CN103848499A - Method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland - Google Patents
Method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland Download PDFInfo
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- CN103848499A CN103848499A CN201210496158.3A CN201210496158A CN103848499A CN 103848499 A CN103848499 A CN 103848499A CN 201210496158 A CN201210496158 A CN 201210496158A CN 103848499 A CN103848499 A CN 103848499A
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Abstract
The invention belongs to the water treatment field, and especially relates to a method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland. The method is characterized in that the depth of a wavy subsurface-flow constructed wetland pool is 1.2-1.8m, two water distributing walls are established along water flow direction in a pool body, and the distance between the first water distributing wall and a water inlet end is 10-40% of the pool body length, the distance between the second water distributing wall and the first water distributing wall is 20-70% of the pool body length, the distance between a filling material and an upper rim of the pool body is 0.2m. The filling material between two water distributing walls is covered with 2-5 layers of polyethylene membrane having thickness of 0.1-0.5mm, and then the upper rim of the pool body is covered by soil.
Description
Technical field
The invention belongs to water treatment field, relate in particular to a kind of method that improves drowned flow artificial wet land micro polluted source decontamination effect improving.
Background technology
Artificial swamp (Constructed Wetlands, CWs) be the ecological wastewater processing technology having developed rapidly since the seventies in last century, it utilizes physics, chemistry and the biological action of the complex ecosystem of matrix, plant and the composition of the microorganism to realize dirty water purification.CWs has investment and running cost is low, treatment effect is good, landscape effect is good, be convenient to disperse the advantages such as construction and management, is especially applicable to the sanitary sewage disposal of the vast rural area of China and Small Urban.Artificial swamp is divided into surface current artificial wetland, Horizontal subsurface constructed wetland and vertical subsurface flow formula artificial swamp by water conservancy condition.
Surface streaming wet land system, larger with sewage contact area, the residence time is longer, thereby better to suspended substance (SS), organic matter removal effect.In addition, the aerobic/anaerobic environment that algae, plant plankton, settling form, is easy to nitrated/denitrification, for removal of ammonia and nitrogen provides favourable condition.But it only utilizes plant stem, do not make full use of the microbial film that matrix and root system surface form, thereby cause decontamination effect improving undesirable, on the low side to the clearance of nutritive salt.Meanwhile, the sanitary condition of this class wet land system is poor, easily grows mosquitos and flies in summer, produces stench and affect wetland surrounding environment, and surface easily freezes in the winter time, and system treatment effect temperature influence is larger, and treatment time and the cycle of operation are long.
Hydraulic load and the pollution load of horizontal drowned flow formula wet land system are large, removal effect to contamination indexs such as five-day BOD (BOD), chemical oxygen demand (COD) (COD), suspended substance (SS), heavy metals is good, and little foul smelling and grow mosquitos and flies phenomenon.Shortcoming is to control relative complex, and oxygen supply is not enough to some extent, and Ammonia Nitrification effect is not as vertical current constructed wetland.
Vertical subsurface flow formula wet land system nitrification ability, higher than horizontal subsurface flow wetland, can be used for processing the sewage that ammonia-nitrogen content is higher.Its shortcoming be to organic removal ability not as Horizontal subsurface constructed wetland system, fall dry, the waterflooding time is longer.
The many waterhead areas of current China are subject to the impact that external source is polluted, and become micro polluted source.Due to the detergent power of waterworks a little less than, if in advance micro polluted source do not processed and directly entered waterworks, can cause tap water quality to decline, affect HUMAN HEALTH.Micro polluted source, before entering waterworks, often adopts artificial swamp method to process at present.Artificial Wetland Techniques is due to the restriction of own characteristic, and floor space is large, causes soil and fund to expend very large.Therefore, need the feature for micro polluted source badly, develop efficient Artificial Wetland Techniques.
Summary of the invention
The object of this invention is to provide a kind of method that improves drowned flow artificial wet land micro polluted source decontamination effect improving, for thing Purification of Polluted Sources of Water provides technical support.
The present invention, by lot of experiments, has studied the decontamination effect improving of kinds of processes drowned flow artificial wet land to micro polluted source, and result shows, manufactures anaerobic environment and can significantly improve its decontamination effect improving in drowned flow artificial wet land.Core of the present invention is that report utilizes the artificial method of manufacturing anaerobic environment raising drowned flow artificial wet land purifying slightly polluted water source effect.
A kind of method that improves drowned flow artificial wet land micro polluted source decontamination effect improving is:
(1) while building drowned flow artificial wet land, the degree of depth of pond body is set as to 1.2-1.8m, and build twice cloth waterwall in water (flow) direction in the body of pond, first cloth waterwall 1 is the 10%-40% of pond body length with the distance of feed-water end, and second cloth waterwall 4 is the 20%-70% of pond body length with first cloth waterwall distance.
(2) filling filler 3 is to apart from pond body upper limb 0.2m.
(3) on the filler between twice cloth waterwall, cover the polyethylene film 2 that 2-5 layer 0.1-0.5mm is thick, then earthing 3 is to pond body upper limb.
The present invention can form oxygen-starved area between first and second road cloth waterwall, improves denitrification, finally improves the clearance of pollutent.
Embodiment
It is characterized in that: it comprises first cloth waterwall 1, polyethylene film 2, filler 3, second cloth waterwall 4 and soil 5.
