CN115340269A - Rural river sediment solidification conditioning and resource utilization method - Google Patents
Rural river sediment solidification conditioning and resource utilization method Download PDFInfo
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- CN115340269A CN115340269A CN202211009894.1A CN202211009894A CN115340269A CN 115340269 A CN115340269 A CN 115340269A CN 202211009894 A CN202211009894 A CN 202211009894A CN 115340269 A CN115340269 A CN 115340269A
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- 239000013049 sediment Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000003750 conditioning effect Effects 0.000 title claims abstract description 41
- 238000007711 solidification Methods 0.000 title claims abstract description 26
- 230000008023 solidification Effects 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 40
- 238000001723 curing Methods 0.000 claims abstract description 38
- 239000002689 soil Substances 0.000 claims abstract description 31
- 239000001814 pectin Substances 0.000 claims abstract description 20
- 235000010987 pectin Nutrition 0.000 claims abstract description 20
- 229920001277 pectin Polymers 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 235000015097 nutrients Nutrition 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 7
- 238000011065 in-situ storage Methods 0.000 claims abstract description 6
- 239000010802 sludge Substances 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 239000000843 powder Substances 0.000 claims description 29
- 241000196324 Embryophyta Species 0.000 claims description 24
- 238000000855 fermentation Methods 0.000 claims description 22
- 230000004151 fermentation Effects 0.000 claims description 22
- 239000011398 Portland cement Substances 0.000 claims description 20
- 229910000281 calcium bentonite Inorganic materials 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 244000144972 livestock Species 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 244000144977 poultry Species 0.000 claims description 10
- 210000003608 fece Anatomy 0.000 claims description 9
- 239000010871 livestock manure Substances 0.000 claims description 9
- 239000002361 compost Substances 0.000 claims description 8
- 238000009264 composting Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 3
- 241000531314 Premna microphylla Species 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 239000003895 organic fertilizer Substances 0.000 claims 1
- 239000004568 cement Substances 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 241000207199 Citrus Species 0.000 description 14
- 235000020971 citrus fruits Nutrition 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000001143 conditioned effect Effects 0.000 description 5
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 244000276331 Citrus maxima Species 0.000 description 2
- 235000001759 Citrus maxima Nutrition 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 2
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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
-
- 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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention relates to a rural river sediment solidification conditioning and resource utilization method, and belongs to the field of rural black and odorous river sediment treatment. The method comprises the following steps: stacking the just dredged river sediment, and naturally drying and dehydrating; adding pectin-rich plant material and in-situ-retrievable material into the dehydrated river sediment; uniformly mixing and stirring the substrate sludge doped with the materials, and performing resource treatment; and (4) carrying out resource utilization on the bottom mud subjected to resource treatment, and respectively using the bottom mud for slope curing and landscaping of the riverway. The method can solve the problems that the traditional solidification and stabilization technology is not environment-friendly due to excessive cement doping, the existing garden greening nutrient soil is high in preparation cost and the like, realizes the in-situ resource utilization of the rural river sediment, and reduces the pollution to the environment.
Description
Technical Field
The invention relates to a rural river sediment solidification conditioning and resource utilization method, and belongs to the field of rural black and odorous river sediment treatment.
Background
The rural river sediment is used as an important component of rural water environment and plays an important role in the ecological environment of the healthy water in the rural river. The current causes of the pollution of the bottom mud of the rural river mainly comprise: (1) The domestic water of rural residents is discharged in a centralized or dispersed way to pollute the environment. And (2) agricultural non-point source pollution. Mainly comprises the inflow of pesticides, fertilizer residues, partial soil nutrients and organic matters. (3) pollution of livestock and poultry breeding in rural areas. And (4) wastewater discharge pollution of rural township enterprises. And (5) diffusing pollutants deposited by the river sediment. The river sediment pollution source, the water body degradation and the pollutant deposition influence show certain difference, but the rural river sediment generally has the characteristics that the total nitrogen and total phosphorus concentration exceeds the standard, and the organic matter content is slightly higher than that of the urban river. At present, rural river sediment rich in nitrogen, phosphorus and organic matters is usually directly buried after dredging, and resource waste is caused.
