Counter flow type vertical flow artificial wetland system

A constructed wetland system and constructed wetland technology, applied in the field of counter-flow vertical flow constructed wetland system, can solve the problems of blockage, large floor space, unsuitable pollution concentration sewage treatment, etc. The effect of graded effluent quality

Inactive Publication Date: 2013-01-30
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantage of the constructed wetland technology in the prior art is that it occupies a large area and is prone to problems such as blockage, and is not suitable for sewage treatment with high pollution concentration.

Method used

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  • Counter flow type vertical flow artificial wetland system

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specific Embodiment

[0020] Such as figure 1 As shown, the water inlet of the countercurrent vertical flow constructed wetland is provided with a water inlet pipe 1 and a water distribution area 2, and the sewage passes through the water distribution system so that the water flow is evenly distributed in the packing layer;

[0021] Downward flow wetland unit composite packing bed, the bed body from top to bottom is gravel 4, zeolite 5, pebble 6;

[0022] Upward flow wetland unit composite packing bed, the bed body from bottom to top is pebble + rice husk 7, steel slag 8, limestone 9;

[0023] Aquatic plants 3 with strong sewage purification ability and suitable for local environmental conditions are planted on the upper layer of the wetland, such as reeds.

[0024] The water outlet of the upflow constructed wetland unit is provided with a water collection area 10 and a water outlet pipe 11, and the sewage is discharged through overflow.

[0025] The working process of the present invention's sew...

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Abstract

The present invention discloses a counter flow type vertical flow artificial wetland system, which comprises a downward flow artificial wetland unit and an upward flow artificial wetland unit, wherein the downward flow artificial wetland unit and the upward flow artificial wetland unit are respectively provided with a composite filler bed, the top of the downward flow artificial wetland unit is provided with a water inlet pipe and a water distribution region, the top of the upward flow artificial wetland unit is provided with a water collection region and a water outlet pipe, the bottoms of the downward flow artificial wetland unit and the upward flow artificial wetland unit are connected through a connection pipe, fillers in the composite filler bed of the downward flow artificial wetland unit are sequentially gravel, zeolite and cobbles from top to bottom, and fillers in the composite filler bed of the upward flow artificial wetland unit are sequentially cobbles added with rice husk, steel slag and limestone from bottom to top. With the counter flow type vertical flow artificial wetland system, a deep treatment can be performed on the existing secondary wastewater treatment plant; a structure is simple; management is convenient; clogging is not easily generated; operation cost is low; a nitrogen and phosphorus removal effect is good; artificial wetland sewage treatment effect enhancement can be achieved; and water quality of secondary effluent of the city sewage treatment plant can be improved.

Description

technical field [0001] The invention relates to a sewage treatment system applied to the advanced treatment of tail water of a secondary biochemical treatment plant in cities and towns, in particular to a countercurrent vertical flow constructed wetland system. Background technique [0002] In urban sewage treatment, nitrogen, phosphorus and other pollutants in the effluent treated by traditional sewage plants cannot meet the water quality requirements of surface IV water bodies. Mainly MBR process, BAF process and chemical oxidation process, the processes for advanced treatment of existing sewage treatment plants all have defects such as huge investment and operating costs, and unstable water output. [0003] Constructed wetland technology is a wastewater treatment technology that uses ecological and natural means to remove pollutants. It has great potential in purifying water quality and improving landscapes. It has good application prospects and has been widely used. Acc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/32
CPCY02W10/10
Inventor 张春晖张雯雯陈俊宁可郭远杰林辉
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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