CN112139211A - Garbage treatment method - Google Patents
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- CN112139211A CN112139211A CN202010944324.6A CN202010944324A CN112139211A CN 112139211 A CN112139211 A CN 112139211A CN 202010944324 A CN202010944324 A CN 202010944324A CN 112139211 A CN112139211 A CN 112139211A
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- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 72
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 62
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 62
- 239000011593 sulfur Substances 0.000 claims abstract description 62
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims abstract description 50
- 241000894006 Bacteria Species 0.000 claims abstract description 49
- -1 nitrate ions Chemical class 0.000 claims abstract description 39
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 38
- 239000000243 solution Substances 0.000 claims abstract description 27
- 238000005507 spraying Methods 0.000 claims abstract description 24
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 20
- 239000011259 mixed solution Substances 0.000 claims abstract description 20
- 238000000926 separation method Methods 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 52
- 229910052757 nitrogen Inorganic materials 0.000 claims description 26
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 10
- 239000000149 chemical water pollutant Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 1
- 238000004332 deodorization Methods 0.000 abstract description 15
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 abstract description 7
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 17
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 17
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 7
- 230000033116 oxidation-reduction process Effects 0.000 description 6
- 239000010802 sludge Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002421 finishing Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 150000003568 thioethers Chemical class 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000000370 acceptor Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009935 nitrosation Effects 0.000 description 1
- 238000007034 nitrosation reaction Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B2101/00—Type of solid waste
- B09B2101/018—Animal meals
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
The invention discloses a garbage treatment method, and relates to the technical field of garbage treatment. The garbage treatment method comprises the following steps: mixing sulfur autotrophic denitrifying bacteria with a nitrogen-containing liquid to obtain a mixed liquid, wherein the nitrogen-containing liquid contains at least one of nitrate ions and nitrite ions; and spraying the mixed solution onto the garbage, fully reacting under a closed condition, and performing solid-liquid separation to obtain treated garbage and solution respectively to finish the treatment of the garbage. The garbage treatment method provided by the invention realizes deodorization under the synergistic effect of the sulfur autotrophic denitrifying bacteria and nitrate ions or nitrite ions, can effectively control the generation of garbage odor, and has the advantages of economy, environmental protection, good deodorization effect, long action time and wide action range.
Description
Technical Field
The invention relates to the technical field of garbage treatment, in particular to a garbage treatment method.
Background
Along with the rapid development of society, the demand of human beings on materials is continuously increased, and the yield of municipal solid waste is continuously increased. According to statistics, the harmless treatment rate of the municipal solid waste is not more than 80%, wherein the main treatment and disposal mode is landfill.
However, in the conventional landfill method, the landfill garbage generates odor such as hydrogen sulfide and thioether under the action of sulfate reducing bacteria, and the odor is harmful to the environment.
Disclosure of Invention
The invention mainly aims to provide a garbage treatment method, and aims to provide a garbage treatment method capable of effectively removing garbage odor.
In order to achieve the purpose, the invention provides a garbage treatment method, which comprises the following steps:
mixing sulfur autotrophic denitrifying bacteria with a nitrogen-containing liquid to obtain a mixed liquid, wherein the nitrogen-containing liquid contains at least one of nitrate ions and nitrite ions;
and spraying the mixed solution onto the garbage, fully reacting under a closed condition, and performing solid-liquid separation to obtain treated garbage and solution respectively, so as to finish the treatment of the garbage.
Optionally, the nitrogen-containing liquid comprises landfill leachate.
Optionally, the particle size of the sulfur autotrophic denitrifying bacteria is 75-250 microns.
Optionally, the mass ratio of the sulfur autotrophic denitrifying bacteria to sulfur elements in the garbage in the mixed solution is (10-15): 1.
Optionally, when the nitrogen-containing liquid only contains nitrate ions, the mass ratio of the sulfur element in the garbage to the nitrogen element in the nitrogen-containing liquid is (1.3-1.6): 1.
Optionally, when the nitrogen-containing liquid only contains nitrite ions, the mass ratio of the sulfur element in the garbage to the nitrogen element in the nitrogen-containing liquid is (0.75-1): 1.
