CN106554076A - A kind of bioremediation of ammonia-containing water - Google Patents
A kind of bioremediation of ammonia-containing water Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a kind of bioremediation of ammonia-containing water, including using activated sludge as carrier, under the conditions of MLSS is 1000～2000mg/L adds microbial growth promoters, controls DO for 2.0～4.0mg/L；Denitrification microorganism microbial inoculum and microbial growth promoters are added when ammonia nitrogen removal frank reaches 50%～70%, while reducing DO to 1.0～2.0mg/L；When ammonia nitrogen removal frank is up to more than 80%, DO to 0.1～1.0mg/L is reduced；The microbial growth promoters include slaine and polyamines, and wherein slaine is 40～100 weight portions, and polyamines are 5～30 weight portions, and the slaine is made up of calcium salt, mantoquita, magnesium salt and/or ferrous salt.The present invention is by adding denitrification microorganism microbial inoculum and specified microorganisms growth promoter in processing system, and with reference to the control of dissolved oxygen concentration, the efficient removal of ammonia nitrogen, total nitrogen in same reactor can not only be realized, additionally it is possible to efficiently remove the hardly degraded organic substance in waste water, improve effluent quality.
Description
Technical field
The invention belongs to technical field of biological treatment of wastewater, and in particular to a kind of bioremediation of ammonia-containing water.
Background technology
As the aggravation and the continuous enhancing of Public environmental attitude of nitrate pollution, requirement of the society to environment are increasingly improved, the restriction to ammonia nitrogen pollutant in efflux wastewater is stricter at present.Country's newly promulgation in 2002《Urban wastewater treatment firm pollutant emission standard》Higher ammonia nitrogen discharge standard is proposed then（≤ 8mg/L, if reuse≤5mg/L）.Ammonia nitrogen is classified as into one of overall control index in " 12 " planning, while tightened up total nitrogen control standard is formulated in part industry and place successively.Therefore, solve the problems, such as that ammonia and nitrogen pollution has become the vital task of environmentally friendly scientific and technical research.
Biological denitrificaion is to solve one of relatively inexpensive effective method of nitrate pollution.Either traditional microorganism attached type wastewater treatment structures or high-performance bio film processing system newly developed, the microorganism for being responsible for denitrogenation are mainly Autotrophic nitrification bacterium.The growth rate of autotrophic bacteria itself is slow, in the activated Sludge System of mixed culture cannot cause that autotrophic microbe denitrification system impact resistance is weak, Nitrification is incomplete, nitrogen removal rate is low with heterotrophic bacteria competition, to be difficult to obtain higher Biomass, nitrification efficiency low.So some new, more preferable denitrification microorganisms of effect, such as allotrophic nitrobacteria, aerobic denitrifying bacteria, anaerobic ammonium oxidizing bacteria etc. is found in succession.
Allotrophic nitrobacteria fast growth, cell yield are high, require that dissolved oxygen concentration is low, also strong to the adaptability of environment, compared with autotrophic type nitrifier, although the speed ratio autotrophic bacteria of the heterotrophic bacteria oxidation ammonium salt of biomass is slow, the speed of the oxidation ammonium salt of its totality is slow unlike autotrophic bacteria.Some heterotrophic microorganisms under conditions of organic carbon source is lacked, can carry out the oxidation of ammonia and obtain the energy needed for growth, it is also possible to carry out ammoxidation under conditions of Organic substance is present, do not obtain energy, be a kind of metabolic process, the oxidation of ammonia is not limited by Organic substance.Therefore allotrophic nitrobacteria receives much attention as a kind of new denitrification microorganism.Domestic and international researcher is conducted extensive research at the aspect such as Heterotrophic nitrifier screening, functional metabolism approach, enzyme and gene, but still only rest on the laboratory research stage at present, the example for being really applied in Practical Project process waste water by nitrification bacteria is actually rare.
