CN115246700A - Pollutant release inhibitor for water body sediment treatment and water body sediment treatment method - Google Patents
Pollutant release inhibitor for water body sediment treatment and water body sediment treatment method Download PDFInfo
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- CN115246700A CN115246700A CN202110468529.6A CN202110468529A CN115246700A CN 115246700 A CN115246700 A CN 115246700A CN 202110468529 A CN202110468529 A CN 202110468529A CN 115246700 A CN115246700 A CN 115246700A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000003344 environmental pollutant Substances 0.000 title claims abstract description 48
- 231100000719 pollutant Toxicity 0.000 title claims abstract description 48
- 239000003112 inhibitor Substances 0.000 title claims abstract description 41
- 239000013049 sediment Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 29
- 229910010272 inorganic material Inorganic materials 0.000 claims abstract description 20
- 239000011147 inorganic material Substances 0.000 claims abstract description 20
- 239000011368 organic material Substances 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 9
- 239000002028 Biomass Substances 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 7
- 229960000892 attapulgite Drugs 0.000 claims abstract description 7
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 7
- 239000010457 zeolite Substances 0.000 claims abstract description 7
- 208000005156 Dehydration Diseases 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 10
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 claims description 5
- 239000010902 straw Substances 0.000 claims description 5
- 239000004566 building material Substances 0.000 claims description 3
- 239000010921 garden waste Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002910 solid waste Substances 0.000 abstract description 2
- 230000000415 inactivating effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000011065 in-situ storage Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000002352 surface water Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the field of comprehensive utilization of solid wastes, and particularly relates to a pollutant release inhibitor for treating water body bottom mud and a treatment method of the water body bottom mud. The pollutant release inhibitor consists of organic material and inorganic material in the mass ratio of (1-3) to (7-9); the organic material is selected from biomass carbon, and the inorganic material consists of attapulgite, diatomite and zeolite according to a mass ratio of 1. The pollutant release inhibitor for treating the water body sediment is prepared by using organic and inorganic materials, has the effects of adsorbing, fixing, passivating, inactivating and the like on pollutants in the sediment, prevents the pollutants in the sludge from entering the environment again, and lays a foundation for the comprehensive utilization of the black and odorous water body sediment.
Description
Technical Field
The invention belongs to the field of comprehensive utilization of solid wastes, and particularly relates to a pollutant release inhibitor for treating water body bottom mud and a treatment method of the water body bottom mud.
Background
After the pollutants received by the natural surface water body exceed the self-cleaning capacity, a serious black and odorous phenomenon can occur. The black and odorous water body bottom mud is not only an important accommodation and accumulation reservoir for the pollutants entering the surface water body, but also an endogenous source of the water pollution on the surface water body. Especially, when exogenous pollution is effectively controlled or completely intercepted, the bottom mud can become an important source of water pollutants on the surface water body. Therefore, the reasonable treatment and disposal of the bottom mud in the black and odorous water body treatment have important practical significance.
The pollution bottom mud treatment technology mainly comprises two types: namely in-situ repair technology and ex-situ repair technology. The in-situ remediation technology refers to a method for remedying the polluted bottom mud by taking measures in situ. However, the in-situ remediation technology does not fundamentally eliminate pollutants, so that once the external conditions change, the black and odorous phenomenon occurs again in the water body. The allopatric repair technology mainly refers to the treatment of dredging of bottom mud and the treatment of dredging of the bottom mud. The method is the best method for treating the black and odorous water body just because the technology thoroughly removes the pollutants from the water body and keeps away from the water. However, during ex-situ treatment and application of the substrate sludge, there is a risk that the pollutants are released again and pollute the environment.
Disclosure of Invention
The invention aims to provide a pollutant release inhibitor for treating water body bottom mud, which can prevent pollutants in the mud from entering the environment again.
The second purpose of the invention is to provide a method for treating the sediment of the water body.
