CN110818209A - River and lake sludge solidification ecological slope protection treatment process - Google Patents
River and lake sludge solidification ecological slope protection treatment process Download PDFInfo
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- CN110818209A CN110818209A CN201911092655.5A CN201911092655A CN110818209A CN 110818209 A CN110818209 A CN 110818209A CN 201911092655 A CN201911092655 A CN 201911092655A CN 110818209 A CN110818209 A CN 110818209A
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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
- C02F11/008—Sludge treatment by fixation or solidification
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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
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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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
- E02D1/02—Investigation of foundation soil in situ before construction work
- E02D1/022—Investigation of foundation soil in situ before construction work by investigating mechanical properties of the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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Abstract
The invention discloses a river and lake sludge solidification ecological slope protection treatment process, which comprises the following steps: lake investigation, sampling test, dredging and mud dumping, foreign matter separation, solidification treatment, slope mud discharging, natural maintenance, ecological landscape restoration, wherein the mud solidification agent is an inorganic material, the solidification mechanism is that hydrate needle crystals are generated through hydration and combined with soil to form stable particle groups, so as to achieve the effect of changing the sludge property, the sludge solidification technology can well inhibit the precipitation of heavy metal hexavalent chromium, meanwhile, harmful substances (heavy metal ions) in the target soil are fixed, water quality pollution components such as harmful bacteria, BOD, COD, phosphorus and the like in the target soil are removed, river and lake sludge and other soft soil are effectively converted into benign soil, the sludge solidification strength is adjusted to be used for river and lake slope maintenance, slope greening and the like, the purposes of resource utilization and ecological treatment of river and lake sludge are achieved, and certain circular economic benefits can be generated.
Description
Technical Field
The invention relates to the field of sludge treatment, in particular to a river and lake sludge solidification ecological slope protection treatment process.
Background
At present, the annual total yield of municipal sludge in China exceeds 4000 ten thousand tons, and the data is estimated to reach 6000 to 9000 ten thousand tons in 2020. With the increase of sewage treatment capacity and the stricter treatment standard in China, the sludge output of domestic sewage treatment plants can continue to increase. Ten items of water are specifically provided, and urban sludge treatment is further promoted, the existing sludge treatment facilities basically complete standard-reaching transformation before 2017, and the harmless treatment rate of the municipal sludge on the grade of land and above reaches more than 90% before 2020.
At present, a plurality of bottleneck restriction factors exist in sludge treatment. Firstly, sewage treatment plants are built and put into use in large, medium and small cities in China, but sludge treatment equipment is rarely correspondingly configured; secondly, at present, sewage treatment fees are paid for large, medium and small cities in China, but sludge treatment fees are paid for few cities; thirdly, since the sludge treatment starts late, the construction of the sludge treatment places is not brought into the urban planning of numerous cities, and many cities are difficult to find suitable sludge treatment methods and sludge disposal places, and sludge is usually dewatered to 60% and is transported to the outsides of the cities and stacked in public environments such as farmlands, rivers and the like, so that the environment-friendly effect of sewage treatment is offset, a large amount of land is occupied, and secondary pollution is generated. China has no mandatory requirements on sludge treatment in the legal level, the standard specification development of sludge treatment is lagged, and a mature commercial sludge treatment industrial mode is lacked.
On one hand, the sludge treatment contains a large amount of organic matters, nitrogen, phosphorus, potassium and other substances, and has the utilization surface; on the other hand, part of pollutants contained in the sewage is transferred into the sludge, so that the sludge has high water content, has strong odor and contains a large amount of pathogenic bacteria, heavy metal pollutants such as chromium, mercury and the like, and toxic harmful and carcinogenic substances which are difficult to degrade, if untreated, the pollutants can cause pollution to underground water and soil, the environmental safety and the public health are threatened, and the treatment of the sludge needs to recycle resources under the condition of ensuring that the sludge does not generate secondary pollution any more.
In view of the above situation, the present patent aims to provide a sludge solidification technology, which can reduce the water content of sludge, improve the strength, inhibit the heavy metal precipitation problem in sludge, and effectively convert river and lake sludge and other soft soils into benign soil, so that the sludge can be recycled, the purpose of environmental protection can be achieved, and a certain environmental economic effect can be generated.
