CN113800721A - Treatment method for ecological restoration of water pollution of farmland water body - Google Patents
Treatment method for ecological restoration of water pollution of farmland water body Download PDFInfo
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- CN113800721A CN113800721A CN202111166852.4A CN202111166852A CN113800721A CN 113800721 A CN113800721 A CN 113800721A CN 202111166852 A CN202111166852 A CN 202111166852A CN 113800721 A CN113800721 A CN 113800721A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B79/00—Methods for working soil
- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a method for treating farmland water pollution ecological restoration, which combines farmland water treatment and soil restoration, improves farmland water circulation and reduces damage of farmland water to ecological environment from a farmland water source and an irrigation process. The soil treatment is implemented by applying a soil treatment agent, so that heavy metal components in the soil are absorbed, and effective components such as phosphorus, potassium, calcium and the like are added, so that the soil fertility is recovered, and the fertilizer for subsequent crop planting is reduced. The removal rates of Chemical Oxygen Demand (COD), ammonia nitrogen and Total Phosphorus (TP) in the farmland water are respectively 96.34-98.31%, 97.89-99.12% and 97.63-98.96%.
Description
Technical Field
The invention relates to the field of ecological restoration, in particular to a method for treating ecological restoration of farmland water body water pollution.
Background
Soil is a valuable resource for human, people eat the food as the day, eat the land as the root and grow in all things, and the soil provides most of material resources required by the human survival development, so that a good soil environment is an important guarantee for the development progress of the human society. Along with the increasing attention of people to the soil pollution problem, the heavy metal polluted soil remediation problem is paid special attention to people. Heavy metal pollutants in soil have the characteristics of high toxicity, long retention time, weak mobility, strong concealment, difficult degradation, easy enrichment along a food chain and the like. The heavy metal pollution of the soil not only influences the surrounding environment and pollutes local organisms, underground water and atmospheric environment, but also enters human bodies through food chains, and the elements exceed a certain threshold value, interfere the normal metabolism of a life system and cause harm to health.
At present, the heavy metal contaminated soil of the farmland is repaired by a physical repair method, a chemical leaching technology, a biological repair method, an agricultural measure regulation and control method and other modes. For example, CN201710059352.8 is a method for remedying heavy metal contaminated farmland by micro-ecology, which comprises applying charcoal powder and mixed bacteria solution of microorganisms into soil along with soil plowing before planting crops; in the middle stage of plant growth, the mixed microbial liquid and the mixed microbial culture medium are sprayed onto the ground surface. CN201711024731.X, a method for restoring As-Cd combined polluted farmland soil by using a biomass-carbon combined system of a hyper-enrichment plant, which comprises the steps of monitoring and sampling farmland soil, determining the variety and planting mode of the hyper-enrichment plant, and realizing enrichment of As and Cd; then applying a compound modifying agent mainly comprising a microbial agent and a chelating agent to the farmland polluted soil to realize the passivation and chelation of As and Cd; then applying the biomass charcoal-based repairing agent on the surface of farmland soil, turning soil, uniformly mixing, and standing; i.e. one processing cycle is completed. The two methods only provide a soil improvement mode, and a method for restoring ecology by combining farmland water is not mentioned. Therefore, the invention provides a method for ecological restoration by combining farmland water.
Disclosure of Invention
In view of the above, the invention provides a method for treating ecological restoration of water pollution of farmland water, which combines farmland water consumption and ecological restoration.
The technical scheme of the invention is realized as follows:
the method comprises the following steps:
(1) soil remediation
Draining: discharging the water in the farmland into a pond A;
ploughing: ploughing the drained farmland to a ploughing depth of 10-20 cm;
fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent comprises the following raw materials in parts by weight: 5-10 parts of hydroxyapatite, 7-11 parts of monocalcium phosphate, 20-25 parts of sepiolite, 12-17 parts of straw, 0.5-1.5 parts of citric acid bacillus, 1-3 parts of penicillium oxalicum and 0.1-0.8 part of klebsiella pneumoniae;
(2) water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, and allowing the farmland water to flow into an artificial treatment pond through the water channel;
and a third stage: sprinkling the microbial preparation on the farmland water flowing into the artificial treatment pond, and standing for 2-3h to obtain the treated farmland water.
Further, in step (2), aquatic plants are planted in the ditch, and the aquatic plants consist of yellow flag, ciliate desert-grass, bitter grass and aquatic canna.
