CN1944287A - Micro ecological system unit and its use in water environment treatment - Google Patents
Micro ecological system unit and its use in water environment treatment Download PDFInfo
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- CN1944287A CN1944287A CNA2006100972827A CN200610097282A CN1944287A CN 1944287 A CN1944287 A CN 1944287A CN A2006100972827 A CNA2006100972827 A CN A2006100972827A CN 200610097282 A CN200610097282 A CN 200610097282A CN 1944287 A CN1944287 A CN 1944287A
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- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 9
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- 239000011707 mineral Substances 0.000 claims description 2
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- 238000005516 engineering process Methods 0.000 abstract description 17
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention discloses one kind of micro ecological system unit and its application in water environment treatment, and belongs to the field of river and lake water environment treating technology. Inside a casing of ecological concrete material, there are artificial filtering material layer, artificial soil layer and plant from bottom to top. The artificial filtering material layer has common filtering material and special filtering material, the common filtering material is mixture of river sand and clay, and the special filtering material contains iron, aluminum or calcium. The artificial soil layer has mixed soil and sawdust; and the plant can eliminate nitrogen and phosphorus pollutant. The present invention is used in treating water environment, can eliminate SS, COD, BOD5, and nitrogen and phosphorus pollutant effectively, and has low cost.
Description
Technical field
The present invention relates to lake water environmental pollution treatment technology field, river, a kind of little biotope structural system of saying so more specifically and the application in the lake water environmental pollution prevention and control of river.
Background technology
Along with the quickening of China's rapid economy development and urban construction, the pollution becoming serious of Urban Water Environment.The grout stone-laying of outstanding behaviours for the river course is built up three light, letter out pasture and water, bottom-dwelling; The city river two sides nearly all are greyish white axial concrete guard walls, and this is all extremely unbecoming with the peripheral modern or classic art of architecture in modern city river course, also inharmonious with surrounding environment; Simultaneously, the water body in lake eutrophication also is on the rise.Trace it to its cause, the sanitary sewage of some large-scale hotels, residential quarters, market, exploitation tourist district etc., fecal sewage enter sewer line and enter urban water system after simple hydrolytic digestion, owing to do not pass through purifying treatment, the sanitary sewage of a large amount of dischargings has increased the water pollution load greatly.Pollution of area source becomes increasingly conspicuous simultaneously, some directly flows to river course and lake pollution of area source, some washes away through rainwashes such as precipitation and enters city river and lake, has had a strong impact on the Urban Water Environment quality, is one of important factor that causes river course, water body in lake eutrophication.The with serious pollution China's city people health and the ecotope of having jeopardized of Urban Water Environment is one of limiting factor of restriction social economy Sustainable development.
At present, Urban Water Environment is administered and mainly is divided into two parts: water body in lake Pollution abatement and river water body Pollution abatement.The eutrophication control of water body in lake is main at present to adopt nutritive salt to control, and desilting is dredged, and methods such as chemistry, machinery are directly removed algae, biological regulation and control, and aquatic higher plant is repaired, physics ecological engineering technology, immobilized microorganism technique etc.; And for the main at present preposition storehouse technology that adopts of the control of pollution of river thing, artificial swamp technology, quick diafiltration technology, ecological filter technology and eco-concrete technology etc.
Classical preposition storehouse technology is to go into place, the exit of a lake to build a dam in the river course, build up the storehouse system that is positioned at the upstream, lake, be used to hold back the pollutent that enters the main body lake, mainly be silt and phosphorus and nitrogen, preposition storehouse technology is improved lake and the existing at present (number of patent application 200410066164.0 of using of river water body water quality, the plain river network area surface source pollution reinforced depuration prepositive library system), it is better generally the control of lake surface source pollutants to be gone in the river course, but floor space is bigger.The artificial swamp technology is to utilize the distinctive wetland plant of wetland, microorganism by bio-absorbable, physical filtering, chemosynthesis and decomposition etc. pollutent to be converted into nontoxic, harmless even useful material (number of patent application 200310111813.X, municipal effluent combined artificial wetland denitrification and dephosphorization method), better for the pollutent control effect of going into the lake, river, but need have certain floor space equally.The diafiltration technology is one type that the soil is handled fast, is meant the surface that controlledly sewage is invested in the filtration media of manually constructing, and makes its different physics, chemistry and biological action of experience in the process of infiltration downwards, finally reaches the process of purifying waste water.Its core is that natural river sand, haydite, coal gangue etc. replace natural soil layer for main filtration media to the employing penetrating quality preferably, to improve hydraulic load, reach the purpose of removing water pollutant, also existing at present patent report (number of patent application 200410073951.8, artificial rapid diafiltration sewage treating system).But only be applicable to the river course of soil property bank protection when handling the river water body pollutent, be subjected to the restriction in place, hydraulic load is little, floor space is big.
