CN105000787A - Sludge dredging bag and sludge dredging method - Google Patents
Sludge dredging bag and sludge dredging method Download PDFInfo
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- CN105000787A CN105000787A CN201510544726.6A CN201510544726A CN105000787A CN 105000787 A CN105000787 A CN 105000787A CN 201510544726 A CN201510544726 A CN 201510544726A CN 105000787 A CN105000787 A CN 105000787A
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- bag
- mud
- desilting
- geotechnological
- sludge
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Abstract
The invention discloses a sludge dredging bag which comprises a bag body and structures, such as a water inlet and an exhaust port, wherein the water inlet and the exhaust port are formed in the bag body. The invention further discloses a method for dredging by using the sludge dredging bag. By adopting the sludge dredging bag provided by the invention for sludge dredging, moisture content of watery sludge before dehydrating is generally above 98 percent, after dehydrating by using the method, the moisture content of the sludge can be reduced to about 70 percent, after being exposed under the blazing sun and naturally air-dried, the moisture content of the sludge can be further reduced to about 50 percent, treatment capability equivalent to that of a common sludge drying device is realized, and the method has the advantages that the energy consumption is low, the running cost is reduced and the like.
Description
Technical field
The present invention relates to the desilting field of the water bottom depositions such as natural water, municipal sewage system and refuse landfill, particularly a kind of mud desilting bag and mud dredging method.
Background technology
Water is the resource that the mankind depend on for existence, and on the earth, the area of 2/3rds is awash.Among these water resourcess, river only accounts for 0.006%, but the mankind but make use of 54% of river waterr resources, can find out the importance in river.Most of river of present China all receives pollution, and fast-developing economy but brings the destruction to environment, and central particularly serious with the pollution of water resources, particularly the pollution of river waterr resources is particularly serious especially.Containing a large amount of heavy metal substances among its bed-silt of the river that water body is polluted, these heavy metal substances can be released and enter among water body under certain conditions, cause water quality to degenerate, and become the source of water pollution.A large amount of pollution substances can be deposited in water bottom silt seam, not only affect water quality, and be unfavorable for very much natural water self-cleaning, reduce its self-purification capacity, water quality is caused to continue to bad future development, so natural water desilting is the most feasible method for improving natural water water quality, but due to the thickness of end mud, the vertical distribution of pollutant concentration is different or cause great difficulty to the dredging of mud, thus makes river regulation difficult.The method being usually used in natural water desilting at present has: Physical, chemical method.
Physical mainly comprises Sediment Dredging and diversion erosion and deposition, these two kinds of methods are transfer or dilution pollutent just, can pollute in watershed downstream, cure the symptoms, not the disease, can only as the reply emergency schedule of sudden water pollution or the supplementary means as town river Pollution abatement.
Chemical method mainly increases the settling property of non-dissolved contaminants in river by adding chemical agent, and by dewatering type, removes mud, but due to natural water water capacity large, this kind of method cost is very huge.And easily there is equipment failure in the long-time heavy-duty service of dehydration equipment, causes treatment cycle to increase.
Municipal systems mainly comprises urban wastewater treatment firm water collecting basin and other water treatment buildings, and townm refuse landfill yard water collecting basin.Contain a certain amount of insoluble pollutent in municipal wastewater and percolate, usual technique adopts grating tank remove this part pollutent, but processing power affects by grid gap length, the pollutent that particle diameter is less can gather at water collecting basin through grid, in addition because water treatment building has certain hydraulic detention time, especially refuse landfill water collecting basin (residence time is generally more than 3 months), long stop, microorganism amount reproduction in sewage, along with the metabolism of microorganism, generate a large amount of biological sludges, this part mud short-term can not impact process structures, but long-play can cause the effective water capacity of water collecting basin to reduce, affect equalizing tank Regulation capacity, simultaneously, containing a large amount of pollution substance in the mud gathered, stir along with water inlet, influent load can be caused to fluctuate change, affect wastewater treatment efficiency, in addition, along with urban development, most early stage municipal sewage plant built, for meeting due to explosive population growth, the requirement that water displacement increases, need carry out expansion reconstruction, need to clear up existing pond body in reconstruction process, be collected in a large number each process structures bottom mud be difficult to very reluctant.