The in-situ resource utilization of the dredged sediment means that the physicochemical property of the dredged sediment is adjusted by a physical chemical or biological method, and the sediment is utilized near a river channel under the condition of controlling various pollutants in the sediment and aiming at reducing the transportation cost and the principle of the neighborhood, so that the method is particularly suitable for rural areas with inconvenient traffic or underdeveloped economy. Common on-site resource utilization modes of the bottom mud include farmland farming, vegetable planting, landscaping, compost fermentation, ecological slope protection and the like. However, because the bottom sludge has high water content, low strength and complex pollutant components, direct utilization is easy to cause secondary pollution to the environment, and therefore, the bottom sludge needs to be conditioned or solidified and stabilized before being recycled.
At present, cement is a main material of the traditional solidification/stabilization technology, but the sediment after cement solidification can only be used for building materials or landfill due to too much cement mixing amount and higher alkalinity and salt content, and if land utilization is carried out in rural areas, soil alkalization is easy to cause, the method is not environment-friendly and is not suitable for plant growth. Meanwhile, the raw materials for preparing the landscaping nutrient soil at present need to purchase a large amount of agricultural materials, and the cost is generally high.
Therefore, the low-cost and environment-friendly curing and conditioning method is suitable for rural river sediment resource utilization, and can promote rural river sediment to realize resource utilization after curing and conditioning.
Disclosure of Invention
The invention provides a rural river sediment solidifying, conditioning and resource utilization method aiming at the problems,
the invention adopts the following technical scheme:
the invention relates to a rural river sediment curing, conditioning and resource utilization method, which comprises the following steps:
stacking the just dredged river sediment, and naturally drying and dehydrating;
step (2), plant materials rich in pectin and in-situ retrievable materials are doped into the dehydrated river sediment;
step (3), uniformly mixing and stirring the substrate sludge doped with the material, and performing resource treatment;
and (4) carrying out resource utilization on the bottom mud subjected to resource treatment, and respectively using the bottom mud for slope curing and landscaping of the riverway.
The invention relates to a rural river sediment solidification conditioning and resource utilization method, which comprises the following steps that in the step (1), river sediment is naturally dried and dehydrated, and is dried for 1-4 days when being used for curing a side slope of a river, and the water content of the river sediment is controlled as follows: 45 to 65 percent;
drying the nutrient soil for preparing the landscaping needs 1 to 3 days, and controlling the water content of the river sediment as follows: 50 to 60 percent.
The invention relates to a rural river sediment solidification conditioning and resource utilization method, wherein the pectin-rich plant material in the step (2) comprises the following steps: one or more of pericarpium Citri Tangerinae, pericarpium Citri Grandis, caulis Premnae Microphyllae, and herba Portulacae, and is prepared into dry powder;
the in-situ taken material is one or more of ordinary portland cement, calcium bentonite and livestock and poultry manure.
According to the rural river sediment solidification conditioning and resource utilization method, the pectin-rich plant material and the calcium bentonite are dry solid powder, and the diameter of each material is less than or equal to 200 meshes.
The rural river channel bottom mud curing, conditioning and recycling method provided by the invention is characterized in that the river channel bottom mud recycling method for slope curing in the step (3) comprises the following steps:
1) Uniformly stirring the dehydrated river sediment, dry powder of plant materials rich in pectin, calcium bentonite and ordinary portland cement;
2) Adopting a wooden frame to form a grid-type wooden frame in a splicing shape, and fixing the grid-type wooden frame on a bank slope;
3) And paving the river channel bottom mud obtained in the step 1) into a grid-type wooden frame.
According to the rural river sediment solidification conditioning and resource utilization method, the thickness of the river sediment paved by the wooden frame is 10-15 cm.