Furthermore, the planting quantity ratio of the water plant calamus flavus, ciliate desert-grass, tape grass and canna aquatica is 2:1:3:1, and the planting density of the water plant is 6000-plus 8000 g/square meter. According to the invention, the research is carried out according to the regional characteristics and the soil combination of the types of metals and the water quality in the farmland water, and the aquatic plants can absorb the metal substances and the organic substances in the farmland water so as to achieve the aim of removing the metal substances and the organic substances in the farmland water.
Further, in the step (2), kaolin, calcite, montmorillonite and volcanic rock are sequentially paved at the bottom of the artificial treatment pond from bottom to top.
Furthermore, the mass ratio of the kaolin to the calcite to the montmorillonite to the volcanic rock is 2:1:3:5, and the paving thickness is 50-60 cm.
Further, in the step (2), the microbial preparation is prepared by mixing the following components in a mass ratio of 1.5-2.5:0.5-1: 2-3: 0.2-0.8 of sphingolipid bacillus, flavobacterium brucellosis, proteus morganii and actinoplanes.
Still further, the adding amount of the microbial preparation is 30-50g/m3。
Further, in the step (1), the using amount of the soil treatment agent is 100-.
Further, the farmland water treated in the step (2) is used for soil irrigation.
Compared with the prior art, the invention has the beneficial effects that:
the invention combines farmland water treatment and soil treatment, and effectively restores the ecological environment polluted by farmland water. The farmland water treatment method effectively removes heavy metal pollutants in the water body and reduces the contents of nitrogen and phosphorus in the water body. The soil treatment is implemented by applying a soil treatment agent, so that heavy metal components in the soil are absorbed, and effective components such as phosphorus, potassium, calcium and the like are added, so that the soil fertility is recovered, and the fertilizer for subsequent crop planting is reduced. The removal rates of Chemical Oxygen Demand (COD), ammonia nitrogen and Total Phosphorus (TP) in the farmland water are respectively 96.34-98.31%, 97.89-99.12% and 97.63-98.96%.
Detailed Description
In order to better understand the technical content of the invention, specific examples are provided below to further illustrate the invention.
The experimental methods used in the examples of the present invention are all conventional methods unless otherwise specified.
The materials, reagents and the like used in the examples of the present invention can be obtained commercially without specific description.
Example 1 treatment method for ecological restoration of water pollution of farmland water body
(1) Soil remediation
Draining: the water in the farm field is discharged to pond a.
Ploughing: and ploughing the drained farmland to a ploughing depth of 10-20 cm.
Fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent is prepared from the following raw materials in parts by weight: 8 parts of hydroxyapatite, 9 parts of monocalcium phosphate, 23 parts of sepiolite, 15 parts of straw, 1 part of bacillus citrate, 2 parts of penicillium oxalicum and 0.5 part of klebsiella pneumoniae, wherein the using amount of the soil treatment agent is 150 g/square meter.
(2) Water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, enabling the farmland water to flow into an artificial treatment pond through the water channel, planting aquatic plants in the water channel, wherein the planting quantity ratio of yellow flag, ciliate desert grass, bitter grass and aquatic canna is 2:1:3:1, the planting density is 7000 g/square meter, and kaolin, calcite, montmorillonite and volcanic rock with the mass ratio of 2:1:3:5 are sequentially paved in the artificial treatment pond from bottom to top, and the paving thickness is 60 cm.
And a third stage: sprinkling a microbial preparation on farmland sewage flowing into an artificial treatment pond, wherein the microbial preparation is prepared from the following components in a mass ratio of 2:0.8: 2.5:0.5 of sphingolipid bacillus, Flavobacterium aquatile, Proteus morganii and Actinoplanes, and the dosage is 40g/m3And standing for 2.5 hours to prepare the treated farmland water.
Example 2 treatment method for ecological restoration of water pollution of farmland water body
(1) Soil remediation
Draining: the water in the farm field is discharged to pond a.
Ploughing: and ploughing the drained farmland to a ploughing depth of 10-20 cm.
Fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent is prepared from the following raw materials in parts by weight: 5 parts of hydroxyapatite, 7 parts of monocalcium phosphate, 20 parts of sepiolite, 12-1 parts of straw, 0.5 part of bacillus citrate, 1 part of penicillium oxalicum and 0.1 part of klebsiella pneumoniae, wherein the using amount of the soil treatment agent is 100g per square meter.
