CN204981534U - Ecological conversion bed of mud - Google Patents
Ecological conversion bed of mud Download PDFInfo
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- CN204981534U CN204981534U CN201520430048.6U CN201520430048U CN204981534U CN 204981534 U CN204981534 U CN 204981534U CN 201520430048 U CN201520430048 U CN 201520430048U CN 204981534 U CN204981534 U CN 204981534U
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Abstract
The utility model provides an ecological conversion bed of mud, includes cell body, planting layer, supporting layer, conversion dielectric layer, barrier layer, joins in marriage mud system, evacuation floral tube and changes a bed plant. Mud is through the pipeline and join in marriage the ecological conversion bed of mud system cycle nature injection income, can degrade and change through change dielectric layer, microorganism and conversion bed plant roots's comprehensive function. The construction can flow back to sewage treatment plant at the peripheral conversion bed exhaust clear water of sewage treatment plant, but distance discharge clear water retrieval and utilization far away is recycled in the dilution of dehydration mud. The utility model discloses a device turns into high -energy and high added value's ecological material with mud, realizes the virtuous circle of " resources recovery, energy conversion, environment friendly, ecological nature ".
Description
Technical field
The utility model relates to a kind of mud purification treatment technology, and being specifically related to, by mud ecological conversion bed, also sorption enhanced is decomposed in sludge digestion is the device and method of biomass.
Background technology
Mud is the solid precipitation material produced by water and sewage treatment process.Containing the very high available nutrient such as organic matter, a large amount of N P and K in mud, simultaneously containing also having the necessary trace element of many plants, therefore mud is useful nutrients resource, is good soil improvement agent and fertilizer.Sludge landfill characteristics comprises the Reparation and Reconstruction of farmland, forest land, meadow and contaminated soil.Heavy metal simultaneously in mud and pathogenic bacteria are the major obstacles that restriction sludge circulation utilizes.Also need the Pollution risk considered ecotope and human health when adopting the Land_use change of non-agricultural class, objectionable constituent such as the heavy metal in control mud reenters ecotope.
Sludge treatment refers to that mud carries out concentrating, dewaters, stablizes, the course of processing of mummification or burning.The sludge stabilization technique of at present both at home and abroad conventional maturation has: anaerobic digestion, aerobic sigestion, thermal treatment, heating and drying and add alkali and stablize, and conventional sludge disposal is Land_use change, burning, sanitary landfill, compost, material of construction etc.Conventional method for sludge treatment mainly contains following three kinds both at home and abroad at present:
(1) sludge incineration
After burning disposal, sludge volume can reduce 85% ~ 95%, Mass lost 70% ~ 80%.High temperature incineration can also eliminate harmful levels of pathogens in mud and objectionable impurities.Sludge incineration mainly can be divided into two large classes: a class is directly burned with incinerator by dewatered sludge; Another kind of is first for dewatered sludge mummification burned again.Sludge incineration requires that mud has higher calorific value, and therefore mud does not generally carry out digestion process.General do not meet hygienic requirements when mud, levels of toxic substances is high, and when can not utilize as agricultural avocation, or the combustion heat value of mud self is high, can spontaneous combustion when heat output can be utilized generate electricity, can consider employing sludge incineration.Burn institute's heat requirement, the heat energy that the organic compound combustion mainly contained by mud produces.Burning great advantage is can make reducing sludge volume rapidly and largely, and does not need storing device under atrocious weather condition, can meet more and more stricter environmental requirement and process the partial sludge being unwell to recycling fully.The incineration disposal of mud is not only a kind of method of effective reduction sludge volume, design good incinerator not only can automatically run, can also provide unnecessary energy and electric power, therefore nearly all developed country all expects to solve growing sludge quantity and the former partial sludge by land fill disposal by incineration disposal mud.The current sludge incineration ability in Beijing only has cement mill, Beijing ability of 500 tons every day (180,000 tons/year).And Beijing area sludge quantity at present about 800,000 tons annual, have the mud of more than 70% hopeless.
