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Method for restoring water body in black and stinking rivers

A water body restoration and river channel technology, applied in chemical instruments and methods, water resource protection, biological water/sewage treatment, etc. Cost, simple composition, no secondary pollution effect

Inactive Publication Date: 2012-07-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the rapid development of industry and agriculture in our country, the acceleration of urbanization and the low-level and extensive economic development model, the discharge of industrial wastewater and domestic sewage is increasing, and a large amount of nutrients continue to flow into rivers, which has caused adverse effects on many rivers. Black and odorous rivers have become a common pollution problem in small and medium-sized rivers in cities in my country. Black and odorous rivers have extremely serious impacts on the urban environment, not only affecting the appearance of the city, but also affecting the life and health of surrounding residents.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0009] Taking the black and odorous river course of a certain city as the research object, the water restoration experiment was carried out. Before water restoration, the contents of total nitrogen, total phosphorus and permanganate in the river water were determined to be 21.33mg / L, 2.56mg / L and 14.21mg / L respectively, and the concentration of dissolved oxygen was 0.3mg / L. The water quality of the water body is inferior to the V standard. Put 26% of bionic aquatic plants, 16% of microbial preparations, 6% of silver carp, 5% of river mussels, and 3% of earthworms in the bioaugmentation system. After a one-month biological domestication cycle, the pollutants in the river water are detected The water quality report shows that the contents of total nitrogen, total phosphorus, and permanganate are 1.41mg / L, 0.19mg / L, and 1.16mg / L, respectively. That is to say, after being treated by this method, the water body of the river channel reaches the IV standard, and while the water qual...

example 2

[0011] Taking the black and odorous river course of a certain city as the research object, the water restoration experiment was carried out. Before water restoration, the contents of total nitrogen, total phosphorus, ammonia nitrogen, permanganate and turbidity in river water were determined to be 19.91mg / L, 2.12mg / L, 17.93mg / L, 16.82mg / L, 33.86mg / L, the dissolved oxygen concentration is 0.3mg / L, and the water quality of this kind of water body is in the category V standard. Put 25% bionic aquatic plants, 22% microbial preparations, 6% silver carp, 6% river mussels, and 4% earthworms in the bioaugmentation system. After a one-month biological domestication cycle, detect the pollutants in the river water Concentration, the water quality report shows: the contents of total nitrogen, total phosphorus, ammonia nitrogen, permanganate, and turbidity are respectively 1.26mg / L, 0.23mg / L, 1.37mg / L, 1.68mg / L, 1.73mg / L L. That is to say, after being treated by this method, the water bo...

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Abstract

The invention provides a method for restoring water bodies in black and stinking rivers and relates to a method for eradicating the black and stinking problems of rivers and restoring the water bodies. According to the method, the water bodies of the black and stinking rivers are restored by utilizing an in-situ treatment manner based on a bionic water plant- microbe preparation-chub-clam-earthworm composite system and a biological oxygen-enriching technique. The method has obvious effect of removing nitrogen and phosphor nutrient salt and has a positive enhancement effect on the aquatic ecosystem of the river. The method is an effective method for restoring the water bodies in black and stinking rivers, and has the advantages of simpleness in component form, low cost, low operating expense, no secondary pollution and safety.

Description

technical field [0001] The invention relates to a method for repairing black and odorous river water bodies. Background technique [0002] With the continuous growth of the national economy, the continuous expansion of industrial scale, the continuous increase of urban population, the discharge of industrial wastewater and domestic sewage is increasing, and a large amount of pollutants flow into rivers and lakes without treatment, causing a large amount of water resources to be polluted. Rivers are important It is one of the fresh water resources in China, and it is also an important component of water sources. It is closely related to people's production, life and sustainable economic development. [0003] Rivers are rich in water, water conservancy and aquatic resources, and also have the functions of maintaining biodiversity, regulating climate, storing floods, regulating surface runoff, and ecologically restoring water quality. However, with the rapid development of in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02A20/402
Inventor 詹旭王婧希
Owner JIANGNAN UNIV
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