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Suspended combined ecological filter bed and method for remediation of eutrophicated water

An ecological filter bed and suspension technology, which is applied in the field of filter bed and restoration of water bodies, suspension-type combined ecological filter beds and restoration of eutrophic water bodies, can solve the problem of difficult to achieve continuous and efficient restoration of eutrophic water bodies and failure to achieve eutrophication. Resource utilization of water bodies, frequent flushing or replacement of filter materials, etc., to achieve the effect of solving the problem of clogging and water blocking, flexible and convenient assembly, and alleviating the problem of black and odor

Inactive Publication Date: 2012-02-15
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 is greatly affected by seasonal factors, so it is difficult to achieve continuous and efficient restoration of eutrophic water body
[0004] In addition, limited by the planting method and growth environment, the water-purifying plants in the ecological floating bed and ecological filter bed technology are mostly water-loving ornamental plants, which are difficult to achieve high economic added value. After removal, most of them are solid Disposal of waste, failed to realize resource utilization of eutrophic water body

Method used

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  • Suspended combined ecological filter bed and method for remediation of eutrophicated water
  • Suspended combined ecological filter bed and method for remediation of eutrophicated water
  • Suspended combined ecological filter bed and method for remediation of eutrophicated water

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A campus landscape water corridor is selected as the water body to be restored, and the total area of ​​the water body is 400 m 2 , the water depth is about 2m, the water body is turbid and dark green, algae multiply in summer, accompanied by fishy smell, the water quality of the lake: COD is 20.34 mg / L, TN is 6.367 mg / L, TP is 0.543 mg / L, ammonia nitrogen is 1.548 mg / L, DO is 1.22 mg / L, and transparency is 0.23m.

[0049] Put 52 lift-type floating baskets with a size of 550×400×300mm on the water surface, connect them into 2 rows, arrange water pipes and 13 miniature water distribution atomization nozzles in the middle, and each nozzle has a water distribution diameter of 1.2m. The thickness of the floating bead layer in the floating basket is 50mm, and the thickness of the ultra-light filter material layer of the concave soil base is 200mm. 2 .

[0050] After 5 days of sowing, the grass seedlings have emerged, and the intermittent water distribution operation is car...

Embodiment 2

[0052] 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.

[0053] On the day when the water quality index is measured, ecological lifting floating baskets are arranged along both sides of the river, with two rows on each side, and each row is 100m long. The lifting floating baskets ...

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Abstract

The invention discloses a suspended combined ecological filter bed and a method for remediation of eutrophicated water. The method for remediation of eutrophicated water is characterized in that a lift suspended basket is utilized as a container unit; a suspended double-filter layer composed of fly ash floating beads and ultralight attapulgite-based filter materials is loaded in the lift suspended basket; the suspended double-filter layer is a base layer for plant growth; and sewage filtration and system oxygen increasing are realized by water atomization distribution processes. Through a structural design of the suspended double-filter layer, the method provided by the invention solves effectively the problems that filter material blocking happens easily, realizes transformation from an ecological filter bed technology to a water surface remediation technology similar to an ecological suspended bed technology, avoids land occupation and construction, realizes efficient eutrophicated water remediation, reduces greatly construction and operation costs, enlarges a selection range of water cleaning plants, and is especially suitable for remediation of high-eutrophication degree water which is difficult to be treated by a single technical means.

Description

technical field [0001] The invention relates to a filter bed and a method for repairing a water body, in particular to a suspended combined ecological filter bed and a method for repairing a eutrophic water body, and belongs to the technical field of sewage purification. Background technique [0002] Ecological filter bed is a water body restoration technology initiated 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/32C02F3/34C02F3/30
CPCY02W10/10
Inventor 刘雪梅杜卫刚马喜君钱佩佩胡涛郝达平
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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