CN112062443A - Ecological dredging sludge on-site rapid curing process - Google Patents
Ecological dredging sludge on-site rapid curing process Download PDFInfo
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- CN112062443A CN112062443A CN202010793500.0A CN202010793500A CN112062443A CN 112062443 A CN112062443 A CN 112062443A CN 202010793500 A CN202010793500 A CN 202010793500A CN 112062443 A CN112062443 A CN 112062443A
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- sludge
- curing
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- water
- mixed solution
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- 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
- C02F11/008—Sludge treatment by fixation or solidification
-
- 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
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- Engineering & Computer Science (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)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge on-site rapid curing process for ecological dredging, which comprises the following steps: (1) preparation before construction: making rain-proof and waterproof measures in a construction area; (2) sludge collection: the method comprises the following steps of (1) intensively placing sludge on a low-lying open ground, and completely pumping water on the surface layer of the sludge through a water pump; (3) and (3) sludge determination: calculating the total components and the average water content of the sludge to be treated according to the data of each test point; (4) selecting a curing agent: selecting matched curing agent according to the numerical value measured in the step (3), and adding water into the ground curing agent particles to form curing agent mixed liquid; (5) and (3) curing: discharging the curing agent mixed solution onto the sludge through a water pump, stirring the sludge by using an excavator on site until the curing soil is uniform; (6) carrying out curing post-treatment; (7) and (5) maintenance: curing for three days, and avoiding overlarge bearing capacity of the curing soil during curing; (8) and (4) recycling. The invention has good curing effect and simple and effective steps.
Description
Technical Field
The invention relates to a sludge on-site rapid curing process for ecological dredging, which is applied to the technical field of sludge curing.
Background
In recent years, river and port engineering is rapidly developed to generate a large amount of sludge, at present, the sludge is generally treated by a method of arranging a land sludge storage field or directly throwing and filling the sludge in a low-lying area, and the sludge is difficult to be directly utilized in the engineering due to high water content, low strength, large deformation, long consolidation time and the like. In many areas, a large amount of cultivated land and fish ponds are occupied for a long time, land resources are wasted, and the cultivated land is more tense.
In order to solve the problems, the sludge needs to be cured, the curing treatment of the sludge in the current market mainly comprises three types, namely physical dehydration, heating sintering and adding a curing agent, the former two types are suitable for occasions with small treatment capacity and high treatment degree, and the best method is to add the curing agent to treat the sludge with large treatment capacity, but the curing process in the current market has the defects of poor curing effect and low efficiency, and needs to be improved.
Disclosure of Invention
In order to solve the problems, the invention discloses an ecological dredging sludge on-site rapid solidification process, which comprises the following steps:
(1) preparation before construction: paying attention to weather conditions in a construction period during construction, making rainproof measures in a construction area, simultaneously checking positions of a drainage ditch and a water collecting pit in the construction area, and reinforcing the drainage ditch and the water collecting pit;
(2) sludge collection: the method comprises the following steps of (1) intensively placing sludge on a low-lying open ground, and completely pumping water on the surface layer of the sludge through a water pump until the water leaks out of the surface layer of the sludge;
(3) and (3) sludge determination: selecting a plurality of positions on the surface layer of the sludge as detection points, selecting the sludge at each detection point through a sampling device, testing and recording the components and the water content of the sludge at each detection point, and then calculating the total components and the average water content of the sludge to be processed according to the data of each detection point;
(4) selecting a curing agent: selecting a matched curing agent according to the numerical value measured in the step (3), grinding the curing agent for 5-10 min by using a ball mill, doping the ground curing agent particles into water to form a curing agent mixed solution, storing the curing agent mixed solution in a mixed solution tank, configuring a water pump outside the mixed solution tank, and connecting an outlet of the water pump with a water pipe with an outlet arranged above the sludge;
(5) and (3) curing: discharging the curing agent mixed solution onto the sludge through a water pump, stirring the sludge by using an excavator on site until the curing soil is uniform, and achieving a curing effect;
(6) and (3) curing and post-treatment: the solidified soil is firstly discharged and pressed through a caterpillar track of an excavator and then compacted through a road roller, so that the compacting effect is ensured;
(7) and (5) maintenance: covering a film on the surface of the compacted solidified soil, and curing for three days to avoid overlarge bearing of the solidified soil during curing;
(8) and (3) recycling: cured soil after being cured is stored in the collecting bin through the conveying equipment, so that later-period utilization is facilitated.
