CN103159391A - Sludge dewatering solidification treatment method - Google Patents
Sludge dewatering solidification treatment method Download PDFInfo
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- CN103159391A CN103159391A CN2011104062200A CN201110406220A CN103159391A CN 103159391 A CN103159391 A CN 103159391A CN 2011104062200 A CN2011104062200 A CN 2011104062200A CN 201110406220 A CN201110406220 A CN 201110406220A CN 103159391 A CN103159391 A CN 103159391A
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Abstract
The present invention relates to a sludge treatment technology, and discloses a sludge dewatering solidification treatment method, which comprises the following steps: (1) separating sand and stone; (2) carrying out primary solid-liquid separation; (3) adding a solidification agent; (4) carrying out press filtration; and (5) draining. The sludge dewatering solidification treatment method has advantages of high efficiency, low energy consumption and easy operation and management, wherein the obtained sludge consolidation body has a certain structure and bearing capacity, and can be used as a highway base course filler, greening base soil, a building material and the like so as to achieve a harmless resource treatment of the sludge. In addition, with the treatment technology, sewage produced at the middle stage is subjected to a harmless treatment so as to achieve water resource recycling.
Description
Technical field
The present invention relates to a kind of sludge treatment technology, especially relate to a kind of efficient, less energy-consumption, be easy to the sludge dewatering solidification processing method of the desilting mud of operational management.
Background technology
The mud that produces in dredging engineering often adopts the stacking mode or is transported to the off-lying sea and does and abandon processing, and such processing mode or take a large amount of land resourcess perhaps has a strong impact on effective utilization of oceanic resources.Mostly contain in addition the pollutents such as heavy metal, organic matter in mud, this just will inevitably cause to soil and ocean environment the severe contamination of destruction.
At present, the discarded restraining factors that become China's river management and oceanographic engineering development of dredging silt, dredging silt has caused the attention of personages of various circles of society and relevant departments on the impact of environment.Therefore, the development of sludge treatment technology has very important meaning for environment protection.
As far back as late 1980s, Britain, France, Sweden, Holland and the developed country quite a lot such as Australian have just carried out comprehensive development and utilization in the commercialization mode to mud.Britain, France have begun to utilize mud to be main raw material, make high-efficient purification fuel, and its calorific value exceeds 30% than common coal, and can not give off obnoxious flavour in combustion processes; Germany has developed the factory that mud was collected, processed in many families specially, and a year treatment capacity reaches more than 300,000 tons; Japan has begun to produce all kinds of material of construction with mud.The fragment of brick of making take mud as main raw material has good permeability, lightweight, and color is the advantage such as modulation easily, has become the best-selling goods of world market.Yet in China, due to technical elements, mud there is no reasonable outlet.The mode of utilizing for mud only limits to agriculturally as fertilizer.
The sludge solidification treatment technology that adopts both at home and abroad at present is physics dewatering and coagulating and high-temperature digestion sintering.Adopt the physics method for airing need take the big area place, and be subject to weather effect, processing efficiency is low, is difficult to satisfy the requirement of large-scale dredging engineering; Employing high-temperature digestion sintering method disposal mud expense is high, treatment capacity is limited.
Summary of the invention
In the lake dredging up process of sea, current river, mud exists and is untreated or the drawback such as processing efficiency is low, the purpose of this invention is to provide a kind of efficient, less energy-consumption, has been easy to the sludge dewatering solidification processing method of the desilting mud of operational management.
The present invention realizes by following technical measures, and a kind of sludge dewatering solidification processing method comprises following steps:
(1), sandstone separates: the mud in the Jiang Hai lake is extracted out through pipeline, separated, sandstone discharged after washing through sand-gravel separation device, rest part enters settling tank;
(2), solid-liquid initial gross separation: add flocculation agent in settling tank, the weight ratio of mud and flocculation agent is 5: 0.01, and the mixed solution of gained is slightly made the standing effect that just reaches preliminary solid-liquid separation;
(3), add solidifying agent: add solidifying agent in the mud of step (2) gained, the weight ratio of mud and solidifying agent is 10: 1, stirs after dosing, and mud and solidifying agent are mixed;
(4), press filtration: mud press filtration 20min under 0.6MPa pressure of step (3) gained realizes further mud-water separation, obtains the silt consolidation body of water ratio＜30%;
(5) draining: the water that produces in step (2) and step (4), is discharged after processing to water treatment system through pipe influx.
