 alkaline micro-electrolysis material 20000kg (without ceramsite) and 2000kg sodium percarbonate into the lake. After one day, the odor disappeared and the bottom mud turned into a loose gray-brown. After one week, the ammonia nitrogen in the water changed from 8mg / l was reduced to 2mg / l, and dissolved oxygen was increased from 1mg / l to 3mg / l. It has been 12 months since implementation, and no offensive odor has appeared.

Embodiment 3

[0033] This embodiment is an inland river in a certain city, which is a sewage and flood discharge channel in an area of ​​4.8 square kilometers in the city. When it rains, it undertakes the task of draining waterlogging and flooding, and usually undertakes the task of draining sewage. The flow rate is 0.5m / s during the dry season. As an example, the 750m middle section of the river with a total length of about 4 kilometers is hard-bottomed. Due to the accumulation of organic pollutants, the whole river is stinking and pungent, especially in the middle section of the hard bottom. The thickness of the sludge in the middle section of the hard bottom is 80cm, and the Chinese patent ZL200910038783.1 iron-carbon microelectrolysis material 160,000kg (without ceramsite) and the Chinese patent ZL201210452101.3 alkaline microelectrolysis material 160,000kg (without ceramsite ), then inject H 2 O 2 30000kg, one day later, the odor of the river in the middle section of the hard bottom is ...

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Abstract

The invention discloses a method for treating black and odorous water body and bottom mud thereof. The method comprises the following steps that 1, a microelectrolysis material is added to the bottom mud of the black and odorous water body, and the microelectrolysis material is mixed with the black and odorous water body bottom mud, wherein the dosage of the microelectrolysis material is 0.1%-5% of the weight of the bottom mud of the black and odorous water body; 2, an oxidant is injected into or sprayed in the black and odorous water body bottom mud with the microelectrolysis material, wherein the dosage of the oxidant is 0.1%-1% of the weight of the black and odorous water body. By means of the method for treating the black and odorous water body and the bottom mud thereof, desulphuration and denitrification of the bottom mud can be achieved, the situation that the bottom mud is converted into a facultative state from an anaerobic state is facilitated, black-odor of the water body can be eliminated rapidly, and the water body self-purification function is restored. The method for treating the black and odorous water body and the bottom mud thereof is suitable for comprehensive treatment of the black and odorous water body and a river channel.

Description

Technical field [0001] The present invention relates to a method for treating black and odorous water body bottom sludge. Specifically, the present invention relates to a method of using micro-electrolysis material and oxidizing agent to oxidize, to treat black and odorous rivers (swells) and lakes with organic pollution. Background technique [0002] Due to the large accumulation of organic pollutants and ammonia nitrogen in the bottom sludge, anaerobic decomposition produces H 2 The odor of sulfide such as S and the release of ammonia nitrogen make the water body eutrophication, leading to the production of a large number of black and odorous inland rivers (gushes) and landscape lakes in our cities, which urgently need to be treated. [0003] For the treatment of this kind of black and smelly water bodies, currently the main methods are to intercept or transfer sewage, and then use methods such as dredging, planting aquatic plants, changing water, adding microbial agents, and addi...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/06
CPCC02F11/006C02F11/06
Inventor 魏焕曹魏旭
Owner 广东灵捷制造化工有限公司
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