CN203639237U - Combined type half-nitrification-anaerobic ammonia oxidization autotrophic nitrogen removal device - Google Patents
Combined type half-nitrification-anaerobic ammonia oxidization autotrophic nitrogen removal device Download PDFInfo
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- CN203639237U CN203639237U CN201320809465.2U CN201320809465U CN203639237U CN 203639237 U CN203639237 U CN 203639237U CN 201320809465 U CN201320809465 U CN 201320809465U CN 203639237 U CN203639237 U CN 203639237U
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Abstract
The utility model provides a combined type half-nitrification-anaerobic ammonia oxidization autotrophic nitrogen removal device, which is mainly characterized in that a reactor is formed by stacking an upper section and a lower section, the upper section adopts a fixed-bed reactor type, namely a biomembrane component is arranged on the upper section, the lower section adopts a fluidized-bed reactor type, the fluidized strengthening effect of free-state granule sludge can be realized through the action of mechanical agitation action of a stirring paddle, a constant-temperature circulating water tank is communicated with a hollow space through a pipeline, and the hollow space is formed between an inner drum and an outer drum of the reactor. When the device is used for performing sewage treatment, the device is firstly started and then regulated and run; and the removal rate of ammonia nitrogen can achieve 90%, and the total nitrogen removal rate can achieve more than 80%.
Description
Technical field
The utility model belongs to biochemical process technical field of sewage, a kind of combined type SHARON-ANAMMOX autotrophic denitrification device using while being specifically related to dispose of sewage.
Background technology
China's ammonia and nitrogen pollution situation is increasingly serious, and quantity discharged is far beyond the environmental capacity of receiving water body, and the environmental problem of bringing has thus caused showing great attention to of each side.In " 12 " planning, the newly-increased ammonia nitrogen of country reduces discharging the binding indicator, and this is not only provided with higher threshold to the discharge of each source of pollution enterprise ammonia nitrogen, also Pollution abatement technological process and state of the art is had higher requirement.But traditional denitrification process is many based on nitrated-denitrification principle, though brought into play vital role in biological denitrificaion field, has the problems such as technical process is long, energy consumption is high.Therefore, the new device system tool of exploitation based on denitrogenation new approaches, new technology is of great significance.
In recent years, many countries have strengthened the research to biological denitrificaion, and have all obtained certain breakthrough theoretical and technical.A kind of brand-new biochemical reaction---Anammox (anaerobic ammonia oxidation, ANAMMOX) discovery, not only reform the cognition of people to nitrogen transformation way, simultaneously, as the shortcut reaction of nitrated denitrogenation, also break through traditional nitrated-denitrifying basic theories, shorten response path, the cost payout being caused by operations such as adding external carbon source, chemical neutralizer be can save, an economy, efficient, continuable denitrogenation path are considered to.The one-step autotrophic nitrogen removal technique of half nitration reaction that has more particularly been coupled, by condition control, aerobic ammonia-oxidizing bacteria and anaerobic ammonia oxidizing bacteria are coexisted in a habitat, in same reactor, carry out short distance nitration and Anammox, realize whole process autotrophic biological denitrificaion.These one-step autotrophic bio-denitrification technologies not only made up traditional nitrated-defect of denitrification process, improve nitric efficiency, also have occupation of land less, the advantages such as low, excess sludge production is few that consume energy, reduced cost for wastewater treatment, be to have one of denitride technology of potentiality future.
At present, the reactor used traditional reactor that nearly all derives from of single-stage SHARON-ANAMMOX autotrophic denitrification technique of having reported, comprises two kinds of patterns of fixed-bed reactor and fluidized-bed reactor, and it is used in and in such technique, mainly has following problem:
(1) fixed bed pattern reactor has effectively improved the biological retentivity of system, but along with the increase of film thickness, easily stops up, and affects mass transfer effect;
(2) when the gaseous product reacting in fixed-bed reactor is stranded between mud layer with the form of air pocket, by obstruction matrix flow and be uniformly distributed;
(3) compare fixed bed, fluidized state can make the interior matter distribution of reactor more even, and mass transfer effect obviously improves, but in the time that gaseous product blocks in granule sludge, can cause granule sludge floating or run off, and then affects the treatment effect of system.