And (2) before the sludge is discharged to the low-lying empty space, draining accumulated water in the low-lying empty space.
In the step (8), the cured soil after curing can be used for backfilling the sludge excavation land.
By adopting the technical scheme, the invention has the beneficial effects that: according to the method, the preparation in advance in the construction area is made in advance, so that the damage to the curing site caused by unexpected rainfall can be prevented; meanwhile, a plurality of detection points are selected for calculating the average water content and the total components of the sludge, and the most appropriate curing agent can be selected, so that the optimal curing effect is obtained.
Detailed Description
The invention discloses a sludge on-site rapid curing process for ecological dredging, which comprises the following specific steps:
(1) preparation before construction: paying attention to weather conditions in a construction period during construction, making rainproof measures in a construction area, simultaneously checking positions of a drainage ditch and a water collecting pit in the construction area, and reinforcing the drainage ditch and the water collecting pit;
(2) sludge collection: the method comprises the following steps of (1) intensively placing sludge on a low-lying open ground, and completely pumping water on the surface layer of the sludge through a water pump until the water leaks out of the surface layer of the sludge;
(3) and (3) sludge determination: selecting a plurality of positions on the surface layer of the sludge as detection points, selecting the sludge at each detection point through a sampling device, testing and recording the components and the water content of the sludge at each detection point, and then calculating the total components and the average water content of the sludge to be processed according to the data of each detection point;
(4) selecting a curing agent: selecting a matched curing agent according to the numerical value measured in the step (3), grinding the curing agent for 5-10 min by using a ball mill, doping the ground curing agent particles into water to form a curing agent mixed solution, storing the curing agent mixed solution in a mixed solution tank, configuring a water pump outside the mixed solution tank, and connecting an outlet of the water pump with a water pipe with an outlet arranged above the sludge;
(5) and (3) curing: discharging the curing agent mixed solution onto the sludge through a water pump, stirring the sludge by using an excavator on site until the curing soil is uniform, and achieving a curing effect;
(6) and (3) curing and post-treatment: the solidified soil is firstly discharged and pressed through a caterpillar track of an excavator and then compacted through a road roller, so that the compacting effect is ensured;
(7) and (5) maintenance: covering a film on the surface of the compacted solidified soil, and curing for three days to avoid overlarge bearing of the solidified soil during curing;
(8) and (3) recycling: cured soil after being cured is stored in the collecting bin through the conveying equipment, so that later-period utilization is facilitated.
And (2) before the sludge is discharged to the low-lying empty space, draining accumulated water in the low-lying empty space.
In the step (8), the cured soil after curing can be used for backfilling the sludge excavation land.
Finally, it should be noted that: the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention; thus, while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and protected by the following claims.
Claims (3)
1. An on-site rapid solidification process for ecological dredging sludge, which is characterized by comprising the following steps:
(1) preparation before construction: paying attention to weather conditions in a construction period during construction, making rainproof measures in a construction area, simultaneously checking positions of a drainage ditch and a water collecting pit in the construction area, and reinforcing the drainage ditch and the water collecting pit;
(2) sludge collection: the method comprises the following steps of (1) intensively placing sludge on a low-lying open ground, and completely pumping water on the surface layer of the sludge through a water pump until the water leaks out of the surface layer of the sludge;
(3) and (3) sludge determination: selecting a plurality of positions on the surface layer of the sludge as detection points, selecting the sludge at each detection point through a sampling device, testing and recording the components and the water content of the sludge at each detection point, and then calculating the total components and the average water content of the sludge to be processed according to the data of each detection point;
(4) selecting a curing agent: selecting a matched curing agent according to the numerical value measured in the step (3), grinding the curing agent for 5-10 min by using a ball mill, doping the ground curing agent particles into water to form a curing agent mixed solution, storing the curing agent mixed solution in a mixed solution tank, configuring a water pump outside the mixed solution tank, and connecting an outlet of the water pump with a water pipe with an outlet arranged above the sludge;
(5) and (3) curing: discharging the curing agent mixed solution onto the sludge through a water pump, stirring the sludge by using an excavator on site until the curing soil is uniform, and achieving a curing effect;
(6) and (3) curing and post-treatment: the solidified soil is firstly discharged and pressed through a caterpillar track of an excavator and then compacted through a road roller, so that the compacting effect is ensured;
(7) and (5) maintenance: covering a film on the surface of the compacted solidified soil, and curing for three days to avoid overlarge bearing of the solidified soil during curing;
(8) and (3) recycling: cured soil after being cured is stored in the collecting bin through the conveying equipment, so that later-period utilization is facilitated.
