CN203545861U - In-situ chemical conditioning device for landfill library sludge - Google Patents
In-situ chemical conditioning device for landfill library sludge Download PDFInfo
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- CN203545861U CN203545861U CN201320492091.6U CN201320492091U CN203545861U CN 203545861 U CN203545861 U CN 203545861U CN 201320492091 U CN201320492091 U CN 201320492091U CN 203545861 U CN203545861 U CN 203545861U
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Abstract
The utility model discloses an in-situ chemical conditioning device for landfill library sludge. The bottom of a medicine dissolving box is connected with a rubber pipe by virtue of a flow pump, the rubber pipe is provided with liquid outlets at equal intervals, a trepanning casing pipe is respectively installed in each liquid outlet, weaved geotechnical clothes and high-strength foam plates provided with a plurality of rows and columns of holes are sequentially paved on the surface of a sludge landfill library from top to bottom, each trepanning casing pipe is respectively connected with a plastic drain plate part with the same structure, a connection pipe of each plastic drain plate part is connected with a pipe orifice of a hand-shaped joint, a groove body of the hand-shaped joint is connected with a plastic drain plate, assemblies of the connection pipes, the hand-shaped joints and the plastic drain plates penetrate through the weaved geotechnical clothes to be inserted into the bottom of the sludge landfill library through the high-strength foam plates, connection pipes penetrate through the high-strength foam plates and cushion plates to be connected with the pipe orifices of the trepanning casing pipes, and the cushion plates are pressed into the holes of the high-strength foam plates. By utilizing the in-situ chemical conditioning device, the landfill library sludge is subjected to in-situ decrement treatment, processes of excavation, transportation and the like do not need to be added, secondary pollution is avoided, and the cost is reduced simultaneously.
Description
Technical field
The utility model relates to the treatment technology of solid waste, especially relates to a kind of burying base sludge in-situ chemical conditioning device.
Background technology
Mud is the solid precipitation material producing in municipal wastewater treating processes.Mud is in sewage work after concentrated, digestion, mechanical dehydration, and its wet basis water ratio is generally at 80%-85%.In recent years, along with Chinese society expanding economy, sludge yield improves year by year.According to Chinese environmental yearbook, the dewatered sludge that China municipal sewage plant in 2012 produces is up to 2,200 ten thousand tons, and still with annual 10% speed increment.Main mud has landfill, compost, burning at present.Because the water ratio of China's mechanical dehydration mud is higher, too high being difficult to promotes the use of because of running cost for compost and burning.
The sanitary landfill of mud is that Sewage Plant is transported outward in the Sludge landfill storehouse that mud is directly poured into excavation.The features such as it has less investment, and working cost is low are the main disposal options of mud at present and from now on for some time of China.Current, at China's each big and medium-sized cities periphery, all there is size, Sludge landfill storehouse that the degree of depth is different, as the Shanghai Lao Gang that early carries out Sludge landfill has 120 Sludge landfill storehouses.
Long-term open landfill causes rain infiltration further to improve moisture percentage in sewage sludge, so that in Sludge landfill storehouse, mud is flow-like, slip resistance is extremely low, has stronger potential safety hazard.According to investigations, personnel had once been caused and equipment is absorbed in the accidents such as mud storehouse, mud gush outward in the existing many mud of China storehouse.In China's many cities burying base, the annual amount of landfill of mud, up to few hundred thousand tonnes of, starts to face the predicament that can fill out without ground simultaneously.Therefore burying base mud is carried out to the disposal of original position decrement, not only can eliminate the potential safety hazard in mud storehouse, can improve the service efficiency of landfill space simultaneously.
Chinese scholars has proposed the in-situ solidifying technology of mud, in mud granule, mixes inertia skeleton base material and consolidating material, by occurring to form the cured body with some strength after series of physical, chemical reaction.But because the initial aqueous rate of mud is high, inorganic particle is few, need to add a large amount of inorganic particles and solidifying agent, when therefore curing technology is processed burying base mud, be faced with increase-volume than large, high in cost of production problem.