The eco-concrete technology is to adopt a kind of technology of eco-concrete member treating water body pollution.So-called eco-concrete is a class special concrete, has special structure and surface property, can reduce carrying capacity of environment, coordinates mutually with ecotope, and can make contributions for environmental protection.The notable attribute of eco-concrete is exactly that porosity is big, and good water permeability and high adsorption capacity can be used for sewage purification.Eco-concrete mainly reaches biomembranous biological action removing and the pollution degradation material that forms gradually by physics, chemistry, to reach the purpose of sewage purification.At present, eco-concrete existing use (number of patent application CN99226703.X, a kind of new bio water treatment plant) that be used to purify waste water.
Summary of the invention
1, the technical problem that will solve
The invention provides a kind of micro ecological system unit and the application in water environment treatment thereof.Be commonly cement at China's present river course section and cause the river channel ecology system degradation more serious, the self-purification capacity of water body is lost substantially, and the city domestic sewage centralized treatment rate is low, and the unprocessed direct discharging of city domestic sewage enters the river course greatly; Rainwash has caused serious pollution of area source.The present invention combines the advantage of above-mentioned various treatment technologies, be on the basis of shell with the eco-concrete member, plant, microorganism, soil animalcule, substrate material to inside carry out reasonable configuration, make full use of the effect of microorganism, animal, plant and the effect of filtrate medium and effectively handle, can reach and remove SS, COD, BOD effectively the external source that enters the river course is polluted
5With the denitrogenation dephosphorizing result.
2, technical scheme
Principle of the present invention is that the complex ecosystem of integrated application plant-microorganism-soil animalcule-matrix-eco-concrete is handled river course, water body in lake; Be on the basis of shell with the eco-concrete member, plant, microorganism, soil animalcule, substrate material to inside carry out reasonable configuration, make full use of the effect of microorganism, animal, plant and physics, the chemical property of packing medium and effectively handle, water body is purified the external source that enters the river course is polluted.
Technical scheme of the present invention is as follows:
Micro ecological system unit, adopt the eco-concrete material as shell, from bottom to top be divided into Artificial filtering material layer, artificial soil layer and plant in the housing, the Artificial filtering material layer of bottom is made up of by mixing or layer mode general filtrate and special filtrate, wherein general filtrate is that natural impact river sand and clay mix, special filter material layer is the material of iron content, aluminium or calcium, and artificial soil is mixed by original soil and acute wood chip, and the upper strata plant can be removed the plant of nitrogen phosphorus.
The processing requirement of the eco-concrete material that shell adopts is: the eco-concrete voidage is 15%～20%, coefficient of permeability 〉=1 * 10
-1Cm/s, pH value about 8～9, the preparation maintenance after 28 days ultimate compression strength reach 〉=18Mpa, have stronger resistance to corrosion.But (the technology reference of relevant eco-concrete: number of patent application 200410101797.2, low alkalinity ecological concrete; Wu Zhiren, Lu Chunhua etc.; " cast-in-place bank protection vegetation type ecological concrete performance index and endurance quality ". Jiangsu University's journal, 2005,26 (5))
The eco-concrete shell length and width of micro ecological system unit can determine that the degree of depth will satisfy the needs of selected plant root growth, generally between 40～100cm according to actual landform.
The inner wadding warp of micro ecological system unit is crossed the Artificial filtering material and the artificial soil of reasonable disposition.
