CN107857364A - A kind of biological denitrificaion sewage-treatment plant and its quick start method - Google Patents
A kind of biological denitrificaion sewage-treatment plant and its quick start method Download PDFInfo
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- CN107857364A CN107857364A CN201711105431.4A CN201711105431A CN107857364A CN 107857364 A CN107857364 A CN 107857364A CN 201711105431 A CN201711105431 A CN 201711105431A CN 107857364 A CN107857364 A CN 107857364A
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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
- 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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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Abstract
The invention discloses a kind of biological denitrificaion sewage-treatment plant and its quick start method, belong to sewage disposal and environmental protection technical field.Technical scheme main points are：A kind of biological denitrificaion sewage-treatment plant, it is sequentially provided with carbon removal anaerobic fluidized bed reactor, anaerobism fluidisation tubulose membrane reactor and nitrogen along water inlet direction and removes fluidized-bed reactor.The invention further particularly discloses the quick start method of the biological denitrificaion sewage-treatment plant.The present invention need not add organic carbon source and efficient denitrification can be achieved, and sewage disposal operation energy consumption is greatly reduced；Without greenhouse gases N during Anammox2O is produced, and reduces the environment negative effect in bioanalysis sewage disposal process；Start Anammox reactions using direct vaccination ways, greatly reduce the startup optimization time；Suitable for handling low NH4 +The town domestic sewage of N concentration.
Description
Technical field
The invention belongs to sewage disposal and environmental protection technical field, and in particular to a kind of biological denitrificaion sewage-treatment plant
And its quick start method.
Background technology
In Biochemical method sanitary sewage field, traditional nitration denitrification reaction occupies main status, until anaerobism ammonia oxygen
Change the discovery of bacterium, rapidly become the study hotspot of people, and progressively turn into biological denitrificaion sewage disposal major technique of new generation.Detest
Anaerobic ammonium oxidation（Anammox）Technique is a kind of suitable high ammonia nitrogen（NH4 +-N）The novel biological dinitrification technology of wastewater treatment, is current
One of important support technology of water body polluted by nitrogen control, compared with traditional nitration denitrification reacts, energy resource consumption needed for the technique
Amount is less, sludge yield is few and cost is cheap.Anammox techniques are anaerobic ammonia oxidizing bacterias under anaerobic with nitrite nitrogen
（NO2 --N）It is electron acceptor by NH4 +- N is oxidized to the Biochemical processes of nitrogen, is a kind of biochemical process of anaerobism autotrophy, nothing
Need to supply oxygen with additional organic electron donors, nitric efficiency it is high and reaction do not produce nitrous oxide isothermal chamber gas.Therefore,
Anammox techniques are considered as a kind of efficient, economic and environmentally friendly denitrogenation technology, however, Anammox bacteria growing
Slowly, generation time is grown, and easily by external environmental condition（Temperature, pH, dissolved oxygen etc.）Influence, thus device start difficulty compared with
Greatly.In addition, NH in town domestic sewage4 +- N concentration is relatively low, generally 40-50mg/L, but its COD concentration is usually above NH4 +-N
Concentration, when COD concentration is higher, anaerobic ammonia oxidizing bacteria is difficult to survive in Anammox reactors, and treatment effeciency is relatively low.Therefore,
Anammox techniques are difficult to be applied to processing town domestic sewage field.
