CN208327705U - The novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height - Google Patents
The novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height Download PDFInfo
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- CN208327705U CN208327705U CN201820394133.5U CN201820394133U CN208327705U CN 208327705 U CN208327705 U CN 208327705U CN 201820394133 U CN201820394133 U CN 201820394133U CN 208327705 U CN208327705 U CN 208327705U
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Abstract
The utility model provides a kind of novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height, including coagulating basin, the first sedimentation basin, heterotrophic denitrification pond, the second sedimentation basin, denitrification of autotrophic organism pond and the third sedimentation basin sequentially connected.The utility model has the beneficial effects that can remove the suspended matter of 85%-98% and the organic matter of 85%-95% in raw water by coagulating basin, the first sedimentation basin and heterotrophic denitrification pond；It can remove the nitrate nitrogen that 80%-90% denitrification of autotrophic organism pond generates by heterotrophic denitrification pond；It can remove the ammonia nitrogen of 95%-99% in raw water by denitrification of autotrophic organism pond；The total nitrogen of 90%-98% in raw water can be removed by the present apparatus, nitrogen volume elimination capacity rate can reach 2.5-10kg/ (m3·d).High nitrogenous low carbon-nitrogen ratio sewage pass through the utility model proposes device handle after effluent quality reach national relevant emission standards.
Description
Technical field
The utility model is suitable for field of biological sewage treatment, and in particular at the novel nitrogenous low carbon-nitrogen ratio sewage of height of one kind
Manage device.
Background technique
With increasingly developed industrial or agricultural, rapidly the Living consumption of the urban population and continuous improvement concentrated is various existing
The appearance of elephant, a large amount of high nitrogenous compound are drained into water body environment, cause serious water body nitrate pollution.In recent years at me
In the main contamination index of state's water environment, it is the important of water pollution that ammonia nitrogen, which becomes most important pollutant in water body nitrate pollution,
One of pollutant.
Traditional nitrification-denitrification technique is mostly used to carry out denitrogenation processing high nitrogenous low carbon-nitrogen ratio sewage at present, it is this
Technique has that energy consumption is high.It also needs to add additional carbon especially for the nitrogenous low carbon-nitrogen ratio sewage of height of low ratio of carbon to ammonium
Source, to increase sewage treatment plant's processing cost.Using short distance nitration-anaerobic ammoxidation as the denitrification of autotrophic organism technique of core
Compared with traditional nitration denitrification technique, denitrification of autotrophic organism technique is not necessarily to additional carbon, and oxygen demand is low, can significantly reduce fortune
Row expense；Sludge yield is few, avoids secondary pollution.Denitrification of autotrophic organism technique can be by anaerobic ammonia oxidizing bacteria directly by ammonia nitrogen
It is converted to nitrogen with nitrite nitrogen, is had compared with aerobic nitrification/anoxic denitrification technique and is saved carbon source 100%, reduces exposure
The advantage low with sludge yield of gas energy consumption 60%.
Although the high nitrogenous low carbon-nitrogen ratio sewage of denitrification of autotrophic organism process has lot of advantages, in practical application
In, denitrification of autotrophic organism sludge there is a problem in that: (1) due to the anaerobic ammonia oxidizing bacteria growth cycle in autotrophic denitrification sludge
Time is long, makes autotrophic denitrification sludge slow growth, causes the concentration of denitrification of autotrophic organism sludge low, so as to cause processing load
It is low；(2) simultaneously when the suspended matter and higher organic concentration content in sewage, the denitrification ability meeting of denitrification of autotrophic organism technique
Significantly inhibited；(3) nitrate nitrogen is generated in denitrification of autotrophic organism technique, according to the reaction of denitrification of autotrophic organism technique
Formula, denitrification of autotrophic organism technique can only achieve 88.7% to the highest theory removal rate of Determination of Total Nitrogen in Waste Water, so as to cause from health
Object denitrification process has that being discharged total nitrogen concentration is difficult to qualified discharge；(4) at this stage in denitrification of autotrophic organism process operation
In, the early warning system of the operating condition of denitrification of autotrophic organism technique can not timely reflect the operation shape of denitrification of autotrophic organism technique
State, always when larger fluctuation occurs in the control parameter of denitrification of autotrophic organism technique and denitrification of autotrophic organism technique has already appeared sternly
Early warning is just carried out when the case where weight unstability, and needs to carry out at this time to regulate and control can just make system reconstructing stable operation for a long time.It is existing
Denitrification of autotrophic organism technique early warning system there are problems that response lag to the early warning of technique, cannot predict reactor in time
Unstability and reactor is regulated and controled in time, therefore it is difficult to ensure that reactor is run steadily in the long term.
It needs to solve when in conclusion using denitrification of autotrophic organism technical treatment for high nitrogenous low carbon-nitrogen ratio sewage at present
Main problem include: how to be quickly enriched with to denitrification of autotrophic organism sludge, how reduce and remove in nitrogenous effluent
Organic matter and suspended matter are on autotrophic denitrification biology content and active influence, how to remove nitre in the water outlet of denitrification of autotrophic organism device
Phosphate content is exceeded, how to realize to denitrification of autotrophic organism technique progress early warning fast and accurately.How to overcome it is existing these
The defect of technology, it has also become the art needs the project studied and solved.
