CN106746158B - Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process - Google Patents
Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process Download PDFInfo
- Publication number
- CN106746158B CN106746158B CN201510802229.1A CN201510802229A CN106746158B CN 106746158 B CN106746158 B CN 106746158B CN 201510802229 A CN201510802229 A CN 201510802229A CN 106746158 B CN106746158 B CN 106746158B
- Authority
- CN
- China
- Prior art keywords
- salt
- sbr
- growth promoter
- wastewater
- concentration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a method for deeply denitrifying wastewater generated in a coal water slurry gasification process, which comprises the following steps of (1) adding a dissolved air flotation system at the front end of an SBR process; (2) when starting, supplementing microorganism growth promoter to SBR sewage treatment system, wherein the growth promoter comprises metal salt, polyamine substance, organic acid hydroxylamine and Na2SO3Wherein the metal salt consists of calcium salt, copper salt, magnesium salt and/or ferrous salt; (3) and (3) adding a denitrifier into the SBR system every 3-5 SBR operation periods until the concentration of the ammonia nitrogen in the effluent is lower than 50mg/L and the total nitrogen concentration is lower than 50 mg/L. The method of the invention sets dissolved air flotation before the SBR process, and carries out advanced treatment on the nitrogen-containing pollutants in the wastewater by a short-cut nitrification and denitrification process in a mode of adding a microorganism growth promoter and a denitrification microbial inoculum into the SBR, and the effluent meets the requirement of sewage reuse.
Description
Technical Field
The invention belongs to the technical field of environmental engineering wastewater treatment, relates to a wastewater denitrification treatment method, and particularly relates to a deep denitrification treatment method for wastewater generated in a coal water slurry gasification process.
Background
Coal gasification belongs to the basic technology of coal energy conversion and is an important part in the clean utilization link of coal. The Texaco coal water slurry pressure gasification technology is widely applied due to the advantages of simple process, little environmental pollution, strong adaptability to coal types and the like. The wastewater generated in the coal water slurry gasification process contains no tar and heavy metal ions, and has low content of cyanide and phenols, and formic acid compounds are main pollutants forming wastewater COD, so the biodegradability of the wastewater is good. Most of wastewater generated in the process of coal water slurry gasification enters a sewage treatment plant to be treated by an SBR process at present, the concentration of ammonia nitrogen and COD in the treated wastewater can be lower than the standard discharge value, the standard discharge can be realized, but the reuse requirement can not be met because the total nitrogen and salt content is high.
The SBR process (sequential intermittent activated sludge process) is an activated sludge sewage treatment technology which operates according to an intermittent aeration mode, and aeration, gas stopping, stirring, sedimentation and drainage are completed in the same structure, so that the occupied area and the investment are saved; meanwhile, due to the special operation mode of the SBR method, the bioreactor has continuously alternate aerobic and anoxic metabolic environments, so that the process has diversified biological flora structures, strong impact load resistance and the capability of treating toxic and high-concentration organic wastewater. However, because the ammonia nitrogen content of the coal water slurry gasification wastewater is high and the carbon-nitrogen ratio in the wastewater is low, the concentration of nitrate is high after biochemical treatment, the salt content is high, and the nitrate cannot be recycled as circulating water. In addition, the Texaco coal water slurry gasification process specifies that calcium carbonate is added into coal as a cosolvent, so that coal gasification washing water becomes water with high hardness, high alkalinity, high turbidity and high pH value, and the standard treatment and the recycling of sewage are more difficult.