2. The rapid in-situ sludge solidification process for ecological dredging according to claim 1, wherein: and (2) before the sludge is discharged to the low-lying empty space, draining accumulated water in the low-lying empty space.
3. The rapid in-situ sludge solidification process for ecological dredging according to claim 1, wherein: in the step (8), the cured soil after curing can be used for backfilling the sludge excavation land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010793500.0A CN112062443A (en) | 2020-08-10 | 2020-08-10 | Ecological dredging sludge on-site rapid curing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010793500.0A CN112062443A (en) | 2020-08-10 | 2020-08-10 | Ecological dredging sludge on-site rapid curing process |
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| CN112062443A true CN112062443A (en) | 2020-12-11 |
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| CN202010793500.0A Pending CN112062443A (en) | 2020-08-10 | 2020-08-10 | Ecological dredging sludge on-site rapid curing process |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001081464A (en) * | 1999-09-10 | 2001-03-27 | Oji Ryokka Kk | Conditioning and improvement of soil |
| CN101220590A (en) * | 2008-01-04 | 2008-07-16 | 东南大学 | Sullage solidifying method |
| CN101885575A (en) * | 2010-07-02 | 2010-11-17 | 广东工业大学 | Solidification/stabilization treatment method for papermaking sludge |
| JP2016000927A (en) * | 2014-06-12 | 2016-01-07 | サン・アンド・シイ・コンサルタント株式会社 | Sludge site stabilization treatment method |
| CN106836186A (en) * | 2016-12-26 | 2017-06-13 | 福建港湾岩土工程集团有限公司 | A kind of construction technology of utilizing solidified earth from sludge |
| CN108755696A (en) * | 2018-06-19 | 2018-11-06 | 江苏东珠景观股份有限公司 | A kind of rapid construction of pit earthwork at raining season method |
| WO2019100512A1 (en) * | 2017-11-24 | 2019-05-31 | 东南大学 | Treatment system for ex-situ carbonization and solidification of silt soil using active magnesium oxide and method thereof |
| CN110294579A (en) * | 2019-04-11 | 2019-10-01 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method of disposal of sludge solidification, resource reutilization |
-
2020
- 2020-08-10 CN CN202010793500.0A patent/CN112062443A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001081464A (en) * | 1999-09-10 | 2001-03-27 | Oji Ryokka Kk | Conditioning and improvement of soil |
| CN101220590A (en) * | 2008-01-04 | 2008-07-16 | 东南大学 | Sullage solidifying method |
| CN101885575A (en) * | 2010-07-02 | 2010-11-17 | 广东工业大学 | Solidification/stabilization treatment method for papermaking sludge |
| JP2016000927A (en) * | 2014-06-12 | 2016-01-07 | サン・アンド・シイ・コンサルタント株式会社 | Sludge site stabilization treatment method |
| CN106836186A (en) * | 2016-12-26 | 2017-06-13 | 福建港湾岩土工程集团有限公司 | A kind of construction technology of utilizing solidified earth from sludge |
| WO2019100512A1 (en) * | 2017-11-24 | 2019-05-31 | 东南大学 | Treatment system for ex-situ carbonization and solidification of silt soil using active magnesium oxide and method thereof |
| CN108755696A (en) * | 2018-06-19 | 2018-11-06 | 江苏东珠景观股份有限公司 | A kind of rapid construction of pit earthwork at raining season method |
| CN110294579A (en) * | 2019-04-11 | 2019-10-01 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method of disposal of sludge solidification, resource reutilization |
Non-Patent Citations (1)
| Title |
|---|
| 谢珂;夏文俊;陈庚;王峻;周欣;: "疏浚淤泥脱水联合固化试验研究", 科学技术与工程, no. 33, pages 195 - 201 * |
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