CN101302485A discloses a kind of heterotrophic nitrification microbial preparation, its cultural method and purposes, and the microbial inoculum contains germ oligotrophy unit cell（Stenotrophomonas maltophiliastrain DN 1.1）And pseudomonas putida（Pseudomonas putida strain DN
1.2）, the microbial inoculum can effectively remove ammonia nitrogen and total nitrogen in water body, can also remove the COD in organic wastewater simultaneously, it is adaptable to high-concentration culture waste water process.When it is the piggery wastewater of 455～600mg/L to process ammonia nitrogen concentration, to 94～95h, to the clearance of ammonia nitrogen in waste water up to 87%～88%, it is 59～72mg/L to process water outlet ammonia-nitrogen content to the microbial inoculum for experiment operation；The total nitrogen of water inlet 790mg/L can be processed to 164mg/L after processing 95h, nitrogen removal rate is 79.2%.CN200910021020.7 discloses a kind of preparation method of the water quality modifying microecological preparation of drop ammonia nitrogen and cultured water, is related to one plant of arthrobacterium CGMCC in the microbial inoculum
No.1282, but the microbial ecological agent of the invention belongs to aquaculture technology and ecological environmental protection technical field.CN201210130644.3 discloses a kind of Salt-tolerant microbial agent and preparation method thereof, and the microbial bacterial agent contains staphylococcus cohnii FSDN-C, arthrobacterium FDN-1, Shui Shi Flavobacterium FDN-2, Paracoccus denitrificans DN-3 and Methylobacterium SDN-3.CN201210130645.8 discloses a kind of wastewater treatment microbial microbial inoculum and preparation method thereof, and the microbial bacterial agent contains marsh Calco Salmonella FSDN-A, arthrobacterium FDN-1, Shui Shi Flavobacterium FDN-2, Paracoccus denitrificans DN-3 and Methylobacterium SDN-3.But, the involved microbial bacterial agent of above invention is primarily adapted for use in the waste water processed containing low COD and good biodegradability, has no its effect when the ammonia-containing water containing persistent organic pollutants is processed.
The content of the invention
For the problem that prior art is present, the present invention provides a kind of bioremediation of ammonia-containing water.The present invention is by adding denitrification microorganism microbial inoculum and specific microbial growth promoters in processing system, and with reference to the control of dissolved oxygen concentration, the efficient removal of ammonia nitrogen, total nitrogen in same reactor can not only be realized, additionally it is possible to remove the persistent organic pollutants in waste water, improve effluent quality.
The bioremediation of ammonia-containing water of the present invention, including following content：（1）Using sludge sewage as microbe carrier, in sludge concentration（MLSS）For microbial growth promoters are added under the conditions of 1000～2000mg/L, dissolved oxygen concentration is controlled（DO）For 2.0～4.0mg/L, preferably 2.0～3.0mg/L；（2）Denitrification microorganism microbial inoculum and microbial growth promoters are added when ammonia nitrogen removal frank reaches 50%～70%, while dissolved oxygen concentration is reduced to 1.0～2.0mg/L, preferably 1.0～1.5mg/L；（3）When ammonia nitrogen removal frank reaches more than 80%, dissolved oxygen concentration is reduced to 0.1～1.0mg/L, preferably 0.1～0.5mg/L；Described microbial growth promoters include slaine and polyamines, and wherein slaine is 40～100 weight portions, preferably 50～80 weight portions, and polyamines are 5～30 weight portions, preferably 10～20 weight portions；Described slaine is made up of calcium salt, mantoquita, magnesium salt and/or ferrous salt.
Slaine in microbial growth promoters of the present invention can be calcium salt, magnesium salt and mantoquita and/or ferrous salt, wherein Ca2+、Mg2+And Cu2+Mol ratio be（5～15）:（5～25）:（0.5～5）, preferably（8～12）:（10～20）:（1～4）；Or calcium salt, ferrous salt and mantoquita, wherein Ca2+、Fe2+And Cu2+Mol ratio be（5～15）:（1～8）:（0.5～5）, preferably（8～12）:（2～6）:（1～4）；Or calcium salt, magnesium salt, ferrous salt and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Mol ratio be（5～15）:（5～25）:（1～8）:（0.5～5）, preferably（8～12）:（10～20）:（2～6）:（1～4）.
