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Method for keeping sewage purification effects of wetland in winter

A sewage purification and wetland technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., to achieve good purification effect, low energy consumption, and low operating costs

Inactive Publication Date: 2015-07-22
SUZHOU POLYTECHNIC INST OF AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Brodrick et al. found that the denitrification rate is very low at around 5°C, which largely limits the volatilization of wetland denitrification.

Method used

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  • Method for keeping sewage purification effects of wetland in winter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In the process of purifying sewage, the other group adopted the normal treatment process of traditional vertical subsurface flow constructed wetlands, and monitored the total number of microorganisms in the wetland water samples for 3 consecutive days when the temperature was around 0°C.

[0030] The result is as figure 1 As shown, the total number of microorganisms in the constructed wetland is increased from 4×108 / mL to 11×108 / mL by the method of the present invention, and the increase in the number of microorganisms can have a good sewage purification effect.

[0031] Example 2

[0032] Sewage purification experiment of horizontal subsurface flow artificial wetland in a village in low temperature season in winter

[0033] In the sewage purification test of constructed wetland in a village in low temperature winter season, the experiment was divided into two groups. In this embodiment group, horizontal subsurface flow constructed wetland was selected. The main wetla...

Embodiment 2

[0036] The result is as figure 2 As shown, the removal rate of TN and TP in the constructed wetland is increased from about 60% to more than 80% by the method of the present invention compared with the conventional technology, and the effluent effect is significantly improved.

[0037] The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. It should also be regarded as the protection scope of the present invention.

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Abstract

The invention discloses a method for keeping sewage purification effects of a wetland in winter. The method comprises the following steps: (1) digging holes with depths of more than or equal to 50cm at certain intervals according to the trend of the wetland, correspondingly inserting a bamboo pole into each hole, bending every two symmetric bamboo poles on the left and right sides, and fixing the bamboo poles to form a cambered bracket by using lead wires; (2) digging deep trenches in the land on the left and right sides of the cambered bracket, covering the outer side of the cambered bracket with a thin film, burying the bottom of the thin film into the deep trenches, and compacting the bottom of the thin film with earth; (3) covering the bamboo poles erected at openings in the two ends of the cambered bracket with thin films, and reserving a movable opening in each thin film. According to the method for keeping the sewage purification effects of the wetland in winter, good purification effects and high sewage removal rate are achieved, and effluent reaches a standard; in addition, compared with the conventional method for artificial wetland treatment at low temperature in winter, the method has the advantages of low energy consumption, high simplicity in operation and low running cost.

Description

Technical field: [0001] The invention relates to a method for maintaining the purification effect of wetland sewage in winter, and belongs to the technical field of water pollution control. Background technique: [0002] In the 1970s, the artificial wetland technology used the original natural wetlands to exist in the form of mud. In the late 1980s, the artificial wetlands developed from natural wetlands to artificial constructions, with different particle sizes of stones as the main matrix. Filling, and planting a certain type of effective plant treatment system, since the mid-1990s, the scope of application of constructed wetlands has continued to expand, and its unique and complex mechanism of action has also been studied by professionals from all over the world. [0003] The constructed wetland system plants aquatic plants with certain pollutant treatment capabilities in the pool, and achieves the purpose of treating pollutants through the adsorption, biochemical, filt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32
CPCC02F3/327C02F2203/006C02F2301/00C02F2301/10Y02W10/10
Inventor 马国胜于淼李振陆马燎
Owner SUZHOU POLYTECHNIC INST OF AGRI
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