Domestic scholars has proposed technique of soft soil foundation treatment or has improved technique of soft soil foundation treatment, has been used to the super soft foundations such as consolidation process weak soil, mud, hydraulic reclamation mud.But due to the coefficient of consolidation (10 of mud
-5cm
2/ s ~ 10
-6cm
2/ s) than weak soil, mud (10
-4cm
2/ s) low 1-2 order of magnitude, uses the direct lignin-sludge of traditional vacuum precompressed technology, can not reach good Reduction by Drainage dose-effect fruit.Above-mentioned deficiency makes traditional vacuum precompressed technology be difficult to apply to the disposal of burying base mud.
Mud second dehydration or the deep dehydration technology of the exploitation of domestic scholars and company, be mainly used in processing in sewage work dewatered sludge, but its treatment capacity is few, and efficiency is low.
Summary of the invention
In order to overcome the problem existing in background technology, the purpose of this utility model is to provide a kind of burying base sludge in-situ chemical conditioning device.
The technical solution adopted in the utility model is:
Molten medicine-chest bottom is connected with one end of rubber hose through flow pump, and the other end of rubber hose is provided with a liquid outlet every 0.4m ~ 0.6m, and at each liquid outlet, tapping sleeve is installed respectively at place; On surface, Sludge landfill storehouse, spread successively from bottom to up braided geotextile and the high-strength cystose that has multiple lines and multiple rows hole, the identical plastic draining plate member of difference syndeton on each tapping sleeve; Each plastic draining plate member includes: plastic draining board, hand-type joint, pipe connecting and stainless steel lathe dog; One end of pipe connecting is connected with the mouth of pipe of hand-type joint, and the cell body of hand-type joint is connected with plastic draining board, and pipe connecting, hand-type joint and plastic draining board molectron are inserted into Sludge landfill bottom of the reservior portion through the each hole of high-strength cystose through braided geotextile; The other end of pipe connecting passes high-strength cystose and is connected with the mouth of pipe of tapping sleeve after backing plate, and pipe connecting is inserted in a fastening piece outward, and fastening piece screws in backing plate inside groove screw thread, and backing plate is pressed in the hole of high-strength cystose.
Burying base sludge in-situ of the present utility model chemical conditioning and vacuum preloading decrement method:
Step 1) chemical conditioning: add Fe in the mud of Sludge landfill storehouse
3+amendment, to improve the discharging consolidation characteristic of mud, adds Fe
3+standing 3 ~ 5 days of mud after amendment;
Step 2) vacuum preloading: in Sludge landfill storehouse Sludge Surface, lay sealing membrane, connect vacuum pump, apply negative pressure the mud after nursing one's health is carried out to discharging consolidation, when spacing of prefabricated drain is 0.4m ~ 0.6m, the vacuum preloading treatment time is 60 days ~ 90 days.
Described Fe
3+amendment addition is 0.5% ~ 5% of mud weight, and is configured to the aqueous solution that concentration is 200g/L ~ 400g/L.
Described Fe
3+amendment is FeCl
3or Fe
2(SO
4)
3.
The negative pressure that described vacuum preloading applies is 60kPa～80 kPa.
The beneficial effect the utlity model has is:
1) by add Fe in the mud of Sludge landfill storehouse
3+amendment, has improved the coefficient of consolidation of mud.When spacing of prefabricated drain is 0.4m ~ 0.6m, the vacuum preloading treatment time is 60 days ~ 90 days.
2) can significantly to mud storehouse mud, implement decrement, after processing, the water ratio of mud is reduced to 60% ~ 75%, mud cumulative volume minimizing 50% ~ 60% from 80% ~ 90%;
3) disposable treatment capacity is large: the mud that can simultaneously process in position amount of landfill and reach hundreds of thousands of cubic meter;
4) after decrement, the undrained shear strength of mud is increased to 5 ~ 10kPa, for other processing operation of later stage provides intensity;
5) burying base mud is implemented to in-situ treatment, need not increase the operations such as excavation and transportation newly, avoided secondary pollution, reduced expense simultaneously.
Accompanying drawing explanation
Fig. 1 is burying base sludge in-situ conditioning system structural representation of the present utility model.
Fig. 2 is burying base sludge vacuum prepressing structure schematic diagram of the present utility model.
Fig. 3 is the floor plan schematic diagram of plastic draining board.
Fig. 4 is plastic draining plate member and tapping sleeve connection diagram.