The content of the invention
Present invention solves the technical problem that there is provided it is a kind of being capable of efficient denitrification and the relatively low biological denitrificaion of operation energy consumption
Sewage-treatment plant and its quick start method, it is under normal temperature condition, using city domestic sewage as experimental water, using upstream
Formula fluidized system, first by cutting down COD, anaerobic ammonia oxidizing bacteria is then directly inoculated with, is transported by the equipment for adjusting reactor
Row parameter, quickly realize successfully starting up for city domestic sewage Anammox biology self-supported denitrification reactors.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, a kind of biological denitrificaion sewage-treatment plant, its
It is characterised by that being sequentially provided with carbon removal anaerobic fluidized bed reactor, anaerobism fluidisation tubulose membrane reactor and nitrogen along water inlet direction removes
Fluidized-bed reactor；
The carbon removal anaerobic fluidized bed reactor includes fluidising chamber I and settling zone I, and fluidising chamber water inlet I is by pipeline and enters
Water peristaltic pump I is connected with cesspool, is filled with particulate vector I in fluidising chamber I and adds the work of load acid-producing bacteria and methanogen
Property sludge, particulate vector I is natural zeolite pearl or with reeded plastic beads, the fluidising chamber delivery port I at the top of fluidising chamber I
Place is provided with the settling zone I communicated with fluidising chamber I, and discharge of methane mouth I is provided with the top of settling zone I, and settling zone I sides are provided with precipitation
Area delivery port I；
The anaerobism fluidisation tubulose membrane reactor includes fluidising chamber II and settling zone II, and fluidising chamber water inlet II is by pipeline and enters
Water peristaltic pump II is connected with settling zone delivery port I, and particulate vector II is filled with fluidising chamber II, and particulate vector II is natural boiling
Stone pearl or with reeded plastic beads, settling zone II, fluidising chamber II are provided with the fluidising chamber delivery port II at the top of fluidising chamber II
Connected with settling zone II by tubular film, the tubular film is porous wall construction, be external diameter be 1.2mm, internal diameter is 0.1 μm, total film
Surface area is 0.08m2Hollow-fibre membrane, discharge of methane mouth II is provided with the top of settling zone II, settling zone II sides, which are provided with, to be precipitated
Area delivery port II；
The nitrogen, which removes fluidized-bed reactor, includes fluidising chamber III and settling zone III, fluidising chamber water inlet III by pipeline and
Water inlet peristaltic pump III is connected with settling zone delivery port II, and particulate vector III and from the bottom to top successively is filled with fluidising chamber III
The activated sludge of load nitrobacteria and the activated sludge of load anaerobic ammonia oxidizing bacteria are added, particulate vector III is natural boiling
Stone pearl is provided with aeration head with reeded plastic beads, fluidising chamber III bottom, and the aeration head is controlled by tracheae and PLC
Device is connected, and fluidising chamber III bottom and middle part are respectively equipped with DO and popped one's head in, at the fluidising chamber delivery port III at the top of fluidising chamber III
Provided with the settling zone III communicated with fluidising chamber III, Waste gas outlet is provided with the top of settling zone III, settling zone III sides are set
There is settling zone delivery port III, settling zone delivery port III is connected by pipeline with blow-off line.
The quick start method of biological denitrificaion sewage-treatment plant of the present invention, it is characterised in that detailed process is：
（1）Sewage enters in the presence of peristaltic pump I of intaking from the fluidising chamber water inlet I of carbon removal anaerobic fluidized bed reactor first
Enter fluidising chamber I, the particulate vector I in flow velocity fluidising chamber I by adjusting water inlet peristaltic pump I is in suspended state, fluidizes
In the presence of extracellular microbial exoenzyme hydrolysis occurs for a part of COD in the I of room in sewage, by the organic compound in COD
Amino acid, carbohydrate and aliphatic acid are decomposed into, acid-producing occurs in the presence of acid-producing bacteria, by amino acid, carbohydrate and aliphatic acid
Change into aliphatic acid, the H containing 4 or less than 4 carbon on main chain2And CO2, it is anti-that methane phase occurs in the presence of methanogen
Should, by the aliphatic acid containing 4 or less than 4 carbon on main chain, H2And CO2Change into methane and CO2, it is anti-through hydrolysis, production acid
It should be discharged with the reacted sewage of methane phase after settling zone I free sedimentations from settling zone delivery port I, caused methane and CO2
