CN103539331A - Pipeline blast sludge drying method for sludge storage yards - Google Patents
Pipeline blast sludge drying method for sludge storage yards Download PDFInfo
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- CN103539331A CN103539331A CN201210251026.4A CN201210251026A CN103539331A CN 103539331 A CN103539331 A CN 103539331A CN 201210251026 A CN201210251026 A CN 201210251026A CN 103539331 A CN103539331 A CN 103539331A
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Abstract
The invention provides a novel sludge drying method. The design is used for medium and large sludge storage yards, and a novel solution is proposed for solving the drying problem of a great deal of sludge in the sludge storage yards. A pipeline is designed into the accumulated sludge and passes through the accumulated sludge, therefore, on one hand, the contact area between the inside of the sludge and the air is enlarged, on the other hand, the pipeline is blasted through an external blast blower, the air is brought into the sludge through the pipeline, and meanwhile, the pipeline is heated under the action of blasting. The heat conduction inside the sludge is enhanced, the contact area between the inside of the sludge and the air is enlarged, the moisture in the sludge can be rapidly evaporated, and the speed for drying the sludge in the storage yards is increased.
Description
One, technical field
The invention belongs to field of environment engineering technology, be specifically related to the method for design of silt stockyard pipeline air blast mud mummification method and illustrate.
Two, background technology
Along with the enhancing gradually with people's environmental consciousness that improves constantly of standard of living, people pay special attention to periphery living environment and living space quality.In the face of the various environment that go from bad to worse, improvement and the cry of administering are more and more higher.Wherein the protection of water body environment and pollution treatment are especially aobvious outstanding.The various water body environments in city and peripheral region thereof (comprising reservoir, lake, river course, irrigation canals and ditches etc.) are because difficulty of governance is large, do not administer and make a large amount of siltings in the bottom for many years, have a strong impact on water body environment, make water quality blackening smelly, the problem of disturbing residents happens occasionally.
Since the nineties in 20th century, domestic some city starts to pay close attention to this problem, take variety of way urban water-body to be carried out to the West Lake, the Dian Chi in Kunming, the Aug. 1st lake in the XuanWu Lake in Nanjing, Nanchang, the South Lake in Changchun in Liu Hai, Hangzhou, dredging governance ，Ru Pekinese etc.
Water body desilting is that the mud in river course, lake etc. is cut, collects, extracts, is delivered to the whole process that environmental protection treatment is carried out in specific area concentration from the bottom.In municipal sludge, domestic refuse, building waste are piled into mountain, and lakebed is contained a large amount of biogas, poison gas, foul smell even with harmful pollutants such as heavy metals.How the mud that how to carry out environment-protective desilting, clears out is processed is the problem that current international community is all being inquired into.If it is bad that certain link is processed, desilting engineering will be brought serious, large-area secondary pollution, and consequence is hardly imaginable.
In desilting process, mud is carried with the concentration lower than 40% conventionally, therefore, how promptly to make mud particulate deposits, solidify, the rapid dehydration that realizes mud is to reduce large quantity of moisture spent idle work and high cost when carrying, reflux, processing, reduce to greatest extent secondary pollution simultaneously, and strive realizing its recycling, are all the key links in environment-protective desilting engineering.
Developed country pays much attention to the processed of urban water-body desilting and mud, and the comprehensive utilization to mud after dewatering, and has carried out research extensively and profoundly, and has formed industry.At present, the mud in Hong Kong all carries out landfill, and European Sludge landfill Zhan42%， U.S. Sludge landfill accounts for 35%, and Canadian Sludge landfill accounts for 30%, and Japanese Sludge landfill accounts for 24%.According to EPA, estimate, from now on the more than ten years, 6500 landfill yards of the U.S. will have 5000 to close.Mud is back to the developing direction that farmland is Ying, Mei,Fa Deng state sludge disposal, and the agricultural rate of municipal sludge is more than 70%, have up to more than 80%.External sludge dewatering method roughly has following several:
(1) solidification treatment in.This method is to help on the basis of feed technique in aerating, with air compressor, adds solidify material (agglutinant) aerating force feed.The agglutinant that mud in dredging tube is added into progressively solidifies, and reaches the object of dehydration.By the strength of expanded air, before being blown slowly, the mud in pipe is transferred to spoil disposal field;
(2) classification press dewatering.The mud that desilting equipment clears out carries out sub-sieve by silt separation apparatus, and isolated sandstone can effectively utilize, and in isolated muddy water, adds solidifying agent, then carries out high-pressure compressing dehydration;
(3) portable continuously dehydrating.Mud dehydration plant is placed on vehicle or boats and ships to equipment tool mobility.Mud enters coagulation sedimentation groove continuously, adds harmless agglutinant in coagulation sedimentation groove, then carries out vacuum hydro-extraction and carry out transporting in time after sterilizing thermal treatment, and water reaches emission request;
(4) high press-dehydrating.This method is continous way dehydration, and processing power is strong, wide accommodation.Its flow process is: in mud, add polymer coagulant, be introduced into and in tablets press, carry out primary dewatering (low pressure), then carry out second dehydration (high pressure).