With the stricter and stricter restriction on the emission standard of nitrogen-containing pollutants in wastewater, developed countries such as the United states, France and Japan have emission requirements on total nitrogen in treated effluent, and the primary B standard in the discharge Standard of pollutants for municipal wastewater treatment plant (GB 18918-2002) in China proposes the requirement on total nitrogen. The indexes for controlling total nitrogen are increased for the first time in discharge limit of main pollutants of municipal wastewater treatment plants and key industrial industries in Taihu lake region of Jiangsu (DB 32) executed 1 month and 1 day in 2008. Indexes for controlling total nitrogen are increased in the emission standards of water pollutants for synthetic ammonia industry (GB 13458-2013), the emission standards of water pollutants for heterocyclic pesticide industry (GB 21523-2008), the emission standards of nitric acid industry pollutants (GB 26131-2010), the emission standards of oil refining industry pollutants (requisition draft), and the like. In 2 months 2010, total nitrogen assessment indexes are added to wastewater discharge of coking enterprises by 'emission standards of pollutants for coking industry' (prosecution comments), wherein total nitrogen is required to be less than or equal to 15mg/L when wastewater is directly discharged, and total nitrogen is required to be less than or equal to 30mg/L when wastewater is indirectly discharged. It can be seen that the total nitrogen emission concentration requirement is set forth in more emission standards, and therefore the total nitrogen in the wastewater must be treated.
CN201110126057.2 discloses a method for treating total nitrogen in coal chemical industry wastewater by using microorganisms, which mainly solves the technical problem that the total nitrogen in effluent of the existing A/O process cannot be effectively controlled, and is not suitable for solving the problem that the total nitrogen in the SBR process cannot be effectively treated. 201210242756 discloses a method for treating water-coal-slurry gasification wastewater by using microorganisms, wherein the wastewater sequentially enters a regulating tank, a multifunctional tank, a composite denitrification tank and a sedimentation tank, and finally reaches the standard to be discharged; a stirring and aerating device is added in the multifunctional tank, and an aerating device is matched in the composite denitrification tank; and microbial carriers with the volume of 1.0-2.5 percent and environmental microbial preparations with the volume of 1.5-4.0 percent are respectively added into the multifunctional tank and the composite denitrification tank. After the treatment of the invention, the ammonia nitrogen and the COD of the water-coal-slurry gasification wastewater can be controlled below 15mg/L, and can be controlled below 100mg/L, and a certain distance is left from the index of the COD (the concentration is lower than 60 mg/L) of the recycled water supplemented by the sewage, namely, the COD concentration in the wastewater treated by the invention can not meet the requirement of the sewage recycling, and the wastewater can be considered for recycling after further treatment.
The existing biological treatment process mainly carries out denitrification treatment through the traditional nitrification and denitrification process. For coal gasification wastewater, because the carbon-nitrogen ratio is low, if a short-cut nitrification-denitrification process is adopted for treatment, on one hand, the nitrification reaction process can be shortened, the time can be saved, and the sludge yield can be reduced, on the other hand, the consumption of dissolved oxygen in the nitrification process and the consumption of a carbon source in the denitrification process can be greatly reduced, and the operation cost is greatly reduced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for deeply denitrifying wastewater generated in a coal water slurry gasification process. The method is characterized in that dissolved air flotation is arranged before the SBR process, and the nitrogen-containing pollutants in the wastewater are subjected to advanced treatment through a short-cut nitrification and denitrification process in a mode of adding a microorganism growth promoter and a denitrification microbial inoculum into the SBR, so that the effluent meets the requirement of sewage recycling. The method is simple and feasible, is particularly suitable for the deep denitrification treatment of the coal water slurry gasification wastewater which can meet the discharge standard but is not suitable for recycling, can reduce the consumption of dissolved oxygen and carbon sources while shortening the reaction process, and greatly reduces the treatment cost of water per ton.
The invention relates to a method for deeply denitrifying wastewater generated in a coal water slurry gasification process, which comprises the following steps:
(1) a dissolved air flotation system is added at the front end of the SBR process;
(2) when starting, supplementing microorganism growth promoter to SBR sewage treatment system, wherein the growth promoter comprises metal salt, polyamine substance, organic acid hydroxylamine and Na2SO3Wherein the metal salt consists of calcium salt, copper salt, magnesium salt and/or ferrous salt;
(3) and (3) adding a denitrifier into the SBR system every 3-5 SBR operation periods until the concentration of the ammonia nitrogen in the effluent is lower than 50mg/L and the total nitrogen concentration is lower than 50 mg/L.