(2) Water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, enabling the farmland water to flow into an artificial treatment pond through the water channel, planting aquatic plants in the water channel, wherein the planting quantity ratio of yellow flag, ciliate desert grass, bitter grass and aquatic canna is 2:1:3:1, the planting density is 6000 g/square meter, and kaolin, calcite, montmorillonite and vesuvianite with the mass ratio of 2:1:3:5 are sequentially paved in the artificial treatment pond from bottom to top, and the paving thickness is 60 cm.
And a third stage: sprinkling a microbial preparation on farmland sewage flowing into an artificial treatment pond, wherein the microbial preparation is prepared by mixing the following components in a mass ratio of 1.5:0.5: 2: 0.2 of sphingolipid bacillus, Flavobacterium aquatile, Proteus morganii and Actinoplanes, and the dosage is 50g/m3And standing for 2 hours to prepare the treated farmland water.
Embodiment 3 treatment method for ecological restoration of water pollution of farmland water body
(1) Soil remediation
Draining: the water in the farm field is discharged to pond a.
Ploughing: and ploughing the drained farmland to a ploughing depth of 10-20 cm.
Fertilizing: the soil treatment agent is put into a farmland, the soil treatment agent comprises the following raw materials, by weight, 5-10 parts of hydroxyapatite, 11 parts of monocalcium phosphate, 25 parts of sepiolite, 17 parts of straws, 1.5 parts of citric acid bacillus, 3 parts of penicillium oxalicum and 0.8 part of klebsiella pneumoniae, and the using amount of the soil treatment agent is 200 g/square meter.
(2) Water body treatment
The first stage is as follows: and filtering the farmland water in the pond A by using a filter screen to obtain the farmland water with the solid pollutants removed.
And a second stage: discharging farmland water from which solid pollutants are removed into a water channel, enabling the farmland water to flow into an artificial treatment pond through the water channel, planting aquatic plants in the water channel, wherein the planting quantity ratio of yellow flag, ciliate desert grass, bitter grass and aquatic canna is 2:1:3:1, the planting density is 8000 g/square meter, and kaolin, calcite, montmorillonite and vesuvianite with the mass ratio of 2:1:3:5 are sequentially paved in the artificial treatment pond from bottom to top, and the paving thickness is 60 cm.
And a third stage: sprinkling a microbial preparation on farmland sewage flowing into an artificial treatment pond, wherein the microbial preparation consists of sphingolipid bacillus, flavobacterium brucellosis, proteus morganii and actinoplanes in a mass ratio of 2.5:1:3:0.8, and the adding amount is 30g/m3And standing for 3 hours to prepare the treated farmland water.
Embodiment 4 treatment method for ecological restoration of water pollution of farmland water body
(1) Soil remediation
Draining: the water in the farm field is discharged to pond a.
Ploughing: and ploughing the drained farmland to a ploughing depth of 10-20 cm.
Fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent is prepared from the following raw materials in parts by weight: 5 parts of hydroxyapatite, 11 parts of monocalcium phosphate, 20 parts of sepiolite, 12 parts of straws, 0.5 part of citric acid bacillus, 3 parts of penicillium oxalicum and 0.6 part of klebsiella pneumoniae, and the using amount of the soil treatment agent is 180 g/square meter.
(2) Water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, enabling the farmland water to flow into an artificial treatment pond through the water channel, planting aquatic plants in the water channel, wherein the planting quantity ratio of yellow flag, ciliate desert grass, bitter grass and aquatic canna is 2:1:3:1, the planting density is 7500 g/square meter, and kaolin, calcite, montmorillonite and vesuvianite with the mass ratio of 2:1:3:5 are sequentially paved in the artificial treatment pond from bottom to top, and the paving thickness is 60 cm.
And a third stage: sprinkling the farmland sewage flowing into the artificial treatment pondThe microbial preparation comprises sphingolipid bacillus, flavobacterium brucellosis, proteus morganii and actinoplanes in a mass ratio of 2.1:0.6:1.4:0.8, and the adding amount is 50g/m3And standing for 3 hours to prepare the treated farmland water.
Example 5 treatment method for ecological restoration of water pollution of farmland water body
(1) Soil remediation
Draining: the water in the farm field is discharged to pond a.
Ploughing: and ploughing the drained farmland to a ploughing depth of 10-20 cm.
Fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent is prepared from the following raw materials in parts by weight: 7 parts of hydroxyapatite, 7 parts of monocalcium phosphate, 22 parts of sepiolite, 17 parts of straw, 0.7 part of bacillus citrate, 2.7 parts of penicillium oxalicum and 0.6 part of klebsiella pneumoniae, wherein the using amount of the soil treatment agent is 160g per square meter.
(2) Water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, enabling the farmland water to flow into an artificial treatment pond through the water channel, planting aquatic plants in the water channel, wherein the planting quantity ratio of yellow flag, ciliate desert grass, bitter grass and aquatic canna is 2:1:3:1, the planting density is 8000 g/square meter, and kaolin, calcite, montmorillonite and vesuvianite with the mass ratio of 2:1:3:5 are sequentially paved in the artificial treatment pond from bottom to top, and the paving thickness is 60 cm.
And a third stage: sprinkling a microbial preparation on farmland sewage flowing into an artificial treatment pond, wherein the microbial preparation consists of sphingolipid bacillus, flavobacterium brucellosis, proteus morganii and actinoplanes in a mass ratio of 1.5:1:3:0.2, and the adding amount is 40g/m3And standing for 2.5 hours to prepare the treated farmland water.
Comparative example 1
On the basis of water body treatment in the embodiment 1, the planting proportion of the yellow flag, the ciliate desert-grass, the tape grass and the aquatic canna is adjusted, and the method specifically comprises the following steps: the planting quantity ratio of the yellow flag, the ciliate desert-grass, the tape grass and the aquatic canna is 1:1:1: 1.
Comparative example 2
On the basis of water body treatment in the embodiment 1, the mass ratio and the laying sequence of the kaolin, the calcite, the montmorillonite and the volcanic rock are adjusted, and the method specifically comprises the following steps: montmorillonite, volcanic rock, kaolin and calcite in a mass ratio of 1:1:1:1 are sequentially paved on the artificial treatment pond from bottom to top.
Comparative example 3
On the basis of water body treatment in the embodiment 1, the types of the microbial preparations are adjusted, and the method specifically comprises the following steps: the microbial preparation is prepared from the following components in a mass ratio of 2:0.8: 2.5:0.5 of Acidithiobacillus caldus, Flavobacterium omnivorum, Proteus morganii and Actinoplanes.
Comparative example 4
On the basis of the soil remediation of the embodiment 1, the raw material ratio of the soil treatment agent is adjusted, and the method specifically comprises the following steps: the soil treatment agent comprises the following raw materials in parts by weight: 12 parts of hydroxyapatite, 5 parts of monocalcium phosphate, 18 parts of sepiolite, 20 parts of straw, 2 parts of bacillus citrate, 2 parts of penicillium oxalicum and 2 parts of klebsiella pneumoniae.
Comparative example 5
On the basis of the soil remediation of the embodiment 1, the raw materials of the soil treatment agent are adjusted, specifically: 8 parts of hydroxyapatite, 9 parts of monopotassium phosphate, 23 parts of bentonite, 15 parts of straw, 1 part of citric acid bacillus, 2 parts of penicillium oxalicum and 0.5 part of klebsiella pneumoniae.
Test example 1
The water use in the farmland was examined by the water treatment methods of examples 1 to 5 and comparative examples 1 to 3, and the test site was the southern Lu farm in Tunchang county, Hainan province. And detecting the removal rate of Chemical Oxygen Demand (COD), ammonia nitrogen and Total Phosphorus (TP) in the treated farmland water. The detection and analysis method refers to the Water and wastewater monitoring and analysis method (fourth edition) issued by the State environmental protection administration.
