CN101486526B - Dewatered sludge landfill method - Google Patents

Dewatered sludge landfill method Download PDF

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Publication number
CN101486526B
CN101486526B CN2009100463731A CN200910046373A CN101486526B CN 101486526 B CN101486526 B CN 101486526B CN 2009100463731 A CN2009100463731 A CN 2009100463731A CN 200910046373 A CN200910046373 A CN 200910046373A CN 101486526 B CN101486526 B CN 101486526B
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China
Prior art keywords
sludge
landfill
geotextile bag
mud
feed bin
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CN2009100463731A
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Chinese (zh)
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CN101486526A (en
Inventor
方建民
卢成洪
姚远
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上海市政工程设计研究总院
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Publication of CN101486526A publication Critical patent/CN101486526A/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/30Landfill technologies aiming to mitigate methane emissions

Abstract

The invention discloses a dewatered sludge landfill method which comprises the following steps: A. incoming sludge is discharged into a material cabin; and the bottom part of the material cabin is provided with a cut connected with a sludge transmission pipeline; B. a geotextile bag is arranged in a landfill yard; and one side of the geotextile bag is provided with at least one feed port; C. the sludge transmission pipeline is connected to the feed port of the geotextile bag; and D. the sludge in the material cabin is filled into the geotextile bag by the sludge transmission pipeline under anexogenic action. The method solves the sludge paving problem during the landfill operation, realizes the goal of rain water and sewage separation, prevents the environmental pollution problem caused by the odor dispersing of the traditional sludge landfill, and increases the integral stability of sludge pile. The dewatered sludge landfill method overcomes the operation of the traditional sludge landfill, the water and sewage separation, the odor control and the pile stability problems, and is suitable to be used on the landfill yards for the sludge of various types and solid wastes.

Description

A kind of dewatered sludge landfill method

Technical field:

The present invention relates to the technical field that dewatered sludge of urban sewage plant is handled, specifically a kind of moisture content is 60~90% dewatered sludge of urban sewage plant burying method.

Background technology:

At present, both at home and abroad Treatment of Sludge, method of disposal are numerous, general adopt concentrate, certain several method is combined into concrete handling process in different disposal such as digestion, dehydration, mummification, burning, compost and landfill and the method for disposal.In Treatment of Sludge, generally include concentrated and two methods of dewatering, follow-up processing method of disposal then has multiple choices.

The selection of Treatment of Sludge process Selection and mud is closely related, and different compound modes can be arranged.And the selection of method of disposal is subjected to the restriction of conditions such as local nature, economy, politics.For example, land resource is abundant, and the few big city of evaporation capacity of rainfall can select that operating cost is low, the better simply direct landfill scheme of management; And those land resources are at full stretch, and mummification, incinerating method then can be selected in economic flourishing city; The use of compost method must take into full account the market factor again.

According to interrelated data, in European Community inside, about 40% mud is disposed by landfill, and Greece, Luxembourg and Italy respectively have 90%, 80% and 85% mud to dispose by landfill, and the U.S., has 48% mud to dispose by landfill approximately in nineteen ninety.

China is vast in territory, takes it easy and the economically less developed region in land resource, and for a comparatively long period of time, sanitary landfills will be the main method of sludge treatment.The soil mechanics index of mud has a significant impact the stable of mud landfill body and landfill operation, and high water content sludge landfill subject matter is insufficient strength, can't carry out the landfill operation.Secondly can produce serious foul smell behind mud landfill, but traditional burying method can't cover to its surface, directly influence environment.Also cause the rain dirt not shunt and can not in time cover, make sludge landfill become large-scale sludge concentration tank, cause image dirty, random, difference, restricted the development that the mud landfill is disposed.

Summary of the invention:

The object of the present invention is to provide a kind of dewatered sludge landfill method, overcome the dirty shunting of operation, rain, ozone Control and the heap body stable problem of traditional sludge landfill.

To achieve these goals, technical scheme of the present invention is: a kind of dewatered sludge landfill method may further comprise the steps: A, will advance factory's mud and be discharged into feed bin, the feed bin bottom is provided with opening and is connected with the sludge carrier pipe road; B, geotextile bag is placed in the landfill yard, this geotextile bag one side is provided with at least one charging aperture; C, the sludge carrier pipe road is connected to the geotextile bag charging aperture; D, with the mud in the feed bin under external force packs in the geotextile bag by the sludge carrier pipe road.When moisture percentage in sewage sludge is higher, can in mud, add the time-delay curing agent, by special agitating device, namely accelerate the curing of mud, do not influence the conveying of mud again.

