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Active-matrix-reinforced underflow constructed wetland device

A technology of active matrix and subsurface flow wetland, which is applied in chemical instruments and methods, aerobic and anaerobic process treatment, sustainable biological treatment, etc., can solve the problem of no aerobic state, limited phosphorus removal effect, and blockage of flocculated sediment To achieve the effect of vigorous biological activity and vitality, prevent the decline of sewage treatment performance, and improve the efficiency of pollutant treatment

Inactive Publication Date: 2011-09-07
SHANGHAI JIAO TONG UNIV
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AI Technical Summary

Problems solved by technology

The disadvantages of this technology are: 1) there is no active matrix for adsorbing nitrogen in the filled matrix layer, and a high-concentration zone of nitrogen cannot be formed, so the nitrogen removal rate is slow; 2) although the coarse-grained layer with high permeability coefficient is easy to form aerobic environment, and the medium particle size layer with low permeability coefficient is easy to form an anaerobic environment, but because there is no artificial oxygen supply, the coarse particle size layer behind the medium particle size layer will not actually show a good aerobic state ; 3) The matrix layers of different particle sizes and materials are filled in layers and the filling methods of different shapes (trapezoidal and inverted trapezoidal) are used to bring inconvenience to the construction and maintenance after construction; 4) Although the high-efficiency dephosphorization layer is kneaded, the Relying on the rich iron and aluminum ions contained in it to promote the formation of flocculation and precipitation of phosphorus in sewage, the flocculation and precipitation will soon cause clogging as the operation time goes by
Moreover, the formation of flocculation precipitation requires a high concentration of reactants. If the concentration of phosphorus in sewage is low, but it still pollutes the environment, the effect of phosphorus removal is bound to be limited.

Method used

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  • Active-matrix-reinforced underflow constructed wetland device
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Embodiment Construction

[0019] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0020] Such as figure 1 As shown, the device in this embodiment includes: a wetland tank 1 and a water drop aeration step 2, wherein: the front end of the wetland tank 1 is provided with an opening as the water inlet 3, and the rear end of the wetland tank is provided with an opening as the water outlet 4, and the water drop The upper end of the aeration step 2 is connected with the water outlet 4 of the wetland tank.

[0021] The wetland tank 1 has undergone anti-seepage treatment, including: an inflow regulating tank 5, a filter grid 6, a soil layer 7, a plant layer 8, a net layer 9, an aerobic deammonization an...

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Abstract

The invention provides an active-matrix-reinforced sub-surface flow constructed wetland device and belongs to the technical field of environmental protection. The device comprises a wetland groove and a water-drop aeration step, wherein an opening which is arranged at the front end of the wetland groove is used as a water inlet, an opening which is arranged at the rear end of the wetland groove is used as a water outlet, and the upper end of the water-drop aeration step is connected with the water outlet of the wetland groove. Different pollutant purification functional regions are arranged in the device by segments, and different segments are filled with different active matrixes and equipped with corresponding process conditions so as to comprehensively and greatly improve the efficiency of treating pollutants in slightly-polluted water.

Description

technical field [0001] The invention relates to a device in the technical field of environmental protection, in particular to an active matrix reinforced artificial subsurface flow wetland device. Background technique [0002] With the continuous and rapid development of our country's social economy, the environmental problems are becoming more and more serious. The protection of water environment and the safety of drinking water sources are already a very urgent task in our country. In this context, the environmental protection department currently requires sewage treatment plants in various places to be upgraded to the first-class A standard, so that the treated tail water can be discharged into non-closed water bodies, such as the Yangtze River. However, even if the tail water reaches the first grade A standard, it is still inferior to the fifth grade water quality according to the national surface water standard, which will cause eutrophication of closed water bodies. I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/30
CPCY02W10/10
Inventor 李春杰吴德意
Owner SHANGHAI JIAO TONG UNIV
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