Fig. 5 is plastic draining board and branch drain connection diagram.
Fig. 6 is branch drain and drain header connection diagram.
In figure: 1, molten medicine-chest, 2, flow pump, 3, rubber hose, 4, tapping sleeve, 5, pipe connecting, 6, backing plate, 7, high-strength cystose, 8, hand-type joint, 9, plastic draining board, 10, braided geotextile, 11, fastening piece, 12, stainless steel lathe dog, 13, bolt, 14 Y-junctions, 15 four-way connections, 16, vacuum pump, 17, vacuum meter, 18, valve, 19, drain header, 20, tightness system, 21, branch drain, 22, Sludge landfill storehouse.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As shown in Fig. 1, Fig. 3, Fig. 4, the molten medicine-chest of the utility model 1 bottom is connected with one end of rubber hose 3 through flow pump 2, and the other end of rubber hose 3 is provided with a liquid outlet every 0.4m ~ 0.6m, and at each liquid outlet, tapping sleeve 4 is installed respectively at place.On 22 surfaces, Sludge landfill storehouse, spread successively from bottom to up braided geotextile 10 and the high-strength cystose 7 that has multiple lines and multiple rows hole, the identical plastic draining plate member of difference syndeton on each tapping sleeve 4; Each plastic draining plate member includes: plastic draining board 9, hand-type joint 8, pipe connecting 5 and stainless steel lathe dog 12.One end of pipe connecting 5 is connected with the mouth of pipe of hand-type joint 8, the cell body of hand-type joint 8 is connected with plastic draining board 9, and pipe connecting 5, hand-type joint 8 and plastic draining board 9 molectrons are inserted into Sludge landfill bottom of the reservior portion through the each hole of high-strength cystose 7 through braided geotextile 10.The other end of pipe connecting 5 is connected with the mouth of pipe of tapping sleeve 4 with after backing plate 6 through high-strength cystose 7, and pipe connecting 5 is outer is inserted in a fastening piece 11, and fastening piece 11 screws in backing plate 6 inside groove screw threads, and backing plate 6 is pressed in the hole of high-strength cystose 7.
Concrete operation method:
First on 22 surfaces, Sludge landfill storehouse, lay braided geotextile 10.According to the shape in Sludge landfill storehouse 22 and size, adopt portable sewing machine to sew up splicing to braided geotextile 10.Then from a jiao of Sludge landfill storehouse, move braided geotextile 10 to other one jiao.In Sludge landfill storehouse, 22 surrounding segmentations add iron railing, and braided geotextile 10 is after spread out on 22 surfaces, Sludge landfill storehouse, and its periphery passes through iron wire colligation on iron railing.Braided geotextile 10 after colligation has formed the flexibility that can bear certain pulling force and has covered on 22 surfaces, Sludge landfill storehouse.
From a jiao of Sludge landfill storehouse 22, the high-strength cystose 7 with pre-opened hole is laid in braided geotextile 10.The reserving hole diameter of high-strength cystose 7 is 18cm, and hole spacing is determined according to the spacing of plastic draining board 9, is generally 0.4 m ~ 0.6m.High-strength cystose 7 is laid along Sludge landfill storehouse 22 vertical and horizontal simultaneously, and its long limit adopts respectively band to be connected to strengthen its globality with adjacent cystose with minor face.High-strength cystose 7 after connection and a workplatform of braided geotextile 10 common formation.Because mud has certain viscosity, personnel walk and construct very steady on cystose.
With the edge of a knife, scratch the braided geotextile 10 of cystose bottom, be directly standardized component by manually plugging this plate of plastic draining board 9(in the pre-opened hole of high-strength cystose 7, can buy from market).Before inserting plastic draining board 9, in this drain board one end, hand-type joint 8(being installed is in advance standardized component, can buy from market) and pipe connecting 5.While plugging plastic draining board 9, by this drain board the other end bending 20cm, and use nylon rope colligation, with the stainless steel tube of 0.7mm wall thickness, stab colligation joint subsequently, rapidly plastic draining board 9 is inserted to Sludge landfill bottom of the reservior.Plastic draining board 9 is the passages that add amendment, and as shown in Figure 3, it alternately arranges along vertical, horizontal in 22 planes of Sludge landfill storehouse, to guarantee that medicament can add in landfill mud more equably.