The rural river sediment solidifying, conditioning and resource utilization method comprises the following steps of 1) mixing river sediment, pectin-rich plant material dry powder, calcium bentonite and ordinary portland cement in the following weight part ratio:
100 to 120 parts by weight of dehydrated river sediment,
1 part by weight of pectin-rich plant material dry powder,
0.5 to 1 weight portion of calcium bentonite,
2-4 parts of ordinary portland cement.
The invention relates to a rural river sediment solidification conditioning and resource utilization method, which is characterized in that the river sediment resource treatment method for landscaping comprises the following steps:
1) Mixing and standing the dehydrated river sediment and the plant material rich in pectin for primary fermentation, and sealing the river sediment by adopting agricultural film sealing; the duration of the first fermentation is as follows: 20 to 30 days;
2) After the first fermentation is finished, a mixture is produced, the mixture and the livestock and poultry manure are mixed and stirred uniformly, and a transparent agricultural film is continuously covered for carrying out second composting fermentation;
3) In the second compost fermentation process, the fermentation time is 40-60 days, and the compost fermentation temperature is controlled to be 40-55 ℃; turning over the compost for fermentation every 18-21 days;
4) And after the second composting fermentation is finished, the second compost fermentation can be used for landscaping and laying.
The invention relates to a rural river sediment solidification conditioning and resource utilization method, which comprises the following steps of:
the bottom mud of the dehydrated river channel is as follows: 1 part by weight;
the pectin-rich plant material is: 0.3 to 0.5 weight part;
the livestock and poultry manure is as follows: 0.5 to 0.7 weight portion.
According to the rural river sediment solidifying, conditioning and resource utilization method, the diameter of the pectin-rich plant material in the step 4) is less than or equal to 0.4cm; the thickness of the bottom mud for the river for landscaping is 1-4 cm.
Advantageous effects
According to the rural river sediment curing, conditioning and resource utilization method provided by the invention, when the cured and conditioned sediment is used for slope curing, pectin-rich materials such as citrus peel powder, shaddock peel powder, premna microphylla powder and purslane are used as curing materials, and the method belongs to locally-available, purely-natural and environment-friendly materials in rural areas, can greatly reduce the use amount of cement, and reduces the environmental risk of resource utilization of the sediment.
According to the rural river channel bottom mud curing conditioning and resource utilization method provided by the invention, when the cured and conditioned bottom mud is used for slope curing, the problems of erosion of natural soil slopes and water and soil loss can be reduced, the ecological environment of river channels can be improved, and environment-friendly revetments are built.
According to the rural river sediment curing, conditioning and resource utilization method provided by the invention, when the cured and conditioned sediment is used for landscaping, the landscaping nutrient soil prepared by composting and fermenting the sediment can improve the physical properties of the sediment, is suitable for plant growth, fully utilizes the nutrient elements required by plants such as carbon, nitrogen, phosphorus and the like contained in the rural river sediment, and can reduce the preparation cost of the landscaping nutrient soil.
The rural river sediment solidification conditioning and resource utilization method provided by the invention is based on the concept of 'treating wastes with wastes', effectively utilizes agricultural waste materials such as citrus peels, shaddock peels, livestock and poultry manure and the like, and solves the problem of agricultural waste disposal.
According to the rural river sediment curing, conditioning and resource utilization method provided by the invention, the rural river sediment is used for landscaping after being cured and conditioned, and is also used for ecological slope protection of the rural river, so that the rural river sediment can be conveniently recycled in situ, and the treatment and disposal cost after sediment dredging can be reduced.
Drawings
FIG. 1 is a diagram of an example of the application of rural river sediment curing conditioning of the present invention;
FIG. 2 is a schematic structural diagram of resource utilization of the rural river sediment after solidification and conditioning;
FIG. 3 is a top view of the effect of resource utilization of the rural river sediment after solidification and conditioning;
fig. 4 is a wood frame splicing diagram for resource utilization after curing and conditioning of the rural river sediment.
In the figure, 1 is a plant layer, 2 is a planting soil layer, 3 is a nutrition soil layer, 4 is a bottom mud curing layer, 5 is an undisturbed soil slope, 6 is a wooden frame and 7 is a wooden pile.