Disclosure of Invention
A river and lake sludge solidification ecological slope protection treatment process comprises the following process steps:
(1) river and lake exploration and sampling test
Surveying the sludge environment to be treated, collecting water flow, flow velocity, water quality and sludge index data at the sludge environment, performing laboratory tests on the treated sludge, and determining the type selection and the addition of a curing agent;
(2) dredging and mud pouring
Dredging by using corresponding equipment, and introducing the cleared sludge into a sludge storage tank, wherein the sludge can be treated in situ when the water amount is less;
(3) foreign matter separation
Screening out foreign matters with larger volume in the sludge to be treated, and avoiding influencing the operation of stirring equipment due to overhigh and overhigh volume;
(4) solidification of sludge
Using automatic dosing stirring equipment to perform dosing and stirring operations simultaneously, ensuring that the curing agent is uniformly mixed with the sludge and the hydration reaction is sufficient; the curing effect is enhanced, the curing efficiency is effectively improved, and the cost is saved;
(5) discharging mud and leveling
Discharging the sludge after solidification treatment to a slope surface according to a slope ratio, and carrying out leveling treatment on the surface without tamping;
(6) maintaining
Performing film covering maintenance on the leveled and solidified sludge;
(7) ecological planting
Can directly carry out vegetation planting on the solidified sludge surface after finishing leveling, and can also carry out soil covering planting on the solidified sludge surface to achieve the ecological slope protection effect.
Preferably, after foreign matters are removed from the sludge in the step (3), mechanical pressure filtration is used, so that the water content reaches the solidification treatment standard.
Preferably, the detection of the sludge mixing in the step (1) comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intense heat loss) test, heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), water content and wetting density detection, a curing effect test (curing agent type/curing agent addition amount), COD value determination and pH value determination.
Preferably, the solidified sludge test in the step (4) comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection.
Preferably, the components of the curing agent in the step (4) include phosphate ore, carbide slag, tailing slag and marble slag.
Preferably, the mixing ratio of the phosphate ore, the carbide slag, the tailing slag and the marble slag is 3:3:2: 2.
Preferably, the film coating method in the step (6) is to cover the surface of the solidified sludge as the revetment with a plastic film, the covering days are 28 days, the first 14 days are sprayed with water on the surface of the solidified sludge once every 7 days, and the last 14 days are sprayed with water on the surface of the solidified sludge once every 2 days.
Has the advantages that: the invention provides a river and lake sludge solidification ecological slope protection treatment process, which comprises the following steps: lake investigation, sampling test, dredging and dumping, foreign matter separation, solidification treatment, slope sludge discharge, natural maintenance, ecological landscape restoration, wherein the sludge solidification agent is an inorganic material, the solidification mechanism of the sludge solidification agent is that hydrate needle crystals are generated through hydration and combined with soil to form stable particle groups, so as to achieve the effect of changing the sludge property, the sludge solidification technology can well inhibit the precipitation of heavy metal hexavalent chromium, simultaneously fix harmful substances (heavy metal ions) in object soil, remove water quality pollution components such as harmful bacteria, BOD, COD, phosphorus and the like in the object soil, effectively convert river and lake sludge and other soft soil into benign soil, adjust the sludge solidification strength for river and lake slope maintenance, slope greening and the like, achieve the purposes of resource utilization and ecological treatment of river sludge, and can generate certain circular economic benefit, the detection of sludge adjustment in the step (1) comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intensive heating reduction) test, heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), water content and wetting density detection, a curing effect test (curing agent type/curing agent addition amount), COD value determination and ph value determination, the tests can effectively detect the sludge condition before curing so as to calculate accurate dosage, the solidified sludge test in the step (4) comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection, the method can objectively and accurately react the properties of the solidified sludge so as to detect that the solidified sludge can reach the backfill standard so as to ensure the process effect of the process, the curing agent in the step (4) comprises phosphorus ore, carbide slag, tailing slag and marble slag, the mixing ratio of the phosphorus ore, the carbide slag, the tailing slag and the marble slag is 3:3:2:2, the curing agent can effectively cure the sludge, the film coating method in the step (6) is to cover the surface of the cured sludge serving as the protection slope by using a plastic film, the covering days are 28 days, the water is sprayed on the surface of the cured sludge every 7 days for the first 14 days, and the water is sprayed on the surface of the cured sludge every 2 days for the last 14 days, and the method can prevent the sludge from generating cracks and other problems in the curing process.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1:
a river and lake sludge solidification ecological slope protection treatment process comprises the following process steps:
(1) river and lake exploration and sampling test
