CN106698655A - Wastewater denitrification nitrogen removal treatment device and method - Google Patents
Wastewater denitrification nitrogen removal treatment device and method Download PDFInfo
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- CN106698655A CN106698655A CN201510795221.7A CN201510795221A CN106698655A CN 106698655 A CN106698655 A CN 106698655A CN 201510795221 A CN201510795221 A CN 201510795221A CN 106698655 A CN106698655 A CN 106698655A
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Abstract
The invention discloses a wastewater denitrification nitrogen removal treatment device and method. The wastewater denitrification nitrogen removal treatment device mainly comprises an oxygen-poor expansion bed, a feeding pump, a circulating pump, a feeding tank, an air floatation tank, a heating pump, a heater and a control data cabinet. The oxygen-poor expansion bed is operated at an expansion state through regulating and controlling the flow of circulating water, cutting-off of the water is avoided, and removing loads of organic matters and nitrate are improved. The oxygen-poor expansion bed has the advantages of large height-diameter ratio, small occupied area, high sewage treatment efficiency, high impact resistance, short retention time, simplicity and convenience for operation, high economic benefits and wide application prospects.
Description
Technical field
The invention belongs to chemical industry and environmental technology field, and in particular to a kind of for wastewater treatment
Anoxic expanded bed device and method.
Background technology
In recent years, the pollution of nitrogen has turned into one of social hotspots in water treatment field.With China
Body eutrophication problem is on the rise, and sewage drainage standard lifting, nitrogen in water
One of the Important Problems of removal as water treatment field concern.It is how economical, efficiently and safely
Nitrate nitrogen is removed from water, the sewage water intensification denitrification technology of efficient stable is researched and developed, it has also become be dirty
Water treatment field is badly in need of the technical problem for solving.
Current sewage disposal faces high standard emission request, such as U.S., the water outlet of country of Canada
Standard is that TN (total nitrogen) is less than 3mg/L.Currently for the main side of nitrate removal in water
Method includes：Electronation, counter-infiltration, electrodialysis, ion exchange, biological denitrification (including
Autotrophy and heterotrophic denitrification) etc. method.
Chemical reduction method mainly uses reducing agent to reduce nitrate nitrogen, according to the difference for using
Reducing agent can be divided into active metal reducing process and catalytic reduction method；The former is with iron, aluminium, zinc
It is reducing agent Deng metal simple-substance, treatment effect is poor, and has nitrite generation；The latter with
Hydrogen and formic acid, methyl alcohol etc. are reducing agent, typically all must can just be made with the presence of catalyst anti-
Should carry out, it is relatively costly, and it is dangerous to there is guarantee in the application process of hydrogen.
Although the nitric acid that the methods such as counter-infiltration, electrodialysis, ion exchange can be effectively gone in water removal
Salt, but it is relatively costly, while a large amount of waste water can be produced, therefore using less in Practical Project.
Biological denitrification method is received significant attention so that its processing cost is low, and denitrification process is with organic
Used as electron donor, using nitrate nitrogen as electron acceptor, denitrification nitrate nitrogen is nitrogen to carbon source etc.,
Reach the purpose of nitrogen in removal sewage.Being usually used in the technique of sewage denitrification denitrogenation at present includes living
Property sludge, suspended carrier bio-film process and traditional sand filtration denitrification denitrogenation technique etc..
Activated sludge process sludge concentration is low, it is impossible to process high load capacity sewage, and sludge easily expand,
Floor space is big, need extensive settling apparatus, surplus sludge volume big.Suspended filler biofilm
It, to the filler that certain metric density is added in reactor close to water, is that the growth of microorganism is carried that method is
For habitat, it will improve biomass and biological species in reactor, and then improve reactor
Treatment effeciency.Suspended carrier bio-film process has that treatment effeciency is high, denitrification effect is good, operation is simple
Single the features such as.But carry out denitrification only with floating stuffing, water outlet contain higher concentration
Grain material and suspended material, cause turbidity higher.In traditional sand filtration denitrification denitrogenation technique because
For the packing densities such as sandstone are larger, so relative filling rate is relatively low, to reactor effective rate of utilization
Also it is corresponding to reduce, while easily causing blocking during process operation, it is unfavorable for process operation.
Therefore, for the removal technology situation of nitrate in current water process, research and development are needed badly a kind of
New enhanced biological denitrification device, realizes nitre in economy, efficiently and safely removal sewage
The purpose of hydrochlorate and reduction total nitrogen.