Detailed Description
In order to make the purpose and technical solution of the embodiments of the present invention clearer, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Examples 1-5 sediment curing conditioning (suitable for slope curing); according to the weight portion, 0-1 portion of dried orange peel material is firstly crushed and ground to more than 200 meshes, then the dried orange peel material is mixed and stirred uniformly with 0.5-1 portion of 500-mesh calcium bentonite, 3-4 portions of ordinary portland cement and 100-120 portions of bottom mud which is naturally dried and dehydrated for 2 days after being dredged, and the mixture is placed at normal temperature for curing for 7 days.
Example 1: mixing and stirring 0 part by weight of orange peel powder, 0.5 part by weight of calcium bentonite, 5 parts by weight of ordinary portland cement and 100 parts by weight of dehydrated bottom mud uniformly, and curing at normal temperature;
example 2: adding citrus peel powder and reducing the amount of ordinary portland cement on the basis of example 1, mixing and stirring 1 part by weight of citrus peel powder, 0.5 part by weight of calcium bentonite, 3 parts by weight of ordinary portland cement and 100 parts by weight of dehydrated bottom mud uniformly, and curing at normal temperature;
example 3: adding the amount of the citrus peel powder on the basis of the embodiment 2, uniformly mixing and stirring 1.5 parts by weight of the citrus peel powder, 0.5 part by weight of calcium bentonite, 3 parts by weight of ordinary portland cement and 100 parts by weight of dehydrated bottom mud, and maintaining at normal temperature;
example 4: adding the amount of calcium-based bentonite on the basis of the embodiment 2, uniformly mixing and stirring 1 part by weight of citrus peel powder, 1 part by weight of calcium-based bentonite, 3 parts by weight of ordinary portland cement and 100 parts by weight of dehydrated bottom mud, and curing at normal temperature;
example 5: the amount of dewatered bottom mud was increased from that of example 4, and 1 part by weight of citrus peel powder, 1 part by weight of calcium bentonite, 3 parts by weight of ordinary portland cement, and 120 parts by weight of dewatered bottom mud were mixed and stirred uniformly, followed by curing at normal temperature.
The specific compositions of the solidified material and the bottom mud are shown in table 1.
Table 1 the ratio of the curing material to the bottom mud in 5 examples (parts by weight):
| proportioning composition | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Citrus peel powder | 0 | 1 | 1.5 | 1 | 1 |
| Calcium bentonite | 0.5 | 0.5 | 0.5 | 1 | 1 |
| |
5 | 3 | 3 | 3 | 3 |
| Dewatered bottom mud | 100 | 100 | 100 | 100 | 120 |
The strength of the solidified sediment is tested according to the GB/T50081-2019 concrete physical and mechanical property test method standard, the test results are shown in Table 2, and the solidified strength meets the requirement of the strength of the river bank side slope.
Table 2 strength of the sediment solidification:
| curing method | Strength (kPa) |
| Example 1 | 1028.76 |
| Example 2 | 1107.34 |
| Example 3 | 976.83 |
| Example 4 | 1206.11 |
| Example 5 | 1008.40 |
As shown in Table 2, the strength of example 2 is obviously higher than that of example 1, which shows that the addition of a proper amount of orange peel powder can greatly reduce the use amount of ordinary portland cement while ensuring the strength of solidified soil;
example 3, the strength is reduced, which indicates that the excessive addition of the citrus peel powder can reduce the strength of the solidified soil;
example 4 the strength is obviously improved, which shows that the strength of the solidified soil can be improved by increasing the amount of the calcium bentonite;
example 5 the strength decreased, indicating that increasing the amount of dewatered bottom mud decreased the solidified soil strength.
As shown in fig. 2 to 4, the structure of the present invention: the bed mud solidified layer 4 laid on the undisturbed soil slope 5 is sequentially laid with a bed mud compost fermented nutrient soil layer 3 and a planting soil layer 2 from inside to outside on the bed mud solidified layer 4, and a plant layer 1 is arranged on the planting soil layer 2. In addition, a wooden frame 6 and a wooden pile 7 are arranged around the ecological protection slope, and the height of the wooden frame is larger than that of the planting soil layer 2.