From discharge of methane mouth I discharges and Collection utilization；
（2）The sewage discharged from carbon removal anaerobic fluidized bed reactor settling zone delivery port I is in the presence of peristaltic pump II of intaking
Enter fluidising chamber II from the fluidising chamber water inlet II of anaerobism fluidisation tubulose membrane reactor, by the flow velocity for adjusting water inlet peristaltic pump II
So that the particulate vector II in fluidising chamber II is in suspended state, for cleaning tubular film surface naturally, part in running
Sewage is carried out from secondary in anaerobism fluidisation tubulose membrane reactor from the microorganism that carbon removal anaerobic fluidized bed reactor flows into
Reason, for removing suspension and COD in sewage, the sewage after processing is after settling zone II free sedimentations from settling zone delivery port
II is discharged, caused methane and CO2From discharge of methane mouth II discharges and Collection utilization；
（3）The sewage discharged from anaerobism fluidisation tubulose membrane reactor settling zone delivery port II is in the presence of peristaltic pump III of intaking
The fluidising chamber water inlet III that fluidized-bed reactor is removed from nitrogen enters fluidising chamber III, by the stream for adjusting water inlet peristaltic pump III
Speed causes the particulate vector III in fluidising chamber III to be in suspended state, and sewage flows through bottom up 1/5 regions of fluidising chamber III
It is interior, the activated sludge of load nitrobacteria is added in the region, provides oxygen by PLC control devices to control the molten of the region
Solution oxygen concentration is 0.1-0.5mg/L, and hydraulic detention time is 1-2 days, and short distance nitration reaction occurs in the case where nitrobacteria acts on, will
Part NH in sewage4 +- N is oxidized to NO2 -- N, so as to NO necessary to be provided for anaerobic ammonia oxidizing bacteria2 -- N response matrix, passes through PLC
Control device control aeration quantity makes dissolved oxygen be entirely used for short distance nitration reaction, is flowed through then in the sewage under oxygen-free environment
Change in the bottom up 1/5-3/5 regions of room III, the activated sludge of load anaerobic ammonia oxidizing bacteria is added in the region, in anaerobism
Ammonia oxidation bacteria effect is lower to occur Anammox reactions, with NH4 +- N is electron donor, with NO2 -- N is electron acceptor, directly by residue
NH4 +- N and NO2 -- N changes into N2, N2Be directly released into from Waste gas outlet in air, the sewage after processing through settling zone III from
By after precipitating, from settling zone, delivery port III is discharged into blow-off line.
Further preferably, step（1）Middle mixed genetic-neural network is 22500mg/L, and mixed liquor volatility suspends solid
Bulk concentration is 5500mg/L.
Further preferably, step（3）Middle mixed genetic-neural network is 2000-3000mg/L, and mixed liquor suspends admittedly
Bulk concentration/mixed liquor volatile suspended solid, MLVSS concentration=0.6-0.85.
The present invention has the advantages that compared with prior art：
1st, the present invention need not add organic carbon source and efficient denitrification can be achieved, and sewage disposal operation energy consumption is greatly reduced；
2nd, without greenhouse gases N during Anammox of the present invention2O is produced, and the environment reduced in bioanalysis sewage disposal process is born
Face effect；
3rd, the present invention starts Anammox reactions using direct vaccination ways, greatly reduces the startup optimization time；
4th, the present invention is applied to handle low NH4 +The town domestic sewage of-N concentration.
Brief description of the drawings
Fig. 1 is the structural representation of sewage-treatment plant in the present invention；
Fig. 2 is the sewage main pollutant consistence and clearance datagram after present invention processing.
In figure：1- carbon removal anaerobic fluidized bed reactors, 1-1- water inlet peristaltic pump I, 1-2- fluidising chamber water inlet I, 1-3-
Particulate vector I, 1-4- fluidising chamber I, 1-5- fluidising chamber delivery port I, 1-6- settling zones I, 1-7- discharge of methane mouth I, 1-8- precipitation
Area delivery port I, 2- anaerobism fluidisation tubulose membrane reactor, 2-1- water inlet peristaltic pump II, 2-2- fluidising chamber water inlet II, 2-3- particles
Carrier II, 2-4- fluidising chamber II, 2-5- fluidising chamber delivery port II, 2-6- settling zones II, 2-7- discharge of methane mouth II, 2-8- precipitation
Area delivery port II, 2-9- tubular films, 3- nitrogen remove fluidized-bed reactor, 3-1- water inlet peristaltic pump III, 3-2- fluidising chamber water inlet
III, 3-3- particulate vector III, 3-4- fluidising chamber III, 3-5- fluidising chamber delivery port III, 3-6- settling zones III, 3-7- waste gas
Floss hole, 3-8- settling zones delivery port III, 3-9- aeration heads, 4-0-DO probes, 4-1-PLC control devices.