The river lifting first-stage construction length is 50 m, the second-stage construction length is 130 m, and the earthwork excavation is 294m3224m of earth fill3Silt solidified slope protection 524.5m3Greening 420m2Surveying the sludge environment, collecting water flow, flow velocity, water quality and sludge index data at the sludge, performing laboratory tests on the treated sludge, and determining the type and addition of a curing agent, wherein the sludge regulation detection comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intense heat reduction) test, heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), water content and wetting density detection, curing effect test (curing agent type/curing agent addition), COD value determination and pH value determination;
(2) dredging and mud pouring
Dredging by using corresponding equipment, and introducing the cleared sludge into a sludge storage tank, wherein the sludge can be treated in situ when the water amount is less;
(3) foreign matter separation
Screening out foreign matters with larger volume in sludge to be treated, avoiding influencing the operation of stirring equipment due to overhigh volume and overhigh hardness, and mechanically filter-pressing the sludge after removing the foreign matters to ensure that the water content reaches the solidification treatment standard;
(4) solidification of sludge
The automatic dosing stirring equipment is used for simultaneously dosing and stirring, so that the curing agent is uniformly mixed with the sludge, the hydration reaction is sufficient, the curing effect is enhanced, the curing efficiency is effectively improved, the cost is saved, and the curing agent (kg/m) is added according to the sludge amount3Added as a cubic sludge solidifying agent) of 85kg/m3The curing agent comprises phosphorus ore, carbide slag, tailing slag and marble slag, the mixing ratio of the components is 3:3:2:2, and after sludge is cured, a sludge curing test comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection;
(5) discharging mud and leveling
Discharging the sludge after solidification treatment to a slope surface according to a slope ratio, and carrying out leveling treatment on the surface without tamping;
(6) maintaining
Performing film covering maintenance on the leveled solidified sludge, wherein the film covering method comprises the steps of covering the surface of the solidified sludge serving as the slope protection with a plastic film for 28 days, sprinkling water on the surface of the solidified sludge every 7 days for the first 14 days, and sprinkling water on the surface of the solidified sludge once every 2 days for the last 14 days;
(7) ecological planting
Can directly carry out vegetation planting on the solidified sludge surface after finishing leveling, and can also carry out soil covering planting on the solidified sludge surface to achieve the ecological slope protection effect.
Example 2:
a river and lake sludge solidification ecological slope protection treatment process comprises the following process steps:
(1) river and lake exploration and sampling test
The river lifting first-stage construction length is 50 m, the second-stage construction length is 130 m, and the earthwork excavation is 294m3224m of earth fill3Silt solidified slope protection 524.5m3Greening 420m2Surveying the sludge environment, collecting water flow, flow velocity, water quality and sludge index data at the sludge, performing laboratory tests on the treated sludge, and determining the type and addition of a curing agent, wherein the sludge regulation detection comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intense heat reduction) test, heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), water content and wetting density detection, curing effect test (curing agent type/curing agent addition), COD value determination and pH value determination;
(2) dredging and mud pouring
Dredging by using corresponding equipment, and introducing the cleared sludge into a sludge storage tank, wherein the sludge can be treated in situ when the water amount is less;
(3) foreign matter separation
Screening out foreign matters with larger volume in sludge to be treated, avoiding influencing the operation of stirring equipment due to overhigh volume and overhigh hardness, and mechanically filter-pressing the sludge after removing the foreign matters to ensure that the water content reaches the solidification treatment standard;
(4) solidification of sludge
The automatic dosing stirring equipment is used for simultaneously dosing and stirring, so that the curing agent is uniformly mixed with the sludge, the hydration reaction is sufficient, the curing effect is enhanced, the curing efficiency is effectively improved, the cost is saved, and the curing agent (kg/m) is added according to the sludge amount3Added as a cubic sludge solidifying agent) 170kg/m3The curing agent comprises phosphorus ore, carbide slag, tailing slag and marble slag, the mixing ratio of the components is 3:3:2:2, and after sludge is cured, a sludge curing test comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection;
(5) discharging mud and leveling
Discharging the sludge after solidification treatment to a slope surface according to a slope ratio, and carrying out leveling treatment on the surface without tamping;
(6) maintaining
Performing film covering maintenance on the leveled solidified sludge, wherein the film covering method comprises the steps of covering the surface of the solidified sludge serving as the slope protection with a plastic film for 28 days, sprinkling water on the surface of the solidified sludge every 7 days for the first 14 days, and sprinkling water on the surface of the solidified sludge once every 2 days for the last 14 days;
(7) ecological planting
Can directly carry out vegetation planting on the solidified sludge surface after finishing leveling, and can also carry out soil covering planting on the solidified sludge surface to achieve the ecological slope protection effect.