Traditional method generally adopts takes out mud filter-pressing method, but running cost is high; For refuse landfill water collecting basin, because landfill yard water collecting basin hydraulic detention time is long, pond body floor space is large, and is coated with the anti seepage membrane of cracky at the bottom of pond, and it is high to take out mud pressure filtering technique difficulty, and equipment cost, total investment of engineering is huge.
Summary of the invention
For the shortcoming and defect of traditional desilting technique, the object of the invention is to develop the reliable and stable desilting bag of a kind of less energy-consumption, low input, desilting and adopt the mud dredging method of this desilting bag.
For achieving the above object, technical scheme proposed by the invention is: a kind of mud desilting bag, comprises bag, be located at the water-in on bag, venting port, it is characterized in that: described bag is made up by laser seamless welding technique of geotechnological ecological film; The preparation method of described geotechnological ecological film is:
Step 1: adopt organic fibre to be woven into substrate;
Step 2: even application is added with the high density polyethylene(HDPE) of uvioresistant additive in substrate, coating thickness is 0.4mm, 100-105 degree Celsius of lower film forming after spraying is good;
Step 3: after film forming success, when geotechnological ecological film surface temperature is down to 83-87 degree Celsius, by mechanical mechanism punch pattern, geotechnological ecological film impacts the aperture of some amount on request, small aperture controls at 0.2-0.4mm;
Step 4: geotechnological ecological film is put into cooler and be cooled to rapidly subzero 5 degrees Celsius; Due to principle of expanding with heat and contracting with cold, the surface layer aperture contacted with freezing air preferentially shrinks, and the aperture contraction speed under surface layer is comparatively slow, forms little lower wide wedged hole;
Preferably, the substrate in step 1 adopts PP material, and the trade mark is that Z30S-CF spinning has good resistance to compression, erosion-resisting characteristics physical strength advantages of higher.
Preferably, select wave band at the laser of 800nm-1100nm in described laser seamless welding.
Preferably, the water-in of described desilting bag and exhaust ports thicken with 2 layers or 3 layers of geotechnological ecological film strengthens process.
Preferably, the adding proportion of described uvioresistant additive is the UV-531 anti-uv-ray adding high density polyethylene(HDPE) quality 0.8%.
The present invention also comprises a kind of mud dredging method adopting above-mentioned desilting bag to carry out mud desilting, it is characterized in that, will be pumped out by slush pump containing water slurry, after adding coagulating agent, pump into desilting bag, at volatilization and gravity or under adding stressed effect, realize the mummification of mud.
Further, also comprise by the desilting bag being full of mud is stacked, conducted oneself with dignity by soil engineering bag, the moisture extruding in the soil engineering bag of bottom is extruded, completes dehydration.
Adopt technique scheme, mud desilting bag of the present invention is adopted to carry out mud desilting, before dehydration, water-containing sludge water ratio is generally more than 98%, after this law dehydration, moisture percentage in sewage sludge can be reduced to about 70%, one week be exposed to the sun and natural air drying, moisture percentage in sewage sludge can be reduced to about 50% further, reach the processing power of common sludge drying equipment, and the inventive method have the advantages such as low, saving running cost that consume energy.
Accompanying drawing explanation
Fig. 1 is imperforated geotechnological ecological film structural representation of the present invention;
Fig. 2 is geotechnological ecological film sectional view of the present invention;
Fig. 3 is mud desilting bag structural representation of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
As Figure 1-3, mud desilting bag of the present invention, comprises bag 20, is located at the water-in 201 on bag 20, venting port 202, and described bag 20 is made up by laser seamless welding technique of geotechnological ecological film 10.And preferred, select wave band at the laser of 800nm-1100nm in described laser seamless welding, the water-in of the desilting bag simultaneously and exhaust ports thicken with 2 layers or 3 layers of geotechnological ecological film strengthens process.