Calcium salt in microbial growth promoters of the present invention is CaSO4Or CaCl2, preferred CaSO4；Magnesium salt is MgSO4Or Mg Cl2, preferred MgSO4；Ferrous salt is FeSO4Or FeCl2, preferred FeSO4；Mantoquita is CuSO4Or CuCl2, preferred CuSO4.Polyamines in the microbial growth promoters are the mixture of spermine, spermidine or both.
Microbial growth promoters of the present invention can also include mineral acid azanol, content be 0.5～15 weight portion, preferably 2～10 weight portions.The mineral acid azanol is one or more in oxammonium hydrochloride., oxammonium sulfate. or phosphatic hydroxylamine, preferably oxammonium sulfate..The appropriate addition of mineral acid azanol can directly participate in the metabolic process of nitrobacteria, shorten enzymatic reaction process, while can be with accelerated cell growth as the activator of cell as the substrate of azanol oxygen also enzyme.
Step of the present invention（1）The dosage of middle microbial growth promoters is added according to 10～40mg/L of promoter concentration in sewage disposal system, and preferably 20～30mg/L is added.
Step of the present invention（1）Sludge sewage can come from Waste water treatment factory, Catalyst sewage treatment plant or municipal wastewater treatment plant etc..The activated sludge of sewage treatment plant is thrown in newly-started system first in sewage treatment structure, activated sludge consumption is to add by 1000～2000mg/L.Accelerator is added after the vexed exposure suitable time of activated sludge, DO is controlled in 3.0～5.0mg/L during vexed exposure, general vexed exposure 24～168 hours.For the system being currently running, can be by adding accelerator under conditions of 1000～2000mg/L of sludge concentration in regulating system.
Step of the present invention（2）The denitrification microorganism microbial inoculum for using be it is existing all there is the microbial inoculum of nitrogen removal performance.Preferably use containing arthrobacterium（Arthrobacter creatinolyticus）FDN-1 and Shui Shi Flavobacteriums（Flavobacterium mizutaii）One or two in FDN-2, Paracoccus denitrificans (Paracoccus denitrificans) DN-3 and Methylobacterium (Methylobacterium phyllosphaerae)
One or two in SDN-3, simultaneously containing marsh Calco Salmonella（Kocuria palustris）FSDN-A and staphylococcus cohnii (Staphylococcus cohnii）FSDN-C, six kinds of bacterial strains are the bacterial strain described in CN102465105, CN102465106, CN102465104, CN102465103, CN103103141, CN103103142.
Step of the present invention（2）In microbial inoculum is added according to the 0.001%～0.01% of handled wastewater volume per hour into system daily, microbial growth promoters are added while adding microbial inoculum, the dosage of microbial growth promoters is added according to 5～25mg/L of promoter concentration in sewage disposal system, and preferably 10～20mg/L is added.
In the present invention, in handled waste water, ammonia nitrogen concentration is 30～400mg/L, and COD is 600～2000mg/L（Cr methods, it is as follows）, BOD is 100～500mg/L, and in controlling wastewater treatment process, temperature is 20～40 DEG C, and pH is 7.0～9.0.
The present invention is according to denitrification microorganism growth characteristics and the difference of Nitrogen Removal Mechanism, by denitrification microorganism microbial inoculum and specific microbial growth promoters are added in processing system, and by regulating and controlling the dissolved oxygen concentration of system for handling difference nitrogen removal stage, strengthen the synergism between different microorganisms, adverse effect between eliminating, the efficient removal of ammonia nitrogen, total nitrogen in same reactor can not only be realized, additionally it is possible to remove the persistent organic pollutants in waste water, improve effluent quality.
