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Algae pond-constructed wetland-ecological pond environment-friendly treatment method for tail water of urban sewage treatment plants

An environment-friendly, constructed wetland technology, applied in the fields of water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of low investment and operation cost and discount on the recycling rate of urban tail water. , promotion and application restrictions and other issues to achieve the effect of improving the removal effect

Active Publication Date: 2019-08-06
自然资源部海岛研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, neither single process nor combined process can meet the requirements of low investment and operation cost and good treatment effect at the same time, which greatly reduces the recovery and utilization rate of urban tail water and limits the promotion and application.

Method used

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  • Algae pond-constructed wetland-ecological pond environment-friendly treatment method for tail water of urban sewage treatment plants
  • Algae pond-constructed wetland-ecological pond environment-friendly treatment method for tail water of urban sewage treatment plants
  • Algae pond-constructed wetland-ecological pond environment-friendly treatment method for tail water of urban sewage treatment plants

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Effect test

Embodiment 1

[0033] The scheme of this application is used to treat the tail water of the urban sewage treatment plant in a city river in East China: before the treatment, the concentration of the hydrophilic component of DON dissolved organic matter in the tail water is 0.32 mg / L, and the concentration of DON dissolved organic matter is 0.32 mg / L. The concentration of the hydrophobic component is 0.4mg / L, the concentration of the hydrophilic component of DOP dissolved organic matter is 0.026mg / L, the concentration of the hydrophobic component of DOP dissolved organic matter is 0.04mg / L, and the concentration of AOX is 0.85mg / L , the concentration of anilines is 0.43mg / L (AOX and anilines represent refractory organic pollutants in the tail water),

[0034] The above-mentioned tail water flows through the algae pond, the artificial wetland and the ecological pond in turn depending on the gravity of the water. Among them, there are water drop measures and switch valves between the algae pond ...

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Abstract

The invention belongs to the technical field of resource and environment protection, and in particular relates to an algae pond-constructed wetland-ecological pond environment-friendly treatment method for tail water of urban sewage treatment plants, the tail water of urban sewage treatment plants roughly flows through an algae pond, a constructed wetland and an ecological pond in sequence, and organisms in the algae pond comprise algae which can directly utilize hydrophilic components of dissolved organic matters in the tail water and bacteria which convert hydrophobic components of the dissolved organic matters in the tail water into forms usable by the algae. The constructed wetland comprises a pond body, the pond body is filled with a matrix, aquatic plants are also planted in the wetland, and an ecological floating bed is constructed in the ecological pond.

Description

technical field [0001] The invention belongs to the technical field of resource and environment protection, and in particular relates to an environmentally friendly treatment method for algae pond-artificial wetland-ecological pond for tail water of urban sewage treatment plants. Background technique [0002] With the development of urbanization and the improvement of living standards, the discharge of urban domestic sewage has increased significantly. In order to reduce the impact of domestic sewage discharge on the water quality and water ecology of receiving water bodies, the treatment rate of urban domestic sewage in my country has also shown a power exponential growth trend. As of December 2017, 5,707 sewage treatment plants have been built nationwide, with a daily treatment capacity of 1.80 ×10 9 m 3 / d. Due to the relatively stable water quality and quantity, the tail water of urban sewage treatment plants has become an important water replenishment method for urban...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/38
CPCC02F3/32C02F3/325C02F2101/38Y02W10/10
Inventor 姜德刚王育来徐金燕林雪萍黄博张琳婷刘贞文
Owner 自然资源部海岛研究中心
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