The removal rate is the initial mass concentration of the farmland water pollutants (COD, ammonia nitrogen and TP), the mass concentration of the farmland water pollutants (COD, ammonia nitrogen and TP) after treatment, the initial mass concentration of the farmland water pollutants (COD, ammonia nitrogen and TP) is multiplied by 100 percent
| Name (R) | COD(％) | Ammonia nitrogen (%) | TP(％) |
| Example 1 | 98.31 | 99.06 | 98.96 |
| Example 2 | 97.66 | 98.41 | 98.55 |
| Example 3 | 97.52 | 98.62 | 97.89 |
| Example 4 | 98.03 | 99.12 | 97.63 |
| Example 5 | 96.34 | 97.89 | 98.88 |
| Comparative example 1 | 90.36 | 91.31 | 95.12 |
| Comparative example 2 | 92.61 | 88.35 | 92.91 |
| Comparative example 3 | 88.31 | 93.61 | 90.31 |
Experimental results show that the farmland water treatment method provided by the invention effectively reduces COD (chemical oxygen demand), ammonia nitrogen and TP (total phosphorus) contents, and solves the problem of ecological pollution from farmland water. Comparative example 1 the planting ratio of the aquatic plants was adjusted, and the species, planting ratio and planting density of the aquatic plants were selected and planted in accordance with various factors such as geographical climate, environment, soil property and water quality of Hainan province. Factors such as photosynthesis of the aquatic plants, root secretion, plant absorption and the like influence the effect of removing nitrogen and phosphorus in the farmland water by the aquatic plants, the comparative example 1 changes the planting proportion of the aquatic plants, so that the photosynthesis effect is poor, the distribution of nutrient absorption sources required by the growth of the plants is uneven, the four aquatic plants generate antagonism, and the treatment effect of the farmland water is further influenced.
Comparative example 2 adjusting the mass ratio and the laying order of kaolin, calcite, montmorillonite and volcanic rock resulted in a reduction in the remediation effect due to the different materials having different surface areas, porosities and constituent elements. The kaolin, calcite, montmorillonite and volcanic rock paved in the invention not only have adsorption effect, but also increase the oxygen content in the water body, promote the reaction rate of the microbial preparation in the water and shorten the treatment time. And (3) adjusting the types of the microbial preparations, wherein the reaction effects of different microbes on the water body are obviously different, and the types and the proportions of the microbes selected in the invention are combined with the factors such as water quality, aquatic plants, artificial pond laying and the like. The invention uses less microbial preparation, achieves good treatment effect and shortens treatment time.
Test example 2
The soil treatment methods of examples 1 to 5 and comparative examples 4 to 5 were used for testing, and the pH value of the treated soil and the contents of lead and copper were measured, and the pH value of the soil was measured by a potential method with reference to GB 15618-2018.
| Name (R) | pH | Lead (mg/kg) | Copper (mg/kg) |
| Example 1 | 6.5 | 33.6 | 50.6 |
| Example 2 | 6.7 | 35.1 | 53.4 |
| Example 3 | 6.3 | 34.2 | 52.6 |
| Example 4 | 6.8 | 32.8 | 55.0 |
| Example 5 | 6.4 | 36.9 | 56.4 |
| Comparative example 4 | 5.9 | 58.4 | 79.1 |
| Comparative example 5 | 6.2 | 52.3 | 75.3 |
Experimental results show that the soil remediation method can effectively adjust the pH value of the soil and reduce the content of lead and copper in the soil. The raw materials of the soil treatment agent are respectively adjusted in dosage and composition to reduce the remediation effect, the proportion and selection of the raw materials can play a synergistic role through compounding, the reasonable addition of microorganisms improves the analysis rate of heavy metals in soil, other raw materials are facilitated to carry out heavy metal precipitation and adsorption, and the purpose of restoring farmland ecology is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A treatment method for ecological restoration of farmland water pollution is characterized by comprising the following steps:
(1) soil remediation
Draining: discharging the water in the farmland into a pond A;
ploughing: ploughing the drained farmland to a ploughing depth of 10-20 cm;
fertilizing: putting a soil treatment agent into a farmland, wherein the soil treatment agent comprises the following raw materials in parts by weight: 5-10 parts of hydroxyapatite, 7-11 parts of monocalcium phosphate, 20-25 parts of sepiolite, 12-17 parts of straw, 0.5-1.5 parts of citric acid bacillus, 1-3 parts of penicillium oxalicum and 0.1-0.8 part of klebsiella pneumoniae;
(2) water body treatment
The first stage is as follows: filtering the farmland water in the pond A by using a filter screen to obtain farmland water with solid pollutants removed;
and a second stage: discharging farmland water from which solid pollutants are removed into a water channel, and allowing the farmland water to flow into an artificial treatment pond through the water channel;
and a third stage: sprinkling the microbial preparation on the farmland water flowing into the artificial treatment pond, and standing for 2-3h to obtain the treated farmland water.
2. The method for remedying the ecological remediation of the water pollution of the farmland water body according to claim 1, wherein in the step (2), the ditch is planted with aquatic plants, and the aquatic plants consist of acorus calamus, ciliate desert-grass, tape grass and aquatic canna.
