CN110357257A - One kind being used for urban wastewater treatment firm advanced nitrogen oxidative system and construction method - Google Patents
One kind being used for urban wastewater treatment firm advanced nitrogen oxidative system and construction method Download PDFInfo
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- CN110357257A CN110357257A CN201910774986.0A CN201910774986A CN110357257A CN 110357257 A CN110357257 A CN 110357257A CN 201910774986 A CN201910774986 A CN 201910774986A CN 110357257 A CN110357257 A CN 110357257A
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 75
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 38
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- 230000001590 oxidative effect Effects 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 title claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 194
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 238000006243 chemical reaction Methods 0.000 claims abstract description 49
- 239000007789 gas Substances 0.000 claims abstract description 42
- 239000000945 filler Substances 0.000 claims abstract description 18
- 239000010865 sewage Substances 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 239000002351 wastewater Substances 0.000 claims abstract description 9
- 241000894006 Bacteria Species 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 230000003647 oxidation Effects 0.000 claims description 11
- 238000007254 oxidation reaction Methods 0.000 claims description 11
- 239000005416 organic matter Substances 0.000 claims description 10
- 244000005700 microbiome Species 0.000 claims description 9
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- 230000002906 microbiologic effect Effects 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 108020004465 16S ribosomal RNA Proteins 0.000 claims description 3
- 239000006004 Quartz sand Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 239000000112 cooling gas Substances 0.000 claims description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000029087 digestion Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 101100162202 Aspergillus parasiticus (strain ATCC 56775 / NRRL 5862 / SRRC 143 / SU-1) aflF gene Proteins 0.000 description 1
- NLOAOXIUYAGBGO-UHFFFAOYSA-N C.[O] Chemical compound C.[O] NLOAOXIUYAGBGO-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- 230000005526 G1 to G0 transition Effects 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 125000002791 glucosyl group Chemical group C1([C@H](O)[C@@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 239000010797 grey water Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000010534 mechanism of action Effects 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 101150004639 nirK gene Proteins 0.000 description 1
- 101150027124 nirS gene Proteins 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- 101150076456 norB gene Proteins 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (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 provides a kind of for urban wastewater treatment firm advanced nitrogen oxidative system and construction method, the system is made of biofilm reactor, disengaging gas system, inlet and outlet system and four major part of hot water cyclesystem, device is divided into continous way operation and periodic running mode, and the reaction unit main body is connect with disengaging gas system, inlet and outlet system and hot water cyclesystem respectively；Reaction unit main body is that closed internal layer cylinder and outer layer barrel are constituted, and filler and bed course are filled in internal layer cylinder, is equipped with aerating system in the bottom of internal layer cylinder.The present invention constructs denitrification type methane oxidative system using the methane that anaerobic waste water pond or anaerobic sludge digestion generate, the nitrogen concentration in urban wastewater treatment firm water outlet can be effectively reduced, reduce sewage treatment plant's advanced treating operating cost, realize the resource utilization to methane, reduce the discharge of methane, slow down greenhouse effects caused by discharge of methane, there is significant economy and environmental benefit.
Description
Technical field
The present invention relates to one kind to be used for urban wastewater treatment firm advanced nitrogen oxidative system and construction method, belongs at sewage
Manage technical field.
Background technique
Town domestic sewage still contains a large amount of nitrogen pollutants, mistake after traditional waste water treatment process is handled in water outlet
The discharge for measuring nitrogen can cause water eutrophication, destroy ecological environment.Due to traditional handicraft treated water outlet C/N it is relatively low,
Carbon source needed for not being able to satisfy denitrification denitrogenation, therefore, conventional advanced nitrogen processing technique is by the way of additional carbon, often
Carbon source is glucose, methanol, sodium acetate, ethyl alcohol etc., and the mode of additional carbon leads to processing cost increase, economic benefit
The problems such as difference, the wasting of resources, is easy to happen the phenomenon that carbon source adds inaccuracy in the case where influent quality fluctuation, influences to be discharged
Water quality.
Methane is simplest organic matter, and stable structure is wide in distributed in nature, is biogas, casing-head gas, natural gas and coal
The main component of pit road gas.Wherein, in biogas ingredient have 50%~80% methane, result from marshland, septic tank, lake
Bed mud and anaerobic waste water pond etc. are to be realized by the microbiological anaerobic digestion of organic matter, belong to secondary energy sources, renewable energy.