(2) farmland utilization of mud
The farmland utilization of mud is applied very early.This utilization and disposal options cause the final residuum problem of mud really to be solved, because wherein organism reenters physical environment.Containing abundant various trace elements in mud, be applied to the growth that farmland can be improved Soil structure, be increased soil fertility, promotes crop.Venomous injurant simultaneously also containing difficult degradations such as heavy metal and polychlorobiphenyl, Dioxins, radionuclide such as a large amount of pathogenic bacteria, parasite (ovum), Yi Jige, mercury in mud.In general, mud will be made clay treatment and must process through nontoxicization, otherwise the hazardous and noxious substances in mud can cause the secondary pollution of soil or water body.Therefore the mud standard-required of various countries to Land_use change is more and more stricter.Agricultural sludge must accomplish following some: first, strict hazardous and noxious substances and the pathogenic micro-organism controlling sewage plant sludge, makes it be up to state standards; Secondly, should be specifically noted that the content of Heavy Metals in Sludge, according to situations such as its soil background, use in strict accordance with the mud amount of application calculated; Again, in general farmland uses amount of sludge to have certain limit, and when reaching this limit, the agricultural of mud just should stop for some time proceeding again; Finally, farmland utilization should control to use under safely use amount, the whole district that utilizes needs to set up tight use, management, monitoring and monitoring system simultaneously, the state of the correlation factor such as soil, underground water, surface water, crop also in necessary moment region-of-interest and change, and make corresponding adjustment according to the change occurred, to keep the security of agricultural sludge, keep the Sustainable development of agricultural.Therefore mud farmland utilization also exists very large handling problem.
(3) sanitary landfill of mud
The sanitary landfill of mud starts from the sixties, is from protection of the environment angle on the basis of traditional landfill, through science addressing and necessary place protective treatment, that need strict management system with Engineering operation method that is science.The Sludge Disposal Techniques of a comparative maturity at present.Basic mode be municipal sludge through simple sterilising treatment, be directly poured into low ground or manufacture of intraocular Plain, valley floor.It requires lower to the sludge disposal technology in early stage, generally carries out digestion and subtracts and hold.If do not carried out digestion process, its natural mummification also can be allowed.Therefore it needs large-area place and a large amount of trucking costs, and ground need make Anti-seeping technology in order to avoid polluted underground water, therefore the proportion of Sludge landfill disposal is in recent years more and more less.EPA adds up, and the U.S. in decades from now on, 6500 landfill yards will have 5000 to be closed.This means that landfill finally can not avoid environmental pollution, and just delayed generation time.
Current sludge treatment Problems existing:
1. concentrated depart from after water ratio be 80% mud itself do not possess the ability of generating, mud after mummification can directly burn, because mud organic substance content is lower, the energy shortage produced in burning process is to maintain the ability consumption in sludge drying and burning process, it is in a basic balance that sludge anhydration burning treatment technology only can realize energy, the heat that mud namely after mummification produces can complete self burning reluctantly, and energy output is few.Generally anaerobic digestion after sludge condensation dewatered, output biogas, is apply more technology in the world simultaneously again.Sewage work of Gaobeidian City and little Hong Men sewage work is had to use this kind of technology in Beijing at present, the biogas that Gaobeidian City's sewage disposal station-service sludge fermentation produces generates electricity by way of merging two or more grid systems, little Hong Men sewage work then with the biogas that gas blower digestion fermentation produces, reduces productive power.While mud produces biogas, organic composition wherein also can correspondingly reduce, and calorific value is corresponding minimizing also, and for subsequent disposal, compost impact is little, but may affect to some extent burning disposal to a certain extent.
2. sludge landfill characteristics all has fairly large use in the European medium-developed country such as developed country and Norway, Poland etc. of the North America such as the U.S., Canada, developing country.The domestic trial just starting mud agricultural use as far back as the enforcement period of the seventh five-year plan, the research and practice of sludge composting, drying particles and composite fertilizer has all been carried out in the cities such as Tianjin, Shanghai, Beijing, Dalian, Qinhuangdao, Shenzhen, but small scale, agricultural use is still in the starting stage.Heavy metal is the important factor of restriction agricultural sludge, if the heavy metal in mud is accumulated to certain level in soil, can be detrimental to health after entering food chain, polluted underground water and affect ecological safety.Mud is as a kind of material, and itself, containing nutritive element and nutritive substance, when utilizing, can preferentially utilize, but its safe disposal is top priority.
3. Sludge landfill needs to take a large amount of soil, affects landfill yard operation and can not effect a radical cure pollution, and landfill is also subject to strict restriction.European Union's regulation landfill must combine with burning, and only burning ash can landfill.The priority of sludge treatment subtracts appearance, utilization, discarded, becomes main flow after sludge reduction, stabilization, harmless treatment as resource reusing.Mud utilizes can be divided into Land_use change and heat energy utilization, and concrete grammar comprises compost, alkaline stabilisation, heat drying, burning etc.
