CN101805104A - Soil treatment method for dredged sediment - Google Patents
Soil treatment method for dredged sediment Download PDFInfo
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- CN101805104A CN101805104A CN 201010158943 CN201010158943A CN101805104A CN 101805104 A CN101805104 A CN 101805104A CN 201010158943 CN201010158943 CN 201010158943 CN 201010158943 A CN201010158943 A CN 201010158943A CN 101805104 A CN101805104 A CN 101805104A
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- 239000002689 soil Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000013049 sediment Substances 0.000 title abstract 7
- 238000007711 solidification Methods 0.000 claims abstract description 16
- 230000008023 solidification Effects 0.000 claims abstract description 16
- 239000002028 Biomass Substances 0.000 claims abstract description 13
- 230000008635 plant growth Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 11
- 239000002131 composite material Substances 0.000 claims description 10
- 238000009313 farming Methods 0.000 claims description 7
- 239000004568 cement Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 238000010298 pulverizing process Methods 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 3
- 238000013467 fragmentation Methods 0.000 claims description 3
- 238000006062 fragmentation reaction Methods 0.000 claims description 3
- 239000010903 husk Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- 239000003337 fertilizer Substances 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- QJZYHAIUNVAGQP-UHFFFAOYSA-N 3-nitrobicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic acid Chemical compound C1C2C=CC1C(C(=O)O)C2(C(O)=O)[N+]([O-])=O QJZYHAIUNVAGQP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004021 humic acid Substances 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000011148 porous material Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 6
- 241000196324 Embryophyta Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 241000209082 Lolium Species 0.000 description 3
- 241000209094 Oryza Species 0.000 description 3
- 235000013339 cereals Nutrition 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000010797 grey water Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a soil treatment method for dredged sediment, which comprises a solidification step for the dredged sediment and a soil treatment step for solidified soil. After grinded biomass is mixed with the crushed dredged sediment solidified soil, the requirement on the plant growth can be met through filling treatment for a period of time. Therefore, during the solidification treatment for the sediment, the cost of the solidification treatment is greatly saved only by meeting the requirement of the lowest intensity man-machine cultivation. After the solidification treatment, the crushed biomass is added for mixing so as to regulate the structure and pores of the solidified soil; and the pH value of the solidified soil is reduced by using the characteristics that the biomass is degraded to generate humic acid. Due to the soil treatment method for the dredged sediment, high water content dredged sediment in the flow state can be rapidly converted into soil for greening or planting.
Description
Technical field
The present invention relates to a kind of soil treatment process of dredging bed mud, be applicable to the fast processing and the recycling engineering of the high-moisture percentage bed mud that produces in the dredging engineerings such as river, lake, reservoir, pond, harbour, navigation channel, belong to water conservancy and field of environment engineering technology.
Background technology
The dredging bed mud is a kind of engineering solid waste of high-moisture percentage, can't directly utilize, the dredging bed mud of landlocked product adopts the method that forever place in the stockyard of building usually, this just need take a large amount of land resources, and the pollutent in the stockyard also easily to external world's diffusion, exists very big secondary pollution risk.Along with carrying out in a large number of water conservancy and water environment treatment engineering, the stockyard problems of land utilization has become a bottleneck of puzzlement engineering progress, uses as soil resource and therefore need handle the back to bed mud, just can make the stockyard not account for or account for less the soil.The method of bed mud recycling treatment has physics dewatering, firing brick-and tile or haydite method and solidification processing method etc.The physics dehydration method is because dewatering efficiency is low, and the mud after the dehydration is met the shortcoming that water also can produce the secondary argillization, is a kind of halfway resource technology; Though the method for firing brick-and tile or haydite can obtain high value-added product, treatment capacity is limited, can not solve the problem of outlet of a large amount of dredging bed muds.Solidification processing method is by adding solidify material mixing stirring in bed mud, just the bed mud of flow state can be converted into the soil material with certain intensity uses, and the pollutent of inciting somebody to action wherein is enclosed in the cured body, can not produce and pollute, become the main means of China's bed mud recycling treatment surrounding environment.