Methane-oxidizing bacteria can be distributed widely in natural environment using methane as unique carbon source and energy substance as lived
Garbage sanitary filling field, peat bog, coal mine, sludge of sewage treatment plant, soil, reservoir and river deposit and absmal deposit
Object etc. plays an important role in carbon cycle, nitrogen cycle and oxygen cycle.Correlative study discovery, methane-oxidizing bacteria is in oxidation methane
It is able to achieve the removal of nitrogen simultaneously, which is divided into denitrification type methane aerobic oxidation (AME-D) and denitrification type methane anaerobism oxygen
Change (ANME-D).Denitrification type methane aerobic oxidation (AME-D) and the equal energy of denitrification type methane anaerobic oxidized (ANME-D) process
Effectively realize the removal of nitrogen, but denitrification type methane aerobic oxidation (AME-D) process needs the participation of oxygen.About denitrification type first
There are two kinds of explanations for the mechanism of action of alkane aerobic oxidation process (AME-D): 1. denitrification process is realized by aerobic methane-oxidizing bacteria,
Correlative study is found, denitrogenation gene nirS, nirK and norB etc. are contained in the gene of portion of methane oxidation bacteria；2. denitrification process
By aerobic methane-oxidizing bacteria and denitrifying bacteria cooperative achievement, methane-oxidizing bacteria oxidation methane can generate intermediate product, as methanol,
Formaldehyde, acetate and citrate etc., generated intermediate product provide carbon source for denitrifying bacteria.
Therefore, the methane building denitrification type methane oxidation system how generated using anaerobic waste water pond or anaerobic sludge digestion
System reduces sewage treatment plant's advanced treating operating cost, realizes to first to reduce the nitrogen concentration in urban wastewater treatment firm water outlet
The problems such as resource utilization of alkane reduces the discharge of methane, slows down greenhouse effects caused by discharge of methane is current sewage treatment
Technical problem urgently to be resolved.
Summary of the invention
The present invention is high for total nitrogen (TN) concentration in urban wastewater treatment firm tail water, in the advanced treatment process now used,
It need to additionally add the carbon sources such as methanol, sodium acetate, the problems such as processing cost height, deficiency in economic performance, the wasting of resources, is prominent, simultaneously because
Anaerobism section in sewage and sludge handling process generates a large amount of methane gas, and direct emission environment causes greenhouse effects, to environment
The problems such as polluting, the present invention provide one kind and are used for urban wastewater treatment firm advanced nitrogen oxidative system and construction method, with
Overcome deficiency in the prior art.
Technical solution of the present invention: one kind being used for urban wastewater treatment firm advanced nitrogen oxidative system, including reaction unit
Main body, disengaging gas system, inlet and outlet system and hot water cyclesystem four are most of, the reaction unit main body respectively with disengaging gas
System, inlet and outlet system are connected with hot water cyclesystem；Reaction unit main body is that closed internal layer cylinder and outer layer barrel are constituted,
It is filled with filler and bed course in internal layer cylinder, aerating system is installed in the bottom of internal layer cylinder；The disengaging gas system packet
The air inlet pipe connecting with reaction unit bottom part body is included, methane on-line computing model is installed in air inlet pipe, it is upper in air inlet pipe
It is parallel with methane air inlet pipe and air intake duct in the inlet end of methane on-line computing model, in methane air inlet pipe extremely by inlet end
Outlet side is connected with methane air intake pump, methane gas flowmeter and valve in turn, at air intake duct upper air end to outlet
End is connected with air inlet pump, air gas flowmeter and valve in turn；The inlet and outlet system includes being connected to instead
The water inlet pipe or outlet pipe for answering apparatus main body bottom and top, are connected in turn by water inlet end to water outlet into water on water inlet pipe
Case, intake pump and valve, are equipped with valve on outlet pipe；The hot water cyclesystem include in reaction unit main body in
The hot water inlet pipe and hot water outlet pipe of cavity connection between layer cylinder and outer layer cylinder, hot water inlet pipe and hot water outlet pipe's
The other end is connect with constant temperature water tank, valve is mounted on hot water inlet pipe and hot water outlet pipe, on hot water inlet pipe
Hot water circulating pump is installed at the water inlet end, is connected with escape pipe at the top of reaction unit main body, on escape pipe by into
Gas end to outlet side is sequentially installed with valve and methane on-line computing model.
Further, gas is sequentially installed between methane on-line computing model and reaction unit main body in the air inlet pipe
Check valve and valve.
