CN208071513U - A kind of anaerobic fermentation biogas slurry vacuum concentration removes the device of ammonia nitrogen - Google Patents
A kind of anaerobic fermentation biogas slurry vacuum concentration removes the device of ammonia nitrogen Download PDFInfo
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- CN208071513U CN208071513U CN201721766856.5U CN201721766856U CN208071513U CN 208071513 U CN208071513 U CN 208071513U CN 201721766856 U CN201721766856 U CN 201721766856U CN 208071513 U CN208071513 U CN 208071513U
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- Prior art keywords
- biogas slurry
- purifying column
- membrane separator
- connect
- ammonia nitrogen
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The utility model is related to sewage treatment fields, it discloses a kind of anaerobic fermentation biogas slurry and is concentrated in vacuo device except ammonia nitrogen, including purifying column, biogas slurry heater, defoaming tank, surge tank, biogas slurry cooler, knockout drum, membrane separator, vacuum system, the purifying column top is equipped with material inlet, connect at the top of the purifying column top and biogas slurry heater, purifying column lower part is connect with biogas slurry heater lower part, the purifying column top is connect with pot bottom is defoamed；The defoaming tank top is connect with surge tank top, and the buffering pot bottom is connect with purifying column top.The utility model concentrate under the pressure of -0.06~-0.07MPa by biogas slurry, the condensed water ammonia-nitrogen content < 5mg/L condensed out, can direct reuse in anaerobic fermentation and do not influence aerogenesis effect；The utility model saves 50% or more energy consumption, and entire processing procedure No Assets waste, invariably waste water and gas discharge up to standard than existing biogas slurry concentrate processing mode, reduces environmental pollution, with good economic efficiency and social benefit.
Description
Technical field
The utility model is related to sewage treatment field, especially a kind of processing method of anaerobic fermentation biogas slurry.
Background technology
With the improvement of people's living standard in our country, scale animal and poultry cultivation industry is grown rapidly, and generates a large amount of cultivation wastes,
The country mostly uses anaerobic ferment process and handles these wastes at present, effectively reduces the primary pollution of feces of farm.But simultaneously
It is not all that through anaerobic ferment process, treated that waste can be fully used.It, can since farm their location is different
Processing method to dissolve waste water after processing completely, which can only limitedly be applied to periphery, farmland appropriate, fish pond or aquatic
The livestock and poultry place of Plant Pond, and by the environment for planning as a whole system arrangement of the ecological agriculture.Most of farm does not fill
The condition and corresponding ability of foot reach such tupe.Therefore it while waste recycling, still will produce
Largely, concentrate, secondary pollutant-biogas slurry.
Biogas slurry is to cultivate answering of being generated after anaerobic fermentation in methane-generating pit of the organic wastes such as excrement and agricultural crop straw
Miscellaneous, high concentration organic wastewater has corruption in biogas slurry containing multiple elements, active organic components such as nitrogen, phosphorus, potassium, magnesium and calcium
The plant hormones such as phytic acid, heteroauxin, lactic acid bacteria, gibberellin and the basic element of cell division and B family vitamin, also containing there are many amino
Acid, protein, hydrolase and the organic molecules such as a variety of inorganic acids and certain antibiotic.Mutual coordinative role between these ingredients
It is present in biogas slurry in the form of available nutrient and biological pesticide, directly can be promptly absorbed and be killed harmful levels of pathogens and worm's ovum
And promote the growth of the plants such as crops and flowers, therefore biogas slurry could also say that a kind of medicine fertilizer.The science application of biogas slurry can carry
The content of high soil with organic matter and nutrient improves soil texture, increases soil fertility；But containing a large amount of in biogas slurry
The water of solid and free state, if its direct returning to farmland is utilized so that the value of the nutritional ingredient of solid therein cannot be effective
It utilizes, and waste water resource；And nutritional ingredient concentration is low in scale animal and poultry cultivation industry region, biogas slurry, and biogas slurry is for being more than
It asks, ammonia-nitrogen content > 500mg/L in biogas slurry, exceeds discharge standard, if the discharge of excessive biogas slurry will be caused environmental pollution.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of anaerobic fermentation biogas slurries to be concentrated in vacuo the dress except ammonia nitrogen
It sets, solves in the prior art that nutritional ingredient concentration is low in biogas slurry, excessive biogas slurry discharge causes environmental pollution and water resource waste
Problem.