Embodiment
The above of the present invention is described in further detail by the following examples, but this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, and all technologies realized based on the above of the present invention belong to this hair
Bright scope.The present invention is described in detail by way of example and in conjunction with the accompanying drawings.
Referring to the drawings 1, a kind of biological denitrificaion sewage-treatment plant, it is anaerobic fluidized bed to be sequentially provided with carbon removal along water inlet direction
Reactor 1, anaerobism fluidisation tubulose membrane reactor 2 and nitrogen remove fluidized-bed reactor 3；
The carbon removal anaerobic fluidized bed reactor 1 includes fluidising chamber I1-4 and settling zone I1-6, and fluidising chamber water inlet I1-2 leads to
Piping and water inlet peristaltic pump I1-1 are connected with cesspool, and particulate vector I1-3 is filled with fluidising chamber I1-4 and adds load production
Sour bacterium and the activated sludge of methanogen, particulate vector I1-3 is for natural zeolite pearl or with reeded plastic beads, fluidisation
The settling zone I1-6 communicated with fluidising chamber I1-4, settling zone I1-6 tops are provided with fluidising chamber delivery port I1-5 at the top of the I1-4 of room
Portion is provided with discharge of methane mouth I1-7, and settling zone I1-6 sides are provided with settling zone delivery port I1-8；
The anaerobism fluidisation tubulose membrane reactor 2 includes fluidising chamber II2-4 and settling zone II2-6, and fluidising chamber water inlet II2-2 leads to
Piping and water inlet peristaltic pump II2-1 are connected with settling zone delivery port I1-8, and particulate vector II2- is filled with fluidising chamber II2-4
3, particulate vector II2-3 are natural zeolite pearl or with reeded plastic beads, fluidising chamber's water outlet at the top of fluidising chamber II2-4
Settling zone II2-6, fluidising chamber II2-4 and settling zone II2-6 are provided with mouth II2-5 to connect by tubular film 2-9, tubular film 2-
9 be porous wall construction, be external diameter be 1.2mm, internal diameter is 0.1 μm, total film surface area is 0.08m2Hollow-fibre membrane, settling zone
Discharge of methane mouth II2-7 is provided with the top of II2-6, settling zone II2-6 sides are provided with settling zone delivery port II2-8；
The nitrogen, which removes fluidized-bed reactor 3, includes fluidising chamber III3-4 and settling zone III3-6, fluidising chamber water inlet III3-2
It is connected by pipeline and water inlet peristaltic pump III3-1 with settling zone delivery port II2-8, is carried in fluidising chamber III3-4 filled with particle
Body III3-3 simultaneously adds the activated sludge of load nitrobacteria and the activated sludge of load anaerobic ammonia oxidizing bacteria successively from the bottom to top,
Particulate vector III3-3 is natural zeolite pearl or is provided with aeration head with reeded plastic beads, fluidising chamber III3-4 bottom
3-9, aeration head 3-9 are connected by tracheae with PLC control devices 4-1, and fluidising chamber III3-4 bottom and middle part are respectively equipped with
The precipitation communicated with fluidising chamber III3-4 is provided with fluidising chamber delivery port III3-5 at the top of DO probes 4-0, fluidising chamber III3-4
Waste gas outlet 3-7 is provided with the top of area III3-6, settling zone III3-6, settling zone III3-6 sides are provided with settling zone delivery port
III3-8, settling zone delivery port III3-8 are connected by pipeline with blow-off line.