Summary of the invention
The purpose of the utility model is to provide a kind of novel nitrogenous low carbon-nitrogen ratio sewage processing units of height, solve high nitrogenous low
Suspended matter and organic matter are enriched with autotrophic denitrification biology content and active influence, denitrification of autotrophic organism sludge in carbon-nitrogen ratio sewage
Concentration is low, run unstability early warning not in time, treatment process operating cost is high and the underproof problem of index of water outlet total nitrogen.
In order to solve the above technical problems, the utility model provides a kind of novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height,
Including coagulating basin, the first sedimentation basin, heterotrophic denitrification pond, the second sedimentation basin, denitrification of autotrophic organism pond and the third sequentially connected
Sedimentation basin.
The effect of the utility model is:
(1) in coagulating basin and the first sedimentation basin, under the action of adding coagulant, pass through coagulating basin and the first sedimentation basin
Coagulating sedimentation effect, the suspended matter of 85%-98% can be removed, while removing the organic matter of 20%-35%.
It (2) is removal nitrate nitrogen and organic matter in heterotrophic denitrification pond.Under the action of heterotrophic denitrification bacterium,
Denitrification is carried out using the nitrate nitrogen in the organic matter and recycling effluent in water inlet, nitrate nitrogen is become nitrogen, is gone simultaneously
Except the organic matter in water inlet, to reduce the organic matter in denitrification of autotrophic organism technique.It is removed by heterotrophic denitrification pond different
The organic matter of 75%-90% in the water inlet of denitrification pond is supported, while removing the nitrate of 80%-90% denitrification of autotrophic organism pond generation
Nitrogen.By adding fixed bio-carrier, the sludge concentration in heterotrophic denitrification pond is maintained at 10000mg/L or more.
(3) in the second sedimentation basin, the second sedimentation basin carries out solid-liquid point by the water mixed liquid that goes out to heterotrophic denitrification pond
From the sludge to precipitate is returned to heterotrophic denitrification pond.The water outlet in heterotrophic denitrification pond is mixed by the second sedimentation basin
Liquid is separated by solid-liquid separation, and concentration of suspension≤30mg/L is discharged.
(4) in denitrification of autotrophic organism pond, by adding suspended biological carrier in denitrification of autotrophic organism pond, using modification
It is micro- to the autotrophic denitrification of different function can to provide a space parallax for microorganism using modified Raschig ring carrier for Raschig ring carrier
Biology provides respectively suitable ecological niche respectively: short distance nitration bacterium grows in the aerobic zone of the outside of carrier, anaerobic ammonia oxidizing bacteria
Anoxic zone growth inside carrier.In external short distance nitration bacterium using the dissolved oxygen in water body about 50% in water inlet
Ammonium oxidation utilizes the nitrite of short distance nitration bacterium generation at nitrite nitrogen in the anaerobic ammonia oxidizing bacteria of carrier inside later
Nitrogen and remaining ammonia nitrogen carry out effect and generate nitrogen, thus the ammonia nitrogen removal in sewage.It is cut simultaneously using suspended biological carrier
The effect for staying device was enriched with denitrification of autotrophic organism sludge in 3-5 months, and in denitrification of autotrophic organism pond from
Health object denitrifying sludge concentration is maintained at 10000mg/L or more；Simultaneously because the removal of the organic matter in raw water, to reduce
The total nitrogen processing load of influence to denitrification of autotrophic organism sludge, denitrification of autotrophic organism pond reaches 2.7-7.2kg/ (m3D),
The removal rate of ammonia nitrogen in water inlet reaches 95%-99%.
(5) in third sedimentation basin, third sedimentation basin carries out solid-liquid by the water mixed liquid that goes out to denitrification of autotrophic organism pond
Separation, is returned to denitrification of autotrophic organism pond by suspended biological carrier device for trapping for the sludge to precipitate.It is heavy by third
Shallow lake pond is separated by solid-liquid separation the water mixed liquid that in denitrification of autotrophic organism pond, is discharged concentration of suspension≤45mg/L.
(6) sewage between coagulating basin and the first sedimentation basin, between the first sedimentation basin and heterotrophic denitrification pond, second precipitating
It is flowed between pond and denitrification of autotrophic organism pond by overflow type, heterotrophic denitrification pond and the second sedimentation basin, denitrification of autotrophic organism
Pond and third sedimentation basin are all made of Round Sump, save sludge reflux pump and pipeline, reduce hydraulic loss, and entire technique can subtract
The processing cost of few 20%-30%.
