Modular system for purification of polluted river water body and application of the same

A water purification and modular technology, applied in the field of water environment pollution control, can solve the problems of limited technology application, low technology integration, slow effect of purifying water quality and improving habitat, etc., achieving good results and reducing pollution loads. Effect

Inactive Publication Date: 2011-10-19
NANJING UNIV
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Problems solved by technology

[0006] However, most of the above methods use ecological floating beds, and the process of purifying river water quality is often limited with the death of floating plants when the temperature drops in autumn and winter, thus limiting the application of ecological floating beds.
In addition, most of the above-mentio...

Method used

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  • Modular system for purification of polluted river water body and application of the same
  • Modular system for purification of polluted river water body and application of the same
  • Modular system for purification of polluted river water body and application of the same

Examples

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Embodiment 1

[0032]Taking the Hongqi River in Wujingang, southern Jiangsu as an example, the experimental study was carried out. The river flows east into Wujingang, with a total length of 1.68km, an average river width of 16m, an average river depth of 1.68m, and a bottom sediment depth of 0.16m. The water flow is slow. The river passes through Machi Village and Tianjing Village, with a catchment area of ​​about 1944 mu, including about 702 mu of cultivated land. Around the Hongqi River, there are rural domestic sewage discharge, farmland tail water and enterprise sewage discharge, and the water body has relatively high turbidity. The monitoring shows that the total nitrogen and total phosphorus of the Hongqi River are mainly exceeding the standard, and the water quality of the river is generally inferior to Class V. The length of the experimental river is about 1,000 meters. In the river, the modular technology of purifying polluted river water is used to construct the river purification...

Embodiment 2

[0035] Taking a certain river course in northern Jiangsu as an example, the river has a total length of 10.6km, an average width of 13m, an average depth of 2.15m, a bottom mud thickness of 0.23m, and slow water flow. The catchment area of ​​the river is about 2541 mu. Around the river, there are rural domestic sewage discharges, farmland irrigation water, and enterprise pollution treatment tail water. The water body has relatively high turbidity. The main pollutants in the river water are total nitrogen, total phosphorus, and organic matter exceeding the standard. The river water quality is generally inferior to Class V. The length of the experimental river is about 1,000 meters. In the river, the modular technology of purifying polluted river water is used to construct the river purification system. The biological grid module, elastic packing adsorption bed module, microbial ecological decomposition bed module and submerged plant ecological purification are arranged in sequen...

Embodiment 3

[0037] Taking a river in Huaibei as an example, the river has a total length of 12.4km, an average width of 16m, an average depth of 2.45m, a bottom mud thickness of 0.34m, and slow water flow. The catchment area of ​​the river is about 3564 mu. Around the river, there are enterprises polluting tail water, rural domestic sewage discharge, and farmland irrigation water. The river is black and smelly, with high content of organic pollutants and low dissolved oxygen. The length of the experimental river is about 1300 meters. When the project started, because the water body was black and smelly, it was difficult for submerged plants to survive. In view of this situation, the river purification system was constructed by using the modular technology of polluted river water purification in the river, and biological Grille module, microbial ecological decomposition bed module, elastic packing adsorption bed module, submerged plant ecological purification hanging bed module, the length...

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Abstract

The invention belongs to the technical field of treatment of environment pollution, and more specifically relates to a modular system for purification of a polluted river water body and application of the same. The modular system mainly comprises a biological grating module, an elastic filling material adsorption bed module, a microbial ecological decomposition suspending bed module and a sunken plant ecological purification suspending bed module. The biological grating module is composed of a framework, sunken plants, floating plants and emerged plants; the elastic filling material module consists of a framework structure, hydrophilic elastic filling materials and hydrophobic elastic filling materials; the microbial bed module comprises a framework structure, a micropore aeration mechanism and microbes; and the sunken plant purification bed module is composed of the species group of sunken plants and a bed body. According to the invention, the position of the polluted river water purification modules in a water body can be adjusted according to pollution degrees of the water body; the modular system can effectively purify water quality of a polluted river water body and a black and odorous river water body and reduce river pollution load; therefore, the invention is of significance for purification of river water bodies.

Description

technical field [0001] The invention belongs to the technical field of water environment pollution control, and in particular relates to a modular system for purifying polluted river water and its application. Background technique [0002] With the continuous development of our country's society and economy and the acceleration of urbanization, more and more industrial wastewater and domestic sewage are discharged into rivers, resulting in a continuous decline in river water quality. According to the 2008 China Environmental Status Bulletin, among 408 surface water monitoring sections of 203 rivers across the country, 57.3%, 24.3% and 18.4% had water quality of Grade I-III, Grade IV-V and worse than Grade V respectively. The main pollution indicators are permanganate index, five-day biochemical oxygen demand and ammonia nitrogen. Among them, the Huaihe River was slightly polluted, the Yellow River and Liaohe River were moderately polluted, and the Haihe River was severely p...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/28
Inventor 李正魁潘静赟
Owner NANJING UNIV
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