Artificial filtering material is made up of general filtrate and 1: 1 by volume～1: 5 ratio of special filtrate of particle level.Wherein general filtrate is that natural impact river sand and 90: 10 by volume～95: 5 mixed of clay (following another name for Sichuan Province loess) are formed.The adding of clay mainly is to consider that the penetrating quality of selected filtration media is good, and absorption property is relatively poor, adds the loading capacity that clay can effectively increase filtration media, helps improving filtration media holding back and adsorption pollutent.
Special filtrate in the Artificial filtering material is for containing ironic hydroxide or ferric oxide or aluminiferous natural mineral matter, or the calcareous material for promoting that calcium phosphorus forms.Commonly used is crude substance and materials such as flyash, cinder, slag or grain slag such as Wingdale, vermiculite, attapulgite.
Artificial soil is to adopt original soil (black earth) and 5: 1 by volume～10: 1 mixed of acute wood chip to form.The adding of acute wood chip is in order to improve the organic content of soil, raising is to organic absorption and removal effect, improve soil organic matter content and can also obtain good soil aggregate, improve the ventilating permeable of soil, for microorganism provides good living environment.
Part is two-layer in the micro ecological system unit: the Artificial filtering material layer of bottom adopts general filtrate and special filtrate, and by mixing or the layer mode landfill, the landfill degree of depth is 20～60cm, and top is the artificial soil layer of 10～30cm.
Micro ecological system unit is by 0.2～0.4kg/m
2Put into the soil animalcule, mainly contain earthworm etc.
Press 10～50L/m in the micro ecological system unit
3Add active sludge it is carried out microbial inoculant and domestication.Last two weeks to month.
Little biotope system surfaces is by 200～300 strains/m
2Planted the plant that to remove nitrogen phosphorus.Plant commonly used has: and Rush, rye grass, cattail and paspalum notatum etc. (but the plant of relevant removal nitrogen phosphorus is selected reference: Jiang Yueping, Ge Liang etc. " constructed wetland plant is to viewing and admiring the contribution that nitrogen phosphorus is removed in the water ". Acta Ecologica Sinica, 2004,24 (8); Niu Xiaoyin, Ge Ying etc. " effect of rye grass in the artificial swamp ecological engineering of purifying eutrophic water ". wetland science, 2004,2 (3); Li Derong, Shu Jianmin etc. " nitrogen phosphorus potassium join execute " to paspalum notatum dry-matter accumulation and dynamic effects thereof. grass cultivation journal, 2004,13 (5)).The screening of plant is based on the following aspects principle: (1). well developed root system, and biomass is bigger, is generally perennial; (2). durability against pollution and soil removability are strong; (3). have certain beautification function.
Adopt the application of above-described micro ecological system unit in water environment treatment.Can form complete treatment system by water distribution system, micro ecological system unit and water exhaust system, thereby can remove organism, denitrogenation dephosphorizing effectively.
Micro ecological system unit hydraulic load of the present invention is generally at 0.5～1.5m/d, and the area of handling every cube of sewage is about 1.0m
2/ m
3D.
3, beneficial effect:
The invention discloses a kind of micro ecological system unit, can effectively remove SS, COD, BOD
5Deng organic pollution materials, can reach simultaneously the effect of denitrogenation dephosphorizing, the pollutent power of deenergizing is strong.The material that micro ecological system unit of the present invention adopted is industrial residue, river sand and soil etc., and expense is cheap, and can play the purpose of pollutent resource utilization simultaneously.Micro ecological system unit of the present invention can not cause secondary pollution when removing pollutent, also play the effect of necessarily beautifying the environment simultaneously.Micro ecological system unit of the present invention is not subjected to place restriction applied range and construction investment is few, overhead charges are little, easy to operate, manageable.Micro ecological system unit of the present invention is applicable to the wide geographic area that no ice period or ice period lack, and is applicable to the processing of contaminated river, sanitary sewage.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention (general filtrate and a special filtrate layering landfill);
Fig. 2 is another kind of structural representation of the present invention (general filtrate and a special filtrate mixing landfill);
Wherein the 1-eco-concrete housing among two figure, 2-Artificial filtering material layer, 3-artificial soil layer, 4-plant.
Embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Embodiment 1
Carry out at the pilot scale platform, water quality is mainly simulated domestic wastewater.
Adopt long 0.6m, wide 0.6m, dark 0.6m eco-concrete member is as the shell (housing) 1 of micro ecological system unit.Artificial filtering material layer 2 in the micro ecological system unit bottom is general filtrate and 1: 1 by volume mixed landfill of special filtrate, and the landfill degree of depth is 30cm, and top is the thick artificial soil layer 3 of 20cm, and always filling the degree of depth is 50cm.The Artificial filtering material layer is that general filtrate is that natural impact river sand and clay (following another name for Sichuan Province loess) are that 95: 5 mixed are formed by volume.Special filtrate in the Artificial filtering material is the grain slag (main component ratio: calcium oxide 37.4%, aluminum oxide 30.4%, ferric oxide 0.463%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 5: 1 by volume mixed of acute wood chip to form.Press 0.25kg/m at micro ecological system unit
2Put into earthworm (love of the cold-resistant and easily breeding of artificial breeding wins and belongs to big flat earthworm).The micro ecological system unit surface is a plant 4, by 200 strains/m
2Planted paspalum notatum (Paspalum notatum).Press 10L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit falls to doing 16h with continuous water distribution 8h under the high hydraulic load of 60cm/d, and 1: 2 mode of wet-dry ratio is moved continuously.
The water treatment effect of embodiment 1 is as follows:
Under the hydraulic load of 60cm/d, the micro ecological system unit water outlet among the embodiment 1 is limpid, and Pollutant levels are lower, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 79.1%, 93.4%, 41.5% and 86.7%.
Unit: mg/L
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 147.8～253.4 | 24.8～43.4 | 32.8～54.1 | 3.7～8.6 |
| Embodiment 1 water outlet | 14.0～80.9 | 0.5～4.4 | 22.7～37.6 | 0.5～2.6 |
Carry out at the pilot scale platform, water quality is mainly simulated domestic wastewater.
Adopt long 0.6m, wide 0.6m, dark 0.6m eco-concrete member is as the shell 1 of micro ecological system unit.Artificial filtering material layer 2 in the micro ecological system unit bottom is general filtrate and 1: 1 by volume proportional layered landfill of special filtrate, and the landfill degree of depth is 30cm, and wherein lower floor is the thick special filter material layer of 15cm, and the upper strata is the thick general filter material layer of 15cm.On micro ecological system unit top is the thick artificial soil layer 3 of 20cm, and always filling the degree of depth is 50cm.General filtrate in the Artificial filtering material is that natural impact river sand and clay (following another name for Sichuan Province loess) are that 90: 10 mixed are formed by volume.Special filtrate in the Artificial filtering material is the grain slag (main component ratio: calcium oxide 37.4%, aluminum oxide 30.4%, ferric oxide 0.463%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 10: 1 by volume mixed of acute wood chip to form.Press 0.2kg/m at micro ecological system unit
2Put into earthworm (love of the cold-resistant and easily breeding of artificial breeding wins and belongs to big flat earthworm).The micro ecological system unit surface is a plant 4, by 200 strains/m
2Planted rye grass (L.muttiflorum).Press 10L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit falls to doing 16h with continuous water distribution 8h under the high hydraulic load of 60cm/d, and 1: 2 mode of wet-dry ratio is moved continuously.
The water treatment effect of embodiment 2 is as follows:
Under the hydraulic load of 60cm/d, the micro ecological system unit water outlet among the embodiment 2 is limpid, and Pollutant levels are lower, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 78.3%, 81.3%, 36.9% and 50.8%.
Unit: mg/L
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 147.8～253.4 | 24.8～43.4 | 32.8～54.1 | 3.7～8.6 |
| | 8.0～98.5 | 0.9～14.8 | 24.0～41.8 | 2.0～4.4 |
Carry out at the pilot scale platform, water quality is mainly simulated domestic wastewater.