(7) online to air blower, denitrification of autotrophic organism pond combined type by PLC controller in denitrification of autotrophic organism pond
The real time monitorings such as detector, heating rod and effluent recycling pump are to regulate and control denitrification of autotrophic organism reactor；Pass through control
Dissolved oxygen in denitrification of autotrophic organism pond 0.3-1mg/L, temperature 30-35 DEG C, effluent recycling ratio 0.5-10, free ammonia and
The concentration of free nitrous acid changes with time in the concentration of 1-25mg/L and 5-20 μ g/L, free nitrous acid and free ammonia respectively
Rate is respectively smaller than 20 μ g/ (Ld) and 25mg/ (Ld), and when the above parameter is more than variation range, robot control system(RCS) is given a warning
To carry out early warning, to regulate and control to these parameters, these parameters are controlled in control range, to guarantee autotroph
The stable operation of denitrification tank, effluent quality reaches national relevant emission standards after guarantee processing.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
In figure:
1, coagulating basin 2, the first sedimentation basin 3, heterotrophic denitrification pond 4, the second sedimentation basin 5, denitrification of autotrophic organism pond 6,
Third sedimentation basin 11, water pump 12, coagulant dosage pump 13, stirring motor 14, overflow hole I 15, agitating device 16, stirring
Paddle 21, overflow hole II 22, guiding region 23, deflector 24, sludge pipe 25, flow guiding slit 31, heterotrophic denitrification pond up-flow area
32, the area heterotrophic denitrification Chi Jiangliu 33, deflector 34, heating rod 35, sludge reflux stitch 36, fixed bio-carrier 37, stir
Motor 38, agitating device 39, agitating paddle 310, effluent recycling water inlet pipe 311, heterotrophic denitrification pond combined type is mixed to examine online
Survey instrument 41, overflow hole III 42, sludge pipe 51, denitrification of autotrophic organism pond up-flow area 52, the area denitrification of autotrophic organism Chi Jiangliu
53, suspended biological carrier 54, deflector 55, aerator 56, sludge gravity flow area 57, denitrification of autotrophic organism pond combined type exist
Line detector 58, PLC controller 59, air blower 61, suspended biological carrier device for trapping 62, outlet pipe 63, effluent recycling
Pipe 64, sludge pipe 65, effluent recycling pump
Specific embodiment
It is illustrated in conjunction with novel height nitrogenous low carbon-nitrogen ratio sewage processing unit of the attached drawing to the utility model.
As shown in Figure 1, the nitrogenous low carbon-nitrogen ratio sewage processing unit structure of novel height of the utility model is by sequentially connecting
Coagulating basin 1, the first sedimentation basin 2, heterotrophic denitrification pond 3, the second sedimentation basin 4, denitrification of autotrophic organism pond 5 and third sedimentation basin 6
Composition.
The water inlet of the coagulating basin 1 is connect by pipeline with water pump 11, and the coagulant water inlet of coagulating basin 1 passes through pipeline
It is connect with coagulant dosage pump 12, coagulating basin 1 is connected by 22 overflow of guiding region of the overflow hole 14 I and the first sedimentation basin 2 on top
It connects；The bottom of coagulating basin 1 is equipped with agitating device 16 and is connect by agitating paddle 15 with the stirring motor 13 on 1 top of coagulating basin.
The guiding region 22 of first sedimentation basin 2 is connect by overflow hole I 14 with coagulating basin 1, the water conservancy diversion of the first sedimentation basin 2
23 lower part of plate is equipped with flow guiding slit 25 and is connected to with the lower part settling zone of the first sedimentation basin 2, and the first sedimentation basin 2 passes through top later
Overflow hole 21 II connect with the heterotrophic denitrification pond up-flow area 31 in heterotrophic denitrification pond 3；First sedimentation basin, 2 bottom is equipped with spoil disposal
Pipe 24.
It is equipped with deflector 27 in the inside in the heterotrophic denitrification pond 3,27 side of deflector is heterotrophic denitrification pond up-flow
Area 24, the other side are the area heterotrophic denitrification Chi Jiangliu 25, and the heterotrophic nitrification pond up-flow area 24 is connect by pipeline with intake pump,
25 lower part of the area the heterotrophic denitrification Chi Jiangliu is equipped with sludge reflux seam 28 and connect with the first sedimentation basin 3；In heterotrophic denitrification
Filled with fixed bio-carrier 36 in pond 2；Heating rod 34 is located at 31 liquid level of heterotrophic denitrification pond up-flow area or less and controls with PLC
Device 58 processed connects；Heterotrophic denitrification pond 3 be additionally provided with heterotrophic denitrification pond combined type on-line detector 311 and with PLC controller 58
Connection, PLC controller 58 are online with the denitrification of autotrophic organism pond combined type that is located in denitrification of autotrophic organism pond 5 respectively by pipeline
65 connection of detector 57, air blower 59 and effluent recycling pump, air blower 59 are connect by pipeline with aerator 55；Heterotrophism is anti-
The recycling effluent water inlet 310 of nitrification tank 32 is connect by pipeline with effluent recycling pump 65.
The up-flow area 31 in the heterotrophic denitrification pond 3 is connect by overflow hole 21 II with the first sedimentation basin 2, heterotrophic denitrification
Deflector 33 is equipped with inside pond 3,33 side of deflector is heterotrophic denitrification pond up-flow area 31, and the other side is heterotrophic denitrification pond drop
Flow area 32, sludge reflux that the lower part in the area heterotrophic denitrification Chi Jiangliu 32 in the heterotrophic denitrification pond 3 is equipped with seam 35 and with the
The connection of two sedimentation basins 4；Fixed bio-carrier 36 is added in heterotrophic denitrification pond 3；Heating rod 34 is located at heterotrophic denitrification pond up-flow
It is connect below 31 liquid level of area and with PLC controller 58；Heterotrophic denitrification pond 3 is additionally provided with heterotrophic denitrification pond combined type on-line checking
Instrument 311 is simultaneously connect with PLC controller 58, PLC controller 58 by pipeline respectively be located in denitrification of autotrophic organism pond 5 from
Health object denitrification tank combined type on-line detector 57, air blower 59 and effluent recycling pump 65 connection, air blower 59 by pipeline with
Aerator 55 connects；The recycling effluent water inlet 310 in heterotrophic denitrification pond 3 is connect by pipeline with effluent recycling pump 65；It is different
3 bottom of denitrification pond is supported to be additionally provided with agitating device 38 and connect by agitating paddle 39 with stirring motor 37.