Utility model content
The purpose of this utility model is to overcome that existing sludge disposal technology energy consumption is high, matter and energy transforms halfway deficiency, mud is converted into the technology of the ecomaterial of high-energy and high added value by the measure of ecological natural, realizes the benign cycle of " resource reclaim, energy conversion, environmental friendliness, ecological natural ".
For achieving the above object, the utility model comprises following technical scheme:
The ecological conversion bed of a kind of mud, it comprises pond body 107, plantation layer 102, supporting layer 103, conversion medium layer 104, impervious barrier 106, joins mud system, emptying floral tube 202 and conversion bed plant 101;
Impervious barrier 106 is laid on pond body 107 bottom surface and sidewall surfaces;
Conversion medium layer 104, supporting layer 103 and plantation layer 102 is laid from the bottom to top successively in pond body 107;
Conversion medium layer 104 comprises white mica;
Join mud system and comprise cloth mud floral tube 304, this cloth mud floral tube is laid on conversion medium layer 104;
Supporting layer 103 is made up of rubble;
Plantation layer 102 is made up of coarse sand and planting soil; Conversion bed plant 101 is planted in plantation layer 102;
Emptying floral tube 202 is laid on bottom pond body 107.
The ecological conversion bed of mud as above, preferably, described impervious barrier 106 is anti seepage membrane or waterproof blanket, and between impervious barrier 106 and conversion medium layer 104, thickness setting is the flour sand protective layer 105 of 30mm ~ 50mm.
The ecological conversion bed of mud as above, preferably, the thickness of described conversion medium layer 104 is 500 ~ 1500mm, and the particle diameter of white mica is 10 ~ 50mm.
The ecological conversion bed of mud as above, preferably, the thickness of described supporting layer 103 is 200 ~ 500mm, and the particle diameter of rubble is 4 ~ 8mm.
The ecological conversion bed of mud as above, preferably, the thickness of described plantation layer 102 is 200mm ~ 300mm.
The ecological conversion bed of mud as above, preferably, described in join mud system and be made up of the inlet 305 be linked in sequence, valve 301, standpipe 302, threeway 303 and cloth mud floral tube 304.
The ecological conversion bed of mud as above, preferably, described cloth mud floral tube length is no more than 20m, and floral tube both sides tube wall has multiple perforate, and opening diameter is 10mm ~ 20mm, and perforate spacing is 150mm ~ 250mm.
The ecological conversion bed of mud as above, preferably, described emptying floral tube is embedded in bottom conversion bed, and spacing is 10m ~ 30m.
The ecological conversion bed of mud as above, preferably, described emptying floral tube is laid in the trapezoidal groove bottom conversion bed, and in groove, emptying floral tube 202 periphery fills rubble 201.
The ecological conversion bed of mud as above, preferably, described conversion bed plant is willow.
The ecological conversion bed of mud as above, preferably, described conversion bed plant is white purple willow.
The ecological conversion bed of mud of the present utility model is removed the purification of sludge pollution thing and is jointly completed by physics, chemistry and biological number of ways primarily of ecology conversion target substance conversion bed plant, conversion medium and microorganism etc.Concrete action principle is as follows:
(1) plant purification
The composition such as organism and N P and K in mud can be absorbed in a large number in growing process.The absorb nourishment potential speed of thing of plant is subject to the restriction of its net growth and plant tissue Middle nutrition substrate concentration, and nutrition stores and depends on plant tissue nutrient concentrations and maximum upright output equally.Therefore, wish that the plant characteristics as nutrition digestion and storage should comprise quick growth, high histotrophic nutrition thing content and reach the ability (biomass in unit area) of high upright output.A kind of preferred implementation of the utility model adopts white purple willow as conversion bed plant, white purple willow has water-fast resistant characteristic, per mu yield extra dry white wine bar can reach 3t ~ 4t, and planting total nitrogen content in 1 year white purple willow body of life of mud conversion bed is 20.3 ~ 25.9g/kg, and total phosphorous is 2.3 ~ 2.7g/kg.
(2) conversion medium purification
Containing elements such as a large amount of active Ca, Mg, Al, Fe in conversion medium, the comprehensive action of ion-exchange, deposition, fixing and microorganism can be passed through, be fixed in conversion medium by heavy metal elements such as Cr, Cu, Hg, the Pb in mud, Ca, Mg, Al, Fe ion discharged can be converted into a part for organism by the sorption of plant.A kind of preferred implementation of the utility model adopts rhombspar as conversion medium, and the elements such as its active Ca, Mg, Al, Fe can meet the conversion bed ecology of more than 10 years and transform demand.
