CN112209587A - Bottom mud repairing agent for treating black and odorous water body and preparation method thereof - Google Patents
Bottom mud repairing agent for treating black and odorous water body and preparation method thereof Download PDFInfo
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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
- C02F11/02—Biological treatment
-
- 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
Abstract
The invention relates to the technical field of bottom sediment remediation, in particular to a bottom sediment remediation agent for treating black and odorous water and a preparation method thereof, wherein the bottom sediment remediation agent comprises, by weight, 10-20% of water, 5-10% of saccharides, 40-55% of zeolite particles, 10-20% of a composite microbial preparation and 20-30% of activated carbon particles; by adopting the invention, the carbon source and the nitrogen source required by proliferation are provided for the active microorganism through the decomposition of the carbohydrate organic matter, so that the activity of the microorganism is improved; heavy metals in the bottom mud and the water body are adsorbed and condensed by the activated carbon particles, so that the content of the heavy metals is reduced; heavy metal pollutants in the bottom mud are adsorbed and passivated through physical characteristics of large specific surface area, looseness, porosity and the like of zeolite particles, and meanwhile, the zeolite particles serve as composite microorganism carriers to fix microorganisms, so that the action of the microorganisms is further enhanced.
Description
Technical Field
The invention relates to the technical field of sediment remediation, in particular to a sediment remediation agent for treating black and odorous water and a preparation method thereof.
Background
With the acceleration of industrialization process, population rapidly grows, natural environment rapidly worsens, and natural water body also inevitably receives the pollution. A great deal of pollutants, such as nitrogen and phosphorus nutritive salts, heavy metals, benzene series, Polycyclic Aromatic Hydrocarbons (PAHs), phthalate esters (PAEs) and other refractory organic matters exist in sediment of water bodies such as rivers, lakes, reservoirs and the like. Therefore, the bottom mud is an important component of the natural water body, and the importance of bottom mud restoration is self-evident, and the restoration effect is closely related to the water quality improvement of the natural water body.
The current bottom sediment remediation and treatment technology mainly comprises an exogenous prevention and control technology and an endogenous treatment technology. Along with the establishment of national environmental protection policies and the development of related exogenous prevention and control technologies, the discharge of exogenous pollutants is basically avoided. Thus, endogenous abatement technology is beginning to become an active research focus. According to the implementation mode of the treatment technology, the endogenous treatment technology is divided into physical repair, chemical repair and biological repair; physical repair is divided into an ectopic physical repair technology and an in-situ physical repair technology by taking space and time as boundaries. Wherein, the physical repair has the most obvious effect, and can quickly and effectively solve the problem of bottom mud pollution; chemical remediation is limited by the disturbance of wind waves and benthos, affects the effect of passivation treatment, but is still widely applied as a relatively mature technology; bioremediation also faces various limitations, and the expected effect is difficult to achieve due to the influence of the sediment environment and the original microorganisms.
In conclusion, how to research a composite repair technology can bring the advantages of various repair technologies into play, thereby achieving a more efficient and thorough repair effect, and becoming a focus of attention of researchers.
Disclosure of Invention
Aiming at the defects of the existing sediment remediation technology, the invention provides a sediment remediation agent for treating black and odorous water and a preparation method thereof, which can combine three remediation technologies of physical remediation, chemical remediation and biological remediation, and can realize a more efficient and thorough remediation effect on the removal of the river sediment pollutants.
In order to achieve the purpose, the invention provides the following technical scheme:
the bottom mud repairing agent for treating black and odorous water comprises, by weight, 10-20% of water, 5-10% of saccharides, 40-55% of zeolite particles, 10-20% of a composite microbial preparation and 20-30% of activated carbon particles.
Further, the saccharides include glucose, sucrose and starch.
Furthermore, the particle size of the zeolite particles is 3-5 mm.
Furthermore, the compound microbial preparation is prepared by mixing multiple bacteria liquids of nitrosomonas, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas and pseudomonas, wherein the mass ratio of the nitrosomonas, the nitrobacillus, the bacillus, the alcaligenes, the acinetobacter, the xanthomonas and the pseudomonas is 20:25:15:10:5:15: 10.
