CN102295371A - Integrated-processing process for river bottom-mud dredging residual water and equipment thereof - Google Patents
Integrated-processing process for river bottom-mud dredging residual water and equipment thereof Download PDFInfo
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- CN102295371A CN102295371A CN2011102419853A CN201110241985A CN102295371A CN 102295371 A CN102295371 A CN 102295371A CN 2011102419853 A CN2011102419853 A CN 2011102419853A CN 201110241985 A CN201110241985 A CN 201110241985A CN 102295371 A CN102295371 A CN 102295371A
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Abstract
The invention belongs to the fields of environmental protection, water-processing technologies and equipment and concretely relates to an integrated-processing process for river bottom-mud dredging residual water and equipment thereof. The integrated-processing process comprises the following steps of: pumping the bottom-mud dredging residual water into a settling pool through a water pump for carrying out primary settling separation, enabling the upper-layer residual water to continuously flow to a stirring device through a lifting pump, sufficiently mixing a flocculating agent, a coagulant aid and the residual water to form a flocculent body, enabling the mixed residual water to further flow into a centrifugal device, sufficiently separating the flocculent body and the residual water through rapid centrifugation, and discharging the separated residual water. The integrated-processing process for the river bottom-mud dredging residual water provided by the invention comprises a dredging residual-water inlet pump, the settling pool, a mud-discharging pump, a medicine-adding device, the stirring device, the centrifugal device, a water-outlet pump and pipelines; and the whole set of device has a simple process, and not only are the optimum adding amount and the adding proportion of the flocculating agent and the coagulant aid searched, but also the device has a high integration degree, is rapid to move, is simple to operate and is suitable for the water-processing equipment for rapidly processing the residual water on large silt-removing sites.
Description
Technical field
The invention belongs to environment protection, water technology and apparatus field, be specifically related to surplus water integrated treatment process of a kind of river dredging bed mud and equipment thereof.
Background technology
Environmental dredging is the important means of administering the heavily contaminated water body, by the dredging to polluted bed mud, can remove the endogenous pollution thing of heavily contaminated water body.Traditional dredging engineering is because its dredging mud mainly is an inorganic particle, and density is bigger, selects for use the natural subsidence method just can realize mud-water separation efficiently.But enter water body along with the pollution substance of large amount of organic is discharged in recent years, the organic soil content of thin clay in the dredging mud is constantly increased, this just is difficult to realize sedimentation under field conditions (factors).And the mud bed mud is broken in the dredging process, has strengthened the release of pollutent, makes Yu Shuizhong contain a large amount of pollution substances that are rich in bed mud, these material major parts attached on the fine particle, be suspended in Yu Shuizhong, be difficult to sedimentation.The surplus water treatment of chemical flocculation is the more surplus water technology of present domestic and international application.Chemical floc has the function of compression double electric layer and adsorption bridging, and the formation flocculation that can flock together in the surplus water is taken off, and takes off surely, realizes that surplus water purifies purpose.
But dredging bed mud surplus water is a kind of complexity, stable dispersion system, has certain treatment effect though single flocculation agent uses separately, and it is handled the surplus water of dredging and still is difficult to the effect that reaches satisfied.Many experts and scholars are by studying flocculation agent and the compound use of other coagulant aids to improve the treatment effect to pollutent.Wherein organic polymer coagulant aids polyacrylamide (PAM) is the flocculation agent that organic polymer is most widely used aspect water treatment.Zhang Shifang proves that after deliberation PAM utilizes the effect of its absorption and bridge formation in water treatment, and turbidity, colourity are all had good removal ability.The enhanced coagulation mechanism of action is similar to conventional coagulation mechanism, comprises that mainly compression double electric layer effect, absorption charge neutrality effect, absorption-bridging action, precipitation net catch effect etc.Enhanced coagulation can be realized by improving coagulating agent consumption, change coagulating agent kind, adjustment water temperature, adjusting and practical high-molecular coagulant adopting.