Technical solution adopted by the utility model to solve its technical problems is：A kind of anaerobic fermentation biogas slurry vacuum concentration is removed
The device of ammonia nitrogen, including purifying column, biogas slurry heater, defoaming tank, surge tank, biogas slurry cooler, knockout drum, UF membrane
Device, vacuum system, the purifying column top are equipped with material inlet, connect, carry at the top of the purifying column top and biogas slurry heater
Pure tower lower part is connect with biogas slurry heater lower part, is connect with defoaming pot bottom at the top of the purifying column；The defoaming tank top with
Surge tank top connects, and the buffering pot bottom is connect with purifying column top；The biogas slurry cooler be equipped with cooling medium into
Mouth, cooling media outlet, gas feed, gas vent and liquid outlet；
The membrane separator is equipped with material inlet, ammonia nitrogen outlet, gas vent, the surge tank top and membrane separator
Material inlet connects, and the membrane separator ammonia nitrogen outlet is connect with vacuum system, and the membrane separator gas vent and biogas slurry are cold
But device gas feed connects, and heat transferring medium import and heat exchange for keeping membrane separator temperature are additionally provided on the membrane separator
Media outlet；
The biogas slurry cooler gas outlet is connect with knockout drum, and the gas-liquid separation tank top connects with vacuum system
It connects, the biogas slurry cooler liquid outlet is connected to gas-liquid separation pot bottom.
Further, the biogas slurry heater is equipped with steam inlet and condensation-water drain, for leading to steam heating purification
Tower.
Further, the biogas slurry cooler is chilled brine or cooling water for the cooling medium of condensation.
A kind of method that anaerobic fermentation biogas slurry vacuum concentration removes ammonia nitrogen, includes the following steps：
(a) a kind of anaerobic fermentation biogas slurry as described above is provided and is concentrated in vacuo the device for removing ammonia nitrogen, anaerobic fermentation will be come from
Purifying column is added in the biogas slurry of tank, and carrying out heating purification to purifying column using biogas slurry heater makes liquid be changed into indirect steam, and two
Secondary steam, which is entered by tower top after defoaming tank carries out 15~20s of defoaming, enters back into 20~25s of stop in surge tank；The purifying column
Pressure is -0.06~-0.07MPa, and the purifying column bottom temperature is 65~70 DEG C；
(b) buffering pot liquid returns to purifying column, and gas enters membrane separator, detached to the ammonia nitrogen in indirect steam
Enter biogas slurry cooler afterwards, the condensed water condensed out in biogas slurry cooler returns to anaerobic fermentation tank and recycles；It is not condensed
Gas enter that gas after knockout drum gas-liquid separation is detached by vacuum system, condensed water in biogas slurry cooler with condensing out
Condensed water return anaerobic fermentation tank；The ammonia nitrogen being enriched in membrane separator is detached by vacuum system；On the inside of the membrane separator film
Pressure is -0.08~-0.09MPa, and the film outside pressure of membrane separator is -0.07~-0.08MPa, the temperature of the membrane separator
Degree is 60~65 DEG C.
Further, the biogas slurry after the purification of purified tower by delivery pump be delivered to filter cross filter out filter residue after pure natural pond
Liquid.
Further, the pure biogas slurry of gained is as organic fertilizer application.
Further, the vacuum system is used to cool down to purifying column, biogas slurry heater, defoaming tank, surge tank, biogas slurry
Device, membrane separator, knockout drum provide negative pressure.Vacuum pump can be selected in vacuum system.
Further, the membrane separator selects hollow fiber form, the film of membrane separator to select polyimide film, gather inclined fluorine
One or more of vinyl film, sulfonated polyether sulfone film, cellulose acetate film.
Further, side pressure difference >=0.01MPa inside and outside the film of the membrane separator.
The utility model has the beneficial effects that：The biogas slurry that the utility model generates medium and high temperature anaerobic digestion -0.06~
Concentrate under the pressure of -0.07MPa, entire processing procedure not nutriments such as destruction of organic material, under being condensed in biogas slurry cooler
Come condensed water ammonia-nitrogen content < 5mg/L, can direct reuse in anaerobic fermentation and do not influence aerogenesis effect；The utility model is than existing
There is biogas slurry concentrate processing mode to save 50% or more energy consumption, and the entire waste of processing procedure No Assets, invariably waste water and gas up to standard
Discharge, reduces environmental pollution, with good economic efficiency and social benefit.
Description of the drawings
Fig. 1 is the apparatus structure schematic diagram of the utility model；
In figure label for：1- purifying columns, 2- biogas slurries heater, 3- defoamings tank, 4- surge tanks, 5- biogas slurries cooler, 6- gas
Liquid knockout drum, 7- membrane separators, 8- vacuum pumps, 9- anaerobic fermentation tanks.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of anaerobic fermentation biogas slurry is concentrated in vacuo the device except ammonia nitrogen, including purifying column 1, biogas slurry heater
2, tank 3, surge tank 4, biogas slurry cooler 5, knockout drum 6, membrane separator 7, vacuum pump 8 are defoamed, 1 top of the purifying column is set
There is material inlet, is connect at the top of 1 top of the purifying column and biogas slurry heater 2,2 lower part of 1 lower part of purifying column and biogas slurry heater
Connection, 1 top of the purifying column are connect with 3 bottom of defoaming tank；3 top of the defoaming tank is connect with 4 top of surge tank, described slow
4 bottom of tank is rushed to connect with 1 top of purifying column；The biogas slurry cooler 5 is equipped with cooling medium inlet, cooling media outlet, gas
Body import, gas vent and liquid outlet；
The membrane separator 7 is equipped with material inlet, ammonia nitrogen outlet, gas vent, 4 top of the surge tank and UF membrane
7 material inlet of device connects, and the outlet of 7 ammonia nitrogen of the membrane separator is connect with vacuum pump 8,7 gas vent of the membrane separator and natural pond
5 gas feed of liquid cooler connects, be additionally provided on the membrane separator 7 for keep the heat transferring medium of 7 temperature of membrane separator into
Mouth and heat transferring medium outlet；Hot water or steam can be selected in the heat transferring medium.
5 gas vent of biogas slurry cooler is connect with knockout drum 6,6 top of the knockout drum and vacuum pump 8
Connection, 5 liquid outlet of biogas slurry cooler are connected to 6 bottom of knockout drum.
The biogas slurry heater 2 is equipped with steam inlet and condensation-water drain, and purifying column 1 is heated for leading to steam.It is described
Biogas slurry cooler is chilled brine or circulation cooling water for the cooling medium of condensation.
A kind of method that anaerobic fermentation biogas slurry vacuum concentration removes ammonia nitrogen, includes the following steps：
(a) a kind of anaerobic fermentation biogas slurry as described above is provided and is concentrated in vacuo the device for removing ammonia nitrogen, anaerobic fermentation will be come from
Purifying column 1 is added in the biogas slurry of tank 9, and carrying out heating purification to purifying column 1 using biogas slurry heater 2 makes liquid be changed into secondary steaming
Vapour, indirect steam, which is entered by tower top after defoaming tank 3 carries out 15~20s of defoaming, enters back into 20~25s of stop in surge tank 4；It is described
The pressure of purifying column 1 is -0.06~-0.07MPa, and 1 bottom temperature of the purifying column is 65~70 DEG C；After purified tower 1 purifies
Biogas slurry by delivery pump be delivered to filter cross filter out filter residue after pure biogas slurry, the pure biogas slurry of gained is as organic fertilizer application.Institute
It is 65~70 DEG C to state 1 bottom temperature of purifying column, and control 1 liquid level of purifying column is 1/3~2/3；The ingredient of biogas slurry be organic matter 35~
50%, humic acid 10~25%, full nitrogen 0.6~1.5%, full phosphorus 0.2~0.5%, full potassium 0.5~1.0% and some micro members
Element；The pressure of purifying column 1 is -0.06~-0.07MPa, according to the property of the nutritional ingredients such as organic matter in biogas slurry, higher than 70
DEG C when biogas slurry in nitrogen can significantly reduce, both can be under -0.06~-0.07MPa pressure, at a temperature of 65~70 DEG C
So that biogas slurry is changed into indirect steam, do not destroy the nutriments such as organic matter in biogas slurry, and compared with atmospheric operation energy saving 60% or more；
(b) liquid returns to purifying column 1 in surge tank 4, and gas enters membrane separator 7, is carried out to the ammonia nitrogen in indirect steam
Enter biogas slurry cooler 5 after separation, the condensed water condensed out in biogas slurry cooler 5 returns to anaerobic fermentation tank 9 and recycles；Not
The gas being condensed enters after 6 gas-liquid separation of knockout drum that gas is detached by vacuum pump 8, condensed water is in biogas slurry cooler 5
The condensed water condensed out returns to anaerobic fermentation tank 9；The ammonia nitrogen being enriched in membrane separator 7 is detached by vacuum pump 8；The UF membrane
7 film inside pressure of device is -0.08~-0.09MPa, and the film outside pressure of membrane separator 7 is -0.07~-0.08MPa, the film
The temperature of separator 7 is 60~65 DEG C.Biogas slurry is 1.2~1.4cp in 60~65 DEG C of viscosity, and biogas slurry concentrates in purifying column 1
In the process, biogas slurry generation bubble enters defoaming tank 3 with indirect steam, and defoaming tank 3 act as defoaming in this part bubble, makes it
Becoming gas-liquid mixed state, the gas-liquid facilitated access for after surge tank 4 is sufficiently separated, if without defoaming treatment, the buffered tank of bubble 4
Into being condensed out in biogas slurry cooler 5, into anaerobic fermentation tank, reduces purification & isolation effect and influence fermentation gas effect
Fruit；Side pressure difference >=0.01MPa inside and outside the film of the membrane separator 7, this pressure difference and at a temperature of, it is ensured that 90 or more percent
Ammonia nitrogen discharged by vacuum pump through film, and herein -0.07~-0.08MPa pressure, ensure at a temperature of 60~65 DEG C to enter film
Only gas improve membrane separating effect without liquid.
Select vacuum pump to purifying column 1, biogas slurry heater 2, defoaming tank 3, surge tank 4, biogas slurry cooler 5, membrane separator
7, knockout drum 6 provides negative pressure.
The membrane separator 7 selects hollow fiber form, the film of membrane separator select polyimide film, polyvinylidene fluoride film,
One or more of sulfonated polyether sulfone film, cellulose acetate film.
Purified tower 1 purify after biogas slurry by delivery pump be delivered to filter cross filter out filter residue after pure biogas slurry.To purification
1 tower reactor of tower is sampled analysis, the content of material of biogas slurry after analysis purification, is mainly subject to the analysis data of organic value, contains
Amount is determined as needed, and filter filtering is delivered to by delivery pump after sampling is qualified.Pure biogas slurry volume after concentrate is original
The 30~40% of biogas slurry volume, and the nutriments such as organic matter in former biogas slurry are not destroyed, are improved as the pure of organic fertilizer
The content of nutriment in biogas slurry；Waste water is set to recycle under conditions of ensureing former biogas slurry fertilizer efficiency, it is energy-saving.
Filter residue is sent to solid organic fertilizer production line and organic fertilizer is made as organic fertilizer production raw material, further improves biogas slurry
The high value of resource utilizes.
Embodiment：
As shown in Figure 1, a kind of anaerobic fermentation biogas slurry is concentrated in vacuo the device except ammonia nitrogen, including purifying column 1, biogas slurry heater
2, tank 3, surge tank 4, biogas slurry cooler 5, knockout drum 6, membrane separator 7, vacuum pump 8 are defoamed, 1 top of the purifying column is set
There is material inlet, is connect at the top of 1 top of the purifying column and biogas slurry heater 2,2 lower part of 1 lower part of purifying column and biogas slurry heater
Connection, 1 top of the purifying column are connect with 3 bottom of defoaming tank；3 top of the defoaming tank is connect with 4 top of surge tank, described slow
4 bottom of tank is rushed to connect with 1 top of purifying column；The biogas slurry cooler 5 is equipped with cooling medium inlet, cooling media outlet, gas
Body import, gas vent and liquid outlet；The membrane separator 7 is equipped with material inlet, ammonia nitrogen outlet, gas vent, described
4 top of surge tank is connect with 7 material inlet of membrane separator, and the outlet of 7 ammonia nitrogen of the membrane separator is connect with vacuum pump 8, the film
7 gas vent of separator is connect with 5 gas feed of biogas slurry cooler, is additionally provided on the membrane separator 7 for keeping UF membrane
The heat transferring medium import of 7 temperature of device and heat transferring medium outlet；Steam can be selected in the heat transferring medium.The biogas slurry cooler 5
Gas vent is connect with knockout drum 6, and 6 top of the knockout drum is connect with vacuum pump 8,5 liquid of biogas slurry cooler
Body outlet is connected to 6 bottom of knockout drum.
The biogas slurry heater 2 is equipped with steam inlet and condensation-water drain, and purifying column 1 is heated for leading to steam.It is described
Biogas slurry cooler is chilled brine for the cooling medium of condensation.
A kind of method that anaerobic fermentation biogas slurry vacuum concentration removes ammonia nitrogen, includes the following steps：
(a) a kind of anaerobic fermentation biogas slurry as described above is provided and is concentrated in vacuo the device for removing ammonia nitrogen, anaerobic fermentation will be come from
Purifying column 1 is added in the biogas slurry of tank 9, and carrying out heating purification to purifying column 1 using biogas slurry heater 2 makes liquid be changed into secondary steaming
Vapour, indirect steam, which is entered by tower top after defoaming tank 3 carries out 15~20s of defoaming, enters back into 20~25s of stop in surge tank 4；It is described
The pressure of purifying column 1 is -0.06~-0.07MPa, and 1 bottom temperature of the purifying column is 65~70 DEG C；After purified tower 1 purifies
Biogas slurry by delivery pump be delivered to filter cross filter out filter residue after pure biogas slurry, the pure biogas slurry of gained is as organic fertilizer application.
(b) liquid returns to purifying column 1 in surge tank 4, and gas enters membrane separator 7, is carried out to the ammonia nitrogen in indirect steam
Enter biogas slurry cooler 5 after separation, the condensed water condensed out in biogas slurry cooler 5 returns to anaerobic fermentation tank 9 and recycles；Not
The gas being condensed enters after 6 gas-liquid separation of knockout drum that gas is detached by vacuum pump 8, condensed water is in biogas slurry cooler 5
The condensed water condensed out returns to anaerobic fermentation tank 9；The ammonia nitrogen being enriched in membrane separator 7 is detached by vacuum pump 8；The UF membrane
7 film inside pressure of device is -0.08~-0.09MPa, and the film outside pressure of membrane separator 7 is -0.07~-0.08MPa, the film
The temperature of separator 7 is 60~65 DEG C.
Select vacuum pump to purifying column 1, biogas slurry heater 2, defoaming tank 3, surge tank 4, biogas slurry cooler 5, membrane separator
7, knockout drum 6 provides negative pressure.
The membrane separator 7 selects hollow fiber form, the film of membrane separator to select polyimide film.
Purified tower 1 purify after biogas slurry by delivery pump be delivered to filter cross filter out filter residue after pure biogas slurry.To purification
1 tower reactor of tower is sampled analysis, the content of material of biogas slurry after analysis purification, is mainly subject to the analysis data of organic value, contains
Amount is determined as needed, and filter filtering is delivered to by delivery pump after sampling is qualified.Pure biogas slurry volume after concentrate is original
The 30~40% of biogas slurry volume, and the nutriments such as organic matter in former biogas slurry are not destroyed, are improved as the pure of organic fertilizer
The content of nutriment in biogas slurry；Waste water is set to recycle under conditions of ensureing former biogas slurry fertilizer efficiency, it is energy-saving.