Utility model content
The utility model is for solving the problems of the technologies described above, propose a kind of high-concentration ammonia nitrogenous wastewater that is suitable for and process the combined type SHARON-ANAMMOX device using, by rational structure of reactor and operation method, for the metabolism and growth of functional flora provides suitable steric requirements, to obtain higher nitric efficiency.The overall structure of this kind of device as shown in Figure 1, mainly by water tank inlet, intake pump, reactor, settling tank, constant temperature circulating water tank, air pump, sludge reflux pump, online pH regulator device, enter alkali pump, dosing tank, the online dissolved oxygen meter in aerobic zone, the online dissolved oxygen meter in oxygen-starved area, mixing control device and form, inside reactor is provided with biological membrane assembly, airway, triphase separator, annular micropore aeration pipe, stir shaft, stirring rake.
Described water tank inlet stores high-concentration ammonia nitrogenous wastewater, and is communicated with reactor by intake pump and inlet channel, and intake pump is used for controlling wastewater flow, and settling tank bottom and sludge reflux pump are connected, and its top is connected with reactor by pipeline; Air pump is connected with annular micropore aeration pipe by corresponding pipeline, and to oxygen supply in reactor, pH regulator device is connected with dosing tank by entering alkali pump, the alkali lye of dosing tank storage human configuration.
In described reactor macroscopic view, form by two sections are stacking, every section by inner core and two part compositions of urceolus; Epimere adopts fixed-bed reactor pattern, at this section, biological membrane assembly is set, hypomere adopts fluidized-bed reactor pattern, constant temperature circulating water tank is communicated with by the hollow space forming between pipeline and inner core, urceolus, between inner/outer tube, fill thermostatical circulating water, to keep temperature in reactor within preset range; There is dissolved oxygen gradient in the inner core of reactor, form microbial film aerobic zone, top, granule sludge oxygen-starved area, bottom in its vertical direction; Microbial film aerobic zone, described top is provided with annular micropore aeration pipe, along reactor wall uniform aeration, and the online dissolved oxygen meter in aerobic zone is installed; Described middle part zone of transition arranges triphase separator, and triphase separator is made up of gas skirt, flow deflector, and gas skirt is fixed on reactor wall by clamping plate, and is communicated with airway, and airway is arranged on the axis of reactor; Granule sludge oxygen-starved area, described bottom adopts fluidized-bed reactor pattern, and the granule sludge of free state is realized fluidised strengthening effect by the mechanical agitation of stirring rake, the probe of the online dissolved oxygen meter in oxygen-starved area from be deep into this region; Reactor top is provided with installation lead angle, prevents the generation at current dead angle with it.
In aforementioned: the aspect ratio of described reactor is 4.2, epimere fixed-bed reactor, hypomere fluidized-bed reactor all account for 50% of total reactor height, microbial film aerobic zone height is about the 30%-40% of inner core height, middle part zone of transition height is about 20% of inner core height, and granule sludge oxygen-starved area height is about the 40%-50% of inner core height.
Described biological membrane assembly is combined by filler and skeleton frame, be vertically placed on microbial film district, airway outer wall is fixed in binding, horizontal plane is rotary emission shape, use the polypropylene fibre filler of the about 1cm of single staple length to form microbial film, filler is wrapped on skeleton frame, the 60%-70% that filler packing ratio is this region.
Described annular micropore aeration pipe is positioned over angle, triphase separator bottom.
Described stir shaft is arranged on reactor body axis, apart from 15% At The Height of bottom, stirring rake is installed, and stirring rake is synchronous rotary under the drive of stir shaft, by mixing control device control rotating speed.
Described sludge reflux pump is communicated with settling tank bottom, need make returned sluge and water inlet keep the reflux ratio of 1:1 by adjusting.
Described pH regulator device is provided with pH and enters alkali threshold value, pumps into additional alkali lye adjustment and maintains inside reactor pH value by entering alkali pump.
