CN107043165A - Nitrify startup and control method of the DEAMOX techniques to city domestic sewage denitrogenation processing - Google Patents
Nitrify startup and control method of the DEAMOX techniques to city domestic sewage denitrogenation processing Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/006—Regulation methods for biological treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
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Abstract
Startup and control method of the DEAMOX techniques to city domestic sewage denitrogenation processing are nitrified, belongs to technical field of biological treatment of wastewater.Start-up course：Reinforcing nitrification biofilm SBR reactor inoculation has hung up properly the filler of nitrification biomembrane, DEAMOX biofilm SBRs reactor first individually cultivates ANAMMOX biomembranes, ANAMMOX biomembranes and the symbiosis flora of short-cut denitrification bacterium are further cultured for and tamed, synchronous anaerobic ammoxidation and short-cut denitrification denitrification process is realized.Control method：Prepositive denitrification reaction and nitration reaction are carried out in reinforcing nitrification biofilm SBR reactor, period passes through real-time ORP, pH and DO monitoring and controlling, water outlet containing nitrate and sanitary sewage enter DEAMOX biofilm SBR reactors, period is by real-time ORP monitoring and controllings, while controlling being turned on and off for outer carbon source measuring pump according to online nitrate data.The present invention can accurately control the mixing time of nitration reaction time and DEAMOX biofilm systems, have the advantages that energy-saving, shortening reaction time, TN clearances are high.
Description
Technical field
The startup to city domestic sewage denitrogenation processing and control method the present invention relates to a kind of nitrification-DEAMOX techniques,
Belong to technical field of biological treatment of wastewater.
Background technology
Anammox (Anaerobic ammonium oxidation, ANAMMOX) refers to that anaerobic ammonia oxidizing bacteria is being detested
NO in sewage can be utilized under oxygen environment2 -- N is by NH4 +- N is reduced to N2, it has without aeration and adds organic carbon source, denitrogenation
Load is high, many advantages, such as sludge yield is few, the biology as sustainable development most potential in current bio-denitrification technology
Denitrogenation technology, and the processing of high ammonia-nitrogen wastewater has been successfully applied to, how Anammox technology is applied to urban life
The advanced nitrogen of sewage is treated as present study hotspot.
With traditional biological nitration/denitrification process, Anammox technology belongs to autotrophic denitrification process, without organic carbon
Source, sludge yield it is low and without aeration, it is adaptable to low C/N than sanitary sewage processing, short distance nitration developed in recent years-
Anaerobic ammonia oxidation process has been successfully applied to the processing of high ammonia-nitrogen wastewater, but is not applied to the place of city domestic sewage also at present
Reason, the main bottleneck for limiting its application is that low C/N is difficult to maintain stable short distance nitration than city domestic sewage, so that can not
It is enough that stable nitrite matrix (especially handling low ammonia nitrogen waste water) is provided to Anaerobic ammonium oxidation system, cause the technique denitrogenation
Effect is unstable.
DEAMOX techniques then can effectively solve the problem of anaerobic ammonium oxidation process nitrite is difficult to acquisition, and it is single
Anammox effect and short-cut denitrification effect, the nitrite nitrogen base needed for Anammox are carried out in reactor simultaneously
Matter derives from the reduction of short-cut denitrification process nitrate nitrogen, while the nitrate nitrogen that the technique can produce Anammox
Original position is removed, therefore can effectively be reduced compared to traditional anaerobic ammonia oxidation process water outlet TN concentration.
But slowly (the highest growth rate is 0.0027h to ANAMMOX rate of bacterial growth-1), generation cycle length (10~
14d), activity is vulnerable to the change of environmental condition and is affected, and a large amount of nitrogen that DEAMOX techniques are produced during the course of the reaction
Gas makes sludge suspension in reactor, and settling property is poor, causes thalline to be easy to run off, and causes DEAMOX systems denitrification effect unstable
Fixed, according to the mode for adding filler extension biomembrane, it can retain anaerobic ammonium oxidizing bacteria, effectively improve biomass, solve
The problem of anaerobic ammonium oxidation sludge is easy to run off, so as to improve the nitrogen elimination capacity of system and the ability of stable operation.