Second sedimentation basin 4 is connect by sludge reflux seam 35 with heterotrophic denitrification pond 3, and the second sedimentation basin 4 is logical later
The overflow hole 41 III for crossing top is connect with the denitrification of autotrophic organism pond up-flow area 51 in denitrification of autotrophic organism pond 5, and in the second precipitating
The bottom in pond 4 is equipped with sludge pipe 42.
The denitrification of autotrophic organism pond 5 is connect by the overflow hole 41 III on 4 top of the second sedimentation basin with the second sedimentation basin 4,
Deflector 54 is equipped with inside denitrification of autotrophic organism pond 5,54 side of deflector is denitrification of autotrophic organism pond up-flow area 51, and the other side is
The area denitrification of autotrophic organism Chi Jiangliu 52,5 lower part of denitrification of autotrophic organism pond are equipped with sludge gravity flow area 56 and connect with third sedimentation basin 6
It connects；It is added with suspended biological carrier 53 in denitrification of autotrophic organism pond 5, is equipped between denitrification of autotrophic organism pond 5 and third sedimentation basin 6
Suspended biological carrier device for trapping 61；While denitrification of autotrophic organism pond 5 is additionally provided with aerator 55 and passes through pipeline and air blower 59
Connection, air blower 59 are connect with PLC controller 58；It is online that denitrification of autotrophic organism pond 5 is additionally provided with denitrification of autotrophic organism pond combined type
Detector 57 is simultaneously connect with PLC controller 58, PLC controller 58 by pipeline respectively be located at it is different in heterotrophic denitrification pond 3
Support 65 connection of denitrification pond combined type on-line detector 311, air blower 59 and effluent recycling pump.
The third sedimentation basin 6 is connect by sludge gravity flow area 56 with denitrification of autotrophic organism pond 5, later third sedimentation basin 6
Water outlet be discharged by the outlet pipe 62 on top；The water outlet of third sedimentation basin 6 is divided into two-way: being discharged all the way by outlet pipe 62；One
Road connects effluent recycling pump 65 by effluent recycling pipe 63, and effluent recycling pump 65 is connect by pipeline with heterotrophic denitrification pond 3,
Effluent recycling pump 65 is connect with PLC controller 58 simultaneously.
Mixed liquor in the heterotrophic denitrification pond 3 can flow up under the action of agitating device 38 from heterotrophic denitrification pond
The bottom in area 31 rises to 31 top of heterotrophic denitrification pond up-flow area, is entered by 33 top overflow of deflector from heterotrophic denitrification
The area Chi Jiangliu 32 flows down to 32 lower part of the area heterotrophic denitrification Chi Jiangliu from 32 top of the area heterotrophic denitrification Chi Jiangliu later,
It is reentered in heterotrophic denitrification pond up-flow area 31 from the lower part of deflector 33 later, thus circulation in realizing.
Mixed liquor and suspended biological carrier 53 in the denitrification of autotrophic organism pond 5 discharge gas in aerator 55
51 top of denitrification of autotrophic organism pond up-flow area can be risen under effect of increasing from the bottom in denitrification of autotrophic organism pond up-flow area 51, is led to
It crosses 54 top overflow of deflector and enters the area denitrification of autotrophic organism Chi Jiangliu 52, it is downward from 52 tops of the area denitrification of autotrophic organism Chi Jiangliu
Flow to 52 lower part of the area denitrification of autotrophic organism Chi Jiangliu sludge gravity flow area 56, later by sludge flow automatically area 56 mixed liquor with
Suspended biological carrier 53 re-enters into denitrification of autotrophic organism pond up-flow area 51, thus circulation in realizing.
The PLC controller 58 is the expansible PLC controller of GCAN-PLC-400 type, is equipped with early warning in PLC controller 58
Module and data analysis module.
The fixed bio-carrier 36 is suspension ball-type carrier, and carrier dimensions are that diameter is 1-10cm, and carrier passes through rope yarn
It is fixed in heterotrophic denitrification pond 3, adds the 10%-30% that rate is volume ratio.
Be modified Raschig ring carrier in the suspended biological carrier 53, the modification Raschig ring carrier dimensions be diameter × height ×
Wall thickness=D × H × W=1-10cm × 1-10cm × 2-5mm, suspended biological carrier 53 add the 10%-30% that rate is volume ratio.
Illustrate realization process by novel height nitrogenous low carbon-nitrogen ratio sewage processing unit of the embodiment to the utility model:
Embodiment one
Process object: sludge liquor, the ammonia nitrogen concentration in the sewage are 900mg/L, and COD concentration is 619 mg/L, are hanged
Floating object concentration is 1000mg/L, pH=7-8.