But these dewaterings need to expend mass energy, at present, domestic desilting mainly takes to pile the mode of mud field or landfill yard to the treatment process of bed mud, and specific practice is:
(1) lay end filter material layer: on barged-in fill surface, lay one deck 300g/m2 non-woven fabrics and one deck bamboo chip basketry, then manually push flyash filtrate;
(2) network of drains construction: sewerage pipeline network is formed the vertical filtering layer pump well that plum blossom point is arranged is set in the vertical direction by pump well (brickwork construction), multi-stage pipeline, plastic drain-pipe and pump (submersible pump);
(3) natural-dehydration: the mud that is deposited in mud field dewaters through natural air drying, and water filtration flows into pump well by water shoot, pump (submersible pump) is by water suction water treating pond;
(4) water conditioning, discharge: the water in water treating pond is carried out to water conditioning, make it reach emission standard and discharge again backwater storehouse, lake, river course, irrigation canals and ditches etc. after up to standard.
Therefore we have designed pipeline air blast mud mummification method for the mud that is deposited in mud field, this is because sludge volume is huge during due to natural-dehydration, drainage is poor, the time that discharging consolidation needs under self gravitation effect is very long, if do not dealt carefully with, can take for a long time a large amount of soils and have environmental pollution hidden danger.
Three, summary of the invention
The problem that the present invention need to solve is:
Invent a kind of pipeline air-blasting method that can be applied to the quickening mud mummification of mud stack up yard.This silt stockyard pipeline air blast mud mummification method can large-area applications in mud stack up yard, and solidify for accelerating mud mummification the good effect of playing.
Technical scheme of the present invention:
Silt stockyard pipeline air blast mud mummification method of the present invention, this is designed for big-and-middle-sized silt stockyard, for the mummification problem of a large amount of mud of silt stockyard, proposes new solution.Piling up the mud indoor design pipeline of getting up, pipeline is through (being shown in Figure of description) in the mud of piling up, increase on the one hand the contact area of mud inside and air, on the other hand by outside gas blower to pipeline air blast, by pipeline, take wind to mud inside, pipeline is due to blasting action heating simultaneously.The thermal conduction of mud inside is strengthened, and increases with air contact area, and the moisture in mud is able to rapid evaporation, accelerates the mud mummification speed of stack up yard.
The pipeline of mud inside is selected corrosion-resistant synthetic materials tubing, and this is because channel cleanout mud is rich in ammonia nitrogen waste water and organic matter, and corrosion-resistant synthetic materials tubing resistance to corrosion is strong, can resist the corrosion of ammonia nitrogen waste water.On the other hand, corrosion-resistant synthetic materials tubing is easy to connect, inexpensive and quality is hard.
Conduit arrangements adopts alternating expression, gas blower is facing to horizontal pipeline, horizontal pipeline is selected the extra heavy pipe of D100, as main shaft pipeline, at main shaft pipeline this fulcrum pipeline longitudinally that is staggered, every 4m arranges one, and pipe tunnel is selected the tubule of D50, and the length of longitudinal axis pipeline is determined according to the mud width of piling up.Length standard is that the end of longitudinal axis pipeline is still inner at mud, and isolated edge 50cm at least.