The content of the invention
The startup to city domestic sewage denitrogenation processing and controlling party the invention discloses a kind of nitrification-DEAMOX techniques
Method, belongs to technical field of biological treatment of wastewater, it is possible to achieve the advanced nitrogen of city domestic sewage.Start-up course：Reinforcing nitrification
The inoculation of biofilm SBR reactor has hung up properly the filler of nitrification biomembrane, and DEAMOX biofilm SBRs reactor is individually cultivated first
ANAMMOX biomembranes, are further cultured for and tame ANAMMOX biomembranes and the symbiosis flora of short-cut denitrification bacterium, realize synchronous anaerobic
Ammoxidation and short-cut denitrification denitrification process.Control method：It is anti-that Prepositive denitrification is carried out in reinforcing nitrification biofilm SBR reactor
Should and nitration reaction, during which by real-time ORP, pH and DO monitoring and controlling, reinforcing nitrification biofilm SBR reactor water outlet and life
Sewage enters DEAMOX biofilm SBR reactors, during which by real-time ORP monitoring and controllings, is sensed online while installing nitrate
Input of the device using online acquisition nitrate data as process controller, exports through Fuzzy processing and acts on external carbon addition
Measuring pump is turned on and off.When the present invention can accurately control the stirring of nitration reaction time and DEAMOX biofilm systems
Between, have the advantages that energy-saving, shortening reaction time, TN clearances are high.
The purpose of the present invention is achieved through the following technical solutions：
1. startup and control method of the nitrification-DEAMOX techniques to city domestic sewage denitrogenation processing, using following device,
It is anti-that the device includes raw water box (1), reinforcing nitrification biofilm SBR reactor (2), intermediate water tank (3), DEAMOX biofilm SBRs
Answer device (5), water tank (6)；Raw water box (1) passes through the first peristaltic pump (2.8) and reinforcing nitrification biofilm SBR reactor (2) the
One water inlet (2.4) is connected；Reinforcing nitrification biofilm SBR reactor (2) passes through the first draining valve (2.2) and intermediate water tank (3)
It is connected；Intermediate water tank (3) passes through the second peristaltic pump (5.11) and the water inlet (5.9) of DEAMOX biofilm SBRs reactor (5) second
It is connected；Raw water box (1) passes through the 3rd peristaltic pump (2.9) and DEAMOX biofilm SBRs reactor (5) the 3rd water inlet (5.10) phase
Even；Organic carbon source reserve tank (5.14) is intake by the 4th peristaltic pump (5.13) and DEAMOX biofilm SBRs reactor (5) the 4th
Mouth (5.12) is connected；Water tank (6) is connected by the second draining valve (5.2) with DEAMOX biofilm SBRs reactor (5).
The reinforcing nitrification biofilm SBR reactor (2) is provided with the first blow-down pipe (2.1), the first draining valve (2.2), the
One sample tap (3.3), the first water inlet (2.4), the first agitator (2.5), air pump (2.6), aeration head (2.7), pH are passed online
Sensor (2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), floating stuffing (2.10) use diameter
For 20~50mm polypropylene hollow rings, its density is 0.96~1.00g/cm3, specific surface area is 200~800m2/m3, porosity
For 94%~96%, filling rate is 20%~45%；；The DEAMOX biofilm SBRs reactor (5) is provided with the second blow-down pipe
(5.1), the second draining valve (5.2), the second sample tap (5.3), the second agitator (5.6), the second water inlet (5.9), the 3rd enter
It is the mouth of a river (5.10), the 4th water inlet (5.12), the 2nd ORP on-line sensors (5.4), nitrate on-line sensor (5.8), organic
Carbon source reserve tank (5.14), filler fixed mount (5.7), fixed filler (5.5) use volume for 1~8cm3Polyurethane sponge fill out
Material, its density is 0.22~0.25g/cm3, 20~30m2/ g, porosity is 92%~94%, and filling rate is 20%~45%；、
PH on-line sensors (2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), the 2nd ORP are sensed online
PH signal inputs (4.3), the first ORP signals that the data of device (5.4) online acquisition are transmitted separately to process controller (4) are defeated
Entrance (4.4), DO signal inputs (4.2), the 2nd ORP signal inputs (4.6), then exported by process controller (4.1)
Mouth is connected with computer (4), and computer (4) is connected by data-signal delivery outlet with real-time control system (7), in real time control system
The first peristaltic pump (2.8) relay, the first agitator (2.5) relay, air pump (2.6) relay, the first draining valve of system
(2.2) relay, the second peristaltic pump (5.11) relay, the 3rd peristaltic pump (2.9) relay, the second agitator (5.6) relay
Device, the second draining valve (5.2) relay respectively with the first peristaltic pump (2.8), the first agitator (2.5), air pump (2.6), first
Draining valve (2.2), the second peristaltic pump (5.11), the 3rd peristaltic pump (2.9), the second agitator (5.6), the second draining valve (5.2)
It is connected；The data transfer of nitrate on-line sensor (5.8) online acquisition is to nitrate signal input (4.5), by program control
Control signal is exported and acts on external carbon addition measuring pump by the external carbon addition signal output interface (4.7) of device (4.1) processed
(5.13), to control external carbon addition amount.