In the microbial growth promoter, the metal salt is 40-100 parts by weight, preferably 50-80 parts by weight, the polyamine substance is 5-30 parts by weight, preferably 10-20 parts by weight, the organic acid hydroxylamine is 0.05-1.5 parts by weight, preferably 0.1-1.0 part by weight, and Na2SO3Is 10 to 40 parts by weight, preferably 20 to 30 parts by weight.
In the microbial growth promoter of the present invention, the metal salt may be calcium salt, iron salt and copper salt, wherein Ca is2+、Fe2+And Cu2+The molar ratio of (5-15): (1-8): 0.5-5, preferably (8-12): 2-6): 1-4; or calcium, magnesium and copper salts, of which Ca is present2+、Mg2+And Cu2+The molar ratio of (5-15): (5-25): 0.5-5), preferably (8-12): 10-20): 1-4; or calcium, magnesium, iron and copper salts, wherein Ca2+、Mg2+、Fe2+And Cu2+The molar ratio of (5-15): (5-25): 1-8): 0.5-5, preferably (8-12): 10-20): 2-6): 1-4.
In the microbial growth promoter, the calcium salt is CaSO4Or CaCl2Magnesium salt is MgSO4Or MgCl2The copper salt is CuSO4Or CuCl2The iron salt is FeSO4Or FeCl2。
In the microbial growth promoter, the polyamine substance is spermine, spermidine or a mixture of spermine and spermidine. The organic acid hydroxylamine is hydroxylamine formate, hydroxylamine acetate or a mixture of the two.
In the invention, the microorganism growth promoter is added along with inlet water, and the adding amount is added according to the concentration of the promoter in a sewage treatment system of 10-40mg/L, preferably 20-30 mg/L.
In the invention, the denitrificaion bacterial agent contains arthrobacterium (A), (B), (C) and (C)Arthrobacter creatinolyticus) FDN-1, Flavobacterium aquatile: (Flavobacterium mizutaii) FDN-2, Paracoccus denitrificans: (Paracoccus denitrificans) DN-3, Methylobacterium (Methylobacterium: (M))Methylobacterium phyllosphaerae) SDN-3, Coicoccus palustris ()Kocuria palustris) FSDN-A and Staphylococcus cohnii (II)Staphylococcus cohnii) One or more of FSDN-C, six strains are CN102465105, CN102465106, CN102465104, CN102465103, CN103103141 and CN103103142 respectively, and are preserved in the 'common microorganism center of China Committee for culture Collection of microorganisms' in 2010, 3 and 11 days and 7 and 14 days in 2011, respectively, and the preservation numbers are CGMCC No.3657, CGMCC No.3659, CGMCC No.3658, CGMCC No.3660, CGMCC No.5061 and CGMCC No.5062 respectively. The microbial inoculum described in CN201210130645.8 is preferably used, wherein the microbial inoculum comprises five strains of the bacteriA of the species CockerA swartz FSDN-A, the bacteriA of the species Arthrobacter FDN-1, the bacteriA of the species Flavobacterium aquatile FDN-2, the bacteriA of the species Paracoccus denitrificans DN-3 and the bacteriA of the species Methylobacterium SDN-3, and the bacteriA can be cultured independently and then mixed in proportion or directly mixed and cultured in proportion, preferably directly mixed and cultured in proportion. The denitrogenation microbial inoculum is added once every 3 to 5 SBR operation periodsAnd adding the microbial inoculum according to the volume ratio of 0.05-0.15% of the microbial inoculum to the water inlet volume in each period until the concentration of the ammonia nitrogen in the outlet water is lower than 15mg/L and the total nitrogen concentration is lower than 25 mg/L.
