CN110204153A - A kind of Artificial Mangroves wet land system of deep level of processing sewage - Google Patents
A kind of Artificial Mangroves wet land system of deep level of processing sewage Download PDFInfo
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- CN110204153A CN110204153A CN201910628476.2A CN201910628476A CN110204153A CN 110204153 A CN110204153 A CN 110204153A CN 201910628476 A CN201910628476 A CN 201910628476A CN 110204153 A CN110204153 A CN 110204153A
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- 239000010865 sewage Substances 0.000 title claims abstract description 77
- 241000120622 Rhizophoraceae Species 0.000 title claims abstract description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000005543 nano-size silicon particle Substances 0.000 claims abstract description 69
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 69
- 240000002044 Rhizophora apiculata Species 0.000 claims abstract description 67
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 35
- 239000004576 sand Substances 0.000 claims abstract description 34
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 17
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 13
- 238000012856 packing Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 101
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 238000000746 purification Methods 0.000 claims description 25
- 238000001556 precipitation Methods 0.000 claims description 24
- 244000069378 Aegiceras corniculatum Species 0.000 claims description 13
- 230000012010 growth Effects 0.000 claims description 8
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- 241001532056 Grapsidae Species 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 241000238121 Ocypodidae Species 0.000 claims description 5
- 244000061458 Solanum melongena Species 0.000 claims description 5
- 235000002597 Solanum melongena Nutrition 0.000 claims description 5
- 229910003978 SiClx Inorganic materials 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
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- 230000006872 improvement Effects 0.000 description 16
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
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- 238000012851 eutrophication Methods 0.000 description 3
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- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Hydroponics (AREA)
Abstract
The present invention provides a kind of Artificial Mangroves wet land systems of deep level of processing sewage comprising sequentially connected sedimentation basin, horizontal subsurface flow wetland bed, oxygenation is wetland bed, vertical-flow wetland bed, water-glass surface current are wetland bed；Nano silicon oxide gravel is filled in the sedimentation basin；The horizontal subsurface flow wetland bed, vertical-flow wetland bed bottom be equipped with packing layer and sea sand layer, described filler layer includes nano silicon oxide gravel layer, the sea sand layer is located at the top of nano silicon oxide gravel layer, and the horizontal subsurface flow wetland bed, vertical-flow wetland bed kind are implanted with mangrove；The wetland bed wall of the oxygenation is the coarse hair side of honeycomb, and the coarse hair side of honeycomb is equipped with the gravel block containing nano silicon oxide；" S " type dykes and dams are equipped in the water-glass surface current is wetland bed.Using technical solution of the present invention, the removal efficiency of the pollutants such as Water phosphorus is increased, further improves the degradation efficiency of denitrogenation dephosphorizing and poisonous and harmful substance, ensure that the deep purifying efficiency of sewage.
Description
Technical field
The invention belongs to restoration of the ecosystem, environment-friendly engineering and technical field of sewage more particularly to a kind of deep level of processing are dirty
The Artificial Mangroves wet land system of water.
Background technique
Currently, town sewage is collected by pipeline, river nearby is directly discharged into after concentrating on sewage treatment plant's purification, by river
Ocean is discharged into after collecting.According to national sewage comprehensive emission standard, even if tail water standard reaches highest level (level-one A standard),
Wherein total nitrogen content is still higher than 15mg.L-1, moreover, because Effluent criteria is to other hazardous trace elements, pathogenic microorganisms content
Without clearly stipulate that a large amount of tail water directly enters sea by river, easily making seashore sensitive biological cause a disease death, bio-diversity drop
It is low, to destroy marine ecosystems balance.But according to the purification techniques technique of current sewage treatment plant, except non-increasing a large amount of
Otherwise decontamination chemical substance is difficult to further increase tail water Effluent criteria, reduces pollutant load；And increased decontamination chemical object
Matter remains in water body, larger to the harm of natural ecosystems.In addition, also there is part of contaminated water not access sewerage system,
River is directly discharged into without any processing or enters sea, seriously affects water body environment.
Artificial marsh sewage treatment system is since the 1970s and 1980s in last century rises, purification effect low with its cost of investment
Rate is high, safeguards that the advantages that simple rapidly develops in the whole world, extensively foundation and the processing for industrial agricultural and sanitary sewage,
The nutritive salt such as nitrogen, phosphorus are effectively removed, meanwhile, plant puts the biochemical activities such as oxygen by root system, is also conducive to remove some micro
Harmful element and microorganism are very suitable to the deep purifying of face source sanitary sewage, eutrophication water or tail water.
Mangrove is the distinctive woody plant community, xylium in tropical and subtropical zone seashore intertidal zone, has high bio-diversity, Gao Sheng
Force of labor, the high characteristic for giving back rate and high de-agglomeration rate, Nutrient Cycle and energy flow are very fast, are tropical and subtropical zone seashores
The ecologically criticalarea of band can purify sewage, play an important role to the ecological balance for maintaining region following the line of the sea, with " marine forest "
Laudatory title also has considerable effect to entire global environment protection and bio-resource exploitation.Numerous studies are it was demonstrated that mangrove
Woods artificial swamp can be used as a kind of efficient, low cost, environment-friendly type advanced sewage treatment system, not only solve annual grass
The problem of this plant need to gather in every year, and because it is perennial evergreen xylophyta, growth is without obvious calendar variation, for dirt
Advanced water treatment has persistence, high efficiency and stability；In addition, the salt resistant character of mangrove, it is tidal also to solve coastal waters
River salinity is higher, common water plant is difficult to the problem of surviving；Meanwhile oxygen is put through filler, the mangrove root system in system
And the collective effect of microorganism, eliminate most of poisonous and harmful element in sewage, given full play to mangrove purification sewage,
The advantages of providing clean food to neritic organism, the mangrove in mangrove artificial wet land system is artificial growth, is facilitated
Maintain coastal waters Coastal Ecosystem balance.
But current tail water mostly directly enters river or coastal waters, and centre lacks biological deep purifying step, on the one hand may be because
Poisonous and harmful substance in tail water endangers Coastal Ecosystem (including primary mangrove vegetation), destroys the ecological balance, another party
Face is not but also function of the mangrove in terms of pollution purification, Offshore Ecology balance maintenance is brought into play completely.