The problem that paves of mud when this method has solved landfill operation has realized the dirty engineering purpose of shunting of rain, has prevented the problem of environmental pollution that the diffusion of traditional sludge landfill foul smell causes, and has increased the resistance to overturning of mud heap body.The present invention has overcome the dirty shunting of operation, rain, ozone Control and the heap body stable problem of traditional sludge landfill, suits to use at various types of mud and solid waste landfill site.

Description of drawings:

Fig. 1 is general layout of the present invention

Fig. 2 is the structural representation in landfill district

Fig. 3 is mud pack schematic diagram

Fig. 4 is mud feed bin layout drawing

The specific embodiment

The invention will be further described below in conjunction with drawings and Examples.

A kind of dewatered sludge landfill method may further comprise the steps: A, will advance factory's mud and be discharged into feed bin 1, feed bin 1 bottom is provided with opening and is connected with sludge carrier pipe road 2; B, geotextile bag 3 is placed in the landfill yard, these geotextile bag 3 one sides are provided with a plurality of charging apertures 4, general wide 1.5m~10m, long 10m~60m.The geotextile bag the selection of material is for spinning geotextile, or long and short fine needling non-woven geotextiles.C, the sludge carrier pipe road is connected to the geotextile bag charging aperture; D, with the mud in the feed bin under the effect of external force 5, pack in the geotextile bag 3 by the sludge carrier pipe road.The general wide 1.5m~10m of geotextile bag, long 10m~60m.This mud advance before the factory through dehydration to moisture content be 60~90%.Among the step C, the sludge carrier pipe road is provided with a plurality of discharging openings 10, to the geotextile bag filler, utilizes pipeline that the discharging opening 10 in sludge carrier pipe road 2 is connected with the charging aperture 4 of geotextile bag 3 as need.Utilize among the step D external force with the mud in the feed bin 1 by sludge carrier pipe road 2 geotextile bag 3 of packing into, according to the difference of mud fed distance, required external force is from 0.15MPa~25MPa.The external force effect can arrange tubing pump 9 as screw pump, plunger displacement pump etc. at conveyance conduit, operating pressure is generally 2MPa~25MPa, power by this screw pump and plunger displacement pump is delivered to mud in the geotextile bag, the potential energy that also can utilize feed bin to produce, and the feed bin height is generally 3~15m.When moisture percentage in sewage sludge is higher, can between feed bin and sludge pipe, add the agitating device (not shown), in agitating device, throw in the time-delay curing agent to mud, be transported to geotextile bag by the sludge carrier pipe road again after mixing by agitating device, both accelerate the curing of mud, do not influenced the conveying of mud again.According to one embodiment of present invention, time-delay curing agent sampling calcium oxide, according to the difference of moisture content, the input weight of calcium oxide is 5%~15% of mud weight.

The landfill yard bottom is provided with impervious barrier 6 and oozes drop liquid lead layer 11.

Common practices following setting on down:

● basalis: smooth substrate

● underground water guide system: be generally broken (ovum) stone layer, thickness 150~300mm; Or with the french drain arranged in form.

● film lower protective layer: be generally and be not less than 600g/m 2Geotextiles or compacting clay.

● impervious barrier (antiseepage film): be generally the HDPE film

● antiseepage film protective layer: be generally and be not less than 600g/m 2Geotextiles or compacting clay.

● ooze drop liquid lead layer: be generally grating broken (ovum) stone, thickness is generally 300~600mm.

● separation layer: lightweight is spun geotextiles.

Geotextile bag is deposited on the separation layer.Heap has multilayer geotextile bag 3 in the landfill yard, is provided with interim cover layer 7 on uppermost geotextile bag surface.The landfill yard edge is provided with anchoring ditch 8.This interim cover layer can be waterproof cover layers such as plastics waterproof cloth.The geotextile bag the selection of material is for spinning geotextile, or long and short fine needling non-woven geotextiles.Mud landfill district can be household refuse landfill sites or single sludge landfill, and the landfill yard type can be plain type or mountain valley-type.