Effect of the present invention is:
Obtain a kind of novel mud drying method.The material of main part of this invention is selected not only cheap durable but also have higher-strength, can bear and treat that dry mud is pressed in the weight on pipeline.The arrangement mode of pipeline adopts alternating expression, the use of not only having saved tubing, and the contact area of increasing air and mud inside, can also make due to staggered arrangement the weight capacity of tubing strengthen.Therefore this invention can be solidified engineering for the mud mummification of big-and-middle-sized silt stockyard provides a kind of new system of selection, can promote mud mummification Study on curing progress.
Four, accompanying drawing explanation
Fig. 1: silt stockyard pipeline air blast mud mummification method.Accompanying drawing is the mud drawing in side sectional elevation that lays pipeline, by diagram conduit arrangements, adopt alternating expression, gas blower is facing to horizontal pipeline, horizontal pipeline is selected the extra heavy pipe of D100, as main shaft pipeline, at main shaft pipeline this fulcrum pipeline longitudinally that is staggered, every 4m arranges one, pipe tunnel is selected the tubule of D50, and the length of longitudinal axis pipeline is determined according to the mud width of piling up.Length standard is that the end of longitudinal axis pipeline is still inner at mud, and isolated edge 50cm at least.
five, embodiment
Pipe laying on the mud that is 1m at thickness, by diagram conduit arrangements, adopt alternating expression, gas blower is facing to horizontal pipeline, horizontal pipeline is selected the extra heavy pipe of D100, as main shaft pipeline, at main shaft pipeline this fulcrum pipeline longitudinally that is staggered, every 4m arranges one, pipe tunnel is selected the tubule of D50, and the length of longitudinal axis pipeline is determined according to the mud width of piling up.Length standard is that the end of longitudinal axis pipeline is still inner at mud, and isolated edge 50cm at least.After pipeline laying, can above pipeline, continue the mud that ulking thickness is 1m, after all laying, gas blower is placed in opening one end at each transverse tube, every day, every day, blasting time was 3-6 hour, according to the mummification situation of mud, determined regularly to the inner air blast of mud.
Claims (2)
1. a novel mud drying method.This is designed for big-and-middle-sized silt stockyard, for the mummification problem of a large amount of mud of silt stockyard, proposes new solution.Piling up the mud indoor design pipeline of getting up, pipeline, in the mud of piling up, increases the inner contact area with air of mud on the one hand, on the other hand by outside gas blower to pipeline air blast, by pipeline, take wind to mud inside, pipeline is due to blasting action heating simultaneously.The thermal conduction of mud inside is strengthened, and increases with air contact area, and the moisture in mud is able to rapid evaporation, accelerates the mud mummification speed of stack up yard.
2. the pipeline of mud inside is selected corrosion-resistant synthetic materials tubing, and this is because channel cleanout mud is rich in ammonia nitrogen waste water and organic matter, and corrosion-resistant synthetic materials tubing resistance to corrosion is strong, can resist the corrosion of ammonia nitrogen waste water.On the other hand, corrosion-resistant synthetic materials tubing is easy to connect, inexpensive and quality is hard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251026.4A CN103539331A (en) | 2012-07-16 | 2012-07-16 | Pipeline blast sludge drying method for sludge storage yards |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210251026.4A CN103539331A (en) | 2012-07-16 | 2012-07-16 | Pipeline blast sludge drying method for sludge storage yards |
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| CN103539331A true CN103539331A (en) | 2014-01-29 |
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| CN201210251026.4A Pending CN103539331A (en) | 2012-07-16 | 2012-07-16 | Pipeline blast sludge drying method for sludge storage yards |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194333A (en) * | 2020-10-22 | 2021-01-08 | 中国建筑第八工程局有限公司 | Sludge dewatering treatment system and dewatering method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447087A (en) * | 2002-03-25 | 2003-10-08 | 金基台 | Cyclone hot air drier |
-
2012
- 2012-07-16 CN CN201210251026.4A patent/CN103539331A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1447087A (en) * | 2002-03-25 | 2003-10-08 | 金基台 | Cyclone hot air drier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112194333A (en) * | 2020-10-22 | 2021-01-08 | 中国建筑第八工程局有限公司 | Sludge dewatering treatment system and dewatering method thereof |
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Application publication date: 20140129 |