Summary of the invention
Against the above technical problems, it the invention discloses a kind of Artificial Mangroves wet land system of deep level of processing sewage, mentions
The high degradation efficiency of denitrogenation dephosphorizing and poisonous and harmful substance improves pollution to ensure that the deep purifying efficiency of sewage
The degradation efficiency of object.
In this regard, the technical solution adopted by the present invention are as follows:
A kind of Artificial Mangroves wet land system of deep level of processing sewage comprising sequentially connected sedimentation basin, horizontal subsurface flow wetland
Bed, oxygenation is wetland bed, vertical-flow wetland bed, water-glass surface current are wetland bed；Nano silicon oxide gravel is filled in the sedimentation basin；
The horizontal subsurface flow wetland bed, vertical-flow wetland bed bottom be equipped with packing layer and sea sand layer, described filler layer includes nanometer
Silica gravel layer, the sea sand layer are located at the top of nano silicon oxide gravel layer, and the horizontal subsurface flow wetland bed, vertical current are wet
Groundbed kind is implanted with mangrove；The wetland bed wall of the oxygenation is the coarse hair side of honeycomb, and the coarse hair side of honeycomb is set
There is the gravel block containing nano silicon oxide；" S " type dykes and dams are equipped in the water-glass surface current is wetland bed.
Wherein, sedimentation basin: it is mainly used for removing the bulk rubbish and suspended matter in sewage.Horizontal subsurface flow wetland bed is mainly right
Sewage carries out preliminary purification, removal stink, soluble suspended matter and part nitrogen and phosphorous nutrient.Vertical-flow wetland bed mainly solves dirt
The deep purifying problem of water.The wetland bed abundant aeration oxygen replenishing for mainly solving preliminary purification sewage of oxygenation.Water-glass surface current wetland
The oxygen content of deep purifying water body is predominantly improved, while the habitat for the biology such as build birds.
It adopts this technical solution, the woody mangrove plant for selecting dirt-removing power strong establishes mangrove as wetland plant
Artificial swamp deep purification of waste water composite system.Face source sewage or tail water are filtered system or flow into sedimentation basin naturally, after precipitating
Sewage be introduced into horizontal drowned flow Mangrove Wetlands bed, it is wetland bed to enter oxygenation after preliminary purification, sufficiently expose enter after oxygen it is vertical
It flows Mangrove Wetlands and carries out deep purifying, be most discharged into river through horizontal surface stream wetland afterwards or directly enter sea.Undercurrent and vertical current
Mangrove Wetlands use new material as filler, i.e. the filler containing nano silicon oxide new material, improve Water
The removal efficiency of phosphorus；Meanwhile undercurrent and vertical current constructed wetland and the wetland bed complex configuration of oxygenation, it has built and a variety of has detested
Oxygen, aerobic, the facultative combined microenvironment such as aerobic, are suitable for the growth and breeding of various functional microorganisms, to ensure that sewage
Deep purifying efficiency.Extend residence time of the water outlet in the pool by establishing " S " type gentle slope dykes and dams in the pool to improve water body dissolution
Oxygen content, meanwhile, gentle slope and curved dykes and dams are suitable for that birds or other inhabiting for biology are looked for food, and solve the biologies such as aquatic bird and inhabit
The problem of ground；Finally, the tail water of oxygen content abundance is directly discharged into river through sluice or enters sea.
The set Mangrove Wetlands deep purification of waste water composite system, had both greatly reduced nitrogen phosphorus and the harmful substance in tail water
Content, increase the concentration of dissolved oxygen in water body, and have the function of that preferable landscape and bio-diversity maintain, gentle slope type
Naturally stream wetland increases beach area, and inhabiting to look for food and provide diversified habitat for aquatic bird, being very suitable to Guangdong,Hongkong and Macao is
To the estuary face source sewage in Coastal Areas of South China and tropical and subtropical zone area, omit sewage, sewage plant tail water or other in printing
The deep purifying (hereafter referred to collectively as sewage) of eutrophication water.
As a further improvement of the present invention, nanometer in the gravel of the nano silicon oxide gravel layer of the vertical-flow wetland bed
The content of silica is higher than horizontal subsurface flow wetland bed；The nano silicon oxide of the horizontal subsurface flow wetland bed, vertical-flow wetland bed
The lower section of gravel layer is equipped with gravel layer.Further, the nano silicon oxide gravel layer of the vertical-flow wetland bed is nano oxidized
The partial size of silicon gravel is less than horizontal subsurface flow wetland bed.By adopting the above technical scheme, the nitrogen phosphorus ligands in sewage are preferably improved
Efficiency.
As a further improvement of the present invention, nano oxidized in the horizontal subsurface flow wetland bed or vertical-flow wetland bed
The partial size of the gravel of silicon gravel layer is less than the partial size of the gravel of gravel layer.Further, the nanometer of the horizontal subsurface flow wetland bed
The mass percentage content of nano silicon oxide is 5-8% in the gravel of silica gravel layer；The nano oxygen of the vertical-flow wetland bed
The mass percentage content of nano silicon oxide is 10-20% in the gravel of SiClx gravel layer.
As a further improvement of the present invention, the bed body end of the horizontal subsurface flow wetland bed is equipped with preliminary net for collecting
The gathering ground of sewage after change；The width of gathering ground is 100-150cm.
As a further improvement of the present invention, the lower part or bottom of the horizontal subsurface flow wetland bed are equipped with water inlet；It is described
The top of horizontal subsurface flow wetland bed is equipped with water outlet；It is 5-10cm lower than the top of sea sand layer at the top of the pipeline of the water outlet.
As a further improvement of the present invention, in horizontal subsurface flow wetland bed, the grain size of gravel of nano silicon oxide gravel layer is
1-3cm, the depth of nano silicon oxide gravel layer are 15 ~ 30cm；The depth of gravel layer is 15 ~ 30cm, the grain of the gravel of gravel layer
Diameter is 3-5cm；The sea sand partial size of sea sand layer is 0.1-0.3cm, and the depth of sea sand layer is 30-50cm.