2. the described device progress of application claim 1 nitrifies-DEAMOX techniques and city domestic sewage denitrogenation processing is opened
Dynamic and control method, its step is as follows：
1) starting step：
Reinforcing nitrification biofilm SBR reactor (2) inoculation has hung up properly the filler (2.10) of nitrification biomembrane, and packing ratio is
20%~45%；DEAMOX biofilm SBRs reactor (5) is inoculated with the activated sludge with anaerobic ammoxidation activity, inoculation first
Sludge concentration is 2000~3000mg/L, and filler packing ratio is 20%~50%, is 1.0~2.0 by adding mass concentration ratio
NO2 -- N and NH4 +- N simulated wastewaters, culture domestication Anammox biomembrane, treat that Anammox speed is higher than 0.2gN/
(gVSSh), the NH of simultaneity factor water outlet4 +- N and NO2 -- N clearances are higher than 80%, and system total nitrogen elimination capacity reaches 0.5
~1.8kg/ (m3When d), then Anammox biofilm system starts successfully；Then add again nitrous accumulation rate for 70% with
On short-cut denitrification activated sludge, sludge concentration after inoculation is 2000mg/L~5000mg/L, dense by adding quality
Degree is than the NO for 1.0~2.03 -- N and NH4 +- N simulated wastewaters, while adding organic carbon source, control additional organic carbon source and water inlet
Middle Study on nitrate concentration ratio is 1.0~3.0, culture domestication DEAMOX biomembranes, when going for ammonia nitrogen in water outlet and nitrate nitrogen
Except rate reaches that more than 70% DEAMOX biofilm systems start successfully.
2) control process：
A1, the water inlet of reinforcing nitrification biofilm SBR reactor (2) is by real-time control system control, after system starts, first
Peristaltic pump (2.8) is automatically turned on, and the sanitary sewage injection reinforcing in raw water box (1) is nitrified in biofilm SBR reactor (2),
When inflow reaches the 40%~60% of reactor volume, intake pump is closed automatically, water inlet end；
After A2, water inlet end, the first agitator (2.5) is automatically turned on, and reinforcing nitrification biofilm SBR reactor (2) is being stirred
Enter Prepositive denitrification process during mixing, Prepositive denitrification process is monitored by the first ORP on-line sensors (2.12), and will be real
When data transfer to computer (4), when the condition that reinforcing nitrification biofilm SBR reactor (2) Prepositive denitrification is completed is ORP's
First derivative more than -25mv/min by being sported less than -30mv/min, and mixing time is more than 60min, and air pump is automatically turned on；
A3, after air pump (2.6) is automatically turned on, enters the nitrification stage, online by pH on-line sensors (2.11) and DO
Sensor (2.13) is monitored, and by real-time Data Transmission to computer (4), when reinforcing nitrification biofilm SBR reactor (2) nitrification
The condition of completion is become just and when aeration time is more than 60min for pH first derivative by negative, while DO is more than 2mg/L, terminates nitre
Change process, air pump (2.6) and the first agitator (2.5) are closed automatically；
A4, the sedimentation time of reinforcing nitrification biofilm SBR reactor (2) by real-time control system control, when reaching 30~
Start draining after 90min, system automatically turns on the first draining valve (2.2), and water outlet enters intermediate water tank (3), when displacement reaches
To reactor volume 40%~60% when, the first draining valve (2.2) automatically close；
A5, after draining terminates, A1 of the system automatically into next cycle；
B1, DEAMOX biofilm SBR reactor (5) water inlet are by real-time control system control, and second wriggles after system starts
Pump (5.11) and the 3rd peristaltic pump (2.9) are automatically turned on, respectively by 40%~60% nitrified effluent in intermediate water tank (3) and
The sanitary sewage of 20%~40% raw water box (1) is entered in DEAMOX biofilm SBRs reactor (5), when inflow reaches
The 40%~60% of DEAMOX biofilm SBRs reactor (5) volume, intake pump is closed automatically, water inlet end；
After B2, water inlet end, the second agitator (5.6) is automatically turned on, and Anammox mistake is coupled into short-cut denitrification
