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Composite plant cover wetland sewage treatment system having comprehensive benefits

A sewage treatment system and comprehensive benefit technology, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. The effect of tall plants and low prices

Inactive Publication Date: 2008-07-23
BEIJING JINXIU DADI AGRI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the process of practical application, although the demand for domestic sewage purification technology is the most urgent in densely populated areas, the defect of large area of ​​constructed wetland often restricts its application. multi-purpose wetland

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Use the perennial underground roots of cattail, wild rice stem, water onion, and calamus according to the planting mode of ... cattail row ... wild rice stem row... cattail row... water onion row... cattail row... calamus row... cattail row... (row spacing 50cm, plant spacing 50cm) in the particle size A subsurface constructed wetland sewage purification system was built on a gravel matrix of about 5 cm, and its removal efficiency could reach COD during the period from September 13 to September 25, 2005 cr 0.788gm -2 d -1 , TN 0.066gm -2 d -1 , TP 0.245gm -2 d -1 .

Embodiment 2

[0025] Use the perennial underground roots of cattail, wild rice stem, water onion, and calamus according to the planting mode of ... cattail row ... wild rice stem row... cattail row... water onion row... cattail row... calamus row... cattail row... (row spacing 80cm, plant spacing 20cm) in the particle size A subsurface flow artificial wetland sewage purification system was built on a gravel matrix of about 3 cm. During the period from September 26 to October 9, 2005, its removal efficiency could reach COD cr 0.855gm -2 d -1 , TN 0.021gm -2 d -1 , TP 0.240gm -2 d -1 .

Embodiment 3

[0027] Use the perennial underground roots of cattail, wild rice stem, water onion, and calamus according to the planting mode of ... cattail row ... wild rice stem row... cattail row... water onion row... cattail row... calamus row... cattail row... (row spacing 50cm, plant spacing 40cm) in the particle size A subsurface constructed wetland sewage purification system was built on a gravel substrate of about 5 cm, and its removal efficiency could reach COD during the period from October 10 to October 23, 2005 cr 0.736gm -2 d -1 , TN 0.031gm -2 d -1 , TP 0.507gm -2 d -1 .

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Abstract

The invention relates to 'a compound vegetation wetland sewage treatment system that has comprehensive benefits' which belongs to the field of sewage treatment. The invention is characterized in that: the compound vegetation includes cattail, wild rice stem, water shallot, calamus (dominated by cattail). Two rows of the cattail are spaced by a row of wild rice stem, water shallot or calamus. The invention adopts the cattail, the wild rice stem, the water shallot and the calamus that are easy to be obtained and survive, low in cost and needs no care and gravel base to construct an undercurrent type artificial wetland system, which can not only purge the domestic sewage from urban and rural areas efficiently but also achieve a high overall benefit of compound vegetation and can enhance the landscape effect of the wetland, and develop the application in food, medicine and braiding product. The wetland system provided by the invention can keep a long-term and stable decontaminating effect and is characterized in that the purifying effect is prominent, the construction project is easy, the operation cost is low and the weed invasion is less, the landscape effect is good, the overall benefit is good and the development potential is large, which meets the practical conditions of the country and is suitable for being generalized in a large scale.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a compound vegetation wetland sewage treatment system with comprehensive benefits. Background technique [0002] Constructed wetlands are planted with wetland plants on a certain substrate (filler), which has a strong ability to degrade organic matter and nitrogen and phosphorus pollutants. Constructed wetlands use the triple complex and synergistic effects of the physical, chemical and biological systems of the substrate-microbe-plant complex to purify domestic sewage through filtration, sedimentation, ion exchange, plant uptake and microbial decomposition. As early as the beginning of the 20th century, Britain and the United States had precedents of using cattail (Typha angustifolia) swamps to treat sewage. [0003] At present, most studies on wetland plants are carried out around herbs, such as cattail (Typha sp.), reed (Phragmitessp.), water onion (Scirpus sp.), canna (Canna s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCY02W10/10
Inventor 靖德兵夏天翔姚力李燕斌金小静赵孟彬
Owner BEIJING JINXIU DADI AGRI CO LTD
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