(1) suspended matter and partial organic substances in coagulating sedimentation removal sewage
Sludge liquor from intake pump 11 and the coagulant from coagulant dosage pump 12 enter coagulating basin 1, coagulation
Agent is aluminium polychloride, and aluminium polychloride dosage is 100-200mg/L, and hydraulic detention time of the sewage in coagulating basin 1 is
0.5-2h enters the first sedimentation basin 2 from 1 top overflow hole 14 of coagulating basin containing the sewage for taking off steady suspended matter later, and sewage is first
Hydraulic detention time in sedimentation basin 2 is maintained at 3-6h, and supernatant enters heterotrophic denitrification pond 3, precipitating sludge from overflow hole 21
It is discharged from bottom sludge pipe 24.By precipitating, 90% or more suspended matter in raw water is removed, and insoluble COD about may be used
It is removed 200mg/L.Aqueous suspension drops to 100mg/L hereinafter, COD is about 400-420mg/L out.
(2) organic matter in the nitrate nitrogen and water inlet in heterotrophic denitrification removal denitrification of autotrophic organism pond recycling effluent
The water outlet of first sedimentation basin 2 is from the heterotrophic denitrification pond up-flow area 31 that overflow hole 21 enters heterotrophic denitrification pond 3
Portion adds fixed bio-carrier 36 in heterotrophic denitrification pond 3, and fixed bio-carrier 36 selects suspension ball-type carrier, and carrier is logical
It crosses rope yarn series connection to fix, Carrier diameters 3cm, the rate that adds of carrier is the 30% of volume ratio, and sewage is mentioned agitating device 37
Enter the area heterotrophic denitrification Chi Jiangliu 32 from 33 top of deflector under rising, heterotrophic denitrifying Bacteria on fixed bio-carrier 36 and different
The heterotrophic denitrifying Bacteria for supporting floc sludge in denitrification pond 3 will be in 6 recycling effluent of third sedimentation basin using the organic matter in water inlet
Nitrate nitrogen generate nitrogen, by adding fixed bio-carrier 36, guarantee that the sludge concentration in heterotrophic denitrification pond 3 exists
10000mg/L or more.Pass through PLC controller 58, the connection of heating rod 34 and denitrification of autotrophic organism pond combined type on-line detector 57
The temperature in control control heterotrophic denitrification pond 3 at 30-35 DEG C, hydraulic detention time of the sewage in heterotrophic denitrification pond 3 in 3-6h,
Sewage of the heterotrophic denitrification pond 3 containing nitrate nitrogen will be back to by the joint control of PLC controller 58 and effluent recycling pump 65 simultaneously
Reflux ratio is controlled 800%.It is handled by heterotrophic denitrification, the COD removal of 363mg/L can be achieved in heterotrophic denitrification pond 3,
Nitrate nitrogen can remove 87%.Promotion of the mixed liquor a part of 32 lower part of the area heterotrophic denitrification Chi Jiangliu in agitating device 37
Under be recycled into heterotrophic denitrification pond up-flow area 31, another part is sunk by sludge reflux seam 35 into the second sedimentation basins 4
It forms sediment.
The separation of solid and liquid of (3) second sedimentation basins
The effect of second sedimentation basin 4 is separated by solid-liquid separation to the water mixed liquid that goes out in heterotrophic denitrification pond 3, and mixed liquor passes through
Sludge reflux seam 35 enters the second sedimentation basins 4, mixed liquor the second sedimentation basin 4 hydraulic detention time in 3-6h, make in gravity
It is separated by solid-liquid separation with lower completion, water outlet concentration of suspension drops to 30mg/L hereinafter, precipitating sludge is voluntarily slided by sludge reflux seam 35
Enter heterotrophic denitrification pond 3, excess sludge is discharged from sludge pipe 42 as needed, and supernatant enters autotroph by overflow hole 41
Denitrification tank 5.
(4) ammonia nitrogen in denitrification of autotrophic organism removal sewage
Sewage enters denitrification of autotrophic organism pond 5 from the overflow hole 41 of the second sedimentation basin 4, throws in denitrification of autotrophic organism pond 5
Add suspended biological carrier 53, suspended biological carrier 53 is using modified Raschig ring carrier, having a size of diameter × height × wall thickness=D × H
× W=1cm × 1cm × 2mm adds 30% that rate is volume ratio, can provide one using modified Raschig ring carrier for microorganism
A space parallax, so that the autotrophic denitrification microorganism to different function provides respectively suitable ecological niche respectively: short distance nitration bacterium exists
The aerobic zone of the outside of carrier is grown, anoxic zone growth of the anaerobic ammonia oxidizing bacteria inside carrier；In external short distance nitration bacterium
Using the dissolved oxygen in water body about 50% ammonium oxidation in water inlet at nitrite nitrogen, later in the anaerobism of carrier inside
The nitrite nitrogen and remaining ammonia nitrogen that ammonia oxidation bacteria is generated using short distance nitration bacterium carry out effect and generate nitrogen, thus sewage
In ammonia nitrogen removal.Suspended biological carrier device for trapping is set between denitrification of autotrophic organism pond 5 and third sedimentation basin 6 simultaneously
61, suspended biological carrier device for trapping 61 uses reticular structure, and material is using macromolecules such as nontoxic polyethylene difficult to degrade
Material, the size of reticular structure are 6mm.Quickly denitrification of autotrophic organism sludge can be carried out by suspended biological carrier 53
Enrichment, while the suspended biological carrier 53 in denitrification of autotrophic organism pond 5 is trapped in by suspended biological carrier device for trapping 61
Suspended biological carrier 53 is prevented to flow out in reactor with water outlet.It is carried by adding the suspended biological carrier 53 and suspended biological
Body device for trapping 61 can be enriched with denitrification of autotrophic organism sludge in 3-5 months, while guarantee dirty in denitrification of autotrophic organism pond 5
Mud concentration is in 10 000mg/L or more.