In 22 mud of Sludge landfill storehouse, add Fe
3+amendment.Device is by molten medicine-chest 1, and flow pump 2, rubber hose 3, tapping sleeve 4, pipe connecting 5, hand-type joint 8 and plastic draining board 9 form.
The step of burying base sludge in-situ chemical conditioning is as follows:
In the mud of Sludge landfill storehouse, add Fe
3+amendment, to improve the discharging consolidation characteristic of municipal sludge, adds Fe
3+standing 3 ~ 5 days of mud after amendment;
Concrete operation method:
By Fe
3+amendment adds in molten medicine-chest 1, adds water and is configured to stir and mix after solution.Rubber hose 3 one end are connected with molten medicine-chest 1, and the other end is moved on the high-strength cystose 7 in Sludge landfill storehouse 22, realize the horizontal feed of liquid medicine.Rubber hose 3 according to certain distance install tapping sleeve 4 so that by drug delivery in the plastic draining board 9 of vertical direction.One root rubber pipe 3 connects many plastic draining boards 9, to improve, adds Fe
3+the efficiency of amendment.
As shown in Figure 4, adopt pipe connecting 5 that the tapping sleeve 4 being arranged on rubber hose 3 is connected with the upper end mouth of pipe of hand-type joint 8; The linkage section of tapping sleeve 4 mouths of pipe and pipe connecting 5 adopts stainless steel lathe dog 12 and bolt 13 to carry out fastening; The upper end mouth of pipe of hand-type joint 8 and the linkage section of pipe connecting 5 adopt liquid raw material band to strengthen sealing.The polypropylene board that backing plate 6 is middle perforate, internal aperture is larger than pipe connecting 5, and external diameter is suitable with high-strength cystose 7 hole diameter.Backing plate 6 is slowly pressed in high-strength cystose hole along pipe connecting 5, and its bottom is concordant with 7 ends of high-strength cystose.By fastening piece 11, pipe connecting 5 is fixed on to backing plate 6 upper ends subsequently, to reduce the displacement of adding in amendment process.
By flow pump 2, control the pressure or the flow that add medicament, its flow is adjustable as 0.1L/h ~ 50L/h, and its pressure is adjustable as 10kPa ~ 500kPa.Just started to apply less pressure, amendment solution flow into plastic draining board 9 central layers through rubber hose 3 from molten medicine-chest 1, after basicly stable, increases pump pressure, and amendment solution is ejected in sludge treatment unit through plastic draining board 9 filter membrane levels.The pressure of volume pump or flow can be adjusted according to the water ratio of the degree of depth in Sludge landfill storehouse 22, mud.
After in certain region mud, amendment interpolation finishes, stainless steel lathe dog 12 and bolt 13 outside dismounting pipe connecting 5 are extracted tapping sleeve 4 from pipe connecting 5, and mobile rubber hose 3, to next region, repeats above-mentioned connection, adds amendment step.In the plane, in Sludge landfill storehouse 22, amendment, first after middle row is added, then moves ahead or all rear row interpolations to all successively.After the operation of adding amendment finishes, standing 3 ~ 5 days of mud, guarantees Fe
3+amendment is further diffusion under concentration gradient, and reacts with mud.
The step of Sludge landfill storehouse sludge in-situ vacuum preloading decrement method is as follows:
On Sludge landfill storehouse municipal sludge surface, lay sealing membrane, connect vacuum pump, apply negative pressure the mud after nursing one's health is carried out to discharging consolidation, when spacing of prefabricated drain is 0.4 ~ 0.6m, the vacuum preloading treatment time is 60 days ~ 90 days.
Concrete operation method:
Stainless steel lathe dog 12 and bolt 13 in dismounting Fig. 1 outside pipe connecting 5 are extracted tapping sleeve 4 from pipe connecting 5, and rubber hose 3 is moved to outside Sludge landfill storehouse 22.On the every a line of high-strength cystose 7 hole, along laterally laying respectively branch drain 21, longitudinally every 30m, lay a drain header 19.As shown in Figure 2, connect plastic draining board 9 and branch drain 21, drain header 19; Vacuum pump 16, vacuum meter 17 and valve 18 are installed, are connected drain header 19 and vacuum pump 16.On high-strength cystose 7 surfaces, lay successively two layers of non-woven geotextile and two layers of sealing membrane, composition tightness system 20.In imbedding sludge blanket by sealing membrane, Sludge landfill storehouse 22 surroundings seal.