Further, the bed body of horizontal subsurface flow wetland bed is armored concrete or other waterproof material structures.Sedimentation basin
Sewage is flowed into through pipeline by drowned flow artificial wet land bed body bottom, is flowed out by bed body top, and gathering ground is arranged in bed body end, for receiving
Sewage after collecting preliminary purification.
As a further improvement of the present invention, in vertical-flow wetland bed, the grain size of gravel of nano silicon oxide gravel layer is
0.5-1cm, the depth of nano silicon oxide gravel layer are 15 ~ 30cm；The depth of gravel layer is 15 ~ 30cm, the gravel of gravel layer
Partial size is 1-3 cm；The sea sand partial size of sea sand layer is 0.1-0.3cm, and the depth of sea sand layer is 30-50cm.
As a further improvement of the present invention, the mangrove includes at least one of autumn eggplant, Aegiceras corniculatum, Bruguiera conjugata,
Density is 3-5/m2.It is further preferred that the plant of the mangrove away from be 0.3 for 0.3~0.6m, line-spacing~
0.6m.Planted mangrove preferably selects annual bagged seedlings, and the height of seedling is controlled in 50-60cm, and different mangroves can single or miscegenation.
The bed body of vertical-flow wetland bed is armored concrete or other waterproof material structures.Further, vertical-flow wetland
Bed bottom drain holes are uniformly distributed, and are located at bed body bottom, aperture 9-12cm, pitch of holes 10cm.Sewage after deep purifying is from wet
Groundbed bottom enters gathering ground, then flows into or water pump is pumped into water-glass surface current wetland.
Further, the water inlet pipe horizontal parallel of vertical-flow wetland bed body is laid on artificial swamp surface layer, and 3/4 bassets,
Water by tube bottom enter it is wetland bed, with sewage, unexposedly face is advisable burying pipeline depth, can appropriate adjustment.The end of water inlet pipe has
Valve, the spacing of Guan Yuguan about 20-30cm.There are many apertures for tube bottom distribution, and aperture is preferably 8-10mm, pitch of holes 10-
One connector valve is set at 15mm, every 10m, the problems such as replacement line clogging easy to repair, breakage.
As a further improvement of the present invention, mangrove grows half a year to 1 year, and control mangrove height is lower than 2.5
M makes its lateral growth, increases tree crown coverage.
Mangrove can all be cut down, and replace sea sand and filler using every 15-20, plant mangrove again
Plant.The mangrove of felling makees green manure after can crushing fermentation, also can be directly used for easy garden landscape production；More swap out
After the processing such as filler is sterilized, mixes, it can be used for road surfacing or flowers and plants plantation.
As a further improvement of the present invention, the horizontal subsurface flow wetland bed, vertical-flow wetland bed depth be 80 ~
150cm。
As a further improvement of the present invention, the horizontal subsurface flow wetland bed, vertical-flow wetland bed have put crab class in a suitable place to breed and have lived in caves
Animal.Further, crab class troglobite is at least one of Grapsidae and Ocypodidae.It is further preferred that crab is put in a suitable place to breed
Density is 2-4/m2, sex ration is not less than 2:1.Wherein, after mangrove growth half a year to 1 year, in mangrove planting soil
Layer manually puts crab class troglobite in a suitable place to breed.Wherein Grapsidae includes but is not limited to sesarma dehaani, Sesarma plicata etc..The ghost crab
Section includes but is not limited to arc side fiddler crab, geneva fiddler crab etc..Each department preferably select local primary sociales.Using this technical side
Case manually puts the troglobite based on Ocypodidae and Grapsidae in a suitable place to breed, on the one hand solves the problems, such as Wetland clogging, on the other hand,
The habit of living in caves of crab class can increase wetland bed interior oxygen content, make up the deficiency that mangrove root system puts oxygen, promote nitrogen and phosphorus
The decomposition of salt and poisonous and harmful substance, to improve the degradation efficiency of pollutant.
As a further improvement of the present invention, water-glass surface current it is wetland bed in, the dykes and dams are in the approximately level 30-50cm
The gradient be 10 ° -20 °；The width of the dykes and dams is not less than 1 m, and the dykes and dams are higher than water surface 10-50cm.The wherein dykes and dams
Any plant is not planted, retains naked beach.
As a further improvement of the present invention, the wetland bed periphery plantation height of the water-glass surface current is short less than 2m
Plant plants arbor on embankment.Further, at least one of periphery plantation reed, Lao Shu le, sea paint, Aegiceras corniculatum, sea paint,
The plant of Aegiceras corniculatum is away from being 0.5~0.7m for 0.3~0.5m, line-spacing；Reed, Lao Shu le cuttage, spacing in the rows be 0.3~
0.4m, line-spacing are 0.2~0.3m.Further, arbor includes at least one of horse-tail and China tree, and arbor is every 10-15
M kind plants one plant；
Further, the wetland bed depth of the water-glass surface current is 3 ~ 5m, and surrounding is common pool base, and the gradient is greater than 60 °.
As a further improvement of the present invention, the wetland bed gradient of the oxygenation is 45 ° -60 °；The coarse hair of honeycomb
Face is laid with the gravel block of the nano silicon oxide in irregular shape containing 10 ~ 20% mass percents at random；The oxygenation wetland
The honeycomb of the wall of bed is depth 5-15mm, diameter 5-10cm, spacing 10-20cm；Further, the partial size 5- of the gravel block
8cm, the gravel block are every square metre of setting 10-15 block.
As a further improvement of the present invention, the wetland bed top of the oxygenation is equipped with the level trough of depth 5-10cm；Water
Oxygenation bed bed body is vertically flowed through from level trough.The water entering surface of level trough and side are above out water surface 5-10cm, to control water flow
Direction.The preferably less than freeboard of drowned flow artificial wet land gathering ground, in order to which water flow is under the effect of gravity in wetland bed upper inflow
Vertical-flow wetland；If the wetland bed top of oxygenation is higher than the freeboard of drowned flow artificial wet land gathering ground, the water of gathering ground is needed
It is extracted by water pump to the wetland bed top of oxygenation.
Further, the difference in height of the wetland bed bed body of the oxygenation be 1 ~ 3m, 45 ° ~ 60 ° of the gradient.