A kind of method that improves drowned flow artificial wet land micro polluted source decontamination effect improving is: the degree of depth of building drowned flow artificial wet land pond body is 1.2-1.8m, in water (flow) direction in the body of pond, build twice cloth waterwall, first cloth waterwall 1 is the 10%-40% of pond body length with the distance of feed-water end, and second cloth waterwall 4 is the 20%-70% of pond body length with first cloth waterwall distance.Filling filler 3 is to apart from pond body upper limb 0.2m.On the filler between twice cloth waterwall, cover the polyethylene film 2 that 2-5 layer 0.1-0.5mm is thick, then earthing 3 is to pond body upper limb.
Accompanying drawing explanation
Further illustrate the present invention below in conjunction with accompanying drawing and by specific embodiment.
Fig. 1, basic structure schematic diagram of the present invention.
First cloth waterwall 1, polyethylene film 2, filler 3, second cloth waterwall 4 and soil 5.
Below by the furthermore bright the present invention of multiple embodiment.
Embodiment 1
The degree of depth of building drowned flow artificial wet land pond body is 1.8m, builds twice cloth waterwall in the water (flow) direction in the body of pond, and first cloth waterwall 1 is 20% of pond body length with the distance of feed-water end, and second cloth waterwall 4 is 50% of pond body length with first cloth waterwall distance.Filling filler 3 is to apart from pond body upper limb 0.2m.The thick polyethylene film 2 of obtain three layers 0.1mm on the filler between twice cloth waterwall, then earthing 3 is to pond body upper limb.After water flowing, when hydraulic load is 1m
3/ m
2d, influent COD, ammonia nitrogen, total nitrogen are 30,1, when 6mg/L, clearance is 41,64,55%.
Embodiment 2
The degree of depth of building drowned flow artificial wet land pond body is 1.6m, builds twice cloth waterwall in the water (flow) direction in the body of pond, and first cloth waterwall 1 is 30% of pond body length with the distance of feed-water end, and second cloth waterwall 4 is 50% of pond body length with first cloth waterwall distance.Filling filler 3 is to apart from pond body upper limb 0.2m.On the filler between twice cloth waterwall, cover 5 layers of polyethylene film 2 that 0.1mm is thick, then earthing 3 is to pond body upper limb.After water flowing, when hydraulic load is 1m
3/ m
2d, influent COD, ammonia nitrogen, total nitrogen are 30,1, when 6mg/L, clearance is 44,64,65%.
Embodiment 3
The degree of depth of building drowned flow artificial wet land pond body is 1.8m, builds twice cloth waterwall in the water (flow) direction in the body of pond, and first cloth waterwall 1 is 20% of pond body length with the distance of feed-water end, and second cloth waterwall 4 is 50% of pond body length with first cloth waterwall distance.Filling filler 3 is to apart from pond body upper limb 0.2m.On the filler between twice cloth waterwall, cover 5 layers of polyethylene film 2 that 0.3mm is thick, then earthing 3 is to pond body upper limb.After water flowing, when hydraulic load is 1m
3/ m
2d, influent COD, ammonia nitrogen, total nitrogen are 30,1, when 6mg/L, clearance is 61,64,66%.
Claims (2)
1. one kind is improved the method for drowned flow artificial wet land micro polluted source decontamination effect improving, it is characterized in that: it comprises that it comprises first cloth waterwall (1), polyethylene film (2), filler (3), second cloth waterwall (4) and soil (5), first cloth waterwall (1) is the 10%-40% of pond body length with the distance of feed-water end, and second cloth waterwall (4) is the 20%-70% of pond body length with first cloth waterwall distance.Filling filler (3) is extremely apart from pond body upper limb 0.2m.
2. a kind of method that improves drowned flow artificial wet land micro polluted source decontamination effect improving according to claim 1, it is characterized in that covering the polyethylene film (2) that 2-5 layer 0.1-0.5mm is thick on the filler between above-mentioned twice cloth waterwall, then earthing (3) is to pond body upper limb.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210496158.3A CN103848499A (en) | 2012-11-29 | 2012-11-29 | Method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210496158.3A CN103848499A (en) | 2012-11-29 | 2012-11-29 | Method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland |
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| CN103848499A true CN103848499A (en) | 2014-06-11 |
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| CN201210496158.3A Pending CN103848499A (en) | 2012-11-29 | 2012-11-29 | Method for increasing purifying effect of micro pollution water source in subsurface-flow constructed wetland |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946353A (en) * | 2017-04-28 | 2017-07-14 | 中国海洋大学 | A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087158Y (en) * | 2007-08-17 | 2008-07-16 | 严廷林 | Wet land wastewater treatment system |
| CN102249488A (en) * | 2011-06-10 | 2011-11-23 | 安徽汇泽通环境技术有限公司 | Integrated garden type artificial wetland for treating rural domestic sewage |
| US8252182B1 (en) * | 2008-09-11 | 2012-08-28 | University Of Central Florida Research Foundation, Inc. | Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems |
-
2012
- 2012-11-29 CN CN201210496158.3A patent/CN103848499A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201087158Y (en) * | 2007-08-17 | 2008-07-16 | 严廷林 | Wet land wastewater treatment system |
| US8252182B1 (en) * | 2008-09-11 | 2012-08-28 | University Of Central Florida Research Foundation, Inc. | Subsurface upflow wetland system for nutrient and pathogen removal in wastewater treatment systems |
| CN102249488A (en) * | 2011-06-10 | 2011-11-23 | 安徽汇泽通环境技术有限公司 | Integrated garden type artificial wetland for treating rural domestic sewage |
Non-Patent Citations (1)
| Title |
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| 潘珉等: "潜流式人工湿地基质堵塞问题对策研究", 《环境工程学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106946353A (en) * | 2017-04-28 | 2017-07-14 | 中国海洋大学 | A kind of apparatus and method for improving drowned flow artificial wet land denitrification effect |
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Application publication date: 20140611 |