Journey (DEAMOX), the process is monitored by the 2nd ORP on-line sensors (5.4) and nitrate on-line sensor (5.8), mixing time
During more than 60min, terminate reaction, the second agitator (5.6) is closed automatically；When nitrate on-line sensor (5.8) is monitored out
Water nitrate concentration is higher than 5mg/L, starts external carbon addition measuring pump (5.13) in next cycle, and control system it is inside and outside added with
Machine carbon source is 1.0~3.0 with Study on nitrate concentration ratio in water inlet, when the cycle water outlet nitrate concentration is less than this scope,
The phase closes external carbon addition amount in next week；
The sedimentation time of B3, DEAMOX biofilm SBR reactor (5) by real-time control system control, when reaching 10~
Start draining after 40min, system automatically turns on the second draining valve (5.2), and water outlet enters water tank (6), when displacement reaches
Reactor volume 40%~60% when, the second draining valve (5.2) automatically close；
B4, after draining terminates, B1 of the system automatically into next cycle；
Startup and controlling party of a kind of nitrification-DEAMOX techniques that the present invention is provided to city domestic sewage denitrogenation processing
Method, has the advantage that and feature：
1) present invention uses independent enrichment culture ANAMMOX bacteriums, then enters with the mode of short-cut denitrification bacterium combined running
The startup of row DEAMOX biomembrane process, this Starting mode, it is contemplated that the characteristics of both function bacteriums, so as to shorten startup
Time, while decreasing adding of agent expense；
2) nitrification biofilm system nitrification activity is high, load is high, sludge output is low；DEAMOX systems use the side of biofilm
Formula can at utmost withhold anaerobic ammonium oxidizing bacteria, improve its microbial biomass, the activity of stable anaerobic ammonia oxidizing bacteria, and be difficult
It is lost in；
3) NO that the technique can produce Anammox3 -- N carries out removal in situ, is intake nitrate by optimal control
Relatively low water outlet total nitrogen concentration is resulted in ammonia nitrogen mass concentration ratio, nitrogen removal rate, and short-cut denitrification and anaerobism is improved
Ammoxidation reaction speed is fast, and technique nitrogen elimination capacity is high；
4) whole system is controlled in real time by online DO, pH, ORP and online nitric acid salt figure sensor, accurately judges each rank
Section reaction end, saves reaction time and additional carbon.Whole technique is completed by process real-time control system, manages operation side
Just, operating cost is relatively low, system anti impulsion load and is not likely to produce sludge bulking.
Brief description of the drawings
The schematic device that Fig. 1 is handled city domestic sewage advanced nitrogen for reinforcing nitrification-DEAMOX biomembrane process
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
1. startup and control method of the nitrification-DEAMOX techniques to city domestic sewage denitrogenation processing, using following device,
It is anti-that the device includes raw water box (1), reinforcing nitrification biofilm SBR reactor (2), intermediate water tank (3), DEAMOX biofilm SBRs
Answer device (5), water tank (6)；Raw water box (1) passes through the first peristaltic pump (2.8) and reinforcing nitrification biofilm SBR reactor (2) the
One water inlet (2.4) is connected；Reinforcing nitrification biofilm SBR reactor (2) passes through the first draining valve (2.2) and intermediate water tank (3)
It is connected；Intermediate water tank (3) passes through the second peristaltic pump (5.11) and the water inlet (5.9) of DEAMOX biofilm SBRs reactor (5) second
It is connected；Raw water box (1) passes through the 3rd peristaltic pump (2.9) and DEAMOX biofilm SBRs reactor (5) the 3rd water inlet (5.10) phase
Even；Organic carbon source reserve tank (5.14) is intake by the 4th peristaltic pump (5.13) and DEAMOX biofilm SBRs reactor (5) the 4th
Mouth (5.12) is connected；Water tank (6) is connected by the second draining valve (5.2) with DEAMOX biofilm SBRs reactor (5).
