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Quasi-ecological corbicula fluminea surface-flow constructed wetland and operating method thereof

A technology of artificial wetlands and river clams, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., to achieve low operating costs, no secondary pollution, and low investment

Active Publication Date: 2013-12-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no report on the use of river clam surface constructed wetlands to treat wastewater

Method used

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  • Quasi-ecological corbicula fluminea surface-flow constructed wetland and operating method thereof
  • Quasi-ecological corbicula fluminea surface-flow constructed wetland and operating method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0016] as attached figure 1 And attached figure 2 As shown, the wetland bed 2 of the present invention has a rectangular structure with an aspect ratio of 2:1, and the front and rear ends of the wetland have water inlet pipes 5 and water outlet pipes 7 respectively. The bed 2 of the wetland is made of concrete, and the bottom of the bed is filled with a 50-70cm sand layer 8, which is sandy loam, on which wetland plants 1 such as sunflower, tall fescue, ryegrass, and iris are planted. Both side walls of the wetland bed body 2 are equipped with timing aeration device 6, which can automatically adjust the start and stop time of the aeration device according to the temperature change and the concentration of dissolved oxygen in the water, so as to ensure that the dissolved oxygen in the water is 5mg / L. Place river clam cage 4 on sand layer 8, the water level of wetland remains on 40-45cm, and water surface 3 has not crossed river clam cage 10-15cm approximately. The river clam ...

Embodiment 2

[0019] The operation method is the same as that of Example 1. Since the vigorous reproductive period of the clam is in summer, the difference is that the dissolved oxygen in the summer wetland system is controlled at 5-6mg / L, and the dissolved oxygen in the winter wetland system is controlled at 4-5mg / L.

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Abstract

The invention relates to a quasi-ecological corbicula fluminea surface-flow constructed wetland and an operating method thereof. The constructed wetland comprises a bed body, timed aeration devices, corbicula fluminea cages, corbicula fluminea, a sandy soil layer and wetland plants, wherein the wetland bed body is of a cuboid, a water inlet pipe and a water outlet pipe are respectively arranged at the front and rear ends of the wetland, the wetland bed body is made of concrete, the sandy soil layer with the thickness of 50-70cm is packed at the bottom of the bed body, the timed aeration devices are mounted on two sidewalls of the bed body, and the corbicula fluminea cages containing corbicula fluminea are placed in gaps among the wetland plants on the sandy soil layer. According to the quasi-ecological corbicula fluminea surface-flow constructed wetland and the operating method thereof, the corbicula fluminea cages, the plants and microorganisms are combined, so that sewage is subjected to intensified treatment, the quality of outlet water is good, and no secondary pollution is caused; compared with the natural state, the number of corbicula fluminea in water is increased greatly, and the sewage purifying effect is enhanced.

Description

1. Technical field [0001] The invention belongs to the field of sewage treatment, and relates to a river clam surface flow artificial wetland for treating domestic wastewater. 2. Background technology [0002] With the rapid development of my country's national economy, in recent years, the production capacity of industry and agriculture has been continuously improved, and people's lives have been further improved. Among them, the environmental pollution caused by domestic sewage has attracted great attention from all over the world. The discharge of urban domestic sewage in our country is increasing year by year. At the same time, the quantity and quality of the sewage produced have undergone great changes. It is difficult to achieve satisfactory results by using the original technology to treat sewage, and it needs to be improved. [0003] At present, in sewage treatment, the most commonly used treatment technologies are oxidation ditch technology and SBR technology. The...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34
CPCY02W10/10
Inventor 张建张馨文张成禄赵聪聪程呈
Owner SHANDONG UNIV
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