In order to achieve the purpose, the technical scheme of the pollutant release inhibitor for treating the water body bottom mud is as follows:
a pollutant release inhibitor for treating water body bottom mud consists of organic materials and inorganic materials according to the mass ratio of (1-3) to (7-9); the organic material is selected from biomass carbon, and the inorganic material is composed of attapulgite, diatomite and zeolite according to a mass ratio of 1-10.
The pollutant release inhibitor for treating the water body bottom sediment is prepared by using organic and inorganic materials, prevents organic pollutants, nitrogen and phosphorus inorganic pollutants and the like in the bottom sediment from entering the environment again through the adsorption and fixation and other actions, passivates and inactivates heavy metal pollutants in the sludge through the adsorption and fixation and other actions, and lays a foundation for comprehensive utilization of the black and odorous water body bottom sediment.
Preferably, the raw material for producing the biomass carbon is crop straws and/or garden waste. The biomass carbon is prepared by utilizing crop straws, garden wastes and the like under the condition of high temperature and oxygen deficiency, and has wide raw material source, low price and regeneration. The inorganic material belongs to non-metal minerals, and has large storage capacity, multiple types and low price in China. The overall cost of the pollutant release inhibitor is low, so that the treatment cost of a large amount of water body bottom mud is reduced.
In order to further optimize the treatment efficiency, it is preferable that the organic material and the inorganic material are in the form of powder having a particle size of 80 mesh or more.
The technical scheme of the treatment method of the water body bottom mud is as follows:
a method for treating bottom mud of a water body comprises the following steps: treating the clear water body bottom mud by using a pollutant release inhibitor; the pollutant release inhibitor consists of an organic material and an inorganic material according to a mass ratio of (1-3) to (7-9); the organic material is selected from biomass carbon, and the inorganic material is composed of attapulgite, diatomite and zeolite according to a mass ratio of 1-10.
The invention relates to a method for treating water body bottom mud, which belongs to a method for restoring polluted bottom mud in different places, has better release-resisting capability on pollutants in the bottom mud, and is also beneficial to reducing odor emission of the bottom mud.
Preferably, the bottom sludge of the clear water body is dehydrated, and the pollutant release inhibitor is added in the dehydration process. In the process, the addition of the pollutant release inhibitor is not only beneficial to fixing the pollutants in the sludge, but also beneficial to reducing the viscosity of the sludge and dewatering the bottom sludge.
Preferably, the weight of the pollutant release inhibitor is 1-2% of the weight of the water body bottom mud, the dosage is small, and the cost is low.
Preferably, the dehydration treatment is performed by a belt sludge dehydrator. Preferably, the water content of the dewatered bottom mud is 70 to 80%. When the black and odorous water body bottom mud is removed, the black and odorous water body bottom mud is added according to the production amount of the bottom mud, and then the black and odorous water body is dehydrated according to a normal dehydration method (such as belt type dehydration), and operations such as additional stirring and the like are not needed.
The dewatered bottom mud has low water content, no odor, no secondary pollution and other environmental risks, and can be safely used for ecological engineering, hydraulic engineering, urban garden construction and the like.
Preferably, the dewatered bottom mud is used as foundation soil for ecological engineering construction. Ecological engineering construction such as mountain restoration, river course revetment and embankment, urban garden construction and the like.
Preferably, the dewatered sludge is used to produce building materials. Building materials such as baking-free bricks, environmental ceramsite and the like.
Drawings
FIG. 1 is the change of the total nitrogen content (mg/L) of overlying water after treatment with the pollutant release inhibitor of example 1;
FIG. 2 is the change of ammonia nitrogen content (mg/L) in overlying water after treatment with the pollutant release inhibitor of example 1;
FIG. 3 is the change in COD (mg/L) of overburden water after treatment with the contaminant release inhibitor of example 1;
FIG. 4 is a graph of the change in total P (mg/L) in overlying water bodies after treatment with the contaminant release inhibitor of example 1.
Detailed Description
The following examples are provided to further illustrate the practice of the invention.
