CN108911162B - Black and odorous water body sediment dry powder repairing agent and preparation method and application thereof - Google Patents
Black and odorous water body sediment dry powder repairing agent and preparation method and application thereof Download PDFInfo
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- CN108911162B CN108911162B CN201810735981.2A CN201810735981A CN108911162B CN 108911162 B CN108911162 B CN 108911162B CN 201810735981 A CN201810735981 A CN 201810735981A CN 108911162 B CN108911162 B CN 108911162B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 125
- 239000000843 powder Substances 0.000 title claims abstract description 64
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 244000005700 microbiome Species 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 24
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
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- 230000001580 bacterial effect Effects 0.000 claims description 6
- 239000000375 suspending agent Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 239000001888 Peptone Substances 0.000 claims description 5
- 108010080698 Peptones Proteins 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 229930006000 Sucrose Natural products 0.000 claims description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 229910021536 Zeolite Inorganic materials 0.000 claims description 5
- 235000013405 beer Nutrition 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 5
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 5
- 239000010881 fly ash Substances 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 239000000395 magnesium oxide Substances 0.000 claims description 5
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 5
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 5
- 235000019319 peptone Nutrition 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 239000010457 zeolite Substances 0.000 claims description 5
- 241000589220 Acetobacter Species 0.000 claims description 3
- 241000607534 Aeromonas Species 0.000 claims description 3
- 241000588986 Alcaligenes Species 0.000 claims description 3
- 244000063299 Bacillus subtilis Species 0.000 claims description 3
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 3
- 241000589516 Pseudomonas Species 0.000 claims description 3
- 241000190967 Rhodospirillum Species 0.000 claims description 3
- 238000007605 air drying Methods 0.000 claims description 3
- 238000012258 culturing Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 241000186660 Lactobacillus Species 0.000 claims description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims description 2
- 229940039696 lactobacillus Drugs 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 17
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 9
- 239000011574 phosphorus Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 8
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 3
- 239000010865 sewage Substances 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 230000000644 propagated effect Effects 0.000 abstract description 2
- 239000003344 environmental pollutant Substances 0.000 description 11
- 231100000719 pollutant Toxicity 0.000 description 11
- 239000002351 wastewater Substances 0.000 description 9
- 238000005067 remediation Methods 0.000 description 8
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 7
- 230000008439 repair process Effects 0.000 description 6
- 239000013043 chemical agent Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 238000011049 filling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000002131 composite material Substances 0.000 description 3
- 230000033116 oxidation-reduction process Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000002068 microbial inoculum Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
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- 238000001179 sorption measurement Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F2101/105—Phosphorus 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
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a black and odorous water body bottom mud dry powder repairing agent, and a preparation method and application thereof. The invention selects the microorganism which has degradation effect on organic pollutants such as nitrogen, phosphorus and the like in the black and odorous water body, and fixes the microorganism on the carrier by matching with the specially prepared porous light microorganism carrier, and the microorganism is prepared into the form of dry powder preparation. The dry powder is applied to the water body and the bottom sediment to be restored, and the microorganisms which are immobilized and grown on the carrier can be gradually propagated in the water body in the process that the preparation is gradually settled and contacts with the water body. The repairing carrier is a special porous material, so that the repairing carrier has the effects of denitrification, dephosphorization and the like, and after entering the sediment, the repairing carrier and attached and growing microorganisms are used for synergistically degrading organic pollutants in a water body, so that the aims of constructing a good ecological environment and gradually eliminating black and odorous sediment and overlying water are fulfilled.
Description
Technical Field
The invention belongs to the technical field of polluted water body remediation, and particularly relates to a black and odorous water body sediment dry powder remediation agent, and a preparation method and application thereof.
Background
The reasons for the black and odorous water mainly come from the excessive discharge of exogenous pollutants such as domestic sewage containing a large amount of organic pollutants, industrial wastewater, wastewater from livestock and poultry breeding and waste oil in the shipping process. Excessive organic pollutants are discharged into a water body, are metabolized and decomposed by aquatic organisms, quickly consume oxygen in the water, and ensure that the overlying water body is anoxic, when the content of dissolved oxygen is lower than 0.2mg/L, the water body enters an anaerobic state, anaerobic microorganisms propagate in the water body in a large quantity, the organic pollutants in the water body are decomposed, volatile gases such as ammonia gas, hydrogen sulfide and mercaptan with foul odor are further generated, and a large quantity of humus in the water body forms suspended matters after absorbing FeS, MnS and other substances, so that the water body is blackened. Meanwhile, in the floating process of the suspended matters, black bottom sediment is brought into the overlying water, so that the phenomenon that the overlying water body is blackened and smelly is more prominent. The appearance of black and odorous water aggravates the current water quality type water shortage situation and causes more serious water resource crisis.