(3) microbially decontaminate
Conversion medium and conversion bed plant can be used as microbe carrier simultaneously, and the organic substance decomposing in mud is the small-molecule substance that plant easily absorbs by the microorganism of its surface attachment, have the advantages that fast, the resistance to murder by poisoning ability of speed of response is strong.
The beneficial effects of the utility model are: the ecological conversion bed of mud of the present utility model is made up of a series of pond body having laid anti seepage membrane, and the pond body inside ecological conversion medium of filling and cloth mud, drainage pipeline, water-fast resistant plant is planted on top layer.Mud is through piping and join mud system cycle and be injected into ecological conversion bed, is degraded by the comprehensive action of conversion medium layer, microorganism and conversion bed root system of plant and is transformed.Build the clear water of discharging at the conversion bed of sewage work's periphery and can be back to sewage work, distant discharge clear water can be back to the dilution recycling of dewatered sludge.Mud all can be converted into biomass by this device, results cash crop while improvement mud.Plant the mud ecological conversion bed every mu process dewatered sludge 26.7 ~ 53.3t/ of white purple willow, produce white purple willow bar 3t ~ 4t.Its apparatus structure is simple, less investment, running cost are low, achieves the benign cycle of " resource reclaim, energy conversion, environmental friendliness, ecological natural ".There is good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is the longitudinal profile schematic diagram of each Rotating fields of the ecological conversion bed of a kind of preferred implementation of the utility model mud.
Fig. 2 is the longitudinal profile structural representation that a kind of preferred implementation of the utility model joins mud system.
Fig. 3 is the two dimensional structure schematic diagram that a kind of preferred implementation of the utility model joins mud system.
Fig. 4 is the longitudinal profile structural representation of the emptying floral tube of a kind of preferred implementation of the utility model.
Fig. 5 is the two dimensional structure schematic diagram of the emptying floral tube of a kind of preferred implementation of the utility model.
Embodiment
Below in conjunction with specific embodiment, the utility model is described in further detail, but following embodiment is only limitted to explain the utility model, and protection domain of the present utility model should comprise the described content of claim, is not limited only to the present embodiment.
The ecological conversion bed of embodiment 1 mud
As depicted in figs. 1 and 2, the ecological conversion bed of mud comprises pond body 107, plantation layer 102, supporting layer 103, conversion medium layer 104, impervious barrier 106, flour sand protective layer 105, joins mud system, emptying floral tube 202 and conversion bed plant 101.
Impervious barrier 106 is high density polyethylene(HDPE) anti seepage membrane or waterproof blanket, is laid on pond body 107 bottom surface and sidewall surfaces, causes soil or groundwater pollution in order to prevent mud seepage in conversion bed.On impervious barrier 106, laying depth is the flour sand protective layer 105 of 30mm ~ 50mm.
Conversion medium layer 104, supporting layer 103 and plantation layer 102 is laid successively on flour sand protective layer 105.
Conversion medium layer 104 is made up of white mica and assist medium, and wherein, white mica accounts for 10% ~ 15% of gross weight, and assist medium is one or more in biological ceramic particle, zeolite, Wingdale, gravel, volcanics.The thickness of conversion medium layer 104 is 500 ~ 1500mm, and the particle diameter of white mica and assist medium is 10 ~ 50mm.
As shown in Figure 3 and Figure 4, join mud system to be made up of the inlet 305 be linked in sequence, valve 301, standpipe 302, threeway 303 and cloth mud floral tube 304.Cloth mud floral tube 304 is laid on conversion medium layer 104.Cloth mud floral tube 304 length is no more than 20m, and floral tube both sides tube wall has multiple perforate, and opening diameter is 10mm ~ 20mm, and perforate spacing is 150mm ~ 250mm.The service range of each inlet is 50 ~ 200m
2.As shown in Figure 4, the ecological conversion bed of each mud can comprise many assembly mud system.
Supporting layer 103 is made up of rubble, is preferably Wingdale rubble.The thickness of supporting layer 103 is 200 ~ 500mm, and the particle diameter of rubble is 4 ~ 8mm.
Plantation layer 102 is made up of coarse sand and planting soil.The thickness of plantation layer 102 is 200mm ~ 300mm, and the volume ratio of coarse sand and planting soil is 1: 1 ~ 2: 1.Conversion bed plant 101 is planted in plantation layer 102.Conversion bed plant optimization is willow, is more preferably white purple willow.
