CN109650655A - A kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater - Google Patents
A kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater Download PDFInfo
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- CN109650655A CN109650655A CN201811627869.3A CN201811627869A CN109650655A CN 109650655 A CN109650655 A CN 109650655A CN 201811627869 A CN201811627869 A CN 201811627869A CN 109650655 A CN109650655 A CN 109650655A
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- sbbr
- reaction tank
- stalk
- rural area
- ammonia nitrogen
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater, including carriage body and blower, SBBR reaction tank, sterilization pool, advanced treating pond, sewage sludge storage pond and clear water reserviors are divided into inside carriage body；Diving mixer, filler, the first aerator, air lift draining stalk and air lift spoil disposal stalk are provided in SBBR reaction tank；Sterilization pool is connected with chemical feed pipe and air branch pipe, and the side of sterilization pool is inlet channel, and the other side is outlet canal；Air lift drains the outlet of stalk and the top of inlet channel and connects, and outlet canal is located at the top in advanced treating pond；The discharge outlet in advanced treating pond is connect with clear water reserviors；The second aerator is provided in sewage sludge storage pond, the outlet of air lift spoil disposal stalk is connect with sewage sludge storage pond；Apparatus of the present invention treated sewage, nitrogen and phosphorus load, COD, total nitrogen, total tp removal rate can be stablized 90% or more, and effluent quality reaches the level-one A standard in " urban wastewater treatment firm pollutant emission standard " GB18918-2002.
Description
Technical field
It is especially a kind of to handle for high ammonia nitrogen rural area and Small Town Wastewater the present invention relates to technical field of sewage
SBBR integrated apparatus.
Background technique
Rural area and Small Town Wastewater main source include takes a shower, scrub, waste water and the toilet-flushing sewage such as kitchen, therefore it and
Chemical engineering sewage is different, although not containing noxious material generally, wherein the nutrients such as nitrogen, phosphorus and content of organics are relatively high, past
A large amount of virus, bacterium, parasitic ovum etc. and synthetic detergent are swept along in contact.Since there are ingredients to answer for domestic sewage in rural areas
It is miscellaneous, discharge source distribution is irregular, more dispersed, discharge range is wide, discharge of sewage variation coefficient is big, mostly uses extensive row greatly
It puts, pipe network collection system is unsound etc., and many realistic problems, rural area and dealing carefully with for Small Town Wastewater gradually become one not
Hold ignorance, society need urgently to be resolved.China's rural sewage treatment is just in the starting stage at present, and sewage treatment facility is most
It does not match or not perfect, operational management relatively lags behind with construction, and existing many traditional wastewater processing equipments are applied in rural area
Different degrees of not applicable situation is also showed that in the processing of sewage.Therefore, a kind of targeted rural area and samll cities and towns are invented
Sewage-treatment plant promotes water resource circulation sharp again to rural groundwater, living environment and agricultural irrigation water pollution problems is solved
Use important in inhibiting.
The advantages of sequencing batch biofilm reactor (SBBR) combines SBR and biofilm can load not in reactor
Same filler generates biomembrane, realizes sewage by the different process stages such as aerobic, anoxic, anaerobism in a reaction unit
Processing.It overcomes the obstacle of space control by the approach for effectively being exchanged and being controlled in time, an operation week
In phase, each stage running time and operating status can be carried out according to service condition, influent quality and effluent quality etc. flexible
Control.It is run convenient for operational administrative and later maintenance, and has processing capacity compared with strong, water quality and quantity adaptability is good, occupied area
The advantages that small, generation surplus sludge volume lacks.
But most sewage treatment facilities cannot be well adapted for, be applied to rural area and Small Town Wastewater processing currently on the market
Condition, wastewater treatment efficiency is bad, and ammonia nitrogen removal efficiency is lower, and effluent quality is unstable, and sludge yield is more, and follow-up maintenance is taken
With larger；Therefore the device in a kind of rural area for high ammonia nitrogen and Small Town Wastewater processing is needed.
Summary of the invention
It is an object of the invention to fill up the deficiencies in the prior art, provide a kind of for high ammonia nitrogen rural area and Small Town Wastewater
The SBBR integrated apparatus of processing.