3. The method for treating the ecological restoration of the water pollution of the farmland water body as claimed in claim 2, wherein the planting quantity ratio of the yellow flag, the ciliate desert-grass, the bitter grass and the canna aquatica is 2:1:3:1, and the planting density of the aquatic plants is 8000 g/square meter of 6000-.
4. The method for treating the ecological restoration of the water pollution of the farmland water body as claimed in claim 1, wherein in the step (2), kaolin, calcite, montmorillonite and vesuvianite are laid on the bottom of the artificial treatment pond from bottom to top in sequence.
5. The method for treating the ecological restoration of the water pollution of the farmland water body as claimed in claim 4, wherein the mass ratio of the kaolin, the calcite, the montmorillonite and the volcanic rock is 2:1:3:5, and the paving thickness is 50-60 cm.
6. The treatment method for the ecological restoration of the water pollution of the farmland water body as claimed in claim 1, wherein in the step (2), the microbial preparation is prepared by mixing the following components in a mass ratio of 1.5-2.5:0.5-1: 2-3: 0.2-0.8 of sphingolipid bacillus, flavobacterium brucellosis, proteus morganii and actinoplanes.
7. The method for treating the ecological restoration of the water pollution of the farmland water body as claimed in claim 6, wherein the adding amount of the microbial preparation is 30-50g/m3。
8. The method for treating ecological restoration of water pollution of farmland water bodies according to claim 1, wherein in the step (1), the application amount of the soil treatment agent is 100-.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111166852.4A CN113800721B (en) | 2021-09-30 | 2021-09-30 | Treatment method for ecological restoration of water pollution of farmland water body |
| PCT/CN2021/143536 WO2023050630A1 (en) | 2021-09-30 | 2021-12-31 | Treatment method for ecological restoration of water pollution in farmland water |
Applications Claiming Priority (1)
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| WO2023050630A1 (en) * | 2021-09-30 | 2023-04-06 | 海南大学 | Treatment method for ecological restoration of water pollution in farmland water |
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| WO2012160526A2 (en) * | 2011-05-23 | 2012-11-29 | Ofir Menashe | Formulations of microorganism comprising particles and uses of same |
| CN104259192A (en) * | 2014-09-24 | 2015-01-07 | 长江水利委员会长江科学院 | Ecological water conservancy restoration system and method for heavy metal polluted farmland soil |
| CN105016873A (en) * | 2015-07-15 | 2015-11-04 | 中国科学院地理科学与资源研究所 | Compound mixed biological bacterial fertilizer for restoring cadmium contaminated soil and preparation method and application thereof |
| CN109082393A (en) * | 2018-08-15 | 2018-12-25 | 南宁市黄陈生猪养殖场 | One kind can be used for Treating Municipal Sewage microbial bacterial agent and preparation method thereof |
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| EP3053664A4 (en) * | 2013-09-30 | 2017-06-28 | Sun Yat-Sen University | Soil smoldering method for remediation of heavy metal co-contaminated soil |
| CN108752138A (en) * | 2018-07-25 | 2018-11-06 | 美丽国土（北京）生态环境工程技术研究院有限公司 | The complex repairation agent administered for heavy metals in farmland cadmium pollution and restorative procedure and application |
| AU2020103286A4 (en) * | 2020-11-06 | 2021-01-14 | Sichuan Agricultural University | Combined passivator for reducing cadmium content in paddy field soil and its application method |
| CN113800721B (en) * | 2021-09-30 | 2022-08-23 | 海南大学 | Treatment method for ecological restoration of water pollution of farmland water body |
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| WO2012160526A2 (en) * | 2011-05-23 | 2012-11-29 | Ofir Menashe | Formulations of microorganism comprising particles and uses of same |
| CN104259192A (en) * | 2014-09-24 | 2015-01-07 | 长江水利委员会长江科学院 | Ecological water conservancy restoration system and method for heavy metal polluted farmland soil |
| CN105016873A (en) * | 2015-07-15 | 2015-11-04 | 中国科学院地理科学与资源研究所 | Compound mixed biological bacterial fertilizer for restoring cadmium contaminated soil and preparation method and application thereof |
| CN109082393A (en) * | 2018-08-15 | 2018-12-25 | 南宁市黄陈生猪养殖场 | One kind can be used for Treating Municipal Sewage microbial bacterial agent and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023050630A1 (en) * | 2021-09-30 | 2023-04-06 | 海南大学 | Treatment method for ecological restoration of water pollution in farmland water |
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