CN111039542A - Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways - Google Patents

Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways Download PDF

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Publication number
CN111039542A
CN111039542A CN201911415230.3A CN201911415230A CN111039542A CN 111039542 A CN111039542 A CN 111039542A CN 201911415230 A CN201911415230 A CN 201911415230A CN 111039542 A CN111039542 A CN 111039542A
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China
Prior art keywords
sludge
mud
equipment
storage
stirring
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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
Application number
CN201911415230.3A
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Chinese (zh)
Inventor
李登新
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Nanjing Luanxin Environmental Technology Co Ltd
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Nanjing Luanxin Environmental Technology Co Ltd
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Publication date
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Priority to CN201911415230.3A priority Critical patent/CN111039542A/en
Publication of CN111039542A publication Critical patent/CN111039542A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses a treatment system and a treatment process for removing polluted bottom mud in lakes, reservoirs and riverways, which comprises water body isolation equipment, slurry stirring equipment, centrifugal dehydration equipment and sludge storage and transportation equipment which are communicated through pipelines; the water body isolation equipment comprises a plurality of isolation cavities which can be spliced with one another and a crane for taking off, landing and adjusting the isolation cavities; the centrifugal dehydration equipment comprises a sludge conditioning and stirring system, a sludge-mud-water separation system, a sludge dehydration system and a sludge cake spiral conveying and unloading system; the sludge storage and transportation equipment comprises a storage and transportation ship body, a positioning pile for supporting the storage and transportation ship body and a sludge cabin positioned in the storage and transportation ship body, wherein a spiral unloader is arranged in the sludge cabin. The invention adopts a movable treatment station, all equipment is arranged on the ship to operate, land resources are not occupied, the treatment method is simple, the direct separation of bottom mud and water body is realized, the mud-water separation is implemented in real time, and the water content of dry mud is as low as 60%.