The content of the invention
To achieve the above objectives, the present invention is adopted the technical scheme that：
A kind of anoxic expanded bed, the anoxic expanded bed 3 is followed successively by reaction zone, connects from bottom to top
Section and exhalant region 20 are connect, reaction zone and exhalant region 20 are connected by linkage section；
Cross-sectional area of the cross-sectional area of the exhalant region 20 more than reaction zone；
The bottom of the reaction zone is provided with water inlet 17；
The top of the water inlet 17 is provided with and graded gravel is loaded in supporting layer 18, supporting layer 18
Particle；
It is a diameter of that the top of the supporting layer 18 is provided with filling in packing area 19, packing area 19
The small particle size filler of 1-3mm；
The top perimeter of the exhalant region 20 sets water leg 27, the side wall of the top of water leg 27
Downflow weir 21 is set；
The side wall upper part of the exhalant region 20 also sets up the delivery port 26 with the UNICOM of water leg 27；
The center of the exhalant region 20 is centrally located three phase separator 23；
Circulating water intake pipe 22 is set in the exhalant region 20.
The outside of the reaction zone is provided with chuck, and the bottom of chuck is provided with heating water inlet 29,
The top of chuck is provided with heated water outlet 30.
The side wall of the linkage section is provided with mud discharging mouth 28.
The coupling part flare of the linkage section and exhalant region 20.
The three phase separator 23 includes central tube 23-a, in the connection of central tube 23-a lower ports
Portion cover body 23-b, top cover body 23-b is connected with bottom cover body 23-c by connector 23-d,
And constitute flow channels；Top cover body 23-b and bottom cover body 23-c is in horn-like, and enlarging
End is downward.
The ratio between the thickness of packing area 19 and the cross-sectional diameter of packing area 19 >=2.
A kind of waste water denitrification denitrogenation processing unit, using above-mentioned anoxic expanded bed 3, also wraps
Feed pump 12 is included, the water inlet 17 of anoxic expanded bed 3 is connected by pipeline,
Circulating pump 13, water inlet 17 and the circulation of anoxic expanded bed 3 are connected by pipeline respectively
Water inlet pipe 22,
Head tank 10, connects feed pump 12, and head tank 10 is provided with low liquid level warning device 11,
Floating gas tank 2, the upper port of central tube 23-a is connected by pipeline,
Online gas meter 6, is connected with floating gas tank 2, floats gas tank 2 and online gas dosing
Solenoid electric valve 1 is provided between instrument 6,
Heat pump 14, is connected with the heating water inlet 29 of anoxic expanded bed 3,
Heater 15, one end is connected with heat pump 14, and one end is connected with heated water outlet 30,
Heater 15 is provided with temperature overheating sensor 7,
Temperature digital display sensor 4, its temp probe 25 is arranged on the water outlet of anoxic expanded bed 3
In area 20,
Digital display pH sensors 5, its pH probes 24 are arranged on the water outlet of anoxic expanded bed 3
In area 20.
The waste water denitrification denitrogenation processing unit also includes control data cabinet 8, by computer number
Connected according to line 16 and terminal control unit 9,
The temperature digital display sensor 4, digital display pH sensors 5, online gas meter 6,
Temperature overheating sensor 7, solenoid electric valve 1, floating gas tank 2, low liquid level warning device 11,
The display and/or operational control of feed pump 12, circulating pump 13 and heat pump 14 are by control
Data cabinet 8 is operated.
The heating water inlet 29 of the heater 15, heat pump 14 and anoxic expanded bed 3, plus
Hot water outlet 30 constitutes heated water re-circulation's pipeline, and heating water is heated by chuck to reaction zone.
Described anoxic expanded bed 3 can be made up of steel plate, glass or other materials.
The main feature of anoxic expanded bed includes：(1) packing area is run with expanded state, it is to avoid water
Flow short-circuit, improves organic matter and nitrate anion elimination capacity；(2) tiny granular filler is used,
The specific surface area of filler is bigger, and the biofilm biomass of attachment is big；(3) packing area is considerably increased thick
The ratio between degree, packing area thickness and packing area cross-sectional diameter are not less than 2, reduce waste water denitrification
The floor space of denitrification processing device.