To achieve the above object, the invention adopts the following technical scheme:
A kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater, including carriage body and blower, institute
It states and is divided into SBBR reaction tank, sterilization pool, advanced treating pond, sewage sludge storage pond and clear water reserviors inside carriage body；The SBBR reaction
Diving mixer, filler, the first aerator, air lift draining stalk and air lift spoil disposal stalk are provided in pond；It is described
Sterilization pool is connected with chemical feed pipe and air branch pipe, and the side of sterilization pool is inlet channel, and the other side is outlet canal；The air lift draining
The outlet of stalk and the top of inlet channel connect, and the outlet canal is located at the top in advanced treating pond；The advanced treating pond
Discharge outlet connect with clear water reserviors；The second aerator is provided in the sewage sludge storage pond, the air lift spoil disposal stalk
Outlet is connect with sewage sludge storage pond；The blower connects four Lu Zhiguan by main pipe, is equipped with vortex-shedding meter in the main pipe,
Valve is mounted on the branch pipe of four road, four road branch pipes rise with the first aerator, the second aerator, air lift draining respectively
The air hose of liquid pipe is connected with the air hose of air lift spoil disposal stalk；The air branch pipe drains stalk by valve and air lift
Air hose connection.
Further, the advanced treating pond and sewage sludge storage pond are juxtaposed between SBBR reaction tank and clear water reserviors.
Further, pressure-type liquidometer is provided in the SBBR reaction tank, sewage sludge storage pond and clear water reserviors.
Further, the diving mixer is installed on the water inlet end of SBBR reaction tank, and is located at the axis of SBBR reaction tank
On line；Diving mixer 40-60cm away from the bottom of SBBR reaction tank, diving mixer install abacus grid shield outside.
Further, the advanced treating pond is filtering cloth filtering pool, D type filter tank or sand filter.
Further, first aerator is micro-hole aerator, and second aerator is boring aeration device.
Further, the filler is the radial honeycomb disc structure of diameter 25mm, and filler material is that surface cation changes
Property polyethylene material, filler SBBR reaction tank filling proportion be 15%-30%.
Further, the carriage body is the carbon steel material by preservative treatment.
Further, orifice plate grid shield is 304 stainless steel materials, with a thickness of 2-3mm, aperture 15-20mm.
The beneficial effects of the present invention are:
The present invention in reasonable Arrangement SBBR reaction tank, sterilization pool, advanced treating pond, sewage sludge storage pond, clear water reserviors in carriage body,
And targetedly optimized, each pond advantage is given full play to, wastewater treatment efficiency is improved, saves occupied area, specific advantage
It is as follows:
1, diving mixer is installed in SBBR reaction tank, preferably may be provided the reaction tank water inlet end central axes SBBR away from
At 40~60cm of bottom, blender to sewage generate plug-flow effect, by middle line, in reaction tank formed stablize two-way ring
Stream, is sufficiently mixed sewage and sludge, the filler of SBBR reaction tank can also be uniformly distributed biofilm, fill with the organic principle in sewage
Tap touching can carry out flexible control in entire denitrification process, effectively reinforce the denitrification in SBBR reactor,
Overcome raw water ammonia nitrogen excessively high to load problem caused by subsequent processing.
2, inlet channel and outlet canal is respectively set in sterilization pool two sides, and SBBR reaction tank is drained by air lift, high position discharge
Water enters inlet channel and then drops to sterilization pool again, is sufficiently mixed with medicine, gas, then drops down onto advanced treating through one of outlet canal row
Pond can play the role of regulating pondage, water quality while disinfection, improve anti impulsion load.
3, the present apparatus is integrated has added a sewage sludge storage pond, is more suitable for remote small towns sewage treatment environment；Due to agriculture
Village and Small Town Wastewater amount is less, emission point dispersion, water quality and quantity fluctuation are larger, thus day sludge volume it is smaller, the sludge added
Storage pool is advantageously implemented objects under unattended condition.
Aerator is installed in sewage sludge storage pond, by intermittent aerating, so that it will not cause because being constantly in anaerobic state
Corruption effectively reduces anaerobic phosphorus release, rotten risk that sludge is generated by long term storage, reduces later period Treatment of Sludge difficulty；Together
Shi Caiyong gas stripping type spoil disposal is monitored mud amount by the pressure-type liquidometer moment, and periodically group diverts oneself from loneliness or boredom silt pumping car and is transferred into
Center station is centrally disposed, and subsequent sludge treatment expense and operation management cost of labor are reduced.