The correlation processing technique of dredging bed mud occurs.Huo Shouliang etc. have studied the short heavy method of dosing and have handled environmental dredging stockyard Yu Shui, and this technology can be removed most of tiny suspended particle in the surplus water, and effluent quality also can reach emission request.Ceng Defang etc. are main raw material with shrimp and crab shells and rectorite leng, have prepared a kind of sludge dewatering flocculation agent of novel environment friendly, and this flocculation agent has not only improved the dehydration rate of mud, and has shortened the time of sludge settling.The present invention is different with respect to the compounded combination of above technology flocculation agent and coagulant aids, ton mud lower-cost flocculation agent of unit consumption flocculation agent and coagulant dosage ratio have been obtained, and at traditional slow-paced shortcoming of coagulation natural subsidence, adopted quick centrifugation technique can make flco in a short period of time with surplus water sepn, finally improve surplus water water quality.
Summary of the invention
In order to solve the deficiencies in the prior art, the object of the present invention is to provide a kind of bed mud in river to dredge surplus water one treatment process and equipment thereof, promptly use enhanced flocculation and quick centrifugation process integration, the surplus water of dredging bed mud is disposed and is handled problems in the solution environmental dredging process.
The bed mud in river that the present invention proposes is dredged surplus water one treatment process, and concrete steps are as follows: the surplus water of dredging bed mud is extracted in the settling bowl through lift pump, carries out preliminary settlement separately, and larger particles and the particle that more easily forms flco sink gradually, get rid of through sludge pump; Upper strata Yu Shui continues to flow to whipping appts through the lifting pump, adds flocculation agent and coagulant aids in the whipping appts, and under the effect of whipping appts, flocculation agent, coagulant aids and Yu Shui thorough mixing form flco, and Yu Shui hydraulic detention time in whipping appts is 2-3 minute; Mixed surplus water further flow in the centrifugal device, and through centrifugal fast, flco fully separates with Yu Shui, the remained water discharge after the separation; Controlling the specified treatment capacity of surplus water is 300t/ days, and the intake pump flooding velocity is 0.15-0.25m
3/ min, the whipping appts stir speed (S.S.) is 250r/min-350r/min.
Among the present invention, described flocculation agent adopts iron(ic) chloride, and the add-on of iron(ic) chloride is 10～20mg/L.
Among the present invention, described coagulant aids adopts polyacrylamide (PAM), and the add-on of PAM is 1.2～2.4 mg/L.
Among the present invention, the accumulation for the mud that guarantees settling bowl has mud discharging mouth in its bottom, and sludge pump is discharged the mud of settling bowl accumulation as requested.
The quick integrated equipment for wastewater treatment of the surplus water of dredging bed mud that the present invention proposes, by dredging surplus water intake pump 1, settling bowl 2, sludge pump 3, chemicals dosing plant 5, whipping appts 6, centrifugal device 7, go out water pump 8 and each pipeline is formed, dredging surplus water intake pump 1 links to each other with settling bowl 2 one sides top water-in by pipeline, settling bowl 2 opposite sides top water outlet links to each other with the water inlet of whipping appts 6 one sides top by lifting pump 4 and pipeline, settling bowl 2 bottoms are provided with mud discharging mouth, and described mud discharging mouth is connected with sludge pump 3 by pipeline; Whipping appts 6 tops are provided with chemicals dosing plant 5, whipping appts 6 one sides top water outlet is by pipe connection centrifugal device 7 one sides top water-in, centrifugal device 7 opposite sides top water outlet goes out water pump 8 by pipe connection, and centrifugal device 7 one side-lower mud discharging mouths are connected with sludge pump 9 by pipeline.
Among the present invention, described centrifugal device 7 adopts the principle of work of centrifuge dehydration mummification method, is made up of water-in, rotating cylinder, outer casing, screw feeder, water port, mud discharging mouth and bed frame assembly.
Among the present invention, chemicals dosing plant 5 is provided with peristaltic pump with the pipeline that whipping appts 6 is connected, and advances the medicine flow velocity in order to what regulate chemicals dosing plant 5.
Among the present invention, be provided with 1 under meter before the lifting pump 4, be used to measure the flow that enters whipping appts 6 so that the dosing peristaltic pump is regulated the dosing flow.
Among the present invention, whipping appts 6 and centrifugal device 7 are positioned at carrier loader 10 tops.
Among the present invention, described settling bowl 2 is the toroidal structure.
Among the present invention, described whipping appts 6 tops are column, and the bottom is sphere.
Among the present invention, described carrier loader 10 is truck or other carrier vehicle.
Beneficial effect of the present invention is:
1. add the enhanced flocculation step in the bed mud dredging is handled, add the flocculation agent iron trichloride, can kill the bacterium in the water effectively, and can remove the colloidalmaterial in anhydrating, particulate matter also can be alleviated the pollution that underwater gold belongs to material and radioactive substance.