In the invention, the wastewater generated in the coal water slurry gasification process is the wastewater generated in the Texaco coal water slurry gasification process, the ammonia nitrogen concentration is generally 100-1000mg/L, the COD (Cr method, the same below) is 200-1000mg/L, the phenol is less than 20mg/L, the cyanide is 10-40mg/L, the total salt content is 2000-5000mg/L, the calcium ion content is 600-1500mg/L, the magnesium ion content is 30-80mg/L, and the method also contains a small amount of more than 20 metal ions such as arsenic, lead, iron, copper and the like.
In the present invention, the dissolved air flotation system is well known to those skilled in the art. The working pressure of the dissolved air flotation is 0.5-1.5 MPa. The main purpose of dissolved air flotation is to remove ash in sewage, improve the effectiveness of sludge and further improve the biochemical effect. According to the invention, the dissolved air flotation system is added before SBR treatment, so that the influence of ash in the wastewater on a subsequent biochemical system can be effectively reduced, and the stable operation of the system is ensured.
In the invention, the SBR sewage treatment system shortens the aeration time and prolongs the stirring time at the initial operation stage, and the ratio of the aeration time to the stirring time in one operation period is 2-5: 1.
The metal salt, polyamine substance, organic acid hydroxylamine and Na used in the invention2SO3The formed accelerant can promote the growth of denitrifying microorganisms and improve the activity of enzyme, and polyamine substances in the accelerant can improve the settleability and stability of activated sludge and prolong the service life of thalli; hydroxylamine organic acid and Na2SO3The addition of the auxiliary agent is beneficial to controlling the dissolved oxygen of the system, inhibiting the activity of nitrite oxidase, shortening the nitration reaction process, being more beneficial to the denitrification of the denitrifying agent, realizing the short-cut nitrification and denitrification, and further improving the sewage treatment efficiency. The high-efficiency microorganism used in the invention can not only denitrify, but also utilize some trace metal elements in the sewage as nutrient substances for self growth, utilize calcium ions in the sewage as carriers for microorganism growth, and redundant calcium ions and hydroxyl ions orThe carbon dioxide in the air is combined to generate sediment, and the sediment is mixed in the activated sludge, so that the flocculation property of the sludge is enhanced, the salt content can be reduced while denitrification is carried out, and conditions are provided for recycling sewage as circulating water.
By adding the microorganisms with similar culture conditions and the growth promoter for cooperation, the invention can improve the deamination and denitrification efficiency and realize short-cut nitrification and denitrification total nitrogen removal, greatly reduce the consumption of dissolved oxygen in the nitrification process and the consumption of carbon sources in the denitrification process, greatly reduce the operation cost and ensure the stable operation of the system. The method can avoid a double-membrane method with higher cost, improves the treatment capacity of the existing sewage treatment system by optimizing the existing sewage treatment process, reduces the indexes such as salt content, alkalinity and the like in the sewage as much as possible by a biochemical method, deeply denitrifies the nitrogen-containing pollutants in the sewage, and provides conditions for reusing the sewage as circulating water for water supplement. The method is simple and feasible, has strong adaptability of microorganisms and good denitrification effect, and is particularly suitable for the deep denitrification treatment of the coal water slurry gasification wastewater which can meet the discharge standard but is not suitable for recycling.
Detailed Description
The process of the present invention is further illustrated in detail by the following examples.
EXAMPLE 1 preparation of microbial growth promoters
The microbial growth promoting agent used in the present invention is prepared according to the methods described in CN201410585483.6, CN201410585481.7 and cn201410585655.x, preferably prepared according to the methods described in cn201410585655. x. Firstly, metal salt solution is prepared according to the proportion and the formula of the microorganism growth promoter in the table 1, and polyamine substances, organic acid hydroxylamine and Na are added before use2SO3Adding the mixture into a metal salt solution to prepare microbial growth promoters I-III, wherein the concentration of the promoters is 0.5 g/L.