Description

Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways
Technical Field
The invention belongs to the technical field of sludge treatment, and particularly relates to a treatment system for removing polluted bottom sludge in lakes, reservoirs and riverways.
Background
The pollution of the bottom mud of the water body is an environmental problem in the world, and the pollutants enter the water body through atmospheric sedimentation, wastewater discharge, rainwater leaching and scouring, are finally deposited in the bottom mud and are gradually enriched, so that the bottom mud is seriously polluted. In a river environment, the bed sediment is transported in a pushed and suspended form, largely resulting in the physical interaction of the overlying water and the sediment. Rivers have strong natural environment and tend to be favorable for the desorption of deposited bottom mud in a river system, so that the water quality of the overlying water can be influenced, pollutants can be reserved, accumulated and migrated in organisms through biological metabolism to generate toxicity and teratogenicity hazards, and not only are benthos of the rivers harmed, but also the health of people is seriously threatened. Therefore, in water quality management programs, contaminated sediment sludge is considered as a source of contamination. At present, the treatment method of the bottom mud of the river can be divided into two technologies of in-situ treatment and ex-situ treatment. Most of them are treated by ex-situ treatment, including engineering dredging, solidification and landfill. However, in the process of dredging sludge, the bottom mud is loosened into slurry by using devices such as a reamer and a water gun, but the loose bottom mud is easy to diffuse along with the flow of water, the diffusion of the bottom mud with pollutants in the water can enlarge the pollution range, and the diffusion of the loose bottom mud can increase the turbidity degree of a river channel and increase the difficulty in treating the river and the lake.
Disclosure of Invention
The invention mainly solves the technical problem of providing a treatment system and a treatment process for removing bottom mud polluted by lakes, reservoirs and riverways, wherein the treatment system adopts a movable treatment station, all equipment is arranged on a ship for operation, land resources are not occupied, the treatment method is simple, the direct separation of the bottom mud and a water body is realized, the mud-water separation is implemented in real time, the water content of dry mud is as low as 60 percent, the system can realize thorough sludge treatment, the transportation speed of the bottom mud is greatly reduced, and the operability is strong.
In order to solve the technical problems, the invention adopts a technical scheme that: a treatment system for removing polluted bottom mud in lakes, reservoirs and riverways comprises water body isolation equipment, slurry stirring equipment, centrifugal dehydration equipment and sludge storage and transportation equipment which are communicated through pipelines;
the water body isolation equipment comprises a plurality of isolation cavities which can be spliced with one another and a crane for taking off, landing and adjusting the isolation cavities;
the slurry stirring equipment comprises a stirring head;
the centrifugal dehydration equipment comprises a sludge conditioning and stirring system, a sludge-mud-water separation system, a sludge dehydration system and a sludge cake spiral conveying and unloading system;
the sludge storage and transportation equipment comprises a storage and transportation ship body, a positioning pile for supporting the storage and transportation ship body and a sludge cabin positioned in the storage and transportation ship body, wherein a spiral unloader is arranged in the sludge cabin.
Further, the cross section of the isolation cavity is circular, square or arc.
Furthermore, a protective net is arranged around the stirring head.
Further, the sludge cake spiral conveying and discharging system is a spiral conveyor.
Further, the sludge dewatering system is an extruder.
Further, the sludge-water separation system is a filter belt type sludge dewatering machine.
Further, the sludge conditioning and stirring system comprises a stirrer and a flocculating agent dosing device communicated with the stirrer.
The treatment process of the treatment system for removing the polluted bottom sludge of the lakes, the reservoirs and the riverways comprises the following steps:
s1, hoisting the bottom mud and the isolation cavity by using a crane, and placing the bottom mud and the isolation cavity into a place where the water body needs to dig the mud;
s2, starting a stirring head, stirring the bottom mud, and conveying the bottom mud to centrifugal dehydration equipment;
the bottom sludge extracted by S3 and S2 is firstly sent to a sludge conditioning and stirring system, a flocculating agent is added, the mixture is fully stirred and mixed and then sent to a sludge-water separation system to realize sludge-water separation and concentration, and the concentrated bottom sludge is extruded by an extruder to be further dehydrated to form a sludge cake;
s4, transporting the mud cakes to the storage and transportation ship body by a screw conveyer and then transporting the mud cakes outwards;
s5, transporting the dry bottom mud out of the ship body to a pointed place for comprehensive utilization or disposal.
The invention has the beneficial effects that: the treatment system adopts a movable treatment station, all equipment is arranged on the ship for operation, land resources are not occupied, the treatment method is simple, the direct separation of bottom sludge and water body is realized, the sludge-water separation is implemented in real time, the water content of dry sludge is as low as 60 percent, the system can realize thorough sludge treatment, the transportation speed of the bottom sludge is greatly reduced, and the operability is strong.
Detailed Description
The following detailed description of the preferred embodiments of the present invention is provided to enable those skilled in the art to more readily understand the advantages and features of the present invention, and to clearly and unequivocally define the scope of the present invention.
Example (b): a treatment system for removing polluted bottom mud in lakes, reservoirs and riverways comprises water body isolation equipment, slurry stirring equipment, centrifugal dehydration equipment and sludge storage and transportation equipment which are communicated through pipelines;
the water body isolation equipment comprises a plurality of isolation cavities which can be spliced with one another and a crane for taking off, landing and adjusting the isolation cavities;
the slurry stirring equipment comprises a stirring head;
the centrifugal dehydration equipment comprises a sludge conditioning and stirring system, a sludge-mud-water separation system, a sludge dehydration system and a sludge cake spiral conveying and unloading system;
the sludge storage and transportation equipment comprises a storage and transportation ship body, a positioning pile for supporting the storage and transportation ship body and a sludge cabin positioned in the storage and transportation ship body, wherein a spiral unloader is arranged in the sludge cabin.
The section of the isolation cavity is circular, square or arc. The main body shape of the isolation cavity can be assembled by assembling plates to be consistent with the shape of the bottom mud of an actual river channel or lake, and one side of the isolation cavity is empty so that the bottom mud can enter the isolation cavity.
And a protective net is arranged around the stirring head. The protective net is used for preventing the stirring pump from being damaged by placing foreign matters such as large stones in front of the stirring head when the bottom mud is pumped.
The sludge cake spiral conveying and discharging system is a spiral conveyer.
The sludge dewatering system is an extruder.
The sludge-water separation system is a filter belt type sludge dewatering machine.
The sludge conditioning and stirring system comprises a stirrer and flocculant dosing equipment communicated with the stirrer.
The treatment process of the treatment system for removing the polluted bottom sludge of the lakes, the reservoirs and the riverways comprises the following steps:
s1, hoisting the bottom mud and the isolation cavity by using a crane, and placing the bottom mud and the isolation cavity into a place where the water body needs to dig the mud; the device can isolate sediment and a water body in a certain area under water so as to extract the sediment and limit the mixing of the water body and the sludge, thereby greatly reducing the extraction amount of the sediment;
s2, starting a stirring head, stirring the bottom mud, and conveying the bottom mud to centrifugal dehydration equipment;
the bottom sludge extracted by S3 and S2 is firstly sent to a sludge conditioning and stirring system, a flocculating agent is added, the mixture is fully stirred and mixed and then sent to a sludge-water separation system to realize sludge-water separation and concentration, and the concentrated bottom sludge is extruded by an extruder to be further dehydrated to form a sludge cake;
s4, transporting the mud cakes to the storage and transportation ship body by a screw conveyer and then transporting the mud cakes outwards;
s5, transporting the dry bottom mud out of the ship body to a pointed place for comprehensive utilization or disposal.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification, or any other related technical fields directly or indirectly, are included in the scope of the present invention.