In addition, the preparation method of described geotechnological ecological film 10 is:
Step 1: adopt organic fibre to be woven into substrate 101;
Step 2: even application is added with the high density polyethylene(HDPE) 102 of uvioresistant additive on the substrate 10, coating thickness is 0.4mm, after spraying is good under 100-105 film forming;
Step 3: after film forming success, when geotechnological ecological film surface temperature is down to 83-87 degree Celsius, by mechanical mechanism punch pattern, geotechnological ecological film impacts the aperture of some amount on request, small aperture controls at 0.2-0.4mm;
Step 4: geotechnological ecological film is put into cooler and be cooled to rapidly subzero 5 degrees Celsius; Due to principle of expanding with heat and contracting with cold, the surface layer aperture contacted with freezing air preferentially shrinks, and the aperture contraction speed under surface layer is comparatively slow, forms little lower wide wedged hole 103.
Preferably, the adding proportion of described uvioresistant additive is for adding 0.8% UV-531 strongthener anti-uv-ray.
Wherein preferred, the substrate in step 1 adopts PP material, and the trade mark is that Z30S-CF spinning has good resistance to compression, erosion-resisting characteristics physical strength advantages of higher.
The present invention also comprises a kind of mud dredging method adopting above-mentioned desilting bag to carry out mud desilting, it is characterized in that, will be pumped out by slush pump containing water slurry, after adding coagulating agent, pump into desilting bag, at volatilization and gravity or under adding stressed effect, realize the mummification of mud.
Further, also comprise by the desilting bag being full of mud is stacked, conducted oneself with dignity by soil engineering bag, the moisture extruding in the soil engineering bag of bottom is extruded, completes dehydration.
Mud desilting bag of the present invention is adopted to carry out mud desilting, before dehydration, water-containing sludge water ratio is generally more than 98%, after this law dehydration, moisture percentage in sewage sludge can be reduced to about 70%, one week be exposed to the sun and natural air drying, moisture percentage in sewage sludge can be reduced to about 50% further, reaches the processing power of common sludge drying equipment, and the inventive method has the advantages such as low, saving running cost that consume energy.
The geotechnological ecology bag simultaneously completing dehydration has many application methodes, below introduces the application method of several maturation; One, can as riverbank ecological revetment, ecology bag has good slump performance, in the stacking process of ecology bag, very easily forms one-piece construction by gravity and earth pressure at rest, effectively enhance the erosion resistibility of bank protection, meanwhile, ecology bag can plant vegetation, build good landscape effect, containing the necessary nutritive substance of plant-growth in curing sludge in ecology bag, effectively reduce maintenance cost; Its two, can as blinding layer, this method is particularly useful for city life garbage burying field, and the mud of fixed line can increase refuse landfill bearing capacity of foundation soil, avoids because of percolate that to infiltrate the soil property caused soft, and landfill yard such as to subside at the disadvantageous effect.
Although specifically show in conjunction with preferred embodiment and describe the present invention; but those skilled in the art should be understood that; not departing from the spirit and scope of the present invention that appended claims limits; in the form and details the present invention is made a variety of changes, be protection scope of the present invention.
Claims (8)
1. a mud desilting bag, comprises bag, is located at the water-in on bag, venting port, it is characterized in that: described bag is made up by laser seamless welding technique of geotechnological ecological film; The preparation method of described geotechnological ecological film is:
Step 1: adopt modification organic fibre to be woven into substrate; Substrate adopts PP material, the trade mark be Z30S-CF spinning as base material, there is good resistance to compression, erosion-resisting characteristics; Physical strength is high;
Step 2: even application is added with the high density polyethylene(HDPE) of uvioresistant additive in substrate, coating thickness is 0.4mm, after spraying is good under 100-105 film forming;
Step 3: after film forming success, when geotechnological ecological film surface temperature is down to 83-87 degree Celsius, by mechanical mechanism punch pattern, geotechnological ecological film impacts the aperture of some amount on request, small aperture controls at 0.2-0.4mm;
Step 4: geotechnological ecological film is put into cooler and be cooled to rapidly subzero 5 degrees Celsius; Due to principle of expanding with heat and contracting with cold, the surface layer aperture contacted with freezing air preferentially shrinks, and the aperture contraction speed under surface layer is comparatively slow, forms little lower wide wedged hole.