Further, the filler is quartz sand, and partial size is 2~4mm；The bed course is cobble, and partial size is 8~16mm.
Further, sewage treatment plant tail water is loaded in the inlet tank.
Meanwhile the present invention also provides a kind of based on the above-mentioned building for urban wastewater treatment firm advanced nitrogen oxidative system
Method, comprising the following steps:
Step 1: being sealed after seed sludge and waste water is added into reaction unit main body, then starting disengaging gas system,
So that an air inlet in reaction unit main body is not intake, carries out 3 days microorganism colonizations；
Step 2: after the biofilm stage, while starting disengaging gas system, inlet and outlet system and hot water cyclesystem, make
Normal air inlet, water inlet in reaction unit main body, and mixed gas is controlled by methane gas flowmeter and air gas flowmeter
Middle methane concentration makes methane concentration 1%~4% in mixed gas, while controlling reaction unit by hot water cyclesystem
Reaction temperature is 25~30 DEG C；
Step 3: the concentration of methane in air inlet pipe and an air outlet pipe is monitored by methane on-line computing model, observes air inlet in real time
The variation of methane concentration in pipe and escape pipe, it is dense every pH, DO, temperature, ammonia nitrogen, sub- nitrogen, nitrate nitrogen and COD in 1d detection Inlet and outlet water
The physical and chemical indexes such as degree, removal situation of the analysis system to total nitrogen；
Step 4: after operation a period of time, the concentration of methane in air inlet pipe and an air outlet pipe is compared, computing system is to methane
Consumption, and the nitric efficiency of analysis system adjust the concentration of methane in air inlet pipe according to the actual situation；
Step 5: after system run all right, the growing state of filler surface microorganism in observing response apparatus main body, analysis
The form of microorganism in filler surface, and microbiological paper method is analyzed using 16S rRNA high-flux sequence, it identifies main
Aerobic methane-oxidizing bacteria and denitrifying bacteria make filler surface be enriched with out aerobic methane-oxidizing bacteria, can pass through aerobic first in this way
Alkoxide bacterium aoxidizes methane and generates organic matter, and the organic matter of generation, will be in tail water as carbon source needed for denitrifying bacterium denitrogenation
Nitrate nitrogen is converted into nitrogen, reaches denitrogenation purpose.
In the above method, when system uses continuously-running duty, water inlet pipe is connected to the bottom of reaction unit main body,
Outlet pipe is connected to the top for answering apparatus main body, and hydraulic detention time range be 12~for 24 hours；When system uses intermittent duty
When mode, water inlet pipe is connected to the top of reaction unit main body, outlet pipe is connected to the bottom for answering apparatus main body, operation week
Phase is " water inlet 0.5h+ reaction 12~for 24 hours+water outlet 0.5h ", compares the denitrification effect of continuously-running duty and intermittent duty mode,
The mode operating system for selecting denitrogenation optimal.
Due to the adoption of the above technical scheme, the present invention has the advantages that
(1) the reaction unit occupied area constructed is small, and simple and easy, at low cost, parameter is easy to control；
(2) methane concentration is low in air inlet, and the methane and air that graywater anaerobic pond or anaerobic sludge digestion generate are mixed
It closes and obtains, reduce sewage treatment plant's advanced treating operating cost, and realize to the resource utilization of methane, reduce the row of methane
It puts, slows down greenhouse effects caused by discharge of methane, there is significant economy and environmental benefit, application prospect is wide；
(3) filler surface forms the biofilm system of aerobic, anoxic and anaerobism in reaction unit, aerobic by what is be enriched with out
Methane-oxidizing bacteria aoxidizes methane and generates organic matter, provides carbon source for denitrifying bacterium denitrogenation；
(4) the denitrification type methane aerobic oxidation system (AME-D) constructed can make full use of the methane blended of low concentration
Gas realizes the efficient removal of total nitrogen in town sewage tail water.
Therefore, the methane building denitrification type methane that the present invention is generated using anaerobic waste water pond or anaerobic sludge digestion aoxidizes
The nitrogen concentration in urban wastewater treatment firm water outlet can be effectively reduced in system, reduce sewage treatment plant's advanced treating operating cost, real
Now to the resource utilization of methane, the discharge of methane is reduced, slows down greenhouse effects caused by discharge of methane, is had significant economical
And environmental benefit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram when present invention uses continuously-running duty；
Fig. 2 is the structural schematic diagram when present invention uses intermittent duty mode；
Fig. 3 is pollutant and nitrogen removal rate effect picture during the present invention is stablized using intermittent duty mode.