Optionally, when the nitrogen-containing liquid contains nitrate ions and nitrite ions, the mass ratio of the sulfur element in the garbage to the nitrogen element in the nitrogen-containing liquid is (0.75-1.6): 1.
Optionally, the spray mode is an atomized spray.
Optionally, the step of adding the garbage into the closed container, spraying the mixed solution onto the garbage, after sufficient reaction, performing solid-liquid separation to obtain treated garbage and a solution, respectively, and completing treatment of the garbage comprises:
the reaction temperature is 15-28 ℃, and the reaction time is not less than 14 days.
Optionally, the step of spraying the mixed solution onto the garbage, performing solid-liquid separation after sufficient reaction under a closed condition, and obtaining treated garbage and solution respectively, wherein the step of finishing the treatment of the garbage specifically comprises:
spraying the mixed solution on the garbage, and carrying out closed reaction for 13-15 days to obtain crude treated garbage;
and spraying the nitrogen-containing liquid on the roughly treated garbage, then carrying out closed reaction for 13-15 days, repeating the steps of spraying the nitrogen-containing liquid and carrying out closed reaction for 6-7 times, carrying out solid-liquid separation, respectively obtaining treated garbage and solution, and finishing treatment on the garbage.
The garbage treatment method provided by the invention sprays the mixed liquid of the sulfur autotrophic denitrifying bacteria and the nitrogen-containing liquid on the surface of the garbage before the garbage is buried, and H generated by the garbage is treated2S, sulfur autotrophic denitrifying bacteria can use nitrate ions or nitrite ions as electron acceptors to lead H2S reacts with nitrate ions or nitrite ions to be oxidized, so that the sulfur autotrophic denitrifying bacteria and the nitrate ions or the nitrite ions can deodorize under the synergistic action, and meanwhile, the sulfur autotrophic denitrifying bacteria can remove sulfur-containing organic matters such as thioether and the like through assimilation; on the other hand, the sulfur autotrophic denitrifying bacteria can inhibit sulfuric acid by increasing the oxidation-reduction potential of garbageActivity of salt-reducing bacteria to reduce H2The generation of S is economic and environment-friendly, and has good deodorization effect, long action time and wide action range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other related drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of an embodiment of a garbage disposal method according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
It should be noted that those whose specific conditions are not specified in the examples were performed according to the conventional conditions or the conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the existing garbage landfill method, the landfill garbage can generate odor such as hydrogen sulfide, thioether and the like under the action of sulfate reducing bacteria, thus being harmful to the environment.
In view of this, the present invention provides a garbage disposal method, which is combined with a flow diagram of an embodiment of the garbage disposal method provided in fig. 1, and the garbage disposal method includes the following steps:
and step S10, mixing the sulfur autotrophic denitrifying bacteria with a nitrogen-containing liquid to obtain a mixed liquid, wherein the nitrogen-containing liquid contains at least one of nitrate ions and nitrite ions.
In this step, preferably, landfill leachate may be used as the nitrogen-containing liquid.
Because the nitrified liquid of the landfill leachate contains a large amount of nitrate ions and nitrite ions, the nitrified liquid is directly mixed with sulfur autotrophic denitrifying bacteria and then sprayed back to the surface of the landfill, on one hand, the denitrification pressure of a landfill leachate treatment plant can be reduced, and the denitrification treatment cost is reduced; on the other hand, the landfill leachate is from a landfill site, and nitrogen-containing liquid does not need to be reconfigured, so that the treatment cost is saved, and the treatment load of the landfill leachate is not increased.
In addition, in order to make the sulfur autotrophic denitrifying bacteria distributed on the surface of the garbage more uniformly, the particle size of the sulfur autotrophic denitrifying bacteria should not be too large and should be controlled within 75-250 um. In the above particle diameter range, the sulfur autotrophic denitrifying bacteria have good dispersibility, and the particle diameter is referred to as an average particle diameter.
