CN101352578A - High-efficient deodorant solution for malodorous gas of consumer waste and preparation method thereof - Google Patents
High-efficient deodorant solution for malodorous gas of consumer waste and preparation method thereof Download PDFInfo
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- CN101352578A CN101352578A CNA2008101421040A CN200810142104A CN101352578A CN 101352578 A CN101352578 A CN 101352578A CN A2008101421040 A CNA2008101421040 A CN A2008101421040A CN 200810142104 A CN200810142104 A CN 200810142104A CN 101352578 A CN101352578 A CN 101352578A
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Abstract
The invention discloses an efficient deodorant liquid used for removing malodorous gas of household wastes and a preparation method thereof, belonging to the technical field of gas purification products. The basic components of the deodorant liquid are hydrogen sulfide oxidation catalysis solution and nitrobacteria culture suspension, and the deodorant liquid is obtained by uniformly mixing the hydrogen sulfide oxidation catalysis solution, the nitrobacteria culture suspension and water in a proper proportion. The efficient deodorant liquid for removing malodorous gas of household wastes can quickly oxidize and decompose the malodorous components in the malodorous gas such as hydrogen sulfide, ammonia, low molecular organic acids, which are then transformed and degraded into innocuous elemental sulfur, nitrate, water, carbon dioxide, and the like, thereby quickly eliminating stench. Therefore, the deodorant liquid can be widely applied to refuse landfills, refuse transfer stations, animal feeding huts, and the like places. The efficient deodorant liquid for removing malodorous gas of household wastes and the preparation method thereof disclosed by the invention has the advantages of simplicity, reliability, low cost, remarkable deodorization effect, innocuity and harmlessness to human body, no stimulation and secondary pollution, as well as broad application prospect.
Description
One, technical field
The present invention relates to a kind of high-efficient deodorant solution for malodorous gas of consumer waste and preparation method thereof, belong to the gas purification product technical field.More particularly, it is a kind of high-efficient deodorant solution for malodorous gas that can be widely used in places such as refuse landfill, garbage transfer station, its feeding booth and preparation method thereof.Its manufacture method is simple, and cost is low, and deodorizing effect is remarkable, and is nontoxic, harmless, non-stimulated and do not produce secondary pollution to human body.
Two, technical background
The foul gas composition all can produce under aerobic and anaerobic condition, but the main sordes matter that is comes from anaerobic fermentation process.House refuse is in stacking or composting process, and when oxygen was enough, organic principle in the rubbish such as protein etc. produced irritative gas NH under the effect of aerobic bacteria
3Deng; When oxygen was not enough, anaerobic bacteria was decomposed into low-molecular-weight organic compound with Organic substance, for example, and the compound H of organic acid, aldehyde, ketone, sulfur-bearing
2S, mercaptan, thio-ether type compounds etc. and nitrogenous chemical compound amine etc.
House refuse in the sanitary filling field contains large amount of organic, after landfill yard closes, finally be covered with under the anaerobic condition that causes with the high density polyethylene (HDPE) cladding material, the Organic substance in the rubbish is rotted to decompose, inevitably can be produced pungent stink, promptly produces odor pollution.These odorants can cause people's discomfort, make people's inappetence, feel dizzy, feel sick, vomiting etc.It has the duality of atmospheric pollution and harmful gas pollution, is handled as not taking appropriate measures, and directly to discharging outside the venue, can work the mischief to surrounding and personnel.Its concrete toxic action mainly shows the following aspects: (1) influences people's olfactory sensation: nervous system is under the situation that is subjected to the foul gas stimulation, and the imbalance of cerebral cortex regulatory function if things go on like this can cause the olfactory function forfeiture; (2) influence people's breathing: the people can produce unconscious control breathing behavior under the foul gas environment, and long-term serious stimulation finally can cause respiratory system to get muddled; (3) stimulate people's sense organ: have the gases of a lot of people of stimulation sense organs in the foul gas, the eyes of knowing from experience the people such as ammonia and aldehydes [produce injury; (4) stimulation people's nervous system: the H in the foul gas
2Gases such as S can produce serious toxic action to nervous system, can have influence on the blood of human body blood circulation, cause the endocrine disturbance, digestive functional disturbance.When situation was serious, foul smell also can make being wounded in one's self esteem of the public, people is invested waste treatment facility lose the confidence, and caused the market decline, and the soil loses to hire out and is worth, revenue decline, and the output value and sales volume descend.