The quick start method of biological denitrificaion sewage-treatment plant of the present invention, detailed process are：
（1）Sewage enters in the presence of peristaltic pump I of intaking from the fluidising chamber water inlet I of carbon removal anaerobic fluidized bed reactor first
Enter fluidising chamber I, hydraulic detention time 2h, the particulate vector I in flow velocity fluidising chamber I by adjusting water inlet peristaltic pump I
In suspended state, in order that the microorganism in fluidising chamber I adapts to environment, the activated sludge of loading microorganisms is also added to fluidisation
In the I of room, biomembrane is formed on a part of microorganism adsorption to particulate vector, the activated sludge in running is derived from sewage disposal
The anaerobic nitrification pond of factory, dosage 500mL, mixed genetic-neural network（MLSS）For 22500mg/L, mixed liquor volatility
Suspended sediment concentration（MLVSS）For 5500mg/L, the effect of a part of COD in fluidising chamber I in sewage in extracellular microbial exoenzyme
Raw hydrolysis is issued, the organic compound in COD is decomposed into amino acid, carbohydrate and aliphatic acid, in the presence of acid-producing bacteria
Generation acid-producing, amino acid, carbohydrate and aliphatic acid are changed into aliphatic acid, H containing 4 or less than 4 carbon on main chain2With
CO2, methane phase reaction occurs in the presence of methanogen, by the aliphatic acid containing 4 or less than 4 carbon on main chain, H2With
CO2Change into methane and CO2, through hydrolysis, acid-producing and the reacted sewage of methane phase after settling zone I free sedimentations
Discharged from settling zone delivery port I, caused methane and CO2Need to tie up from discharge of methane mouth I discharges and Collection utilization, fluidising chamber I
Anaerobic environment is held, is run in the case of no oxygen supply, in the process of running, the nitrogen-containing compound in COD is converted into
NH4 +-N；
（2）The sewage discharged from carbon removal anaerobic fluidized bed reactor settling zone delivery port I is in the presence of peristaltic pump II of intaking
Enter fluidising chamber II from the fluidising chamber water inlet II of anaerobism fluidisation tubulose membrane reactor, hydraulic detention time 2-3h, pass through tune
Whole water inlet peristaltic pump II flow velocity causes the particulate vector II in fluidising chamber II to be in suspended state, because particulate vector II is flowing
Suspended state is under the impetus of dynamic sewage, tubular film surface can be cleaned naturally, it is not necessary to chemical cheaning tubular film,
It is anaerobic environment in anaerobism fluidisation tubulose membrane reactor, without oxygen supply, part fluidizes from carbon removal anaerobism in running
The microorganism that bed reactor flows into carries out after-treatment in anaerobism fluidisation tubulose membrane reactor to sewage, for removing in sewage
Suspension and COD, sewage after processing discharges after settling zone II free sedimentations from settling zone delivery port II, caused methane
And CO2From discharge of methane mouth II discharges and Collection utilization；
（3）The sewage discharged from anaerobism fluidisation tubulose membrane reactor settling zone delivery port II is in the presence of peristaltic pump III of intaking
The fluidising chamber water inlet III that fluidized-bed reactor is removed from nitrogen enters fluidising chamber III, by the stream for adjusting water inlet peristaltic pump III
Speed causes the particulate vector III in fluidising chamber III to be in suspended state, and sewage flows through bottom up 1/5 regions of fluidising chamber III
It is interior, the activated sludge of load nitrobacteria is added in the region, provides oxygen by PLC control devices to control the molten of the region
Solution oxygen concentration is 0.1-0.5mg/L, and hydraulic detention time is 1-2 days, and short distance nitration reaction occurs in the case where nitrobacteria acts on, will
Part NH in sewage4 +- N is oxidized to NO2 -- N, so as to provide NO necessary to anaerobic ammonia oxidizing bacteria2 -- N response matrix, is controlled by PLC
Device processed control aeration quantity makes dissolved oxygen be entirely used for short distance nitration reaction, due to the dissolved oxygen in leading portion region be entirely used for it is short
Journey nitration reaction, be oxygen-free environment in sewage now, then in the sewage under oxygen-free environment flow through fluidising chamber III bottoms to
In upper 1/5-3/5 regions, the activated sludge of load anaerobic ammonia oxidizing bacteria is added in the region, under anaerobic ammonia oxidizing bacteria effect
Generation Anammox reacts, with NH4 +- N is electron donor, with NO2 -- N is electron acceptor, directly by remaining NH4 +- N and NO2 -- N turns
It is melted into N2, N2It is directly released into from Waste gas outlet in air, the sewage after processing is after settling zone III free sedimentations from precipitation
Area delivery port III is discharged into blow-off line, mixed genetic-neural network（MLSS）For 2000-3000mg/L, MVSS/MLVSS=
0.6-0.85。
Specific embodiment：
Using certain community life sewage as experimental water, specific water quality is as follows for experiment：COD concentration is 300-400mg/L, SS=50-
70mg/L, NH4 +- N=50-80mg/L, NO2 -- N≤0.3mg/L, NO3 -- N≤1.5mg/L, TP≤1mg/L, pH=7.0-8.0,
Sewage load is 80L/d, and carbon removal anaerobic fluidized bed reactor and nitrogen remove the activated sludge difference in fluidized-bed reactor
Tamed.