The wetland bed abundant aeration oxygen replenishing for mainly solving preliminary purification sewage of oxygenation, while also increasing the landscape effect of the technique
Fruit.Bed body can be reinforced concrete wall, and wall is the coarse hair side of honeycomb and lays gravel block, and top is level trough, preferably less than
The freeboard of drowned flow artificial wet land gathering ground, in order to which water flow is under the effect of gravity in wetland bed upper inflow vertical-flow wetland；
If the wetland bed top of oxygenation be higher than drowned flow artificial wet land gathering ground freeboard, the water of gathering ground need to be extracted by water pump to
The wetland bed top of oxygenation.
As a further improvement of the present invention, the sedimentation basin includes the first stage precipitation tank being sequentially connected and two-stage precipitation
Pond, the first stage precipitation tank are filled with gravel, 1/3 ~ 3/4 depth of gravel pack to first stage precipitation tank；The second-level settling pond
It is interior to be filled with nano silicon oxide gravel；The depth of cracking closure of the nano silicon oxide gravel is deep for 3/4 no more than second-level settling pond
Degree.
As a further improvement of the present invention, the partial size of the gravel in first stage precipitation tank is 3-5cm, in second-level settling pond
The partial size of nano silicon oxide gravel is 1-3cm, and the mass percentage content of nano silicon oxide is 1 in the nano silicon oxide gravel
~5%。
Further, the width of the first stage precipitation tank is 100 ~ 500cm, depth 300-600cm, wherein gravel pack
To 1/2 depth of first stage precipitation tank.
Further, the top of the first stage precipitation tank is equipped with water inlet pipe, and the lower part of the first stage precipitation tank is equipped with and the
The connecting tube of two sedimentation basins connection, the connecting tube and water inlet pipe are located at two opposite sides of first stage precipitation tank.Further,
The internal diameter of the water inlet pipe is 9-30cm；The connecting tube is multiple, spacing 10-20cm between the pipe of connecting tube；Further,
The internal diameter of the connecting tube is 9-12cm；
Further, the width of the second-level settling pond is 100 ~ 500cm, depth 300-500cm；In the second-level settling pond
Filled with nano silicon oxide gravel；The partial size of the nano silicon oxide gravel is 1-3cm, nanometer in the nano silicon oxide gravel
The mass percentage content of silica is 1 ~ 5%；The depth of cracking closure of the nano silicon oxide gravel is no more than second-level settling pond
3/4 depth；The top of the second-level settling pond is equipped with outlet pipe.The internal diameter of the outlet pipe is 9-20cm.
Further, the outlet pipe of second-level settling pond is at top 1/4, internal diameter 9-20cm.Band is installed convenient for the later period
The outlet conduit of valve, so that sewage extracts with water pump or flow into naturally under the effect of gravity current wetland bed.
By adopting the above technical scheme, sewage enters first stage precipitation tank preliminary sedimentation from top, enters second level through bottom pipe
By entering drowned flow artificial wet land after sedimentation basin deep layer precipitating.In addition sedimentation basin bottom sides are installed a flowing water Valve again and are used for clearly
Sewage or mud are drained when silt.
Further, the natural horizontal artificial wetland surrounded using bending sprawling dykes and dams, is increased the water body residence time, made
Dissolved oxygen content rises, to ensure sewage discharge to nature river or the ecological security of coastal waters seashore.
Compared with prior art, the invention has the benefit that
First, technical solution of the present invention increases the dirts such as Water phosphorus using nano silicon oxide chad is contained as filler
The removal efficiency of object, while undercurrent and vertical current constructed wetland and the wetland bed complex configuration of oxygenation are contaminated, has built and a variety of has detested
Oxygen, aerobic, the facultative combinations such as aerobic small microenvironment, be suitable for the growth and breeding of various functional microorganisms, further improve de-
The degradation efficiency of nitrogen dephosphorization and poisonous and harmful substance, to ensure that the deep purifying efficiency of sewage.
Second, technical solution of the present invention is conducive to sewage purification as constructed wetland plant using xylophyta mangrove
Stability, duration and the high efficiency of efficiency also solve the problems, such as that annual wetland herbaceous macrophytes need to gather in.Plant growth
Half a year to 1 year promotes lateral growth, increases tree crown coverage, improve purification efficiency by controlling mangrove height.And
Mangrove planting soil layer manually puts the troglobite based on Grapsidae and Ocypodidae in a suitable place to breed, it is possible to reduce Wetland clogging increases
Wetland soil oxygen content is conducive to improve purification function.
Third, system of the invention are inhabited with occupied area by the biologies such as small, deep purifying high-efficient, landscape and birds
The advantages that ground is restored has given full play to Mangrove Wetlands in deep purifying, for the biology in coastal waters and provides clean food, maintenance
The advantages of bio-diversity etc., is very suitable to Guangdong,Hongkong and Macao or even South China and the leakage of tropical and subtropical zone area estuary
Deep purifying processing of the purification of sewerage, the deep purifying of sewage treatment plant tail water and other eutrophication waters etc..
Detailed description of the invention
Fig. 1 is a kind of process flow diagram of the Artificial Mangroves wet land system of deep level of processing sewage of the present invention.
Fig. 2 is the structural schematic diagram of the sedimentation basin of an embodiment of the present invention.
Fig. 3 is the mangrove drowned flow artificial wet land bed structure schematic diagram of an embodiment of the present invention.
Fig. 4 is the wetland bed structural schematic diagram of the oxygenation of an embodiment of the present invention.
Fig. 5 is the wetland bed structural schematic diagram of the mangrove artificial vertical stream of an embodiment of the present invention.
Fig. 6 is the structural schematic diagram of the vertical-flow wetland water inlet line of an embodiment of the present invention.
Fig. 7 is the planar structure schematic diagram of the water-glass surface current wetland of an embodiment of the present invention.
Fig. 8 is the structural schematic diagram of the gentle slope type dykes and dams of an embodiment of the present invention.