In general, a mud landfill district can be provided with 3~100 geotextile bag, and sludge carrier pipe is provided with 1~10 discharging opening.The capacity of each geotextile bag is 100~1000m 3Each geotextile bag has 1~15 charging aperture.The geotextile bag multilayer stacks, and operated by rotary motion is good for 2~15 layers.

Claims (3)

1. dewatered sludge landfill method may further comprise the steps: A, will advance factory's mud and be discharged into feed bin, the feed bin bottom is provided with opening and is connected with the sludge carrier pipe road, adds agitating device between feed bin and sludge pipe; B, geotextile bag is placed in the landfill yard, this geotextile bag one side is provided with at least one charging aperture; C, the sludge carrier pipe road is connected to the geotextile bag charging aperture; D, with the mud in the feed bin under external force, pack in the geotextile bag by the sludge carrier pipe road, in agitating device, add the time-delay curing agent to mud, be transported to geotextile bag by the sludge carrier pipe road again after mixing by agitating device, wherein heap has the multilayer geotextile bag in the landfill yard, be provided with interim cover layer on uppermost geotextile bag surface, be provided with the anchoring ditch at the landfill yard edge, the landfill yard bottom is provided with basalis successively, underground water guide system, described underground water guide system is metalling; The film lower protective layer adopts to be not less than 600g/m 2Geotextiles; Impervious barrier adopts the HDPE film; The antiseepage film protective layer adopts to be not less than 600g/m 2Geotextiles; Ooze drop liquid lead layer, adopt graded broken stone; And separation layer, adopt lightweight to spin geotextiles.
2. dewatered sludge landfill method according to claim 1, it is characterized in that: the external force of utilizing among the step D is at conveyance conduit tubing pump to be set, and under this tubing pump effect mud is delivered in the geotextile bag.
3. dewatered sludge landfill method according to claim 1 is characterized in that: utilize the potential energy of external force for utilizing feed bin to produce among the step D, the feed bin height is generally 3~15m.
CN2009100463731A 2009-02-19 2009-02-19 Dewatered sludge landfill method CN101486526B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN101486526B true CN101486526B (en) 2013-08-28

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2699493T3 (en) 2011-04-22 2017-07-31 James Joseph Manno Method for the treatment of drilling wastes and coal combustion residues
CN104418430A (en) * 2013-09-06 2015-03-18 浦华环保有限公司 Device and method for treating activated sludge wastewater
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417012A1 (en) * 1994-05-13 1995-11-16 Saechsische Umweltschutz Consu Prodn. of soil-like landfill capping material
CN1478610A (en) * 2002-08-28 2004-03-03 中国科学院武汉岩土力学研究所 Method of refill spent mining field using city solid garbage
CN2706510Y (en) * 2004-04-05 2005-06-29 中港第一航务工程局第一工程公司 Solidified soil bag dyke core structure for coffer dyke and dam and bank revetment
CN101050046A (en) * 2007-05-10 2007-10-10 上海交通大学 Treatment method for solidifying sludge of sewage plant in city
CN101254996A (en) * 2008-03-24 2008-09-03 上海明诺环境科技有限公司 Method for treating dehydrated sludge of domestic sewage treatment plant
CN201109749Y (en) * 2007-11-06 2008-09-03 杭州新源环境工程有限公司 Burying type sewage sludge storage and component type charge-in system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417012A1 (en) * 1994-05-13 1995-11-16 Saechsische Umweltschutz Consu Prodn. of soil-like landfill capping material
CN1478610A (en) * 2002-08-28 2004-03-03 中国科学院武汉岩土力学研究所 Method of refill spent mining field using city solid garbage
CN2706510Y (en) * 2004-04-05 2005-06-29 中港第一航务工程局第一工程公司 Solidified soil bag dyke core structure for coffer dyke and dam and bank revetment
CN101050046A (en) * 2007-05-10 2007-10-10 上海交通大学 Treatment method for solidifying sludge of sewage plant in city
CN201109749Y (en) * 2007-11-06 2008-09-03 杭州新源环境工程有限公司 Burying type sewage sludge storage and component type charge-in system
CN101254996A (en) * 2008-03-24 2008-09-03 上海明诺环境科技有限公司 Method for treating dehydrated sludge of domestic sewage treatment plant

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