CN102367193A - Method for landfilling and processing municipal sludge by using geotechnical filter bag - Google Patents
Method for landfilling and processing municipal sludge by using geotechnical filter bag Download PDFInfo
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- CN102367193A CN102367193A CN2011102717157A CN201110271715A CN102367193A CN 102367193 A CN102367193 A CN 102367193A CN 2011102717157 A CN2011102717157 A CN 2011102717157A CN 201110271715 A CN201110271715 A CN 201110271715A CN 102367193 A CN102367193 A CN 102367193A
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Abstract
The invention relates to a method for landfilling and processing municipal sludge by using a geotechnical filter bag, which comprises the following steps: first step, establishing a sludge dehydration landfill with an anti-seepage barrier layer and a sewage collection emission system; second step, placing the geotechnical filter bag with water permeability used for fixing the sludge on the sludge dehydration landfill; third step, filling sludge in the geotechnical filter bag, and dehydrating the filled sludge in the geotechnical filter bag; fourth step, landfilling the sludge when the water content of the filled sludge in the geotechnical filter bag reach the design standard. The method for landfilling and processing municipal sludge by using a geotechnical filter bag has the advantages of good effect for fixing sludge, high dehydration efficiency and easy operation. The stacked geotechnical filter bags reduce the required large land occupation for sludge natural anhydration treatment substantially. Compared with mechanical dehydration, the addition of a polymeric flocculant for dehydrating sludge reduces the energy consumption substantially. The components are easy for transporting, and the enforcement cost is low.
Description
Technical field
The present invention relates to environmental improvement fields such as sludge treatment disposal, Solid waste disposal, especially relate to a kind of method of utilizing geotechnological filter bag landfill disposal municipal sludge.
Background technology
Along with the develop rapidly of China's economic construction, requirement on environmental protection to be paid attention to day by day, the construction of municipal sewage plant is increasing, and the sludge quantity that correspondingly sewage work produced is also increasing.Mud be a kind of water ratio of in sewage treatment process, forming high contain the solid-liquid body, volume can reach its contained solid volumetrical several times even tens times.Sludge from wastewater treatment plant has the water ratio height, and volume is big, and is difficult fixing, produces characteristics such as foul gas, and the purpose that sludge treatment is disposed is subtracting appearanceization, stabilization, and innoxious, resource turns to principle.The key of mud landfill is to reduce sludge moisture content, reduces the volume of mud, reduces the pressure of follow-up structures and processing unit.
Sludge dewatering technology of the prior art has: belt pressure filtering technique, centrifuge dehydration technology, filter press is technological and natural drying technique.First three is a mechanical dehydration, but its moisture percentage in sewage sludge is still higher, and usually between 78%-83%, and specific energy consumption is higher; Latter's nature mummification floor space is big, receives weather effect big, can produce stench, and because the bed mud in the stockyard is exposed, directly contacts with surrounding environment, and the fruit surplus water treatment in stockyard is not up to standard for another example, will cause secondary pollution to peripheral water body, underground water and soil.
Summary of the invention
The purpose of this invention is to provide a kind of method of utilizing geotechnological filter bag landfill disposal municipal sludge, so that address the above problem.
In order to realize the foregoing invention purpose, the technical scheme that the present invention adopts is following:
A kind of method of utilizing geotechnological filter bag landfill disposal municipal sludge comprises the steps:
The first step is set up the sludge dewatering landfill yard with antiseepage barrier layer and sewage collecting guide system;
In second step, on said sludge dewatering landfill yard, lay and have the fixedly geotechnological filter bag of mud and water-permeable;
The 3rd step, in said geotechnological filter bag, fill mud, and with the sludge dewatering of filling in the said geotechnological filter bag;
The 4th step, when the water ratio of the mud of treating to fill in the said geotechnological filter bag reaches standard, the said mud of landfill.
Said antiseepage barrier layer comprises composite earthwork filter screen, underground water lead layer, composite earthwork filter screen, clay seam, sodium bentonite pad, HDPE geomembrane, non-woven geotextile and the composite earthwork drainage network of laying successively from top to bottom; Said antiseepage barrier layer is kept apart the ground and the mud of said sludge dewatering landfill yard; The thickness of said clay seam is not less than 50cm, and PQ is not more than 1.0 * 10
-5Cm/s.