According to studies show that, the composition of foul gas mainly comprises: 1. sulfur-containing compound, and as H
2S, SO
2, mercaptan, thioether etc.; 2. nitrogen-containing compound is as ammonia, amine, amide, indole etc.; 3. low-molecular-weight organic matter is as alcohol, phenol, aldehyde, ketone, organic acid etc.Under the specific environment after refuse landfill is closed, be in the main H of having of composition of the foul gas that the landfill waste dissipation of anaerobic state comes out
2S, ammonia, amine, oxygen-bearing organic matter (especially low molecular organic acids) etc., these foul gass have boiling point low, volatile, soluble in water, than great, can be along characteristics such as ground diffusions.They not only serious harm to landfill yard staff's physical and mental health, influence peripheral expanding economy, and, caused the extensive concern of the whole society along with the develop rapidly of society has become a kind of serious public hazards, the stench problem is anxious to be solved.
Along with the development of China's sanitary filling field towards environmental and comprehensive utilization type direction, the deodorization problem in is very urgent.Current application foul gas processing method mainly contains neutralisation, burning method, WATER-WASHING METHOD, active carbon adsorption, high-temperature oxidation, chemical method and Biological fitler method etc.These conventional methods of odor treatment respectively have its benefit and limitation.In neutralisation, nertralizer is that a class can react and eliminate it and be the chemical compound of smelly effect with the sordes matter that is in the foul gas.Spray nertralizer with the elimination foul gas when foul smelling gas produces or before estimating to produce, but uncertain factor is many, wayward.The advantage of burning method is that to remove the efficient that foul gas pollutes high, simple, and foul smell has certain calorific value, and burning process need not to consume a large amount of fuel.But this method equipment investment is big, operating cost is higher, and the probability that produces secondary pollution is arranged.WATER-WASHING METHOD can be removed effectively to the gas of good water solubility, but because this processing method does not change the essence that is sordes matter, having adsorbed the water that is sordes matter also needs further to handle.During with the activated carbon adsorption deodorization,, can't regenerate after the consumption and need filling again, stop up etc. former easily thereby can not be in addition as main odor treatment method because the absorbability of active carbon is limited.In the process of chemical Treatment foul gas, utilize contain can absorption, neutralization and the oxidation aqueous solution that is the chemicals of sordes matter removes and is sordes matter in the foul gas.But this method need consume a large amount of chemical agents, the operating cost height, and the waste water that generates needs otherwise processed.High-temperature oxidation is that foul smell is handled a second under 760 ℃ of high temperature, will be the oxidation of sordes matter.This method equipment investment and operating cost are all very high, and its odor removal efficient does not but have much difference with additive method.Biological fitler method is by means of the adsorption of the solid packing of the nutritional solution moistening that is contained microorganism in the biofilter, is sordes matter in the foul smell that dams, and the latter is again by wherein microbial degradation.Biological fitler method has that cost is low, efficient is high and can handle advantages such as multiple pollutant simultaneously.Multiple volatile organic matter to difficult degradation also has treatment effect preferably, is popular in the world at present odor treatment method.But Biological fitler method is disperseed unsettled foul gas for the source, is difficult for implementing because of collecting difficulty.The method of all above-mentioned processing foul gass is from initial dilution diffusion, washing, develop into traditional absorption, burning, chemical absorbing, until deodorization technologies such as emerging biological deodorization, photochemical catalytic oxidation, ozone oxidation, plasma decomposes, all nothing more than being by means of physics, chemistry, biological means, or its process integration, by processes such as dilution, neutralization, absorption conversion or biodegradations, reduce or eliminate it.In conjunction with the practical situation of landfill yard, the biological deodorization technology is because of its operating cost is extremely low, good deodorization effect, characteristics such as easy to operate, become in China's refuse landfill deodorant dominant technology on a large scale gradually.