The repair of the black and odorous water body bottom sediment can be divided into three types, namely physical repair, chemical repair and biological repair according to reaction mechanisms, and the three types of repair methods are generally used in a combined mode.
The physical repair of the sediment mainly comprises methods of dredging, diluting and scouring by water, covering by stable materials and the like. The most direct method for improving the black and odorous phenomenon of the water body is to carry out sediment dredging, but the sediment dredging construction with water has large quantity, high water content and large volume, more importantly, the original ecological balance of the water body bottom is destroyed by dredging, and the black and odorous phenomenon is eliminated in a short time. The covering is to use covering material to separate mud-water interface between polluted bottom mud and water body, and utilize physical adsorption, hydraulic barrier, passivation and other physical actions between covering material and deposit to make the pollutant in the bottom mud unable to directly dissolve and diffuse to the water body, can effectively prevent the bottom mud from secondary pollution to the water body, thus reach the repairing effect, but the repairing mode of covering will change the ecological environment of the original water body, and the balance to the original aquatic ecosystem will be destroyed.
The chemical remediation technology of the sediment mainly comprises the steps of adding a chemical agent into the sediment, influencing the release of pollutants by changing environmental factors such as oxidation-reduction potential, pH value and the like of a water body, or directly generating chemical reactions such as oxidation-reduction, passivation and the like with the chemical agent to remove or stabilize the pollutants in the sediment, but the addition of the chemical agent can possibly change the characteristics such as oxidation-reduction potential and the like of the water body, so that the original ecological environment is destroyed to a certain extent, the sediment is thickened due to improper addition for a long time, and a large amount of remediation cost is required by adding the chemical agent continuously.
The biological remediation technology of the sediment is characterized in that screened microorganisms or aquatic plants and the like are added in the water body, the number of the microorganisms, the aquatic plants and the animals in the water body and the intensity of proliferation metabolism are artificially enhanced, so that pollutants in the water body are gradually decomposed into micromolecular substances, the purposes of water body remediation and new water body ecological balance construction are gradually achieved, and therefore the remediation effect is long in duration and the cost is relatively low. However, in the past, because the microbes for repairing the black and odorous water body are mainly liquid microbial inoculums, the microbes added into the water body are easy to run off along with the flow of water due to the lack of a fixed matrix of the microbes, the repairing effect is greatly influenced, and the microbial inoculums need to be added continuously if the better repairing effect is maintained.
Disclosure of Invention
The invention aims to fix microorganisms on a carrier by preferably selecting the microorganisms which have degradation effect on organic pollutants such as nitrogen, phosphorus and the like in black and odorous water and matching with a specially prepared porous light microorganism carrier, and the microorganisms are prepared into a form of a dry powder preparation. The dry powder is applied to the water body and the bottom sediment to be restored, and the microorganisms which are immobilized and grown on the carrier can be gradually propagated in the water body in the process that the preparation is gradually settled and contacts with the water body. The repairing carrier is a special porous material, so that the repairing carrier has the effects of denitrification, dephosphorization and the like, and after entering the sediment, the repairing carrier and attached and growing microorganisms are used for synergistically degrading organic pollutants in a water body, so that the aims of constructing a good ecological environment and gradually eliminating black and odorous sediment and overlying water are fulfilled.
The technical scheme of the invention is as follows:
a preparation method of a black and odorous water body sediment dry powder repairing agent comprises the following steps:
(1) mixing dried beer sludge, fly ash, diatomite, zeolite, lime, magnesium oxide, sodium chloride and cement powder, and uniformly stirring to obtain a material A;
(2) adding aluminum powder into deionized water, and uniformly stirring to prepare an aluminum powder suspending agent;
(3) pouring an aluminum powder suspending agent into the material A, uniformly stirring to obtain slurry, pouring the slurry into a mold, standing, steam curing, maintaining, and then grinding into a porous dry powder material;
(4) inoculating domesticated microorganism into suspension composed of peptone, white sugar and water, culturing at 20 + -10 deg.C under anoxic condition for 2-3d to make OD600 value of the suspension 0.5, and preparing to obtain bacterial suspension, wherein the microorganism is at least one of Bacillus subtilis, Pseudomonas, yeast, Rhodospirillum, Acetobacter, Alcaligenes, lactobacillus and Aeromonas;
(5) and mixing and stirring the porous dry powder material and the bacterial suspension to form slurry, adsorbing for 1-2 days, and then air-drying to fix microorganisms on the porous dry powder material, thereby obtaining the black and odorous water body sediment dry powder repairing agent.