Adopt long 0.6m, wide 0.6m, dark 0.6m eco-concrete member is as the shell 1 of micro ecological system unit.Artificial filtering material layer 2 in the micro ecological system unit bottom is general filtrate and 1: 1 by volume proportional layered landfill of special filtrate, and the landfill degree of depth is 30cm, and wherein lower floor is the thick special filter material layer of 15cm, and the upper strata is the thick general filter material layer of 15cm.On micro ecological system unit top is the thick artificial soil layer 3 of 20cm, and always filling the degree of depth is 50cm.General filtrate in the Artificial filtering material is that natural impact river sand and clay (following another name for Sichuan Province loess) are that 90: 10 mixed are formed by volume.Special filtrate in the Artificial filtering material is the slag (main component ratio: calcium oxide 45.2%, aluminum oxide 5.2%, ferric oxide 15.6%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 10: 1 by volume mixed of acute wood chip to form.Press 0.2kg/m at micro ecological system unit
2Put into earthworm (love of the cold-resistant and easily breeding of artificial breeding wins and belongs to big flat earthworm).The micro ecological system unit surface is a plant 4, by 200 strains/m
2Planted rye grass (L.muttiflorum).Press 10L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit falls to doing 16h with continuous water distribution 8h under the high hydraulic load of 60cm/d, and 1: 2 mode of wet-dry ratio is moved continuously.
The water treatment effect of embodiment 3 is as follows:
Under the hydraulic load of 60cm/d, the micro ecological system unit water outlet among the embodiment 3 is limpid, and Pollutant levels are lower, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 80.5,83.5%, 35.7% and 58.7%.
Unit: mg/L
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 147.8～253.4 | 24.8～43.4 | 32.8～54.1 | 3.7～8.6 |
| | 10.7～85.6 | 1.2～13.5 | 21.2～34.7 | 1.5～3.5 |
Embodiment 4
Carry out in inland river, the Qinhuaihe River in sub-district, Longjiang, Nanjing, and the sanitary sewage of a large amount of directly dischargings in the sub-district and the pollution of area source material that rain drop erosion is brought into have mainly been accepted in this inland river, and water body presents black smelly phenomenon, pollutes comparatively serious.The implementation flow process is as follows:
Open-air field trip, investigation river course sloping bank situation, water level, water quality, current according to the selected experiment of open-air practical situation place, carry out the engineering design of little biotope.Adopt long 2.0m, wide 2.0m, dark 1.0m eco-concrete member is as the shell 1 of micro ecological system unit.The Artificial filtering material layer 2 of micro ecological system unit bottom is general filtrate and 1: 5 by volume mixed landfill of special filtrate, and the landfill degree of depth is 60cm, and top is the thick artificial soil layer 3 of 30cm, and always filling the degree of depth is 90cm.The Artificial filtering material layer is that general filtrate is that natural impact river sand and clay are that 95: 5 mixed are formed by volume.Special filtrate in the Artificial filtering material is the grain slag (main component ratio: calcium oxide 37.4%, aluminum oxide 30.4%, ferric oxide 0.463%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 5: 1 by volume mixed of acute wood chip to form.Micro ecological system unit is pressed 0.3kg/m
2Put into earthworm (like to win to belong to and put down an earthworm greatly).The micro ecological system unit surface is a plant 4, by 250 strains/m
2Mixed planting paspalum notatum and rye grass.Press 20L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit falls to doing 16h with continuous water distribution 8h under the high hydraulic load of 80cm/d, and 1: 2 mode of wet-dry ratio is moved continuously.
