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Device of deep layer water distribution multi-medium ecological wetland sewage disposal system and method thereof

A sewage treatment system and ecological wetland technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve problems such as difficulty in year-round operation, limited wide application, low hydraulic load, etc. Achieve long-term high-efficiency operation without clogging, increase the fixed quantity, and prevent the filter layer from clogging

Active Publication Date: 2009-06-17
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 of deep layer water distribution multi-medium ecological wetland sewage disposal system and method thereof
  • Device of deep layer water distribution multi-medium ecological wetland sewage disposal system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The device for the deep-seated water distribution multi-medium ecological wetland sewage treatment system of the present invention: the installation is placed in a rectangular pool excavated on the ground, consisting of a water distribution pipe 1, a water collection pipe 2, a wetland plant 3, a breathable matrix layer 4, and a water distribution 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, using branch pipes on both sides of the main pipe to distribute water evenly, and each branch pipe is perforated and wrapped Thin-layer porous polyurethane material, the water distribution layer 5 is located above the ecological filter layer 6; the breathable layer 4 is filled with native media, and wetland plants 3 are planted on it; the multi-medium ecological filter layer 6 is placed on the water distribution layer 5 and the water collection layer 7 In betw...

Embodiment 2

[0019] Multi-media ecological wetland system device length×width×height is 10×4×1.7m, vertical flow pattern, water collection pipe is 160cm away from the ground, 30cm permeable layer filled with gravel and primary medium ratio is 1:5, water distribution layer 20cm fill size 10cm, the multi-media ecological filter layer is 100cm, composed of 6 layers of 10cm thick multi-media filter 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 pipe is 50cm away from the ground, and canna is planted on the surface. 250L / m in hydraulic load 2 In case of d, influent COD 150mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 4mg / L, effluent COD 30mg / L, NH 3 -N4mg / L, TN 7mg / L, TP 0.25mg / L, removal rates of COD 80%, NH 3 -N 80%, TN 77%, TP 94%.

Embodiment 3

[0021] Multi-media ecological wetland system device length×width×height is 10×4×1.7m, vertical flow pattern, water collection pipe is 160cm away from the ground, 30cm permeable layer filled with gravel and primary medium ratio is 1:5, water distribution layer 20cm fill size 10cm, the multi-media ecological filter layer is 100cm, composed of 6 layers of 10cm thick multi-media filter 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 pipe is 50cm away from the ground, and canna is planted on the surface. 450L / m in hydraulic load 2 In case of d, influent COD 150mg / L, NH 3 -N 20mg / L, TN 30mg / L, TP 4mg / L, effluent COD 44mg / L, NH 3 -N 4.4mg / L, TN 9.3mg / L, TP 0.4mg / L, the removal rates are respectively COD71%, NH 3 -N 78%, 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 specifically relates to a device and a method for a sewage treatment system for deep-seated multi-medium ecological wetland. Background technique [0002] Constructed wetland sewage treatment technology uses the biological, chemical and physical effects of plants and media to degrade the organic matter in the sewage, fix inorganic salts, and recycle nutrients such as nitrogen and phosphorus. It has deep dephosphorization and denitrification. It has the advantages of convenient management and low operating cost. It is a sewage ecological treatment technology with application potential 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 the treatment of domestic sewage in the vast rural areas of my country. Therefo...

Claims

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Application Information

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IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 籍国东
Owner PEKING UNIV
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