As shown in Figure 5, the pipe connecting 5 in all plastic draining plate member is connected with branch drain 21 by Y-junction 14 respectively.As shown in Figure 6, branch drain 21 is connected with drain header 19 by four-way connection 15.Branch drain 21 and drain header 19 all adopt corrugated tube, and corrugated tube had both had rigidity, have again certain flexibility, can adapt to the nonaffine deformation on mud top layer.Under sealing membrane, laying non-woven geotextile is mainly to avoid the direct bearing tension of sealing membrane, prevent sealing membrane at cystose boundary by drawing crack.
Examination vacuumizes, and checks whether tightness system leaks gas.Because mud has certain mobility, the vacuum preloading initial stage, slowly increase the turn on pump amount of vacuum pump 16, under film, vacuum tightness slowly improves, and under 10 days caudacorias, vacuum tightness is increased to 60kPa ~ 80kPa.The relation of vacuum tightness and surface settlement and time under field monitoring film, after mud decrement reaches requirement, removal vacuum load.
In the utility model, with high-strength cystose 7, can directly from factory, customize and be transported to Sludge landfill storehouse 22 according to the position of breadth size and pre-opened hole.The adding of agent system that molten medicine-chest 1, flow pump 2, rubber hose 3, tapping sleeve 4 form, has enterprise that the product of corresponding or similar functions can be provided at present, can customize dimension and size according to processing requirements.
Claims (1)
1. a burying base sludge in-situ chemical conditioning device, it is characterized in that: molten medicine-chest (1) bottom is connected with one end of rubber hose (3) through flow pump (2), the other end of rubber hose (3) is provided with a liquid outlet every 0.4m ~ 0.6m, at each liquid outlet place, tapping sleeve (4) is installed respectively; On surface, Sludge landfill storehouse (22), spread successively from bottom to up braided geotextile (10) and have the high-strength cystose (7) in multiple lines and multiple rows hole, the upper identical plastic draining plate member of syndeton respectively of each tapping sleeve (4); Each plastic draining plate member includes: plastic draining board (9), hand-type joint (8), pipe connecting (5) and stainless steel lathe dog (12); One end of pipe connecting (5) is connected with the mouth of pipe of hand-type joint (8), the cell body of hand-type joint (8) is connected with plastic draining board (9), and pipe connecting (5), hand-type joint (8) and plastic draining board (9) molectron are inserted into bottom, Sludge landfill storehouse (22) through the each hole of high-strength cystose (7) through braided geotextile (10); The other end of pipe connecting (5) is connected with the mouth of pipe of tapping sleeve (4) with after backing plate (6) through high-strength cystose (7), the outer fastening piece (11) that is inserted in of pipe connecting (5), fastening piece (11) screws in backing plate (6) inside groove screw thread, and backing plate (6) is pressed in the hole of high-strength cystose (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492091.6U CN203545861U (en) | 2013-08-13 | 2013-08-13 | In-situ chemical conditioning device for landfill library sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492091.6U CN203545861U (en) | 2013-08-13 | 2013-08-13 | In-situ chemical conditioning device for landfill library sludge |
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|---|---|
| CN203545861U true CN203545861U (en) | 2014-04-16 |
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ID=50464007
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|---|---|---|---|
| CN201320492091.6U Expired - Fee Related CN203545861U (en) | 2013-08-13 | 2013-08-13 | In-situ chemical conditioning device for landfill library sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827256A (en) * | 2020-07-09 | 2020-10-27 | 浙江海逸环科院有限公司 | Bottom mud concentration and solidification method and device |
-
2013
- 2013-08-13 CN CN201320492091.6U patent/CN203545861U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111827256A (en) * | 2020-07-09 | 2020-10-27 | 浙江海逸环科院有限公司 | Bottom mud concentration and solidification method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20140813 |
|
| EXPY | Termination of patent right or utility model |