Embodiment 4 water treatment effects are as follows:
Under the hydraulic load of 80cm/d, the micro ecological system unit water outlet among the embodiment is limpid, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 67.8%, 93.3%, 40.6%, 66.0%,
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 105.0～249.6 | 16.2～20.9 | 18.3～30.5 | 2.2～6.6 |
| Embodiment 4 water outlets | 36～59.2 | 0.4～4.9 | 10.5～14.6 | 0.8～2.6 |
Embodiment 5
Carry out in inland river, the Qinhuaihe River in sub-district, Longjiang, Nanjing, and the sanitary sewage of a large amount of directly dischargings in the sub-district and the pollution of area source material that rain drop erosion is brought into have mainly been accepted in this inland river, and water body presents black smelly phenomenon, pollutes comparatively serious.The implementation flow process is as follows:
Open-air field trip, investigation river course sloping bank situation, water level, water quality, current according to the selected experiment of open-air practical situation place, carry out the engineering design of little biotope.Adopt long 2.0m, wide 2.0m, dark 1.0m eco-concrete member is as the shell 1 of micro ecological system unit.The Artificial filtering material layer 2 of micro ecological system unit bottom is general filtrate and 1: 3 by volume mixed landfill of special filtrate, and the landfill degree of depth is 60cm, and top is the thick artificial soil layer 3 of 30cm, and always filling the degree of depth is 90cm.The Artificial filtering material layer is that general filtrate is that natural impact river sand and clay are that 90: 10 mixed are formed by volume.Special filtrate in the Artificial filtering material is the slag (main component ratio: calcium oxide 45.2%, aluminum oxide 5.2%, ferric oxide 15.6%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 8: 1 by volume mixed of acute wood chip to form.Micro ecological system unit is pressed 0.25kg/m
2Put into earthworm (like to win to belong to and put down an earthworm greatly).The micro ecological system unit surface is a plant 4, by 300 strains/m
2Mixed planting Rush and cattail.Press 25L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit falls to doing 16h with continuous water distribution 8h under the high hydraulic load of 80cm/d, and 1: 2 mode of wet-dry ratio is moved continuously.
Embodiment 5 water treatment effects are as follows:
Under the hydraulic load of 80cm/d, the micro ecological system unit water outlet among the embodiment is limpid, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 75.5%, 85.6%, 52.6%, 75.2%,
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 105.0～249.6 | 16.2～20.9 | l8.3～30.5 | 2.2～6.6 |
| Embodiment 5 water outlets | 26.8～55.7 | 0.75～6.2 | 8.6～13.2 | 0.4～2.3 |
Embodiment 6
Carry out in tributary, the Qinhuaihe River outside Nanjing, and this tributary is mainly the pollution of area source material that rain drop erosion is brought into, and water quality is mainly IV～V class.The implementation flow process is as follows:
According to the selected experiment of open-air practical situation place, carry out the engineering design of little biotope according to condition of water quality simultaneously: adopt long 2.0m, wide 2.0m, dark 1.0m eco-concrete member is as the shell 1 of micro ecological system unit.The Artificial filtering material layer 2 of micro ecological system unit bottom is general filtrate and 1: 1 by volume mixed landfill of special filtrate, and the landfill degree of depth is 50cm, and top is the thick artificial soil layer 3 of 40cm, and always filling the degree of depth is 90cm.The Artificial filtering material layer is that general filtrate is that natural impact river sand and clay are that 90: 10 mixed are formed by volume.Special filtrate in the Artificial filtering material is the slag (main component ratio: calcium oxide 45.2%, aluminum oxide 5.2%, ferric oxide 15.6%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 10: 1 by volume mixed of acute wood chip to form.Micro ecological system unit is pressed 0.2kg/m
2Put into earthworm (like to win to belong to and put down an earthworm greatly).The micro ecological system unit surface is a plant 4, by 400 strains/m
2Mixed planting paspalum notatum and rye grass.Press 15L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit is with operation continuously under the high hydraulic load of 100cm/d.