The operation method of above-mentioned combined type SHARON-ANAMMOX device, its feature comprises the following steps:
(1) starter gear: seed sludge has Anammox mud and nitrifying sludge two classes, after evenly mixing according to certain ratio, add reactor inner core, for reactor provides the initial Anammox sludge concentration of 2.7g-MLSS/L and the initial nitrification sludge concentration of 0.5g-MLSS/L; Then pass into the simulated wastewater of human configuration, its component is: NH
4 +-N50-200mg/L, KHCO
3500mg/L, KH
2pO
454mg/L, FeSO
47H
2o9mg/L, EDTA5mg/L, CaCl
24mg/L, MgSO
47H
2o4mg/L, CoCl
26H
2o1mg/L, NaCl4mg/L; Waste water enters from reactor bottom, then enter fixed bed by the gap between gas skirt and flow deflector, rise to behind top by aeration effect, a part of current are turned back, decline and enter fluidized-bed formation circulation through airway, another part enters settling tank by water outlet; Aerobic section Dissolved Oxygen concentration Control is at 1-2mg/L, and anoxic section Dissolved Oxygen concentration Control is at 0-0.5mg/L, and reactor operating parameter is pH value 7.4-7.6, temperature of reactor 33-37 ℃; In the time that nitrogen removal rate reaches 80%, think and start successfully;
(2) regulation and control operation: aerobic section Dissolved Oxygen concentration Control is at 1-2mg/L, and anoxic section Dissolved Oxygen concentration Control is at 0-0.5mg/L.Adopt continuous water intake mode, manual simulation's waste water component is NH
4 +-N200-1000mg/L, KHCO
3500mg/L, KH
2pO
454mg/L, FeSO
47H
2o9mg/L, EDTA5mg/L, CaCl
24mg/L, MgSO
47H
2o4mg/L, CoCl
26H
2o1mg/L, NaCl4mg/L; Reactor operating parameter is pH value 7.4-7.6, and temperature of reactor 33-37 ℃, as water inlet NH
4 +when-N is 200-400mg/L, hydraulic detention time is 2.3-7.2h; As water inlet NH
4 +when-N is 400-1000mg/L, hydraulic detention time is 7.2-15.4h; Monitor ammonia nitrogen, nitrite nitrogen, the nitre nitrogen concentration of reactor water inlet and water outlet every day, continuous three days stable and ammonia nitrogen removal franks of reactor water outlet data (ammonia nitrogen, nitrite nitrogen, nitre nitrogen concentration) reach 90%, nitrogen removal rate reaches 80% when above, improve reactor load by the mode of increase influent concentration or increase flow (reduction hydraulic detention time).
Compared with prior art, the beneficial effects of the utility model are embodied in:
(1) the reactor configuration the utility model proposes has followed the advantage of fixed-bed reactor and fluidized-bed reactor, utilize two kinds of microorganism fixing means of microbial film and granule sludge, having strengthened mud holds and stays, large limit ground has reduced sludge loss, maintain functional flora amount in reactor, guarantee the efficient operation of single-stage SHARON-ANAMMOX denitrification process; Make up mutually again deficiency simultaneously, adopt fixed bed underlying fluidized-bed, mass-transfer efficiency and sludge concentration while comparing independent use fixed-bed reactor, are improved, can reduce the microbial biomass of fixed bed part simultaneously, controlling diaphragm thickness, to reach good gas separation effect, the problems such as the easy obstruction of fixed bed are solved;
(2) reactor lower part increases mechanical stirring, can prevent that the short stream of the not good reactor causing of fluidized-bed reactor macroscopic view and microcosmic air guide, gas from gushing and the phenomenon such as granule sludge floating.Under stronger shear action, together with ammonia oxidation bacteria is accumulated in rapidly with anaerobic ammonia oxidizing bacteria, make granule sludge accelerate to form, and close structure, size are suitably, there is good settling property, also can remove the excessive discharge of generation gas, the matrix causing of particle diameter and import restriction into, improve the mass transfer effect of reactor;
(3) in reactor, have dissolved oxygen gradient, make reactor form microbial film aerobic zone, top, middle part zone of transition, granule sludge oxygen-starved area, bottom, the suitable film thickness in aerobic zone, top makes microbial film take ammonia oxidation bacteria as dominant microflora, completes half nitrifying process; And the form of taking oxygen with a small amount of water when current is while entering oxygen-starved area, granule sludge forms the synusia structure of outer wrap ammonia oxidation bacteria, inner anaerobic ammonia oxidizing bacteria (due to dissolved oxygen concentration and mass transfer limit, mud inside can form large-area anaerobic zone), therefore, bottom granule sludge is to complete anaerobic ammonium oxidation process as main.This existence form of fluidized-bed mud has not only removed for Anammox reaction the residue dissolved oxygen murder by poisoning that top water stream carries, and can assist again anaerobic ammonium oxidation granular sludge to strengthen anti impulsion load ability.So, in reactor macroscopic view, be equivalent to longitudinal stack of half nitrator and anaerobic ammonia oxidation reactor, also half nitrated realization in intercoupling in a reactor with anaerobic ammonium oxidation process separates along journey, optimize the microenvironment that coexists of two class functional floras, thereby given reactor efficient nitrogen removal performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model device.
Fig. 2 is triphase separator and the local mode of connection schematic diagram of reactor inner core in the utility model device.
Fig. 3 is triphase separator and reactor inner core mode of connection schematic cross section in the utility model device.
In Fig. 1: 1 is water tank inlet; 2 is intake pump; 3 is that combined type half is nitrated for anaerobic ammonia oxidation reactor; 4 is settling tank; 5 is constant temperature circulating water tank; 6 is air pump; 7 is sludge reflux pump; 8 is online pH regulator device; 9 for entering alkali pump; 10 is dosing tank; 11 is that the online dissolved oxygen meter in aerobic zone, 12 is the online dissolved oxygen meter in oxygen-starved area; 13 is mixing control device; 14 is biological membrane assembly; 15 is airway; 16 is triphase separator; 16-1 is gas skirt; 16-2 is flow deflector; 17 is annular micropore aeration pipe; 18 is stir shaft; 19 is stirring rake; 20,21 is reactor inner core; 22,23 is reactor urceolus; 24 is clamping plate; 25 is lead angle.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further:
1. a combined type SHARON-ANAMMOX autotrophic denitrification device, it is characterized in that this device is provided with water tank inlet 1, intake pump 2, reactor 3, settling tank 4, constant temperature circulating water tank 5, air pump 6, sludge reflux pump 7, online pH regulator device 8, enters alkali pump 9, dosing tank 10, the online dissolved oxygen meter 11 in aerobic zone, the online dissolved oxygen meter 12 in oxygen-starved area, mixing control device 13, reactor 3 inside are provided with biological membrane assembly 14, airway 15, triphase separator 16, annular micropore aeration pipe 17, stir shaft 18, stirring rake 19; Described water tank inlet 1 stores high-concentration ammonia nitrogenous wastewater, and is communicated with reactor 3 by intake pump 2 and inlet channel, and intake pump 2 is for controlling wastewater flow; The bottom of settling tank 4 and sludge reflux pump 7 are connected, and its top is connected with reactor 3 by pipeline; Air pump 6 is connected with annular micropore aeration pipe 17 by corresponding pipeline, is responsible for to the interior oxygen supply of reactor 3, and pH regulator device 8 is connected with dosing tank 10 by entering alkali pump 9, and dosing tank 10 stores the alkali lye of human configuration; Described reactor 3 macroscopic views are upper to be formed by ring flange is stacking by two sections, and every section by its inner core 20,21 and 22,23 two part compositions of urceolus; Epimere adopts fixed-bed reactor pattern, at this section, biological membrane assembly 14 is set, hypomere adopts fluidized-bed reactor pattern, be communicated with by the hollow space of formation between pipeline and inner core 20,21, urceolus 22,23 with the constant temperature circulating water tank 5 of heating function, between inner/outer tube, fill thermostatical circulating water, to keep temperature in reactor 3 within preset range; In its vertical direction, there is dissolved oxygen gradient in the inner core 20,21 of reactor 3, form microbial film aerobic zone, top, middle part zone of transition and granule sludge oxygen-starved area, bottom, microbial film aerobic zone, described top is provided with annular micropore aeration pipe 17, along reactor wall uniform aeration, and the online dissolved oxygen meter 11 in aerobic zone is installed; Described middle part zone of transition arranges triphase separator 16, triphase separator 16 is made up of gas skirt 16-1, flow deflector 16-2, gas skirt 16-1 is fixed on the inwall of reactor 3 by self set clamping plate 24, and is communicated with airway 15, and airway 15 is arranged on the axis of reactor 3; Granule sludge oxygen-starved area, described bottom adopts fluidized-bed reactor pattern, and the granule sludge of free state is realized fluidised strengthening effect by the mechanical agitation of stirring rake 19, the probe of the online dissolved oxygen meter 12 in oxygen-starved area from be deep into this region; Reactor top is provided