After sewage is from the overflow hole 41 of the second sedimentation basin 4 into denitrification of autotrophic organism pond 5, in denitrification of autotrophic organism pond 5
By circular treatment: air is squeezed by aerator 55 by 51 bottom of denitrification of autotrophic organism pond up-flow area using air blower 59, it will
Mixed liquor and suspended biological carrier 53, which are promoted, arrives 51 top of denitrification of autotrophic organism pond up-flow area, mixed liquor and suspended biological carrier 53
Enter the area denitrification of autotrophic organism Chi Jiangliu 52 by 54 top of deflector, later suspended biological carrier 53 and a part of mixed liquor warp
The sludge gravity flow area 56 for crossing 52 bottom of the area denitrification of autotrophic organism Chi Jiangliu reenters 51 lower part of denitrification of autotrophic organism pond up-flow area
It is recycled；The removal efficiency that ammonia nitrogen is improved by interior circulation, can be achieved the ammonia of 894mg/L in denitrification of autotrophic organism pond 5
Nitrogen removal, removal rate reach 99%.In denitrification of autotrophic organism pond 5, while passing through PLC controller 58, heating rod 34 and autotrophy
The temperature in the joint control control denitrification of autotrophic organism pond 5 of biological denitrificaion pond combined type on-line detector 57 is at 30-35 DEG C, and pH is in 7-
8, the dense control of free ammonia is controlled in 1-20mg/L and free nitrous acid concentration in 5-15 μ g/L, while passing through PLC controller 58, drum
The joint control of blower 59 and denitrification of autotrophic organism pond combined type on-line detector 57 exists the dissolved oxygen control in denitrification of autotrophic organism pond 5
0.5mg/L or less.Controlling hydraulic detention time of the sewage in denitrification of autotrophic organism pond 5 is 3-8h, at this time denitrification of autotrophic organism
The nitrogen volume elimination capacity rate in pond 5 is up to 2.7-7.2kg/ (m3·d).Mixed liquor in denitrification of autotrophic organism pond 5 passes through suspension
Bio-carrier device for trapping 61 enters third sedimentation basin 6.
(5) third sedimentation basin removes oil removal
Mixed liquor in denitrification of autotrophic organism pond 5 enters third sedimentation basin 6 by suspended biological carrier device for trapping 61 and sinks
It forms sediment, hydraulic detention time of the mixed liquor in third sedimentation basin 6 is discharged concentration of suspension and reaches 20mg/L, precipitating is dirty in 3-6h
Mud enters denitrification of autotrophic organism pond 5 from sludge gravity flow area 56, and water outlet is discharged from 62 a part of outlet pipe；A part passes through water outlet
Reflux pump 65 flows back into heterotrophic denitrification pond 3.
(6) sewage between coagulating basin 1 and the first sedimentation basin 2, between the first sedimentation basin 2 and heterotrophic denitrification pond 3,
Flowed between two sedimentation basins 4 and denitrification of autotrophic organism pond 5 by overflow type, heterotrophic denitrification pond 3 and the second sedimentation basin 4, from
Health object denitrification tank 5 and third sedimentation basin 6 are all made of Round Sump, save sludge reflux pump and pipeline, reduce hydraulic loss, from
And reduce the operating cost of 20%-30%.