Preferably, the adding amount of each component in the step (1) is as follows: 30-35 parts of dried beer sludge, 10-25 parts of fly ash, 5-15 parts of diatomite, 5-10 parts of zeolite, 5-15 parts of lime, 2-5 parts of magnesium oxide, 1-2 parts of sodium chloride and 5-15 parts of cement powder.
Preferably, the stirring time in step (1) is 5 min.
Preferably, in the step (2), the adding amount of the aluminum powder accounts for 0.5 percent of the weight of the material A, and the weight of the deionized water accounts for 0.5 percent of the weight of the material A.
Preferably, the stirring time in step (2) is 2 min.
Preferably, the stirring time in step (3) is 1 min.
Preferably, in the step (3), the standing temperature is 25-35 ℃, the standing time is 10 hours, the steam-curing temperature is 25-35 ℃, the steam-curing time is 48 hours, and the curing time is 10 days.
Preferably, the suspension in step (4) is composed of: 0.1-0.5 part by weight of peptone, 0.5-1 part by weight of white sugar and 98-98.5 parts by weight of deionized water.
The black and odorous water body bottom mud dry powder repairing agent prepared by the method.
When the black and odorous water body sediment dry powder repairing agent is used for repairing black and odorous water body sediment, the amount of the black and odorous water body sediment dry powder repairing agent added into a water body to be repaired is 0.01-1 g/L according to the water quality of the black and odorous water body and the pollution degree of the sediment.
The invention has the following beneficial effects:
the black and odorous water body bottom mud dry powder repairing agent prepared by the invention is in a form of porous carrier-microorganism composite dry powder, so that the storage and transportation cost of a microorganism preparation is greatly reduced, and the repairing carrier is a special porous material and has the effects of denitrification, dephosphorization and the like, and after entering the bottom mud, the repairing carrier and attached and growing microorganisms are cooperated to degrade organic pollutants in the water body, so that the purposes of constructing a good ecological environment and gradually eliminating the black and odorous bottom mud and water coated on the black and odorous bottom mud are achieved.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments, but the present invention is not limited thereto.
Example 1
A preparation method of a black and odorous water body sediment dry powder repairing agent comprises the following steps:
(1) mixing 30 parts by weight of dried beer sludge, 18 parts by weight of fly ash, 10 parts by weight of diatomite, 7 parts by weight of zeolite, 11 parts by weight of lime, 3 parts by weight of magnesium oxide, 1 part by weight of sodium chloride and 12 parts by weight of cement powder, and stirring for 5min to obtain a material A;
(2) adding aluminum powder accounting for 0.5 percent of the weight of the material A into deionized water accounting for 0.5 percent of the weight of the material A, and stirring for 2min to prepare an aluminum powder suspending agent;
(3) pouring an aluminum powder suspending agent into the material A, stirring for 1min to obtain slurry, pouring the slurry into a mold, standing for 10h at 30 ℃, then performing steam curing for 48h at 30 ℃, then performing curing for 10d, and then performing powder grinding to obtain a porous dry powder material;
(4) inoculating domesticated bacillus subtilis, pseudomonas, saccharomycetes, rhodospirillum, acetobacter, alcaligenes, lactic acid bacteria and aeromonas to a suspension consisting of 0.5 weight part of peptone, 1 weight part of white sugar and 98.5 weight parts of water, and culturing for 3 days at 20 ℃ under an anoxic condition to enable the OD600 value of the suspension to be 0.5 to prepare a bacterial suspension;
(5) and mixing and stirring the porous dry powder material and the bacterial suspension to form slurry, adsorbing for 2d, and then air-drying to fix the microorganisms on the porous dry powder material, thereby obtaining the black and odorous water body sediment dry powder repairing agent.
