CN113072285A - Sludge concentration and dehydration integrated treatment process - Google Patents
Sludge concentration and dehydration integrated treatment process Download PDFInfo
- Publication number
- CN113072285A CN113072285A CN202110433199.7A CN202110433199A CN113072285A CN 113072285 A CN113072285 A CN 113072285A CN 202110433199 A CN202110433199 A CN 202110433199A CN 113072285 A CN113072285 A CN 113072285A
- Authority
- CN
- China
- Prior art keywords
- concentration
- sludge
- treatment process
- dehydration
- flocculation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000018044 dehydration Effects 0.000 title claims abstract description 28
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000005189 flocculation Methods 0.000 claims description 43
- 230000016615 flocculation Effects 0.000 claims description 43
- 239000002245 particle Substances 0.000 claims description 32
- 208000005156 Dehydration Diseases 0.000 claims description 26
- 230000005484 gravity Effects 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 12
- 239000008394 flocculating agent Substances 0.000 claims description 11
- 238000000926 separation method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003864 humus Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
- E02B3/023—Removing sediments
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Ocean & Marine Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge concentration and dehydration integrated treatment process, belonging to the field of sludge treatment processes; the river and lake sludge dredging engineering comprises: the sludge is dredged, transported, concentrated, dehydrated, transported and disposed, and the slurry pumped by a cutter suction dredger is transported to the shore by a pipeline and is treated by the treatment process. The process of the invention comprises a sand-water separator, a garbage separator, a sludge concentration tank, a sludge dewatering machine, a dosing machine, a conditioning concentration tank, dry sludge conveying equipment and the like. The suction dredger presses the sucked sludge into a sludge dewatering system of the system through a pipeline, and the separated garbage and sludge are transported to a garbage landfill site by a municipal sanitation truck for treatment. The water separated in the sludge dewatering process is recycled or discharged after being treated to reach the discharge standard.
Description
Technical Field
The invention belongs to the field of sludge treatment processes, and particularly relates to a sludge concentration and dehydration integrated treatment process.
Background
A typical sludge treatment process flow includes four treatment or disposal stages. The first stage is sludge concentration, and mainly aims to primarily reduce the volume of sludge and reduce the volume of a subsequent treatment structure or equipment capacity; the second stage is sludge digestion to decompose the organic matters in the sludge; the third stage is sludge dewatering to further reduce the volume of the sludge; the fourth stage is sludge disposal, and the final sludge is consumed in a certain way. The clear liquid or filtrate produced in the above stages still contains a large amount of pollutants, and thus should be returned to the sewage treatment system for treatment. Therefore, the development of an integrated treatment process for sludge concentration and dehydration is urgently needed.
Disclosure of Invention
Technical problem to be solved
(1) The clear liquid or filtrate generated in each stage still contains a large amount of pollutants, so the clear liquid or the filtrate needs to be sent back to a sewage treatment system for treatment.
(2) The concentration and dehydration efficiency is improved.
(II) technical scheme
The invention is realized by the following technical scheme:
a sludge concentration and dehydration integrated treatment process comprises the following steps:
step 100: underwater cutter suction dredging of a cutter suction dredger;
step 200: pretreating by a sand-water separator;
step 300: pretreating the garbage by a garbage separator;
step 400: carrying out concentration platform treatment;
step 500: carrying out dehydration platform treatment;
step 600: transporting the mud cakes outwards;
in the concentration treatment of the step 400, a first flocculation tank is arranged on a concentration platform, and a flocculating agent is added in the concentration process; the dewatering platform in step 500 is provided with a second flocculation tank.
Further, in the concentration treatment in the step 400, the sludge pretreated in the steps 100 to 300 flows to a flocculation tank of a concentration platform through a pipeline by gravity, a flocculating agent is added, and flocculation particles with the diameter of 1-3 mm are formed under the action of a flocculating agent compression double electric layer and an adsorption bridge.
Further, the effluent of the first flocculation tank is filtered by filter cloth during concentration treatment in the step 400, so that the separation of flocculated particles from water is realized.
Further, after the concentration in the step 400, the concentrated sludge is conveyed to a dewatering platform through a sludge pump, and in the process of passing through the sludge pump, larger flocculation particles can be broken into smaller flocculation particles, so that part of water combined in the flocculation particles is released.
Further, when the step 400 is transported after concentration, the generated smaller flocculated particles are flocculated into larger flocculated particles again in the secondary flocculation tank of the dewatering platform of the step 500.
