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Basket type artificial wetland for treating decentralized rural domestic wastewater

A technology for domestic sewage and constructed wetlands, which can be used in sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., and can solve problems such as clogging of wetland surfaces, obstruction of oxygen transfer, and odor generation. Achieve the effect of reducing difficulty and cost, improving reoxygenation capacity, and reducing construction difficulty

Inactive Publication Date: 2015-05-20
TONGJI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the constructed wetland technology is more convenient for follow-up maintenance than the traditional sewage treatment technology, the follow-up maintenance of the constructed wetland cannot be carried out well in rural areas where the awareness of environmental protection is relatively weak and management personnel are relatively scarce.
One of the biggest problems faced by traditional constructed wetland technology is clogging
After the wetland has been in operation for a period of time, the inorganic suspended solids carried in the sewage can directly cause blockage on the surface of the wetland, and the organic matter in the sewage will cause the rapid growth of biofilm in the wetland, which also causes blockage
When the blockage occurs, the water flowing through the wetland will be short-flowed, the transfer of oxygen in the system will be hindered, the processing capacity of the system will drop rapidly, and odor will also be generated.

Method used

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  • Basket type artificial wetland for treating decentralized rural domestic wastewater
  • Basket type artificial wetland for treating decentralized rural domestic wastewater
  • Basket type artificial wetland for treating decentralized rural domestic wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0028] The basket-type constructed wetland treats distributed rural domestic sewage, and the service object is three households, and the treated water volume Q3 -Nfigure 1shown. A basic basket layer consisting of basic baskets 10 is laid on the wet ground floor. One or a combination of melon seeds, gravel, zeolite, fly ash, blast furnace slag, and steel slag is placed in the basic basket 10, with a particle size of 3-30mm. Two water distribution pipes 5 are set on the upper layer of the wetland, which are respectively placed in the water distribution basket 4. In order to ensure the uniformity of water distribution, the water distribution basket 4 and the surface plant basket 3 are filled with coarse sand with a mass ratio of 1:1. and cultivated soil. And at the position of 1 / 2 the height of the cloth water basket 4, set a perforated sleeve with a hole diameter of 5-20mm, and arrange it at an angle of 0-90o to the vertical downward, with a distance of 50-500mm on the same side...

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Abstract

The invention belongs to the technical field of environmental protection and specifically relates to a basket type artificial wetland for treating decentralized rural domestic wastewater. According to the basket type artificial wetland, a traditional artificial wetland is divided into different functional zones, such as a water distribution zone, a plant zone and an ozone zone. The partition of the functional zones is realized by use of lots of baskets. As a result, construction, surface substrate replacement and wetland system aeration can be performed conveniently, and furthermore, the processing capability of the wetland can be improved and the subsequent maintenance of the wetland can be realized conveniently.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a basket-type artificial wetland for treating distributed rural domestic sewage. Background technique [0002] With the continuous development of our country's social economy, the discharge of domestic sewage is also increasing day by day. In recent years, the treatment rate of urban domestic sewage has been increasing rapidly, but the situation of rural sewage treatment is not optimistic. Due to the weak economic foundation in rural areas, social development is relatively lagging behind, and rural sewage is different from urban domestic sewage. It is relatively easy to collect, and it has The high dispersion and other characteristics have led to the low rate of rural sewage treatment and unsound treatment facilities. It is imminent to find a method suitable for treating rural sewage. [0003] Constructed Wetlands is a sewage treatment technology de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/30
CPCY02W10/10
Inventor 李怀正汪健徐祖信金伟张杰
Owner TONGJI UNIV
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