The reinforcing nitrification biofilm SBR reactor (2) is provided with the first blow-down pipe (2.1), the first draining valve (2.2), the
One sample tap (3.3), the first water inlet (2.4), the first agitator (2.5), air pump (2.6), aeration head (2.7), pH are passed online
Sensor (2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), floating stuffing (2.10) use diameter
For 20~50mm polypropylene hollow rings, its density is 0.96~1.00g/cm3, specific surface area is 200~800m2/m3, porosity
For 94%~96%, filling rate is 20%~45%；；The DEAMOX biofilm SBRs reactor (5) is provided with the second blow-down pipe
(5.1), the second draining valve (5.2), the second sample tap (5.3), the second agitator (5.6), the second water inlet (5.9), the 3rd enter
It is the mouth of a river (5.10), the 4th water inlet (5.12), the 2nd ORP on-line sensors (5.4), nitrate on-line sensor (5.8), organic
Carbon source reserve tank (5.14), filler fixed mount (5.7), fixed filler (5.5) use volume for 1~8cm3Polyurethane sponge fill out
Material, its density is 0.22~0.25g/cm3, 20~30m2/ g, porosity is 92%~94%, and filling rate is 20%~45%；、
PH on-line sensors (2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), the 2nd ORP are sensed online
PH signal inputs (4.3), the first ORP signals that the data of device (5.4) online acquisition are transmitted separately to process controller (4) are defeated
Entrance (4.4), DO signal inputs (4.2), the 2nd ORP signal inputs (4.6), then exported by process controller (4.1)
Mouth is connected with computer (4), and computer (4) is connected by data-signal delivery outlet with real-time control system (7), in real time control system
The first peristaltic pump (2.8) relay, the first agitator (2.5) relay, air pump (2.6) relay, the first draining valve of system
(2.2) relay, the second peristaltic pump (5.11) relay, the 3rd peristaltic pump (2.9) relay, the second agitator (5.6) relay
Device, the second draining valve (5.2) relay respectively with the first peristaltic pump (2.8), the first agitator (2.5), air pump (2.6), first
Draining valve (2.2), the second peristaltic pump (5.11), the 3rd peristaltic pump (2.9), the second agitator (5.6), the second draining valve (5.2)
It is connected；The data transfer of nitrate on-line sensor (5.8) online acquisition is to nitrate signal input (4.5), by program control
Control signal is exported and acts on external carbon addition measuring pump by the external carbon addition signal output interface (4.7) of device (4.1) processed
(5.13), to control external carbon addition amount.
Specific test water is actual domestic wastewater in the present embodiment, and its ammonia nitrogen concentration is 55~85mg/L, and COD concentration is
150~350mg/L, nitrite nitrogen concentration is less than 0.5mg/L, and nitrate nitrogen concentration is less than 0.5mg/L, each effective body of reactor
Product is 10L.
The device that is handled using above-mentioned reinforcing nitrification-DEAMOX biomembrane process city domestic sewage advanced nitrogen is opened
Dynamic and control method, its process is as follows：
1) starting step：
Reinforcing nitrification biofilm SBR reactor (2) inoculation has hung up properly the filler (2.10) of nitrification biomembrane, and packing ratio is
20%；DEAMOX biofilm SBRs reactor (5) is inoculated with the activated sludge with anaerobic ammoxidation activity first, and seed sludge is dense
Spend for 2500mg/L, filler packing ratio is 20%, by adding the NO that mass concentration ratio is 1.52 -- N and NH4 +- N simulated wastewaters,
Culture domestication Anammox biomembrane, it is 0.3gN/ (gVSSh), the NH of simultaneity factor water outlet to treat Anammox speed4 +-
N and NO2 -- N aqueous concentrations are less than 1mg/L, and system total nitrogen elimination capacity reaches 0.8kg/ (m3When d), then Anammox
Biofilm system starts successfully；Then the short-cut denitrification activated sludge that nitrous accumulation rate is 80%, the dirt after inoculation are added again
Mud concentration is 2500mg/L, by adding the NO that mass concentration ratio is 1.03 -- N and NH4 +- N simulated wastewaters, while adding organic
Carbon source, it is 2.5 with Study on nitrate concentration ratio in water inlet to control additional organic carbon source, culture domestication DEAMOX biomembranes, when going out
The clearance of ammonia nitrogen and nitrate nitrogen reaches that more than 70% DEAMOX biofilm systems start successfully in water.
