Method and system for treating sewage through composite tidal current artificial marsh

A technology of constructed wetlands and tidal flow, applied in aerobic and anaerobic process treatment, sustainable biological treatment, chemical instruments and methods, etc., to achieve the effect of reducing substrate hardening, reducing the high pH value of effluent and high denitrification rate

Active Publication Date: 2013-05-01
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of the existing single-stage tidal flow artificial wetland treatment method for sewage, the primary purpose of the present invention is to provide a compound tidal flow artificial wetland treatment method for sewage with low treatment cost, small footprint, and good nitrogen and phosphorus removal effects. method

Method used

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  • Method and system for treating sewage through composite tidal current artificial marsh
  • Method and system for treating sewage through composite tidal current artificial marsh
  • Method and system for treating sewage through composite tidal current artificial marsh

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Embodiment 1

[0037] The composite tidal flow artificial wetland treatment system of the present invention is composed of three parts: "a first-level tidal flow wetland unit + a second-level tidal flow wetland unit + a water storage tank". Unit structures such as elevated water tanks, primary tidal flow constructed wetlands, secondary tidal flow constructed wetlands and reservoirs are connected by pipes. The high-level water tank is connected to the first-level tidal flow artificial wetland through the sewage pipe, and the second-level tidal flow artificial wetland is connected to the first-level tidal flow artificial wetland outlet pipe through the second-level tidal flow artificial wetland water distribution pipe.

[0038] The composite tidal flow constructed wetland system consists of a bed body, water distribution pipes, and treatment media. The bed wall of the bed body is made of non-seepage material, the bed wall is a brick structure with cement plaster, and the bottom is a concrete st...

Embodiment 2

[0050] In this embodiment, the matrix layer of the two-stage tidal flow constructed wetland is filled with blast furnace slag, and the diameter of the blast furnace slag is 0.1-0.5 cm. Others are the same as in Example 1.

[0051] The system treatment effects (mg / L, %) in this embodiment are shown in Table 1, Table 2, Table 3, Table 4 and Table 5. Table 1, Table 2, Table 3, Table 4 and Table 5 respectively show the COD and BOD in the sewage after the septic tank sewage is treated by the composite tidal flow constructed wetland system 5 , NH 4 + -N, TP, TN concentration changes.

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Abstract

The invention discloses a method and a system for treating sewage through a composite tidal current artificial marsh. The method comprises: firstly, collecting the sewage to a regulating reservoir through an underground diversion conduit, and lifting the sewage into a high cistern through a sewage pump; and secondly, treating the sewage through the two-stage series tidal current artificial marsh,and making the sewage flow into a reservoir. The two-stage tidal current artificial marsh comprises a bed body, a water distribution pipe and a treating medium, and plants are selectively planted on the two-stage marsh. The invention simultaneously provides a system for realizing the treatment method. The invention has low treatment cost, small occupation area and good denitrogenation and dephosphorization effect.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for treating sewage in a composite tidal flow artificial wetland and a treatment system thereof. Background technique [0002] Tidal stream constructed wetland is a type of constructed wetland proposed in recent years. In a tidal flow constructed wetland, the wetland bed is alternately filled with sewage and drained. During the process of sewage flowing into the bed, the air in the bed is gradually squeezed out and consumed, and the bed matrix is ​​gradually submerged. Drainage occurs when the bed is completely filled with sewage, during which fresh air from the atmosphere is brought into the bed. In this way, the water flows in a manner similar to a piston air compressor. Through this alternating movement of water and air in and out, the transfer and consumption of oxygen is greatly improved, which greatly improves the treatment effect of wetland...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/32C02F3/30
CPCY02W10/10
Inventor 崔理华邓佩文楼倩朱文玲朱夕珍
Owner SOUTH CHINA AGRI UNIV
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