Claims (8)

1. The utility model provides a processing system that is used for lake, reservoir and river course to pollute bed mud to clear away which characterized in that: comprises water body isolation equipment, slurry stirring equipment, centrifugal dehydration equipment and sludge storage and transportation equipment which are communicated through pipelines;
the water body isolation equipment comprises a plurality of isolation cavities which can be spliced with one another and a crane for taking off, landing and adjusting the isolation cavities;
the slurry stirring equipment comprises a stirring head;
the centrifugal dehydration equipment comprises a sludge conditioning and stirring system, a sludge-mud-water separation system, a sludge dehydration system and a sludge cake spiral conveying and unloading system;
the sludge storage and transportation equipment comprises a storage and transportation ship body, a positioning pile for supporting the storage and transportation ship body and a sludge cabin positioned in the storage and transportation ship body, wherein a spiral unloader is arranged in the sludge cabin.
2. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: the section of the isolation cavity is circular, square or arc.
3. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: and a protective net is arranged around the stirring head.
4. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: the sludge cake spiral conveying and discharging system is a spiral conveyer.
5. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: the sludge dewatering system is an extruder.
6. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: the sludge-water separation system is a filter belt type sludge dewatering machine.
7. A treatment system for the removal of polluted substrate sludge from lakes, reservoirs and rivers according to claim 1, further comprising: the sludge conditioning and stirring system comprises a stirrer and flocculant dosing equipment communicated with the stirrer.
8. The process of claim 1, wherein the treatment system comprises: the method comprises the following steps:
s1, hoisting the bottom mud and the isolation cavity by using a crane, and placing the bottom mud and the isolation cavity into a place where the water body needs to dig the mud;
s2, starting a stirring head, stirring the bottom mud, and conveying the bottom mud to centrifugal dehydration equipment;
the bottom sludge extracted by S3 and S2 is firstly sent to a sludge conditioning and stirring system, a flocculating agent is added, the mixture is fully stirred and mixed and then sent to a sludge-water separation system to realize sludge-water separation and concentration, and the concentrated bottom sludge is extruded by an extruder to be further dehydrated to form a sludge cake;
s4, transporting the mud cakes to the storage and transportation ship body by a screw conveyer and then transporting the mud cakes outwards;
s5, transporting the dry bottom mud out of the ship body to a pointed place for comprehensive utilization or disposal.
CN201911415230.3A 2019-12-31 2019-12-31 Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways Pending CN111039542A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911415230.3A CN111039542A (en) 2019-12-31 2019-12-31 Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911415230.3A CN111039542A (en) 2019-12-31 2019-12-31 Treatment system and treatment process for removing polluted bottom mud of lakes, reservoirs and riverways

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CN111039542A true CN111039542A (en) 2020-04-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113277692A (en) * 2021-06-28 2021-08-20 江西科技学院 Reservoir sediment-based purification process

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334469A (en) * 2013-07-12 2013-10-02 上海宏成实业发展有限公司 Processing system and processing technology for removing river pollution bottom silt in central urban area
TW201520404A (en) * 2013-11-29 2015-06-01 Liang-Xin Zhong Waterway style silt cleaning method
CN105970876A (en) * 2016-04-22 2016-09-28 黄河水利委员会黄河水利科学研究院 Reservoir sand pumping method
CN107217697A (en) * 2017-07-25 2017-09-29 芜湖皖桥园艺有限责任公司 A kind of quick silt remover in river course
CN207092173U (en) * 2017-03-10 2018-03-13 中国科学院武汉岩土力学研究所 A kind of channel cleanout system
CN108275861A (en) * 2018-03-12 2018-07-13 江阴市顺通机械技术有限公司 A kind of environment-friendly type river bottom mud dehydration and drying ship
CN208039342U (en) * 2018-04-16 2018-11-02 庞德众 A kind of municipal works riverway sludge cleaning plant

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103334469A (en) * 2013-07-12 2013-10-02 上海宏成实业发展有限公司 Processing system and processing technology for removing river pollution bottom silt in central urban area
TW201520404A (en) * 2013-11-29 2015-06-01 Liang-Xin Zhong Waterway style silt cleaning method
CN105970876A (en) * 2016-04-22 2016-09-28 黄河水利委员会黄河水利科学研究院 Reservoir sand pumping method
CN207092173U (en) * 2017-03-10 2018-03-13 中国科学院武汉岩土力学研究所 A kind of channel cleanout system
CN107217697A (en) * 2017-07-25 2017-09-29 芜湖皖桥园艺有限责任公司 A kind of quick silt remover in river course
CN108275861A (en) * 2018-03-12 2018-07-13 江阴市顺通机械技术有限公司 A kind of environment-friendly type river bottom mud dehydration and drying ship
CN208039342U (en) * 2018-04-16 2018-11-02 庞德众 A kind of municipal works riverway sludge cleaning plant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113277692A (en) * 2021-06-28 2021-08-20 江西科技学院 Reservoir sediment-based purification process

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Application publication date: 20200421

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