As a kind of optimal way, the sand-gravel separation device in described step (1) adopts high strength manganese steel roller separation screen cloth and drum-type to clean, and sandstone is separated and wash afterwards and discharge.
As a kind of optimal way, the flocculation agent in described step (2) comprises main solidifying agent: polymerize aluminum chloride, compound coagulant aids: compound diatomite, sorbent material: phosphoric acid salt and conditioning agent: sulfuric acid lime.Add in proportion according to amount of sludge in practical application, dosing is through stirring postprecipitation 10min.
Concrete, the weight ratio of described solidifying agent each component is cement 10～30, flyash 30～60, lime 20～30, kaolin 3～5 and promoting agent 0.5～1.
The invention belongs to the chemosetting method, adopt this method that mud is disposed, processing efficiency is high, easy construction, and is easy to apply, and adopts the present invention to process gained silt consolidation body water content＜30%, can be used as the road base layer filler, and is respond well.The core of the technology of the present invention is to solidify to take off dry systems, the present invention integrates the functions such as sandstone separation, flocculation sediment, chemosetting and filter-press dehydration, and make two moisture in treatment step from, converge, recycle after simple process, this technology has reached resource utilization and the water circuit recycling of mud simultaneously.
Mud after processing through the present invention, not only processing efficiency is high, and reduced investment, and running cost is low, can reach the engineering application level; Isolated water is as clear as crystal when water treatment system is discharged, and the SS value is less than 20mg/l.
Description of drawings
Fig. 1 is the process flow sheet of the embodiment of the present invention 1.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention is described in further detail.
A kind of sludge dewatering solidification processing method comprises following steps:
(1), sandstone separates: the mud in the Jiang Hai lake is extracted out through pipeline, through high strength manganese steel roller separation screen cloth separate and drum-type clean after with the sandstone discharge, rest part enters settling tank;
(2), solid-liquid initial gross separation: add flocculation agent in settling tank, the weight ratio of mud and flocculation agent is 5: 0.01, flocculation agent comprises main solidifying agent: polymerize aluminum chloride, compound coagulant aids: compound diatomite, sorbent material: phosphoric acid salt and conditioning agent: sulfuric acid lime, dosing is through stirring postprecipitation 10min, and the mixed solution of gained is slightly made the standing effect that just reaches preliminary solid-liquid separation;
(3), add solidifying agent: add solidifying agent in the mud of step (2) gained, the weight ratio of mud and solidifying agent is 10: 1, the weight ratio of solidifying agent each component is cement 10～30, flyash 30～60, lime 20～30, kaolin 3～5 and promoting agent 0.5～1, stir after dosing, mud and solidifying agent are mixed;
(4), press filtration: mud press filtration 20min under 0.6MPa pressure of step (3) gained realizes further mud-water separation, obtains the silt consolidation body of water ratio＜30%; The silt consolidation body is the mud cake of water content 22-28%, has a fixed structure and intensity, meets water and is difficult for argillization, can do road base layer filler, greening base soil, building materials filler etc.;
(5) draining: to water treatment system, isolated water is as clear as crystal when water treatment system is discharged through pipe influx for the water that produces in step (2) and step (4), and the SS value is less than 20mg/l.
Embodiment 1:
Jiamusi Tang Wanghe 1000m3 riverway sludge has been carried out solidification treatment and fill test, after testing, processed gained silt consolidation body water content＜22%, the curing property of soil can satisfy to fill as dyke uses native requirement; When isolated water is discharged through water treatment system, the SS value is less than 20mg/l.
Embodiment 2:
Jiamusi apricot woods river silt mud 1000m3 riverway sludge is carried out solidification treatment and highway is filled up test, after testing, processed gained silt consolidation body water content＜28%, as the road base layer filler, respond well; When isolated water is discharged through water treatment system, the SS value is less than 20mg/l.