2. adopt the coagulant double crossing technology, in flocculation process, add polyacrylamide (PAM), not only can make the colloidal particle of suspension take off steady flocculation, but also can react by not electronegative solute, produce insoluble salt, remove by flocculation sediment.
3. enter quick centrifugal device again through the water after the coagulation pretreatment, can reduce the requirement of coagulation pretreatment on the one hand to coagulant charging quantity, on the other hand, the quick centrifugal time that shortens coagulation flco natural subsidence greatly, and catch by absorption-bridging action, precipitation net that effect etc. can make in the natural process can't settled pollution substance sedimentation, improved effluent quality greatly.
4. adopt truck whole technology can be operated integratively.
In a word, complete assembly technology is simple, not only search out the optimum dosage of flocculation agent and coagulant aids and added ratio, and install integrated degree height, move fastly, operate simple and easyly, when moving, also needn't unload, handle a scene and can be transported to another scene fast, increased usage ratio of equipment.Be to be adapted at large-scale desilting site carries out fast processing to surplus water water treating equipment.
Description of drawings
Fig. 1 dredges surplus water integrated treatment facility structural diagrams for this bed mud in river.
Number in the figure: 1 is the surplus water intake pump of dredging bed mud, and 2 is settling bowl, and 3 are sedimentation bed mud sludge pump, 4 are the lifting pump, and 5 is chemicals dosing plant, and 6 is whipping appts, 7 is centrifugal device, 8 for going out water pump, and 9 are flocculation bed mud sludge pump, and 10 is carrier loader, a is the surplus water water inlet of dredging bed mud, b is the settling bowl spoil disposal, and c is water outlet, and d is the centrifugal device spoil disposal.
Embodiment
Further specify the present invention in conjunction with the accompanying drawings below by embodiment.
Embodiment 1: concrete grammar is to dredge the surplus water of bed mud through settling bowl, and the settling time can be provided with according to on-the-spot settling bowl volume elasticity.Water outlet enters whipping appts 6, flocculation agent iron(ic) chloride adds with peristaltic pump with 1.2～2.4 mg/L with 10～20mg/L, coagulant aids PAM and enters in the whipping appts 6 simultaneously, agitators in the whipping appts 6 stir and make surplus water thorough mixing after flocculation agent, coagulant aids and the sedimentation, and Yu Shui is controlled between 2min～3min at the hydraulic detention time of whipping appts 6.Whipping appts 6 water outlets enter centrifugal device 7, through the centrifugation of centrifugal device 7, and the bacterium in the water, organism, neutral molecule, finely ground particle substance guarantee that with the form centrifugal settling of coagulation flco effluent quality reaches emission standard.
Turbidity in the water inlet, COD
CrBe respectively 134～258NTU, during 40～69mg/L, surplus water water quality is respectively after the art breading: turbidity is minimum reduces to below 7～15NTU, and COD can reduce in 10～15mg/L, removes most effectively can reach 95.2% and 92% respectively.Effluent quality can reach " urban sewage reutilization landscape water water quality standard " requirement (GB/T18921-2002).
Among Fig. 1, realize that bed mud dredges the device that surplus water integrated coagulation reinforcements-centrifugation treatment process adopted and be: intake pump 1, settling bowl 2, sludge pump 3, lifting pump 4, chemicals dosing plant 5, whipping appts 6, centrifugal device 7, go out water pump 8 and each connecting pipeline composition.Settling bowl 2 is positioned at the rear portion of carrier loader 10, is " hydraucone " shape structure; Chemicals dosing plant 5 is a square container, be positioned at whipping appts 6 directly over; Whipping appts 6 tops are column, high 1.5m, and the bottom is sphere, and wherein spherical radius is 0.5m; Centrifugal device 7 is close to whipping apptss 6, is positioned at the forefront of carrier loader 10.Water inlet a enters settling bowl 2 through intake pump 1, settling bowl sedimentation bed mud is got rid of by sludge pump 3, Yu Shui enters whipping appts 6, flocculation agent is added by dosing pump from dosing tank 5 by flocculation agent and enters whipping appts 6 simultaneously, stir 20～30min, water outlet is removed coagulating flco and particulate matter through centrifugal separating device 7, and enrichment sedimentation flco is discharged by sludge pump 9, and water outlet is finally produced water by going out water pump 8.