(6) method that the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height carries out parameter adjustment
In the novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height, pass through heterotrophic denitrification pond combined type on-line checking
Instrument 311 detects temperature, nitrate nitrogen concentration, pH and the ammonia nitrogen concentration parameter in heterotrophic denitrification pond 3；Pass through denitrification of autotrophic organism
Pond combined type on-line detector 57 detect denitrification of autotrophic organism pond 5 in temperature, dissolved oxygen concentration, nitrate nitrogen concentration, pH and
Ammonia nitrogen concentration parameter, data analysis module in PLC controller 58 is to coming from denitrification of autotrophic organism pond combined type on-line detector
57 and the data of heterotrophic denitrification pond combined type on-line detector 212 analyzed, to analyze the trip in denitrification of autotrophic organism pond 5
The change of concentration at any time from free ammonia and free nitrous acid in the concentration of ammonia and free nitrous acid, denitrification of autotrophic organism pond 5
The parameters such as the ratio of nitrate nitrogen concentration and influent ammonium concentration in rate, denitrification of autotrophic organism pond 5, these parameters by with
The standard parameter of the setting in data analysis module in PLC controller 58 is compared, when these parameters are above standard parameter
When, the warning module in PLC controller 58 gives a warning, and is adjusted according to the following steps to denitrification of autotrophic organism pond 5:
1) in the denitrification of autotrophic organism pond 5, when the temperature in denitrification of autotrophic organism pond 5 is lower than 30 DEG C, PLC control
Device 58 processed issues warning signal, and PLC controller 58 is heated by the control closure of heating rod 34, when temperature rises to 30-35
DEG C when, PLC controller 58 by control heating rod 34 disconnection stop heating maintaining the temperature at 30-35 DEG C；When temperature is higher than 35
DEG C when, PLC controller 58 issues warning signal, PLC controller 58 by control heating rod 34 disconnection so that temperature is dropped to 30-35
℃；
2) in the denitrification of autotrophic organism pond 5, when in denitrification of autotrophic organism pond 5 free ammonia and free nitrous acid it is dense
Spending control threshold range is respectively 15-25mg/L and 15-20 μ g/L, and PLC controller 58 issues warning signal, and adjusts autotrophy at this time
PH in the water inlet of biological denitrificaion pond 5, in 450mg/L, guarantees the free ammonia in denitrification of autotrophic organism pond 5 in 7-8 and ammonia nitrogen concentration
With free nitrous acid concentration respectively in 1-25mg/L and 5-20 μ g/L；
3) in the denitrification of autotrophic organism pond 5, when in denitrification of autotrophic organism pond 5 free ammonia and free nitrous acid it is dense
Degree is controlled respectively in 1-25mg/L and 5-20 μ g/L, when the concentration of free nitrous acid changes with time rate greater than 20 μ g/
(Ld) when or the concentration of free ammonia changes with time rate greater than 25mg/ (Ld), and PLC controller 58 issues early warning letter
Number, the pH in the water inlet of denitrification of autotrophic organism pond 5 is adjusted at this time in 7-8 and ammonia nitrogen concentration in 450mg/L, guarantees that autotroph is de-
Free ammonia and free nitrous acid concentration in nitrogen pond 5 are respectively in 1-25mg/L and 5-20 μ g/L；
4) in the denitrification of autotrophic organism pond 5, when in denitrification of autotrophic organism pond 5 nitrate nitrogen concentration and autotroph
When the ratio of ammonia nitrogen concentration in the water inlet of denitrification tank 5 is greater than 0.15, PLC controller 58 is issued warning signal, and regulates and controls air blast at this time
Machine 59 reduces ventilation quantity, so as to adjust the dissolved oxygen concentration in denitrification of autotrophic organism pond 5 in 0.5mg/L or so, to guarantee certainly
The ratio of nitrate nitrogen concentration and influent ammonium concentration in health object denitrification tank 5 maintains between 0.1-0.15.
By the early warning and regulation of the above parameter, to realize the real-time control and early warning to denitrification of autotrophic organism pond 5, protect
Demonstrate,prove the efficient operation steady in a long-term in denitrification of autotrophic organism pond 5.
Embodiment two
Process object: synthesizing ammonia comprehensive wastewater, and the ammonia nitrogen concentration in the sewage is 500-600mg/L, and COD concentration is
200-400mg/L, concentration of suspension 300-400mg/L, pH=7-8.
Ammonia comprehensive wastewater is synthesized after this method is handled, dependent processing unit is to sludge liquor major pollutants
" ammonia synthesizing industry pollution discharge standard " (GB 13458- can be met by cutting down situation such as suspended matter, COD, ammonia nitrogen, total nitrogen
2013) direct emission standard in.
Claims (6)
1. a kind of novel nitrogenous low carbon-nitrogen ratio sewage processing unit of height, which includes the coagulating basin (1) sequentially connected, first sinks
Shallow lake pond (2), heterotrophic denitrification pond (3), the second sedimentation basin (4), denitrification of autotrophic organism pond (5) and third sedimentation basin (6)；
The water inlet of the coagulating basin (1) is connect by pipeline with water pump (11), and the coagulant water inlet of coagulating basin (1) passes through pipe
Road is connect with coagulant dosage pump (12), and coagulating basin (1) passes through the overflow hole I (14) on top and the water conservancy diversion of the first sedimentation basin (2)
Area's (22) overflow connection；The bottom of coagulating basin (1) is equipped with agitating device (16) and by agitating paddle (15) and coagulating basin (1) top
Stirring motor (13) connection；
The guiding region (22) of first sedimentation basin (2) is connect by overflow hole I (14) with coagulating basin (1), the first sedimentation basin (2)
Deflector (23) lower part be equipped with and flow guiding slit (25) and be connected to the lower part settling zone of the first sedimentation basin (2), first precipitate later
Pond (2) is connect by the overflow hole II (21) on top with the heterotrophic denitrification pond up-flow area (31) of heterotrophic denitrification pond (3)；First
Sedimentation basin (2) bottom is equipped with sludge pipe (24)；
The heterotrophic denitrification pond up-flow area (31) of the heterotrophic denitrification pond (3) passes through overflow hole II (21) and the first sedimentation basin
