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Method and device for treating domestic sewage by earthworm strengthened artificial wet land

A technology for constructed wetlands and treatment devices, applied in chemical instruments and methods, sustainable biological treatment, multi-stage water/sewage treatment, etc. Odor decolorization effect, growth-promoting effect

Inactive Publication Date: 2008-02-13
SOUTHEAST UNIV +2
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  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the constructed wetland technology, the present invention provides a method and device for earthworm-enhanced sewage treatment in constructed wetlands. By using the method, earthworms with sewage treatment effects are introduced into the wetland soil layer in the device to improve the existing constructed wetlands. The dissolved oxygen distribution in the sewage treatment system overcomes its shortcomings such as easy clogging and poor denitrification effect, and improves the degradation of organic matter and phosphorus removal effect

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  • Method and device for treating domestic sewage by earthworm strengthened artificial wet land

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Embodiment 1

[0018] Embodiment 1: In the present invention, domestic sewage enters the earthworm-enhanced constructed wetland treatment device (2-4) after passing through the grid (2-1) and the aeration filter tank (2-2).

[0019] The grille (2-1) can be a coarse grille or a middle grille, which is arranged at the inlet of the water collection well to retain larger suspended and floating matter.

[0020] The size of the aeration filter tank (2-2) is determined according to the amount of treated water, and removes part of inorganic matter and macromolecular organic matter, and removes more than 40% of suspended matter at the same time. The sewage is discharged to the artificial wetland device through the submersible sewage pump (2-3).

[0021] The earthworm-enhanced constructed wetland treatment devices (2-4) are subsurface flow constructed wetlands, including water inlet area (3-1), water outlet area (3-3) and treatment area. The detailed structure is shown in Figure 3. Both the water inl...

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Abstract

The present invention discloses a sewage treatment method and device by the angleworm strengthening with manual everglade; the method is to put one type of angleworm with sewage treatment effect into the wet soil of the device in order to improve the oxygen-distribution situation in the existing manual everglade treatment technical; the method can overcome the shortcoming that: the existing sewage treatment is easy to be blocked and the effect for de-nitrogen and de-phosphor is much worse. The method can enhance the effect of organic substance separating and de-nitrogen and de-phosphor and prolong the everglade filling and exchanging period. The sewage after being treated can reach the drainage standard and realize the resource utilization requirement.

Description

1. Technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method and a device for treating domestic sewage in an earthworm-enhanced constructed wetland. 2. Background technology [0002] Existing technology: Constructed wetlands, as a sewage ecological treatment technology, have the advantages of low operating costs, simple maintenance and management, little impact on surrounding areas, decentralization, and miniaturized construction, and are especially suitable for on-site sewage in suburban low-density communities and rural areas deal with. However, this technology still has the limitations of low dissolved oxygen concentration, easy to block water, poor ammonia nitrogen removal effect, and phosphorus removal rate decreases with the extension of operation time when treating sewage, which has become a technical bottleneck affecting its sewage treatment benefits. Constructed wetlands Sewage treatment technology needs to...

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Application Information

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IPC IPC(8): C02F9/14C02F3/12C02F3/32
CPCY02W10/10
Inventor 傅大放张春荣陈肖飞黄娟贾静付险峰
Owner SOUTHEAST UNIV
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