Example 3:
a river and lake sludge solidification ecological slope protection treatment process comprises the following process steps:
(1) river and lake exploration and sampling test
The river lifting first-stage construction length is 50 m, the second-stage construction length is 130 m, and the earthwork excavation is 294m3224m of earth fill3Silt solidified slope protection 524.5m3Greening 420m2Surveying the sludge environment, collecting water flow, flow velocity, water quality and sludge index data at the sludge, performing laboratory tests on the treated sludge, and determining the type and addition of a curing agent, wherein the sludge regulation detection comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intense heat reduction) test, heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), water content and wetting density detection, curing effect test (curing agent type/curing agent addition), COD value determination and pH value determination;
(2) dredging and mud pouring
Dredging by using corresponding equipment, and introducing the cleared sludge into a sludge storage tank, wherein the sludge can be treated in situ when the water amount is less;
(3) foreign matter separation
Screening out foreign matters with larger volume in sludge to be treated, avoiding influencing the operation of stirring equipment due to overhigh volume and overhigh hardness, and mechanically filter-pressing the sludge after removing the foreign matters to ensure that the water content reaches the solidification treatment standard;
(4) solidification of sludge
The automatic dosing stirring equipment is used for simultaneously dosing and stirring, so that the curing agent is uniformly mixed with the sludge, the hydration reaction is sufficient, the curing effect is enhanced, the curing efficiency is effectively improved, the cost is saved, and the curing agent (kg/m) is added according to the sludge amount3Added with a cubic sludge solidifying agent) of 300kg/m3The curing agent comprises phosphorus ore, carbide slag, tailing slag and marble slag, the mixing ratio of the components is 3:3:2:2, and after sludge is cured, a sludge curing test comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection;
(5) discharging mud and leveling
Discharging the sludge after solidification treatment to a slope surface according to a slope ratio, and carrying out leveling treatment on the surface without tamping;
(6) maintaining
Performing film covering maintenance on the leveled solidified sludge, wherein the film covering method comprises the steps of covering the surface of the solidified sludge serving as the slope protection with a plastic film for 28 days, sprinkling water on the surface of the solidified sludge every 7 days for the first 14 days, and sprinkling water on the surface of the solidified sludge once every 2 days for the last 14 days;
(7) ecological planting
Can directly carry out vegetation planting on the solidified sludge surface after finishing leveling, and can also carry out soil covering planting on the solidified sludge surface to achieve the ecological slope protection effect.
After completion, each example was extracted for analysis and compared to the prior art to obtain the following data:
according to the data in the table, when the parameters in the embodiment 3 are adopted, the sludge solidification strength is 2844KN/m as the process parameter of the river and lake sludge solidification ecological slope protection treatment process3The pH value of the soil is 7.1, the dissolution amount of hexavalent chromium is 0mg/L, and the prior art standard is that the solidification strength of the sludge is 529KN/m3The pH value of the soil is 8.2, and the dissolution amount of hexavalent chromium is 0.05mg/L, so that the treatment process for the river and lake sludge solidified ecological slope protection has the advantages that the strength of the solidified sludge is higher, the pH value of the soil is closer to neutral, and hexavalent chromium is not dissolved out, so that the treatment process has remarkable superiority.
The invention provides a river and lake sludge solidification ecological slope protection treatment process, which comprises the following steps: dredging, storing, adjusting, injecting, homogenizing and mixing, discharging mud, leveling, maintaining and ecologically planting, wherein a mud solidification medicament is mainly an inorganic material, the solidification mechanism is that a new substance is generated through physical and chemical processes to play a role of a framework and filling pores, the mode of interface contact is changed to achieve the effects of compact structure and improved performance, vegetation is planted on the surface of the solidified mud, the mud solidification technology can reduce the water content of the mud, improve the strength, inhibit the heavy metal precipitation problem in the mud, effectively convert river and lake mud and other soft soil into benign soil, recycle the mud, achieve the aim of environmental protection and generate a certain environmental economic effect, and the mud in the step (2) is subjected to mechanical filter pressing after foreign matters are removed, so that the water content reaches the solidification treatment standard, the method can rapidly remove water in the sludge, the detection of sludge regulation in the step (3) comprises a cone penetration test (on site), a cross shear force test (on site), a loss on ignition (intensive heating loss) test, a heavy metal ion content detection, unconfined compressive strength detection (uniaxial compressive strength test), a water content and wetting density detection, a curing effect test (curing agent type/curing agent addition amount) and a COD value determination, the test can effectively detect the sludge condition before curing so as to calculate the accurate dosage, the sludge curing test in the step (5) comprises a water content ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection, the method can objectively and accurately react the properties of the cured sludge so as to detect that the cured sludge can reach the backfilling standard, in order to ensure the process effect of the process, the curing agent in the step (5) comprises phosphate ore, carbide slag, tailing slag and marble slag, the mixing ratio of the phosphate ore, the carbide slag, the tailing slag and the marble slag is 3:3:2:2, the curing agent can effectively cure the sludge, the film coating method in the step (7) is to cover the surface of the backfilled cured sludge by using a plastic film, the covering days are 28 days, the watering days are 28 days in total, the first 14 days are sprayed with water on the surface of the cured sludge every 7 days, and the later 14 days are sprayed with water on the surface of the cured sludge every 4 days, so that the method can prevent the sludge from generating cracks and other problems in the curing process.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (7)
1. The treatment process for the river and lake sludge solidified ecological slope protection is characterized by comprising the following process steps:
(1) river and lake exploration and sampling test
Surveying the sludge environment to be treated, collecting water flow, flow velocity, water quality and sludge index data at the sludge environment, performing laboratory tests on the treated sludge, and determining the type selection and the addition of a curing agent;
(2) dredging and mud pouring
Dredging by using corresponding equipment, and introducing the cleared sludge into a sludge storage tank, wherein the sludge can be treated in situ when the water amount is less;
(3) foreign matter separation
Screening out foreign matters with larger volume in the sludge to be treated, and avoiding influencing the operation of stirring equipment due to overhigh and overhigh volume;
(4) solidification of sludge
Using automatic dosing stirring equipment to perform dosing and stirring operations simultaneously, ensuring that the curing agent is uniformly mixed with the sludge and the hydration reaction is sufficient; the curing effect is enhanced, the curing efficiency is effectively improved, and the cost is saved;
(5) discharging mud and leveling
Discharging the sludge after solidification treatment to a slope surface according to a slope ratio, and carrying out leveling treatment on the surface without tamping;
(6) maintaining
Performing film covering maintenance on the leveled and solidified sludge;
(7) ecological planting
Can directly carry out vegetation planting on the solidified sludge surface after finishing leveling, and can also carry out soil covering planting on the solidified sludge surface to achieve the ecological slope protection effect.
2. The treatment process for ecological slope protection by river and lake sludge solidification as claimed in claim 1, wherein the sludge in step (3) is subjected to mechanical filter pressing after foreign matters are removed, so that the water content reaches the solidification treatment standard.
3. The treatment process for ecological slope protection by river and lake sludge solidification according to claim 1, wherein the detection of sludge regulation in the step (1) comprises a cone penetration test, a cross shear force test, a loss on ignition test, a heavy metal ion content test, an unconfined compressive strength test, a water content and wetting density test, a solidification effect test, a COD value test and a pH value test.
4. The treatment process for the ecological slope protection by river and lake sludge solidification, as claimed in claim 1, wherein the sludge solidification test in step (4) comprises a water ratio test, a wettability test, a fluidity test, a ph test, a cone penetration test and unconfined compressive strength detection.
5. The process for treating the river and lake sludge solidified ecological slope protection according to claim 1, wherein the curing agent in the step (4) comprises phosphorus ore, carbide slag, tailing slag and marble slag.
6. The process for treating the river and lake sludge solidified ecological slope protection as claimed in claim 5, wherein the mixing ratio of the phosphate ore, the carbide slag, the tailing slag and the marble slag is 3:3:2: 2.
7. The treatment process for ecological slope protection by river and lake sludge solidification according to claim 1, wherein the film covering method in step (6) is to cover the surface of solidified sludge as the slope protection with a plastic film, the covering days are 28 days, the first 14 days are to sprinkle water on the surface of solidified sludge once every 7 days, and the later 14 days are to sprinkle water on the surface of solidified sludge once every 2 days.
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| CN113800735A (en) * | 2021-09-29 | 2021-12-17 | 山东尚科环境工程有限公司 | Industrial sludge solidification treatment method |
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| CN103496833A (en) * | 2013-10-22 | 2014-01-08 | 山东省环境保护科学研究设计院 | Bottom sediment heavy metal pollution modularized ex situ treatment method |
| CN105254166A (en) * | 2015-11-14 | 2016-01-20 | 辽宁工程技术大学 | Dewatered sludge curing agent and preparing method and using method thereof |
| CN105399290A (en) * | 2015-11-30 | 2016-03-16 | 江苏青禾环境修复有限公司 | Rural river channel dredging construction method |
| CN106865927A (en) * | 2017-03-13 | 2017-06-20 | 常州大学 | A kind of living polymer curing agent for processing riverway sludge or sludge |
| CN108929004A (en) * | 2017-05-26 | 2018-12-04 | 北京高能时代环境技术股份有限公司 | Sludge in-situ stabilizes solidification construction technology |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113800735A (en) * | 2021-09-29 | 2021-12-17 | 山东尚科环境工程有限公司 | Industrial sludge solidification treatment method |
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