As shown in Figure 5, the tube wall of emptying floral tube 202 has multiple perforate, is laid in the trapezoidal groove bottom conversion bed, and in groove, emptying floral tube periphery fills rubble 201.Emptying floral tube is multiple arranged in parallel, and spacing is 10m ~ 30m.Emptying floral tube connects water outlet.Emptying likebana also possesses water drainage function simultaneously, prevents ponding in conversion bed from too much affecting mud and absorbs and changing effect.The water outlet of the emptying floral tube 202 of every root installs by-pass valve control 2031, and by-pass valve control need be arranged in valve well 204, and the water of discharge is back to sewage work's pump pond or reuse eventually through main drain 205.
The ecological conversion bed of this mud in use, the mud of water ratio >=90% is entered the conversion medium layer 104 of mud conversion bed by joining mud systemic injection, after conversion medium, microorganism and the absorption and sorption of conversion bed root system of plant and the biochemical action purification of surface biological film, organism in mud, nitrogen, phosphorus and other pollution substance are absorbed degraded, are finally converted into conversion bed plant tissue.
This ecological conversion bed surface load is 40 ~ 80kg dewatered sludge/(m
2year), hydraulic detention time is 30-120 days.When conversion bed plant is white purple willow, its initial seeding density is 4 ~ 8 strains/m
2.The service range of joining each inlet of mud system is 50 ~ 200m
2.The ecological conversion bed of mud is generally built at sewage work's periphery as far as possible, and the mud produced does not need dehydration directly to carry out purifying and transforming to conversion bed by Cemented filling.The conversion bed location that periphery transports after not having the need of land used condition to dewater carries out purifying and transforming after dilution.
Embodiment 2 utilizes the ecological conversion bed of mud to administer dewatered sludge
The ecological conversion bed of the mud described in embodiment 1 is used to process certain sewage work's dewatered sludge of the north.This engineering design treatment scale 10000m
3/ d, the sludge yield of water ratio 75% is about 10t/d (dewatered sludge amount is 2500Kg/ days), is transported in conversion bed place by the mud after dehydration by mud transport trolley.The ecological conversion bed 30 groups of mud of building together, every specification 30m × 20m, it is 57kg dewatered sludge/(m that mud transforms load
2year).Plantation layer 102 thickness of ecological conversion bed is 200mm, and the ratio of coarse sand and planting soil is 1: 1.5.Plantation layer plants white purple willow.Supporting layer 103 thickness is 300mm, and main fill is the Wingdale rubble of particle diameter 4 ~ 8mm.The main fill of conversion medium layer 104 is white mica, and account for 12% of conversion medium, assist medium is Wingdale and volcanics, respectively accounts for 50% volume, and conversion medium filling total height is 1200mm, and particle diameter is 20 ~ 40mm.Impervious barrier is waterproof blanket.Join mud system to be made up of dn110 valve 301, dn110 standpipe 302, dn110 × 200 × 200 threeway 303 and dn200 cloth mud floral tube 304.
Dewatered sludge first thin up is the mud of water ratio 90%, then sludge pump is used to inject in ecological conversion bed by mud by inlet 305, after conversion medium, microorganism and the absorption and sorption of white purple willow root system and the biochemical action purification of surface biological film, organism in mud, nitrogen, phosphorus and other pollution substance are absorbed degraded, are finally converted into plant tissue.Ecological conversion bed notes mud 3 times every year, and the surface load of each note mud is 18.90kg dewatered sludge/m
2.First the ponding in conversion bed is discharged before each note mud, discharge the dilution that water can be back to mud.
In initial dewatered sludge, the content (weight ratio) of pollutent is: organism 59%, nitrogen 3.3%, phosphorus 0.28%, potassium 1.26%.
Inject conversion bed after 90 days, get the mud sample measurement that conversion medium layer adheres to, the content (weight ratio) of pollutent is: organism 3.78%, nitrogen 0.51%, phosphorus 0.05%, potassium 0.16%.
Producing extra dry white wine bar per year is 3500kg/ mu.