Accompanying drawing 1 is that integrated coagulation stirs centrifugal device, application carrier is truck or other carrier vehicle, the coagulation whipping appts not only is connected with pipeline with centrifugal device, and all be fixed on the privileged site of carrier loader, in actual process, avoid the dismounting and the carrying work of device, increased the maneuvering ability of device.
Claims (10)
1. a bed mud in river is dredged surplus water one treatment process, it is characterized in that concrete steps are as follows: the surplus water of dredging bed mud is extracted in the settling bowl through lift pump, carry out preliminary settlement separately, larger particles and the particle that more easily forms flco sink gradually, get rid of through sludge pump; Upper strata Yu Shui continues to flow to whipping appts through the lifting pump, adds flocculation agent and coagulant aids in the whipping appts, and under the effect of whipping appts, flocculation agent, coagulant aids and Yu Shui thorough mixing form flco, and Yu Shui hydraulic detention time in whipping appts is 2-3 minute; Mixed surplus water further flow in the centrifugal device, and through centrifugal fast, flco fully separates with Yu Shui, the remained water discharge after the separation; Controlling the specified treatment capacity of surplus water is 300t/ days, and the intake pump flooding velocity is 0.15-0.25m
3/ min, the whipping appts stir speed (S.S.) is 250r/min-350r/min.
2. bed mud in river according to claim 1 is dredged surplus water one treatment process, it is characterized in that described flocculation agent adopts iron(ic) chloride, and the add-on of iron(ic) chloride is 10～20mg/L.
3. bed mud in river according to claim 1 is dredged surplus water one treatment process, it is characterized in that described coagulant aids adopts polyacrylamide, and the add-on of polyacrylamide is 1.2～2.4 mg/L.
4. the treatment facility of the quick integrated processing technique of the surplus water of dredging bed mud as claimed in claim 1, by dredging surplus water intake pump (1), settling bowl (2), sludge pump (3), chemicals dosing plant (5), whipping appts (6), centrifugal device (7), going out water pump (8) and each pipeline forms, it is characterized in that dredging surplus water intake pump (1) links to each other with settling bowl (2) one sides top water-in by pipeline, settling bowl (2) opposite side top water outlet links to each other with the water inlet of whipping appts (6) one sides top by lifting pump (4) and pipeline, settling bowl (2) bottom is provided with mud discharging mouth, and described mud discharging mouth is connected with sludge pump (3) by pipeline; Whipping appts (6) top is provided with chemicals dosing plant (5), whipping appts (6) one sides top water outlet is by pipe connection centrifugal device (7) one sides top water-in, centrifugal device (7) opposite side top water outlet goes out water pump (8) by pipe connection, and centrifugal device (7) one side-lower mud discharging mouths are connected with sludge pump (9) by pipeline.
5. treatment facility according to claim 4 is characterized in that chemicals dosing plant (5) is provided with peristaltic pump with the pipeline that whipping appts (6) is connected.
6. treatment facility according to claim 4 is characterized in that lifting pump (4) is preceding to be provided with 1 under meter.
7. treatment facility according to claim 4 is characterized in that whipping appts (6) and centrifugal device (7) are positioned at carrier loader (10) top.
8. treatment facility according to claim 4 is characterized in that described settling bowl (2) is the toroidal structure.
9. treatment facility according to claim 4 is characterized in that described whipping appts (6) top is column, and the bottom is sphere.