Adding the black and odorous water body sediment dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the adding amount of 0.01g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Example 2
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Adding the black and odorous water body sediment dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the adding amount of 0.05g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Example 3
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Adding the black and odorous water body sediment dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the adding amount of 0.1g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Example 4
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Adding the black and odorous water body sediment dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the adding amount of 0.5g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Example 5
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Adding the black and odorous water body bottom mud dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the adding amount of 1g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Example 6
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Removing stones, leaves and the like from bottom mud and overlying raw water of a certain black and odorous river, then filling the bottom mud and the overlying raw water into a reactor according to the proportion of 1:2, adding the dry powder repairing agent of the bottom mud of the black and odorous water into the reactor according to the adding amount of 0.01g/L, uniformly mixing, standing, placing in a dark and cool place, carrying out standing experiments for 10 days, 20 days, 30 days and 40 days at the temperature of 20 ℃, and analyzing mud quality and water quality indexes and evaluating the repairing effect.
Example 7
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Removing stones, leaves and the like from bottom mud and overlying raw water of a certain black and odorous river, then filling the bottom mud and the overlying raw water into a reactor according to the proportion of 1:2, adding the dry powder repairing agent of the bottom mud of the black and odorous water into the reactor according to the adding amount of 0.1g/L, uniformly mixing, standing, placing in a dark and cool place, carrying out standing experiments for 10 days, 20 days, 30 days and 40 days at the temperature of 20 ℃, and analyzing mud quality and water quality indexes and evaluating the repairing effect.
Example 8
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Removing stones, leaves and the like from bottom mud and overlying raw water of a certain black and odorous river, then filling the bottom mud and the overlying raw water into a reactor according to the proportion of 1:2, adding the dry powder repairing agent of the bottom mud of the black and odorous water into the reactor according to the adding amount of 1g/L, uniformly mixing, standing, placing in a dark and cool place, carrying out standing experiments for 10 days, 20 days, 30 days and 40 days at the temperature of 20 ℃, and analyzing mud quality and water quality indexes and evaluating the repairing effect.
Comparative example 1
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Adding the black and odorous water body bottom mud dry powder repairing agent into simulated wastewater with COD, ammonia nitrogen and total phosphorus concentrations of 120mg/L, 20mg/L and 2mg/L respectively according to the addition amount of 0g/L, uniformly stirring, standing at 20 ℃ for 6 hours and 12 hours, and then calculating the removal rate of pollutants.
Comparative example 2
The preparation method of the black and odorous water body sediment dry powder repairing agent is the same as that of the embodiment 1.
Removing stones, leaves and the like from bottom mud and overlying raw water of a certain black and odorous river, then filling the bottom mud and the overlying raw water into a reactor according to the proportion of 1:2, adding the dry powder repairing agent of the bottom mud of the black and odorous water into the reactor according to the adding amount of 0g/L, uniformly mixing, standing, placing in a dark and cool place, carrying out standing experiments for 10 days, 20 days, 30 days and 40 days at the temperature of 20 ℃, and analyzing mud quality and water quality indexes and evaluating the repairing effect.
Evaluation of results
The treatment effects of the simulated wastewater of examples 1 to 5 and comparative example 1 are shown in table 1 below.
TABLE 1 treatment Effect of in-situ composite Dry powder remediation agent on wastewater containing simulation
The repairing effects of the black and odorous river sediment and the overlying water of examples 6 to 8 and comparative example 2 are shown in table 2 below.
TABLE 2 repairing effect of in-situ composite dry powder repairing agent on bottom mud and upper water of black and odorous river
From the test results in the tables 1 and 2, the dry powder repairing agent for the bottom mud of the black and odorous water body prepared by the invention can obviously reduce the COD, ammonia nitrogen and total phosphorus contents of the bottom mud and the overlying water of the simulated sewage and the black and odorous river.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (7)
1. The application of the black and odorous water body bottom sediment dry powder repairing agent is characterized in that the amount of the black and odorous water body bottom sediment dry powder repairing agent added into a water body to be repaired is 0.01-1 g/L according to the water quality of the black and odorous water body and the pollution degree of the bottom sediment;
the preparation method of the black and odorous water body sediment dry powder repairing agent comprises the following steps:
(1) mixing dried beer sludge, fly ash, diatomite, zeolite, lime, magnesium oxide, sodium chloride and cement powder, and uniformly stirring to obtain a material A;
(2) adding aluminum powder into deionized water, and uniformly stirring to prepare an aluminum powder suspending agent;
(3) pouring an aluminum powder suspending agent into the material A, uniformly stirring to obtain slurry, pouring the slurry into a mold, standing, steam curing, maintaining, and then grinding into a porous dry powder material;
(4) inoculating domesticated microorganism into suspension composed of peptone, white sugar and water, culturing at 20 + -10 deg.C under anoxic condition for 2-3d to make OD600 value of the suspension 0.5, and preparing to obtain bacterial suspension, wherein the microorganism is at least one of Bacillus subtilis, Pseudomonas, yeast, Rhodospirillum, Acetobacter, Alcaligenes, lactobacillus and Aeromonas;
(5) mixing and stirring the porous dry powder material and the bacterial suspension to form slurry, adsorbing for 1-2 days, and then air-drying to fix microorganisms on the porous dry powder material, thereby obtaining the black and odorous water body sediment dry powder repairing agent;
wherein, the adding amount of each component in the step (1) is as follows: 30-35 parts of dried beer sludge, 10-25 parts of fly ash, 5-15 parts of diatomite, 5-10 parts of zeolite, 5-15 parts of lime, 2-5 parts of magnesium oxide, 1-2 parts of sodium chloride and 5-15 parts of cement powder.