2. a kind of mud desilting bag according to claim 1, is characterized in that: described substrate adopts PP material, and the trade mark is Z30S-CF spinning.
3. a kind of mud desilting bag according to claim 1, is characterized in that: select wave band at the laser of 800nm-1100nm in described laser seamless welding.
4. a kind of mud desilting bag according to claim 1, is characterized in that: the water-in of described desilting bag and exhaust ports thicken with 2 layers or 3 layers of geotechnological ecological film strengthens process.
5. a kind of mud desilting bag according to claim 1, is characterized in that: described uvioresistant additive model is UV-531.
6. a kind of mud desilting bag according to claim 5, is characterized in that: described uvioresistant additive add-on is 0.8% of high density polyethylene(HDPE) quality.
7. a mud dredging method, it is characterized in that, the mud desilting bag described in the arbitrary claim of claim 1-5 is adopted to carry out mud desilting, concrete steps are: will be pumped out by slush pump containing water slurry, desilting bag is pumped into after adding coagulating agent, at volatilization and gravity or under adding stressed effect, realize the mummification of mud.
8. a kind of mud dredging method according to claim 6, is characterized in that, also comprising by being stacked by the desilting bag being full of mud, being conducted oneself with dignity by soil engineering bag, the moisture extruding in the soil engineering bag of bottom is extruded, completes dehydration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510544726.6A CN105000787B (en) | 2015-08-31 | 2015-08-31 | A kind of mud desilting bag and mud dredging method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510544726.6A CN105000787B (en) | 2015-08-31 | 2015-08-31 | A kind of mud desilting bag and mud dredging method |
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| Publication Number | Publication Date |
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| CN105000787A true CN105000787A (en) | 2015-10-28 |
| CN105000787B CN105000787B (en) | 2017-03-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415969A (en) * | 2021-06-29 | 2021-09-21 | 国网江苏省电力有限公司建设分公司 | Integrated treatment and filler utilization method for waste mud or slag in power grid construction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230298A (en) * | 1997-02-20 | 1998-09-02 | K I T:Kk | Treatment of sludge |
| JP2009214088A (en) * | 2008-03-13 | 2009-09-24 | Metawater Co Ltd | Sewage sludge treatment system |
| CN101774745A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Sludge storing pipe bag for dehydration and dehydration method |
| CN102454113A (en) * | 2010-10-29 | 2012-05-16 | 孔繁金 | Geotextile composite film and production process thereof |
-
2015
- 2015-08-31 CN CN201510544726.6A patent/CN105000787B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230298A (en) * | 1997-02-20 | 1998-09-02 | K I T:Kk | Treatment of sludge |
| JP2009214088A (en) * | 2008-03-13 | 2009-09-24 | Metawater Co Ltd | Sewage sludge treatment system |
| CN101774745A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Sludge storing pipe bag for dehydration and dehydration method |
| CN102454113A (en) * | 2010-10-29 | 2012-05-16 | 孔繁金 | Geotextile composite film and production process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415969A (en) * | 2021-06-29 | 2021-09-21 | 国网江苏省电力有限公司建设分公司 | Integrated treatment and filler utilization method for waste mud or slag in power grid construction |
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| Publication number | Publication date |
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| CN105000787B (en) | 2017-03-29 |
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Address after: 361000 Building 5E, Hauli Building, 151 Yuehua Road, Huli District, Xiamen City, Fujian Province Patentee after: Xiamen Zhanzhan Industrial Co., Ltd. Address before: 361000 Building 5E, Hauli Building, 151 Yuehua Road, Huli District, Xiamen City, Fujian Province Patentee before: Xiamen Zhongzhan Renewable Resources Technology Co., Ltd. |
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Granted publication date: 20170329 Termination date: 20200831 |