Device of multi-medium subsurface infiltration rural sewage disposal system and method thereof

A sewage treatment system and underground infiltration technology, applied in the direction of osmosis/dialysis water/sewage treatment, etc., to achieve the effect of increasing hydraulic load rate, enhancing chromatographic separation effect, and preventing easy clogging

Inactive Publication Date: 2010-10-27
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing underground infiltration sewage treatment technology still has problems such as easy clogging, which limits its wide application in rural domestic sewage treatment in my country

Method used

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  • Device of multi-medium subsurface infiltration rural sewage disposal system and method thereof
  • Device of multi-medium subsurface infiltration rural sewage disposal system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The device of the multi-media underground infiltration rural sewage treatment system of the present invention: excavate a trapezoidal pool body on the ground, dig a triangular slope surface at the bottom of the pool body, lay anti-seepage cloth on the bottom and around it, and set a water distribution pipe at the front end of the pool body. A water collecting pipe is arranged at the tail of the body.

[0020] The device is composed of air-permeable layer 1, capillary infiltration layer 2, water-permeable layer 3, multi-media ecological module layer 4, water distribution tank 5, water collection layer 6, anti-seepage layer 7 and polyurethane filter screen 8; air-permeable layer 1 is placed in capillary infiltration Above the layer 2; the water collection layer 6 is located on the top of the anti-seepage layer 7, and the multi-media ecological module layer 4 is connected to the water collection layer; the water distribution tank 5 is placed inside the water permeable layer...

Embodiment 2

[0022] The sewage is introduced into the water distribution tank 5 through the water distribution pipe. Under the action of the capillary, the sewage in the water distribution tank 5 is filtered by the polyurethane filter 8 and then lifted to the capillary infiltration layer 2 and the air-permeable layer 1 in turn. The pollutants are initially separated under the action of the chromatographic effect. After the water rises to a certain height, gravity makes it fall again, and enters the multi-media module layer 4 through the water-permeable layer 3 to be deeply purified. The purified water is collected by the water-collecting layer 6 and discharged or resource utilization.

[0023] The device height of the multi-media underground infiltration rural sewage treatment system is 1.7m, the air-permeable layer is 30cm, the capillary infiltration layer is 30cm, the water-permeable layer is 20cm, the multi-media module layer is 60cm, and the water collection layer is 30cm. The particle ...

Embodiment 3

[0025] The method is the same as in Example 2; the device of the multi-media underground infiltration rural sewage treatment system is 1.7m high, the air-permeable layer is 30cm, the capillary infiltration layer is 30cm, the water-permeable layer is 20cm, the multi-media module layer is 60cm, and the water collection layer is 30cm. The particle size of the multi-media functional filter material is 8mm, and a total of 6 layers are filled. The volume ratio of the permeable material gravel: modified zeolite: ash is 80:10:10, and a total of 5 layers are filled. Under hydraulic load 15cm / m 2 In case d, influent COD 200mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 5mg / L, effluent COD 28mg / L, NH 3 -N 1.8mg / L, TN 4.3mg / L, TP 0.22mg / L, the removal rate is 86% of COD, NH 3 -N 91%, TN 86%, TP 96%.

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Abstract

The invention relates to a device and a method of a multi-medium subsurface infiltration village sewage treatment system. The device consists of a breathable layer, a capillary tube infiltration layer, a permeable layer, a multi-medium module layer, a water distribution tank, a water collection layer, an impervious layer and a polyurethane sieve. The details on the structure and the method are defined in the description. The device and the method have the advantages that: the water distribution by capillary tubes strengthens the chromatographic separation effect; and the introduction of a multi-medium ecological filtering layer into a gravity filtration state solves a easy blockage problem while reducing land occupation and improving hydraulic load. Under conditions of micro-power and a hydraulic load of 15 to 25cm / m<2>d, the multi-medium subsurface infiltration system can remove 85 to 95 percent of COD, 90 to 98 percent of NH3-N and 90 to 99 percent of TP, thereby realizing deep treatment of village domestic sewage and recycling.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a device and method for a multi-media underground infiltration rural sewage treatment system. [0002] Background technique [0003] Underground infiltration sewage treatment technology uses the biological, chemical and physical effects of the infiltration medium to degrade the organic matter in the sewage, fix the inorganic salts, and utilize nutrients such as nitrogen and phosphorus as resources. It has deep phosphorus and nitrogen removal, With the advantages of convenient operation and management and low operating costs, it is a sewage ecological treatment technology with application potential. Therefore, the technology of underground sewage infiltration and reclaimed water reuse has been developed successively (Patent No. 96115446.2), the method and system for strengthening water-distributing underground infiltration sewage treatment (Patent No. 02130946.9), and the strengthe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44
Inventor 籍国东郭丰周游李仰斌谢崇宝张国华
Owner PEKING UNIV
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