with installs lead angle 25, prevents the generation at current dead angle with it; The aspect ratio of described reactor 3 is 4.2, epimere fixed-bed reactor, hypomere fluidized-bed reactor all account for 50% of total reactor height, microbial film aerobic zone height is about the 30%-40% of inner core height, middle part zone of transition height is about 20% of inner core height, and granule sludge oxygen-starved area height is about the 40%-50% of inner core height; Described biological membrane assembly 14 is combined by filler and skeleton frame, be vertically placed on microbial film district, airway 15 outer walls are fixed in binding, horizontal plane is rotary emission shape, use the polypropylene fibre filler of the about 1cm of single staple length to form microbial film, filler is wrapped on skeleton frame, the 60%-70% that filler packing ratio is this region; Described annular micropore aeration pipe 17 is positioned over triphase separator 16 angles, bottom; Described stir shaft 18 is arranged on reactor body axis, apart from 15% At The Height of bottom, stirring rake 19 is installed, and stirring rake 19 is synchronous rotary under the drive of stir shaft 18, controls rotating speed by mixing control device 13; Described sludge reflux pump 7 is communicated with settling tank 4 bottoms, need make returned sluge and water inlet keep the reflux ratio of 1:1 by adjusting; Described pH regulator device 8 is provided with pH and enters alkali threshold value, pumps into additional alkali lye adjustment and maintains inside reactor pH value by entering alkali pump 9.
Use above-mentioned combined type SHARON-ANAMMOX autotrophic denitrification device, adopt following operation method, specifically comprise the following steps:
(1) starter gear: seed sludge has Anammox mud and nitrifying sludge two classes, after evenly mixing according to certain ratio, add reactor inner core, for reactor provides the initial Anammox sludge concentration of 2.7g-MLSS/L and the initial nitrification sludge concentration of 0.5g-MLSS/L; Then pass into the simulated wastewater of human configuration, its component is: NH
4 +-N50-200mg/L, KHCO
3500mg/L, KH
2pO
454mg/L, FeSO
47H
2o9mg/L, EDTA5mg/L, CaCl
24mg/L, MgSO
47H
2o4mg/L, CoCl
26H
2o1mg/L, NaCl4mg/L; Waste water enters from reactor bottom, then enter fixed bed by the gap between gas skirt 16-1 and flow deflector 16-2, rise to behind top by aeration effect, a part of current are turned back, decline and enter fluidized-bed formation circulation through airway 15, another part enters settling tank by water outlet; Aerobic section Dissolved Oxygen concentration Control is at 1-2mg/L, and anoxic section Dissolved Oxygen concentration Control is at 0-0.5mg/L, and reactor operating parameter is pH value 7.4-7.6, temperature of reactor 33-37 ℃; In the time that nitrogen removal rate reaches 80%, think and start successfully;
(2) regulation and control operation: aerobic section Dissolved Oxygen concentration Control is at 1-2mg/L, and anoxic section Dissolved Oxygen concentration Control is at 0-0.5mg/L; Adopt continuous water intake mode, manual simulation's waste water component is NH
4 +-N200-1000mg/L, KHCO
3500mg/L, KH
2pO
454mg/L, FeSO
47H
2o9mg/L, EDTA5mg/L, CaCl
24mg/L, MgSO
47H
2o4mg/L, CoCl
26H
2o1mg/L, NaCl4mg/L; Reactor operating parameter is pH value 7.4-7.6, and temperature of reactor 33-37 ℃, as water inlet NH
4 +when-N is 200-400mg/L, hydraulic detention time is 2.3-7.2h; As water inlet NH
4 +when-N is 400-1000mg/L, hydraulic detention time is 7.2-15.4h; Monitor ammonia nitrogen, nitrite nitrogen, the nitre nitrogen concentration of reactor water inlet and water outlet every day, continuous three days stable and ammonia nitrogen removal franks of reactor water outlet data (ammonia nitrogen, nitrite nitrogen, nitre nitrogen concentration) reach 90%, nitrogen removal rate reaches 80% when above, improve reactor load by the mode that increases influent concentration or increase flow (reduction hydraulic detention time), NLR can reach 3.5Kg-N/(m
3d), NRR reaches 2.7Kg-N/(m
3d).
