Multiple-component filler matrix undercurrent wet land purifying and processing apparatus and undercurrent wet land purifying method

A purification treatment and subsurface flow wetland technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of decreased purification treatment effect, weakened aerobic microbial action, slow microbial recovery process in spring, etc. , to achieve the effect of not easily producing odor and mosquitoes, improving the effect of purification treatment, and increasing the effect of phosphorus removal

Inactive Publication Date: 2007-08-01
TIANJIN WATER CONSERVANCY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many defects and deficiencies. Plants and microorganisms in subsurface wetlands are greatly affected by climate, especially in the improvement of water environment in northern cities. Due to the impact of winter freezing period, the wetland system cannot operate due to the freezing of aquifer layers; subsurface wetlands The microorganisms in the wetland rely on the natural formation during the operation process, and high-efficiency microbial bacteria cannot be added artificially, and the role of microbial degradation in subsurface wetlands cannot be fully exerted, especially the treatment effect in the early stage of wetland construction is poor, and the recovery process of microorganisms in spring is slow.
Under the low dissolved oxygen content inside the subsurface wetland, the aerobic microbial action in the surface aerobic zone is weakened, the water quality of the effluent is poor, and the dissolved oxygen concentration of the effluent is low, which is

Method used

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  • Multiple-component filler matrix undercurrent wet land purifying and processing apparatus and undercurrent wet land purifying method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0076] The wetland purification treatment pool (10) is in the shape of a cubic box as a whole, and the wetland purification treatment pool (10) is evenly filled with a filling matrix layer (14), and the pool wall of the wetland purification treatment pool (10) is higher than the upper surface of the filling matrix layer (14). On the surface, the upper end of the wetland purification treatment pool (10) is below the ground surface, and the water body always runs in the wetland purification treatment pool (10) under the ground surface.

[0077] Amphibious plants (9) are planted on the top of the filling matrix layer (14), the roots of the plants (9) are embedded in the filling matrix layer (14), the filling matrix layer (14) fixes the roots of the plants (9), and the filling matrix The layer (14) is a coarse particle size layer (6), a high-efficiency dephosphorization layer (7) and a medium particle size layer (8). Different permeability coefficients form a wave-like water flow ...

Embodiment 3

[0082] The cross-sectional area of ​​the wetland purification treatment pool (10) is rectangular, trapezoidal, circular, semicircular, polygonal, or irregular polygonal, at least one of which is used, as shown in Figures 1 and 2.

[0083] Implement inverted 4

[0084] The filling matrix (14) filled in the wetland purification treatment tank (10) is a coarse-grained layer (6), a high-efficiency dephosphorization layer (7) and a medium-grained layer (8), and the coarse-grained layer (6) is gravel , gravel, ceramsite, volcanic basalt, large particle size, smooth surface, small water flow resistance, particle size 40-60mm, use at least one kind, porosity 35-45%, permeability coefficient 50-60cm / s , dry bulk density 1.6-1.8g / cm 3 , accounting for 5-20 of the total filler volume, as shown in Figure 1 and Figure 2.

Embodiment 5

[0086] The medium particle size layer (8) is gravel, crushed stone, ceramsite, volcanic basalt, medium particle size, large specific surface area, easy to form microbial film, particle size is 20-40mm, at least one type is used, and the porosity is 45- 55%, permeability coefficient 20-40cm / s, dry bulk density 1.5-1.7g / cm 3 , accounting for 20-60 of the total filler volume, as shown in Figure 1 and Figure 2.

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Abstract

The invention discloses a purifying equipment and method of multi-component fill base underflow wetland, which is characterized by the following: the purifying pond displays cubic box with baffle in the middle to separate pond into upgoing pond and descending pond; the fill is filled with pond, which is rough grain size layer, high-effective dephosphorization layer and middle grain size layer to fill upgoing pond and descending pond alternatively; the filling course forms the composition of diafiltrating material with different grain sizes and diafiltrating coffeciency, which produces wave flow-running shape to proceed anaerobic and consumptive procedure reciprocally in the effluent purifying course.

Description

technical field [0001] The invention relates to an underflow wetland purification treatment equipment, in particular to a multi-component filler matrix underflow wetland purification treatment equipment and an underflow wetland purification method. Background technique [0002] Since the 1970s, water treatment technology of constructed wetlands has attracted people's attention. It has the advantages of low investment and low energy consumption, and has become a research hotspot in water environment technology. Subsurface flow wetland is a new technology of artificial wetland sewage treatment, which is an artificially constructed, controllable and engineered wetland system. [0003] Currently, existing subsurface wetlands include three key components: plants, microorganisms, and substrates. Fillers with different particle sizes are artificially constructed to form a bed for the matrix. Water-resistant plants with high decontamination efficiency are planted on the surface of ...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/32C02F3/30
CPCY02W10/10
Inventor 刘学功李金中江浩杨玉刚
Owner TIANJIN WATER CONSERVANCY INST
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