A kind of method of wastewater treatment of application waste water denitrification denitrogenation processing unit, including following step
Suddenly：
1) waste water is by after feed pump 12, the water outlet of feed pump 12 and the water outlet of circulating pump 13
Mixed, formed mixing water；
2) mixing water is processed by water inlet 17 into the reaction zone of anoxic expanded bed 3；
3) reaction zone water outlet enters exhalant region 20 by linkage section, then by circulating water intake
Pipe 22 enters circulating pump 13；
4) the top water outlet of exhalant region 20 is discharged by delivery port 26.
On the basis of such scheme, step 2) in mixing water entered by water inlet 17 and lack
Oxygen expanded bed 3, then after the graded gravel particle loaded in supporting layer 18 carries out water distribution,
Into packing area 19.
On the basis of such scheme, the filler particles in described filler area 19 are with circulating water flow
Float, the filler particles in packing area 19 is in swelling state.
On the basis of such scheme, circulating water flow flow is controlled, make the expansion of packing area 19
Rate is below 50%.
On the basis of such scheme, step 3) described in three phase separation in exhalant region 20
Device 23 can be such that tiny filler particles voluntarily settle, and collect the gas of generation.
On the basis of such scheme, the gas enters floating gas tank 2, and by Electromagnetic Control
Valve 1 and online gas meter 6 carry out gas volume metering heel row and go out system.
On the basis of such scheme, described temperature and pH value heat aqueous position and aerogenesis
Amount is by computer system automatic controlling and monitoring.
Waste water denitrification denitrogenation processing unit of the present invention has following beneficial effect：
Packing area 19 uses fine grained filler, and specific surface area is big, can effectively improve unit volume
Microbial biomass in filler, and then improve the volumetric loading of reactor；
Swelling state is in when packing area 19 is normally run, it is to avoid the issuable water of fixed bed
Flow short-circuit problem, the fluidised form of solid, liquid two-phase is conducive to contact of the microorganism with waste water and mass transfer,
Improve biological respinse efficiency；
Using water circulation is forced, the stability and impact resistance of bioprocesses are improved；
Anoxic expanded bed 3 can use larger device height, improve the filler of anoxic expanded bed 3
Thickness degree, and then reduce reactor floor space；
Temperature, pH value, heating aqueous position in waste water denitrification denitrogenation processing unit, aerogenesis
Amount automatically controls monitoring by computer system, and automaticity is very high, greatly reduces artificial
Labour intensity.
Brief description of the drawings
The present invention has drawings described below：
Fig. 1 waste water denitrification denitrogenation devices of the present invention constitute schematic diagram
The front view of Fig. 2 anoxic expanded beds of the present invention
The front view of Fig. 3 three phase separators of the present invention
The top view of Fig. 4 three phase separators of the present invention
Description of reference numerals：
1st, solenoid electric valve, 2, floating gas tank, 3, anoxic expanded bed, 4, temperature digital display sensing
Device, 5, digital display pH sensors, 6, online gas meter, 7, temperature overheating sensor,
8th, control data cabinet, 9, terminal control unit, 10, head tank, 11, low liquid level warning device,
12nd, feed pump, 13, circulating pump, 14, heat pump, 15, heater, 16, computer data
Line
17th, water inlet, 18, supporting layer, 19, packing area, 20, exhalant region, 21, overflow
Weir, 22, circulating water intake pipe, 23, three phase separator, 24, pH probes, 25, temperature
Probe, 26, delivery port, 27, water leg, 28, mud discharging mouth, 29, heating water inlet, 30,
Heated water outlet
23-a, central tube, 23-b, top cover body, 23-c, bottom cover body, 23-d, connection
Part
Specific embodiment
Embodiments of the invention are elaborated below in conjunction with accompanying drawing.It is emphasized that under
State it is bright be merely exemplary, rather than in order to limit the scope of the present invention and its application.
As in Figure 2-4, a kind of anoxic expanded bed, the anoxic expanded bed 3 from bottom to top according to
Secondary is reaction zone, linkage section and exhalant region 20, and reaction zone and exhalant region 20 are connected by linkage section
Connect；
Cross-sectional area of the cross-sectional area of the exhalant region 20 more than reaction zone；
The bottom of the reaction zone is provided with water inlet 17；
The top of the water inlet 17 is provided with and graded gravel is loaded in supporting layer 18, supporting layer 18
Particle；
It is a diameter of that the top of the supporting layer 18 is provided with filling in packing area 19, packing area 19
The small particle size filler of 1-3mm；
The top perimeter of the exhalant region 20 sets water leg 27, the side wall of the top of water leg 27
Downflow weir 21 is set；
The side wall upper part of the exhalant region 20 also sets up the delivery port 26 with the UNICOM of water leg 27；
The center of the exhalant region 20 is centrally located three phase separator 23；
Circulating water intake pipe 22 is set in the exhalant region 20.