Further, the sludge and the larger flocculation particles in the step 500 pass through a filter cloth gravity concentration section, a middle filter cloth gravity concentration section, a pre-pressing section, a middle-pressure section, a high-pressure section and the like on the dehydrator to realize sludge-water separation.
Further, the first flocculation tank in the step 400 is connected with an automatic chemical adding agent; and the second flocculation tank of the step 500 is connected with an automatic dosing machine.
Furthermore, the treatment process is also provided with a sedimentation tank; the sedimentation tank is respectively connected with the garbage separator, the concentration platform and the dehydration platform.
Further, tail water overflowing from the garbage separator in the step 300 flows into a sedimentation tank; the concentration stage of step 400 and the dehydration stage of step 500 produce backwash water that flows into the settling tank.
And further, draining the percolating water of the sedimentation tank into a sewer or a river channel.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a process flow diagram of the present invention;
Detailed Description
Referring to fig. 1, an integrated process for sludge concentration and dehydration includes the following steps:
step 100: underwater cutter suction dredging of a cutter suction dredger;
step 200: pretreating by a sand-water separator;
step 300: pretreating the garbage by a garbage separator;
step 400: carrying out concentration platform treatment;
step 500: carrying out dehydration platform treatment;
step 600: transporting the mud cakes outwards;
in the concentration treatment of the step 400, a first flocculation tank is arranged on a concentration platform, and a flocculating agent is added in the concentration process; the dewatering platform in step 500 is provided with a second flocculation tank.
And in the step 400, during concentration treatment, the sludge pretreated in the steps 100 to 300 flows to a flocculation tank of a concentration platform through a pipeline by gravity, a flocculating agent is added, and flocculation particles with the diameter of 1-3 mm are formed under the action of a flocculating agent compression double electric layer and an adsorption bridge.
Wherein, the effluent of the first flocculation tank is filtered by filter cloth during the concentration treatment in the step 400, so as to realize the separation of flocculated particles and water.
After the concentration in the step 400, the concentrated sludge is conveyed to a dewatering platform through a sludge pump, and in the process of passing through the sludge pump, larger flocculation particles can be crushed into smaller flocculation particles, so that part of water combined in the flocculation particles is released.
Wherein, when the step 400 is transported after concentration, the generated smaller flocculated particles are flocculated into larger flocculated particles again in the secondary flocculation tank of the step 500 dewatering platform.
And (2) the sludge and the larger flocculation particles in the step (500) pass through a filter cloth gravity concentration section, a middle filter cloth gravity concentration section, a pre-pressing section, a middle-pressure section, a high-pressure section and the like on the dehydrator to realize sludge-water separation.
Wherein, the first flocculation tank in the step 400 is connected with an automatic chemical adding agent; and the second flocculation tank of the step 500 is connected with an automatic dosing machine.
Wherein the treatment process is also provided with a sedimentation tank; the sedimentation tank is respectively connected with the garbage separator, the concentration platform and the dehydration platform.
Wherein, the tail water overflowing from the garbage separator in the step 300 flows into a sedimentation tank; the concentration stage of step 400 and the dehydration stage of step 500 produce backwash water that flows into the settling tank.
Wherein, the percolating water of the sedimentation tank is discharged into a sewer or a river channel.
The working principle is as follows:
firstly, carrying out underwater cutter suction dredging by a cutter suction dredger, wherein the sludge on the cutter suction dredger comprises humus, organic sludge, sand and a small amount of clay, and the water content is about 95%. In order to reduce the adverse effect of sand and garbage on the subsequent treatment, the sludge sucked up by the cutter is treated. The treatment equipment comprises a sand-water separator and a garbage separator. All substances with the grain diameter larger than 0.5mm in water, including clay, humus, sandstone and the like, can be removed through pretreatment, wherein the removal rate of sand reaches more than 95%.
The treated sludge mainly comprises organic sludge, a small amount of fine sand and a small amount of clay, flows to a flocculation tank of a concentration platform through a pipeline by gravity, is added with a flocculating agent, and forms flocculation particles with the diameter of 1-3 mm under the action of a flocculating agent compression double electric layer and an adsorption bridge. The effluent of the flocculation tank is filtered by filter cloth to realize the separation of flocculation particles and water. Through the concentration platform, the water content of the sludge can be reduced to 80-90%, and the volume of the sludge is 1/2-1/3 of the cutter suction ship cutter suction sludge.