Specific embodiment
In order to keep the object of the invention, technical solution and advantage clearer, with reference to the accompanying drawings and examples to the present invention
It is described in further detail.
The embodiment of the present invention: the structural representation for urban wastewater treatment firm advanced nitrogen oxidative system and construction method
Figure is as shown in Figures 1 and 2, including reaction unit main body 1, disengaging gas system, inlet and outlet system and the big portion of hot water cyclesystem four
Point, the reaction unit main body 1 is connect with disengaging gas system, inlet and outlet system and hot water cyclesystem respectively；Reaction unit master
Body 1 is that closed internal layer cylinder and outer layer barrel are constituted, and filler 2 and bed course 3 is filled in internal layer cylinder, the filler 2 is
Quartz sand, partial size 3mm；The bed course 3 is cobble, partial size 12mm；Aerating system 4 is installed in the bottom of internal layer cylinder,
The aerating system 4 is aeration tube or aeration head；It is described disengaging gas system include connect with 1 bottom of reaction unit main body into
Tracheae 7 is equipped with methane on-line computing model 13 in air inlet pipe 7, and the air inlet of methane on-line computing model 13 is located in air inlet pipe 7
End is parallel with methane air inlet pipe 22 and air intake duct 23, is connected in turn in methane air inlet pipe 22 by inlet end to outlet side
Methane air intake pump 20, methane gas flowmeter 18 and valve 5 are sequentially connected in 23 upper air end to outlet side of air intake duct
Have air air intake pump 21, air gas flowmeter 19 and a valve 5, be located in the air inlet pipe 7 methane on-line computing model 13 with
Cooling gas check valve 6 and valve 5 are sequentially installed between reaction unit main body 1；The inlet and outlet system includes being connected to instead
The water inlet pipe 9 or outlet pipe 10 for answering 1 bottom of apparatus main body and top, are sequentially connected on water inlet pipe 9 by water inlet end to water outlet
There are inlet tank 16, intake pump 14 and valve 5, valve 5 is installed on outlet pipe 10, is loaded at sewage in inlet tank 16
Manage plant tail water；The hot water cyclesystem includes being connected to the cavity in reaction unit main body 1 between internal layer cylinder and outer layer cylinder
Hot water inlet pipe 11 and hot water outlet pipe 12, the other end of hot water inlet pipe 11 and hot water outlet pipe 12 with constant temperature water tank 17
Connection, the constant temperature water tank 17 is interior to be configured with existing thermostatic control system, to guarantee that the water temperature in constant temperature water tank 17 is constant；
It is mounted on valve 5 on hot water inlet pipe 11 and hot water outlet pipe 12, is installed at water inlet end on hot water inlet pipe 11
There is hot water circulating pump 15, escape pipe 8 is connected at the top of reaction unit main body 1, by inlet end to outlet side on escape pipe 8
It is sequentially installed with valve 5 and methane on-line computing model 13.
Construct it is above-mentioned for urban wastewater treatment firm advanced nitrogen oxidative system when, following steps can be used:
Step 1: being sealed after seed sludge and waste water is added into reaction unit main body 1, then starting disengaging gas system
System makes an air inlet in reaction unit main body 1 not intake, carries out 3 days microorganism colonizations；
Step 2: after the biofilm stage, while starting disengaging gas system, inlet and outlet system and hot water cyclesystem, make
Waste water in inlet tank 16 is sent into reaction unit main body 1 by intake pump 14 by normal air inlet, water inlet in reaction unit main body 1
Inside is come into full contact with filler 2, to construct the biofilm system of aerobic, anoxic and anaerobism on 2 surface of filler, and is passed through
Methane gas flowmeter 18 and air gas flowmeter 19 control methane concentration in mixed gas, make methane concentration in mixed gas
It is 3%, while is 28 DEG C by the reaction temperature that hot water cyclesystem controls reaction unit；
Step 3: the concentration of methane in air inlet pipe 7 and escape pipe 8 is monitored by methane on-line computing model 13, is observed in real time
The variation of methane concentration in air inlet pipe 7 and escape pipe 8, every pH, DO, temperature, ammonia nitrogen, sub- nitrogen, nitrate nitrogen in 1d detection Inlet and outlet water
With the physical and chemical indexes such as COD concentration, removal situation of the analysis system to total nitrogen；
Step 4: after operation a period of time, the concentration of methane in air inlet pipe 7 and escape pipe 8 is compared, computing system is to methane
Consumption, and the nitric efficiency of analysis system adjusts the concentration of methane in air inlet pipe 7 according to the actual situation；
Step 5: after system run all right, the growing state of 2 surface microorganism of filler in observing response apparatus main body 1, point
The form of microorganism on 2 surface of filler is analysed, and microbiological paper method is analyzed using 16S rRNA high-flux sequence, identification is main
Aerobic methane-oxidizing bacteria and denitrifying bacteria, so that 2 surface enrichment of filler is gone out aerobic methane-oxidizing bacteria, in this way can be by aerobic
Methane-oxidizing bacteria aoxidizes methane and generates organic matter, and the organic matter of generation, will be in tail water as carbon source needed for denitrifying bacterium denitrogenation
Nitrate nitrogen be converted into nitrogen, reach denitrogenation purpose.