Said sewage collecting guide system comprises that the transudate that is located on the said antiseepage barrier layer collects ditch, gravel layer of displacement and transudate and derive equipment; Said gravel layer of displacement is higher than said transudate and collects ditch; The said transudate equipment of deriving is collected ditch with said transudate and is connected; The thickness of said gravel layer of displacement is not less than 30cm, and said geotechnological filter bag is positioned on the said gravel layer of displacement; Said antiseepage barrier layer keeps being not less than 2% the gradient from the center on the direction of said transudate collection ditch.
In said the 3rd step, in said geotechnological filter bag, fill before the mud, in mud, added polymeric flocculant and uniform mixing.
In said the 3rd step, in the process of the sludge dewatering of in said geotechnological filter bag, filling, adopt little equipment that shakes that geotechnological filter bag is carried out slight vibration.
In said the 3rd step, when in said geotechnological filter bag, filling mud,, in geotechnological filter bag, inject an amount of mud according to the sludge dewatering situation in batches, treat to inject again after sludge dewatering is shunk next time, fill up geotechnological filter bag until dewatered sludge.
In said the 3rd step, the transudate that the sludge dewatering of filling in the said geotechnological filter bag is formed is through the discharge of said sewage collecting guide system.
In said the 4th step, the water ratio of the mud of treating to fill in the said geotechnological filter bag reaches 60% when following, selects the landfill scheme, and together with the said mud of said geotechnological filter bag landfill, said landfill scheme is the disposal of original position landfill.
Said geotechnological filter bag piles up placement on said sludge dewatering landfill yard.
When carrying out piling up of said geotechnological filter bag when placing, must satisfy following condition:
The first, when setting up said sludge dewatering landfill yard, said ground is done compaction treatment;
The second, before piling up the said geotechnological filter bag in upper strata, the said geotechnological filter bag of lower floor is wanted abundant dehydrating and curing;
The 3rd, pile up the fissure of displacement form that adopts, stagger and pile up in the border of levels geotechnique filter bag;
The 4th, fill the support pad that prevents geotechnological filter bag unbalance stress in the slit in lower floor between the adjacent two geotechnological filter bags.
The so-called original position landfill of the present invention is disposed and is meant: directly carry out the situation of landfill after the sludge dewatering at this dehydration landfill yard, mud need not break bag and handle, and landfill covers in sludge dewatering landfill yard original place.
The present invention can comprise following system:
1, fill system: adopt sludge pump to carry main pipe line to be delivered to the sludge dewatering landfill yard,, fill the flow that mouthful valve is controlled mud through filter bag through sludge-filled pipe coupling to geotechnological filter bag with the mud lifting and through mud.
2, medicine system: in the mud course of conveying, polymeric flocculant is pumped into the mud mixing pit, improve rate of water loss and effect, control dosing and add dose with dosing pump and under meter through the drug delivery pipeline.
3, transudate antiseepage barrier and gathering system: lay the antiseepage barrier layer in dehydration landfill yard bottom, it is underground to prevent that the mud transudate from penetrating into, polluted underground water and soil.According to the situation of dehydration landfill yard engineering and hydrogeological conditions, select suitable antiseepage barrier layer type.In dehydration, have a large amount of mud transudates and produce, carry out guide so will lay the gravel layer of displacement that is not less than 30cm to deviating from sewage, and transudate collection ditch is set in downstream in dehydration landfill yard bottom, transudate is collected.
Compared with prior art, the invention has the advantages that:
1. fixedly mud is effective, dewatering efficiency is high for method of the present invention, simple to operate;
2. geotechnological filter bag piles up the big problem of the mud nature required floor space of drying and other treatment that greatly reduces of placing among the present invention;
3. add polymeric flocculant among the present invention mud is dewatered,, greatly reduce energy consumption with respect to mechanical dehydration;
4. the extremely convenient transportation of each assembly of the present invention, implementation cost is cheap.