Embodiment 6 water treatment effects are as follows:
Under the hydraulic load of 100cm/d, the micro ecological system unit water outlet among the embodiment is limpid, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 61.5%, 75.6%, 45.4%, 48.7%,
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 25.4～34.8 | 3.2～4.8 | 4.6～5.9 | 0.21～0.35 |
| Embodiment 6 water outlets | 9.7～13.5 | 0.8～1.1 | 2.4～3.2 | 0.09～0.2 |
Embodiment 7
Carry out on the Black Warrior lakeside of Nanjing, this lake water is mainly the pollution of area source material that rain drop erosion is brought into, and water quality is mainly IV～V class.The implementation flow process is as follows:
According to the selected experiment of open-air practical situation place, carry out the engineering design of little biotope according to condition of water quality simultaneously: adopt long 1.0m, wide 1.0m, dark 1.0m eco-concrete member is as the shell of micro ecological system unit.The Artificial filtering material layer of micro ecological system unit bottom is general filtrate and 1: 1 by volume mixed landfill of special filtrate, and the landfill degree of depth is 50cm, and top is the thick artificial soil layer of 40cm, and always filling the degree of depth is 90cm.The Artificial filtering material layer is that general filtrate is that natural impact river sand and clay are that 90: 10 mixed are formed by volume.Special filtrate in the Artificial filtering material is the slag (main component ratio: calcium oxide 45.2%, aluminum oxide 5.2%, ferric oxide 15.6%) of Ma'an Mountain Steel Plant.Artificial soil is to adopt original soil (black earth) and 10: 1 by volume mixed of acute wood chip to form.Micro ecological system unit is pressed 0.2kg/m
2Put into earthworm (like to win to belong to and put down an earthworm greatly).The micro ecological system unit surface is plant (4), by 400 strains/m
2Mixed planting paspalum notatum and rye grass.Press 15L/m in the micro ecological system unit
3Active sludge (taking from Nanjing lock Jin Cun sewage work) carries out microbial inoculant and domestication to micro ecological system unit, lasts two weeks.Total system is made up of water distribution system, micro ecological system unit and water exhaust system.Micro ecological system unit is with operation continuously under the high hydraulic load of 100cm/d.
Embodiment 7 water treatment effects are as follows:
Under the hydraulic load of 100cm/d, the micro ecological system unit water outlet among the embodiment is limpid, to COD
Cr, NH
4 +-N, TN and TP average removal rate are respectively: 71.2%, 65.4%, 49.7%, 42.3%,
| Project | COD Cr | NH 4 +-N | TN | TP |
| Water inlet | 16.4～20.3 | 1.3～2.1 | 3.5～4.7 | 0.24～0.42 |
| Embodiment 7 water outlets | 4.1～6.7 | 0.2～1.2 | 1.4～2.8 | 0.13～0.27 |
Claims (9)
1. micro ecological system unit, adopt the eco-concrete material as shell, it is characterized in that from bottom to top being respectively in the housing (1) Artificial filtering material layer (2), artificial soil layer (3) and plant (4), the Artificial filtering material layer (2) of bottom is made up of by mixing or layer mode general filtrate and special filtrate, wherein general filtrate is that natural impact river sand and clay mix, special filter material layer is the material of iron content, aluminium or calcium, artificial soil is mixed by original soil and acute wood chip, the plant of upper strata plant (4) for removing nitrogen phosphorus.
2. micro ecological system unit according to claim 1 is characterized in that the degree of depth will satisfy the needs of selected plant root growth, generally between 40～100cm.
3. micro ecological system unit according to claim 1, it is characterized in that Artificial filtering material is made up of general filtrate and 1: 1 by volume～1: 5 ratio of special filtrate, the general filtrate in the Artificial filtering material is that natural impact river sand and 90: 10 by volume～95: 5 mixed of clay are formed.
4. according to claim 1 or 2 or 3 described micro ecological system units, it is characterized in that special filtrate for containing ironic hydroxide or ferric oxide or aluminiferous natural mineral matter, or the calcareous material for promoting that calcium phosphorus forms.
5. according to claim 1 or 2 or 3 described micro ecological system units, it is characterized in that artificial soil is to adopt original soil and 5: 1 by volume～10: 1 mixed of acute wood chip to form.
6. according to claim 1 or 2 or 3 described micro ecological system units, it is characterized in that micro ecological system unit is by 0.2～0.4kg/m
2Put into the soil animalcule.
7. according to claim 1 or 2 or 3 described micro ecological system units, it is characterized in that in the micro ecological system unit by 10～50L/m
3Add active sludge it is carried out microbial inoculant and domestication.
8. according to claim 1 or 2 or 3 described micro ecological system units, it is characterized in that it is Rush, rye grass, cattail or paspalum notatum that the plant of nitrogen phosphorus can be removed in the upper strata.
9. claim 1 or 2 or 3 application of described micro ecological system unit in water environment treatment.
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| CN102249418A (en) * | 2011-05-30 | 2011-11-23 | 中国科学院南京地理与湖泊研究所 | Antiscour ecological trench for interception of phosphorus loss |
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