Present invention cooperation while microbial inoculum is added adds microbial growth promoters, added microbial inoculum is quickly combined with activated sludge, so that denitrification microorganism is under the collective effect of slaine, polyamines and mineral acid azanol in activated sludge, realize the fast breeding of cell, with fast degradation substrate, the denitrification rates of whole system can be improved.Using cooperatively for the different microorganism and growth promoter, can substantially reduce the dosage of microbial inoculum, improve adaptability of the microbial inoculum to environment, and maintenance system is run steadily in the long term.
Specific embodiment
The present invention program is described in detail with reference to specific embodiment.The present invention adds the microbial growth promoters and denitrification microorganism microbial inoculum of different compositions and proportioning in biological wastewater treatment, used in waste water treatment plant's activated sludge being directly added to, it is also possible to the waste water containing ammonia nitrogen and persistent organic pollutants is processed in suitable biochemical reactor.
The ratio and formula for being first according to 1 nitrobacteria growth promoter of table prepares metal salt solution, polyamines and mineral acid azanol is being added in metal salt solution using front, is preparing growth promoter I-IV, and the promoter concentration is 0.5g/L.
The formula and ratio of 1 growth promoter of table
Denitrification microorganism microbial inoculum used in the present invention can adopt microbial inoculum E, F prepared by the microbial inoculum A-D and embodiment 6 of the preparation of embodiment 1 in patent CN201410731313.4.
Embodiment 1
A kind of waste water containing hardly degraded organic substance and ammonia nitrogen, water quality characteristic can be produced in certain oil plant catalyst production process：PH9.2, COD are 900mg/L, and BOD is 100mg/L, ammonia nitrogen 137mg/L.In system During Process of Long-term Operation, ammonia nitrogen removal effect is poor, causes total nitrogen concentration to be up to 152mg/L, and the SVI of activated sludge is more than 200mL/g, and settling property is poor.
Processed according to the method for the invention, the sludge concentration for adjusting system for handling is 1000mg/L.Microbial growth promoters I are added for 25mg/L according to the concentration of system for handling internal accelerator, DO is 3.0mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 50%, liquid bacterial suspension A is added into system according to the 0.008% of handled wastewater volume per hour daily, and microbial growth promoters I are added for 15mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.5mg/L or so.When ammonia nitrogen removal frank is more than 80%, DO is controlled, in 0.5mg/L or so, to throw in 15 days altogether.Wastewater processing temperatures are controlled for 30 DEG C, pH is 7.5.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Embodiment 2
Process with 1 identical waste water of embodiment, the sludge concentration of regulation system for handling is 1500mg/L.Microbial growth promoters II are added for 20mg/L according to the concentration of system for handling internal accelerator, DO is 2.5mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 70%, liquid bacteria suspension B is added into system according to the 0.005% of handled wastewater volume per hour daily, and microbial growth promoters II are added for 20mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.5mg/L or so.When ammonia nitrogen removal frank is more than 85%, DO is controlled, in 0.4mg/L or so, to throw in 15 days altogether.Sewage disposal temperature is 25 DEG C, and pH is 8.5.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Embodiment 3
Certain contains the wastewater from chemical industry of persistent organic pollutants, and water quality characteristic is：COD is 2000mg/L or so, and BOD is 450mg/L or so, and ammonia nitrogen is 150mg/L or so, and pH is 8.7.After being processed using conventional activated sludge method processing technique, water outlet COD is still up to 300mg/L or so, and ammonia nitrogen is still up to 200mg/L, and total nitrogen is up to 250mg/L.