It is more than the elaboration to a kind of sludge dewatering solidification processing method of the present invention; be used for helping to understand the present invention; but embodiments of the present invention are not restricted to the described embodiments; anyly do not deviate from the change done under the principle of the invention, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (4)
1. sludge dewatering solidification processing method is characterized in that comprising following steps:
(1), sandstone separates: the mud in the Jiang Hai lake is extracted out through pipeline, separated, sandstone discharged after washing through sand-gravel separation device, rest part enters settling tank;
(2), solid-liquid initial gross separation: add flocculation agent in settling tank, the weight ratio of mud and flocculation agent is 5: 0.01, and the mixed solution of gained is slightly made the standing effect that just reaches preliminary solid-liquid separation;
(3), add solidifying agent: add solidifying agent in the mud of step (2) gained, the weight ratio of mud and solidifying agent is 10: 1, stirs after dosing, and mud and solidifying agent are mixed;
(4), press filtration: mud press filtration 20min under 0.6MPa pressure of step (3) gained realizes further mud-water separation, obtains the silt consolidation body of water ratio＜30%;
(5) draining: the water that produces in step (2) and step (4), is discharged after processing to water treatment system through pipe influx.
2. sludge dewatering solidification processing method according to claim 1 is characterized in that: the sand-gravel separation device in described step (1) adopts high strength manganese steel roller separation screen cloth and drum-type to clean, and sandstone is separated and wash discharge afterwards.
3. sludge dewatering solidification processing method according to claim 1 is characterized in that: the flocculation agent in described step (2) comprises main solidifying agent: polymerize aluminum chloride, compound coagulant aids: compound diatomite, sorbent material: phosphoric acid salt and conditioning agent: sulfuric acid lime.
4. sludge dewatering solidification processing method according to claim 1, it is characterized in that: the weight ratio of described solidifying agent each component is cement 10～30, flyash 30～60, lime 20～30, kaolin 3～5 and promoting agent 0.5～1.
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| CN2011104062200A CN103159391A (en) | 2011-12-08 | 2011-12-08 | Sludge dewatering solidification treatment method |
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| CN103601352A (en) * | 2013-11-27 | 2014-02-26 | 福建省源顺环保工程有限公司 | Environment-friendly sludge treatment system |
| CN103894390A (en) * | 2013-10-12 | 2014-07-02 | 南京科盛环保科技有限公司 | Process for governing and repairing polluted sediments of water area |
| CN103977883A (en) * | 2014-04-28 | 2014-08-13 | 武汉钢铁(集团)公司 | Dry pile method suitable for rainy humid area tailings |
| CN105174883A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Water-retention and waste-curing curing agent |
| CN105645707A (en) * | 2016-03-04 | 2016-06-08 | 温州大学 | Slurry-water solidification and separation tank |
| CN105731743A (en) * | 2016-03-07 | 2016-07-06 | 武汉市政工程设计研究院有限责任公司 | Comprehensive treatment system for urban lake pollution sludge |
| CN106348552A (en) * | 2016-08-31 | 2017-01-25 | 赵卫平 | Industrial sludge solid waste treatment method |
| CN106542278A (en) * | 2015-09-18 | 2017-03-29 | 山东浩海疏浚装备有限公司 | A kind of integral type dehydrating and curing waggon |
| CN106587565A (en) * | 2017-01-25 | 2017-04-26 | 上海中耀环保实业有限公司 | Continuous dewatering and curing integrated process for mud and silt |
| CN106938914A (en) * | 2017-03-17 | 2017-07-11 | 江苏中宜生态土研究院有限公司 | A kind of sludge and silt sintering brick preparation method |