Claims (1)
1. a combined type SHARON-ANAMMOX autotrophic denitrification device, it is characterized in that, this device is provided with water tank inlet (1), intake pump (2), reactor (3), settling tank (4), constant temperature circulating water tank (5), air pump (6), sludge reflux pump (7), online pH regulator device (8), enter alkali pump (9), dosing tank (10), the online dissolved oxygen meter in aerobic zone (11), the online dissolved oxygen meter in oxygen-starved area (12), mixing control device (13), reactor (3) inside is provided with biological membrane assembly (14), airway (15), triphase separator (16), annular micropore aeration pipe (17), stir shaft (18), stirring rake (19), described water tank inlet (1) stores high-concentration ammonia nitrogenous wastewater, and is communicated with reactor (3) by intake pump (2) and inlet channel, and intake pump (2) is for controlling wastewater flow, the bottom of settling tank (4) and sludge reflux pump (7) are connected, and its top is connected by the same reactor of pipeline (3), air pump (6) is connected with annular micropore aeration pipe (17) by corresponding pipeline, is responsible for to the interior oxygen supply of reactor (3), and pH regulator device (8) is connected with dosing tank (10) by entering alkali pump (9), and dosing tank (10) stores the alkali lye of human configuration, in described reactor (3) macroscopic view, formed by ring flange is stacking by two sections, every section by its inner core (20,21) and two part compositions of urceolus (22,23), epimere adopts fixed-bed reactor pattern, at this section, biological membrane assembly (14) is set, hypomere adopts fluidized-bed reactor pattern, be communicated with by the hollow space forming between pipeline and inner core (20,21), urceolus (22,23) with the constant temperature circulating water tank (5) of heating function, between inner/outer tube, fill thermostatical circulating water, to keep the interior temperature of reactor (3) within preset range, in its vertical direction, there is dissolved oxygen gradient in the inner core (20,21) of reactor (3), form microbial film aerobic zone, top, middle part zone of transition and granule sludge oxygen-starved area, bottom, microbial film aerobic zone, described top is provided with annular micropore aeration pipe (17), along reactor wall uniform aeration, and the online dissolved oxygen meter in aerobic zone (11) is installed, described middle part zone of transition arranges triphase separator (16), triphase separator (16) is made up of gas skirt (16-1), flow deflector (16-2), gas skirt (16-1) is fixed on the inwall of reactor (3) by self set clamping plate (24), and be communicated with airway (15), airway (15) is arranged on the axis of reactor (3), granule sludge oxygen-starved area, described bottom adopts fluidized-bed reactor pattern, the granule sludge of free state is realized fluidised strengthening effect by the mechanical agitation of stirring rake (19), the probe of the online dissolved oxygen meter in oxygen-starved area (12) from be deep into this region, reactor top is provided with installs lead angle (25), prevents the generation at current dead angle with it, the aspect ratio of described reactor (3) is 4.2, epimere fixed-bed reactor, hypomere fluidized-bed reactor all account for 50% of total reactor height, microbial film aerobic zone height is about the 30%-40% of inner core height, middle part zone of transition height is about 20% of inner core height, and granule sludge oxygen-starved area height is about the 40%-50% of inner core height, described biological membrane assembly (14) is combined by filler and skeleton frame, be vertically placed on microbial film district, airway (15) outer wall is fixed in binding, horizontal plane is rotary emission shape, use the polypropylene fibre filler of the about 1cm of single staple length to form microbial film, filler is wrapped on skeleton frame, the 60%-70% that filler packing ratio is this region, described annular micropore aeration pipe (17) is positioned over triphase separator (16) angle, bottom, described stir shaft (18) is arranged on reactor body axis, apart from 15% At The Height of bottom, stirring rake (19) is installed, and stirring rake (19) synchronous rotary under the drive of stir shaft (18), controls rotating speed by mixing control device (13), described sludge reflux pump (7) is communicated with settling tank (4) bottom, need make returned sluge and water inlet keep the reflux ratio of 1:1 by adjusting, described pH regulator device (8) is provided with pH and enters alkali threshold value, pumps into additional alkali lye adjustment and maintains inside reactor pH value by entering alkali pump (9).
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CN104556380A (en) * | 2015-01-05 | 2015-04-29 | 江苏苏亿环境工程有限公司 | Multifunctional sludge nitrification biological filter tower |
CN105254011A (en) * | 2015-11-12 | 2016-01-20 | 山东大学 | Reactor capable of quickly starting anaerobic ammonia oxidation coupling nitrosation reaction and quick-start method |
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