The concentrated sludge is conveyed to a dewatering platform through a sludge pump, and in the process of passing through the sludge pump, larger flocculation particles can be crushed into smaller particles, so that part of water combined in the flocculation particles is released.
In the secondary flocculation tank of the dewatering platform, the broken small particles are flocculated into larger particles again. The sludge and water are separated by a filter cloth gravity concentration section, a middle filter cloth gravity concentration section, a pre-pressing section, a middle pressure section, a high pressure section and the like on the dehydrator, the water content of the sludge is gradually reduced to about 60 percent, and finally the sludge is changed into a sludge cake which is transported outside after being solidified.
Tail water generated in the sludge concentration and dehydration process is clear in percolating water under the action of gravity, reaches the comprehensive sewage discharge standard above grade III, sometimes even reaches the standard above grade II, can be used for backwashing water of a machine, can be discharged into a city sewer and the like; the tail water generated by the medium-pressure section and the strong-pressure section has partial leaked flocculating particles, and the former water quality condition can be achieved through simple filtration.
The control mode of the invention is controlled by manually starting and closing the switch, the wiring diagram of the power element and the supply of the power source belong to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the wiring arrangement are not explained in detail in the invention.
The control mode of the invention is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the supply of the power supply also belongs to the common knowledge in the field, and the invention is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the invention.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A sludge concentration and dehydration integrated treatment process comprises the following steps:
step 100: underwater cutter suction dredging of a cutter suction dredger;
step 200: pretreating by a sand-water separator;
step 300: pretreating the garbage by a garbage separator;
step 400: carrying out concentration platform treatment;
step 500: carrying out dehydration platform treatment;
step 600: transporting the mud cakes outwards;
the method is characterized in that: in the concentration treatment of the step 400, a first flocculation tank is arranged on a concentration platform, and a flocculating agent is added in the concentration process; the dewatering platform in step 500 is provided with a second flocculation tank.
2. The integrated sludge concentration and dehydration treatment process according to claim 1, characterized in that: and 400, during concentration treatment, allowing the sludge pretreated in the steps 100-300 to flow to a flocculation tank of a concentration platform through a pipeline by gravity, adding a flocculating agent, and forming flocculation particles with the diameter of 1-3 mm under the action of a flocculating agent compression double electric layer and an adsorption bridge.
3. The integrated sludge concentration and dehydration treatment process according to claim 1 or 2, characterized in that: and in the step 400, the effluent of the first flocculation tank is filtered by filter cloth during concentration treatment, so that the separation of flocculated particles and water is realized.
4. The integrated sludge concentration and dehydration treatment process according to claim 1, characterized in that: after the concentration in the step 400, the concentrated sludge is conveyed to a dewatering platform through a sludge pump, and in the process of passing through the sludge pump, larger flocculation particles can be crushed into smaller flocculation particles, so that part of water combined in the flocculation particles is released.
5. The integrated sludge concentration and dehydration treatment process according to claim 1 or 4, characterized in that: during transportation after the concentration in the step 400, the generated smaller flocculated particles are flocculated into larger flocculated particles again in the secondary flocculation tank of the dewatering platform in the step 500.
6. The integrated sludge concentration and dehydration treatment process according to claim 5, characterized in that: and (5) the sludge and the larger flocculation particles in the step 500 pass through a filter cloth gravity concentration section, a middle filter cloth gravity concentration section, a pre-pressing section, a middle pressure section, a high pressure section and the like on the dehydrator to realize sludge-water separation.
7. The integrated sludge concentration and dehydration treatment process according to claim 1, characterized in that: the first flocculation tank in the step 400 is connected with an automatic chemical adding agent; and the second flocculation tank of the step 500 is connected with an automatic dosing machine.
8. The integrated sludge concentration and dehydration treatment process according to claim 1, characterized in that: the treatment process is also provided with a sedimentation tank; the sedimentation tank is respectively connected with the garbage separator, the concentration platform and the dehydration platform.
9. The integrated sludge concentration and dehydration treatment process according to claim 1 or 8, characterized in that: tail water overflowing from the garbage separator in the step 300 flows into a sedimentation tank; the concentration stage of step 400 and the dehydration stage of step 500 produce backwash water that flows into the settling tank.