（1）The organic loading rate of carbon removal anaerobic fluidized bed reactor is controlled in 1.75-4.7kg/m3/ d, hydraulic retention
Time is 2h, MLSS=22500mg/L, MLVSS=5500mg/L.
（2）The membrane flux of anaerobism fluidisation membrane reactor is controlled in 8.33-12.5LMH, hydraulic detention time 2-3h.
（3）Seed sludge suspended solid MLSS concentration is 2000-3000mg/L, and MLVSS/MLSS=0.6-0.85, dissolving
In 0.1-0.5mg/L, hydraulic detention time is 1-2 days for oxygen control.
In an experiment, sanitary sewage successively enters from carbon removal anaerobic fluidized bed reactor, in order to confirm carbon removal
Anaerobic fluidized bed reactor, anaerobism tubulose membrane reactor are to COD and suspension removal effect, and major pollutants refer to before and after water inlet
Mark is as shown in table 1.In table 1, AFBR represents carbon removal anaerobic fluidized bed reactor, and AFMBR represents anaerobism tubulose membrane reactor.This
In table, except pH value, the unit of other water inlet water outlets is unified to be represented with mg/L.As a result show, the anaerobic fluidized bed reaction of carbon removal
Device and anaerobism fluidisation membrane reactor reach 86.5% to COD clearances, and the clearance of total suspended matter reaches 95.0%.Ran
Cheng Zhong, the activated sludge of loading microorganisms and ectoenzyme may enter with sewage in carbon removal anaerobic fluidized bed reactor
Anaerobism fluidizes membrane reactor, and because anaerobism tubulose membrane reactor is also anaerobic environment, a part of COD can turn in the reactor
It is melted into methane and CO2。
The carbon removal anaerobic fluidized bed reactor of table 1 and anaerobism tubulose membrane reactor Inlet and outlet water major pollutants index
During Anammox reaction unit startup optimizations, the hydraulic detention time of the 1-16 days is 36h, and the waterpower of the 17-40 days is stopped
It is 24h to stay the time.At the 40th day, nitrogen removes TN and NH in fluidized-bed reactor4 +- N clearances reach more than 90%, and run
It is stable, indicate that nitrogen removes the completion that fluidized-bed reactor starts.Sewage main pollutant consistence and clearance after processing are such as
Shown in table 2, Fig. 2, water outlet reaches urban wastewater treatment one-level A standards.
The nitrogen of table 2 removes fluidized-bed reactor Inlet and outlet water water quality
As can be seen that NH from above-described embodiment4 +- N average removal rates be 91.0%, the 1st day, NH4 +- N clearances reach
78.8%, in first 11 days, NH4 +- N clearances are stable more than 65%, since the 12nd day, NH4 +- N clearances are stable 85%
More than.The average removal rate of total nitrogen is 87.5%, and stably more than 70%, it is stable more than 96% since the 30th day.Using this
Invention device and startup method, to low NH4 +- N concentration waste water has obvious treatment effect, and can realize the fast of Anammox techniques
Speed startup, is 40 days or so the time required to starting, and starts technique compared to existing Anammoxization, and the startup time greatly shortens,
And can realize that normal temperature starts, greatly save the energy consumption brought in the prior art due to temperature control.
After above-mentioned simulated experiment result can be seen that device startup optimization, can even running at normal temperatures, more pacify
It is complete reliable.Also, sewage disposal system provided by the invention is highly effective in terms of COD is reduced.Sewage disposal system meeting
Methane is produced, can collect and be converted into energy, finally produce N2Without producing N2O, it is pollution-free, and go out the particle of aqueous suspension
Concentration substantially reduces.Therefore, the present invention has preferable application prospect with as biological water technology popularization and application of future generation.
Have been shown and described above the general principle of the present invention, principal character and advantage, do not depart from spirit of the invention and
On the premise of scope, the present invention also has various changes and modifications, and these changes and improvements both fall within claimed invention
Scope.