2. The application of the black and odorous water body bottom mud dry powder repairing agent according to claim 1, wherein the stirring time in the step (1) is 5 min.
3. The application of the black and odorous water body bottom mud dry powder repairing agent according to claim 1, wherein in the step (2), the adding amount of the aluminum powder accounts for 0.5% of the weight of the material A, and the weight of the deionized water accounts for 0.5% of the weight of the material A.
4. The application of the black and odorous water body bottom mud dry powder repairing agent according to claim 1, wherein the stirring time in the step (2) is 2 min.
5. The application of the black and odorous water body bottom mud dry powder repairing agent according to claim 1, wherein the stirring time in the step (3) is 1 min.
6. The application of the black and odorous water body bottom mud dry powder repairing agent according to claim 1, wherein in the step (3), the standing temperature is 25-35 ℃, the standing time is 10 hours, the steam curing temperature is 25-35 ℃, the steam curing time is 48 hours, and the curing time is 10 days.
7. The application of the black and odorous water body sediment dry powder repairing agent according to claim 1, wherein in the step (4), the suspension is composed of: 0.1-0.5 part by weight of peptone, 0.5-1 part by weight of white sugar and 98-98.5 parts by weight of deionized water.
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| CN109694134A (en) * | 2019-01-24 | 2019-04-30 | 张庆堂 | A kind of porosity sewage purification bamboo ball and its processing method |
| CN110104913A (en) * | 2019-03-29 | 2019-08-09 | 浙江融信环保科技有限公司 | A kind of sediment repairing agent and its method applied to in-situ sediment remediation |
| CN110104920B (en) * | 2019-06-05 | 2022-01-28 | 漳州卫生职业学院 | River bottom in-situ repairing agent and preparation method and application thereof |
| CN110885773B (en) * | 2019-08-20 | 2021-10-15 | 中国环境科学研究院 | Method for treating or purifying black and odorous water quality |
| CN112209587A (en) * | 2020-09-24 | 2021-01-12 | 辽宁蓝创生物环保科技有限公司 | Bottom mud repairing agent for treating black and odorous water body and preparation method thereof |
| CN112250268A (en) * | 2020-09-29 | 2021-01-22 | 南京乐萱生态环境科技有限公司 | Biological preparation for efficiently degrading water ecological black and odorous bottom mud and preparation method thereof |
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| JPS5644100A (en) * | 1979-09-17 | 1981-04-23 | Takenaka Komuten Co Ltd | Dehydration/caking treating method of sludge |
| CN103739058A (en) * | 2014-01-06 | 2014-04-23 | 上海交通大学 | Sewage reinforced phosphorous removal packing and preparation method thereof |
| CN107445432A (en) * | 2017-08-02 | 2017-12-08 | 湖北茂源水生态资源开发有限公司 | A kind of riverbed sludge processing method |
| CN108033575A (en) * | 2017-12-29 | 2018-05-15 | 广州市环境保护工程设计院有限公司 | A kind of black and odorous water remedying sludge method |
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| JPS5644100A (en) * | 1979-09-17 | 1981-04-23 | Takenaka Komuten Co Ltd | Dehydration/caking treating method of sludge |
| CN103739058A (en) * | 2014-01-06 | 2014-04-23 | 上海交通大学 | Sewage reinforced phosphorous removal packing and preparation method thereof |
| CN107445432A (en) * | 2017-08-02 | 2017-12-08 | 湖北茂源水生态资源开发有限公司 | A kind of riverbed sludge processing method |
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