When system uses continuously-running duty, water inlet pipe 9 is connected to the bottom of reaction unit main body 1, by outlet pipe
10 are connected to the top for answering apparatus main body 1, and hydraulic detention time range be 12~for 24 hours；When system uses intermittent duty mode
When, water inlet pipe 9 is connected to the top of reaction unit main body 1, outlet pipe 10 is connected to the bottom for answering apparatus main body 1, is run
Period is " water inlet 0.5h+ reaction 12~for 24 hours+water outlet 0.5h ", compares the denitrogenation effect of continuously-running duty and intermittent duty mode
Fruit, the mode operating system for selecting denitrogenation optimal.
Present embodiment mixes with air air inlet by sewage treatment plant tail water, methane and constitutes one suitable for aerobic methane oxygen
The environment for changing bacterium growth, is divided into two kinds of methods of operation (continuous operation and intermittent duty), which can be divided into four-stage: biofilm
Enrichment phase phase-- stationary phase adjustment period-.The mixed gas that methane and air are formed provides abundance for aerobic methane-oxidizing bacteria
Substrate, makes it by methane oxidation organic matter, provides carbon source for denitrifying bacterium, realizes denitrification denitrogenation.
Referring to Fig. 3, pollutant and nitrogen removal rate during intermittent duty is stablized are 8mg/L, total nitrogen in influent ammonium concentration
Concentration is in the case of 20mg/L and COD concentration is 20mg/L, and ammonia nitrogen average removal rate is 93.28%, and total nitrogen average removal rate is
94.14%.Therefore, the methane building denitrification type methane that the present invention is generated using anaerobic waste water pond or anaerobic sludge digestion aoxidizes
The nitrogen concentration in urban wastewater treatment firm water outlet can be effectively reduced in system, reduce sewage treatment plant's advanced treating operating cost, real
Now to the resource utilization of methane, the discharge of methane is reduced, slows down greenhouse effects caused by discharge of methane, is had significant economical
And environmental benefit.
Claims (6)
1. one kind be used for urban wastewater treatment firm advanced nitrogen oxidative system, including reaction unit main body (1), disengaging gas system,
Inlet and outlet system and hot water cyclesystem four are most of, it is characterised in that: the reaction unit main body (1) respectively with disengaging gas system
System, inlet and outlet system are connected with hot water cyclesystem；Reaction unit main body (1) is closed internal layer cylinder and outer layer barrel structure
At, in internal layer cylinder be filled with filler (2) and bed course (3), aerating system (4) are installed in the bottom of internal layer cylinder；It is described
Passing in and out gas system includes the air inlet pipe (7) connecting with reaction unit main body (1) bottom, is equipped with methane on air inlet pipe (7) and exists
Line monitor (13), the inlet end on air inlet pipe (7) positioned at methane on-line computing model (13) are parallel with methane air inlet pipe (22)
With air intake duct (23), on methane air inlet pipe (22) by inlet end to outlet side be connected in turn methane air intake pump (20),
Methane gas flowmeter (18) and valve (5) are connected with air in turn at air intake duct (23) upper air end to outlet side
Air intake pump (21), air gas flowmeter (19) and valve (5)；The inlet and outlet system includes being connected to reaction unit
The water inlet pipe (9) or outlet pipe (10) of main body (1) bottom and top, are successively connected on water inlet pipe (9) by water inlet end to water outlet
It is connected to inlet tank (16), intake pump (14) and valve (5), valve (5) are installed on outlet pipe (10)；The hot water circuit
System includes the hot water inlet pipe (11) being connected to the cavity on reaction unit main body (1) between internal layer cylinder and outer layer cylinder and heat
The other end of water outlet pipe (12), hot water inlet pipe (11) and hot water outlet pipe (12) are connect with constant temperature water tank (17), in heat
Valve (5) are mounted on water water inlet pipe (11) and hot water outlet pipe (12), on hot water inlet pipe (11) at water inlet end
Hot water circulating pump (15) are installed, escape pipe (8) are connected at the top of reaction unit main body (1), on escape pipe (8) by into
Gas end to outlet side is sequentially installed with valve (5) and methane on-line computing model (13).