Appended drawing reference includes: 1- sedimentation basin, and 2- mangrove drowned flow artificial wet land bed, 3- oxygenation is wetland bed, and 4- mangrove is hung down
Direct current constructed wetland bed, 5- water-glass surface current are wetland bed；
11- first stage precipitation tank, 12- second-level settling pond, 13- gravel, 14- contain the gravel of nano silicon oxide, 15- water inlet pipe, 16-
Outlet pipe, 17- desilting valve door；
21- gravel layer, 22- nano silicon oxide gravel layer, 23- sea sand layer, 24- mangrove, 25- water inlet gathering ground, 26- water outlet
Gathering ground；
The coarse hair side of 31- honeycomb, 32- contain the gravel block of nano silicon oxide, 33- level trough；
41- vertical current gravel layer, 42- vertical current nano silicon oxide gravel layer, 43- vertical current sea sand layer, 44- mangrove, 45-
Vertical outflow water gathering ground, 46- water inlet pipe, 47- outlet pipe, the hole 48-；
51- gentle slope type dykes and dams, 52- lower vegetation, the 53- water surface.
Specific embodiment
Preferably embodiment of the invention is described in further detail below.
A kind of Artificial Mangroves wetland deep purifying composite system, as shown in Figure 1, including sedimentation basin 1, mangrove undercurrent people
Work is wetland bed 2, oxygenation is wetland bed 3, mangrove vertical current constructed wetland bed 4, water-glass surface current wetland bed 5.Sewage successively passes through
It flows through above-mentioned bed body to be handled, is finally discharged into river or sea.
It is specifically described below.
1, sedimentation basin: it is mainly used for removing the bulk rubbish and suspended matter in sewage.As shown in Fig. 2, sedimentation basin 1 is divided to two
Grade, including first stage precipitation tank 11 and second-level settling pond 12.First stage precipitation tank 11 100-500cm of width, depth 300-600cm are put
The gravel 13 for entering partial size 3-5cm is filled to 1/2 depth；Water inlet line (9-30cm) is installed at the top of first stage precipitation tank 11, water inlet pipe
One side bottom of road opposite has pipeline (9-12cm, pipe between spacing 10-20cm), and be connected second-level settling pond 12 with second-level settling pond 12
100-500cm of width, depth 300-500cm, with the gravel 14(partial size 1-3cm containing nano silicon oxide) filling to 3/4 deep
At degree, wherein nano silicon oxide two degrees be 1-5%.The second-level settling pond 12 is adjacent with first stage precipitation tank 11
Side is equipped with water inlet pipe 15, reserves outlet pipe hole (9-20cm) at top 1/4, installs the water outlet with valve convenient for the later period
Pipe 16, so that sewage extracts with water pump or flow into naturally under the effect of gravity current wetland bed.Arrow is water (flow) direction in figure, dirty
Water enters 11 preliminary sedimentation of first stage precipitation tank from top, red by entering after bottom pipe enters 12 deep layer of second-level settling pond precipitating
Woods drowned flow artificial wet land bed 2.In addition first stage precipitation tank 11 and the bottom sides of second-level settling pond 12 install a desilting valve again
Door 17 is used to drain sewage or mud when dredging.
2, mangrove drowned flow artificial wet land bed: as shown in figure 3, the depth of the mangrove drowned flow artificial wet land bed 2 is 80-
150cm, bed body bottom are equipped with packing layer and sea sand layer 23, and described filler layer includes gravel layer 21 and nano silicon oxide gravel layer
22, the sea sand layer 23 is located at the top of nano silicon oxide gravel layer 22, and the gravel layer 21 is located at nano silicon oxide gravel layer
22 lower section.Described 2 kinds of mangrove drowned flow artificial wet land bed are implanted with mangrove 24.The mangrove drowned flow artificial wet land bed 2
Bed body front end be equipped with for the gathering ground 25 that intakes；The bed body end of the mangrove drowned flow artificial wet land bed 2 is equipped with for receiving
The water outlet gathering ground 26 of sewage after collecting preliminary purification.
The bed body mainly carries out preliminary purification, removal stink, soluble suspended matter and part nitrogen and phosphorous nutrient to sewage.Bed
Body is armored concrete or other waterproof material structures, and bottom is laid with gravel (partial size 3-5cm) 20cm, re-lays containing nano oxidized
Gravel (partial size 1-3cm) 30cm of silicon (5-8%) is laid with sea sand (partial size 0.1-0.3cm) 30-50cm above, plants the autumn respectively
The mangroves such as eggplant, Aegiceras corniculatum, Bruguiera conjugata (preferably select local initial species, about 3-5/m of density2).The sewage of sedimentation basin is through pipeline
(close to ground, aperture 9-12cm, pitch of holes 10cm) is flowed by drowned flow artificial wet land bed body bottom, by bed body top outflow (pipe
Than 5-10cm, aperture 9-12cm, pitch of holes 10cm low at the top of sea sand layer at the top of road), gathering ground is arranged in bed body end, and (width is about
100-150cm), for collecting the sewage after preliminary purification.
3, oxygenation is wetland bed: the bed body mainly solves the abundant aeration oxygen replenishing of preliminary purification sewage, while increasing the technique
Landscape effect.As shown in figure 4, the bed body of oxygenation wetland bed 3 is height 1-3m, 45 ° -60 ° of the gradient of reinforced concrete wall, wall
For the coarse hair side 31 of honeycomb, honeycomb is depth 5-15mm, diameter 5-10cm, spacing 10-20cm, random laying partial size 5-8cm
Gravel block 32 in irregular shape containing nano silicon oxide, the mass percentage content of nano silicon oxide are 10 ~ 20%, gravel
Every square metre of setting 10-15 block of block.The wetland bed top of oxygenation is the level trough 33 of a depth 5-10cm, and water entering surface and side are high
In water surface 5-10cm out, to control water (flow) direction, the preferably less than freeboard of drowned flow artificial wet land gathering ground, in order to which water flow exists
In wetland bed upper inflow vertical-flow wetland under gravity；If the wetland bed top of oxygenation is higher than drowned flow artificial wet land gathering ground
Freeboard, then the water of gathering ground need to be extracted by water pump to the wetland bed top of oxygenation.