Description of drawings
Fig. 1 is a synoptic diagram of the present invention;
Fig. 2 is the partial enlarged drawing of antiseepage barrier layer among Fig. 1;
Synoptic diagram when Fig. 3 piles up for geotechnological filter bag.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the present invention is solved, below in conjunction with accompanying drawing and embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
A kind of method of utilizing geotechnological filter bag landfill disposal municipal sludge as shown in Figure 1 comprises the steps:
The first step is set up the sludge dewatering landfill yard with antiseepage barrier layer 1 and sewage collecting guide system, permeates the ground in order to prevent transudate 10, and underground water and soil earth is caused secondary pollution, so should antiseepage barrier layer 1 be set in dehydration landfill yard bottom.According to the situation of dehydration landfill yard engineering and hydrogeological conditions, to select in the type present embodiment of suitable antiseepage barrier layer 1, the structure of antiseepage barrier layer 1 is (like Fig. 2) from top to bottom: the 1. thick composite earthwork of 6.3mm drainage network (not shown); 2. 600g/m
2Long filament non-woven geotextile 4; 3. the thick HDPE geomembrane 3 of 2mm; 4. 4800g/m
2Sodium bentonite pad (not shown); 5. clay resist under the film, promptly clay seam 2: clay thickness is not less than 50cm, and PQ is not more than 1.0 * 10-5cm/s; 6. 400g/m
2Composite earthwork filter screen (not shown); 7. underground water lead layer (not shown): thickness is not less than the gravel bed (can not establishing when long-term water level of underground water and top water-level buried depth surpass 15m) of 30cm; 8. 400g/m
2Composite earthwork filter screen (not shown); Said ground 5 for tamping under the said antiseepage barrier layer 1.Said antiseepage barrier layer 1 can be kept apart the ground 5 of said sludge dewatering landfill yard with mud 6; Said sewage collecting guide system comprises that the transudate that is located on the said antiseepage barrier layer 1 collects ditch 7, gravel layer of displacement 8 and transudate and derive equipment; Said transudate derivation equipment is transudate delivery line and submersible sewage pump (not shown); Said gravel layer of displacement 8 is higher than said transudate and collects ditch 7; Said transudate delivery line and submersible sewage pump are collected ditch 7 with said transudate and are connected, and the thickness of said gravel layer of displacement 8 is not less than 30cm; Said antiseepage barrier layer 1 keeps being not less than 2% the gradient from the center on the direction of said transudate collection ditch 7, is convenient to the guide and the collection of transudate 10; Gravel in the said gravel layer of displacement 8 is ganoid cobble, prevents that geotechnological filter bag 9 from being punctured by sharp-pointed gravel under weight;
Second step, on said sludge dewatering landfill yard, to lay and have the fixedly geotechnological filter bag 9 of mud and water-permeable, said geotechnological filter bag 9 is positioned on the said gravel layer of displacement 8;
The 3rd step, in said geotechnological filter bag 9, fill mud 6, and with the said mud of filling in the said geotechnological filter bag 96 dehydrations; When in said geotechnological filter bag 9, filling mud 6,, in geotechnological filter bag 9, inject an amount of mud 6 in batches, treat to inject again after sludge dewatering is shunk next time, fill up geotechnological filter bag 9 until dewatered sludge 6, in order to avoid 9 spallings of geotechnological filter bag according to the sludge dewatering situation; In said geotechnological filter bag 9, fill before the mud 6, in mud, add polymeric flocculant and uniform mixing raising rate of water loss and effect, control dosing speed and add dose with dosing pump and under meter simultaneously; In the process that the said mud 6 of in said geotechnological filter bag 9, filling dewaters, adopt little equipment that shakes that geotechnological filter bag 9 is carried out slight vibration, accelerate the dewatering speed of said mud 6; The transudate 10 that the said mud of filling in the said geotechnological filter bag 96 dehydrations are formed is through the discharge of said sewage collecting guide system;
When a large amount of mud 6 needs to handle, a large amount of said geotechnological filter bags 9 is piled up placement on said sludge dewatering landfill yard, can farthest utilize vertical space like this, in the reduction floor space, accelerate the speed of sludge dewatering treatment; But, pile up placement and must satisfy following condition: the first, when setting up said sludge dewatering landfill yard, said ground 5 is done compaction treatment, reach standard, to guarantee enough bearing capacities; The second, before piling up the said geotechnological filter bag 9 in upper strata, the said geotechnological filter bag 9 of lower floor is wanted abundant dehydrating and curing; The 3rd, pile up the fissure of displacement form that adopts, stagger and pile up in the border of levels geotechnique filter bag 9; The 4th, fill support pad 11 in the slit in lower floor between the adjacent two geotechnological filter bags 9, prevent upper strata filter bag unbalance stress, it is whole unstable to cause filter bag to pile up, and run-off the straight is caved in;
The 4th step, treat that sludge treatment finishes and said geotechnological filter bag 9 in the water ratio of the mud 6 of filling reach 60% when following, selection original position landfill disposal scheme, together with said geotechnological filter bag 9 landfills on this ground.