2) control process：
A1, the water inlet of reinforcing nitrification biofilm SBR reactor (2) is by real-time control system control, after system starts, first
Peristaltic pump (2.8) is automatically turned on, and the sanitary sewage injection reinforcing in raw water box (1) is nitrified in biofilm SBR reactor (2),
When inflow reaches the 60% of reactor volume, intake pump is closed automatically, water inlet end；
After A2, water inlet end, the first agitator (2.5) is automatically turned on, and reinforcing nitrification biofilm SBR reactor (2) is being stirred
Enter Prepositive denitrification process during mixing, Prepositive denitrification process is monitored by the first ORP on-line sensors (2.12), and will be real
When data transfer to computer (4), when the condition that reinforcing nitrification biofilm SBR reactor (2) Prepositive denitrification is completed is ORP's
First derivative more than -25mv/min by being sported less than -30mv/min, and mixing time is 60min, and air pump is automatically turned on；
A3, after air pump (2.6) is automatically turned on, enters the nitrification stage, online by pH on-line sensors (2.11) and DO
Sensor (2.13) is monitored, and by real-time Data Transmission to computer (4), pH first derivative is leveled off to just and constantly by negative change
0, and aeration time is when being 90min, while DO is more than 2mg/L, terminates nitrifying process, air pump (2.6) and the first agitator (2.5)
It is automatic to close；
A4, the sedimentation time of reinforcing nitrification biofilm SBR reactor (2) by real-time control system control, when reaching 30min
After start draining, system automatically turns on the first draining valve (2.2), and water outlet enters intermediate water tank (3), when displacement reaches reaction
Device volume 60% when, the first draining valve (2.2) automatically close；
A5, after draining terminates, A1 of the system automatically into next cycle；
B1, DEAMOX biofilm SBR reactor (5) water inlet are by real-time control system control, and second wriggles after system starts
Pump (5.11) and the 3rd peristaltic pump (2.9) are automatically turned on, respectively by 40% nitrified effluent and 40% original in intermediate water tank (3)
The sanitary sewage of water tank (1) is entered in DEAMOX biofilm SBRs reactor (5), when inflow reaches DEAMOX biofilm SBRs
The 40% of reactor (5) volume, intake pump is closed automatically, water inlet end；
After B2, water inlet end, the second agitator (5.6) is automatically turned on, and Anammox mistake is coupled into short-cut denitrification
Journey (DEAMOX), the process is monitored by the 2nd ORP on-line sensors (5.4) and nitrate on-line sensor (5.8), and the one of ORP
Order derivative gradually levels off to 0 by bearing, and mixing time is when being 90min, terminates reaction, the second agitator (5.6) is closed automatically；When
Nitrate on-line sensor (5.8) monitors that water outlet nitrate concentration is higher than 5mg/L, and external carbon addition meter is started in next cycle
Measure and add organic carbon source to be 2.5 with Study on nitrate concentration ratio in water inlet inside and outside pump (5.13), and control system, when the cycle water outlet
When nitrate concentration is less than this scope, the external carbon addition amount of phase closing in next week；
The sedimentation time of B3, DEAMOX biofilm SBR reactor (5) by real-time control system control, after 40min is reached
Start draining, system automatically turns on the second draining valve (5.2), and water outlet enters water tank (6), when displacement reaches that reactor holds
When long-pending 40%, the second draining valve (5.2) is closed automatically；
B4, after draining terminates, B1 of the system automatically into next cycle；
Result of the test shows：After system run all right, effluent COD concentration is 50~5mg/L, NH4 +0.5~4mg/ of-N concentration
L, NO2 -- N concentration 0~0.5mg/L, NO3 -- N 0~0.5mg/L of concentration, water outlet TN 1~10mg/L of concentration, reach discharge standard.
