CN105461184B - One kind plants plant between and carries out sludge reduction and stabilized device and its technique - Google Patents
One kind plants plant between and carries out sludge reduction and stabilized device and its technique Download PDFInfo
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- CN105461184B CN105461184B CN201510856462.8A CN201510856462A CN105461184B CN 105461184 B CN105461184 B CN 105461184B CN 201510856462 A CN201510856462 A CN 201510856462A CN 105461184 B CN105461184 B CN 105461184B
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Abstract
Plant is planted between carry out sludge reduction and stabilized device and its technique the invention discloses one kind,Device is by sludge concentration tank (1),Throw mud pipeline (2),Between plant bed body processing pond (3),Bed body impervious barrier,Bottom filtering layer,Percolate collection tubes (4),Filtrate storage pool (5) is formed,Filtrate is collected,The water of removing can be carried out centralized collection by guide and storage system,It is transmitted back to sewage treatment plant's processing,The technology utilization sludge reduction and stabilized device,And reach the purpose for removing large quantity of moisture by plant absorption and evaporation,The growth of root system of plant makes bed body keep water penetration,Sludge is carried out stabilisation conversion by plant and soil collective effect,Sludge is changed into the soil for being available for plant growth,Present invention design is easy,Investment is low with operating cost,Manage easy to operate,Effectively sludge can be made to be converted into soil,Reach the target that recycling sludge utilizes,It is highly suitable for the recycling sludge processing disposal of southern small town sewage treatment plant.
Description
Technical field
The present invention relates to sewage and specific resistance to filtration technical field, and plant is planted more particularly between a kind of new utilization
Carry out sludge reduction and stabilized device and its technique.
Background technology
With Chinese society rapid development of economy, China's level of urbanization persistently accelerates and gradually carrying to environmental requirement
Height, China's urban wastewater treatment firm quantity and disposal ability increase year by year.Ended for the end of the year 2013, at China's urban wastewater treatment firm
Reason amount has reached nearly 1.5 hundred million m3/ d, built urban wastewater treatment firm quantity is up to 3600, and sludge annual production is up to more than 30,000,000 tons
(with 80% moisture content meter), but also increase with every year about more than 10% speed.Because wastewater treatment in China factory deposits always
In more serious " the light mud of heavy water " phenomenon, sewage sludge problem is not effectively addressed disposal all the time.External large-scale dirt
The ratio between investments of water treatment plant's sewage disposal and Treatment of Sludge is about 1:1.7, and in China, sewage disposal and Treatment of Sludge
Ratio between investments also only has 1:0.4, the investment critical shortage to specific resistance to filtration.
At present, at home in the sludge treating method of municipal sewage plant, sanitary landfills accounts for 63.0%, sludge aerobic
Fermentation and agricultural account for 13.5%, sludge nature desiccation comprehensive utilization and account for 5.4%, sludge incineration and account for 1.8%, sludge air storage
1.8% and 14.4% are respectively accounted for outward transport.In fact, the sludge overwhelming majority of sanitary landfills, air storage and outward transport belongs to random
Disposal, really realize that the ratio of safe disposal is no more than 20%.
The land use of sludge is the recycling sludge processing method of disposal that a kind of national policy is encouraged.The present invention is as dirty
One kind of mud land use, meeting the requirement of the principles and policies of national specific resistance to filtration, overall investment is low, and operating cost is low,
It is easy to operate, it is that a kind of recycling sludge suitable for southern small town sewage treatment plant handles disposal options.
The content of the invention
The technical problems to be solved by the invention are：Existing small and medium cities sewage plant sludge lacks rationally effective final
Disposal method is handled, the investment of specific resistance to filtration and operating cost are higher, in order to solve the above technical problems, the invention provides
One kind design is easy, easy to operate, the sludge reduction and stabilization method of low operating cost --- and kind plant enters between one kind utilizes
Row sludge reduction and stabilizing device and its technique, one kind plant plant between and carry out sludge reduction and stabilized dress
Put, by sludge concentration tank (1), throw mud pipeline (2), a kind bed body processing pond (3), bed body impervious barrier, bottom filtering layer, filtrate collection
(4), filtrate storage pool (5) composition are managed, wherein：Sludge concentration tank (1) plants bed body processing pond between being connected to by throwing mud pipeline (2)
(3) bottom and its surrounding side wall of bed body processing pond (3) are planted between, bed body antiseepage is placed on, bottom filtering layer is planted at bed body between being placed in
On the bed body impervious barrier for managing the bottom of pond (3), serike in a kind bed body, percolate collection tubes (4) are placed in the filtering layer of bottom, filter
Liquid collecting pipe (4) connection filtrate storage pool (5), filtrate are finally collected in filtrate storage pool (5).