The outside of the reaction zone is provided with chuck, and the bottom of chuck is provided with heating water inlet 29,
The top of chuck is provided with heated water outlet 30.
The side wall of the linkage section is provided with mud discharging mouth 28.
The coupling part flare of the linkage section and exhalant region 20.
The three phase separator 23 includes central tube 23-a, in the connection of central tube 23-a lower ports
Portion cover body 23-b, top cover body 23-b is connected with bottom cover body 23-c by connector 23-d,
And constitute flow channels；Top cover body 23-b and bottom cover body 23-c is in horn-like, and enlarging
End is downward.
As shown in figure 1, a kind of waste water denitrification denitrogenation processing unit, swollen using above-mentioned anoxic
Swollen bed 3, also including feed pump 12, the water inlet 17 of anoxic expanded bed 3 is connected by pipeline,
Circulating pump 13, water inlet 17 and the circulation of anoxic expanded bed 3 are connected by pipeline respectively
Water inlet pipe 22,
Head tank 10, connects feed pump 12, and head tank 10 is provided with low liquid level warning device 11,
Floating gas tank 2, the upper port of central tube 23-a is connected by pipeline,
Online gas meter 6, is connected with floating gas tank 2, floats gas tank 2 and online gas dosing
Solenoid electric valve 1 is provided between instrument 6,
Heat pump 14, is connected with the heating water inlet 29 of anoxic expanded bed 3,
Heater 15, one end is connected with heat pump 14, and one end is connected with heated water outlet 30,
Heater 15 is provided with temperature overheating sensor 7,
Temperature digital display sensor 4, its temp probe 25 is arranged on the water outlet of anoxic expanded bed 3
In area 20,
Digital display pH sensors 5, its pH probes 24 are arranged on the water outlet of anoxic expanded bed 3
In area 20.
The waste water denitrification denitrogenation processing unit also includes control data cabinet 8, by computer number
Connected according to line 16 and terminal control unit 9,
The temperature digital display sensor 4, digital display pH sensors 5, online gas meter 6,
Temperature overheating sensor 7, solenoid electric valve 1, floating gas tank 2, low liquid level warning device 11,
The display and/or operational control of feed pump 12, circulating pump 13 and heat pump 14 are by control
Data cabinet 8 is operated.
The heating water inlet 29 of the heater 15, heat pump 14 and anoxic expanded bed 3, plus
Hot water outlet 30 constitutes heated water re-circulation's pipeline, and heating water is heated by chuck to reaction zone.
Described anoxic expanded bed 3 can be made up of steel plate, glass or other materials.
The main feature of anoxic expanded bed includes：(1) packing area is run with expanded state, it is to avoid water
Flow short-circuit, improves organic matter and nitrate anion elimination capacity；(2) tiny granular filler is used,
The specific surface area of filler is bigger, and the biofilm biomass of attachment is big；(3) packing area thickness is greatly improved,
The ratio between packing area thickness and packing area cross-sectional diameter are not less than 2, reduce waste water denitrification denitrogenation
The floor space of processing unit.
A kind of method of wastewater treatment of application waste water denitrification denitrogenation processing unit, including following step
Suddenly：
1) waste water is by after feed pump 12, the water outlet of feed pump 12 and the water outlet of circulating pump 13
Mixed, formed mixing water；
2) mixing water is processed by water inlet 17 into the reaction zone of anoxic expanded bed 3；
3) reaction zone water outlet enters exhalant region 20 by linkage section, then by circulating water intake
Pipe 22 enters circulating pump 13；
4) the top water outlet of exhalant region 20 is discharged by delivery port 26.
On the basis of such scheme, step 2) in mixing water entered by water inlet 17 and lack
Oxygen expanded bed 3, then after the graded gravel particle loaded in supporting layer 18 carries out water distribution,
Into packing area 19.
On the basis of such scheme, the filler particles in described filler area 19 are with circulating water flow
Float, the filler particles in packing area 19 is in swelling state.