| CN106977071A (en) * | 2017-05-18 | 2017-07-25 | 贵州美瑞特环保科技有限公司 | A kind of new mercurous and heavy metal sewage sludge dehydration minimizing device |
| CN107234126A (en) * | 2017-07-19 | 2017-10-10 | 苏林锋 | Architecture sediment nuisanceless disposal and the method for regeneration |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN108191181A (en) * | 2018-01-12 | 2018-06-22 | 广州市水电建设工程有限公司 | A kind of urban river sediment cleanser and its production method |
| CN108314280A (en) * | 2018-01-12 | 2018-07-24 | 广州市水电建设工程有限公司 | A kind of sludge curing agent and preparation method thereof |
| CN110028222A (en) * | 2019-04-02 | 2019-07-19 | 叶文勇 | A kind of construction slurry solidification processing method |
| CN110124386A (en) * | 2019-05-24 | 2019-08-16 | 中山弗雷德机械有限公司 | A kind of Sand separating and concentrating-dewatesystem system for building mortar |
| CN110839509A (en) * | 2019-11-12 | 2020-02-28 | 江苏澳洋生态园林股份有限公司 | Method for treating river and lake sludge and then using water-land interlaced belt plant planting matrix |
| CN111058416A (en) * | 2018-10-16 | 2020-04-24 | 成秉功 | Reservoir repair system |
| CN111377679A (en) * | 2020-02-10 | 2020-07-07 | 中水投(广东)建设有限公司 | Construction method of corrosion-resistant blow-off pipe |
| CN112030639A (en) * | 2020-08-17 | 2020-12-04 | 钱红梁 | Method for obtaining hydraulic roadbed filler by filter pressing and curing of slurry or tailings |
| CN112679175A (en) * | 2020-12-29 | 2021-04-20 | 苏州吴中供水有限公司 | Lime comprehensive stabilized soil |
| CN113666588A (en) * | 2021-07-26 | 2021-11-19 | 江苏省科佳工程设计有限公司 | Method for curing high-water-content slurry |
| CN115180886A (en) * | 2022-07-11 | 2022-10-14 | 长沙学院 | Recycling method of municipal sludge |
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| CN103601352A (en) * | 2013-11-27 | 2014-02-26 | 福建省源顺环保工程有限公司 | Environment-friendly sludge treatment system |
| CN103977883A (en) * | 2014-04-28 | 2014-08-13 | 武汉钢铁(集团)公司 | Dry pile method suitable for rainy humid area tailings |
| CN105174883A (en) * | 2015-06-29 | 2015-12-23 | 马鞍山金晟工业设计有限公司 | Water-retention and waste-curing curing agent |
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| CN105645707A (en) * | 2016-03-04 | 2016-06-08 | 温州大学 | Slurry-water solidification and separation tank |
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| CN106348552A (en) * | 2016-08-31 | 2017-01-25 | 赵卫平 | Industrial sludge solid waste treatment method |
| CN106587565A (en) * | 2017-01-25 | 2017-04-26 | 上海中耀环保实业有限公司 | Continuous dewatering and curing integrated process for mud and silt |
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| CN108191181B (en) * | 2018-01-12 | 2018-12-14 | 广州市水电建设工程有限公司 | A kind of urban river sediment cleanser and its production method |
| CN108191181A (en) * | 2018-01-12 | 2018-06-22 | 广州市水电建设工程有限公司 | A kind of urban river sediment cleanser and its production method |
| CN111058416A (en) * | 2018-10-16 | 2020-04-24 | 成秉功 | Reservoir repair system |
| CN110028222A (en) * | 2019-04-02 | 2019-07-19 | 叶文勇 | A kind of construction slurry solidification processing method |
| CN110124386A (en) * | 2019-05-24 | 2019-08-16 | 中山弗雷德机械有限公司 | A kind of Sand separating and concentrating-dewatesystem system for building mortar |
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| CN111377679A (en) * | 2020-02-10 | 2020-07-07 | 中水投(广东)建设有限公司 | Construction method of corrosion-resistant blow-off pipe |
| CN112030639A (en) * | 2020-08-17 | 2020-12-04 | 钱红梁 | Method for obtaining hydraulic roadbed filler by filter pressing and curing of slurry or tailings |
| CN112679175A (en) * | 2020-12-29 | 2021-04-20 | 苏州吴中供水有限公司 | Lime comprehensive stabilized soil |
| CN113666588A (en) * | 2021-07-26 | 2021-11-19 | 江苏省科佳工程设计有限公司 | Method for curing high-water-content slurry |
| CN115180886A (en) * | 2022-07-11 | 2022-10-14 | 长沙学院 | Recycling method of municipal sludge |
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Application publication date: 20130619 |