The curing that a collection of employing arranged at present carries out the patent of fast processing to the dredging bed mud, as China Patent No. 200810019339.0A, and proprietary term: sullage solidifying method; China Patent No. 01112676.0A, proprietary term: curing sludge and technology thereof; China Patent No. 200610035217.1, proprietary term: curing processing method of ocean dredged mud; China Patent No. 200610040093.6A, proprietary term: the constructional method of utilizing solidified earth from sludge; China Patent No. 200610083424.4A, proprietary term: a kind of sludge curing agent and application thereof; China Patent No. 200710070010.2A, proprietary term: muck soil composite curing agent; China Patent No. 200710098329.6A, proprietary term: mud and sand curing agent; China Patent No. 200810019339.0A, proprietary term: sullage solidifying method; China Patent No. 03128333.0, proprietary term: high cement slurry solidifying agent; China Patent No. 03113373.8, proprietary term: Mixed Type Silt Solidification Material.In these patents, basically all adopt silicate and volcanic ash class material mud to be cured processing as solidifying agent, though this method can obtain the solidified earth of higher-strength, but also can cause the pH value of solidified earth higher simultaneously, the hardness of solidified earth is excessive, compact structure is not suitable for plant-growth.Along with the increasing of environmental improvement dynamics, therefore many areas remain to be developed the soil treatment process of bed mud at the needs that carry out all having when bed mud is handled Revegetation and greening.
Summary of the invention
After the present invention is directed in the prior art the common solidification treatment of dredging bed mud, solidified earth intensity and pH value are higher, be not suitable for the deficiency of plant-growth, a kind of soil treatment process of dredging bed mud is provided, to reduce the intensity and the pH value of solidified earth, make its intensity, porosity, water-retentivity, pH value can both satisfy the requirement of greening farming and plant-growth, be applicable to Revegetation and greening place with soil.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of soil treatment process of dredging bed mud, may further comprise the steps: (1) bed mud solidification treatment adopts conventional solidifying agent that bed mud is cured processing to obtain solidified earth, adding conventional solidifying agent in every side's bed mud is 30～150kg, and the unconfined compression strength of this solidified earth is 30～60kPa; (2) the soil processing of solidified earth with the solidified earth fragmentation that obtains in the step (1) after with the biomass mix of pulverizing to obtain composite soil, the addition of described biomass is 1～10% of a solidified earth quality, the direct embankment of composite soil is used, and the earth contact pressure after this composite soil embankment is 25～50kPa, promptly obtain soil processing soil after embankment for some time, this soil processing soil satisfies the requirement of plant-growth.
Described solidifying agent is the one or more kinds of mixtures in cement, lime, gypsum, flyash, industrial residue or the macromolecular material soil-solidified-agent.
Described bed mud results from the dredging engineering in river, lake, reservoir, pond, harbour or navigation channel, and the water ratio of bed mud is 50%～200%.
Biomass are the one or more kinds of mixtures in stalk, rice husk, sawdust and the fertilizer.
The ground pressure of soil processing soil fill foundation is 25～50kPa, and looseness of soil density is 1.0～1.2g/cm
3, porosity is 50～60%, the pH value is 7.5～9.0.
According to above technical scheme, can realize following beneficial effect:
Bed mud is being cured in the processing, is target strength with the minimum intensity that satisfies man-machine farming only, saves the cost of solidification treatment greatly.And after solidification treatment, add broken biomass and mix stirring, with the structure and the hole of adjustment solidified earth, and the characteristics of utilizing biomass degradation to produce humic acid reduce the pH value of solidified earth.By this method, can be fast the high-moisture percentage dredging bed mud of flow state be converted into soil and afforests or plant use.
Embodiment
Embodiment discloses technical scheme of the present invention without limitation, explains related embodiment below with reference to table 1.
The soil treatment process of dredging bed mud of the present invention, may further comprise the steps: (1) bed mud solidification treatment adopts conventional solidifying agent that bed mud is cured processing to obtain solidified earth, adding conventional solidifying agent in every side's bed mud is 30～150kg, and the unconfined compression strength of this solidified earth is 30～60kPa; (2) the soil processing of solidified earth with the solidified earth fragmentation that obtains in the step (1) after with the biomass mix of pulverizing to obtain composite soil, the addition of described biomass is 1～10% of a solidified earth quality, the direct embankment of composite soil is used, and the earth contact pressure after this composite soil embankment is 25～50kPa, satisfy the requirement of strength of man-machine farming, promptly obtain soil processing soil after embankment for some time, although organic matter decomposition rate difference under varying environment, but the present invention obtains the embankment time of soil processing soil and generally was no more than for two weeks, can satisfy the requirement of plant-growth.