2. it is according to claim 1 be used for urban wastewater treatment firm advanced nitrogen oxidative system, it is characterised in that: it is described into
Be sequentially installed between methane on-line computing model (13) and reaction unit main body (1) on tracheae (7) cooling gas check valve (6) and
Valve (5).
3. according to claim 1 be used for urban wastewater treatment firm advanced nitrogen oxidative system, it is characterised in that: described to fill out
Expect that (2) are quartz sand, partial size is 2~4mm；The bed course (3) is cobble, and partial size is 8~16mm.
4. it is according to claim 1 be used for urban wastewater treatment firm advanced nitrogen oxidative system, it is characterised in that: it is described into
Sewage treatment plant tail water is loaded in water tank (16).
5. a kind of based on being used for urban wastewater treatment firm advanced nitrogen oxidative system described in Claims 1 to 4 any one
Construction method, it is characterised in that the following steps are included:
Step 1: being sealed after seed sludge and waste water is added into reaction unit main body (1), then starting disengaging gas system,
So that an air inlet in reaction unit main body (1) is not intake, carries out 3 days microorganism colonizations；
Step 2: after the biofilm stage, while starting disengaging gas system, inlet and outlet system and hot water cyclesystem, make to react
Normal air inlet, water inlet in apparatus main body (1), and it is mixed by methane gas flowmeter (18) and air gas flowmeter (19) control
Methane concentration in gas is closed, makes methane concentration 1%~4% in mixed gas, while controlling and reacting by hot water cyclesystem
The reaction temperature of device is 25~30 DEG C；
Step 3: it by the concentration of methane in methane on-line computing model (13) monitoring air inlet pipe (7) and escape pipe (8), sees in real time
The variation for examining methane concentration in air inlet pipe (7) and escape pipe (8), every pH, DO, temperature, ammonia nitrogen, Asia in 1d detection Inlet and outlet water
The physical and chemical indexes such as nitrogen, nitrate nitrogen and COD concentration, removal situation of the analysis system to total nitrogen；
Step 4: after operation a period of time, the concentration of methane in air inlet pipe (7) and escape pipe (8) is compared, computing system is to methane
Consumption, and the nitric efficiency of analysis system adjusts the concentration of methane in air inlet pipe (7) according to the actual situation；
Step 5: after system run all right, the growing state of filler (2) surface microorganism in observing response apparatus main body (1), point
The form of microorganism on filler (2) surface is analysed, and microbiological paper method, identification master are analyzed using 16S rRNA high-flux sequence
The aerobic methane-oxidizing bacteria wanted and denitrifying bacteria make filler (2) surface enrichment go out aerobic methane-oxidizing bacteria, can pass through in this way
Aerobic methane-oxidizing bacteria oxidation methane generates organic matter, and the organic matter of generation is as carbon source needed for denitrifying bacterium denitrogenation, by tail
Nitrate nitrogen in water is converted into nitrogen, reaches denitrogenation purpose.
6. the construction method according to claim 1 for urban wastewater treatment firm advanced nitrogen oxidative system, feature
It is: when system is using continuously-running duty, water inlet pipe (9) is connected to the bottom of reaction unit main body (1), by outlet pipe
(10) be connected to the top for answering apparatus main body (1), and hydraulic detention time range be 12~for 24 hours；When system uses intermittent duty
When mode, water inlet pipe (9) is connected to the top of reaction unit main body (1), outlet pipe (10) is connected to and answers apparatus main body (1)
Bottom, the cycle of operation is " water inlet 0.5h+ reaction 12~for 24 hours+water outlet 0.5h ", compares continuously-running duty and intermittent duty side
The denitrification effect of formula, the mode operating system for selecting denitrogenation optimal.
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