TABLE 1 formulation and proportions of microbial growth promoters
EXAMPLE 2 preparation of Denitrification microbial inoculum
The denitrifying bacteriA agent used in the method comprises five strains of Coicoccus palustris FSDN-A, Arthrobacter FDN-1, Flavobacterium aquatile FDN-2, Paracoccus denitrificans DN-3 and Methylobacterium SDN-3, and the used microbial bacteriA agent is prepared according to the method described in embodiment 1 of CN201210130645.8, and finally the bacterial suspension A (the volume ratio of the five strains is 1:1:1:1: 1) and the bacterial suspension B (the volume ratio of the five strains is 1:1:2:1.5: 3) which are harvested according to different proportions are obtained.
Example 3 treatment results of wastewater
Wastewater generated in the hydrogen production process by the Texaco coal water slurry gasification technology of a certain enterprise is treated by adopting a five-group SBR alternately operating process. The ammonia nitrogen concentration in the inlet water is 300mg/L, COD to 450mg/L, the total salt content is 2000-2800mg/L, after the treatment by the original SBR process, the ammonia nitrogen concentration in the outlet water is about 50mg/L, the COD is less than 50mg/L, the total nitrogen concentration is about 200mg/L, the total salt content is about 3200mg/L, on one hand, the waste water is that the ammonia nitrogen in the outlet water cannot reach the standard, on the other hand, the salt content is high, and the treatment cost per ton of water is 0.8 yuan.
The method is adopted for processing, and the specific process is as follows: (1) a dissolved air flotation system is added at the front end of the SBR process, and the working pressure of the dissolved air flotation is controlled to be 1.0 MPa. (2) Adding a microorganism growth promoter into the SBR system according to the concentration of the promoter in the sewage treatment system of 25 mg/L. (3) And (3) adding the denitrifying bacteria agent CN201210130645.8 into the SBR sewage treatment system every 3 SBR operation periods according to the volume ratio of the denitrifying bacteria agent to the inlet water in each period being 0.1%, and adding different promoters and bacteria agents for matched treatment for 10 days, wherein the concentrations of the ammonia nitrogen and the total nitrogen in the outlet water are shown in a table 2.
TABLE 2 effluent quality index
From the table 2, after the treatment of adding the accelerator and the denitrification fungicide, the ammonia nitrogen concentration of the effluent of the system is lower than 5mg/L, the total nitrogen concentration is lower than 25mg/L, the advanced denitrification treatment of the wastewater is realized, and the treatment cost per ton of water is reduced from the original 0.8 yuan to 0.5 yuan. Although the denitrification agent and the accelerant are added independently, a certain treatment effect is achieved, the concentration of ammonia nitrogen and total nitrogen in the effluent of the system is still high, and the advanced treatment is not realized.
Comparative example 1 treatment results of wastewater
The same waste water as that in example 1 was treated, except that the microbial growth promoter described in patent CN201410585590.9 was used, and the advanced treatment was also achieved, but the treatment time was 20 days in combination with the addition of the promoter and the microbial inoculum to achieve the same treatment effect as that in example 1. Therefore, the method can obviously shorten the treatment time and improve the sewage treatment efficiency while realizing the advanced treatment.
Claims (8)
1. A method for deeply denitrifying wastewater generated in a coal water slurry gasification process is characterized by comprising the following steps:
(1) a dissolved air flotation system is added at the front end of the SBR process;
(2) when starting, supplementing microorganism growth promoter to SBR sewage treatment system, wherein the growth promoter comprises metal salt, polyamine substance, organic acid hydroxylamine and Na2SO3Wherein the metal salt consists of calcium salt, copper salt, magnesium salt and/or ferrous salt; in the microbial growth promoter, 40-100 parts by weight of metal salt, 5-30 parts by weight of polyamine substance, 0.05-1.5 parts by weight of organic acid hydroxylamine, and Na2SO310-40 parts by weight; the polyamine substance is spermine, spermidine or a mixture of the spermine and the spermidine; the organic acid hydroxylamine is hydroxylamine formate, hydroxylamine acetate or a mixture of the two; the metal salt is calcium salt, ferrous salt and copper salt, wherein Ca2+、Fe2+And Cu2+The molar ratio of (5-15) to (1-8) to (0.5-5); or calcium, magnesium and copper salts, of which Ca is present2+、Mg2+And Cu2+The molar ratio of (5-15) to (5-25) to (0.5-5); or calcium, magnesium, ferrous and copper salts, of which Ca is present2+、Mg2+、Fe2+And Cu2+The molar ratio of (5-15): (5-25): (1-8): (0.5-5）；
(3) And (3) adding a denitrifier into the SBR system every 3-5 SBR operation periods until the concentration of the ammonia nitrogen in the effluent is lower than 50mg/L and the total nitrogen concentration is lower than 50 mg/L.