Furthermore, the activated carbon particles comprise sawdust activated carbon, shell activated carbon, coconut shell activated carbon, biomass activated carbon and other activated carbon, and the particle size of the activated carbon is controlled to be 3-5 mm through grinding and screening.
A preparation method of a bottom mud repairing agent for treating black and odorous water is characterized by comprising the following steps:
s1, adding saccharides accounting for 5-10% of the total weight into water accounting for 5-10% of the total weight, and stirring and dissolving to obtain a sugar solution;
s2, adding a compound microbial preparation with the total weight of 10-20% into the sugar solution in the S1, culturing and fermenting to obtain a mixed solution A after bacterial colonies are formed; .
S3, adding 40-55% of zeolite particles and 20-30% of activated carbon particles by weight into the mixed solution A in the S2, adding 5-10% of water by weight, stirring uniformly, slightly drying, and obtaining mixed solution B after the water content is reduced to a wet state;
and S4, stirring the mixed solution B by a low-speed stirrer at the rotating speed of 15r/min to ensure that each component is in a homogeneous state, thereby obtaining the bottom mud repairing agent.
Further, the complex microbial preparation is prepared by the following steps:
s21, respectively culturing nitrosomonas, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas and pseudomonas to enable the number of viable bacteria to be more than 1 × 109CUF/mL, cooling and drying to obtain seed bacteria powder of each strain;
s22, uniformly mixing the seed bacteria powder according to the mass ratio of nitrosomonas bacterium, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas bacterium and pseudomonas as 20:25:15:10:5:15:10 to obtain the compound microbial preparation.
Further, the adding amount of the bottom mud repairing agent accounts for 5-10% of the mass of the bottom mud in the water body, the agent is added, the agent and the bottom mud in the river are fully mixed through a cultivator, and the reaction is carried out in an anaerobic environment.
The invention has the beneficial effects that:
compared with the prior art, the invention provides a bottom mud repairing agent for treating black and odorous water, which has the following beneficial effects:
the substrate sludge repairing agent for treating the black and odorous water body is prepared by dissolving saccharides with a small amount of water, pouring a compound microbial preparation into a container, and culturing and fermenting for a certain time; adding zeolite particles and activated carbon particles after bacterial colonies form a certain scale, adding a small amount of water, uniformly stirring, slightly drying, and making the components in a homogeneous state by a low-speed stirrer after the moisture is reduced to a wet state to obtain the bottom sediment repairing agent.
The bottom sediment repairing agent can efficiently repair the bottom sediment of the black and odorous water body, and the content of water quality pollutants such as total nitrogen, total phosphorus, ammonia nitrogen and the like is reduced by absorbing and decomposing nitrogen and phosphorus nutritive salts, benzene series, Polycyclic Aromatic Hydrocarbons (PAHs), phthalate esters (PAEs) and other refractory organic matters in the bottom sediment through active microorganisms in the composite microbial preparation; the carbon source and the nitrogen source required by proliferation are provided for the active microorganisms through the decomposition of the carbohydrate organic matters, so that the activity of the microorganisms is improved; heavy metals in the bottom mud and the water body are adsorbed and condensed by the activated carbon particles, so that the content of the heavy metals is reduced; heavy metal pollutants in the bottom mud are adsorbed and passivated through physical characteristics of large specific surface area, looseness, porosity and the like of zeolite particles, and meanwhile, the zeolite particles serve as composite microorganism carriers to fix microorganisms, so that the action of the microorganisms is further enhanced.
Drawings
FIG. 1 is a schematic diagram of the preparation process of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example 1:
firstly, dissolving glucose with the total weight of 5 percent by using water with the total weight of 5 percent, and slightly stirring to dissolve the glucose; then pouring the microbial compound preparation accounting for 20 percent of the total weight into a container, and culturing and fermenting for a certain time; after bacterial colony forms a certain scale, adding zeolite particles accounting for 35 percent of the total weight and coconut shell powder activated carbon particles accounting for 30 percent of the total weight, adding water accounting for 5 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after water is reduced to a wet state to enable all components to be in a homogeneous state, thereby obtaining the bottom mud repairing agent.