As shown in fig. 3: the effect plan view of the rural river sediment solidification conditioning and resource utilization method is adopted.
As shown in fig. 4: the wood frame splicing map of the rural river sediment curing conditioning and resource utilization method is adopted.
The construction process of the rural river sediment solidification conditioning and resource utilization method adopted by the invention comprises the following steps:
firstly, trimming and cutting an undisturbed soil slope 5; and removing sundries on the surface of the side slope, and finishing, cutting and tamping the undisturbed soil side slope 5 to a certain extent according to the geological condition and the slope protection structure of the formed slope protection, wherein the slope protection slope is 30 degrees.
Secondly, laying a side slope grid type wood frame; rural local waste timber can be got to net type wooden frame material, the length and width of single net gape is the same, 2m is got to this embodiment, height 20cm, thickness 6cm, side slope net type wooden frame is the concatenation and distributes, and 6 both ends of wooden frame are equipped with stake 7, and stake 7 adopts the iron nail fixed with wooden frame 6, and stake 7 is transversely evenly arranged along the side slope, and 7 cm wide 6cm of stake stretch out frame 20cm, and bottom stake 7 is arranged according to interval 2 m.
Thirdly, paving a rural river sediment curing layer 4;
the orange peel powder with the grain size smaller than 200 meshes, the calcium bentonite with the grain size of 500 meshes and the ordinary portland cement which are naturally dried and ground are mixed and then mixed with the rural river sediment which is dredged and naturally dried and dehydrated for 2 days for stirring, and then the mixed sediment after the mixture is stirred is laid in the wooden frame 6 to form the sediment curing layer 4. The thickness of the bottom sediment solidified layer 4 is 10cm.
The weight fraction proportions of the citrus peel powder, the calcium bentonite, the ordinary portland cement and the dehydrated bottom mud are as follows: 1 part by weight of citrus peel powder, 0.5 part by weight of calcium bentonite, 2 parts by weight of ordinary portland cement, and 100 parts by weight of sediment after 2 days of dehydration (the proportion adopts the proportion of the example 1 in the table 1, and the strength of the sediment after curing and conditioning can reach 1002.84kPa after curing for 7 days at normal temperature, thereby meeting the requirement of the strength of a bank slope).
Fourthly, preparing a bottom mud landscaping fermentation nutrient soil layer 3;
mixing and stirring the dredged and naturally dried bottom sediment after 2 days with citrus peel powder with the diameter of less than 0.4cm, stacking, covering with a transparent agricultural film, standing and fermenting for 30 days for the first time, mixing the mixture fermented for the first time with livestock and poultry manure with the diameter of less than 1cm, mixing and stirring uniformly again, covering with the transparent agricultural film continuously, and composting and fermenting for 60 days for the second time. The fermentation temperature is controlled between 40 ℃ and 55 ℃, and the pile is turned once every 20 days. The weight fraction ratio of the bottom sediment compost fermentation material is as follows: 1 part of rural river sediment, 0.4 part of citrus peel powder and 0.7 part of livestock and poultry manure.
Fifthly, laying a nutrient soil layer 3 and a planting soil layer 2; and sequentially laying a bottom mud fermented nutrient soil layer 3 and a local planting soil layer 2 on the bottom mud solidified layer 4, wherein the thickness of the bottom mud fermented nutrient soil layer is 2cm, and the local planting soil layer is 6cm.
Sixthly, sowing the plant ryegrass; and sowing the seeds of the dominant plant species ryegrass on the ecological slope protection with the solidified sludge.
Seventhly, maintaining the plants; careful maintenance is needed after sowing, watering is needed in time when drought is found, and insect damage is needed to be treated in time when insect damage is found, so that the greening effect is ensured until the plants cover the whole slope.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (10)
1. A rural river sediment solidification conditioning and resource utilization method is characterized by comprising the following steps: the method comprises the following steps:
stacking the just dredged river sediment, and naturally drying and dehydrating;
step (2), plant materials rich in pectin and locally-available materials are mixed into the dehydrated river sediment;
step (3), uniformly mixing and stirring the substrate sludge doped with the material, and performing resource treatment;
and (4) carrying out resource utilization on the bottom mud subjected to resource treatment, and respectively using the bottom mud for slope solidification and landscaping of the river.