A kind of preparation method of deodorizer is disclosed in Chinese patent CN101073674A; this method is mainly fermented several kinds of Chinese medicinal materials through processed, sealing; that chitosan carries out is deacetylated, methylate handle after, add pure water and slaine and mix and promptly obtain deodorant products.This method raw material type is various, the step complexity, and the deodorization adaptability is relatively poor.Chinese patent CN1145592A discloses a kind of deodorizer and deodorizing method thereof, this deodorizer is the deodorization composition that will be made of copper oxide, manganese oxide and silver nitrate, carrier band forms on the carrier substrate that with the active carbon is main constituent, be mainly used in hydrogen sulfide, various thio-alcohol, ammonia and the amine etc. removed in the foul gas, bad for the low-molecular-weight organic matter removal effect.Therefore, press for that to seek a kind of manufacture method simple, easy to use, cost is low, and deodorizing effect is remarkable, and is nontoxic, harmless, non-stimulated and do not produce the deodorising product of secondary pollution to human body.
Three, summary of the invention
The purpose of this invention is to provide a kind of high-efficient deodorant solution for malodorous gas of consumer waste and preparation method thereof.It is simple with manufacture method, and cost is low, and deodorizing effect is remarkable, and is nontoxic, harmless, non-stimulated and not produce secondary pollution be feature to human body.This high-efficient deodorant solution for malodorous gas of consumer waste can absorb effectively rapidly and transform that domestic waste distributes is sordes matter, eliminates their pollutions to environment.
High-efficient deodorant solution for malodorous gas of consumer waste provided by the invention contains nitrobacteria, has the nutrient salt solution of high buffer capacity.Its operation principle is: the hydrogen sulfide in the stench air-flow, ammonia, amine, sulfhydryl compound and low-molecular-weight organic acid, ketone and aldehyde etc. are the deodorant liquid that sordes matter had high buffer capacity and absorb rapidly.Under the effect of oxygen, be oxidized to elementary sulfur in hydrogen sulfide oxidation catalysis solution that the ferric ion complex of absorbed hydrogen sulfide in deodorant liquid formed and the air.Nitrobacteria in the deodorant liquid is a nitrate with ammoxidation, eliminates the penetrating odor of ammonia.Nutrient salts in the deodorant liquid have been for the microorganism that is present in the rubbish surface provides better growing conditions, make them can be promptly be sordes qualitative change Cheng Shui and carbon dioxide with what absorb, thereby have eliminated the odor pollution that these materials produce.Following chemical equation can be explained the high-efficient deodorant solution for malodorous gas of consumer waste deodorization mechanism that the present invention discloses more clearly.
H
2S+Fe
3+→Fe
2++S+H
2O
Fe
2++O
2→Fe
3+
The high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses is dark red to pink liquid, odorless, nonhazardous, pH value 7～8.Hydrogen sulfide oxidation catalysis solution, nitrobacteria that it mainly is made up of the ferric ion complex and the high resiliency inorganic salt solution that is suitable for growth of microorganism are formed.Need preserve being lower than under 30 ℃ the condition.Wherein the hydrogen sulfide oxidation catalysis solution of being made up of the ferric ion complex is ferrous sulfate or other iron salt, for example, soluble ferric iron salt and metal complex/intercalating agents such as iron chloride, ferric nitrate, iron acetate, ferric citrate, for example, ethylenediaminetetraacetic acid (EDTA) or dithiocar-bamate, the solution of composition.The high resiliency inorganic salt solution that is suitable for growth of microorganism mainly comprises potassium dihydrogen phosphate, sodium dihydrogen phosphate, magnesium sulfate, copper sulfate, ferrous sulfate, sodium carbonate and EDTA etc.The nitrobacteria that contains in the high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses, be nitrobacteria selective enrichment culture fluid and the nitrobacteria enrichment culture method of utilizing the present invention to design, the autotrophy that concentration and separation goes out from soil or activated sludge or the foster type nitrobacteria of holding concurrently, for example, Hydrogenomonaseutropha, Nitrosomonas europaea, Nitrobacter sp., Alcaligenes odorans and Nitrosolobusmultiformis.
The preparation method of high-efficient deodorant solution for malodorous gas of consumer waste provided by the invention may further comprise the steps:
The preparation of a, hydrogen sulfide oxidation catalysis solution: with a certain amount of metal chelating agent, for example, tetrasodium salt of EDTA or dithiocar-bamate are soluble in water, and the ferrous salt that under agitation slowly adds equivalent forms light green solution; Behind ten times of above-mentioned solution dilutions, promptly get hydrogen sulfide oxidation catalysis solution make the color of solution change pale red into the air pump bubbling air after by light green.
The preparation of b, nitrobacteria culture suspension: nitrobacteria is a class aerobic bacteria.Under aerobic state, they can be nitrous acid and nitric acid as electron donor with ammoxidation with ammonia nitrogen, obtain the required energy of growth, assimilation CO
2The nitrobacteria culture is that the nitrobacteria with concentration and separation is inoculated in the nitrobacteria enrichment culture liquid liquid that contains a large amount of nitrobacterias that obtains behind aerobic culture.
The preparation of c, high-efficient deodorant solution for malodorous gas of consumer waste: under stirring condition, above-mentioned hydrogen sulfide oxidation catalysis solution and nitrobacteria culture suspension and water are promptly got the high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses behind the uniform mixing by a certain percentage.
Compared with prior art, the advantage and the effect that have of the present invention is as follows:
1, good deodorization effect.The present invention is formulated in proportion with iron salt solutions, nitrobacteria and water, and odorants such as hydrogen sulfide, ammonia and low molecular organic acids are had significant removal effect.
2, handle the effect height.The present invention uses chemistry and biological deodorizing technology to strengthen it greatly and handles the effect of odor pollution.After spraying the high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses on the house refuse, the ammonia that rubbish distributes, hydrogen sulfide, low molecular weight organic acid and contain the sulfydryl odorant and absorbed rapidly and be converted into elementary sulfur, nitrate, water and carbon dioxide.
3, treatment cost is low.The high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses adopts chemistry and biological deodorizing technology, has the characteristics for the treatment of both the principal and secondary aspects of a disease, need not take over the land for use to found the factory or buy bulky equipment, and comprehensive control cost and dynamic investment cost are low, and regulation effect is remarkable.
4, more targeted.The high-efficient deodorant solution for malodorous gas of consumer waste that the present invention discloses can be sprayed directly on the rubbish surface of refuse landfill, garbage transfer station, transfer station, the exposure of its feeding field, eliminates the stench that distributes.
5, the used material of high-efficient deodorant solution for malodorous gas of consumer waste of preparation the present invention announcement is the easy chemical substance of using always, for example, and ferrous sulfate, copper sulfate, magnesium sulfate, potassium dihydrogen phosphate, sodium dihydrogen phosphate and sodium carbonate and metal chelating agent etc.
Four, the specific embodiment
Below by specific embodiment the present invention is further described, but it does not limit protection scope of the present invention.
Embodiment 1
The foul gas that the rubbish that exposes with removal domestic waste terminal, transfer station produces is an example, sets forth the preparation method and the result of use of high-efficient deodorant solution for malodorous gas of consumer waste.Its preparation method mainly comprises following step:
(1) preparation of hydrogen sulfide oxidation catalysis solution
1. with 0.1～1 molar metal chelating agent, for example, ethylenediaminetetraacetic acid (EDTA) or dithiocar-bamate are dissolved in 1～100 premium on currency;
2. the ferrous salt that under agitation slowly adds equivalent, for example, FeSO
47H
2O or iron chloride, ferric nitrate, iron acetate, ferric citrate etc. form light green solution;
3. with air pump bubbling air in above-mentioned solution, promptly get hydrogen sulfide oxidation catalysis solution after making the color of solution change pale red into by light green.
(2) preparation of nitrobacteria culture suspension
1. the preparation of nitrobacteria selective enrichment culture medium
Nitrobacteria selective enrichment culture medium is formulated by following three kinds of solution:
Solution 1 is that one mole magnesium sulfate storing solution, calcium chloride storing solution, 0.5 milliliter of copperas solution (preparing gained with 50 mM EDTA (pH 7.0) solution), 0.02 ml concn that 0.3 ml concn is one mole are that the copper sulfate storing solution and 1200 ml distilled waters of 50 mMs are formed by 4.95 gram ammonium sulfate, 0.62 gram potassium dihydrogen phosphate, 1.1 ml concns.
Solution 2 is made up of 8.2 gram potassium dihydrogen phosphates, 0.7 gram sodium dihydrogen phosphate and 300 ml distilled waters, is 8.0 with 10 molar sodium hydroxides with pH regulator.
Solution 3 is 5% sodium carbonate liquor.
After solution 1 and 2 mixing, add 12 ml solns 3, get nitrobacteria selective enrichment fluid medium.
2. the preparation of nitrobacteria selectivity solid medium
50 ml solns 2 are loaded in 500 milliliters the conical flask, in bottle, add 5 gram agar.After agar is dissolved in heating in boiling water bath, adds 200 milliliters of temperature and be 50 ℃ solution 1 and 2 ml solns 3, mixedly use while hot after evenly (for example, fall dull and stereotyped, make inclined-plane etc.).
3. the selective enrichment of nitrobacteria is cultivated
500 milliliters of nitrobacteria selective enrichment culture fluid are packed in 1000 milliliters of triangular flasks, add 10 milliliters of soil filtrate or 5 gram municipal wastewaters are handled an activated sludge, at 28 ℃ of following aerobic culture.When culture fluid becomes limpid by muddiness, stop aerobic culture during again by limpid changes muddiness.The preparation method of above-mentioned soil filtrate is as follows: the fertile vegetable garden surface soil of 100 grams is suspended in 300 ml tap waters, after fully stirring, promptly gets the soil filtrate with four layers of filtered through gauze.
4. the separation of nitrobacteria
With 0.2 milliliter of warp suitably the above-mentioned nitrobacteria enrichment culture liquid of dilution to coat diameter be on 90 millimeters the nitrobacteria selectivity solid medium flat board.After treating the planar surface liquid dried, counter-rotating is dull and stereotyped, puts in 28 ℃ of incubators and cultivates.When treating that planar surface occurs separating good bacterium colony, stop to cultivate.The bacterium colony big or small, that form is different can appear on the culture medium flat plate.After smear, the dyeing, examine under a microscope and to find the nitrobacteria that comes in every shape.
5. the preservation of nitrobacteria
, from separating plate, the bacterium colony of different shape is transferred to respectively on the nitrobacteria selectivity culture medium slant with inoculating loop, puts in 28 ℃ of incubators and cultivate.After treating to grow plentiful lawn on the inclined-plane, stop cultivating.Number and, put 4 ℃ of refrigerators and preserve with the paraffin sealing inclined-plane mouth of pipe and the tampon that melt.The every three months transferred species once.
6. the preparation of nitrobacteria culture suspension
Volume according to the nitrobacteria culture that will prepare, rise the inoculum concentration that the nitrobacteria culture fluid is inoculated an inoculating loop lawn by each, be inoculated in the nitrobacteria culture fluid with inoculating loop picking lawn from each strain inclined plane, aerobic culture got nitrobacteria culture suspension in 24 hours.
(3) preparation of high-efficient deodorant solution for malodorous gas of consumer waste
Under stirring condition, add above-mentioned hydrogen sulfide oxidation catalysis solution, nitrobacteria culture suspension and water and promptly got high-efficient deodorant solution for malodorous gas of consumer waste behind the ratio uniform mixing in 2: 1: 1.
During use, with the atomized spray equipment of packing into after the clear water dilution, the foul odour that rubbish distributes can be eliminated in the rubbish surface that is sprayed on exposure, and is also capable of purifying air with high-efficient deodorant solution for malodorous gas of consumer waste.
Embodiment 2
The foul gas that produces with removal refuse landfill or its feeding place is an example, sets forth the preparation method and the result of use of high-efficient deodorant solution for malodorous gas of consumer waste.
Preparation method is the same.The high-efficient deodorant solution for malodorous gas of consumer waste for preparing is directly given up widely, sprayed repeatedly in refuse landfill or its feeding field cage with spray pattern after the clear water dilution, produce excellent deodorization effect.
Claims (8)
1, a kind of high-efficient deodorant solution for malodorous gas of consumer waste is characterized in that it being that to make color by a certain percentage behind the uniform mixing by hydrogen sulfide oxidation catalysis solution, nitrobacteria culture suspension and water be dark red to pink high-efficient deodorant solution for malodorous gas of consumer waste.
2, a kind of high-efficient deodorant solution for malodorous gas of consumer waste according to claim 1, after it is characterized in that hydrogen sulfide, ammonia, amine substance, sulfhydryl compound and low-molecular-weight organic acid, ketone and aldehyde etc. in the foul gas are sordes matter and are absorbed by high-efficient deodorant solution for malodorous gas of consumer waste, at hydrogen sulfide oxidation catalysis solution, be present in the nitrobacteria in the nitrobacteria culture suspension and be present under the combined effect of other microorganism on rubbish surface and be transformed into elementary sulfur, nitrate, carbon dioxide and water, realize the elimination of foul gas.
3, hydrogen sulfide oxidation catalysis solution according to claim 1 is characterized in that the complex solution of being made up of iron salt and tetrasodium salt of EDTA or other metal chelating agent.Wherein iron salt is ferrous sulfate or other soluble ferric iron salt, for example, and iron chloride, ferric nitrate, iron acetate, ferric citrate etc.
4, hydrogen sulfide oxidation catalysis solution according to claim 1 is characterized in that utilizing ethylenediaminetetraacetic acid or other metal chelating agent, and for example, dithiocar-bamate waits as complexation/intercalating agent to prevent iron salt hydrolysis.
5, hydrogen sulfide oxidation catalysis solution according to claim 1 is characterized in that: exist in solution iron ion and metal complex/intercalating agent equivalent.
6, nitrobacteria culture suspension according to claim 1, it is characterized in that nitrobacteria is inoculated in the described high resiliency nitrobacteria selective enrichment culture fluid of being made up of inorganic chemistry materials such as ammonium sulfate, potassium dihydrogen phosphate, sodium dihydrogen phosphate, magnesium sulfate, calcium chloride, copper sulfate, ferrous sulfate and sodium carbonate of patent specification, carries out aeration and cultivates the nitrobacteria culture that the back obtains.
7, nitrobacteria according to claim 6 is characterized in that obtaining nitrobacteria enrichment culture thing by continuing to blast a large amount of air in the nitrobacteria selective enrichment culture fluid of having inoculated a soil filtrate or municipal wastewater processing activated sludge.
8, a kind of high-efficient deodorant solution for malodorous gas of consumer waste according to claim 1 is characterized in that described high-efficient deodorant solution for malodorous gas of consumer waste finished product is dark red to the pale red spray.
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| CNA2008101421040A CN101352578A (en) | 2008-08-26 | 2008-08-26 | High-efficient deodorant solution for malodorous gas of consumer waste and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103705960A (en) * | 2014-01-05 | 2014-04-09 | 浙江大学 | Livestock and poultry farm deodorant and application thereof |
| CN103743731A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Sulfuretted hydrogen detection reagent |
| CN107021561A (en) * | 2017-04-07 | 2017-08-08 | 上海野马环保设备工程有限公司 | A kind of biological deodorizing filler for possessing physics, chemistry and bio-cooperation |
| CN107466249A (en) * | 2015-02-19 | 2017-12-12 | 帕奎勒有限责任公司 | The method of gas of the processing comprising hydrogen sulfide and mercaptan |
| CN113149721A (en) * | 2021-02-02 | 2021-07-23 | 陕西科技大学 | Kitchen waste treatment method |
| CN114259848A (en) * | 2021-12-30 | 2022-04-01 | 上海心动能科技有限公司 | Deodorant for removing odor of organic garbage and preparation method and application thereof |
| CN115252863A (en) * | 2022-06-28 | 2022-11-01 | 上海康恒环境修复有限公司 | Deodorant for refuse landfill, preparation method and application thereof |
-
2008
- 2008-08-26 CN CNA2008101421040A patent/CN101352578A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103743731A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Sulfuretted hydrogen detection reagent |
| CN103705960A (en) * | 2014-01-05 | 2014-04-09 | 浙江大学 | Livestock and poultry farm deodorant and application thereof |
| CN107466249A (en) * | 2015-02-19 | 2017-12-12 | 帕奎勒有限责任公司 | The method of gas of the processing comprising hydrogen sulfide and mercaptan |
| CN107466249B (en) * | 2015-02-19 | 2020-09-15 | 帕奎勒有限责任公司 | Method for treating a gas containing hydrogen sulphide and mercaptans |
| CN107021561A (en) * | 2017-04-07 | 2017-08-08 | 上海野马环保设备工程有限公司 | A kind of biological deodorizing filler for possessing physics, chemistry and bio-cooperation |
| CN113149721A (en) * | 2021-02-02 | 2021-07-23 | 陕西科技大学 | Kitchen waste treatment method |
| CN114259848A (en) * | 2021-12-30 | 2022-04-01 | 上海心动能科技有限公司 | Deodorant for removing odor of organic garbage and preparation method and application thereof |
| CN115252863A (en) * | 2022-06-28 | 2022-11-01 | 上海康恒环境修复有限公司 | Deodorant for refuse landfill, preparation method and application thereof |
| CN115252863B (en) * | 2022-06-28 | 2023-10-31 | 上海康恒环境修复有限公司 | Deodorant for landfill site, preparation method and application thereof |
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Open date: 20090128 |