The agent is added according to 10% of the mass fraction of the bottom mud of the water body, the bottom mud repairing agent and the bottom mud of the river are fully mixed through a cultivator, the reaction is carried out in an anaerobic environment for 24 hours, and then the performance index of the bottom mud in the embodiment is tested.
Example 2:
firstly, dissolving sucrose with the total weight of 10 percent by using water with the total weight of 5 percent, and slightly stirring to dissolve the sucrose; then pouring the microbial compound preparation accounting for 20 percent of the total weight into a container, and culturing and fermenting for a certain time; after bacterial colony forms a certain scale, adding zeolite particles accounting for 40 percent of the total weight and bamboo fiber activated carbon particles accounting for 20 percent of the total weight, adding water accounting for 5 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after the water content is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the substrate sludge repairing agent.
The method comprises the steps of adding the medicament according to 8% of the mass fraction of the bottom mud of the water body, fully mixing the medicament with the bottom mud of the river channel through a cultivator, carrying out reaction in an anaerobic environment for 24 hours, and then testing the performance index of the bottom mud in the embodiment.
Example 3:
firstly, dissolving starch with the total weight of 5 percent by using water with the total weight of 10 percent, and slightly stirring for dissolving; then pouring the microbial compound preparation accounting for 10 percent of the total weight into a container, and culturing and fermenting for a certain time; after bacterial colony forms a certain scale, adding zeolite particles accounting for 40 percent of the total weight and biomass activated carbon particles accounting for 25 percent of the total weight, adding water accounting for 10 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after the moisture is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the substrate sludge repairing agent.
The medicament is added according to 6% of the mass fraction of the bottom mud of the water body, the medicament and the bottom mud of the river are fully mixed through a ploughing machine, the reaction is carried out in an anaerobic environment for 24 hours, and then the performance index of the bottom mud in the embodiment is tested.
Example 4:
firstly, dissolving glucose with the total weight of 5 percent by using water with the total weight of 5 percent, and slightly stirring to dissolve the glucose; then pouring the microbial compound preparation accounting for 10 percent of the total weight into a container, and culturing and fermenting for a certain time; after bacterial colony forms a certain scale, adding zeolite particles accounting for 55 percent of the total weight and wood activated carbon particles accounting for 20 percent of the total weight, adding water accounting for 5 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after the moisture is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the substrate sludge repairing agent.
The medicament is added according to 5% of the mass fraction of the bottom mud of the water body, the medicament and the bottom mud of the river are fully mixed through a ploughing machine, the reaction is carried out in an anaerobic environment for 24 hours, and then the performance index of the bottom mud in the embodiment is tested.
Example 5:
firstly, dissolving sucrose with the total weight of 5 percent by using water with the total weight of 5 percent, and slightly stirring to dissolve the sucrose; then pouring the microbial compound preparation accounting for 15 percent of the total weight into a container, and culturing and fermenting for a certain time; after bacterial colony forms a certain scale, adding zeolite particles accounting for 45 percent of the total weight and wood activated carbon particles accounting for 25 percent of the total weight, adding water accounting for 5 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after the water content is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the substrate sludge repairing agent.
The medicament is added according to 5% of the mass fraction of the bottom mud of the water body, the medicament and the bottom mud of the river are fully mixed through a ploughing machine, the reaction is carried out in an anaerobic environment for 24 hours, and then the performance index of the bottom mud in the embodiment is tested.
Comparative example 1:
firstly, dissolving starch with the total weight of 8 percent by using water with the total weight of 10 percent, and slightly stirring for dissolving; adding water accounting for 10 percent of the total weight into zeolite accounting for 35 percent of the total weight and wood activated carbon accounting for 37 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after the water is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the bottom mud repairing agent.
The medicament is added according to 5% of the mass fraction of the bottom mud of the water body, the medicament and the bottom mud of the river are fully mixed through a ploughing machine, the reaction is carried out in an anaerobic environment for 24 hours, and then the performance index of the bottom mud in the comparative example is tested.