Processed according to the method described in the present invention, the sludge concentration for adjusting system for handling is 2000mg/L.Microbial growth promoters III are added for 25mg/L according to the concentration of system for handling internal accelerator, DO is 2.0mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 60%, liquid bacteria suspension C is added into system according to the 0.008% of handled wastewater volume per hour daily, and microbial growth promoters III are added for 20mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.0mg/L or so.When ammonia nitrogen removal frank is more than 90%, DO is controlled, in 0.3mg/L or so, to throw in 15 days altogether.Sewage disposal temperature is 30 DEG C, and pH is 8.0.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Embodiment 4
Process with 3 identical waste water of embodiment, the sludge concentration of regulation system for handling is 1500mg/L.Microbial growth promoters IV are added for 30mg/L according to the concentration of system for handling internal accelerator, DO is 2.5mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 60%, liquid bacteria suspension D is added into system according to the 0.01% of handled wastewater volume per hour daily, and microbial growth promoters IV are added for 15mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.0mg/L or so.When ammonia nitrogen removal frank is more than 80%, DO is controlled, in 0.2mg/L or so, to throw in 15 days altogether.Sewage disposal temperature is 25 DEG C, and pH is 7.8.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Embodiment 5
Process with 3 identical waste water of embodiment, the sludge concentration of regulation system for handling is 2000mg/L.Microbial growth promoters III are added for 25mg/L according to the concentration of system for handling internal accelerator, DO is 2.0mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 60%, liquid bacteria suspension E is added into system according to the 0.005% of handled wastewater volume per hour daily, and microbial growth promoters III are added for 20mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.0mg/L or so.When ammonia nitrogen removal frank is more than 90%, DO is controlled, in 0.3mg/L or so, to throw in 15 days altogether.Sewage disposal temperature is 30 DEG C, and pH is 8.0.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Embodiment 6
Process with 3 identical waste water of embodiment, the sludge concentration of regulation system for handling is 1500mg/L.Microbial growth promoters IV are added for 30mg/L according to the concentration of system for handling internal accelerator, DO is 2.5mg/L or so in initial period control system.When ammonia nitrogen removal frank is more than 60%, liquid bacteria suspension F is added into system according to the 0.005% of handled wastewater volume per hour daily, and microbial growth promoters IV are added for 15mg/L according to reaction system internal accelerator concentration, while DO is controlled in 1.0mg/L or so.When ammonia nitrogen removal frank is more than 80%, DO is controlled, in 0.2mg/L or so, to throw in 15 days altogether.Sewage disposal temperature is 25 DEG C, and pH is 7.8.SVI in detecting system is less than 200mL/g, and water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month the results are shown in Table 2.
Comparative example 1
, with embodiment 1, difference is for handling process and process conditions：Microbial growth promoters are not added.Water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month, the results are shown in Table 2.
Comparative example 2
, with embodiment 1, difference is for handling process and process conditions：Denitrification microorganism microbial inoculum is not added.Water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month, the results are shown in Table 2.
Comparative example 3
, with embodiment 1, difference is for handling process and process conditions：Control dissolved oxygen concentration is always 2.5mg/L.Water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month, the results are shown in Table 2.
Comparative example 4
, with embodiment 1, difference is for handling process and process conditions：Control dissolved oxygen concentration is always 0.5mg/L.Water outlet ammonia nitrogen, total nitrogen, COD after operation post analysis process in month, the results are shown in Table 2.
The treatment effect of 2 different embodiments of table and comparative example
When as shown in Table 2, using method of the present invention ammonia-containing water of the process containing persistent organic pollutants, preferable treatment effect is obtained, and the dosage of microbial inoculum is relatively low.
Claims (11)
1. a kind of bioremediation of ammonia-containing water, it is characterised in that including following content：Using sludge sewage as microbe carrier, microbial growth promoters are added under the conditions of sludge concentration is 1000～2000mg/L, control dissolved oxygen concentration for 2.0～4.0mg/L in initial period；Denitrification microorganism microbial inoculum and microbial growth promoters are added when ammonia nitrogen removal frank reaches 50%～70%, while dissolved oxygen concentration is reduced to 1.0～2.0mg/L；When ammonia nitrogen removal frank reaches more than 80%, dissolved oxygen concentration is reduced to 0.1～1.0mg/L；Described microbial growth promoters include slaine and polyamines, and wherein slaine is 40～100 weight portions, and polyamines are 5～30 weight portions；Described slaine is made up of calcium salt, mantoquita, magnesium salt and/or ferrous salt.