It is of the invention it is structurally reasonable simplify, it is easy for installation, buried installation both can be used, ground type installation can also be used,
Each part can use long-distance intelligent control, facilitates and realizes unattended, operational management is simple, is suitble in rural area and small
Cities and towns pond carry out extensive use popularization.
Meanwhile apparatus of the present invention have higher removal effect to high-ammonia-nitrogen sewage, treated sewage, nitrogen and phosphorus load,
COD, total nitrogen, total tp removal rate can be stablized 90% or more, and effluent quality reaches " urban wastewater treatment firm pollutant emission mark
It is quasi- " level-one A standard in GB18918-2002.
Detailed description of the invention
Fig. 1 is floor plan of the invention；
Fig. 2 is the structural schematic diagram of sterilization pool；
Fig. 3 is the structural schematic diagram of filler；
Wherein: 1- blower, 2- vortex-shedding meter, 3- solenoid valve, 4- filler, 5- air lift spoil disposal stalk, 6- second are aerated
Device, the air hose of 7- air lift spoil disposal stalk, 8- sewage sludge storage pond, 9- pressure-type liquidometer, 10- clear water reserviors, 11- air lift row
The air hose of water stalk, 12- advanced treating pond, 13- chemical feed pipe, 14- sterilization pool, 15- air lift drain stalk, 16- first
Aerator, 17-SBBR reaction tank, 171- inlet channel, 172- outlet canal, 18- orifice plate grid shield, 19- diving mixer,
20- air branch pipe.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
A kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater shown in referring to Fig.1, including
Carriage body and blower 1 are divided into SBBR reaction tank 17, sterilization pool 14, advanced treating pond 12, sewage sludge storage pond 8 inside the carriage body
With clear water reserviors 10.
The carriage body is the carbon steel material by preservative treatment, and specification includes 30m3/d、50m3/d、100m3/d、150m3/d
It is several, it can install, buried can also install on the ground.
Advanced treating pond 12 and sewage sludge storage pond 8 in the present embodiment are juxtaposed on SBBR reaction tank 17 and clear water reserviors 10
Between, sterilization pool 14 is set to the top in advanced treating pond 12.
Pressure-type liquidometer 9 is provided in the SBBR reaction tank 17, sewage sludge storage pond 8 and clear water reserviors 10.
The advanced treating pond 12 can use existing filtering cloth filtering pool, D type filter tank or sand filter.
The SBBR reaction tank 17 is that the water inlet end of whole device (does not embody, those skilled in the art can in water inlet figure
Designed, designed specific location as needed), the interior filler 4, first equipped with diving mixer 19, several suspensions of SBBR reaction tank 17
Aerator 16, air lift draining stalk 15 and air lift spoil disposal stalk 5.
The diving mixer 19 is installed on water inlet one end of neighbouring SBBR reaction tank 17, and is located at SBBR reaction tank 17
On central axes；The 40-60cm away from the bottom of SBBR reaction tank of diving mixer 19, it is anti-that diving mixer 19 installs abacus grid outside
Shield 18.
Orifice plate grid shield 18 can be 304 stainless steel materials, with a thickness of 2-3mm, aperture 15-20mm.
Referring to shown in Fig. 3, the filler of the present embodiment is the radial honeycomb disc structure of diameter 25mm, and filler material is table
The cation-modified polyethylene material in face, filler are 15%-30% in the filling proportion of SBBR reaction tank.
The air lift draining stalk 15 and air lift spoil disposal stalk 5 are ability referring to existing air lift Technology design
Mature technology means known to field technique personnel, the present embodiment are then no longer described in detail.
The sterilization pool 14 is connected with chemical feed pipe 13 and air branch pipe 20, and chemical feed pipe 13 connects external chemicals dosing plant, reference
Shown in Fig. 2, the side of sterilization pool 14 is inlet channel 171, and the other side is that (Fig. 2 is schematic diagram to outlet canal 172, can specifically be referred to
Existing water channel structure).
Inlet channel 171 drains the outlet of stalk 15 and the top of inlet channel 171 adjacent to 17 side of SBBR reaction tank, air lift
Connection, outlet canal 172 is then adjacent to 12 side of advanced treating pond；Fallen by the water of 17 air lift of SBBR reaction tank through inlet channel 171 and is disappeared
Malicious pond 14 is mixed with medicine gas, then overflow finally drops in advanced treating pond 12 to water channel 172.