Following table is soil treatment step and each step corresponding parameters of three kinds of different sources bed muds:
Table 1
Embodiment 1
(1) the solidification treatment Wuxi tribute arm of lake dredging bed mud of dredging bed mud, water ratio is 66%, glutinous grain content is 19%, organic content is 3.2%, the pH value is 7.2, and when the addition of cement was 50kg/ side's mud, 7 days unconfined compression strengths of curing sludge were 30kPa, the pH value is 11, and density is 1.42g/cm
3, porosity is 35%, this moment, this solidified earth was not suitable for the growth of plant fully.
(2) the above-mentioned solidified earth of the soil processing of solidified earth is even through mix through the pulverizing rice bar of broken back adding 6%, and the density of soil is 1.11g/cm
3, porosity is 54%, and the ground pressure that bankets is 30kPa, and the pH value of placing after 10 days of banketing is 8.5.The improvement mud of this moment can satisfy fully as needed farming intensity of green soil and plant-growth requirement, and through planting experimentally rape, green vegetables and rye grass, each plant all grows fine.
Embodiment 2
(1) the five li arm of lake dredgings in the solidification treatment Wuxi of dredging bed mud bed mud, water ratio is 108%, glutinous grain content is 36%, organic content is 1.45%, and the pH value is 7.6, when the addition of cement is 75kg/ side's mud, when the addition of gypsum is 8kg/ side's mud, 7 days unconfined compression strengths of curing sludge are 40kPa, and the pH value is 11.5, and density is 1.44g/cm
3, porosity is 38%, this moment, this solidified earth was not suitable for the growth of plant fully.
(2) the above-mentioned solidified earth of the soil processing of solidified earth is even through mix through the ground corn bar of broken back adding 8%, and the density of soil is 1.08g/cm
3, porosity is 60%, and the ground pressure that bankets is 35kPa, and the pH value of placing after 14 days of banketing is 8.7.The improvement mud of this moment can satisfy fully as needed farming intensity of green soil and plant-growth requirement, and through planting experimentally rape, green vegetables and rye grass, each plant all grows fine.
Embodiment 3
(1) canal, Dongguan, the solidification treatment Shenzhen dredging bed mud of dredging bed mud, water ratio is 112%, glutinous grain content is 36%, and organic content is 10.79%, and the pH value is 6.5, when the addition of cement is 100kg/ side's mud, the flyash addition is 20kg/ side's mud, and when the addition of gypsum was 10kg/ side's mud, 7 days unconfined compression strengths of curing sludge were 58kPa, the pH value is 11, and density is 1.41g/cm
3, porosity is 39%, this moment, this solidified earth was not suitable for the growth of plant fully.
(2) the above-mentioned solidified earth of the soil processing of solidified earth is even through mix through the rice husk of broken back adding 8%, and the density of soil is 1.06g/cm
3, porosity is 53%, and the ground pressure that bankets is 50kPa, and the pH value of placing after 14 days of banketing is 7.9.The improvement mud of this moment can satisfy fully as needed farming intensity of green soil and plant-growth requirement, and through planting experimentally rape, green vegetables and rye grass, each plant all grows fine.
Claims (5)
1. a soil treatment process of dredging bed mud is characterized in that, may further comprise the steps:
(1) the bed mud solidification treatment adopts solidifying agent that bed mud is cured processing to obtain solidified earth, and the amount of adding solidifying agent in every side's bed mud is 30～150kg, and the unconfined compression strength of this solidified earth is 30～60kPa;
(2) the soil processing of solidified earth with the solidified earth fragmentation that obtains in the step (1) after with the biomass mix of pulverizing to obtain composite soil, the addition of described biomass is 1～10% of a solidified earth quality, the direct embankment of composite soil is used, and the earth contact pressure after this composite soil embankment is 25～50kPa, satisfy the requirement of strength of man-machine farming, promptly obtain soil processing soil after embankment for some time, this soil processing soil satisfies the requirement of plant-growth.
2. according to the soil treatment process of the described dredging bed mud of claim 1, it is characterized in that described solidifying agent is the one or more kinds of mixtures in cement, lime, gypsum, flyash, industrial residue or the macromolecular material soil-solidified-agent.
