Suspended combined ecological filter bed

An ecological filter bed, suspended technology, applied in the field of suspended combined ecological filter bed, can solve the problems of frequent flushing or replacement of filter material, easy clogging and hardening of filter material, large floor space, etc., to solve the problem of clogging and water blocking, Does not occupy water body space, the effect of high adsorption capacity

Inactive Publication Date: 2011-12-14
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this technology are: ①The filter material is easy to block and harden during the operation period, and frequent washing or replacement of the filter material is required, and the operation and maintenance costs are high; ②It occupies a large area and the construction period of civil engineering is long. Urban applications are extremely limited
The disadvantage of this technology is that due to the limitation of the plant growth cycle, the restoration effect of water body is slow, and it...

Method used

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  • Suspended combined ecological filter bed
  • Suspended combined ecological filter bed
  • Suspended combined ecological filter bed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A campus landscape water corridor is selected as the water body to be restored. The total area of ​​the water body is 400 m2, and the water depth is about 2m. TN is 6.367 mg / L, TP is 0.543 mg / L, ammonia nitrogen is 1.548mg / L, DO is 1.22 mg / L, and transparency is 0.23m.

[0042]Put 52 floating baskets with a size of 550×400×300mm on the water surface, connect them into 2 rows, arrange water pipes and 13 micro-atomized water distribution nozzles in the middle, each nozzle has a water distribution diameter of 1.2m, and the powder in the floating basket The thickness of the coal ash bleaching pearl layer is 50mm, the thickness of the attapulgite-based ultra-light filter material layer is 200mm, and the planting plants are American perennial grasses, and the seeding density is 1g / m 2 .

[0043] Five days after sowing, the grass seedlings came out, and the intermittent water distribution operation was carried out. The water distribution was carried out for 6 hours a day, and...

Embodiment 2

[0045] A semi-enclosed river in the city is selected as the water body to be repaired. The river was originally a water body for receiving domestic sewage from residents on both sides. The function of the water area is transformed into a landscape river course; in rainy seasons, precipitation is used to replenish the amount of evaporated and infiltrated water; in dry seasons, regular replenishment of sewage is used to ensure normal water levels, and the general water replenishment period is about 15 days; the second day after a certain replenishment, sampling The water quality was measured, and the water quality indicators were: COD was 110.42 mg / L, TN was 29.859 mg / L, TP was 6.543 mg / L, dissolved oxygen content was 0.786 mg / L, and transparency was 0.15m.

[0046] On the day when the water quality index was measured, ecological floating baskets were arranged along both sides of the river, with two rows on each side, and each row was 100m long. Set up an atomized water distribu...

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Abstract

The invention discloses a suspended-type combined ecological filter bed. The combined ecological filter bed is a suspended filter bed which is integrally composed of elevation-type floating baskets used as basic units, suspended double filter layers filed in the floating baskets, and water distributors installed at the connection gaps of the floating baskets. When the filter bed is used, multiplefloating baskets are connected each other and float on the water to be repaired; and the suspended double filter layers are used as core functional areas of the ecological filter bed, and organicallyintegrate plant absorption, filter material adsorption, filtration, biofilm formation and other purification mechanisms, thereby achieving efficient repair of eutrophicated water bodies. The filter bed disclosed by the invention has the advantages of simple structure, easy assembly, easy operation of plant cultivation, no filter material blockage and the like, is easy to cultivate plant and is especially for repairing eutrophicated water bodies which are ineffectively repaired by using a single technology.

Description

technical field [0001] The invention relates to a suspended combined ecological filter bed for restoration of eutrophic water body, which belongs to the technical field of sewage purification. Background technique [0002] Ecological filter bed is a water body restoration technology developed on the basis of vertical flow constructed wetlands. Because it organically integrates various purification mechanisms such as filtration, adsorption and degradation functions of plants, animals and microorganisms in the system, the restoration effect is fast and stable. , the low temperature season can still maintain a good operating effect. The main disadvantages of this technology are: ①The filter material is easy to block and harden during the operation period, frequent washing or replacement of the filter material is required, and the operation and maintenance costs are high; ②It occupies a large area and the construction period of civil engineering is long. Urban applications are ...

Claims

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Application Information

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IPC IPC(8): C02F3/32C02F3/34C02F3/30
CPCY02W10/10
Inventor 刘雪梅杜卫刚马喜君许晨红康志军
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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