Present embodiment in the specific implementation; Its principle is following: at first; Mud 6 adds polymeric flocculant through the geotechnological filter bag 9 that the pipeline input arranges in this process, the mud 6 that is packed into geotechnological filter bag 9 is under action of gravity and stowing pressure effect; With water sepn, water is discharged geotechnological filter bag 9 by the slit of geotechnological filter bag 9.In order to accelerate sludge dewatering speed, so adopt little equipment that shakes that geotechnological filter bag 9 is carried out slight vibration.
Secondly, in time discharge the dehydration landfill yards,, be used for the guide of transudate 10 so one layer thickness is not less than the gravel of 30mm on antiseepage barrier layer upper berth in order to make transudate 10.
More than through the detailed description of concrete and preferred embodiment the present invention; But those skilled in the art should be understood that; The present invention is not limited to the above embodiment; All within spirit of the present invention and principle, any modification of being done, be equal to replacement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a method of utilizing geotechnological filter bag landfill disposal municipal sludge is characterized in that, comprises the steps:
The first step is set up the sludge dewatering landfill yard with antiseepage barrier layer and sewage collecting guide system;
In second step, on said sludge dewatering landfill yard, lay and have the fixedly geotechnological filter bag of mud and water-permeable;
The 3rd step, in said geotechnological filter bag, fill mud, and with the sludge dewatering of filling in the said geotechnological filter bag;
The 4th step, when the water ratio of the mud of treating to fill in the said geotechnological filter bag reaches standard, the said mud of landfill.
2. according to the method for the geotechnological filter bag landfill disposal of the described utilization of claim 1. municipal sludge; It is characterized in that: said antiseepage barrier layer comprises composite earthwork filter screen, underground water lead layer, composite earthwork filter screen, clay seam, sodium bentonite pad, HDPE geomembrane, non-woven geotextile and the composite earthwork drainage network of laying successively from top to bottom; Said antiseepage barrier layer is kept apart the ground and the mud of said sludge dewatering landfill yard; The thickness of said clay seam is not less than 50cm, and PQ is not more than 1.0 * 10
-5Cm/s.
3. the method for the geotechnological filter bag landfill disposal of utilization according to claim 2 municipal sludge; It is characterized in that: said sewage collecting guide system comprises that the transudate that is located on the said antiseepage barrier layer collects ditch, gravel layer of displacement and transudate and derive equipment; Said gravel layer of displacement is higher than said transudate and collects ditch; The said transudate equipment of deriving is collected ditch with said transudate and is connected; The thickness of said gravel layer of displacement is not less than 30cm, and said geotechnological filter bag is positioned on the said gravel layer of displacement; Said antiseepage barrier layer keeps being not less than 2% the gradient from the center on the direction of said transudate collection ditch.
4. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3; It is characterized in that: in said the 3rd step; In said geotechnological filter bag, fill before the mud, in mud, added polymeric flocculant and uniform mixing.
5. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3; It is characterized in that: in said the 3rd step; In the process of the sludge dewatering of in said geotechnological filter bag, filling, adopt little equipment that shakes that geotechnological filter bag is carried out slight vibration.
6. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3; It is characterized in that: in said the 3rd step; When in said geotechnological filter bag, filling mud,, in geotechnological filter bag, inject an amount of mud according to the sludge dewatering situation in batches; Treat to inject again after sludge dewatering is shunk next time, fill up geotechnological filter bag until dewatered sludge.
7. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3; It is characterized in that: in said the 3rd step, the transudate that the sludge dewatering of filling in the said geotechnological filter bag is formed is through the discharge of said sewage collecting guide system.
8. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3; It is characterized in that: in said the 4th step; The water ratio of the mud of treating to fill in the said geotechnological filter bag reaches 60% when following; Select the landfill scheme, together with the said mud of said geotechnological filter bag landfill, said landfill scheme is disposed for the original position landfill.
9. according to the method for one of any geotechnological filter bag landfill disposal of the described utilization municipal sludge of claim 1 to 3, it is characterized in that: said geotechnological filter bag piles up placement on said sludge dewatering landfill yard.
10. the method for the geotechnological filter bag landfill disposal of utilization according to claim 10 municipal sludge is characterized in that: when carrying out piling up of said geotechnological filter bag when placing, must satisfy following condition:
The first, when setting up said sludge dewatering landfill yard, said ground is done compaction treatment;
The second, before piling up the said geotechnological filter bag in upper strata, the said geotechnological filter bag of lower floor is wanted abundant dehydrating and curing;
The 3rd, pile up the fissure of displacement form that adopts, stagger and pile up in the border of levels geotechnique filter bag;
The 4th, fill the support pad that prevents geotechnological filter bag unbalance stress in the slit in lower floor between the adjacent two geotechnological filter bags.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104860502A (en) * | 2015-05-08 | 2015-08-26 | 天津市海顺交通工程设计有限公司 | Hydraulic geotextile bag dewatering box |
| CN104923542A (en) * | 2015-05-25 | 2015-09-23 | 江苏鑫泰岩土科技有限公司 | S-shaped filling infiltration bag for silt of river channels and lakes, mud and sand of tailings and building mud, manufacturing method thereof and application method thereof |
| CN107098569A (en) * | 2017-06-19 | 2017-08-29 | 中冶节能环保有限责任公司 | The method and system that a kind of dredged sediment is disposed temporarily |
| CN108380631A (en) * | 2018-02-24 | 2018-08-10 | 航天慧能（江苏）环境工程有限公司 | A kind of refuse landfill waste treatment method |
| CN108726820A (en) * | 2017-04-21 | 2018-11-02 | 中国二十冶集团有限公司 | The innoxious in-situ treatment method of riverway sludge |
| CN110204164A (en) * | 2019-07-15 | 2019-09-06 | 上海市城市建设设计研究总院（集团）有限公司 | Pipe bag sludge fast dewatering special vibrating device |
| CN113619828A (en) * | 2021-06-25 | 2021-11-09 | 长三角(义乌)生态环境研究中心 | Shunt device for filling of geotextile bags |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104860502A (en) * | 2015-05-08 | 2015-08-26 | 天津市海顺交通工程设计有限公司 | Hydraulic geotextile bag dewatering box |
| CN104860502B (en) * | 2015-05-08 | 2017-03-29 | 天津市海顺交通工程设计有限公司 | A kind of hydraulic type soil engineering bag dewatering box |
| CN104923542A (en) * | 2015-05-25 | 2015-09-23 | 江苏鑫泰岩土科技有限公司 | S-shaped filling infiltration bag for silt of river channels and lakes, mud and sand of tailings and building mud, manufacturing method thereof and application method thereof |
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| CN107098569A (en) * | 2017-06-19 | 2017-08-29 | 中冶节能环保有限责任公司 | The method and system that a kind of dredged sediment is disposed temporarily |
| CN107098569B (en) * | 2017-06-19 | 2023-05-05 | 中冶节能环保有限责任公司 | Method and system for temporarily disposing dredging sludge |
| CN108380631A (en) * | 2018-02-24 | 2018-08-10 | 航天慧能（江苏）环境工程有限公司 | A kind of refuse landfill waste treatment method |
| CN110204164A (en) * | 2019-07-15 | 2019-09-06 | 上海市城市建设设计研究总院（集团）有限公司 | Pipe bag sludge fast dewatering special vibrating device |
| CN113619828A (en) * | 2021-06-25 | 2021-11-09 | 长三角(义乌)生态环境研究中心 | Shunt device for filling of geotextile bags |
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| CN102367193B (en) | 2014-01-01 |
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