3. according to the soil treatment process of the described dredging bed mud of claim 1, it is characterized in that described bed mud results from the dredging engineering in river, lake, reservoir, pond, harbour or navigation channel, and the water ratio of bed mud is 50%～200%.
4. according to the soil treatment process of the described dredging bed mud of claim 1, it is characterized in that biomass are the one or more kinds of mixtures in stalk, rice husk, sawdust and the fertilizer.
5. according to the soil treatment process of the described dredging bed mud of claim 1, it is characterized in that the looseness of soil density of the soil processing soil that obtains is 1.0～1.2g/cm after 2 weeks of embankment
3, porosity is 50～60%, the pH value is 7.5～9.0.
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| CN2010101589439A CN101805104B (en) | 2010-04-27 | 2010-04-27 | Soil treatment method for dredged sediment |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229485A (en) * | 2011-04-12 | 2011-11-02 | 中国科学院南京地理与湖泊研究所 | Dredged sediment based plant adaptability matrix and ecological restoration method of bare slope |
| CN102392403A (en) * | 2011-11-16 | 2012-03-28 | 天津市市政工程研究院 | Lime and garbage slag combined method for treating river mud for filling roadbed |
| CN102561264A (en) * | 2012-02-21 | 2012-07-11 | 江苏省环境科学研究院 | Ecological protective slope and establishment method thereof |
| CN103755112A (en) * | 2014-01-13 | 2014-04-30 | 河海大学 | Method for efficiently degrading polluted bottom mud of vegetation and immobilizing industrial sludge by using organisms |
| CN106045420A (en) * | 2016-06-02 | 2016-10-26 | 上海理工大学 | Method for preparing foam sludge bricks from dredged sludge |
| CN108164106A (en) * | 2018-02-02 | 2018-06-15 | 清华大学 | A kind of curing based on abandoned biomass and pollution of river bed mud recycling |
| CN108411884A (en) * | 2018-03-19 | 2018-08-17 | 吴慧明 | A kind of processing method of barged-in fill shallow-layer physical solidification |
| CN108658399A (en) * | 2018-03-21 | 2018-10-16 | 浙江广川工程咨询有限公司 | A kind of solidification reagent of Dredged bed mud heavy metal and its application method and application |
| CN109081538A (en) * | 2018-09-06 | 2018-12-25 | 福州大学 | A kind of river bottom mud curing method implemented based on liquid limit index |
| CN109197524A (en) * | 2018-09-26 | 2019-01-15 | 葛洲坝中固科技股份有限公司 | A kind of gardens cultivated soil and the preparation method and application thereof of high alkalinity river and lake silt preparation |
| CN110002701A (en) * | 2019-03-21 | 2019-07-12 | 中运建设控股有限公司 | Dredged bed mud soil processing method |
| CN110508600A (en) * | 2019-07-23 | 2019-11-29 | 同济大学 | A kind of soil base modification method and shore bank is promoted to expand numerous ecological construction method with plant fixing |
| CN110723938A (en) * | 2019-09-26 | 2020-01-24 | 中电建生态环境集团有限公司 | Fluidized solidified soil and preparation method thereof |
| CN111500292A (en) * | 2020-04-23 | 2020-08-07 | 中国建筑第二工程局有限公司 | Composite type soil material and application thereof in preparing greening planting soil from river and lake dredging mud |
| CN112174625A (en) * | 2020-10-25 | 2021-01-05 | 福州大学 | Environment-friendly dredged sludge modifier and preparation method thereof |
| CN112534984A (en) * | 2020-11-09 | 2021-03-23 | 中冶南方都市环保工程技术股份有限公司 | Method for improving soft clay into planting soil |
| CN113607922A (en) * | 2021-08-04 | 2021-11-05 | 河海大学 | Nitrogen and phosphorus polluted bottom sediment environment-friendly dredging depth determination method based on water pollutant carrying capacity analysis |
| CN114315091A (en) * | 2021-11-23 | 2022-04-12 | 河海大学 | Sludge soil chemical dehydration process and treatment system |
| CN114315096A (en) * | 2021-11-23 | 2022-04-12 | 河海大学 | Sludge soil additive and preparation method and application thereof |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
| CN117399415A (en) * | 2023-09-20 | 2024-01-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Method for forming soil from bottom mud of lake |