2. The method of claim 1, wherein: in the microorganism growth promoter, calcium salt is CaSO4Or CaCl2Magnesium salt is MgSO4Or MgCl2The copper salt is CuSO4Or CuCl2The ferrous salt is FeSO4Or FeCl2。
3. The method of claim 1, wherein: the microbial growth promoter is added along with inlet water, and the adding amount is added according to the concentration of the promoter in the sewage treatment system of 10-40 mg/L.
4. The method of claim 1, wherein: the denitrificaion agent contains arthrobacterium (A), (B), (C) and (C)Arthrobacter creatinolyticus) FDN-1, Flavobacterium aquatile: (Flavobacterium mizutaii) FDN-2, Paracoccus denitrificans: (Paracoccus denitrificans) DN-3, Methylobacterium (Methylobacterium: (M))Methylobacterium phyllosphaerae) SDN-3, Coicoccus palustris ()Kocuria palustris) FSDN-A and Staphylococcus cohnii (II)Staphylococcus cohnii) One or more of FSDN-C.
5. The method of claim 1, wherein: the denitrogenation microbial inoculum is the microbial inoculum described in CN 201210130645.8.
6. The method of claim 1, 4 or 5, wherein: the denitrogenation microbial inoculum is added once every 3-5 SBR operation periods, and the denitrogenation microbial inoculum is added according to the volume ratio of the microbial inoculum to water inlet of 0.05-0.15% in each period until the concentration of ammonia nitrogen in outlet water is lower than 15mg/L and the total nitrogen concentration is lower than 25 mg/L.
7. The method of claim 1, wherein: the wastewater generated in the coal water slurry gasification process is the wastewater generated in the Texaco coal water slurry gasification process, the ammonia nitrogen concentration is 1000mg/L, the COD is 1000mg/L, the phenol is less than 20mg/L, the cyanide is 10-40mg/L, the total salt content is 5000mg/L, the calcium ion is 1500mg/L, the magnesium ion is 30-80mg/L, and the wastewater also contains a small amount of arsenic, lead, iron and copper ions.
8. The method of claim 1, wherein: the SBR treatment system shortens the aeration time and prolongs the stirring time in the initial operation stage, and the ratio of the aeration time to the stirring time in one operation period is 2-5: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802229.1A CN106746158B (en) | 2015-11-19 | 2015-11-19 | Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510802229.1A CN106746158B (en) | 2015-11-19 | 2015-11-19 | Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106746158A CN106746158A (en) | 2017-05-31 |
| CN106746158B true CN106746158B (en) | 2020-09-11 |
Family
ID=58916600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510802229.1A Active CN106746158B (en) | 2015-11-19 | 2015-11-19 | Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106746158B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109876641B (en) * | 2017-12-06 | 2021-10-08 | 中国石油化工股份有限公司 | Method and device for treating NOx-containing flue gas |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986450A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN1986448A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN201908024U (en) * | 2010-12-14 | 2011-07-27 | 吉林市世纪华扬环境工程有限公司 | Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier |
| CN102276056A (en) * | 2011-06-03 | 2011-12-14 | 北京国电富通科技发展有限责任公司 | Process for treating coal chemical wastewater by adding active material into activated sludge pool |
| CN103964631A (en) * | 2014-03-27 | 2014-08-06 | 武汉科梦环境工程有限公司 | Efficient coal-water slurrygasification ash water treatment method |
-
2015
- 2015-11-19 CN CN201510802229.1A patent/CN106746158B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1986450A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN1986448A (en) * | 2005-12-22 | 2007-06-27 | 中国石化上海石油化工股份有限公司 | Sequencing batch active sludge process for eliminating ammonia nitrogen from sewage |