Claims (2)
1. startup and control method of the nitrification-DEAMOX techniques to city domestic sewage denitrogenation processing, using following device, the dress
Put including raw water box (1), reinforcing nitrification biofilm SBR reactor (2), intermediate water tank (3), DEAMOX biofilm SBR reactors
(5), water tank (6)；Raw water box (1) is entered by the first peristaltic pump (2.8) with reinforcing nitrification biofilm SBR reactor (2) first
The mouth of a river (2.4) is connected；Reinforcing nitrification biofilm SBR reactor (2) is connected by the first draining valve (2.2) with intermediate water tank (3)；
Intermediate water tank (3) is connected by the second peristaltic pump (5.11) with the water inlet (5.9) of DEAMOX biofilm SBRs reactor (5) second；
Raw water box (1) is connected by the 3rd peristaltic pump (2.9) with the water inlet (5.10) of DEAMOX biofilm SBRs reactor (5) the 3rd；Have
Machine carbon source reserve tank (5.14) passes through the 4th peristaltic pump (5.13) and the water inlet of DEAMOX biofilm SBRs reactor (5) the 4th
(5.12) it is connected；Water tank (6) is connected by the second draining valve (5.2) with DEAMOX biofilm SBRs reactor (5)；
The reinforcing nitrification biofilm SBR reactor (2) takes provided with the first blow-down pipe (2.1), the first draining valve (2.2), first
Sample mouthful (3.3), the first water inlet (2.4), the first agitator (2.5), air pump (2.6), aeration head (2.7), pH on-line sensors
(2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), floating stuffing (2.10) use a diameter of 20
~50mm polypropylene hollow rings, its density is 0.96~1.00g/cm3, specific surface area is 200~800m2/m3, porosity is
94%~96%, filling rate is 20%~45%；；The DEAMOX biofilm SBRs reactor (5) is provided with the second blow-down pipe
(5.1), the second draining valve (5.2), the second sample tap (5.3), the second agitator (5.6), the second water inlet (5.9), the 3rd enter
It is the mouth of a river (5.10), the 4th water inlet (5.12), the 2nd ORP on-line sensors (5.4), nitrate on-line sensor (5.8), organic
Carbon source reserve tank (5.14), filler fixed mount (5.7), fixed filler (5.5) use volume for 1~8cm3Polyurethane sponge fill out
Material, its density is 0.22~0.25g/cm3, 20~30m2/ g, porosity is 92%~94%, and filling rate is 20%~45%；、
PH on-line sensors (2.11), the first ORP on-line sensors (2.12), DO on-line sensors (2.13), the 2nd ORP are sensed online
PH signal inputs (4.3), the first ORP signals that the data of device (5.4) online acquisition are transmitted separately to process controller (4) are defeated
Entrance (4.4), DO signal inputs (4.2), the 2nd ORP signal inputs (4.6), then exported by process controller (4.1)
Mouth is connected with computer (4), and computer (4) is connected by data-signal delivery outlet with real-time control system (7), in real time control system
The first peristaltic pump (2.8) relay, the first agitator (2.5) relay, air pump (2.6) relay, the first draining valve of system
(2.2) relay, the second peristaltic pump (5.11) relay, the 3rd peristaltic pump (2.9) relay, the second agitator (5.6) relay
Device, the second draining valve (5.2) relay respectively with the first peristaltic pump (2.8), the first agitator (2.5), air pump (2.6), first
Draining valve (2.2), the second peristaltic pump (5.11), the 3rd peristaltic pump (2.9), the second agitator (5.6), the second draining valve (5.2)
It is connected；The data transfer of nitrate on-line sensor (5.8) online acquisition is to nitrate signal input (4.5), by program control
Control signal is exported and acts on external carbon addition measuring pump by the external carbon addition signal output interface (4.7) of device (4.1) processed
(5.13), to control external carbon addition amount.