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Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229485A (en) * | 2011-04-12 | 2011-11-02 | 中国科学院南京地理与湖泊研究所 | Dredged sediment based plant adaptability matrix and ecological restoration method of bare slope |
| CN102229485B (en) * | 2011-04-12 | 2013-05-01 | 中国科学院南京地理与湖泊研究所 | Dredged sediment based plant adaptability matrix and ecological restoration method of bare slope |
| CN102392403A (en) * | 2011-11-16 | 2012-03-28 | 天津市市政工程研究院 | Lime and garbage slag combined method for treating river mud for filling roadbed |
| CN102561264A (en) * | 2012-02-21 | 2012-07-11 | 江苏省环境科学研究院 | Ecological protective slope and establishment method thereof |
| CN103755112A (en) * | 2014-01-13 | 2014-04-30 | 河海大学 | Method for efficiently degrading polluted bottom mud of vegetation and immobilizing industrial sludge by using organisms |
| CN103755112B (en) * | 2014-01-13 | 2015-07-29 | 河海大学 | A kind of utilize biological high-efficiency to degrade can the polluted bed mud of vegetation and industrial sludge curing |
| CN106045420A (en) * | 2016-06-02 | 2016-10-26 | 上海理工大学 | Method for preparing foam sludge bricks from dredged sludge |
| CN108164106A (en) * | 2018-02-02 | 2018-06-15 | 清华大学 | A kind of curing based on abandoned biomass and pollution of river bed mud recycling |
| CN108164106B (en) * | 2018-02-02 | 2020-12-01 | 清华大学 | Curing method based on resource utilization of waste biomass and river pollution bottom mud |
| CN108411884A (en) * | 2018-03-19 | 2018-08-17 | 吴慧明 | A kind of processing method of barged-in fill shallow-layer physical solidification |
| CN108658399A (en) * | 2018-03-21 | 2018-10-16 | 浙江广川工程咨询有限公司 | A kind of solidification reagent of Dredged bed mud heavy metal and its application method and application |
| CN109081538A (en) * | 2018-09-06 | 2018-12-25 | 福州大学 | A kind of river bottom mud curing method implemented based on liquid limit index |
| CN109197524A (en) * | 2018-09-26 | 2019-01-15 | 葛洲坝中固科技股份有限公司 | A kind of gardens cultivated soil and the preparation method and application thereof of high alkalinity river and lake silt preparation |
| CN110002701A (en) * | 2019-03-21 | 2019-07-12 | 中运建设控股有限公司 | Dredged bed mud soil processing method |
| CN110508600A (en) * | 2019-07-23 | 2019-11-29 | 同济大学 | A kind of soil base modification method and shore bank is promoted to expand numerous ecological construction method with plant fixing |
| CN110723938A (en) * | 2019-09-26 | 2020-01-24 | 中电建生态环境集团有限公司 | Fluidized solidified soil and preparation method thereof |
| CN111500292A (en) * | 2020-04-23 | 2020-08-07 | 中国建筑第二工程局有限公司 | Composite type soil material and application thereof in preparing greening planting soil from river and lake dredging mud |
| CN112174625A (en) * | 2020-10-25 | 2021-01-05 | 福州大学 | Environment-friendly dredged sludge modifier and preparation method thereof |
| CN112534984A (en) * | 2020-11-09 | 2021-03-23 | 中冶南方都市环保工程技术股份有限公司 | Method for improving soft clay into planting soil |
| CN113607922A (en) * | 2021-08-04 | 2021-11-05 | 河海大学 | Nitrogen and phosphorus polluted bottom sediment environment-friendly dredging depth determination method based on water pollutant carrying capacity analysis |
| CN113607922B (en) * | 2021-08-04 | 2023-06-23 | 河海大学 | Environment-friendly dredging depth determination method for nitrogen and phosphorus polluted sediment based on water body pollutant receiving capacity analysis |
| CN114315091A (en) * | 2021-11-23 | 2022-04-12 | 河海大学 | Sludge soil chemical dehydration process and treatment system |
| CN114315096A (en) * | 2021-11-23 | 2022-04-12 | 河海大学 | Sludge soil additive and preparation method and application thereof |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
| CN117399415A (en) * | 2023-09-20 | 2024-01-16 | 中国电力工程顾问集团中南电力设计院有限公司 | Method for forming soil from bottom mud of lake |
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