Analysis of the Effect of Constructed Wetland on Domestic Wastewater

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3 Analysis of the effect of constructed wetland treatment of domestic sewage

As a waste water ecological treatment technology with low investment, low energy consumption, low treatment cost and denitrification and phosphorus removal function, constructed wetland has gradually been accepted by many countries in the world, and is widely used in the treatment of domestic sewage, secondary effluent of municipal sewage plants and Wastewater from agriculture and aquaculture
.

The Southeastern Environmental Science Research Institute undertook the construction of China's first practical constructed wetland sewage treatment plant in Bainikeng, Shenzhen, to treat domestic sewage and industrial wastewater from surrounding villages and towns
.
In the design of the Wanghai Lion City Ecological Community in Haikou City, Hainan Province, constructed wetlands were used to treat the effluent from the biogas tank and reuse it for toilet flushing.

Domestic sewage is a kind of wastewater with good biodegradability, which is conducive to biological effects in constructed wetlands
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It can be seen that the effluent quality of the constructed wetland fully meets the requirements of the "Urban Miscellaneous Water Quality Standard"

Table 8-7 Operation results of wetland projects in my country

In addition, a large number of pilot project data show that constructed wetlands have good treatment effects on domestic sewage, aquaculture wastewater, and storm runoff
.

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Under the premise of environmental protection and sustainable development, constructed wetland is a comprehensive ecological system, which can give full play to the regeneration potential of resources, prevent re-pollution of the environment, and obtain the best benefits of sewage treatment and resource utilization.
It is a good ecological system.
The wastewater treatment method is more suitable for the treatment of urban sewage and relatively dispersed sewage with small amount of water and low management level
.

In our country, due to the traditional secondary activated sludge treatment process, its engineering investment is high, energy consumption is high, operation and management requirements are high, and the problem of increasing wastewater discharge is becoming more and more serious.
Small and medium cities and towns are unable to spend too much money.
For the construction and operation of sewage treatment plants
.
As a natural "sewage treatment plant", constructed wetland has greater economic and environmental benefits for developing countries