The discharge outlet in the advanced treating pond 12 is connect with clear water reserviors 10 (not to be embodied, those skilled in the art in discharge outlet figure
Member can designed, designed specific location as needed).
The second aerator 6, the outlet of the air lift spoil disposal stalk 5 and sludge are provided in the sewage sludge storage pond 8
Storage pool 8 connects.
First aerator 16 is made of several micropore aeration pipes, and the second aerator 6 is exposed by several perforation
Tracheae composition, those skilled in the art can be combined arrangement, the first aerator in the present embodiment according to the needs of pond body
16 are in charge of form for eight that a supervisor connects, and the second aerator 6 is field word frame structure.
The blower 1 connects four Lu Zhiguan by main pipe, and (the instantaneous stream of record display of vortex-shedding meter 2 is equipped in main pipe
Amount, integrated flow), be mounted on solenoid valve 3 on the branch pipe of four road, four road branch pipes respectively with the first aerator 16, second
The air hose 7 of aerator 6, the air hose 11 of air lift draining stalk and air lift spoil disposal stalk connects.
Air branch pipe 20 is connect by solenoid valve 3 with the air hose 11 that air lift drains stalk.
Waste water processes of the invention are as follows:
1, it intakes the stirring phase:
Sewage enters SBBR reaction tank 17 and carries out anaerobism and hypoxia response, while starting diving mixer 19, flooding time
30-90min, when 9 feedback signal of pressure-type liquidometer in SBBR reaction tank 17 indicates that liquid level reaches setting water inlet liquid level
When H1, stop water inlet.
The entire water inlet stirring phase is formed stable by the stirring action of diving mixer 19 in SBBR reaction tank 17
Circulation is pushed, sewage and sludge is sufficiently mixed, avoids excessive sludgd deposition in 17 bottom of SBBR reaction tank, muddy water is in uniform
Fluidised form, DO (dissolved oxygen) is 0.05-0.5mg/l in SBBR reaction tank 17 at this time, anaerobic/anoxic state is in, using in water inlet
Carbon source is as electron donor, further adds into the denitrification stage, and with the help of diving mixer 19 to denitrification
By force, nitrogen is converted by most of nitrate nitrogen, reaches denitrification；As DO (dissolved oxygen) > 0.8mg/l or reach specified time,
Diving mixer 19 is out of service.
2, it is aerated the phase:
Enter the aeration phase after the water inlet stirring phase, start blower 1, the first aeration for starting SBBR reaction tank 17 immediately fills
16 are set, 1 not frequency conversion of blower；At this point, filler 4 is sufficiently mixed with activated sludge and contacts in SBBR reaction tank 17, into aerobic reaction
In the stage, duration 150-180min, during which controlling DO (dissolved oxygen) in SBBR reaction tank 17 is 2-4mg/l, in the domain of pond into
Row removes carbon and nitration reaction, and the biological film inner layer of filler 4 carries out Anammox reaction under the action of anaerobic ammonia oxidizing bacteria
Meanwhile biomembrane outer layer carries out nitrosation reaction under the action of ammonia nitriding bacterium；Shorten the reaction time by these comprehensive functions.
3, the phase is precipitated:
Stop blower 1 and the first aerator 6 after the stage of reaction, SBBR reaction tank 17 enters the precipitating phase, stands 40-
60min is separated by solid-liquid separation.
4, drainage period:
The solenoid valve 3 on 11 connecting branch of air hose of air lift draining stalk is opened, blower 1, SBBR reaction tank are started
Supernatant drains the warp of stalk 15 and inlet channel 171 by air lift in 17, and then overflow falls into sterilization pool 14, at the same time, adds
External medicine machine dosing into sterilization pool 14 that pencil 13 connects, supernatant drain the air hose of stalk by air lift simultaneously
11 air branch pipes 20 introduced are aerated, and mix water, medicine uniformly, then the outlet canal 172 through connecting with advanced treating pond 12
Overflow drops to advanced treating pond 12 and carries out advanced treating.
Clear water reserviors 10 are discharged by advanced treating pond 12 again after advanced treating to be discharged；Static pressure in SBBR reaction tank 17
When the feedback liquid level of formula liquidometer 9 is down to setting liquid level H2, then drainage period terminates, and closes blower 1 and associated solenoid valve 3.