Comparative example 2:
firstly, dissolving the microbial compound preparation with water with the total weight of 5 percent of the total weight, and culturing and fermenting for a certain time after slightly stirring and dissolving; after bacterial colony formation is carried out on a certain scale, adding zeolite accounting for 35 percent of the total weight and coconut shell powder activated carbon accounting for 25 percent of the total weight, adding water accounting for 5 percent of the total weight, uniformly stirring, slightly drying, and stirring at the speed of 15r/min by a low-speed stirrer after water is reduced to a wet state to ensure that all components are in a homogeneous state, thereby obtaining the bottom mud repairing agent.
The method comprises the steps of adding the medicament according to 8% of the mass fraction of the bottom mud of the water body, fully mixing the medicament with the bottom mud of the river channel through a cultivator, carrying out reaction in an anaerobic environment for 24 hours, and then testing the performance index of the bottom mud in the embodiment.
Comparative example 3:
firstly, dissolving glucose with the total weight of 8 percent by using water with the total weight of 10 percent, and slightly stirring for dissolving; then pouring the microbial compound preparation accounting for 32 percent of the total weight into a container, and culturing and fermenting for a certain time; after the bacterial colony forms a certain scale, adding 40 percent of coconut shell powder activated carbon by the total weight, adding 10 percent of water by the total weight, uniformly stirring, slightly drying, and after the moisture is reduced to a wet state, stirring at a speed of 15r/min by a low-speed stirrer to enable all components to be in a homogeneous state, thereby obtaining the bottom mud repairing agent.
The method comprises the steps of adding the medicament according to 10% of the mass fraction of the bottom mud of the water body, fully mixing the medicament with the bottom mud of the river channel through a cultivator, carrying out reaction in an anaerobic environment for 24 hours, and then testing the performance index of the bottom mud in the embodiment.
Sediment performance indexes of each example and comparative example
1000g of the bottom mud repaired in the above examples and comparative examples are uniformly stirred, and the performance index of the bottom mud is tested according to the following specified national standard method.
Measuring Total Phosphorus (TP) of the sediment by using an ammonium molybdate spectrophotometry;
measuring Total Nitrogen (TN) of the bottom sediment by using a semi-micro Kjeldahl method;
the determination of ammonia nitrogen (NH4+ -N) of the bottom sludge is carried out by a KCl leaching-distillation method;
the determination of the heavy metals in the bottom sludge is carried out by a solid waste leaching toxicity leaching method-a horizontal oscillation method.
The results of the evaluation indexes are shown in table 1:
TABLE 1 Performance test results of the bottom sediment repair agent prepared in each example and comparative example
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the described embodiments may be made by those skilled in the art without departing from the scope and spirit of the invention as defined by the accompanying claims.
Claims (8)
1. The bottom mud repairing agent for treating black and odorous water is characterized by comprising, by weight, 10-20% of water, 5-10% of saccharides, 40-55% of zeolite particles, 10-20% of a composite microbial preparation and 20-30% of activated carbon particles.
2. The bottom sediment remediation agent for remediating a black and odorous water body according to claim 1, wherein the sugar comprises glucose, sucrose and starch.
3. The sediment remediation agent for treating black and odorous water according to claim 2, wherein the zeolite particles each have a particle size of 3-5 mm.
4. The bottom sediment repairing agent for treating the black and odorous water body and the preparation method thereof according to claim 1, wherein the compound microbial preparation is prepared by mixing a plurality of bacterial liquids of nitrosomonas bacterium, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas bacterium and pseudomonas, and the mass ratio of the nitrosomonas bacterium, the nitrobacillus, the bacillus, the alcaligenes, the acinetobacter, the xanthomonas bacterium and the pseudomonas is 20:25:15:10:5:15: 10.
5. The sediment restoration agent for treating black and odorous water according to claim 1, wherein the activated carbon particles comprise activated carbon such as wood chip activated carbon, shell activated carbon, coconut shell activated carbon, biomass activated carbon and the like, and the particle size of the activated carbon is controlled to be 3-5 mm by grinding and sieving.