2. The rural river sediment solidification conditioning and resource utilization method according to claim 1, characterized in that: naturally drying and dehydrating the river sediment in the step (1), wherein the drying is required for 1 to 4 days when the river sediment is used for curing the side slope of the river, and the water content of the river sediment is controlled as follows: 45% -65%;
drying for 1 to 3 days is needed for preparing the landscaping nutrient soil, and controlling the water content of the river sediment as follows: 50% -60%.
3. The rural river sediment curing, conditioning and resource utilization method according to claim 1, characterized in that: the pectin-rich plant material in step (2) comprises: one or more of pericarpium Citri Tangerinae, pericarpium Citri Grandis, premna microphylla, and herba Portulacae, and is prepared into dry powder;
the in-situ taken material is one or more of ordinary portland cement, calcium bentonite and livestock and poultry manure.
4. The rural river sediment solidification conditioning and resource utilization method according to claim 3, characterized in that: the pectin-rich plant material and the calcium bentonite are dry solid powder, and the diameter of the powder of each material is less than or equal to 200 meshes.
5. The rural river sediment solidification conditioning and resource utilization method according to claim 1, characterized in that: the river sediment recycling treatment method for slope curing in the step (3) is as follows:
1) Uniformly stirring the dehydrated river sediment, dry powder of plant materials rich in pectin, calcium bentonite and ordinary portland cement;
2) Adopting a wooden frame to form a grid-type wooden frame in a splicing manner, and fixing the grid-type wooden frame on a bank slope;
3) And paving the river sediment obtained in the step 1) into a grid-type wooden frame.
6. The rural river sediment curing, conditioning and resource utilization method according to claim 5, characterized in that: the thickness of the river sediment paved by the wooden frame is 10 to 15cm.
7. The rural river sediment solidification conditioning and resource utilization method according to claim 5, characterized in that: the weight parts of the river sediment in the step 1), the pectin-rich plant material dry powder, the calcium bentonite and the ordinary portland cement are as follows:
100 to 120 parts by weight of dehydrated river sediment,
1 part by weight of pectin-rich plant material dry powder,
0.5 to 1 weight portion of calcium bentonite,
2 to 4 parts by weight of ordinary portland cement.
8. The rural river sediment curing, conditioning and resource utilization method according to claim 1, characterized in that: a river bed mud resourceful treatment mode for afforestation does:
1) Mixing and standing the dehydrated river sediment and the plant material rich in pectin for primary fermentation, and sealing the river sediment by adopting agricultural film sealing; the duration of the first fermentation is as follows: 20 to 30 days;
2) After the first fermentation is finished, a mixture is produced, the mixture and the livestock and poultry manure are mixed and stirred uniformly, and a transparent agricultural film is continuously covered for carrying out second composting fermentation;
3) In the second composting fermentation process, controlling the composting fermentation temperature to be 40 to 55 ℃ for 40 to 60 days; turning over the pile once every 18 to 21 days to perform compost fermentation on the mixture;
4) And after the second composting fermentation is finished, the water-based organic fertilizer can be used for landscaping and paving.
9. The rural river sediment curing, conditioning and resource utilization method according to claim 8, characterized in that: the river sediment for landscaping comprises the following components in parts by weight:
the bottom mud of the dehydrated river channel is: 1 part by weight;
the pectin-rich plant material is: 0.3 to 0.5 weight part;
the livestock and poultry manure is as follows: 0.5 to 0.7 part by weight.
10. The rural river sediment solidification conditioning and resource utilization method according to claim 9, characterized in that: the diameter of the pectin-rich plant material in the step 4) is less than or equal to 0.4cm; the paving thickness of the river sediment for landscaping is 1 to 4cm.
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