2. method according to claim 1, it is characterised in that：Slaine in the growth promoter is calcium salt, magnesium salt and mantoquita, wherein Ca2+、Mg2+And Cu2+Mol ratio be（5～15）:（5～25）:（0.5～5）；Or calcium salt, ferrous salt and mantoquita, wherein Ca2+、Fe2+And Cu2+Mol ratio be（5～15）:（1～8）:（0.5～5）；Or calcium salt, magnesium salt, ferrous salt and mantoquita, wherein Ca2+、Mg2+、Fe2+And Cu2+Mol ratio be（5～15）:（5～25）:（1～8）:（0.5～5）.
3. method according to claim 1 and 2, it is characterised in that：Calcium salt in the growth promoter is CaSO4Or CaCl2, magnesium salt is MgSO4Or Mg Cl2, ferrous salt is FeSO4Or FeCl2, mantoquita is CuSO4Or CuCl2。
4. method according to claim 1, it is characterised in that：Polyamines in the growth promoter are the mixture of spermine, spermidine or both.
5. method according to claim 1, it is characterised in that：Also include mineral acid azanol in the growth promoter, content is 0.5～15 weight portion.
6. method according to claim 5, it is characterised in that：The mineral acid azanol is one or more in oxammonium hydrochloride., oxammonium sulfate. or phosphatic hydroxylamine, and content is 2～10 weight portions.
7. method according to claim 1, it is characterised in that：The dosage of initial period microbial growth promoters is added according to 10～40mg/L of promoter concentration in sewage disposal system.
8. method according to claim 1, it is characterised in that：Sludge sewage can come from Waste water treatment factory, Catalyst sewage treatment plant or municipal sewage plant.
9. method according to claim 1, it is characterised in that：Denitrification microorganism microbial inoculum contains arthrobacterium（Arthrobacter creatinolyticus）FDN-1 and Shui Shi Flavobacteriums（Flavobacterium mizutaii）One or two in FDN-2, Paracoccus denitrificans (Paracoccus denitrificans)
DN-3 and Methylobacterium (Methylobacterium phyllosphaerae)
One or two in SDN-3, simultaneously containing marsh Calco Salmonella（Kocuria palustris）FSDN-A and staphylococcus cohnii (Staphylococcus
cohnii）FSDN-C, six kinds of bacterial strains are the bacterial strain described in CN102465105, CN102465106, CN102465104, CN102465103, CN103103141, CN103103142.
10. the method according to claim 1 or 9, it is characterised in that：When ammonia nitrogen removal frank reaches 50%～70%, microbial inoculum is added according to the 0.001%～0.01% of handled wastewater volume per hour into system daily, while microbial growth promoters are added according to 5～25mg/L of promoter concentration in sewage disposal system.
11. method according to claim 1, it is characterised in that：In handled waste water, ammonia nitrogen concentration is 30～400mg/L, and COD is 600～2000mg/L, and BOD is 100～500mg/L；In controlling wastewater treatment process, temperature is 20～40 DEG C, and pH is 7.0～9.0.
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| CN110452858A (en) * | 2019-09-12 | 2019-11-15 | 中国科学院微生物研究所 | One Paracoccus B54 and its application |
| CN110452858B (en) * | 2019-09-12 | 2021-04-27 | 中国科学院微生物研究所 | Paracoccus B54 and application thereof |
| CN115895995A (en) * | 2022-11-18 | 2023-04-04 | 天津大学 | Biomembrane growth promoter for low-temperature waste gas biofiltration device and preparation method and application thereof |
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