6. A preparation method of a bottom mud repairing agent for treating black and odorous water is characterized by comprising the following steps:
s1, adding saccharides accounting for 5-10% of the total weight into water accounting for 5-10% of the total weight, and stirring and dissolving to obtain a sugar solution;
s2, adding a compound microbial preparation with the total weight of 10-20% into the sugar solution in the S1, culturing and fermenting to obtain a mixed solution A after bacterial colonies are formed; .
S3, adding 40-55% of zeolite particles and 20-30% of activated carbon particles by weight into the mixed solution A in the S2, adding 5-10% of water by weight, stirring uniformly, slightly drying, and obtaining mixed solution B after the water content is reduced to a wet state;
and S4, stirring the mixed solution B by a low-speed stirrer at the rotating speed of 15r/min to ensure that each component is in a homogeneous state, thereby obtaining the bottom mud repairing agent.
7. The method for preparing a sediment remediation agent for remediating black and odorous water according to claim 6, wherein the compound microbial preparation of S2 is prepared by:
s21, respectively culturing nitrosomonas, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas and pseudomonas to enable the number of viable bacteria to be more than 1 × 109CUF/mL, cooling and drying to obtain seed bacteria powder of each strain;
s22, uniformly mixing the seed bacteria powder according to the mass ratio of nitrosomonas bacterium, nitrobacillus, bacillus, alcaligenes, acinetobacter, xanthomonas bacterium and pseudomonas as 20:25:15:10:5:15:10 to obtain the compound microbial preparation.
8. The preparation method of the bottom sediment remediation agent for treating black and odorous water according to claim 6, wherein the amount of the bottom sediment remediation agent added accounts for 5-10% of the mass of the bottom sediment of the water, the bottom sediment remediation agent and the bottom sediment of the river are fully mixed through a cultivator, and the reaction is carried out in an anaerobic environment.
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| CN202011016031.8A CN112209587A (en) | 2020-09-24 | 2020-09-24 | Bottom mud repairing agent for treating black and odorous water body and preparation method thereof |
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| CN202011016031.8A Pending CN112209587A (en) | 2020-09-24 | 2020-09-24 | Bottom mud repairing agent for treating black and odorous water body and preparation method thereof |
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| CN (1) | CN112209587A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115872578A (en) * | 2022-08-30 | 2023-03-31 | 中交第二航务工程局有限公司 | Sediment modifier for improving survival rate of aquatic plants and application thereof |
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| US6395522B1 (en) * | 1989-11-02 | 2002-05-28 | Alliedsignal Inc. | Biologically active support containing bound adsorbent particles and microorganisms for waste stream purification |
| US20170333962A1 (en) * | 2016-05-19 | 2017-11-23 | Remediation Products, Inc. | Bioremediation composition with a time release material for removing hydrocarbons from contaminated environments |
| CN107651821A (en) * | 2017-11-09 | 2018-02-02 | 湖南永清环保研究院有限责任公司 | A kind of black and odorous water sediment in-situ biochemistry renovation agent, preparation method and restorative procedure |
| CN108911162A (en) * | 2018-07-06 | 2018-11-30 | 华南师范大学 | A kind of black and odorous water bed mud dry powder renovation agent and the preparation method and application thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6395522B1 (en) * | 1989-11-02 | 2002-05-28 | Alliedsignal Inc. | Biologically active support containing bound adsorbent particles and microorganisms for waste stream purification |
| US20170333962A1 (en) * | 2016-05-19 | 2017-11-23 | Remediation Products, Inc. | Bioremediation composition with a time release material for removing hydrocarbons from contaminated environments |
| CN107651821A (en) * | 2017-11-09 | 2018-02-02 | 湖南永清环保研究院有限责任公司 | A kind of black and odorous water sediment in-situ biochemistry renovation agent, preparation method and restorative procedure |
| CN108911162A (en) * | 2018-07-06 | 2018-11-30 | 华南师范大学 | A kind of black and odorous water bed mud dry powder renovation agent and the preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115872578A (en) * | 2022-08-30 | 2023-03-31 | 中交第二航务工程局有限公司 | Sediment modifier for improving survival rate of aquatic plants and application thereof |
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