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Underground water advection percolation system used for town sewage treatment

A technology of sewage treatment and horizontal flow, applied in the treatment of polluted groundwater/leachate, multi-stage treatment of water/sewage, water/sludge/sewage treatment, etc. Unevenness and other problems to achieve the effect of reducing floor space, improving sewage treatment performance, and increasing sewage treatment load

Inactive Publication Date: 2013-03-13
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional soil infiltration system has complex water distribution methods, uneven water distribution, poor matrix permeability, low treatment load, and large footprint

Method used

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  • Underground water advection percolation system used for town sewage treatment
  • Underground water advection percolation system used for town sewage treatment

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Embodiment 1

[0029] see figure 1 and 2 , a new type of underground horizontal flow infiltration system for sewage treatment in villages and towns, mainly including water distribution area 1, packing bed 2, water distribution baffle 3, aeration pipe 4, water collection area 5, anti-seepage layer 6, geotextile Interlayer 7, surface planting soil layer 8 and plant 9. Its overall structure is a strip-shaped groove bed structure. The water distribution area 1 and the water collection area 5 are respectively located at both ends of the packing bed 2. The bottom and surrounding areas of the packing bed 2 are provided with an anti-seepage layer 6. Divided into several units, the lower part of the filler is provided with an aeration tube 4, and the upper part of the filler bed is provided with several layers of geotextile interlayers 7, and the upper part of the interlayer is a surface planting soil layer 8, which can plant various crops 9.

[0030] see figure 1 and 2 , the water distribution...

Embodiment 2

[0035] In this embodiment, the size of the underground horizontal flow infiltration system is 20 meters long and 5 meters wide, wherein the filling width of the fine sand filter layer 1-1 in the water distribution area 1 is 0.3m, and the fine sand particle size is 0.5-2mm. The water pipe 1-2 and the water collection pipe 5-1 are made of PVC pipes with a diameter of 32mm; the packing bed 2 is divided into 4 compartments by the water distribution baffle 3, and the first 1 / 3 of the first compartment is filled with a particle size of 0.5~ 2cm crushed stone 2-1, the rest is filled with river sand and blast furnace slag mixed filler 2-2 with a volume ratio of 10:60, the particle size is 0.1~2cm; the material of the water distribution baffle 3 is hard PVC half, the thickness is 15mm, and the opening The hole diameter is 3mm, the opening density of the lower half of the water distribution baffle is 5 per square meter, and the upper part is 25 per square meter; the other compartments ar...

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Abstract

The invention relates to an underground water advection percolation system used for town sewage treatment, concretely comprising a water distribution region, a filler bed, water distribution baffles, aerator pipes, a water collecting region, impermeable layers, geotechnical cloth interlayers, a surface planting soil layer and plants. The whole of the system provided by the invention is of a strip-shaped groove bed body structure, the water distribution region and the water collecting region are respectively arranged at the two ends of the filler bed body, the water distribution baffles divide the filler bed into a plurality of compartment units, aerator pipes are arranged at the lower part of filler in each odd number compartment, aeration rate can be regulated, the impermeable layers are arranged at the bottom of the filler bed and the periphery of the filler bed, a plurality of geotechnical cloth interlayers are paved at the upper part of the filler bed, the surface planting soil layer is arranged at the upper part of each interlayer, and crops can be planted. According to the system provided by the invention, multi-stage water distribution baffle design is adopted, so that contact uniformity of sewage and filler is effectively improved; biomass carbon modified filler substrate is adopted, and soil layers are planted, so that sewage purification performance is enhanced; and alternate filler bed aerator design is adopted, so that a multi-stage aerobic n / anoxia m alternate mode is presented in a filler bed body, and total nitrogen removal effect of the system provided by the invention is improved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and is a novel underground horizontal flow infiltration system used for sewage treatment in villages and towns. Background technique [0002] For a long time, due to reasons such as economics and environmental awareness, the treatment of domestic sewage has been concentrated in densely populated urban areas where the sewage collection pipe network can be collected. However, in most villages and towns, sewage generally passes through simple small three-compartment septic tanks. After treatment, it is directly discharged into the river, causing serious pollution to the water environment and affecting human health and economic development. Most of the domestic sewage in villages and towns in my country is scattered, the collection system is very incomplete, and the economic strength and management level are not high enough. Therefore, it is necessary to develop high-efficiency and low-consu...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/06
Inventor 王学江颜湘波杨连珍卜云杰吴真王伟王鑫赵建夫
Owner TONGJI UNIV
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