10. The integrated sludge concentration and dehydration treatment process according to claim 1 or 8, characterized in that: and draining the percolating water of the sedimentation tank into a sewer or a river channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433199.7A CN113072285A (en) | 2021-04-22 | 2021-04-22 | Sludge concentration and dehydration integrated treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110433199.7A CN113072285A (en) | 2021-04-22 | 2021-04-22 | Sludge concentration and dehydration integrated treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113072285A true CN113072285A (en) | 2021-07-06 |
Family
ID=76618564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110433199.7A Pending CN113072285A (en) | 2021-04-22 | 2021-04-22 | Sludge concentration and dehydration integrated treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113072285A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585611A (en) * | 2004-12-30 | 2009-11-25 | 北京相武科技有限公司 | Industrial wastewater and municipal wastewater treatment method |
| CN103570213A (en) * | 2012-08-06 | 2014-02-12 | 佛山科创玮景环保技术有限公司 | Sludge treatment method |
| CN104829073A (en) * | 2015-04-14 | 2015-08-12 | 东莞市智汇水务科技有限公司 | Sludge treatment method and sludge treatment system |
| JP2017113671A (en) * | 2015-12-22 | 2017-06-29 | 水ｉｎｇ株式会社 | Method for treating water purification sludge and water purification sludge treatment device |
| CN110590092A (en) * | 2019-10-18 | 2019-12-20 | 上海同臣环保有限公司 | River and lake sludge dewatering and solidifying integrated treatment process |
-
2021
- 2021-04-22 CN CN202110433199.7A patent/CN113072285A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585611A (en) * | 2004-12-30 | 2009-11-25 | 北京相武科技有限公司 | Industrial wastewater and municipal wastewater treatment method |
| CN103570213A (en) * | 2012-08-06 | 2014-02-12 | 佛山科创玮景环保技术有限公司 | Sludge treatment method |
| CN104829073A (en) * | 2015-04-14 | 2015-08-12 | 东莞市智汇水务科技有限公司 | Sludge treatment method and sludge treatment system |
| JP2017113671A (en) * | 2015-12-22 | 2017-06-29 | 水ｉｎｇ株式会社 | Method for treating water purification sludge and water purification sludge treatment device |
| CN110590092A (en) * | 2019-10-18 | 2019-12-20 | 上海同臣环保有限公司 | River and lake sludge dewatering and solidifying integrated treatment process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110590092B (en) | River and lake sludge dewatering and solidifying integrated treatment process | |
| CN107842330B (en) | Bentonite-carried-rock slurry purification treatment method and system | |
| CN101863608B (en) | Solid-liquid separation process for drilled pile waste mud | |
| CN106045257B (en) | Bed mud combined treatment process | |
| US5575921A (en) | Sludge dredging and dewatering process | |
| CN110294573A (en) | It is a kind of to utilize UASB anaerobic reactor, MBR, ultrafiltration and reverse osmosis treatment landfill leachate system | |
| CN101186400A (en) | Harmless treatment method for discarded slurry | |
| CN105174637A (en) | Pretreatment process for papermaking tail water recycling and zero discharge | |
| KR101342551B1 (en) | The Equipment of Reduction Sludge Dewatering Water Content Rate to Total Solids Improvement in Unity Sludge Tank and Belt Press Filter on the Upper and Lower Percolate using High Pressure Cleaning Water Supply | |
| CN102329021B (en) | High-eutrophication water advanced purification treatment method and device | |
| CN106977073B (en) | Ecological dredging integrated system | |
| CN112028341A (en) | Grit material production wastewater treatment system and wastewater treatment method | |
| CN102489073A (en) | Construction method for rapidly dehydrating dredging mud by centrifugation and plate frame | |
| CN113072285A (en) | Sludge concentration and dehydration integrated treatment process | |
| CN116239286A (en) | Reservoir dredging sediment ecological treatment system and process | |
| JP4688332B2 (en) | Low concentration slurry dewatering equipment | |
| CN105152491B (en) | Pulping tail water recycling and zero emission preprocessing process | |
| KR100920454B1 (en) | Sewage disposal plant sewage disposal method | |
| CN106746225A (en) | A kind of device and method for reclaiming waste water produced in potato starch manufacturing | |
| KR102008124B1 (en) | Dredged soil sorting system for the utilization of reclamation soil | |
| KR20010107843A (en) | A sludge treatment system | |
| KR100849219B1 (en) | equipment and method for treatment waste water | |
| CN206308234U (en) | A kind of device for reclaiming waste water produced in potato starch manufacturing | |
| CN215250117U (en) | Marine dredged material processing device | |
| CN215559798U (en) | Sediment dehydration device is dredged in river course |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210706 |
|
| RJ01 | Rejection of invention patent application after publication |