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Device and method for deep water distribution multi-media ecological wetland sewage treatment system

A sewage treatment system and ecological wetland technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problems of restricting wide application, difficult to operate all year round, low hydraulic load, etc. To achieve the effect of increasing the fixed quantity, long-term efficient operation without clogging, and preventing filter layer clogging

Active Publication Date: 2012-02-22
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional constructed wetland sewage treatment technology has technical problems such as low hydraulic load, easy blockage and difficulty in operating all year round, which limits its wide application in domestic sewage treatment in the vast rural areas of our country.

Method used

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  • Device and method for deep water distribution multi-media ecological wetland sewage treatment system
  • Device and method for deep water distribution multi-media ecological wetland sewage treatment system
  • Device and method for deep water distribution multi-media ecological wetland sewage treatment system

Examples

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Effect test

Embodiment 1

[0016] The device of the deep water distribution multi-media ecological wetland sewage treatment system of the present invention: the device is placed in a rectangular pool excavated on the ground, and consists of a water distribution pipe 1, a water collection pipe 2, wetland plants 3, a breathable substrate layer 4, and a water distribution pipe. Layer 5, multi-media ecological filter layer 6, water collection layer 7 and anti-seepage layer 8; the water distribution pipe 1 is located in the water distribution layer 5, and the branch pipes on both sides of the main pipe are used to distribute water evenly, and each branch pipe is perforated and wrapped around A thin layer of porous polyurethane material, the water distribution layer 5 is located above the ecological filter layer 6; the air-permeable layer 4 is filled with native media, on which wetland plants 3 are planted; the multi-media ecological filter layer 6 is placed between the water distribution layer 5 and the water ...

Embodiment 2

[0019] The multi-media ecological wetland system device is 10×4×1.7m in length×width×height, vertical flow, the water collection pipe is 160cm away from the surface, the air-permeable layer is 30cm filled with gravel and the original medium ratio is 1:5, and the water distribution layer is 20cm filled with particle size 10cm, multi-media ecological filter layer 100cm, composed of 6 layers of 10cm-thick multi-media filter material modules and 7 layers of 5cm-thick water flow channels, the water collection layer is 20cm filled with gravel with a particle size of 10cm, the water distribution pipe is 50cm from the ground, and cannas are planted on the surface. At hydraulic load 250L / m 2 In case d, influent COD 150mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 4mg / L, effluent COD 30mg / L, NH 3 -N 4mg / L, TN 7mg / L, TP 0.25mg / L, the removal rate is 80% of COD, NH 3 -N 80%, TN 77%, TP 94%.

Embodiment 3

[0021] The multi-media ecological wetland system device is 10×4×1.7m in length×width×height, vertical flow, the water collection pipe is 160cm away from the surface, the air-permeable layer is 30cm filled with gravel and the original medium ratio is 1:5, and the water distribution layer is 20cm filled with particle size 10cm, multi-media ecological filter layer 100cm, composed of 6 layers of 10cm-thick multi-media filter material modules and 7 layers of 5cm-thick water flow channels, the water collection layer is 20cm filled with gravel with a particle size of 10cm, the water distribution pipe is 50cm from the ground, and cannas are planted on the surface. At hydraulic load 450L / m 2 In case d, influent COD 150mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 4mg / L, effluent COD 44mg / L, NH 3 -N4.4mg / L, TN 9.3mg / L, TP 0.4mg / L, removal rates are COD71%, NH 3 -N78%, TN 69%, TP 90%.

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Abstract

The invention relates to a device and a method for a deep water distribution multi-medium ecological wetland sewage treatment system. The device consists of a water distribution pipe, a water collection pipe, wetland plants, a venting substrate layer, a multi-medium ecological filter layer, a water collection layer and an impervious layer which are arranged in a rectangular pond body dug in the ground; and the detailed structure and the method are shown in an instruction book. The device and the method have the advantages that the device can distribute water by 50 to 100cm below ground, thereby facilitating the operation of the device in northern cold areas in all seasons, increasing fixed quality of microorganisms and deeply removing phosphorus and nitrogen, prolonging hydraulic retention time, avoiding blocking of the filter layer, and ensuring the highly efficient operation of the wetland system for a long time, having extremely high efficiency of removing COD, ammonia nitrogen, total nitrogen and total phosphorus, and being operated under conditions of no power or micro power, and growing wetland plants such as canna, iris and the like, effectively removing nitrogen-phosphorus while beautifying the environment, not generating mosquitoes and undesirable odor, and being suitable for the deep treatment and the resource utilization of the domestic sewage in small towns and rural areas.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a device and a method for a deep water distribution multi-media ecological wetland sewage treatment system. Background technique [0002] Constructed wetland sewage treatment technology is through the biological, chemical and physical actions of plants and media, so that organic matter in sewage can be degraded, inorganic salts can be fixed, and nutrients such as nitrogen and phosphorus can be utilized as resources. With the advantages of convenient management and low operating costs, it is a sewage ecological treatment technology with potential application in vast rural areas. However, the traditional constructed wetland sewage treatment technology has technical problems such as low hydraulic load, easy clogging and difficulty in operating all year round, which limits its wide application in domestic sewage treatment in vast rural areas of our country. Therefore, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 籍国东
Owner PEKING UNIV
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