Claims (4)
1. a kind of biological denitrificaion sewage-treatment plant, it is characterised in that it is anaerobic fluidized bed anti-to be sequentially provided with carbon removal along water inlet direction
Device, anaerobism fluidisation tubulose membrane reactor and nitrogen is answered to remove fluidized-bed reactor；
The carbon removal anaerobic fluidized bed reactor includes fluidising chamber I and settling zone I, and fluidising chamber water inlet I is by pipeline and enters
Water peristaltic pump I is connected with cesspool, is filled with particulate vector I in fluidising chamber I and adds the work of load acid-producing bacteria and methanogen
Property sludge, particulate vector I is natural zeolite pearl or with reeded plastic beads, the fluidising chamber delivery port I at the top of fluidising chamber I
Place is provided with the settling zone I communicated with fluidising chamber I, and discharge of methane mouth I is provided with the top of settling zone I, and settling zone I sides are provided with precipitation
Area delivery port I；
The anaerobism fluidisation tubulose membrane reactor includes fluidising chamber II and settling zone II, and fluidising chamber water inlet II is by pipeline and enters
Water peristaltic pump II is connected with settling zone delivery port I, and particulate vector II is filled with fluidising chamber II, and particulate vector II is natural boiling
Stone pearl or with reeded plastic beads, settling zone II, fluidising chamber II are provided with the fluidising chamber delivery port II at the top of fluidising chamber II
Connected with settling zone II by tubular film, the tubular film is porous wall construction, be external diameter be 1.2mm, internal diameter is 0.1 μm, total film
Surface area is 0.08m2Hollow-fibre membrane, discharge of methane mouth II is provided with the top of settling zone II, settling zone II sides, which are provided with, to be precipitated
Area delivery port II；
The nitrogen, which removes fluidized-bed reactor, includes fluidising chamber III and settling zone III, fluidising chamber water inlet III by pipeline and
Water inlet peristaltic pump III is connected with settling zone delivery port II, and particulate vector III and from the bottom to top successively is filled with fluidising chamber III
The activated sludge of load nitrobacteria and the activated sludge of load anaerobic ammonia oxidizing bacteria are added, particulate vector III is natural boiling
Stone pearl is provided with aeration head with reeded plastic beads, fluidising chamber III bottom, and the aeration head is controlled by tracheae and PLC
Device is connected, and fluidising chamber III bottom and middle part are respectively equipped with DO and popped one's head in, at the fluidising chamber delivery port III at the top of fluidising chamber III
Provided with the settling zone III communicated with fluidising chamber III, Waste gas outlet is provided with the top of settling zone III, settling zone III sides are set
There is settling zone delivery port III, settling zone delivery port III is connected by pipeline with blow-off line.
A kind of 2. quick start method of the biological denitrificaion sewage-treatment plant described in claim 1, it is characterised in that specific mistake
Cheng Wei：
（1）Sewage enters in the presence of peristaltic pump I of intaking from the fluidising chamber water inlet I of carbon removal anaerobic fluidized bed reactor first
Enter fluidising chamber I, the particulate vector I in flow velocity fluidising chamber I by adjusting water inlet peristaltic pump I is in suspended state, fluidizes
In the presence of extracellular microbial exoenzyme hydrolysis occurs for a part of COD in the I of room in sewage, by the organic compound in COD
Amino acid, carbohydrate and aliphatic acid are decomposed into, acid-producing occurs in the presence of acid-producing bacteria, by amino acid, carbohydrate and aliphatic acid
Change into aliphatic acid, the H containing 4 or less than 4 carbon on main chain2And CO2, it is anti-that methane phase occurs in the presence of methanogen
Should, by the aliphatic acid containing 4 or less than 4 carbon on main chain, H2And CO2Change into methane and CO2, it is anti-through hydrolysis, production acid
It should be discharged with the reacted sewage of methane phase after settling zone I free sedimentations from settling zone delivery port I, caused methane and CO2
From discharge of methane mouth I discharges and Collection utilization；