On the basis of such scheme, circulating water flow flow is controlled, make the expansion of packing area 19
Rate is below 50%.
On the basis of such scheme, step 3) described in three phase separation in exhalant region 20
Device 23 can be such that tiny filler particles voluntarily settle, and collect the gas of generation.
On the basis of such scheme, the gas enters floating gas tank 2, and by Electromagnetic Control
Valve 1 and online gas meter 6 carry out gas volume metering heel row and go out system.
On the basis of such scheme, described temperature and pH value heat aqueous position and aerogenesis
Amount is by computer system automatic controlling and monitoring.
Process treatment process of the waste water in waste water denitrification denitrogenation processing unit of the present invention
It is as follows：
The top water body of exhalant region 20 of anoxic expanded bed 3 is followed by the entrance of circulating water intake pipe 22
After ring pump 13, the water outlet of circulating pump 13 and the water outlet mixing of feed pump 12, by water inlet
17 enter in anoxic expanded bed 3, then the graded gravel particle by being loaded in supporting layer 18
After carrying out water distribution, into packing area 19, in the presence of the circulating water flow for flowing up, fill out
Filler particles in material area 19 float with circulating water flow, make at the filler particles in packing area 19
In swelling state, circulating water flow flow is controlled, makes the expansion rate of packing area 19 below 50%,
The gravel particle of supporting layer 18 is big due to particle diameter, is not floated with current.Due in circulating water flow
Organic matter and nitrate anion containing bio-degradable, can grow micro- life on the filler particles of packing area
Thing film, circulating water flow is capable of achieving biochemical reaction during by packing area, completes organic
The denitrification degraded of thing and nitrate anion, organic matter and nitrate anion in current are removed.
Circulating water flow is by entering exhalant region 20, the cross section of exhalant region 20 behind packing area 19
Product is more than packing area, and the reduction of current upflow velocity is taken up in packing area 19 by circulating water flow
Filler particles settle go back to packing area 19 again after flow rate of water flow reduction, prevent tiny filler
Grain takes anoxic expanded bed 13 out of by current.Current pass through circulating water intake after reaching exhalant region 20
Pipe 22 pumps into circulating pump 13, and water outlet enters drainpipe discharge system by delivery port 26.
Three phase separator 23 can be such that tiny filler particles voluntarily settle, and collect generation
Gas, enters floating gas tank 2 after the gas discharge that will be collected, and by solenoid electric valve 1 and
Line gas meter 6 carries out gas volume metering heel row and goes out system.
Described temperature and pH value, heating aqueous position and gas production are automatic by computer system
Control and monitoring.
The denitrification denitrogenation effect of waste water denitrification denitrogenation processing unit of the present invention：
Certain factory's coal gasification waste water, coal gasification waste water are processed using waste water denitrification denitrogenation processing unit
COD is 200-300mg/L, NH4 +- N is 100-150mg/L.Coal gasification waste water is through aerobic
NO after treatment3 -- N concentration is 100-150mg/L, using methyl alcohol as supplementary carbon source, then instead
It is 400-500mg/L to answer device inlet COD concentration.Waste water denitrification denitrogenation processing unit starts
When NO3 -- N water inlet volumetric loadings are 1kg/m3D, NO3 -More than 96% in-N clearances three days.
Flow of inlet water is gradually stepped up to improve the volumetric loading of waste water denitrification denitrogenation processing unit, waste water
Denitrification denitrogenation processing unit runs a month NO3 -- N water inlet volumetric loadings reach 3kg/m3D,
COD water inlet volumetric loadings reach 10kg/m3D, NO3 -- N clearances are higher than 96%.
The content not being described in detail in this specification belongs to known in professional and technical personnel in the field
Prior art in.
Claims (17)
1. a kind of anoxic expanded bed, it is characterised in that：The anoxic expanded bed (3) from lower and
On be followed successively by reaction zone, linkage section and exhalant region (20), reaction zone and exhalant region (20) are logical
Cross linkage section connection；
Cross-sectional area of the cross-sectional area of the exhalant region (20) more than reaction zone；
The bottom of the reaction zone is provided with water inlet (17)；
Water inlet (17) top is provided with supporting layer (18), supporting layer (18) and loads
Graded gravel particle；
Supporting layer (18) top is provided with packing area (19), packing area (19) and loads
The small particle size filler of a diameter of 1-3mm；
Exhalant region (20) top perimeter sets water leg (27), on water leg (27)
The side wall of side sets downflow weir (21)；
The side wall upper part of the exhalant region (20) also sets up the water outlet with water leg (27) UNICOM
Mouth 26；
The center of the exhalant region (20) is centrally located three phase separator (23)；
Circulating water intake pipe (22) is set in the exhalant region (20).