2. application claim 1 described device nitrify-DEAMOX techniques to the startup of city domestic sewage denitrogenation processing and
Control method, its step is as follows：
1) starting step：
Reinforcing nitrification biofilm SBR reactor (2) inoculation hung up properly nitrification biomembrane filler (2.10), packing ratio be 20%~
45%；DEAMOX biofilm SBRs reactor (5) is inoculated with the activated sludge with anaerobic ammoxidation activity first, and seed sludge is dense
Spend for 2000~3000mg/L, filler packing ratio is 20%~50%, by adding the NO that mass concentration ratio is 1.0~2.02 --N
And NH4 +- N simulated wastewaters, culture domestication Anammox biomembrane, treat that Anammox speed is higher than 0.2gN/ (gVSSh),
The NH of simultaneity factor water outlet4 +- N and NO2 -- N clearances are higher than 80%, and system total nitrogen elimination capacity reaches 0.5~1.8kg/
(m3When d), then Anammox biofilm system starts successfully；Then the short distance that nitrous accumulation rate is more than 70% is added again
Denitrifying activated sludge, the sludge concentration after inoculation is 2000mg/L~5000mg/L, is 1.0 by adding mass concentration ratio
~2.0 NO3 -- N and NH4 +- N simulated wastewaters, while adding organic carbon source, control additional organic carbon source and nitrate in water inlet
Mass concentration ratio is 1.0~3.0, culture domestication DEAMOX biomembranes, when the clearance of ammonia nitrogen in water outlet and nitrate nitrogen reaches
More than 70% DEAMOX biofilm systems start successfully.
2) control process：
A1, the water inlet of reinforcing nitrification biofilm SBR reactor (2) is by real-time control system control, after system starts, and first wriggles
Pump (2.8) is automatically turned on, and the sanitary sewage injection reinforcing in raw water box (1) is nitrified in biofilm SBR reactor (2), when entering
When water reaches the 40%~60% of reactor volume, intake pump is closed automatically, water inlet end；
After A2, water inlet end, the first agitator (2.5) is automatically turned on, and reinforcing nitrification biofilm SBR reactor (2) is stirred
Enter Prepositive denitrification process in journey, Prepositive denitrification process is monitored by the first ORP on-line sensors (2.12), and will be counted in real time
According to computer (4) is transferred to, when reinforcing nitrifies single order of the condition of biofilm SBR reactor (2) Prepositive denitrification completion for ORP
Derivative more than -25mv/min by being sported less than -30mv/min, and mixing time is more than 60min, and air pump is automatically turned on；
A3, after air pump (2.6) is automatically turned on, enters the nitrification stage, is sensed online by pH on-line sensors (2.11) and DO
Device (2.13) is monitored, and by real-time Data Transmission to computer (4), when reinforcing nitrification biofilm SBR reactor (2) nitrification is completed
Condition become just and when aeration time is more than 60min by negative for pH first derivative, while DO is more than 2mg/L, end was nitrified
Journey, air pump (2.6) and the first agitator (2.5) are closed automatically；
A4, the sedimentation time of reinforcing nitrification biofilm SBR reactor (2) by real-time control system control, when reaching 30~90min
After start draining, system automatically turns on the first draining valve (2.2), and water outlet enters intermediate water tank (3), when displacement reaches reaction
Device volume 40%~60% when, the first draining valve (2.2) automatically close；
A5, after draining terminates, A1 of the system automatically into next cycle；
B1, DEAMOX biofilm SBR reactor (5) water inlet are by real-time control system control, the second peristaltic pump after system starts
(5.11) automatically turned on the 3rd peristaltic pump (2.9), respectively by intermediate water tank (3) 40%~60% nitrified effluent and 20%
The sanitary sewage of~40% raw water box (1) is entered in DEAMOX biofilm SBRs reactor (5), when inflow reaches
The 40%~60% of DEAMOX biofilm SBRs reactor (5) volume, intake pump is closed automatically, water inlet end；
After B2, water inlet end, the second agitator (5.6) is automatically turned on, and anaerobic ammonium oxidation process is coupled into short-cut denitrification
(DEAMOX), the process is monitored by the 2nd ORP on-line sensors (5.4) and nitrate on-line sensor (5.8), and mixing time is big
When 60min, terminate reaction, the second agitator (5.6) is closed automatically；When nitrate on-line sensor (5.8) monitors water outlet
Nitrate concentration is higher than 5mg/L, starts external carbon addition measuring pump (5.13) in next cycle, and control system is inside and outside added with machine
Carbon source is 1.0~3.0 with Study on nitrate concentration ratio in water inlet, when the cycle water outlet nitrate concentration is less than this scope,
The lower cycle will close external carbon addition amount；
The sedimentation time of B3, DEAMOX biofilm SBR reactor (5) by real-time control system control, after 10~40min is reached
Start draining, system automatically turns on the second draining valve (5.2), and water outlet enters water tank (6), when displacement reaches that reactor holds
When long-pending 40%~60%, the second draining valve (5.2) is closed automatically；
B4, after draining terminates, B1 of the system automatically into next cycle.
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