（2）The sewage discharged from carbon removal anaerobic fluidized bed reactor settling zone delivery port I is in the presence of peristaltic pump II of intaking
Enter fluidising chamber II from the fluidising chamber water inlet II of anaerobism fluidisation tubulose membrane reactor, by the flow velocity for adjusting water inlet peristaltic pump II
So that the particulate vector II in fluidising chamber II is in suspended state, for cleaning tubular film surface naturally, part in running
Sewage is carried out from secondary in anaerobism fluidisation tubulose membrane reactor from the microorganism that carbon removal anaerobic fluidized bed reactor flows into
Reason, for removing suspension and COD in sewage, the sewage after processing is after settling zone II free sedimentations from settling zone delivery port
II is discharged, caused methane and CO2From discharge of methane mouth II discharges and Collection utilization；
（3）The sewage discharged from anaerobism fluidisation tubulose membrane reactor settling zone delivery port II is in the presence of peristaltic pump III of intaking
The fluidising chamber water inlet III that fluidized-bed reactor is removed from nitrogen enters fluidising chamber III, by the stream for adjusting water inlet peristaltic pump III
Speed causes the particulate vector III in fluidising chamber III to be in suspended state, and sewage flows through bottom up 1/5 regions of fluidising chamber III
It is interior, the activated sludge of load nitrobacteria is added in the region, provides oxygen by PLC control devices to control the molten of the region
Solution oxygen concentration is 0.1-0.5mg/L, and hydraulic detention time is 1-2 days, and short distance nitration reaction occurs in the case where nitrobacteria acts on, will
Part NH in sewage4 +- N is oxidized to NO2 -- N, so as to NO necessary to be provided for anaerobic ammonia oxidizing bacteria2 -- N response matrix, passes through PLC
Control device control aeration quantity makes dissolved oxygen be entirely used for short distance nitration reaction, is flowed through then in the sewage under oxygen-free environment
Change in the bottom up 1/5-3/5 regions of room III, the activated sludge of load anaerobic ammonia oxidizing bacteria is added in the region, in anaerobism
Ammonia oxidation bacteria effect is lower to occur Anammox reactions, with NH4 +- N is electron donor, with NO2 -- N is electron acceptor, directly by residue
NH4 +- N and NO2 -- N changes into N2, N2Be directly released into from Waste gas outlet in air, the sewage after processing through settling zone III from
By after precipitating, from settling zone, delivery port III is discharged into blow-off line.
3. the quick start method of biological denitrificaion sewage-treatment plant according to claim 2, it is characterised in that step
（1）Middle mixed genetic-neural network is 22500mg/L, and mixed liquor volatile suspended solid, MLVSS concentration is 5500mg/L.
4. the quick start method of biological denitrificaion sewage-treatment plant according to claim 2, it is characterised in that step
（3）Middle mixed genetic-neural network is 2000-3000mg/L, and mixed genetic-neural network/mixed liquor volatility suspends
Solid concentration=0.6-0.85.
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| CN111115798A (en) * | 2019-12-27 | 2020-05-08 | 江苏新申奥生物科技有限公司 | Artificial microbial activated sludge and preparation method and application thereof |
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| CN105692904A (en) * | 2016-04-23 | 2016-06-22 | 北京工业大学 | Method and device for achieving integrated anaerobic ammonia oxidation autotrophic denitrification of urban sewage |
| CN105800865A (en) * | 2015-01-15 | 2016-07-27 | 黎明兴技术顾问股份有限公司 | Wastewater treatment system |
| CN207418387U (en) * | 2017-11-10 | 2018-05-29 | 河南师范大学 | A kind of town domestic sewage treatment device |
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| CN105800865A (en) * | 2015-01-15 | 2016-07-27 | 黎明兴技术顾问股份有限公司 | Wastewater treatment system |
| CN105692904A (en) * | 2016-04-23 | 2016-06-22 | 北京工业大学 | Method and device for achieving integrated anaerobic ammonia oxidation autotrophic denitrification of urban sewage |
| CN207418387U (en) * | 2017-11-10 | 2018-05-29 | 河南师范大学 | A kind of town domestic sewage treatment device |
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| CN111115798A (en) * | 2019-12-27 | 2020-05-08 | 江苏新申奥生物科技有限公司 | Artificial microbial activated sludge and preparation method and application thereof |
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