2. anoxic expanded bed as claimed in claim 1, it is characterised in that：The reaction zone
Outside be provided with chuck, the bottom of chuck is provided with heating water inlet (29), and the top of chuck sets
There is heated water outlet (30).
3. anoxic expanded bed as claimed in claim 1, it is characterised in that：The linkage section
Side wall be provided with mud discharging mouth (28).
4. anoxic expanded bed as claimed in claim 1, it is characterised in that：Linkage section with go out
The coupling part flare in pool (20).
5. anoxic expanded bed as claimed in claim 1, it is characterised in that：The three-phase separate
Include central tube (23-a) from device (23), central tube (23-a) lower port connection top cover body
(23-b), top cover body (23-b) passes through connector (23-d) with bottom cover body (23-c)
Connection, and constitute flow channels；Top cover body (23-b) and bottom cover body (23-c) are in loudspeaker
Shape, and flared end is downward.
6. anoxic expanded bed as claimed in claim 1, it is characterised in that：Packing area (19)
The ratio between the cross-sectional diameter of thickness and packing area (19) >=2.
7. anoxic expanded bed as claimed in claim 1, it is characterised in that：Described anoxic
Expanded bed (3) can be made up of steel plate, glass or other materials.
8. a kind of waste water denitrification denitrogenation processing unit, it is characterised in that apply claim
Anoxic expanded bed (3) described in 1-7 any claims, also includes：
Feed pump (12), the water inlet (17) of anoxic expanded bed (3) is connected by pipeline,
Circulating pump (13), the water inlet (17) of anoxic expanded bed (3) is connected by pipeline respectively
With circulating water intake pipe (22),
Head tank (10), connection feed pump (12), head tank (10) is provided with low liquid level warning
Device (11),
Floating gas tank (2), central tube (23-a) upper port is connected by pipeline,
Online gas meter (6), be connected with floating gas tank (2), floating gas tank (2) with it is online
Solenoid electric valve (1) is provided between gas meter (6),
Heat pump (14), is connected with the heating water inlet (29) of anoxic expanded bed (3),
Heater (15), one end is connected with heat pump (14), one end and heated water outlet (30)
Connection, heater (15) is provided with temperature overheating sensor (7),
Temperature digital display sensor (4), its temp probe (25) is arranged on anoxic expanded bed (3)
Exhalant region (20) in,
Digital display pH sensors (5), its pH probe (24) are arranged on anoxic expanded bed (3)
Exhalant region (20) in.
9. waste water denitrification denitrogenation processing unit as claimed in claim 8, it is characterised in that
The waste water denitrification denitrogenation processing unit also includes：
Control data cabinet (8), by computer data line (16) and terminal control unit (9) even
Connect；
The temperature digital display sensor (4), digital display pH sensors (5), online gas dosing
Instrument (6), temperature overheating sensor (7), solenoid electric valve (1), floating gas tank (2), low liquid
Position warning device (11), feed pump (12), circulating pump (13) and heat pump (14) show
Show and/or operational control is operated by control data cabinet (8).
10. waste water denitrification denitrogenation processing unit as claimed in claim 8, it is characterised in that：
The heating water inlet (29) of the heater (15), heat pump (14) and anoxic expanded bed (3),
Heated water outlet (30) constitutes heated water re-circulation's pipeline, and heating water is added by chuck to reaction zone
Heat.
11. a kind of method of wastewater treatment, using described in claim 8-10 any claims
Waste water denitrification denitrogenation processing unit, it is characterised in that comprise the following steps：
1) waste water is by after feed pump (12), the water outlet of feed pump (12) and circulating pump (13)
Water outlet mixed, formed mixing water；
2) mixing water is carried out by the reaction zone that water inlet (17) enters anoxic expanded bed (3)
Treatment；
3) reaction zone water outlet enters exhalant region (20) by linkage section, is then entered by recirculated water
Mouth pipe (22) enters circulating pump (13)；
4) exhalant region (20) top water outlet is discharged by delivery port (26).