4, mangrove vertical current constructed wetland bed: the bed body mainly solves the problems, such as the deep purifying of sewage.As shown in figure 5,
The bed body of mangrove vertical current constructed wetland bed 4 be armored concrete or other waterproof material structures,
The bottom of the mangrove vertical current constructed wetland bed 4 is equipped with vertical current packing layer and vertical current sea sand layer 43, described to hang down
Direct current packing layer includes vertical current gravel layer 41 and vertical current nano silicon oxide gravel layer 42, and the vertical current sea sand layer 43 is located at
The top of vertical current nano silicon oxide gravel layer 42, the vertical current gravel layer 41 are located at vertical current nano silicon oxide gravel layer 42
Lower section.Described 4 kinds of mangrove vertical current constructed wetland bed are implanted with mangrove 44.The mangrove vertical current constructed wetland bed
4 bed body end is equipped with the vertical outflow water gathering ground 45 for collecting the sewage after preliminary purification.
The depth of the mangrove vertical current constructed wetland bed 4 is 80-150cm, and bed body bottom is laid with the gravel of partial size 1-3cm
Stone 10cm re-lays stone grain (partial size 0.5-1cm) 40cm containing nano silicon oxide (10-20%), is laid with sea sand (partial size above
0.1-0.3cm) 30-50cm, the mangroves such as plantation autumn eggplant, Aegiceras corniculatum, Bruguiera conjugata (preferably select local initial species, density about 10-15
/ m2)).The bottom drain holes of mangrove vertical current constructed wetland bed 4 are uniformly distributed, that is, are located at bed body bottom, aperture 9-
12cm, pitch of holes 10cm, the sewage after deep purifying carry out vertical outflow water gathering ground 45, width about 100- from wetland bed bottom
Then 150cm is flowed into or water pump is pumped into natural horizontal stream wetland.
In mangrove vertical current constructed wetland bed 4, water inlet pipe 46(12-15cm is closed at one end) horizontal parallel is laid on people
Work wetland surface layer, 3/4 basseting, (note: water is entered wetland bed by tube bottom, and with sewage, unexposedly face is burying pipeline depth
Preferably, can appropriate adjustment), there are valve, the spacing of Guan Yuguan about 20-30cm in the end of pipe.Mangrove vertical current constructed wetland bed 4
Lower part is equipped with outlet pipe 47.As shown in fig. 6, there are many 48 aperture 8-10mm of hole, pitchs of holes for the tube bottom distribution of water inlet pipe 46
One connector valve is set at 10-15mm, every 10m, the problems such as replacement line clogging easy to repair, breakage.
After mangrove grows half a year to 1 year, manually put in a suitable place to breed in mangrove planting soil layer with Grapsidae (such as anodontia phase
Hand crab, Sesarma plicata etc.) and Ocypodidae (such as arc side fiddler crab, geneva fiddler crab) based on troglobite (each department are suitable
The local primary sociales of selection).Crab breeding density is 2-4/m2, sex ration is not less than 2:1.
Autumn eggplant, Bruguiera conjugata, Aegiceras corniculatum plant away from being 0.3~0.6m for 0.3~0.6m, line-spacing.Planted mangrove preferably selects
Annual bagged seedlings are selected, different mangroves can single or miscegenation.After mangrove plantation survives half a year to 1 year, plant height is controlled, is made
Height is lower than 2.5 m, and branches and leaves is promoted laterally to develop.
Every 15-20, mangrove is all cut down, and replaces sea sand and filler, plants mangrove again.Felling
Mangrove makees green manure after can crushing fermentation, also can be directly used for easy garden landscape production；The filler more to swap out is sterilized,
After the processing such as mixing, it can be used for road surfacing or flowers and plants plantation.
It is also as above to be arranged for mangrove drowned flow artificial wet land bed.
5, natural horizontal stream is wetland bed: predominantly improving the oxygen content of deep purifying water body, while it is raw to build birds etc.
The habitat of object.As shown in fig. 7, the depth of natural horizontal stream wetland bed 5 is 3-5 m, surrounding is common pool base, and the gradient is greater than
60 °, the lower vegetations 52(height controls such as reed, Lao Shu le, extra large paint, Aegiceras corniculatum are planted within 2 m in periphery) based on, on embankment
Suitably some high megaphanerophytes, such as horse-tail, China tree can be planted by mongrel.Sea paint, Aegiceras corniculatum plant away from for 0.3~0.5m,
Line-spacing is 0.5~0.7m；Reed, Lao Shu le directly fine can be inserted, and spacing in the rows is 0.3~0.4m, line-spacing is 0.2~0.3m；Tall and big Qiao
Wood generally plants one plant every 10-15 m kind.
Gentle slope type dykes and dams 51 are equipped in natural horizontal stream wetland bed 5, when main function extends stop of the water flow in wetland
Between, to increase Dissolved Oxygen in Water content.Dykes and dams 51 are " S " type, and 51 width of dykes and dams is not less than 1 m, and expose the surface 53 10-50cm,
And the gradient for being located at dykes and dams 51 within 53 or less 30-50cm of the water surface is 10 ° -20 °, does not plant any plant, retains naked beach.
Embodiment 1
Artificial Mangroves wetland deep purifying composite system as shown in Figure 1 is established in the river mouth for having sewage to enter, tail water is through water
Pump pump is to sedimentation basin, and the structure of sedimentation basin is as shown in Fig. 2, to sequentially enter mangrove drowned flow artificial as shown in Figure 3 through pipeline wet
Groundbed, the mangrove vertical-flow wetland bed that oxygenation as shown in Figure 4 is wetland bed, as shown in Figure 5, vertical fluidized bed as shown in FIG. 6
After body water inlet pipeline system for water, water-glass surface current wetland as shown in Figure 7 carry out deep purifying, enter sea through sluice.
Precipitating bottom of pond portion is integrally higher by 10cm at the top of mangrove drowned flow artificial wet land bed.The long * wide * of first stage precipitation tank is a height of
300cm*200cm*500cm, is put into gravel (partial size 3-5cm) 250cm, sewage by entering at the top of sedimentation basin, through bottom pipe (
9cm, spacing 10cm), into two-stage precipitation bottom of pond portion；The long a height of 300cm*200cm*400cm of * wide * of second-level settling pond, with containing
Nano silicon oxide (5%) gravel (partial size 1-3cm) filling to 300cm depth, through top outlet pipe (at height 300cm, water pipe
It is wetland bed 10cm) to flow into trend naturally under the effect of gravity.