(2) it connects, the inside of heterotrophic denitrification pond (3) is equipped with deflector (33), and deflector (33) side is heterotrophic denitrification pond up-flow
Area (31), the other side are the area heterotrophic denitrification Chi Jiangliu (32), the area heterotrophic denitrification Chi Jiangliu of the heterotrophic denitrification pond (3)
(32) lower part is equipped with sludge reflux seam (35) and connect with the second sedimentation basin (4)；The fixed life of addition in heterotrophic denitrification pond (3)
Object carrier (36), heating rod (34) are located at heterotrophic denitrification pond up-flow area (31) liquid level or less and connect with PLC controller (58)；
Heterotrophic denitrification pond (3) is additionally provided with heterotrophic denitrification pond combined type on-line detector (311) and connect with PLC controller (58),
PLC controller (58) is online with the denitrification of autotrophic organism pond combined type that is located in denitrification of autotrophic organism pond (5) respectively by pipeline
Detector (57), air blower (59) and effluent recycling pump (65) connection, air blower (59) are connected by pipeline and aerator (55)
It connects；The effluent recycling water inlet pipe (310) in heterotrophic denitrification pond (3) is connect by pipeline with effluent recycling pump (65)；The anti-nitre of heterotrophism
Change pond (3) bottom to be additionally provided with agitating device (38) and connect by agitating paddle (39) with stirring motor (37)；
Second sedimentation basin (4) is connect by sludge reflux seam (35) with heterotrophic denitrification pond (3), later the second sedimentation basin
(4) it is connect by the overflow hole III (41) on top with the denitrification of autotrophic organism pond up-flow area (51) of denitrification of autotrophic organism pond (5), and
Sludge pipe (42) are equipped in the bottom of the second sedimentation basin (4)；
The denitrification of autotrophic organism pond (5) is connected by the overflow hole III (41) on the second sedimentation basin (4) top and the second sedimentation basin (4)
It connects, is equipped with deflector (54) inside denitrification of autotrophic organism pond (5), deflector (54) side is denitrification of autotrophic organism pond up-flow area
(51), the other side is the area denitrification of autotrophic organism Chi Jiangliu (52), and denitrification of autotrophic organism pond (5) lower part is equipped with sludge gravity flow area (56)
And it is connect with third sedimentation basin (6)；Suspended biological carrier (53) are added in denitrification of autotrophic organism pond (5), denitrification of autotrophic organism
Suspended biological carrier device for trapping (61) are equipped between pond (5) and third sedimentation basin (6)；Denitrification of autotrophic organism pond (5) is gone back simultaneously
It is connect by pipeline with air blower (59) equipped with aerator (55), air blower (59) is connect with PLC controller (58)；From health
Object denitrification tank (5) is additionally provided with denitrification of autotrophic organism pond combined type on-line detector (57) and connect with PLC controller (58), PLC
Controller (58) by pipeline respectively with the heterotrophic denitrification pond combined type on-line detector that is located in heterotrophic denitrification pond (3)
(311), air blower (59) and effluent recycling pump (65) connection；
The third sedimentation basin (6) is connect by sludge gravity flow area (56) with denitrification of autotrophic organism pond (5), later third sedimentation basin
(6) water outlet is discharged by the outlet pipe (62) on top；Third sedimentation basin (6) water outlet is divided into two-way: passing through outlet pipe all the way
(62) it is discharged；All the way by effluent recycling pipe (63) connect effluent recycling pump (65), effluent recycling pump (65) by pipeline with it is different
Denitrification pond (3) connection is supported, while effluent recycling pump (65) is connect with PLC controller (58).
2. the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height according to claim 1, it is characterized in that: anti-in the heterotrophism
Mixed liquor in nitrification tank (3) can rise under the action of agitating device (38) from the bottom in heterotrophic denitrification pond up-flow area (31)
At the top of to heterotrophic denitrification pond up-flow area (31), entered by deflector (33) top overflow from the area heterotrophic denitrification Chi Jiangliu
(32), the area heterotrophic denitrification Chi Jiangliu (32) lower part is flowed down to from the area heterotrophic denitrification Chi Jiangliu (32) top later, it
It is reentered in heterotrophic denitrification pond up-flow area (31) from the lower part of deflector (33) afterwards, thus circulation in realizing.
3. the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height according to claim 1, it is characterized in that: described from health
Mixed liquor and suspended biological carrier (53) in object denitrification tank (5) can be under the effect of increasing of aerator (55) release gas
The bottom in denitrification of autotrophic organism pond up-flow area (51) rises at the top of denitrification of autotrophic organism pond up-flow area (51), passes through deflector
(54) top overflow enters the area denitrification of autotrophic organism Chi Jiangliu (52), from the area denitrification of autotrophic organism Chi Jiangliu (52) top to flow down
Sludge gravity flow area (56) for moving the area denitrification of autotrophic organism Chi Jiangliu (52) lower part, later by sludge gravity flow area (56) mixing
Liquid and suspended biological carrier (53) re-enter into denitrification of autotrophic organism pond up-flow area (51), thus circulation in realizing.
4. the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height according to claim 1, it is characterized in that: the PLC is controlled
Device (58) is the expansible PLC controller of GCAN-PLC-400 type, and warning module is equipped in PLC controller (58) and data analyze mould
Block.
5. the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height according to claim 1, it is characterized in that: the fixed biology
Carrier (36) is suspension ball-type carrier, and carrier dimensions are that diameter is 1-10cm, and carrier is fixed on heterotrophic denitrification pond by rope yarn
(3) in.
6. the nitrogenous low carbon-nitrogen ratio sewage processing unit of novel height according to claim 1, it is characterized in that: being given birth in the suspension
Object carrier (53) is modified Raschig ring carrier, which is diameter × height × wall thickness=D × H × W=1-
10cm×1-10cm×2-5mm。
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