12. method of wastewater treatment as claimed in claim 11, it is characterised in that：Step 2)
Middle mixing water enters anoxic expanded bed (3) by water inlet (17), then by supporting layer (18)
After the graded gravel particle of interior filling carries out water distribution, into packing area (19).
13. method of wastewater treatment as claimed in claim 12, it is characterised in that：It is described to fill out
Filler particles in material area (19) float with circulating water flow, make the filler in packing area (19)
Particle is in swelling state.
14. method of wastewater treatment as claimed in claim 13, it is characterised in that：Control is followed
Ring water flow, makes the expansion rate of packing area (19) below 50%.
15. method of wastewater treatment as claimed in claim 11, it is characterised in that：Step 3)
In, the three phase separator (23) in exhalant region (20) can make tiny filler particles voluntarily
Sedimentation, and collect the gas of generation.
16. method of wastewater treatment as claimed in claim 15, it is characterised in that：The gas
Body enters floating gas tank (2), and by solenoid electric valve (1) and online gas meter (6)
Carry out gas volume metering heel row and go out system.
17. method of wastewater treatment as claimed in claim 11, it is characterised in that：Described
Temperature and pH value, heating aqueous position and gas production are by computer system automatic controlling and monitoring.
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| CN107162185A (en) * | 2017-06-14 | 2017-09-15 | 中国石油化工股份有限公司 | A kind of industrial wastewater denitrification denitrogenation device and technique |
| CN108911130A (en) * | 2018-09-12 | 2018-11-30 | 苏州清控环保科技有限公司 | A kind of Novel anaerobic sulphur autotrophic denitrification denitrogenation reactor |
| CN109081498A (en) * | 2017-06-14 | 2018-12-25 | 中国石油化工股份有限公司 | Ethylene glycol industrial waste water disposal device and the method for handling ethylene glycol industrial wastewater |
| CN109467195A (en) * | 2017-09-08 | 2019-03-15 | 中国石化工程建设有限公司 | Denitrification expanded bed and wastewater treatment method containing nitrate nitrogen |
| CN110862143A (en) * | 2018-08-27 | 2020-03-06 | 中国石油化工股份有限公司 | Automatic oxygen-deficient expansion bed device for high-concentration nitrate-nitrogen wastewater treatment |
| CN110862186A (en) * | 2018-08-27 | 2020-03-06 | 中国石油化工股份有限公司 | Method for treating high-concentration nitrate radical wastewater |
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| CN109467195A (en) * | 2017-09-08 | 2019-03-15 | 中国石化工程建设有限公司 | Denitrification expanded bed and wastewater treatment method containing nitrate nitrogen |
| CN110862143A (en) * | 2018-08-27 | 2020-03-06 | 中国石油化工股份有限公司 | Automatic oxygen-deficient expansion bed device for high-concentration nitrate-nitrogen wastewater treatment |
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| CN110862185A (en) * | 2018-08-27 | 2020-03-06 | 中国石油化工股份有限公司 | Denitrification treatment method for high-concentration nitrate radical wastewater |
| CN110862184B (en) * | 2018-08-27 | 2022-06-17 | 中国石油化工股份有限公司 | Oxygen-deficient fluidized bed device for high-concentration nitrate-nitrogen wastewater treatment |
| CN108911130A (en) * | 2018-09-12 | 2018-11-30 | 苏州清控环保科技有限公司 | A kind of Novel anaerobic sulphur autotrophic denitrification denitrogenation reactor |
| CN112537844A (en) * | 2019-09-23 | 2021-03-23 | 中国石油化工股份有限公司 | Fluidized bed reactor and biofilm amount regulation and control method |
| CN112573649A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Nitrate radical wastewater treatment device and method |
| CN113800630A (en) * | 2020-06-15 | 2021-12-17 | 中国石油化工股份有限公司 | Anaerobic expansion bed device for treating high-concentration organic wastewater |
| CN115504570A (en) * | 2021-06-07 | 2022-12-23 | 中国石油化工股份有限公司 | Autotrophic nitrogen removal process device and sewage treatment method |
| CN115504570B (en) * | 2021-06-07 | 2024-02-13 | 中国石油化工股份有限公司 | Autotrophic denitrification process device and sewage treatment method |
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| CN115448449B (en) * | 2021-06-08 | 2024-02-13 | 中国石油化工股份有限公司 | Denitrification carrier, and preparation method, device and application thereof |
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