Preferably, the bottom filtering layer is given birth to by graded sand rock layers (6), draining geotextiles (7) and plant successively from the bottom up
Long soil (8) composition.
Preferably, the percolate collection tubes (4) tilt and inserted in graded sand rock layers (6), percolate collection tubes (4) side table
Face and lower surface offer some collections hole (9), and it is per mono- hole of 10cm to collect the distance between hole (9), aperture 5mm, is in
Alternating expression is distributed.
Preferably, the gradient distribution that the gradient of the percolate collection tubes (4) is 2% is in filtering layer graded sand rock layers (6).
Preferably, the bed body impervious barrier by HDPE antiseepage films (10) and is placed in the geotextiles on HDPE antiseepage films (10) upper strata
Protective layer (11) is formed.
Preferably, described throwing mud pipeline (2) uses flexible pipe, can uniformly throw mud to a kind bed body processing pond (3).
Preferably, the plant used in bed body is planted between described and uses reed and cattail, based on reed, the plantation supplemented by cattail
Match as 4~6:1.
The handling process of sludge reduction and stabilized device is carried out using a kind plant, is comprised the steps of：
A, pair bed body processing pond (3) bottom is planted between and the soil basis of surrounding carries out compacting processing, antiseepage is carried out to bottom
Processing, laying bed body impervious barrier, bottom filtering layer and domestication of plants parent-soil；
B, reed and cattail are planted in a kind bed body substrate domestication of plants parent-soil, plantation proportioning is 4~6:1, plant
Plantation density is every square metre of 5-20 strain, periodically watering, and adds a small amount of sludge and provide nutrition needed for growth；
C, plant to be planted is grown to more than 55cm, after survival rate is more than 75%, can be started input and be come from sludge concentration tank (1)
Sludge；
D, throw mud keep with intermittent mode using flexible pipe throw mud pipe from kind bed body processing pond (3) surrounding equably add to
Between plant bed body processing pond (3)；
E, sludge passes through the filtering of plant growth native (8), draining geotextiles (7), graded sand rock layers (6) and bottom filtering layer
Afterwards, filtrate enters percolate collection tubes (4) road, and flow to low level filtrate storage pool through Action of Gravity Field in percolate collection tubes (4) road
(5), the filtrate in filtrate storage pool (5) periodically conveys to sewage plant；
F, after continuously adding operation 1 year, stopping adds sludge, and bed body continues to stabilize one to two moon of sludge,
G, the plant harvesting in bed is crushed, by the dirt after soil after the sludge in bed body is emptied and is stirred with plant
Mud is transported to vacant lot and places curing, and once, three months terminate for turning every two weeks.
Preferably, the described handling process that plant progress sludge reduction and stabilized device are planted between, it is special
Levy and the interval time of mud is being thrown in step d：In temperature higher spring and summer, throw mud by every 6~7 days once in the way of throw
Add；If freezing in temperature relatively low winter but not, throw mud by every 10~14 days once in the way of add；During rainy season, reduce
Throw the frequency of mud；And by throwing mud pipeline (2) by Valve controlling flow, dosage is controlled by flowmeter.
The technique is by a transpiration for kind plant leaf blade, the absorption absorption of rhizome, soilization effect, edaphon
Effect and the layering crown_interception of plant and soil etc. reach the minimizing of sludge, innoxious and resource target.Its is main
Added including sludge and the antiseepage unit of plant growth, collection, guide and the stocking system of filtrate.Sludge is entered by dosing system
Enter antiseepage unit, sludge reaches the purpose for removing large quantity of moisture by infiltration, plant absorption and evaporation in this space, plants
The growth of thing root system makes bed body keep water penetration, and sludge is carried out stabilisation conversion by plant and soil collective effect, and sludge is turned
Chemical conversion is available for the soil of plant growth.
The operation principle introduction of the present invention：One kind plants plant between and carries out sludge reduction and stabilized device, by
Sludge concentration tank (1), throw mud pipeline (2), kind bed body processing pond (3), bed body impervious barrier, bottom filtering layer, percolate collection tubes
(4), filtrate storage pool (5) is formed, wherein：Sludge concentration tank (1) plants bed body processing pond between being connected to by throwing mud pipeline (2)
(3) bottom and its surrounding side wall of bed body processing pond (3) are planted between, bed body antiseepage is placed on, can prevent the filtrate of high load capacity from entering
Enter soil and groundwater, between bottom filtering layer is placed on the bed body impervious barrier of the bottom of kind bed body processing pond (3), planted in a kind bed body
Kind plant, sludge uniformly throw mud between in kind bed body processing pond (3) by throwing mud pipeline (2), and percolate collection tubes (4) are placed in bottom
In filtering layer, percolate collection tubes (4) connection filtrate storage pool (5), the solid content of sludge reaches after being handled by sludge concentration tank (1)
1-6%, and added by delivery pump (14) or gravity stream two ways by throwing mud pipeline (2) to a kind bed body processing pond (3),
Sewage filtrate in sludge is collected in filtrate storage pool (5) eventually through percolate collection tubes (4)；And high load capacity can be prevented
Filtrate enters soil and groundwater, and filtrate is collected, bottom filtering layer and percolate collection tubes (4) can make the water on bed body impervious barrier fast
Speed discharge, reduces moisture content, and filtrate storage pool (5) can adjust filtrate and is discharged into when sewage plant load is relatively low, reduces impact.
Further, the bottom filtering layer is from the bottom up successively by graded sand rock layers (6), draining geotextiles (7) and plant
Growth native (8) composition, percolate collection tubes (4) are tilted and inserted in graded sand rock layers (6), percolate collection tubes (4) side surface and
Lower surface offers some collections hole (9), and it is the aperture 5mm per mono- hole of 10cm to collect the distance between hole (9), in staggeredly
Formula is distributed, and the water in bed body processing pond can be made quickly to discharge, reduction moisture content, and serike in a kind bed body, filtrate is collected
Pipe (4) is placed in the filtering layer of bottom, and percolate collection tubes (4) connection filtrate storage pool (5), filtrate is finally collected to filtrate storage pool
(5) in, filtrate storage pool (5) can adjust filtrate and be discharged into sewage disposal device when sewage plant load is relatively low, to avoid to height
The impact of sewage disposal device under load condition；Wherein, the gradient distribution that percolate collection tubes (4) gradient is 2% is in filtering layer
In graded sand rock layers (6), optimal collecting effect can be reached；
Further, the bed body impervious barrier by HDPE antiseepage films (10) and is placed in the geotechnique on HDPE antiseepage films (10) upper strata
Cloth protective layer (11) is formed, and a kind bed body bottom and surrounding are using the Anti-seeping technology of sandwich construction, antiseepage film lower section soil basis
Compacting processing must be carried out, prevents from damaging impervious barrier, effectively protects Soil Surrounding unaffected；
Further, described throwing mud pipeline (2) uses flexible pipe, can throw mud to kind bed body processing pond (3) surrounding, throws
Add and use flexible pipe, toss area position can move, and to ensure that sludge adds uniform, obtain optimal Treatment of Sludge effect；
Further, the plant used in bed body is planted between described and uses reed and cattail, based on reed, supplemented by cattail,
The well developed root system of reed, four seasons survival, can continuous loose sludge blanket (15), prevent hardened, accelerate seepage velocity, be plant, micro-
Biological activity provides oxygen；Cattail can effectively prevent pest and disease damage and mosquitos and flies, and summer growth is rapid, the plantation density of plant
It is every square metre of 5-20 strain according to climate and weather situation, plantation proportioning is 4~6:1, according to plantation experience, ratio is less than 4：
1, cattail quantity is excessive, easily overall withered in the winter time, influences winter treatment effect, if reed quantity is few, can cause sludge
Hardened, ratio is higher than 6：1, influence of the cattail to mosquitos and flies is too small, is also easy to produce mosquitos and flies.Moisture in sludge passes through in bed body processing pond
Gravity Separation, by the evaporation of reed and cattail, plant absorption and transpiration cause sludge solid content from 1-6% improve to
More than 25%, the growth of root system of plant makes bed body keep water penetration, plant and soil collective effect that sludge is carried out into stabilisation turn
Change, sludge is changed into the soil for being available for plant growth.
Further, the present apparatus also includes filtrate collection well (12) and sewage pump (13), percolate collection tubes (4) connection
Well (12) is collected to filtrate, filtrate collects well (12) and connects filtrate storage pool (5) by sewage pump (13).Filtrate is received by filtrate
Collector (4) road gravity flow to low level filtrate and collects well (12), and the percolate collection tubes (4) are connected to filtrate and collect well (12), filter
Liquid collects well (12) and connects filtrate storage pool (5) by sewage pump (13), collects in well and starts sewage pump (13) according to liquid level, will
Filtrate is delivered to filtrate storage pool (5).Water in storage pool inputs sewage plant processing in sewage treatment plant's underrun.
Sludge reduction and stabilized handling process are carried out using a kind plant, is comprised the steps of：A, pair bed is planted between
Body processing pond (3) bottom and the soil basis of surrounding carry out compacting processing, carry out Anti-seeping technology to bottom, lay bed body antiseepage
Layer, bottom filtering layer and domestication of plants parent-soil；B, plant reed in a kind bed body substrate domestication of plants parent-soil and cattail, plantation are matched somebody with somebody
Than for 4~6:1, the plantation density of plant is every square metre of 5-20 strain, periodically watering, and adds a small amount of sludge and provide needed for growth
Nutrition；C, plant to be planted is grown to more than 55cm, after survival rate is more than 75%, can start dirt of the input from sludge concentration tank (1)
Mud；D, throw mud to keep adding sludge with intermittent mode, the filtrate that e, sludge filter by bottom filtering layer enters percolate collection tubes (4)
Road, it flow to low level filtrate storage pool (5) through Action of Gravity Field, the filtrate in filtrate storage pool (5) periodically conveys to sewage plant；F, even
Continue after adding operation 1 year, 1 year, stopping adds sludge, and bed body continues to stabilize one to two moon of sludge；G, by the plant in bed
Thing harvesting is crushed, and the sludge in bed body is emptied and placed after being stirred with plant, sludge is to use with the purpose that plant is stirred
In biological dewatered, moisture therein is further removed, and enables sludge further decomposed, turning every two weeks once, is turned over for two weeks
Heap is once to have mixing inside and outside making, and can terminate the removal of uniform moisture, three months；
Further, mud interval time is thrown described in step d：If in temperature higher spring and summer, throwing mud can be according to every 6
~7 days modes once add；If in temperature relatively low winter, if do not frozen, throwing mud can be according to every 10~14 day one
Secondary mode adds；When running into rainy season, throwing the frequency of mud will suitably reduce, and throw mud interval and depend primarily on containing for overall bed body
Gu rate, interval is higher than 6 days, and treating capacity can reduce, and overdrying can cause other weed growths；Winter is less than 14 days, may go out
The situation that existing bed body excessively moistens, moisture removal is inadequate, passes through delivery pump (14) or gravity stream two by throwing mud pipeline (2) when throwing mud
Kind mode is equably added into a kind bed body processing pond (3) from kind bed body processing pond (3) surrounding, is thrown mud pipeline (2) and is passed through
Valve controlling flow, dosage is controlled by flowmeter；
In above-mentioned technique：The bottom filtering layer that moisture in sludge passes through in bed body processing pond, by graded sand rock layers (6)
Gravity Separation and by percolate collection tubes (4) and filtrate storage pool (5) most at last sewage discharge, sludge pass through between plant bed body at
Manage evaporation, plant absorption and transpiration of the reed of proportioning combination plantation and cattail in pond (3) so that sludge solid content is from 1-
6% improves to more than 25%, and volume reduces 90%, the removal efficiency of the pollutant such as COD, nitrogen, phosphorus in sludge reach 60% with
On, reduce the load of subsequent treatment, there occurs morphologic change, unstable friendship in the process for contained heavy metal in sludge
Changing state and carbonate state ratio reduces, and stable organically combine state and the rise of residual form ratio, biological stability improve, and
Kind bed body processing pond (3) constantly stabilizes it during sludge adds so that the Escherichia coli quantity in sludge is significantly
Reduce, humus content increase in sludge, rich in nutrients such as N, P, its product meets《GBT 23486-2009 town sewages
Treatment plant's sludge treatment afforestation shale》It is required that recycling can be carried out by having reached, adsorbed by the absorption of plant,
Soilization effect, edaphon effect and layering crown_interception of plant and soil etc. reach the minimizing, harmless of sludge
Change and resource target；The method of operation of bed body has larger relation with live season and weather, therefore in the temperature higher spring
Summer, throwing mud can add according to weekly mode；In temperature relatively low winter, if do not frozen, throwing mud can be by
Added according to mode once every two weeks, when running into rainy season, throwing the frequency of mud will suitably reduce；Pass through the difference to seasonal climate
Effective control to throwing mud dosage and time interval so that the present apparatus and its technique reach optimal result and effect, especially
It is adapted to the middle or small sewage treatment in south warm area, invests, significant effect low with operating cost, a kind bed body processing
The operation in pond (3) adds after sludge terminates typically using 3-5 as the cycle, continues to stablize one-month period, afterwards will be native in bed body
Sludge after earth is transported to vacant lot, by placing ventilation and turning, further reduces moisture content, and the time for placing curing is 3
Individual month, moisture percentage in sewage sludge can be down to less than 60%, be further used as Landscape application.
Beneficial effects of the present invention：Thickened sludge is delivered in the soil bed body that plant is planted between kind has, by a series of
The complicated mechanism of action, Gravity Separation, evaporation, plant absorption and the transpiration that the moisture in sludge passes through in bed body processing pond
It is reduced, meanwhile, caused filtrate is subjected to guide and storage, reduces pollutant burden, is back to sewage treatment plant's processing,
It can prevent the filtrate of high load capacity from entering soil and groundwater, filtrate is collected, guide system can make the water in antiseepage unit fast
Speed discharge, reduces moisture content, and filtrate stocking system can adjust filtrate and is discharged into when sewage plant load is relatively low, reduces impact, should
Technique can reduce sludge volume more than 90%, and sludge solid content is improved to more than 25% from 1-6%, can reduce filtrate
In COD, N, P isoconcentration, it is heavy metal-passivated wait pollutant removal efficiency reach more than 60%, and the soil for passing through bed body
Effect, most sludge stabilizing is the product of similar soil at last, so as to reach the purpose of sludge final process disposal, institute of the present invention
State that technological investment is small, operating cost is low, operation is easy, can realize the recycling of sludge, meet national specific resistance to filtration
Principles and policies requirement, overall investment is low, and operating cost is low, easy to operate, is a kind of to be applied to southern small town sewage
The recycling sludge processing disposal options for the treatment of plant.
Brief description of the drawings
Fig. 1 is to plant plant progress sludge between to show quantization kind bed body processing pond (3) structure between stabilized device
It is intended to；
Fig. 2 is to plant plant between to carry out the antiseepage that sludge will quantify plant bed body processing pond (3) between stabilized device
Guide schematic diagram；
Fig. 3 is the schematic diagram of embodiment 2；
Fig. 4 is the schematic diagram of embodiment 3
Fig. 5 is the schematic diagram of embodiment 4
Wherein：1-sludge concentration tank, 2-throwing mud pipeline, a 3-kind bed body processing pond, 4-percolate collection tubes, 5-are filtered
Liquid storage pool, 6-graded sand rock layers, 7-draining geotextiles, 8-plant growth soil, 9-collect hole, 10-HDPE antiseepage films,
11-geotextiles protective layer, 12-filtrate collect well, 13-sewage pump, 14-delivery pump, 15- sludge blankets.
Embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Embodiment 1：As shown in Figure 1 and Figure 2
One kind plants plant between usinging and carries out sludge reduction and stabilized device, by sludge concentration tank 1, throwing mud pipeline 2,
Between plant bed body processing pond 3, bed body impervious barrier, bottom filtering layer, percolate collection tubes 4, filtrate storage pool 5 and form, wherein：Sludge condensation
Pond 1 plants bed body processing pond 3 and forms sludge blanket 15 between being connected to by throwing mud pipeline 2, bed body processing is planted in bed body antiseepage between being placed on
The bottom in pond 3 and its surrounding side wall, between bottom filtering layer is placed on the bed body impervious barrier of the bottom of kind bed body processing pond 3, a kind bed
Serike in body, percolate collection tubes 4 are placed in the filtering layer of bottom, and percolate collection tubes 4 connect filtrate storage pool 5, as shown in Fig. 2
The bottom filtering layer is made up of graded sand rock layers 6, draining geotextiles 7 and plant growth soil 8 successively from the bottom up, and the filtrate is received
The side surface of collector 4 and lower surface offer some collection holes 9, and it is that aperture is per mono- hole of 10cm to collect the distance between hole 9
5mm, it is distributed in alternating expression, the gradient distribution that the gradients of the percolate collection tubes 4 is 2% is in filtering layer graded sand rock layers 6, institute
Bed body impervious barrier is stated to be made up of with the geotextiles protective layer 11 for being placed in the upper strata of HDPE antiseepage films 10 HDPE antiseepage films 10；Bed body substrate
Reed is planted in cultivated soil and cattail, sludge come from sludge concentration tank 1, is handled by kind bed body between throwing the uniform input of mud pipeline 2
Pond 3, sludge filter out filtrate by bottom filtering layer, and filtrate enters percolate collection tubes 4, and filtrate is finally collected to from percolate collection tubes 4
In filtrate storage pool 5.
Embodiment 2：
Plant plant resources between the sludge of certain sewage treatment plant as shown in Figure 3 to disguise by setting in sludge dewatering computer room, size
For length × width × height=20m × 10m × 1.7m, bottom carries out Anti-seeping technology, lays permeable formation and domestication of plants parent-soil, spring,
(reed and cattail planting proportion 4 after reed and cattail are planted in bed body substrate cultivated soil：1), plantation density is every square metre 5
Strain, periodically watering, and add a small amount of sludge and nutrition needed for growth is provided, after one month, plant strain growth is to more than 60cm, survival rate
More than 80%, start to throw mud；Sludge comes from sludge concentration tank 1, and bed body processing pond 3 is planted between being connected to by pipeline from concentration basin bottom
It is anti-, by the way of gravity stream, by Valve controlling flow, dosage is controlled by flowmeter；Filtrate passes through percolate collection tubes 4
Road gravity flow to low level filtrate storage pool 5, and the filtrate in low level reservoir is daily 23：00 conveys to sewage plant.
Whole system is kept adding sludge with intermittent mode, and sludge is uniformly added to antiseepage list by adding flexible pipe
Member.In April to (summer) during November, dosing method is to add once for every 7 days, steady into plant growth and sludge dewatering afterwards
Periodically；During December to March (winter), dosing method is to add once for every 10 days.It is continuous to add operation 1 year.After 1 year,
Stopping adds sludge, and bed body continues to stabilize sludge one month.Afterwards, the plant harvesting in bed is crushed, by the dirt in bed body
Mud is emptied and placed after being stirred with plant, and once, three months terminate for turning every two weeks.
In the process, bed body summer has reached 75% to the removal efficiency of COD in sewage, and the removal efficiency of ammonia nitrogen is reached
To 70%, 80% has been reached to the clearance of total phosphorus.Stabilized sludge solid content has reached 30% in bed.Cured through placing
Afterwards, the solid content of sludge has reached 45%.Embodiment 3
Disguise as shown in figure 4, planting plant resources between the sludge of certain sewage treatment plant setting in biological tank long term planning region,
From sludge concentration tank 1 and dehydration machine room farther out, therefore using the conveying of delivery pump 14 add.Two identical antiseepage units are set,
Size is length × width × height=50m × 20m × 2m, and bottom carries out Anti-seeping technology according to four-layer structure, lays permeable formation and plant
Cultivate parent-soil.In spring, (reed and cattail planting proportion 5 after reed and cattail are planted in bed body substrate cultivated soil：1) plant close
Spend for 10 plants every square metre, periodically watering, add a small amount of sludge and nutrition needed for growth is provided, after 25 days, plant strain growth is to exceeding
55cm, survival rate start to throw mud more than 75%.Sludge comes from sludge concentration tank 1, and throwing mud is connected to from concentration basin bottom by pipeline
Pump, thickened sludge is delivered to bed body antiseepage unit by throwing dredge pump, flow and sludge dosage are controlled by flowmeter.Bed body
Caused filtrate flow to low level filtrate storage pool 5 by the gravity of percolate collection tubes 4, and the filtrate in low level reservoir is daily
00：00 conveys to sewage plant.
Whole system keeps adding sludge with intermittent mode, and sludge adds flexible pipe by end and uniformly added from surrounding
To antiseepage unit.In April to during October, dosing method is to add once for every 6 days, afterwards into the intermittent phase；In November to March
Period, dosing method are to add once for every 12 days.It is continuous to add operation 2 years.After 2 years, stopping adds sludge, and bed body continues steady
Surely sludge one and a half months is changed.Afterwards, the plant harvesting in bed is crushed, the sludge in bed body is emptied and put after being stirred with plant
Put, once, three months terminate for turning every two weeks.
In the process, bed body summer has reached 80% to the removal efficiency of COD in sewage, and the removal efficiency of ammonia nitrogen is reached
To 82%, 85% has been reached to the clearance of total phosphorus.Stabilized sludge solid content has reached 32% in bed.Cured through placing
Afterwards, the solid content of sludge has reached 48%.
Embodiment 4
Plant resources makeup is planted between the sludge of certain sewage treatment plant as shown in Figure 5 to use setting in planning specific resistance to filtration
About 1 meter of ground, neighbouring sludge concentration tank 1, sludge concentration tank 1 and ground height, sludge is added by pipeline gravity stream.The system is set
Two identical bed bodies are put, size is length × width × height=40m × 40m × 1.7m, and bottom carries out Anti-seeping technology, lays permeable formation
With domestication of plants parent-soil.In spring, (reed and cattail planting proportion 6 after reed and cattail are planted in bed body substrate cultivated soil：1)
Plantation density is 20 plants every square metre, periodically watering, and adds nutrition needed for a small amount of sludge offer growth, after one and a half months, is planted
Strain is grown to more than 65cm, and survival rate starts to improve and throw mud load more than 80%.Sludge comes from sludge concentration tank 1, by pipeline from
Concentration basin bottom is connected to bed body antiseepage unit, by the way of gravity stream, by Valve controlling flow, is controlled by flowmeter
Dosage.Filtrate flow to low level filtrate by the gravity of percolate collection tubes 4 and collects well 12, and the percolate collection tubes 4 are connected to filter
Liquid collects well 12, and filtrate collects well 12 and connects filtrate storage pool 5 by sewage pump 13, collects in well and starts sewage pump according to liquid level
13, filtrate is delivered to filtrate storage pool 5, the filtrate in filtrate storage pool 5 is daily 01：00 conveys to sewage plant.
Whole system keeps adding sludge with intermittent mode, and sludge finally adds flexible pipe quilt by conveyance conduit by end
Uniformly add to antiseepage unit.In May to during October, dosing method is to add once for every 7 days, afterwards into plant growth
With sludge dewatering stationary phase；In November to during April, dosing method is to add once for every 14 days.It is continuous to add operation 1 year.One
Nian Hou, stopping add sludge, and bed body continues to stabilize sludge two months.Afterwards, the plant harvesting in bed is crushed, by bed body
Sludge empty and with plant stir after place, turning every two weeks once, three months terminate.
In the process, bed body summer has reached 80% to the removal efficiency of COD in sewage, and the removal efficiency of ammonia nitrogen is reached
To 75%, 80% has been reached to the clearance of total phosphorus.Stabilized sludge solid content has reached 32% in bed.Cured through placing
Afterwards, the solid content of sludge has reached 47%.
In summary, plant is planted between of the invention and carries out sludge reduction and stabilized device and its technique to middle-size and small-size
Municipal sewage sludge has good minimizing and static stabilization, can reduce moisture content, it is heavy metal-passivated, keep certain
Nutritional ingredient, meet the national standard of sludge horticultural application.
The above is only the preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-described embodiment,
It is within the scope of the present invention with various process programs of the present inventive concept without substantial differences.
Claims (7)
1. one kind plants plant progress sludge reduction and stabilized device between usinging, it is characterised in that by sludge concentration tank (1),
Throw mud pipeline (2), a kind bed body processing pond (3), bed body impervious barrier, bottom filtering layer, percolate collection tubes (4), filtrate storage pool (5)
Form, wherein：Sludge concentration tank (1) plants bed body processing pond (3) between being connected to by throwing mud pipeline (2), and bed body antiseepage is placed on
Between plant bed body processing pond (3) bottom and its surrounding side wall, bottom filtering layer be placed between plant bed body processing pond (3) bottom bed body
On impervious barrier, serike in a kind bed body, percolate collection tubes (4) are placed in the filtering layer of bottom, percolate collection tubes (4) connection filtrate
Storage pool (5), filtrate, which is finally collected in filtrate storage pool (5), inputs sewage treatment plant is handled；The bottom filtering layer from
Under be up made up of successively graded sand rock layers (6), draining geotextiles (7) and plant growth native (8)；The percolate collection tubes (4)
Inclination is inserted in graded sand rock layers (6), and percolate collection tubes (4) side surface and lower surface offer some collections hole (9)；Institute
The throwing mud pipeline (2) stated uses flexible pipe, uniformly can throw mud into a kind bed body processing pond (3).
2. one kind according to claim 1 plants plant between and carries out sludge reduction and stabilized device, its feature
It is per mono- hole of 10cm to be the distance between described collection hole (9), aperture 5mm, is distributed in alternating expression.
3. one kind according to claim 1 plants plant between and carries out sludge reduction and stabilized device, its feature
The gradient distribution that the gradient for being the percolate collection tubes (4) is 2% is in filtering layer graded sand rock layers (6).
4. one kind according to claim 1 plants plant between and carries out sludge reduction and stabilized device, its feature
It is the bed body impervious barrier by HDPE antiseepage films (10) and is placed in the geotextiles protective layer (11) on HDPE antiseepage films (10) upper strata
Form.
5. one kind according to claim 1 plants plant between and carries out sludge reduction and stabilized device, its feature
Use reed and cattail planting the plant planted in bed body between described, plantation proportioning is 4~6:1.
6. one kind is using kind plant carries out sludge reduction and stabilisation between as claimed in any one of claims 1 to 5, wherein
Device handling process, it is characterised in that comprise the steps of：
A, pair bed body processing pond (3) bottom is planted between and the soil basis of surrounding carries out compacting processing, Anti-seeping technology is carried out to bottom,
Lay bed body impervious barrier, bottom filtering layer and domestication of plants parent-soil；
B, reed and cattail are planted in a kind bed body substrate domestication of plants parent-soil, plantation proportioning is 4~6:1, the plantation of plant
Density is every square metre of 5-20 strain, periodically watering, and adds a small amount of sludge and provide nutrition needed for growth；
C, plant to be planted is grown to more than 55cm, after survival rate is more than 75%, can start dirt of the input from sludge concentration tank (1)
Mud；
D, mud is thrown to keep equably adding to a kind from kind bed body processing pond (3) surrounding using flexible pipe throwing mud pipe with intermittent mode
Bed body processing pond (3)；
E, sludge is after the filtering of plant growth native (8), draining geotextiles (7), graded sand rock layers (6) and bottom filtering layer, filter
Liquid enters percolate collection tubes (4) road, and flow to low level filtrate storage pool (5) through Action of Gravity Field in percolate collection tubes (4) road, filter
Filtrate in liquid storage pool (5) periodically conveys to sewage plant；
F, after continuously adding operation 1 year, stopping adds sludge, and bed body continues to stabilize one to two moon of sludge；
G, the plant harvesting in bed is crushed, the sludge in bed body is emptied and turned the sludge after soil after being stirred with plant
It is transported to vacant lot and places curing, once, three months terminates for turning every two weeks.
7. according to claim 6 plant the handling process that plant carries out sludge reduction and stabilized device between,
It is characterized in that the interval time of mud is thrown in step d：In temperature higher spring and summer, throw mud by every 6~7 days once in the way of
Add；If freezing in temperature relatively low winter but not, throw mud by every 10~14 days once in the way of add；During rainy season, drop
The low frequency for throwing mud；And by throwing mud pipeline (2) by Valve controlling flow, dosage is controlled by flowmeter.
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| CN105906168B (en) * | 2016-06-27 | 2019-06-14 | 安徽金联地矿科技有限公司 | A kind of mine wastewater recovery and treatment method |
| CN106430883B (en) * | 2016-10-13 | 2019-08-06 | 河南科技大学 | A kind of method of comprehensive utilization of town domestic sewage factory sludge |
| CN106495418A (en) * | 2016-12-30 | 2017-03-15 | 桂林市逸仙中学 | A kind of domestic sewage processing system |
| CN106587557A (en) * | 2017-01-25 | 2017-04-26 | 厦门市葳迎生物科技有限公司 | Sludge treatment method using pennisetum hybrid |
| CN107216009A (en) * | 2017-07-07 | 2017-09-29 | 陕西省环境科学研究院 | A kind of plant bed apparatus of processing small towns sewage plant sludge |
| CN111153507A (en) * | 2019-12-26 | 2020-05-15 | 中国科学院合肥物质科学研究院 | Activated sludge zero-emission greenbelt type treatment tank and sewage treatment system |
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| JP4034705B2 (en) * | 2003-08-27 | 2008-01-16 | 株式会社神鋼環境ソリューション | Novel microorganism and method for treating organic solid using the microorganism |
| CN101585581A (en) * | 2008-05-20 | 2009-11-25 | 海斯博特（北京）科技有限公司 | Combined type artificial wetland sewage treatment system |
| CN102515360A (en) * | 2011-12-31 | 2012-06-27 | 中国建筑股份有限公司 | Artificial wetland for treating lime-rich alkali waste water and treatment method thereof |
| CN104418433B (en) * | 2013-08-20 | 2016-12-28 | 沈阳环境科学研究院 | High efficiency composition artificial wetland sewage water treatment method |
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