Embodiment 3 utilizes the ecological conversion bed of mud to administer non-dewatered sludge
The ecological conversion bed of the mud described in embodiment 1 is used to process the non-dewatered sludge of certain sewage work of the north.This engineering design treatment scale 2000m
3/ d, the sludge yield of water ratio 98% is about 25m
3/ d (dewatered sludge amount is 500Kg/ days, amounts to 182500Kg/), the ecological conversion bed 10 groups of mud of building together, every specification 20m × 20m, it is 45kg dewatered sludge/(m that mud transforms load
2year).Plantation layer 102 thickness of ecological conversion bed is 200mm, and the ratio of coarse sand and planting soil is 1: 1.Plantation layer plants white purple willow.Supporting layer 103 thickness is 300mm, and main fill is the Wingdale rubble of particle diameter 4 ~ 8mm.The main fill of conversion medium layer 104 is white mica, and account for 15% of conversion medium, assist medium is biological ceramic particle, and conversion medium filling total height is 1200mm, and particle diameter is 30 ~ 50mm.Impervious barrier is high density polyethylene(HDPE) (HDPE) anti seepage membrane.Join mud system to be made up of dn110 valve 301, dn110 standpipe 302, dn110 × 200 × 200 threeway 303 and dn200 cloth mud floral tube 304.
Mud from sewage work's water ratio about 98% uses sludge pump to inject in ecological conversion bed by inlet 305, after conversion medium, microorganism and the absorption and sorption of white purple willow root system and the biochemical action purification of surface biological film, organism in mud, nitrogen, phosphorus and other pollution substance are absorbed degraded, are finally converted into plant tissue.Ecological conversion bed notes mud 3 times every year, and the surface load of each note mud is 15.21kg dewatered sludge/m
2.First discharged by the ponding in conversion bed before each note mud, discharge water can be back to sewage work and purify.
In initial dewatered sludge, the content (weight ratio) of pollutent is: organism 62%, nitrogen 3.2%, phosphorus 0.64%, potassium 0.39%.
Inject conversion bed after 90 days, get the mud sample measurement that conversion medium layer adheres to, the content (weight ratio) of pollutent is: organism 5.24%, nitrogen 0.42%, phosphorus 0.06%, potassium 0.08%.
Producing extra dry white wine bar per year is 3000kg/ mu.
Claims (10)
1. the ecological conversion bed of mud, it is characterized in that, it comprises pond body (107), plantation layer (102), supporting layer (103), conversion medium layer (104), impervious barrier (106), joins mud system, emptying floral tube (202) and conversion bed plant (101);
Impervious barrier (106) is laid on pond body (107) bottom surface and sidewall surfaces;
Conversion medium layer (104), supporting layer (103) and plantation layer (102) is laid successively from the bottom to top in pond body (107);
Conversion medium layer (104) comprises white mica;
Join mud system and comprise cloth mud floral tube (304), this cloth mud floral tube is laid on conversion medium layer (104);
Supporting layer (103) is made up of rubble;
Plantation layer (102) is made up of coarse sand and planting soil; Conversion bed plant (101) is planted in plantation layer (102);
Emptying floral tube (202) is laid on pond body (107) bottom.
2. the ecological conversion bed of mud as claimed in claim 1; it is characterized in that; described impervious barrier (106) is anti seepage membrane or waterproof blanket, and between impervious barrier (106) and conversion medium layer (104), thickness setting is the flour sand protective layer (105) of 30mm ~ 50mm.
3. the ecological conversion bed of mud as claimed in claim 1, it is characterized in that, the thickness of described conversion medium layer (104) is 500 ~ 1500mm, and the particle diameter of white mica is 10 ~ 50mm.
4. the ecological conversion bed of mud as claimed in claim 1, it is characterized in that, the thickness of described supporting layer (103) is 200 ~ 500mm, and the particle diameter of rubble is 4 ~ 8mm.
5. the ecological conversion bed of mud as claimed in claim 1, it is characterized in that, the thickness of described plantation layer (102) is 200mm ~ 300mm.
6. the ecological conversion bed of mud as claimed in claim 1, it is characterized in that, described in join mud system and be made up of the inlet be linked in sequence (305), valve (301), standpipe (302), threeway (303) and cloth mud floral tube (304).
7. the ecological conversion bed of mud as claimed in claim 6, it is characterized in that, described cloth mud floral tube (304) length is no more than 20m, and floral tube both sides tube wall has multiple perforate, and opening diameter is 10mm ~ 20mm, and perforate spacing is 150mm ~ 250mm.
8. the ecological conversion bed of mud as claimed in claim 1, is characterized in that, described emptying floral tube is multiple to be parallelly embedded in bottom conversion bed, and spacing is 10m ~ 30m.
9. the ecological conversion bed of the mud according to any one of claim 1-8, it is characterized in that, described conversion bed plant is willow.
10. the ecological conversion bed of mud as claimed in claim 9, it is characterized in that, described conversion bed plant is white purple willow.
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