Current wetland bed is reinforced concrete structure, the long a height of 1000cm*200cm*120cm of * wide *), from bottom to top successively
Gravel (partial size 1-3cm) 30cm, sea sand (the partial size 0.1- for inserting gravel (partial size 3-5cm) 20cm, containing nano silicon oxide (5%)
0.3cm) 50cm plants Bruguiera conjugata (i.e. 5 plants/m by the seeding row spacing of 40cm*50cm2).Gathering ground (width is arranged in bed body end
100cm), for collecting the sewage after preliminary purification.
Oxygenation is wetland bed to be located next to current wetland bed exhalant region, and water outlet is pumped by water pump to the wetland bed bed body of oxygenation, top
Portion is level trough (long * wide * high, 1000cm*20cm*20cm), and water vertically flows through oxygenation bed bed body from level trough, and bed body is height
200cm, 45 ° of the gradient of reinforced concrete wall, wall are that (honeycomb is depth 5mm, diameter 5cm, spacing to the coarse hair side of honeycomb
10cm), lay the partial size 5cm gravel block in irregular shape containing 10% nano silicon oxide at random (every square metre is arranged 15 pieces).
The gathering ground bottom of the system oxygenation bed is higher than 10cm at the top of vertical-flow wetland bed, and it is wet that water flow is flowed into vertical current by gathering ground naturally
Ground bed body.
Vertical current bed body is armored concrete (the long a height of 1000cm*200cm*120cm of * wide *), is successively laid with from bottom to top
Gravel (partial size 1-3cm) 10cm, stone grain (partial size 0.5-1cm) 40cm, sea sand (the partial size 0.1- for containing nano silicon oxide (20%)
0.3cm) 50cm plants Aegiceras corniculatum (i.e. 5 plants/m by the seeding row spacing of 30cm*30cm2) plantation Aegiceras corniculatum (11/m2)).Vertical current
The pipeline water distribution system of system is the PVC pipeline composition of 12cm, one end with closing valve, and duct bottom has aperture 8mm, hole
The aperture of spacing 10mm, 4 pipelines are laid in wetland surface, and every bottom of the tube about 3cm is embedded to sea sand, and sewage is avoided to expose ground
Table causes the problems such as mosquito.Sewage is discharged into width through bed body bottom drain holes (aperture 9cm, pitch of holes 10cm) and is after deep purifying
The gathering ground of 100cm, subsequently into water-glass surface current wetland.
Water-glass surface current wetland is deep water pond (the long a height of 1000cm*300cm*300cm of * wide *), and surrounding is the common pool
Base, the gradient are greater than 60 ° of common pool base, and surrounding is by spacing in the rows 0.3m, 0.5 kind of plant Aegiceras corniculatum of line-spacing (height control is within 2 m)
" S " type dykes and dams are built in the pool, dykes and dams width 1m is higher than water surface 20cm, and the gradient is 10 ° within approximately level 50cm, such as Fig. 8 institute
Show, does not plant any plant.After sewage is fully oxidized in the pool, enter sea through sluice.
After Bruguiera conjugata and Aegiceras corniculatum in undercurrent and vertical-flow wetland are grown 1 year, sesarma dehaani and arc are launched in bed body
Side fiddler crab, crab breeding density are 3/m2, sex ration 2:1；Meanwhile after plant growth 1 year, arranged by trimming terminal bud etc.
Applying makes plant height lower than 2.5 m, to promote branches and leaves laterally to develop.
It is 60 m in hydraulic loading3 d-1, (unit area hydraulic loading is under the residence time about 3 days operating parameters
0.286 m3 d-1 m-2), by nearly operation in 3 years (25 DEG C of average annual temperature), into oxygen in water less than 1 mg L-1, water outlet
In dissolved oxygen content it is much in 6.0 mg L-1, in influent CODcr、BOD5、TN、NH3- N, TP, SP mean concentration be respectively
180 mg L-1、100 mg L-1、25 mg L-1、18 mg L-1、8 mg L-1、5 mg L-1Under conditions of, through compound wetland system
After system deep purifying, COD in water outletcr、BOD5、TN、NH3- N, TP, SP mean concentration be respectively 15 mg L-1、5 mg L-1、
2 mg L-1、1mg L-1、0.3 mg L-1、0.1 mg L-1, remove BOD5、NH3- N is III class standard of surface water, and other water quality refer to
It is designated as II class standard of surface water, on the whole, effluent quality is better than III class standard of surface water.After wetland is run 15 years, replacement is filled out
Material, and mangrove is cut down, it plants again.
Comparative example 1
Sewage treatment is carried out using the single mangrove artificial swamp of the prior art.
The mangrove drowned flow artificial wet land (length × width × height, 9m*3m*1.0m) that early period establishes is 5 m in hydraulic loading3
d-1, (unit area hydraulic loading is 0.062 m under the residence time about 3 days operating parameters3 d-1 m-2), by nearly 3 years fortune
Row, it is very low into oxygen in water, mostly less than 1 mg L-1, the dissolved oxygen content in water outlet is much in 5.0 mg L-1,
COD、BOD5、TN、NH3- N, TP, SP mean concentration be respectively 180 mg L-1、100 mg L-1、15 mg L-1、10 mg L-1、5 mg L-1、3 mg L-1Under conditions of, COD, BOD in water outlet5、TN、NH3- N, TP, SP mean concentration be respectively 25 mg
L-1、10 mg L-1、2 mg L-1、1.5mg L-1、0.5 mg L-1、0.3 mg L-1。
Compared with Example 1, under the conditions of high water-base fluid, the Mangrove Wetlands advanced purification technology technique of embodiment 1
Purification efficiency be much higher than single mangrove drowned flow artificial wet land so that effluent quality be better than III class standard of surface water.
Comparative example 2
As a comparison case with level stream and vertical current integrated constructed wetland.