10. treatment facility according to claim 7 is characterized in that described carrier loader (10) is truck or other carrier vehicle.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718300A (en) * | 2012-07-11 | 2012-10-10 | 中交天津港航勘察设计研究院有限公司 | Method and device for environment-friendly dredging remained water metering coagulation treatment |
| CN104030536A (en) * | 2014-06-04 | 2014-09-10 | 安徽省交通航务工程有限公司 | Environment-friendly dredged sediment integrated mechanical deep-drying system |
| CN104671376A (en) * | 2015-01-30 | 2015-06-03 | 长沙理工大学 | Process for treating high-concentration pectin wastewater |
| CN106219859A (en) * | 2016-08-16 | 2016-12-14 | 中电建水环境治理技术有限公司 | Lake, river is gushed polluted bed mud and is processed remaining water multistage purification processing system |
| CN106277702A (en) * | 2016-08-31 | 2017-01-04 | 北京燕山威立雅水务有限责任公司 | A kind of method for sludge treatment |
| CN106277701A (en) * | 2016-08-31 | 2017-01-04 | 北京燕山威立雅水务有限责任公司 | A kind of packaged type sludge treating system |
| CN106882877A (en) * | 2017-02-24 | 2017-06-23 | 深圳十方清新生态环保科技有限公司 | A kind of method that drift is discharged in muddy water environment and row's silt purifier |
| CN107162274A (en) * | 2017-07-05 | 2017-09-15 | 河南北斗众创高新技术研究院有限公司 | A kind of sewage solid separation and cleaning system |
| CN107473433A (en) * | 2017-10-25 | 2017-12-15 | 陈琪雯 | A kind of circular treatment formula sewage-treatment plant |
| CN107698117A (en) * | 2017-11-22 | 2018-02-16 | 深圳市瑞沃工程有限公司 | A kind of bed mud comprehensive treatment ship waterborne and its processing method |
| CN109095574A (en) * | 2018-08-20 | 2018-12-28 | 环境保护部华南环境科学研究所 | A kind of processing method and its device of unexpected environmental accident emergency synchronous denitrification dephosphorizing |
| CN109179931A (en) * | 2018-10-22 | 2019-01-11 | 江苏澳洋生态园林股份有限公司 | A kind of solar energy energy supply type remedying sludge floating bed system |
| CN110386689A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Pretreatment system for bed mud residual water treatment equipment |
| CN110467310A (en) * | 2019-07-09 | 2019-11-19 | 中电建水环境治理技术有限公司 | Pipeline shunt control method and device |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102718300A (en) * | 2012-07-11 | 2012-10-10 | 中交天津港航勘察设计研究院有限公司 | Method and device for environment-friendly dredging remained water metering coagulation treatment |
| CN104030536A (en) * | 2014-06-04 | 2014-09-10 | 安徽省交通航务工程有限公司 | Environment-friendly dredged sediment integrated mechanical deep-drying system |
| CN104671376A (en) * | 2015-01-30 | 2015-06-03 | 长沙理工大学 | Process for treating high-concentration pectin wastewater |
| CN106219859B (en) * | 2016-08-16 | 2018-03-16 | 中电建水环境治理技术有限公司 | Gush water multistage purification processing system more than polluted bed mud processing in river lake |
| CN106219859A (en) * | 2016-08-16 | 2016-12-14 | 中电建水环境治理技术有限公司 | Lake, river is gushed polluted bed mud and is processed remaining water multistage purification processing system |
| CN106277702A (en) * | 2016-08-31 | 2017-01-04 | 北京燕山威立雅水务有限责任公司 | A kind of method for sludge treatment |
| CN106277701A (en) * | 2016-08-31 | 2017-01-04 | 北京燕山威立雅水务有限责任公司 | A kind of packaged type sludge treating system |
| CN106882877A (en) * | 2017-02-24 | 2017-06-23 | 深圳十方清新生态环保科技有限公司 | A kind of method that drift is discharged in muddy water environment and row's silt purifier |
| CN107162274A (en) * | 2017-07-05 | 2017-09-15 | 河南北斗众创高新技术研究院有限公司 | A kind of sewage solid separation and cleaning system |
| CN107473433A (en) * | 2017-10-25 | 2017-12-15 | 陈琪雯 | A kind of circular treatment formula sewage-treatment plant |
| CN107698117A (en) * | 2017-11-22 | 2018-02-16 | 深圳市瑞沃工程有限公司 | A kind of bed mud comprehensive treatment ship waterborne and its processing method |
| CN109095574A (en) * | 2018-08-20 | 2018-12-28 | 环境保护部华南环境科学研究所 | A kind of processing method and its device of unexpected environmental accident emergency synchronous denitrification dephosphorizing |
| CN109179931A (en) * | 2018-10-22 | 2019-01-11 | 江苏澳洋生态园林股份有限公司 | A kind of solar energy energy supply type remedying sludge floating bed system |
| CN110386689A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Pretreatment system for bed mud residual water treatment equipment |
| CN110467310A (en) * | 2019-07-09 | 2019-11-19 | 中电建水环境治理技术有限公司 | Pipeline shunt control method and device |
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Application publication date: 20111228 |