5, the spoil disposal phase:
After drainage period, the solenoid valve 3 on 7 connecting branches of air hose of air lift spoil disposal stalk is opened, starts wind
The sludge of SBBR reaction tank 17 is drained into sewage sludge storage pond 8 by air lift spoil disposal stalk 5 by machine 1, sludge-drainage time 20-60s,
Blower 1 and associated solenoid valve 3 are closed after spoil disposal.
Wherein the Storage period in sewage sludge storage pond 8 is 15-20d, during storage, is mounted on the of 8 bottom of sewage sludge storage pond
Two aerators 6 carry out intermittent aeration to sludge, generate anaerobic phosphorus release, rotten risk to reduce sludge long term storage, keep away
Exempt from digestion.
Further, the mud amount in sewage sludge storage pond 8 is monitored by 9 moment of pressure-type liquidometer, works as sewage sludge storage
When 8 mud amount of pond reaches setting liquid level H3, sends spoil disposal suction-type sewer scavenger to be transferred into center station and centrally disposed.
6, lay-up period
Draining, the spoil disposal phase all after, when treatment sewage is not enough to carry out a batch for the treatment of capacity, SBBR reaction tank 17
Then enter idle loitering phase, waits and enter next cycle.
Rural area and Small Town Wastewater by the high ammonia nitrogen of above-mentioned flow processing, water outlet COD, total nitrogen, total tp removal rate can be steady
It is scheduled on 90% or more, effluent quality can achieve one in " urban wastewater treatment firm pollutant emission standard " GB18918-2002
Grade A standard.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (9)
1. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater, including carriage body and blower, special
Sign is: SBBR reaction tank, sterilization pool, advanced treating pond, sewage sludge storage pond and clear water reserviors are divided into inside the carriage body；It is described
It is provided with diving mixer, filler, the first aerator, air lift draining stalk and air lift spoil disposal in SBBR reaction tank and rises liquid
Pipe；The sterilization pool is connected with chemical feed pipe and air branch pipe, and the side of sterilization pool is inlet channel, and the other side is outlet canal；It is described
Air lift drains the outlet of stalk and the top of inlet channel and connects, and the outlet canal is located at the top in advanced treating pond；The depth
The discharge outlet of degree processing pond is connect with clear water reserviors；The second aerator, the air lift spoil disposal are provided in the sewage sludge storage pond
The outlet of stalk is connect with sewage sludge storage pond；The blower connects four Lu Zhiguan by main pipe, is equipped with whirlpool in the main pipe
Street flowmeter, is mounted on valve on the branch pipe of four road, four road branch pipes respectively with the first aerator, the second aerator,
The air hose of air lift draining stalk is connected with the air hose of air lift spoil disposal stalk；The air branch pipe passes through valve and air lift
Drain the air hose connection of stalk.
2. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: the advanced treating pond and sewage sludge storage pond are juxtaposed between SBBR reaction tank and clear water reserviors.
3. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: being provided with pressure-type liquidometer in the SBBR reaction tank, sewage sludge storage pond and clear water reserviors.
4. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: the diving mixer is installed on the water inlet end of SBBR reaction tank, and it is located on the central axes of SBBR reaction tank；
Diving mixer 40-60cm away from the bottom of SBBR reaction tank, diving mixer install abacus grid shield outside.
5. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: the advanced treating pond is filtering cloth filtering pool, D type filter tank or sand filter.
6. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: first aerator is micro-hole aerator, second aerator is boring aeration device.
7. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: the filler is the radial honeycomb disc structure of diameter 25mm, filler material is that surface is cation-modified
Polyethylene material, filler are 15%-30% in the filling proportion of SBBR reaction tank.
8. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: the carriage body is the carbon steel material by preservative treatment.
9. a kind of SBBR integrated apparatus handled for high ammonia nitrogen rural area and Small Town Wastewater according to claim 1,
It is characterized by: orifice plate grid shield is 304 stainless steel materials, with a thickness of 2-3mm, aperture 15-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627869.3A CN109650655B (en) | 2018-12-28 | 2018-12-28 | SBBR integrated device for sewage treatment of high-ammonia-nitrogen rural areas and small towns |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811627869.3A CN109650655B (en) | 2018-12-28 | 2018-12-28 | SBBR integrated device for sewage treatment of high-ammonia-nitrogen rural areas and small towns |
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| CN109650655A true CN109650655A (en) | 2019-04-19 |
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