| CN201908024U (en) * | 2010-12-14 | 2011-07-27 | 吉林市世纪华扬环境工程有限公司 | Waste water treatment device for coal gasification production by aid of Lurgi pressurized gasifier |
| CN102276056A (en) * | 2011-06-03 | 2011-12-14 | 北京国电富通科技发展有限责任公司 | Process for treating coal chemical wastewater by adding active material into activated sludge pool |
| CN103964631A (en) * | 2014-03-27 | 2014-08-06 | 武汉科梦环境工程有限公司 | Efficient coal-water slurrygasification ash water treatment method |
Non-Patent Citations (2)
| Title |
|---|
| In Vitro Activation of Ammonia Monooxygenase from Nitrosomonas europaea by Copper;Scott A.Ensin等;《Journal of Bacteriology》;19930430;第1971-1980页 * |
| Partial nitrification adjusted by hydroxylamine in aerobic granules under high DO and ambient temperature and subsequent Anammox for low C/N wastewater treatment;Guangjing Xu等;《Chemical Engineering Journal》;20121027(第213期);第338-345页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106746158A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108483655B (en) | Method for deep denitrification by coupling shortcut nitrification and denitrification with anaerobic ammonia oxidation and sulfur autotrophic denitrification | |
| WO2022016769A1 (en) | Biological enhancement processing process for lithium battery production wastewater | |
| CN110683643B (en) | Enrichment method of anaerobic ammonium oxidation bacteria | |
| CN106745713B (en) | Rapid starting method of anaerobic ammonia oxidation reactor | |
| CN106434469B (en) | Low-temperature-resistant nitrifying bacteria agent and preparation method and application thereof | |
| CN105585133B (en) | The biological denitrification method of the high saline sewage of catalyst production process discharge | |
| CN111392865A (en) | Method for treating organic amine wastewater | |
| CN106554076B (en) | Biological treatment method of ammonia-containing wastewater | |
| CN107311307B (en) | Treatment method of refractory organic wastewater | |
| CN103045578A (en) | Preparation method of composite bacterial agent of ammonia oxidation bacteria | |
| CN106754451B (en) | Method for enrichment culture of salt-tolerant nitrite flora | |
| CN106746158B (en) | Advanced denitrification treatment method for wastewater generated in coal water slurry gasification process | |
| CN104944671B (en) | A kind of processing method of wastewater from molecular sieve catalyzer | |
| CN106745727B (en) | Denitrification method for ammonia-containing wastewater discharged in acrylic fiber production process | |
| CN105624054B (en) | Method for enrichment culture of salt-tolerant nitrifying bacteria | |
| CN111099722B (en) | Composition for promoting denitrification and application thereof | |
| CN109880784B (en) | Composition for promoting denitrification of denitrifying microorganisms and application thereof | |
| CN106554124B (en) | Method for treating wastewater generated in production process of molecular sieve catalyst | |
| CN108117156B (en) | Method for rapidly recovering stable operation of completely autotrophic nitrogen removal process | |
| CN111100836A (en) | Composition for improving toxicity resistance of microorganisms capable of removing ammonia nitrogen and application thereof | |
| CN110759607A (en) | Process for removing total nitrogen from printing and dyeing wastewater | |
| CN105540990B (en) | A kind of coal water slurry gasification process generates the deepness denitrogenation method for treating of waste water | |
| CN106554082B (en) | Biological treatment method of refractory organic wastewater | |
| CN105621610A (en) | Salt-containing sewage simultaneous nitrification and denitrification denitrogenation method | |
| CN115557606B (en) | Sulfur autotrophic denitrification and anaerobic ammonia oxidation coupling denitrification method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |