CN104891592A - Ammonia nitrogen-containing wastewater treatment equipment - Google Patents
Ammonia nitrogen-containing wastewater treatment equipment Download PDFInfo
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- CN104891592A CN104891592A CN201410078586.3A CN201410078586A CN104891592A CN 104891592 A CN104891592 A CN 104891592A CN 201410078586 A CN201410078586 A CN 201410078586A CN 104891592 A CN104891592 A CN 104891592A
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Abstract
The invention relates to ammonia nitrogen-containing wastewater treatment equipment, which comprises a gas stripping tower, a heater, a catalyst reactor and a gas-gas heat exchanger. According to the present invention, ammonia nitrogen-containing wastewater and gas stripping gas are subjected to gas stripping in the gas stripping tower to form the gas stripping wastewater and the ammonia-containing gas, the ammonia-containing gas is heated by the heater and is treated by the catalyst reactor so as to make the ammonia in the gas be oxidized to obtain the treated gas, and the ammonia-containing gas and the treated gas are subjected to heat exchange through the gas-gas heat exchanger, wherein the heat exchange efficiency of the gas-gas heat exchanger is correspondingly adjusted according to the total heat value of the ammonia-containing gas so as to correspondingly reduce the heat exchange efficiency along with the increase of the total heat value or correspondingly increase the heat exchange efficiency along with the decrease of the total heat value.
Description
Technical field
The invention relates to a kind of sewage treatment equipment, particularly about a kind for the treatment of facility of nitrogen-containing wastewater.
Background technology
Press, high-tech industry uses nitrogenous pharmaceutical chemicals in a large number, therefore the frequent generation along with a large amount of nitrogen-containing wastewater, the dissolved oxygen in water can be consumed in a large number in nitrifying process due to ammonia nitrogen, cause water quality deterioration, therefore nitrogen-containing wastewater has to pass through process, reduces the ammonia-nitrogen content in waste water, begin externally discharge, in order to avoid work the mischief to environment.
Summary of the invention
The object of this invention is to provide a kind for the treatment of facility effectively can removing ammonia nitrogen in waste water.
For achieving the above object, the treatment facility of nitrogen-containing wastewater provided by the invention, it comprises a gas stripping column, a well heater, a hydrogen-catalyst reactor and a gas to gas-heat exchanger.This gas stripping column has a liquid inlet, one liquid exit, one gas inlet, one pneumatic outlet and an air lift room and this liquid inlet, liquid exit, gas inlet and pneumatic outlet are communicated with, this liquid inlet flows into this air lift room for a nitrogen-containing wastewater, this gas inlet flows into this air lift room for a stripping gas and carry out air lift to nitrogen-containing wastewater, nitrogen-containing wastewater becomes waste water after air lift after air lift, stripping gas is taken the ammonia in nitrogen-containing wastewater out of and becomes ammonia-containing gas when air lift, this pneumatic outlet flows out this air lift room for ammonia-containing gas, this liquid exit is then flow out this air lift room for waste water after air lift.This well heater obtains heated air in order to heat described ammonia-containing gas.This hydrogen-catalyst reactor, in order to process described heated air, makes the ammonia oxidation in heated air and gas after obtaining a process.This gas has one first path and one second path to gas-heat exchanger inside, the described ammonia-containing gas being flowed out air lift room by pneumatic outlet enters this well heater via this gas to the first path of gas-heat exchanger, after process after hydrogen-catalyst reactor process, gas is then imported into second path of gas to gas-heat exchanger, heat exchange is carried out in order to make the rear gas of described ammonia-containing gas and process, after the process of heat exchange, gas fraction is discharged outside to, and becomes described stripping gas after remaining part mixes with ambient atmos.Wherein, the heat exchanger effectiveness of gas to gas-heat exchanger is total heating value according to described ammonia-containing gas and corresponding adjustment, make described heat exchanger effectiveness correspondingly turn down along with the rising of described total heating value, or make described heat exchanger effectiveness correspondingly heighten along with the reduction of described total heating value.
The present invention also provides a kind for the treatment of facility of nitrogen-containing wastewater, and it comprises a gas stripping column, a well heater, a hydrogen-catalyst reactor and a gas to gas-heat exchanger.This gas stripping column has a liquid inlet, one liquid exit, one gas inlet, one pneumatic outlet and an air lift room and this liquid inlet, liquid exit, gas inlet and pneumatic outlet are communicated with, this liquid inlet flows into this air lift room for a nitrogen-containing wastewater, this gas inlet flows into this air lift room for a stripping gas and carry out air lift to nitrogen-containing wastewater, nitrogen-containing wastewater becomes waste water after air lift after air lift, stripping gas is taken the ammonia in nitrogen-containing wastewater out of and becomes ammonia-containing gas when air lift, this liquid exit flows out this air lift room for waste water after air lift, this pneumatic outlet is then flow out this air lift room for ammonia-containing gas, described ammonia-containing gas mixes with ambient atmos behind this air lift room of outflow.This well heater is in order to be mixed with the ammonia-containing gas of ambient atmos described in heating and to obtain heated air.This hydrogen-catalyst reactor, in order to process described heated air, makes the ammonia oxidation in heated air and gas after obtaining a process.This gas has one first path and one second path to gas-heat exchanger inside, the described ammonia-containing gas being mixed with ambient atmos enters this well heater via this gas to the first path of gas-heat exchanger, after process after hydrogen-catalyst reactor process, gas is then imported into second path of gas to gas-heat exchanger, heat exchange is carried out in order to make the rear gas of described ammonia-containing gas and process, after the process of heat exchange, gas fraction is discharged outside to, and remaining part becomes described stripping gas.Wherein, the heat exchanger effectiveness of gas to gas-heat exchanger is total heating value according to described ammonia-containing gas and corresponding adjustment, make described heat exchanger effectiveness correspondingly turn down along with the rising of described total heating value, or make described heat exchanger effectiveness correspondingly heighten along with the reduction of described total heating value.
The present invention adjusts the heat exchanger effectiveness of gas to gas-heat exchanger by the total heating value according to ammonia-containing gas, makes the service temperature of system can obtain better distribution, thus ammonia nitrogen in water can be efficiently removed.
Accompanying drawing explanation
Fig. 1 is the treatment facility composition schematic diagram of first embodiment of the invention.
Fig. 2 is the treatment facility composition schematic diagram of second embodiment of the invention.
Fig. 3 is the preferred embodiment composition schematic diagram of gas of the present invention to gas-heat exchanger.
Fig. 4 is the schematic diagram of gas of the present invention to another preferred embodiment of gas-heat exchanger.
Primary clustering nomenclature in accompanying drawing:
Gas stripping column 10; Liquid inlet 11; Liquid exit 12; Gas inlet 13; Pneumatic outlet 14; Air lift room 15; Well heater 20; Hydrogen-catalyst reactor 30; Gas is to gas-heat exchanger 40; Heat exchange unit 41; Snifting valve 50; Liquid is to liquid heat exchanger 60; Intake valve 70; First pipeline P1; Second pipeline P2; 3rd pipeline P3; 4th pipeline P4; 5th pipeline P5; 6th pipeline P6; 7th pipeline P7.
Embodiment
Please refer to Fig. 1.In the first embodiment of the present invention, a kind for the treatment of facility of nitrogen-containing wastewater comprises gas stripping column 10, well heater 20, hydrogen-catalyst reactor 30 and a gas to gas-heat exchanger 40.
This gas stripping column 10 has liquid exit 12, gas inlet 13, liquid inlet 11, pneumatic outlet 14 and an air lift room 15 is communicated with this liquid inlet 11, liquid exit 12, gas inlet 13 and pneumatic outlet 14.
This liquid inlet 11 is that the nitrogen-containing wastewater that confession one is carried via the first pipeline P1 flows into this air lift room 15.As its name suggests, nitrogen-containing wastewater refers to the waste water containing ammonia nitrogen (ammonia nitrogen), and ammonia nitrogen can ammonium ion (NH in water
4 +) or amino molecule (NH
3) form exist, compared to ammonium ion, amino molecule more easily volatilizees, and therefore the pH value of nitrogen-containing wastewater is preferably and is greater than 10, if pH value is higher than when front taking off numerical value, the ammonia in water tends to be existed with the kenel of amino molecule, and is easier to be taken away by stripping gas.Be understandable that, in order to adjust the pH value of nitrogen-containing wastewater to aforementioned preferred values, nitrogen-containing wastewater can also in advance through the process of a pH value adjustment before entering gas stripping column, this process can adjust in pond in a pH and complete, only for the nitrogen-containing wastewater that namely script pH value is greater than 10, this pH value adjustment process is omissible.In a possible embodiment, described nitrogen-containing wastewater also may contain volatile organic compounds, and described volatile organic compounds can be but is not limited to following at least one: acetone, ethanol, ether, methylene dichloride, benzene, toluene and dimethylbenzene.
This gas inlet 13 is that confession one flows into this air lift room 15 via the stripping gas that the second pipeline P2 carries and carries out air lift to nitrogen-containing wastewater, nitrogen-containing wastewater becomes waste water after air lift after air lift, ammonia content after air lift in waste water comparatively nitrogen-containing wastewater significantly reduces, and becomes ammonia-containing gas because stripping gas can take at least part of ammonia in nitrogen-containing wastewater when air lift out of.Occasion containing volatile organic compounds in nitrogen-containing wastewater, at least part of described volatile organic compounds also can be taken out of by stripping gas when air lift, therefore also can contain volatile organic compounds in ammonia-containing gas.
This liquid exit 12 flows out this air lift room 15 for waste water after air lift, and this pneumatic outlet 14 then flows out this air lift room 15 for ammonia-containing gas.
In this preferred embodiment, liquid inlet 11 and pneumatic outlet 14 are the upsides being positioned at air lift room 15, and liquid exit 12 and 13, gas inlet are the downsides being positioned at air lift room 15, make the flow direction of liquid and gas contrary, and promote gas stripping efficiency with this.
This well heater 20 heats described ammonia-containing gas and obtains heated air, and described ammonia-containing gas first enters gas to after gas-heat exchanger 40 through the 3rd pipeline P3, then enters well heater 20 via the 4th pipeline P4.
The described heated air that this hydrogen-catalyst reactor 30 is carried via the 5th pipeline P5 in order to process, makes the ammonia in heated air and other VOC oxidation that may exist and gas after obtaining a process.For ammonia, the catalyzer in described hydrogen-catalyst reactor 30 can be but is not limited to the inorganic materials such as silicon, aluminium, cerium, copper, nickel, zirconium, silver, palladium, platinum, rhodium or its oxide compound.Because the catalyzer of process ammonia or volatile organic compounds is not creation emphasis of the present invention, and be the category of known technology, much more no longer enumerate in this.
Due to meeting heat release during the volatile matter oxidations such as ammonia, therefore after the process after hydrogen-catalyst reactor 30 is oxidized, the temperature of gas is higher, and namely gas be carry out heat exchange in order to order via gas after the 3rd pipeline the P3 described ammonia-containing gas of carrying and the process of carrying via the 6th pipeline P6 to gas-heat exchanger 40.Be understandable that, gas can have one first path and one second path to gas-heat exchanger 40 inside, both are not communicated with in principle, the described ammonia-containing gas system of being flowed out air lift room 10 by pneumatic outlet enters this well heater 20 via this first path, after process after hydrogen-catalyst reactor 30 processes, gas is then imported into second path of gas to gas-heat exchanger 40, carries out heat exchange with ammonia-containing gas.Process gas is after treatment delivered to snifting valve 50 through the 7th pipeline P7 and is partly discharged outside to, and becomes described stripping gas, and re-circulate to gas stripping column 10 via the second pipeline P2 after remaining part then mixes with ambient atmos; Described ambient atmos can be air, and the magnitude of recruitment of ambient atmos can regulate via an intake valve 70.
Wherein, the heat exchanger effectiveness of gas to gas-heat exchanger 40 is total heating value according to described ammonia-containing gas and corresponding adjustment, make described heat exchanger effectiveness correspondingly can turn down along with the rising of described total heating value, or make described heat exchanger effectiveness correspondingly can heighten along with the reduction of described total heating value, that is heat exchanger effectiveness and total heating value are inversely.When described heat exchanger effectiveness is heightened, after process, gaseous interchange is more to the heat energy of ammonia-containing gas; When described heat exchanger effectiveness is turned down, after process, gaseous interchange is less to the heat energy of ammonia-containing gas.Wait design thus, when the total heating value of ammonia-containing gas is higher, the heat exchanger effectiveness of gas to gas-heat exchanger 40 is turned down, after process, gas can not give ammonia-containing gas too many heat energy, to avoid ammonia-containing gas temperature after hydrogen-catalyst reactor 30 processes too high, because easily produce other harmful side products when hydrogen-catalyst reactor 30 temperature is too high; Relatively, when the total heating value of ammonia-containing gas is on the low side, the heat exchanger effectiveness of gas to gas-heat exchanger 40 is heightened, after process, gas gives ammonia-containing gas more heat energy, reduce the burden that well heater 20 additionally supplies heat, and make heated air can maintain comparatively thermophilic degree after hydrogen-catalyst reactor 30 processes.
On the other hand, because nitrogen-containing wastewater becomes the heat that also can absorb stripping gas in the process of waste water after air lift through air lift, therefore after air lift, the temperature of waste water can raise; In order to realize the advantageous configurations of temperature, treatment facility of the present invention can also comprise a liquid to liquid heat exchanger 60, carries out heat exchange, allow nitrogen-containing wastewater heat up in advance in order to waste water after making described nitrogen-containing wastewater and air lift.Because higher temperature can reduce the solubleness of ammonia in water, the ammonia therefore in waste water will more easily be taken out of by stripping gas.
But, if the temperature in gas stripping column 10 is too high, in gas stripping column 10, likely can produce saline crystallization, therefore also need to avoid gas stripping column 10 inner transition to heat up.As aforementioned, because at least one part stripping gas formed by processing rear gas, therefore in the occasion that aforementioned hot exchange efficiency is turned down, the temperature of stripping gas can improve, but too high stripping temperature likely causes producing saline crystallization in gas stripping column 10.In order to solve such problem, the output of gas after the process after heat exchange can be increased, that is allowing gas after more processing discharge via snifting valve 50, such practice can reduce total heat contained by stripping gas, thus improves the situation of the easy excessive temperature rise of gas stripping column 10; Certainly, in order to maintain intrasystem air pressure, when after processing, the output of gas increases, the magnitude of recruitment of ambient atmos also can correspondingly be heightened, and in the present embodiment, the magnitude of recruitment increasing ambient atmos also has other benefits to be, temperature due to ambient atmos is generally normal temperature and lower than the temperature of gas after process, therefore after gas and ambient atmos after process are mixed mutually, the temperature of the stripping gas of gained can reduce (after process gas), thus the auxiliary problem reducing gas stripping column 10 excessive temperature and promote.
On the other hand, if the air lift usefulness of gas stripping column is not enough, that is the ammonia nitrogen concentration of processed waste water not lower than preset value time, can adjust gas to improve gas outlet temperature after the process of gas-heat exchanger, this object can be realized, with this heat exchanger effectiveness of gas-heat exchanger by adjustment gas, the temperature of stripping gas can promote, nitrogen-containing wastewater can be allowed while air lift to be promoted to higher temperature, to allow the ammonia nitrogen in water more easily be taken out of, to increase air lift usefulness.
In the aforementioned embodiment, ambient atmos is that gas just mixes with it after heat exchange after treatment, only in second embodiment of the invention as shown in Figure 2, after ammonia-containing gas also can first mix with ambient atmos, enter gas again to gas-heat exchanger 40, then sequentially process via well heater 20 and hydrogen-catalyst reactor 30 and become the rear gas of process, after described process gas enter gas to gas-heat exchanger 40 and ammonia-containing gas carry out heat exchange, after after process after heat exchange, gas fraction is discharged outside to, remaining part becomes described stripping gas and continues circulation.
As shown in Figure 3, can adjust the heat exchanger effectiveness of gas-heat exchanger 40 to allow gas, described gas can have some heat exchange units 41 to gas-heat exchanger 40, and gas enters wherein heat exchange unit 41 described in and carries out heat exchange after optionally making the ammonia-containing gas of carrying via the 3rd pipeline P3 and the process of carrying via the 6th pipeline P6, thus, by the switching frequency changing heat exchange unit 41, gas can be adjusted the heat exchanger effectiveness of gas-heat exchanger 40.To this, treatment facility of the present invention can also comprise a microcontroller (not illustrating) and a total heating value detecting unit (not illustrating), total heating value detecting unit is in order to detect the total heating value of ammonia-containing gas and to export a total heating value signal to microcontroller, microcontroller is then according to total heating value signal, adjust the switching frequency between heat exchange unit 41 by the keying of control the 3rd, the 6th pipeline P3, P6 valve body, and then realize adjustment gas to the object of the heat exchanger effectiveness of gas-heat exchanger 40.As a kind of possible embodiment, total heating value detecting unit can comprise one to take into account the temperature of measurement ammonia-containing gas thermometer in order to the concentration detecting one or more volatile matter (comprising ammonia and other volatile organic compoundss) concentration, then draws the total heating value of ammonia-containing gas according to measured concentration and temperature conversion again and sends described total heating value signal.
In previous embodiment, heat exchange unit 41 is for two, and in fact the quantity of heat exchange unit 41 also can change into three or more, by the switching frequency between heat exchange unit 41, can realize the object of adjustment heat exchanger effectiveness equally.In addition, gas also can otherwise adjust the heat exchanger effectiveness of gas-heat exchanger 40, such as use rotary heat exchanger as shown in Figure 4 as gas to gas-heat exchanger 40, now can adjust its heat exchanger effectiveness by the runner speed of rotation of adjustment rotary heat exchanger.
Based on previous designs, nitrogen-containing wastewater treatment facility of the present invention can distribute by the heat energy in regulation system, each unit in system is operated under preferably temperature condition, and then promotes the operation usefulness for the treatment of facility, realize the object effectively removing ammonia nitrogen.
Finally, must again illustrate, the construction components that the present invention discloses in previous embodiment is only and illustrates, is not used for limiting the scope of the invention, and substituting or change of other equivalent elements, the right that also should be the present patent application contained.
Claims (8)
1. a treatment facility for nitrogen-containing wastewater, comprising:
One gas stripping column, there is a liquid inlet, one liquid exit, one gas inlet, one pneumatic outlet and an air lift room and this liquid inlet, liquid exit, gas inlet and pneumatic outlet are communicated with, this liquid inlet flows into this air lift room for a nitrogen-containing wastewater, this gas inlet flows into this air lift room for a stripping gas and carry out air lift to nitrogen-containing wastewater, nitrogen-containing wastewater becomes waste water after air lift after air lift, stripping gas is taken the ammonia in nitrogen-containing wastewater out of and becomes ammonia-containing gas when air lift, this pneumatic outlet flows out this air lift room for ammonia-containing gas, this liquid exit is then flow out this air lift room for waste water after air lift,
One well heater, obtains heated air in order to heat described ammonia-containing gas;
One hydrogen-catalyst reactor, in order to process described heated air, makes the ammonia oxidation in heated air and gas after obtaining a process; And
One gas is to gas-heat exchanger, its inside has one first path and one second path, the described ammonia-containing gas being flowed out air lift room by pneumatic outlet enters this well heater via this gas to the first path of gas-heat exchanger, after process after hydrogen-catalyst reactor process, gas is then imported into second path of gas to gas-heat exchanger, heat exchange is carried out in order to make the rear gas of described ammonia-containing gas and process, after the process of heat exchange, gas fraction is discharged outside to, and becomes described stripping gas after remaining part mixes with ambient atmos;
Wherein, the heat exchanger effectiveness of gas to gas-heat exchanger is total heating value according to described ammonia-containing gas and corresponding adjustment, make described heat exchanger effectiveness correspondingly turn down along with the rising of described total heating value, or make described heat exchanger effectiveness correspondingly heighten along with the reduction of described total heating value.
2. a treatment facility for nitrogen-containing wastewater, comprising:
One gas stripping column, there is a liquid inlet, one liquid exit, one gas inlet, one pneumatic outlet and an air lift room and this liquid inlet, liquid exit, gas inlet and pneumatic outlet are communicated with, this liquid inlet flows into this air lift room for a nitrogen-containing wastewater, this pneumatic outlet flows into this air lift room for a stripping gas and carry out air lift to nitrogen-containing wastewater, nitrogen-containing wastewater becomes waste water after air lift after air lift, stripping gas is taken the ammonia in nitrogen-containing wastewater out of and becomes ammonia-containing gas when air lift, this liquid exit flows out this air lift room for waste water after air lift, this pneumatic outlet is then flow out this air lift room for ammonia-containing gas, described ammonia-containing gas mixes with ambient atmos behind this air lift room of outflow,
One well heater, in order to be mixed with the ammonia-containing gas of ambient atmos described in heating and to obtain heated air;
One hydrogen-catalyst reactor, in order to process described heated air, makes the ammonia oxidation in heated air and gas after obtaining a process;
One gas is to gas-heat exchanger, its inside has one first path and one second path, the described ammonia-containing gas being mixed with ambient atmos enters this well heater via this gas to the first path of gas-heat exchanger, after process after hydrogen-catalyst reactor process, gas is then imported into second path of gas to gas-heat exchanger, heat exchange is carried out in order to make the rear gas of described ammonia-containing gas and process, after the process of heat exchange, gas fraction is discharged outside to, and remaining part becomes described stripping gas;
Wherein, gas is to heat exchanger effectiveness system corresponding adjustment according to the total heating value of described ammonia-containing gas of gas-heat exchanger, make described heat exchanger effectiveness correspondingly turn down along with the rising of described total heating value, or make described heat exchanger effectiveness correspondingly heighten along with the reduction of described total heating value.
3. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, this gas has some heat exchange units to gas-heat exchanger, and after optionally making described ammonia-containing gas and process, gas enters wherein heat exchange unit described in and carries out heat exchange.
4. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, this gas is a rotary heat exchanger to gas-heat exchanger.
5. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, comprises a liquid to liquid heat exchanger, carries out heat exchange in order to waste water after making described nitrogen-containing wastewater and air lift.
6. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, described nitrogen-containing wastewater contains volatile organic compounds, and at least part of described volatile organic compounds is taken out of by stripping gas when air lift.
7. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, the pH value of described nitrogen-containing wastewater is greater than 10.
8. the treatment facility of nitrogen-containing wastewater according to claim 1 or 2, wherein, when described heat exchanger effectiveness along with total heating value raise and corresponding turn down time, increase the output of gas and the magnitude of recruitment of ambient atmos after the process after heat exchange.
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| CN201410078586.3A CN104891592B (en) | 2014-03-05 | 2014-03-05 | The processing equipment of nitrogen-containing wastewater |
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| CN201410078586.3A CN104891592B (en) | 2014-03-05 | 2014-03-05 | The processing equipment of nitrogen-containing wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293609A (en) * | 2015-11-03 | 2016-02-03 | 浙江工业大学 | Supergravity integrating and reinforcing system and technique for recycling ammonia-nitrogen wastewater |
| CN107963739A (en) * | 2017-11-28 | 2018-04-27 | 江苏汉微纳米材料有限公司 | A kind of processing system and its method of the waste water of heterogeneous system containing ammonia |
| CN112551776A (en) * | 2020-11-17 | 2021-03-26 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182063A (en) * | 2007-10-29 | 2008-05-21 | 太原海力丰科技发展有限公司 | Method for purifying carbamide polluted water |
| CN203768058U (en) * | 2014-03-05 | 2014-08-13 | 东虹工程股份有限公司 | Ammonia-nitrogen-containing wastewater treatment equipment |
-
2014
- 2014-03-05 CN CN201410078586.3A patent/CN104891592B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105293609A (en) * | 2015-11-03 | 2016-02-03 | 浙江工业大学 | Supergravity integrating and reinforcing system and technique for recycling ammonia-nitrogen wastewater |
| CN105293609B (en) * | 2015-11-03 | 2017-09-12 | 浙江工业大学 | A kind of hypergravity of ammonia nitrogen waste water recycling is integrated and consolidation system and technique |
| CN107963739A (en) * | 2017-11-28 | 2018-04-27 | 江苏汉微纳米材料有限公司 | A kind of processing system and its method of the waste water of heterogeneous system containing ammonia |
| CN112551776A (en) * | 2020-11-17 | 2021-03-26 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
| CN112551776B (en) * | 2020-11-17 | 2024-02-02 | 西安净源水处理科技有限公司 | High-concentration ammonia nitrogen wastewater treatment equipment and process |
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