Specifically, in the embodiment of the invention, the sulfur autotrophic denitrifying bacteria are taken from the granular sludge in the UASB reactor which continuously operates for more than 700 days, and based on the defects of narrow action surface and low mass transfer efficiency of the granular sludge after directly acting on the anaerobic sanitary landfill and the non-homogeneous characteristic of the landfill, the granular sludge in the UASB reactor needs to be crushed, the particle size distribution is controlled to be 75-250 μm, and the granular sludge is cultured and domesticated until the denitrification and desulfurization efficiency is stable for use.
The amounts of the sulfur autotrophic denitrifying bacteria, the nitrate ions, the nitrite ions, and the like added in step S10 need to be determined based on the empirical values of the garbage components and the odor emission amount. In the specific application, when garbage is treated, a blank control is simultaneously set, the garbage in the blank control is not sprayed with the mixed solution, and H in the blank control is used2S concentration, determining H in the reactor spraying the mixed solution at the time point2And (4) calculating the concentration of S, further calculating the amount of sulfur autotrophic denitrifying bacteria to be added, and adjusting the amount of the used nitrogen-containing liquid according to the ratio of sulfur to nitrogen.
Specifically, the mass ratio of the sulfur autotrophic denitrifying bacteria to the sulfur elements in the garbage is (10-15): 1, and preferably, experiments show that the mass ratio of the sulfur autotrophic denitrifying bacteria to the sulfur elements in the garbage is 12.2:1, and the deodorization effect is the best under the ratio.
When the nitrogen-containing liquid contains nitrate ions, the mass ratio of the sulfur element in the refuse to the nitrogen element in the nitrogen-containing liquid is preferably (1.3 to 1.6):1, and in this case, it is preferable that the mass ratio of the sulfur element in the refuse to the nitrogen element in the nitrogen-containing liquid is 1.492:1, and the deodorizing effect is most preferable in this ratio.
When the nitrogen-containing liquid contains nitrite ions, the mass ratio of the sulfur element in the waste to the nitrogen element in the nitrogen-containing liquid is preferably (0.75 to 1):1, and in this case, it is preferable that the mass ratio of the sulfur element in the waste to the nitrogen element in the nitrogen-containing liquid is 0.856:1, and the deodorizing effect is most preferable at this ratio.
When the nitrogen-containing liquid contains nitrate ions and nitrite ions, the mass ratio of sulfur in the garbage to nitrogen in the nitrogen-containing liquid is (0.75-1.6): 1, and the deodorization effect is best at this ratio.
And step S20, spraying the mixed solution onto the garbage, carrying out solid-liquid separation after full reaction under a closed condition, respectively obtaining treated garbage and solution, and finishing the treatment of the garbage.
In the step, in order to make the mixed liquid fully contact with the garbage, the mixed liquid is sprayed onto the garbage in a spraying mode, preferably, the spraying mode is atomizing spraying, so that the sulfur autotrophic denitrifying bacteria can be more uniformly distributed on the surface of the garbage, and the deodorization effect is optimized.
The reaction temperature for garbage deodorization is preferably carried out at room temperature, namely 15-28 ℃, and the reaction time is not less than 14 days, so that a heating source is not added, the treatment cost is saved, and H2The removal of S is sufficient.
Under the condition of refuse landfill film covering, before film covering, spraying a mixed solution of sulfur autotrophic denitrifying bacteria and a nitrogen-containing liquid on the surface of refuse, then film covering, reacting for a period of time, and allowing the liquid to flow out of a pipeline under a landfill, namely the solution, so that the refuse deodorization is realized.
In the case of allowing multiple showers, step S20 specifically includes:
s21, spraying the mixed solution onto the garbage, and carrying out closed reaction for 13-15 days to obtain coarse treated garbage;
s22, spraying the nitrogen-containing liquid on the roughly treated garbage, then carrying out closed reaction for 13-15 days, repeating the steps of spraying the nitrogen-containing liquid and closed reaction for 6-7 times, carrying out solid-liquid separation to respectively obtain treated garbage and solution, and finishing the treatment of the garbage.
Due to H2S is continuously generated, and nitrogen in the nitrogen-containing liquid is continuously consumed, so that the deodorization effect can be better by adopting a method of spraying for many times.
In addition, in the case of high requirement for deodorization, after step S22, the nitrogen-containing liquid may be continuously sprayed onto the garbage to ensure no odor escaping from the garbage.
The garbage treatment method provided by the invention sprays the mixed liquid of the sulfur autotrophic denitrifying bacteria and the nitrogen-containing liquid on the surface of the garbage before the garbage is buried, and the sulfur autotrophic denitrifying bacteria can inhibit the activity of sulfate reducing bacteria by improving the oxidation-reduction potential of the garbage, thereby reducing H2Production of S, on the other hand, H for garbage production2S, sulfur autotrophic denitrifying bacteria can use nitrate ions or nitrite ions as electron acceptors to lead H2S reacts with nitrate ions or nitrite ions to be oxidized, thereby realizing the sulfur autotrophic denitrifying bacteria and the nitrate ions or nitrite ionsThe deodorization effect is good, the acting time is long and the acting range is wide.
The technical solutions of the present invention are further described in detail below with reference to specific examples and drawings, it should be understood that the following examples are merely illustrative of the present invention and are not intended to limit the present invention.
Example 1
In a landfill, 1m3The garbage body is a research object, and the conditions are as follows: the environmental temperature is 15-20 ℃, the weight of the garbage is 550 +/-50 kg, the water content is 60.9%, and the sulfur content is 50 ppm. 13.6 plus or minus 0.3g-VSS sulfur autotrophic denitrifying bacteria with the average grain diameter of 214 mu m and 30L nitrosation liquid with the nitrogen content of 50mg/L are mixed to obtain mixed liquid, at the moment, the mass ratio of the sulfur autotrophic denitrifying bacteria to sulfur in the garbage is 12.5:1, the mass ratio of the sulfur in the garbage to nitrogen in the nitrogen-containing liquid is 0.77:1, the mixed liquid is evenly atomized and sprayed on the garbage body in the garbage landfill process, and then the film is coated. After 14 days, H was measured and calculated2The removal rate of S reaches 90 percent.
Example 2
Under the condition of a laboratory, a closed reactor is arranged, 5 +/-0.3 kg of garbage is added into the reactor, 1L of nitrite solution with the nitrogen content of 150mg/L and 0.97g-VSS sulfur autotrophic denitrifying bacteria are sprayed on the garbage, the initial hydrogen sulfide concentration in the reactor is 50 +/-5 ppm, at the moment, the mass ratio of the sulfur autotrophic denitrifying bacteria in the mixed solution to the sulfur in the garbage is 15:1, the mass ratio of the sulfur in the garbage to the nitrogen in the nitrogen-containing solution is 1.6:1, and the temperature in the reactor is 25 +/-3 ℃. In the first 14 days, the average removal rate of hydrogen sulfide reaches 93 percent. At 14 days, the ORP of the effluent of the reactor is-96 mV, which shows that the growth of the sulfate reducing bacteria can be effectively inhibited by increasing the oxidation-reduction potential.
After 14 days, an anaerobic equilibrium was established in the reactor and 2L of nitrite solution with a nitrogen content of 100mg/L were initially sprayed into the reactor every 14 days. In the monitoring of 100 days, the concentration of the hydrogen sulfide in the reactor is always kept at 1 +/-1 ppm, and the average daily removal rate of the hydrogen sulfide reaches 86 percent; the ORP in the reactor was always maintained in the range of more than-150 mV, indicating that the growth of sulfate-reducing bacteria could be effectively inhibited. In 100 days, the nitrogen removal rate in the reactor reaches more than 90 percent.
After 100 days, 1L of nitrite solution containing 50mg/L of nitrogen was sprayed into the reactor every 14 days. And finally, calculating to obtain the average hydrogen sulfide removal rate in the reactor, wherein the average hydrogen sulfide removal rate is over 90 percent.
Example 3
Under the condition of a laboratory, a closed reactor is arranged, 5 +/-0.3 kg of garbage is added into the reactor, 1L of nitrite solution with the nitrogen content of 90mg/L and 0.97g-VSS sulfur autotrophic denitrifying bacteria are sprayed on the garbage, the initial hydrogen sulfide concentration in the reactor is 50 +/-5 ppm, at the moment, the mass ratio of the sulfur autotrophic denitrifying bacteria in the mixed solution to the sulfur in the garbage is 15:1, the mass ratio of the sulfur in the garbage to the nitrogen in the nitrogen-containing solution is 1:1, and the temperature in the reactor is 25 +/-3 ℃. In the first 14 days, the average removal rate of the hydrogen sulfide reaches 91 percent. At 14 days, the effluent ORP of the reactor is-115 mV, which shows that the growth of the sulfate reducing bacteria can be effectively inhibited by increasing the oxidation-reduction potential.
After 14 days, an anaerobic equilibrium was established in the reactor and 2L of nitrite solution with a nitrogen content of 100mg/L were initially sprayed into the reactor every 14 days. In the monitoring of 100 days, the concentration of the hydrogen sulfide in the reactor is always kept at 1 +/-1 ppm, and the average daily removal rate of the hydrogen sulfide reaches 83 percent; the ORP in the reactor was always maintained in the range of more than-150 mV, indicating that the growth of sulfate-reducing bacteria could be effectively inhibited. In 100 days, the nitrogen removal rate in the reactor reaches more than 90 percent.
After 100 days, 1L of nitrite solution containing 50mg/L of nitrogen was sprayed into the reactor every 14 days. And finally, calculating to obtain the average hydrogen sulfide removal rate in the reactor, wherein the average hydrogen sulfide removal rate is over 90 percent.
Comparative example 1
The conditions were the same as in example 1 except that the mixed solution was not sprayed on the garbage. After 14 days, H was measured and calculated2The S removal rate was (10. + -. 3.2)%.
Comparative example 2
The conditions were the same as in example 2 except that the same amount of ultrapure water was sprayed on the garbage, respectively. The ORP in the reactor measured to reach-200 mV at day 20 and-400 mV at day 70, indicating that the growth of sulfate-reducing bacteria could not be inhibited.
As can be seen from the comparison between the above examples and comparative examples, spraying a mixed solution of sulfur autotrophic denitrifying bacteria and a nitrogen-containing solution on the surface of garbage can effectively inhibit the growth of sulfate reducing bacteria and reduce H by increasing the oxidation-reduction potential2Production of S, furthermore, H2The removal rate of S is high, and the deodorization can be effectively realized.
In summary, the invention provides a garbage disposal method, H2The S removal rate is high, the deodorization effect is good, and the sulfur autotrophic denitrifying bacteria can effectively inhibit the growth of sulfate reducing bacteria by increasing the oxidation-reduction potential. In addition, the landfill leachate can be used as a nitrogen-containing liquid to remove nitrogen in the nitrogen-containing liquid, so that deodorization is realized under the synergistic action of sulfur autotrophic denitrifying bacteria and nitrate ions or nitrite ions, and the garbage treatment method provided by the invention can be widely applied to the field of garbage deodorization and has a wide application prospect.
The above is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the scope of the present invention.
Claims (10)
1. A method for treating garbage is characterized by comprising the following steps:
mixing sulfur autotrophic denitrifying bacteria with a nitrogen-containing liquid to obtain a mixed liquid, wherein the nitrogen-containing liquid contains at least one of nitrate ions and nitrite ions;
and spraying the mixed solution onto the garbage, fully reacting under a closed condition, and performing solid-liquid separation to obtain treated garbage and solution respectively, so as to finish the treatment of the garbage.
2. The method of claim 1, wherein the nitrogen-containing liquid comprises landfill leachate.
3. The method according to claim 1, wherein the particle size of the sulfur autotrophic denitrifying bacteria is 75 to 250 μm.
4. The method according to claim 1, wherein the mass ratio of the sulfur autotrophic denitrifying bacteria to the sulfur elements in the waste in the mixed solution is (10-15): 1.
5. The method according to claim 1, wherein when the nitrogen-containing liquid contains only nitrate ions, the mass ratio of sulfur in the waste to nitrogen in the nitrogen-containing liquid is (1.3 to 1.6): 1.
6. The method according to claim 1, wherein when the nitrogen-containing liquid contains only nitrite ions, the mass ratio of sulfur in the waste to nitrogen in the nitrogen-containing liquid is (0.75 to 1): 1.
7. The method according to claim 1, wherein when the nitrogen-containing liquid contains nitrate ions and nitrite ions, the mass ratio of sulfur in the waste to nitrogen in the nitrogen-containing liquid is (0.75 to 1.6): 1.
8. A process according to claim 1, wherein the spray means is an atomized spray.
9. The method according to claim 1, wherein the step of adding the waste into the closed container, spraying the mixed solution onto the waste, reacting the mixture sufficiently, and separating solid and liquid to obtain treated waste and a solution, respectively, and treating the waste comprises:
the reaction temperature is 15-28 ℃, and the reaction time is not less than 14 days.
10. The method according to claim 1, wherein the step of spraying the mixed solution onto the garbage, reacting the mixture sufficiently under a closed condition, and then performing solid-liquid separation to obtain treated garbage and a solution, respectively, and completing the treatment of the garbage specifically comprises:
spraying the mixed solution on the garbage, and carrying out closed reaction for 13-15 days to obtain crude treated garbage;
and spraying the nitrogen-containing liquid on the roughly treated garbage, then carrying out closed reaction for 13-15 days, repeating the steps of spraying the nitrogen-containing liquid and carrying out closed reaction for 6-7 times, carrying out solid-liquid separation, respectively obtaining treated garbage and solution, and finishing treatment on the garbage.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173680A (en) * | 2021-05-08 | 2021-07-27 | 中山大学 | In-situ deodorization and denitrification method for landfill leachate nitrous liquid combined with sulfur oxidation denitrifying bacteria back-spraying |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001327947A (en) * | 2000-05-19 | 2001-11-27 | Kankyo Eng Co Ltd | Quick stabilization and malodor suppression method in waste landfill disposal site and chemical agent to be used therefor |
| KR20020091477A (en) * | 2001-05-30 | 2002-12-06 | 한국건설기술연구원 | Leachate treatment system and method using sulfation bacillius in wastes landfill |
| JP2006116412A (en) * | 2004-10-21 | 2006-05-11 | Tamiko Teika | Treatment method of organic waste |
| CN101804411A (en) * | 2010-03-02 | 2010-08-18 | 华东师范大学 | Method for controlling obnoxious gas of urban refuse landfill |
| CN104129852A (en) * | 2014-06-20 | 2014-11-05 | 浙江工商大学 | Method and reaction device for reducing H2S inner sources of garbage landfill |
-
2020
- 2020-09-09 CN CN202010944324.6A patent/CN112139211A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001327947A (en) * | 2000-05-19 | 2001-11-27 | Kankyo Eng Co Ltd | Quick stabilization and malodor suppression method in waste landfill disposal site and chemical agent to be used therefor |
| KR20020091477A (en) * | 2001-05-30 | 2002-12-06 | 한국건설기술연구원 | Leachate treatment system and method using sulfation bacillius in wastes landfill |
| JP2006116412A (en) * | 2004-10-21 | 2006-05-11 | Tamiko Teika | Treatment method of organic waste |
| CN101804411A (en) * | 2010-03-02 | 2010-08-18 | 华东师范大学 | Method for controlling obnoxious gas of urban refuse landfill |
| CN104129852A (en) * | 2014-06-20 | 2014-11-05 | 浙江工商大学 | Method and reaction device for reducing H2S inner sources of garbage landfill |
Non-Patent Citations (3)
| Title |
|---|
| 孙洪伟等: "UASB-A/O处理城市生活垃圾渗滤液同步除有机物脱氮长期稳定性试验研究", 《北京工业大学学报》 * |
| 张彦浩等: "自养反硝化技术研究进展", 《化工环保》 * |
| 邓旭亮等: "硫自养反硝化技术研究现状与发展趋势", 《工业水处理》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113173680A (en) * | 2021-05-08 | 2021-07-27 | 中山大学 | In-situ deodorization and denitrification method for landfill leachate nitrous liquid combined with sulfur oxidation denitrifying bacteria back-spraying |
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