1. Specific embodiment of the method for treating water body bottom mud
Example 1
In the method for treating the water body sediment, a black and odorous river channel in a certain market is selected, sediment with the thickness of about 30-40cm is removed by a silt remover, a pollutant release inhibitor is added according to 2% of the weight of the produced sediment, a belt type sludge dehydrator is used for dehydration while the release inhibitor is added, the water content of the dehydrated sediment is about 75%, and the dehydrated sediment is odorless and rich in organic matters and clay particles.
The pollutant release inhibitor of the embodiment is prepared from an organic material and an inorganic material according to a mass ratio of 1: 9.
The organic material is biological carbon made of crop straws. Can be produced by crop straws at 500-600 ℃ under the anoxic condition, and is sieved by a 80-mesh sieve for later use after being crushed. The inorganic material is prepared from attapulgite, diatomite and zeolite according to the weight ratio of 1:1: 1. Pulverizing natural ore materials such as attapulgite, diatomite, zeolite, etc., respectively, and sieving with 80 mesh sieve. Mixing organic material and inorganic material at a certain proportion, mixing, and packaging.
Example 2
The method for treating the water body bottom mud is different from the method in the embodiment 1 in that: the pollutant release inhibitor consists of an organic material and an inorganic material according to a mass ratio of 2.
Example 3
The method for treating the water body bottom mud is different from the method in the embodiment 1 in that: the pollutant release inhibitor consists of an organic material and an inorganic material according to a mass ratio of 3.
2. Specific examples of the pollutant release inhibitor for treating the water body sediment respectively correspond to the pollutant release inhibitors related in examples 1 to 3, and detailed description is omitted.
3. Examples of the experiments
Experimental example 1
Taking example 1 as an example, after the dewatered bottom mud is properly air-dried (moisture is about 40%), 100 g of bottom mud added with the release inhibitor are respectively weighed in a beaker, and the solid-to-liquid ratio is as follows: 10, slowly adding corresponding river water into the river channel, slowly stirring the mixture, and standing the mixture to form two layers of supernatant and bottom mud for later use. Meanwhile, the air-dried sludge without the release inhibitor is used as a reference and cultured under the dark condition of 20 ℃. And water samples and bottom sludge are periodically taken during the culture period to carry out the determination of corresponding indexes.
The river water and sediment indexes used in the test are shown in table 1. The test results are shown in fig. 1, fig. 2, fig. 3 and fig. 4, respectively, as total nitrogen (mg/L) in the overlying water body, ammonia nitrogen (mg/L) in the overlying water body, COD (mg/L) in the overlying water body, total P (mg/L) in the overlying water body, and the like. Heavy metals in overlying water were not detected and are not listed.
TABLE 1 physicochemical indices of river water and bottom mud used in the test
It can be seen from table 1 and fig. 1-4 that the indexes of various pollutants in the overlying water body are lower than those of the control after the pollutant release inhibitor is added into the bottom mud. Despite the high As and Hg content of the used substrate sludge, the surge did not exceed the standard for contaminant control in agricultural sludges (GB 4284-84). As and Hg were measured in the supernatants at each sampling period during the test period and were not measured in the control and treatment. In conclusion, the results show that the application effect of the pollutant release inhibitor in the black and odorous water body bottom mud is very obvious.
Experimental example 2
In this experimental example, the treatment of the bottom sediment of the water body is different from the treatment of the above examples 1, 2 and 3 in that: when the bottom mud is cleared from the river channel, the pollutant release inhibitor is not added, but the bottom mud is directly sent to a belt type sludge dewatering machine for dewatering.
The moisture content of the dehydrated substrate sludge without the addition of the pollutant release inhibitor is determined to be 80-85 percent higher than 5-10 hundred points of the moisture content of the sludge in the examples 1, 2 and 3, and the substrate sludge has obvious odor. Therefore, the addition of the pollutant release inhibitor has obvious effects on dehydration of the bottom mud, elimination of odor and the like.