Filter residue is sent to solid organic fertilizer production line and organic fertilizer is made as organic fertilizer production raw material, further improves biogas slurry
The high value of resource utilizes.
Claims (6)
1. a kind of anaerobic fermentation biogas slurry is concentrated in vacuo the device except ammonia nitrogen, it is characterised in that：Including purifying column, biogas slurry heater,
Tank, surge tank, biogas slurry cooler, knockout drum, membrane separator, vacuum system are defoamed, the purifying column top is equipped with raw material
It is connect at the top of import, the purifying column top and biogas slurry heater, purifying column lower part is connect with biogas slurry heater lower part, described to carry
Pure top of tower is connect with defoaming pot bottom；The defoaming tank top is connect with surge tank top, the buffering pot bottom and purification
Tower top connects；The biogas slurry cooler be equipped with cooling medium inlet, cooling media outlet, gas feed, gas vent and
Liquid outlet；
The membrane separator is equipped with material inlet, ammonia nitrogen outlet, gas vent, the surge tank top and membrane separator material
Import connects, and the membrane separator ammonia nitrogen outlet is connect with vacuum system, the membrane separator gas vent and biogas slurry cooler
Gas feed connects, and heat transferring medium import and heat transferring medium for keeping membrane separator temperature are additionally provided on the membrane separator
Outlet；
The biogas slurry cooler gas outlet is connect with knockout drum, and the gas-liquid separation tank top is connect with vacuum system,
The biogas slurry cooler liquid outlet is connected to gas-liquid separation pot bottom.
2. a kind of anaerobic fermentation biogas slurry according to claim 1 is concentrated in vacuo the device except ammonia nitrogen, it is characterised in that：It is described
Biogas slurry heater is equipped with steam inlet and condensation-water drain, and purifying column is heated for leading to steam.
3. a kind of anaerobic fermentation biogas slurry according to claim 1 is concentrated in vacuo the device except ammonia nitrogen, it is characterised in that：It is described
Biogas slurry cooler is chilled brine or cooling water for the cooling medium of condensation.
4. a kind of anaerobic fermentation biogas slurry according to claim 1 is concentrated in vacuo the device except ammonia nitrogen, it is characterised in that：It is described
Vacuum system be used for purifying column, biogas slurry heater, defoaming tank, surge tank, biogas slurry cooler, membrane separator, gas-liquid separation
Tank provides negative pressure.
5. a kind of anaerobic fermentation biogas slurry according to claim 1 is concentrated in vacuo the device except ammonia nitrogen, which is characterized in that described
Membrane separator selects hollow fiber form, the film of membrane separator select polyimide film, polyvinylidene fluoride film, sulfonated polyether sulfone film,
One or more of cellulose acetate film.
6. a kind of anaerobic fermentation biogas slurry according to claim 1 is concentrated in vacuo the device except ammonia nitrogen, which is characterized in that described
Side pressure difference >=0.01MPa inside and outside the film of membrane separator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721766856.5U CN208071513U (en) | 2017-12-15 | 2017-12-15 | A kind of anaerobic fermentation biogas slurry vacuum concentration removes the device of ammonia nitrogen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721766856.5U CN208071513U (en) | 2017-12-15 | 2017-12-15 | A kind of anaerobic fermentation biogas slurry vacuum concentration removes the device of ammonia nitrogen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734230A (en) * | 2017-12-15 | 2019-05-10 | 自贡佳禾新能源科技有限公司 | A kind of anaerobic fermentation biogas slurry vacuum concentration removes the method and device of ammonia nitrogen |
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2017
- 2017-12-15 CN CN201721766856.5U patent/CN208071513U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109734230A (en) * | 2017-12-15 | 2019-05-10 | 自贡佳禾新能源科技有限公司 | A kind of anaerobic fermentation biogas slurry vacuum concentration removes the method and device of ammonia nitrogen |
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Granted publication date: 20181109 Termination date: 20211215 |