CN104496118A - Method for treating sewage in synthesis ammonia in coal chemical industry - Google Patents
Method for treating sewage in synthesis ammonia in coal chemical industry Download PDFInfo
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Abstract
The invention belongs to the environment-friendly field of sewage treatment and discloses a method for treating sewage in synthesis ammonia in coal chemical industry. The method comprises the following steps: 1) preparing a microbial preparation; 2) precipitating and separating oil; 3) adjusting the pH value; 4) preparing a carbon source; 5) oxidizing microorganisms; and 6) preparing feed proteins. The method disclosed by the invention can be used for effectively removing pollutants in sewage in coal chemical industry, is low in investment cost and can be popularized and used on a large scale.
Description
Technical field
The invention belongs to sewage disposal field of Environment Protection, be specifically related to a kind of method of disposing of sewage in Coal Chemical Industry synthetic ammonia.
Background technology
At present, due to coal low raw-material cost, utilize coal for Material synthesis liquefied ammonia be the selection of most of chemical enterprise.But take coal as the manufacturing enterprise of the synthetic ammonia of raw material, feed coal can discharge a large amount of waste water in gas making, desulfurization, decarburization, refining, ammonia synthesis process.Owing to containing the elements such as carbon, hydrogen, oxygen, nitrogen, sulphur in coal, organic and the mineral compound of various oxygen, nitrogen, sulphur is transformed in retort process, make to contain multiple poisonous and hazardous pollutent in the phlegma of the moisture in coal gas and steam, belong to one of trade effluent of refractory reason.How to remove the ammonia nitrogen in high density in sewage and sulfide, becoming with coal is the technical barrier that the enterprise of the synthetic ammonia of raw material must solve.
Take coal as the manufacturing enterprise of the synthetic ammonia of raw material, the selection of sewage treatment process determines the cost of sewage disposal.In sewage disposal, the method for ammonia nitrogen, sulfide and industrial COD has Physical, chemical method and biological process etc.Physical method has reverse osmosis, distillation, stripping, soil irrigation; Chemical method has ion exchange method, break point chlorination, electrochemical treatment, catalytic pyrolysis; Bioremediation mainly contains activated sludge process and biomembrance process.The basis of conventional activated sludge process develops out kinds of processes again, as AO method, MBR method etc.; Biomembrance process mainly contains biological contact oxidation process, blodisc etc., in the majority to choose biochemical processing method in above method.For a long time, adding of biochemical sewage process carbon source uses methyl alcohol, white sugar (or cerelose) always, and methyl alcohol belongs to harmful influence, in use not only there is very large danger; White sugar cost is higher, and enterprise is generally beyond affordability.
There is following shortcoming in the method that prior art is disposed of sewage: microbial inoculum compatibility is unreasonable, poor processing effect, and cost is higher mostly, and enterprise is difficult to accept.At present, a kind of new processing method is urgently needed to substitute existing method in coal chemical industry sewage process field.
Summary of the invention
The technical issues that need to address of the present invention are, overcome the deficiencies in the prior art part, provide a kind of method of disposing of sewage in Coal Chemical Industry synthetic ammonia, the method can remove ammonia and nitrogen components in sewage and industrial COD effectively, low in input cost, can large-scale promotion use.
The object of the invention is to be achieved through the following technical solutions:
A method of disposing of sewage in Coal Chemical Industry synthetic ammonia, comprises the steps:
Step 1) prepares microbial preparation, step 2) precipitate and oil removal, step 3) regulates potential of hydrogen, and step 4) prepares carbon source, step 5) microbiological oxidation, and step 6) prepares feedstuff protein.
Particularly, described method comprises the steps:
Step 1) prepares microbial preparation: Bacillus licheniformis, Acinetobacter bauamnnii, rhodococcus, Sphingol single-cell and Pseudomonas fluorescens being trained respectively concentration is 1 × 10
8the bacterium liquid of individual/ml, mixes according to the volume ratio of 1:1:2:3:3, then with carrier according to the quality of 1:1 than mixing and stirring, finally carry out cryodrying, drying temperature is 20-30 DEG C, and after dry, water content is 10%, to obtain final product;
Step 2) precipitate and oil removal: sewage is cooled to 20-30 DEG C, then enters settling tank, sedimentation time is 12 hours, finally enters oil trap, removes petroleum substance;
Step 3) regulates potential of hydrogen: sewage enters acid-alkali accommodation pond, adds the hydrochloric acid of 1M in acid-alkali accommodation pond, and the pH regulating sewage is 7.0-7.5;
Step 4) prepares carbon source: dried by agricultural crop straw, is ground into straw powder with pulverizer, adds in fermentor tank, then adds dregs of beans and water, after the speed of 500 revs/min stirs 30 minutes, leaves standstill 24 hours, obtained microorganism organic carbon source; Described fermentation jar temperature controls at 70-80 DEG C; The mass ratio of straw powder, dregs of beans and water is 3:2:5;
Step 5) microbiological oxidation: add 10 grams of microbial preparations and 20g carbon source according to every cubic metre of liquid at every turn, add 1 every day, after adding three days continuously, then is left standstill one week, is filtered by liquid, finally discharge by plate filter; Meanwhile, microorganism and the tunning thereof of sheet frame metre filter is collected;
Step 6) prepares feedstuff protein: step 5) gained microorganism and tunning thereof are added stirred reactor, and add appropriate warm water and mix well, adjustment solid content is 8%(w/w) mixed solution, the temperature of adjustment mixed solution is 55 DEG C, adjustment pH is 4-5, then adds N,O-Diacetylmuramidase 5kg/m
3with aspartic protease 10kg/m
3, enzymolysis time is 6 hours; 100 DEG C of enzyme 3min that go out, last spray granulating and drying obtains feedstuff protein.
Preferably,
Described carrier is that diatomite and chitosan mix obtained according to the mass ratio of 1:1.
Described Bacillus licheniformis (Bacillus licheniformis) is CCTCC NO.M206082;
Described Acinetobacter bauamnnii (Acinetobacter baumanii) is ATCC 19606;
Described rhodococcus (Rhodococcus rhodochrous) is ATCC 15906;
Described Sphingol single-cell (Sphingomonas sp.) is CGMCC NO.4589;
Described Pseudomonas fluorescens (P.Fluorescens) is ATCC49642.
The fine sand of 1 meter of thickness is laid bottom described settling tank.
Described farm crop are Chinese sorghum or corn.
The enzyme work of described N,O-Diacetylmuramidase is 20,000 U/mg, and the enzyme work of described aspartic protease is 8000 U/mg.
Bacterial classification of the present invention all can be bought from commercial channel such as CGMCC, CCTCC and American Type Culture collection warehousings (ATCC) and obtain.
The enlarged culturing method of microorganism of the present invention can record according to document or the record of prior art is carried out, and is not innovative point of the present invention herein, as space is limited, does not repeat one by one.
The beneficial effect that the present invention obtains is main but be not limited to the following aspects:
Microbial preparation of the present invention is by the various bacterial classification that can form dominant microflora, be mixed with high-efficiency microorganism preparation, be added in Waste Water Treatment by a certain amount of, accelerate the degraded of microbe, to improve the biological treatment efficiency of system, ensure system stable operation;
Reasonable compatibility between each bacterial classification of microbial preparation of the present invention, symbiosis is coordinated, mutually not antagonism, and active high, biomass is large, and breeding is fast;
Composite fungus agent of the present invention is suitable for coal chemical industry sewage process, can improve the process water yield and water quality treatment, reduces working cost, promotes qualified discharge;
The present invention adjusts pH by hydrochloric acid, generates ammonium chloride with the ammonia in sewage, can be used as microorganism nitrogenous source, kills two birds with one stone;
The present invention has prepared microbe carbon source by agricultural wastes, and low price is easily accepted by enterprise;
The present invention's feed albumen that utilized waste microbial to prepare, protein content is high, achieves and turns waste into wealth.
Embodiment
Technical scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the application's specific embodiment, the technical scheme of the application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, should belong to the scope of protection of the invention.
Embodiment 1
A method of disposing of sewage in Coal Chemical Industry synthetic ammonia, it comprises the steps:
Step 1) prepares microbial preparation, step 2) precipitate and oil removal, step 3) regulates potential of hydrogen, and step 4) prepares carbon source, step 5) microbiological oxidation, and step 6) prepares feedstuff protein;
Particularly, comprise the steps:
Step 1) prepares microbial preparation: Bacillus licheniformis, Acinetobacter bauamnnii, rhodococcus, Sphingol single-cell and Pseudomonas fluorescens being trained respectively concentration is 1 × 10
8the bacterium liquid of individual/ml, mixes according to the volume ratio of 1:1:2:3:3, then with carrier according to the quality of 1:1 than mixing and stirring, finally carry out cryodrying, drying temperature is 30 DEG C, and after dry, water content is 10%; Obtain; Described carrier is that diatomite and chitosan mix obtained according to the mass ratio of 1:1;
Step 2) precipitate and oil removal: sewage is cooled to 20 DEG C, then enters settling tank, sedimentation time is 12 hours, finally enters oil trap, removes petroleum substance;
Step 3) regulates potential of hydrogen: sewage enters acid-alkali accommodation pond, adds the hydrochloric acid of 1M in equalizing tank, and the pH regulating sewage is 7.0;
Step 4) prepares carbon source: dried by agricultural crop straw, is then ground into straw powder with pulverizer, adds in fermentor tank, then adds dregs of beans and water, after the speed of 500 revs/min stirs 30 minutes, leaves standstill 24 hours, obtained microorganism organic carbon source; Fermentation jar temperature controls at 70 DEG C; The mass ratio of straw powder, dregs of beans and water is 3:2:5; Described farm crop are Chinese sorghum;
Step 5) microbiological oxidation: add 10 grams of microbial preparations and 20g carbon source according to every cubic metre of liquid at every turn, add 1 every day, after adding three days continuously, then is left standstill one week, is filtered by liquid, finally discharge by plate filter; Meanwhile, microorganism and the tunning thereof of the filtration of plate filter is collected;
Step 6) prepares feedstuff protein: microorganism and tunning thereof are added stirred reactor, and adds appropriate warm water and mix well, adjustment solid content 8%(w/w) mixed solution, the temperature of adjustment mixed solution is 55 DEG C, and pH is 4, adds N,O-Diacetylmuramidase 5kg/m respectively
3, aspartic protease 10Kg/m
3, enzymolysis time is 6 hours, and stirring velocity is 100 turns/min; 100 DEG C of enzyme 3min that go out, last spray granulating and drying obtains feedstuff protein; Wherein, the enzyme work of N,O-Diacetylmuramidase is 20,000 U/mg, and the enzyme work of aspartic protease is 8000 U/mg.After testing, protein content can reach 42%.
Embodiment 2
A method of disposing of sewage in Coal Chemical Industry synthetic ammonia, it comprises the steps:
Step 1) prepares microbial preparation, step 2) precipitate and oil removal, step 3) regulates potential of hydrogen, and step 4) prepares carbon source, step 5) microbiological oxidation, and step 6) prepares feedstuff protein;
Particularly, comprise the steps:
Step 1) prepares microbial preparation: Bacillus licheniformis, Acinetobacter bauamnnii, rhodococcus, Sphingol single-cell and Pseudomonas fluorescens being trained respectively concentration is 1 × 10
8the bacterium liquid of individual/ml, mixes according to the volume ratio of 1:1:2:3:3, then with carrier according to the quality of 1:1 than mixing and stirring, finally carry out cryodrying, drying temperature is 30 DEG C, and after dry, water content is 10%; Obtain; Described carrier is that diatomite and chitosan mix obtained according to the mass ratio of 1:1;
Described Bacillus licheniformis (Bacillus licheniformis) is CCTCC NO.M206082(CN101037659A);
Described Acinetobacter bauamnnii (Acinetobacter baumanii) is ATCC 19606(Infect Immun. 2012 Mar; 80 (3): 1015-24)
Described rhodococcus (Rhodococcus rhodochrous) is ATCC 15906; (J. Bacteriol. November 2001);
Described Sphingol single-cell (Sphingomonas sp.) is CGMCC NO.4589(CN102168054A);
Described Pseudomonas fluorescens (P.Fluorescens) is ATCC49642(WO2003066873A1)
Step 2) precipitate and oil removal: sewage is cooled to 30 DEG C, then enters settling tank, sedimentation time is 12 hours, finally enters oil trap, removes petroleum substance; The fine sand of 1 meter of thickness is laid bottom settling tank;
Step 3) regulates potential of hydrogen: sewage enters acid-alkali accommodation pond, adds the hydrochloric acid of 1M in equalizing tank, and the pH regulating sewage is 7.5;
Step 4) prepares carbon source: dried by agricultural crop straw, is then ground into straw powder with pulverizer, adds in fermentor tank, then adds dregs of beans and water, after the speed of 500 revs/min stirs 30 minutes, leaves standstill 24 hours, obtained microorganism organic carbon source; Fermentation jar temperature controls at 80 DEG C; The mass ratio of straw powder, dregs of beans and water is 3:2:5; Described farm crop are corn;
Step 5) microbiological oxidation: add 10 grams of microbial preparations and 20g carbon source according to every cubic metre of liquid at every turn, add 1 every day, after adding three days continuously, then is left standstill one week, is filtered by liquid, finally discharge by plate filter; Meanwhile, microorganism and the tunning thereof of the filtration of plate filter is collected;
Step 6) prepares feedstuff protein: microorganism and tunning thereof are added stirred reactor, and adds appropriate warm water and mix well, adjustment solid content 8%(w/w) mixed solution, the temperature of adjustment mixed solution is 55 DEG C, and pH is 5, adds N,O-Diacetylmuramidase 5kg/m respectively
3, aspartic protease 10Kg/m
3, enzymolysis time is 6 hours, and stirring velocity is 100 turns/min; 100 DEG C of enzyme 3min that go out, last spray granulating and drying obtains feedstuff protein; Wherein, the enzyme work of N,O-Diacetylmuramidase is 20,000 U/mg, and the enzyme work of aspartic protease is 8000 U/mg.After testing, protein content can reach 43%.
Embodiment 3
With our company's coal chemical industry sewage for example, detect the wastewater treatment efficiency of embodiment 2, each index all reaches desirable emission standard, and the Testing index of sewage is in table 1:
Table 1
| Before process (mg/L) | After process (mg/L) | Clearance (%) | |
| COD | 1059.3 | 19.1 | 98.2％ |
| NH3-N | 325.7 | 6.9 | 97.9％ |
| Sulfide | 56.2 | 2.6 | 95.4% |
Although above done detailed explanation with general explanation and embodiment to this case, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, amendment done without departing from theon the basis of the spirit of the present invention or improvement, all belong to the scope of protection of present invention.
Claims (7)
1. the method for disposing of sewage in Coal Chemical Industry synthetic ammonia, is characterized in that, described method comprises the steps:
Step 1) prepares microbial preparation, step 2) precipitate and oil removal, step 3) regulates potential of hydrogen, and step 4) prepares carbon source, step 5) microbiological oxidation, and step 6) prepares feedstuff protein.
2. method according to claim 1, is characterized in that, described method comprises the steps:
Step 1) prepares microbial preparation: Bacillus licheniformis, Acinetobacter bauamnnii, rhodococcus, Sphingol single-cell and Pseudomonas fluorescens being trained respectively concentration is 1 × 10
8the bacterium liquid of individual/ml, mixes according to the volume ratio of 1:1:2:3:3, then with carrier according to the quality of 1:1 than mixing and stirring, finally carry out cryodrying, drying temperature is 20-30 DEG C, and after dry, water content is 10%, to obtain final product;
Step 2) precipitate and oil removal: sewage is cooled to 20-30 DEG C, then enters settling tank, sedimentation time is 12 hours, finally enters oil trap, removes petroleum substance;
Step 3) regulate potential of hydrogen: step 2) sewage enter acid-alkali accommodation pond, toward acid-alkali accommodation pond in, add the hydrochloric acid of 1M, adjustment sewage pH be 7.0-7.5;
Step 4) prepares carbon source: dried by agricultural crop straw, is ground into straw powder with pulverizer, adds in fermentor tank, then adds dregs of beans and water, after the speed of 500 revs/min stirs 30 minutes, leaves standstill 24 hours, obtained microorganism organic carbon source; Described fermentation jar temperature controls at 70-80 DEG C; The mass ratio of straw powder, dregs of beans and water is 3:2:5;
Step 5) microbiological oxidation: add 10 grams of microbial preparations and 20g carbon source according to every cubic metre of sewage at every turn, add 1 every day, after adding three days continuously, then is left standstill one week, is filtered by liquid, finally discharge by plate filter; Meanwhile, microorganism and the tunning thereof of sheet frame metre filter is collected;
Step 6) prepares feedstuff protein: step 5) gained microorganism and tunning thereof are added stirred reactor, and add appropriate warm water and mix well, adjustment solid content is 8%(w/w) mixed solution, the temperature of adjustment mixed solution is 55 DEG C, adjustment pH is 4-5, then adds N,O-Diacetylmuramidase 5kg/m
3with aspartic protease 10kg/m
3, enzymolysis time is 6 hours; 100 DEG C of enzyme 3min that go out, last spray granulating and drying obtains feedstuff protein.
3. method according to claim 2, is characterized in that, described carrier is that diatomite and chitosan mix obtained according to the mass ratio of 1:1.
4. according to the method in claim 2 or 3, it is characterized in that,
Described Bacillus licheniformis (Bacillus licheniformis) is CCTCC NO.M206082;
Described Acinetobacter bauamnnii (Acinetobacter baumanii) is ATCC 19606;
Described rhodococcus (Rhodococcus rhodochrous) is ATCC 15906;
Described Sphingol single-cell (Sphingomonas sp.) is CGMCC NO.4589;
Described Pseudomonas fluorescens (P.Fluorescens) is ATCC49642.
5. method according to claim 4, is characterized in that, lays the fine sand of 1 meter of thickness bottom described settling tank.
6. method according to claim 4, is characterized in that, described farm crop are Chinese sorghum or corn.
7. method according to claim 4, is characterized in that, the enzyme work of described N,O-Diacetylmuramidase is 20,000 U/mg, and the enzyme work of described aspartic protease is 8000 U/mg.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105036351A (en) * | 2015-06-25 | 2015-11-11 | 内蒙古阜丰生物科技有限公司 | Biological agent composition for treatment of threonine fermentation wastewater |
| CN105668807A (en) * | 2016-03-01 | 2016-06-15 | 云南圣清环保科技有限公司 | Method adopting microorganisms for treating coal chemical industrial wastewater |
| CN106964647A (en) * | 2017-06-06 | 2017-07-21 | 临沂大学 | A kind of method of utilization composite bacteria agent remediating lead-contaminated soil |
| CN106987547A (en) * | 2017-06-09 | 2017-07-28 | 重庆大学 | One plant of Acinetobacter bauamnnii and its application |
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| CN101148293A (en) * | 2006-09-21 | 2008-03-26 | 江苏博大环保股份有限公司 | Microorganism advanced treatment for oil refining waste water |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105036351A (en) * | 2015-06-25 | 2015-11-11 | 内蒙古阜丰生物科技有限公司 | Biological agent composition for treatment of threonine fermentation wastewater |
| CN105036351B (en) * | 2015-06-25 | 2017-01-25 | 内蒙古阜丰生物科技有限公司 | Biological agent composition for treatment of threonine fermentation wastewater |
| CN105668807A (en) * | 2016-03-01 | 2016-06-15 | 云南圣清环保科技有限公司 | Method adopting microorganisms for treating coal chemical industrial wastewater |
| CN106964647A (en) * | 2017-06-06 | 2017-07-21 | 临沂大学 | A kind of method of utilization composite bacteria agent remediating lead-contaminated soil |
| CN106987547A (en) * | 2017-06-09 | 2017-07-28 | 重庆大学 | One plant of Acinetobacter bauamnnii and its application |
| CN106987547B (en) * | 2017-06-09 | 2020-01-03 | 重庆大学 | Acinetobacter baumannii and application thereof |
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