Claims (10)
1. A pollutant release inhibitor for treating water body bottom mud is characterized by comprising organic materials and inorganic materials according to the mass ratio of (1-3) to (7-9); the organic material is selected from biomass carbon, and the inorganic material is composed of attapulgite, diatomite and zeolite according to a mass ratio of 1-10.
2. The pollutant release inhibitor for treating the water body bottom sediment, according to claim 1, is characterized in that the production raw material of the biomass carbon is crop straws and/or garden waste.
3. The pollutant release inhibitor for treating the water body bottom mud as claimed in claim 1 or 2, wherein the organic material and the inorganic material are in powder form, and the granularity is more than 80 meshes.
4. The method for treating the bottom mud of the water body is characterized by comprising the following steps of: treating the clear water body bottom mud by using a pollutant release inhibitor; the pollutant release inhibitor consists of organic materials and inorganic materials according to the mass ratio of (1-3) to (7-9); the organic material is selected from biomass carbon, and the inorganic material is composed of attapulgite, diatomite and zeolite according to a mass ratio of 1-10.
5. The method for treating the water body bottom sediment as claimed in claim 4, wherein the clear water body bottom sediment is subjected to dehydration treatment, and the pollutant release inhibitor is added in the dehydration treatment process.
6. The method for treating the sediment of the water body as claimed in claim 5, wherein the added weight of the pollutant release inhibitor is 1-2% of the weight of the sediment of the water body.
7. The method for treating the bottom sludge of the water body as claimed in claim 5 or 6, wherein the dewatering treatment is performed by a belt sludge dewatering machine.
8. The method for treating the sediment of the water body of claim 7, wherein the water content of the sediment after the dehydration treatment is 70 to 80%.
9. The method for treating sediment in water according to claim 5 or 6, wherein the sediment after the dehydration treatment is used as a foundation soil for the construction of ecological engineering.
10. A method for treating sediment in water bodies according to claim 5 or 6, wherein the sediment after the dewatering treatment is used for producing building materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110468529.6A CN115246700A (en) | 2021-04-28 | 2021-04-28 | Pollutant release inhibitor for water body sediment treatment and water body sediment treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110468529.6A CN115246700A (en) | 2021-04-28 | 2021-04-28 | Pollutant release inhibitor for water body sediment treatment and water body sediment treatment method |
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| CN115246700A true CN115246700A (en) | 2022-10-28 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4012982A1 (en) * | 1990-04-24 | 1991-10-31 | Ftu Gmbh | Removing harmful (in)organic substance from gases - by addn. of finely divided substance with active surface and filtration |
| CN105567247A (en) * | 2016-02-04 | 2016-05-11 | 周益辉 | Heavy metal-contaminated soil remediation agent and preparation method thereof |
| CN111362535A (en) * | 2020-03-12 | 2020-07-03 | 中交三航(重庆)生态修复研究院有限公司 | Method for in-situ treatment of polluted bottom mud and covering material |
-
2021
- 2021-04-28 CN CN202110468529.6A patent/CN115246700A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4012982A1 (en) * | 1990-04-24 | 1991-10-31 | Ftu Gmbh | Removing harmful (in)organic substance from gases - by addn. of finely divided substance with active surface and filtration |
| CN105567247A (en) * | 2016-02-04 | 2016-05-11 | 周益辉 | Heavy metal-contaminated soil remediation agent and preparation method thereof |
| CN111362535A (en) * | 2020-03-12 | 2020-07-03 | 中交三航(重庆)生态修复研究院有限公司 | Method for in-situ treatment of polluted bottom mud and covering material |
Non-Patent Citations (3)
| Title |
|---|
| 杨治广等: "固体废物处理与处置", 30 September 2020, ，冶金工业出版社, pages: 123 * |
| 田启国等: "重金属污染底泥稳定化修复药剂研究进展", 江西农业学报, vol. 32, no. 8, pages 98 * |
| 董颖博等: "环境矿物材料", ，冶金工业出版社, pages: 123 * |
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