2016, a set of level stream and vertical current integrated constructed wetland were invented by certain domestic Environmental Technology AS,
The systematic vertical artificial wetland is set to above horizontal drowned flow artificial wet land, so that the occupied area of two bed bodies is only one
The area of bed, compared to vertical current and horizontal drowned flow artificial wet land Cascade System, occupied area reduces half；Wetland plant used
The predominantly annual herb plants such as canna, calamus, reed, which is mainly used for rural domestic sewage treatment, in waterpower
Unit demand area hydraulic loading is 0.347-0. 694m3 d-1 m-2Under the conditions of, final outflow water water quality can " urban wastewater treatment
Factory's pollutant emission standard (GB18918-2002) " in level-one B standard.
The system of the present embodiment 1 is compared with the comparative example as it can be seen that the sewage that difference essentially consists in the present embodiment 1 may be implemented
Deep purifying, water outlet can reach better than III class standard of surface water, and deep purifying effect is much higher than the integrated Manual moist of comparative example 1
Ground system.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention
Protection scope.
Claims (10)
1. a kind of Artificial Mangroves wet land system of deep level of processing sewage, it is characterised in that: it include sequentially connected sedimentation basin,
Horizontal subsurface flow wetland bed, oxygenation is wetland bed, vertical-flow wetland bed, water-glass surface current are wetland bed；
Nano silicon oxide gravel is filled in the sedimentation basin；
The horizontal subsurface flow wetland bed, vertical-flow wetland bed bottom be equipped with packing layer and sea sand layer, described filler layer includes
Nano silicon oxide gravel layer, the sea sand layer are located at the top of nano silicon oxide gravel layer, the horizontal subsurface flow wetland bed, vertical
It flows wetland bed kind and is implanted with mangrove；
The wetland bed wall of the oxygenation is the coarse hair side of honeycomb, and the coarse hair side of honeycomb is equipped with containing nano silicon oxide
Gravel block；
" S " type dykes and dams are equipped in the water-glass surface current is wetland bed.
2. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 1, it is characterised in that: described vertical
The content for flowing nano silicon oxide in the gravel of wetland bed nano silicon oxide gravel layer is higher than horizontal subsurface flow wetland bed；It is described to hang down
The partial size of the nano silicon oxide gravel of the wetland bed nano silicon oxide gravel layer of direct current is less than horizontal subsurface flow wetland bed；The water
Flat current wetland bed, vertical-flow wetland bed nano silicon oxide gravel layer lower section be equipped with gravel layer.
3. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 2, it is characterised in that: the level
In current wetland bed or vertical-flow wetland bed, the partial size of the gravel of the nano silicon oxide gravel layer is less than the gravel of gravel layer
Partial size；The mass percentage content of nano silicon oxide is in the gravel of the nano silicon oxide gravel layer of the horizontal subsurface flow wetland bed
5-8%；The mass percentage content of nano silicon oxide is in the gravel of the nano silicon oxide gravel layer of the vertical-flow wetland bed
10-20%。
4. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 3, it is characterised in that: horizontal drowned flow
In wetland bed, the grain size of gravel of nano silicon oxide gravel layer is 1-3cm, and the depth of nano silicon oxide gravel layer is 15 ~ 30cm；Gravel
The depth of rock layers is 15 ~ 30cm, and the partial size of the gravel of gravel layer is 3-5cm；The sea sand partial size of sea sand layer is 0.1-0.3cm, sea
The depth of layer of sand is 30-50cm；
In vertical-flow wetland bed, the grain size of gravel of nano silicon oxide gravel layer is 0.5-1cm, the depth of nano silicon oxide gravel layer
For 15 ~ 30cm；The depth of gravel layer is 15 ~ 30cm, and the partial size of the gravel of gravel layer is 1-3 cm；The sea sand partial size of sea sand layer is
0.1-0.3cm, the depth of sea sand layer are 30-50cm；
The bed body end of the horizontal subsurface flow wetland bed is equipped with the gathering ground for collecting the sewage after preliminary purification；
The mangrove includes at least one of autumn eggplant, Aegiceras corniculatum, Bruguiera conjugata, and density is 3-5/m2。
5. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 1, it is characterised in that: the level
Current wetland bed, vertical-flow wetland bed have put crab class troglobite in a suitable place to breed；Crab class troglobite be in Grapsidae and Ocypodidae extremely
Few one kind.
6. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 1, it is characterised in that: horizontal surface
It flows in wetland bed, the dykes and dams are 10 ° -20 ° in the gradient in approximately level 30-50cm；The width of the dykes and dams is not less than 1
M, the dykes and dams are higher than water surface 10-50cm.
7. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 1, it is characterised in that: the oxygenation
The wetland bed gradient is 45 ° -60 °；
The coarse hair side of honeycomb is laid with gravel block at random, and the gravel block contains the nano oxygen of 10 ~ 20% mass percents
SiClx；The honeycomb of the wetland bed wall of the oxygenation is depth 5-15mm, diameter 5-10cm, spacing 10-20cm.
8. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 1, it is characterised in that: the precipitating
Pond includes the first stage precipitation tank being sequentially connected and second-level settling pond, and the first stage precipitation tank is filled with gravel, gravel pack to one
1/3 ~ 3/4 depth of grade sedimentation basin；
Nano silicon oxide gravel is filled in the second-level settling pond；The depth of cracking closure of the nano silicon oxide gravel be no more than
3/4 depth of second-level settling pond.
9. the Artificial Mangroves wet land system of deep level of processing sewage according to claim 8, it is characterised in that: level-one precipitating
The partial size of gravel in pond is 3-5cm, and the partial size of the nano silicon oxide gravel in second-level settling pond is 1-3cm, the nano oxygen
The mass percentage content of nano silicon oxide is 1 ~ 5% in SiClx gravel；
The width of the first stage precipitation tank is 100 ~ 500cm, depth 300-600cm, wherein gravel pack to first stage precipitation tank
1/2 depth.
10. the Artificial Mangroves wet land system of deep level of processing sewage described in any one, feature exist according to claim 1 ~ 9
In: mangrove grows half a year to 1 year, and control mangrove height is lower than 2.5 m, makes its lateral growth, increases tree crown covering
Degree；Every 15-20, mangrove is all cut down, and replace sea sand and filler, plant mangrove again.
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Cited By (1)
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| CN111056700A (en) * | 2019-12-05 | 2020-04-24 | 上海市建工设计研究总院有限公司 | Novel composite wetland system for repairing micro-polluted water body |
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