CN108793405A - Build sewage water denitrification dephosphorization apparatus method, denitrification dephosphorization apparatus and denitrification and dephosphorization method - Google Patents
Build sewage water denitrification dephosphorization apparatus method, denitrification dephosphorization apparatus and denitrification and dephosphorization method Download PDFInfo
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- CN108793405A CN108793405A CN201810336489.8A CN201810336489A CN108793405A CN 108793405 A CN108793405 A CN 108793405A CN 201810336489 A CN201810336489 A CN 201810336489A CN 108793405 A CN108793405 A CN 108793405A
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- sewage
- denitrification
- tank body
- dephosphorization
- filler
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/308—Biological phosphorus removal
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Abstract
The present invention discloses a kind of method, denitrification dephosphorization apparatus and the method for carrying out sewage denitrification and dephosphorization using the device of structure sewage water denitrification dephosphorization apparatus, the method of structure apparatus of the present invention includes loading tank body and carrying out biofilm processing to the tank body after filling, the sewage water denitrification dephosphorization apparatus of the method for the present invention structure is simple in structure, easy to operate, cost using apparatus of the present invention treated sewage is low, nitrogen, tp removal rate are high in sewage, Nitrogen/Phosphorus Removal stablize, be particularly suitable for carbon-nitrogen ratio is low, the advanced nitrogen dephosphorization of the higher sewage of influent ammonia nitrogen processing.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of processing unit and processing method of sewage, especially
It is related to a kind of denitrification dephosphorization apparatus and denitrification and dephosphorization method of sewage.
Background technology
With the quickening of urbanization process and the increasingly raising of living standards of the people, urban wastewater discharge is also increasing rapidly
Add, a large amount of raw sewerages arbitrarily discharge, and cause the pollution getting worse of surface water body.Municipal sewage is Urban Water Environment
One of main source of pollution, the processing of municipal sewage and recycling use extremely urgent.Currently, China's municipal wastewater treatment plant uses
Technique in, be still using various activated sludge processes as mainstream.The processing of traditional life sewage is broadly divided into Physical, chemical method
And bioanalysis.Physical is mainly the undissolved suspended material gone in water removal, and chemical method is directed to add chemical drugs in waste water
Agent reaches purifying water effect by chemical reaction.Bioanalysis refers to the effect using microorganism, and a kind of technology of degradation of organic substances is raw
Object method is mainly used for organic matter and ammonia nitrogen in water removal etc., and compared with Physical and chemical method, biological treatment is in going water removal
There is larger advantage in terms of dissolubility pollutant.
Municipal wastewater treatment plant is largely all made of more traditional technique at present, and treatment effect is poor.As country-level A is discharged
Standard is gradually carried out, and the water outlet of sewage plant must satisfy TP≤0.5mg/L, therefore sewage plant requires increasingly the removal of phosphorus
It is high.Currently, dephosphorization technique is broadly divided into biological phosphate-eliminating technology and chemical dephosphorization technology.Biological phosphate-eliminating technology is generally by poly- phosphorus
Bacterium anaerobic-aerobic alternately in the environment of fully release phosphorus and excessively inhale phosphorus and reach dephosphorization purpose, there is energy saving, operation
The series of advantages such as expense is low.However, biological phosphate-eliminating technology cannot generally meet the requirement of water outlet TP≤0.5mg/L, thus it is dirty
Water factory often needs mating chemical dephosphorization technique reinforced phosphor-removing effect.Common chemical dephosphorization technology mainly add aluminium salt or molysite with
Precipitation reaction occurs for phosphate radical, realizes the direct removal of phosphorus；In addition, aluminium salt or molysite can be formed by hydrolysis and polymerisation it is more
Core hydroxy polymer adsorbs the phosphorus in water, realizes the indirect removal of phosphorus.
Nitrogen in water body mainly by ammonia nitrogen, nitrate nitrogen and nitrous state this in three in the form of exist, when the nitrite nitrogen in water
Excessively high, nitrosamine will be formed with protein combination by drinking this water, be a kind of strong carcinogen.Long-term drinking to body extremely not
Profit.Fish are more sensitive to ammonia nitrogen in water, when ammonia-nitrogen content Gao Shihui causes fish dead.Therefore for municipal sewage plant
Denitrogenation it is more and more important, but the problem of there is low ratio of carbon to ammonium for municipal sewage plant at present, this has become restriction biology
An important factor for nitric efficiency, sewage plant frequently with additional carbon method strengthened denitrification, this processing method treatment effect compared with
It is good, but there is also raising processing costs, it is difficult to the problem of controlling, easily causing secondary pollution.Therefore a kind of advanced treating is found
The method of low carbon-nitrogen ratio sewage has major significance.
Invention content
The purpose of the present invention is being directed to existing sewage denitrification and dephosphorization processing, a kind of taking off for sewage is provided
Nitrogen dephosphorization apparatus builds the method and sewage denitrification and dephosphorization method of the device.The device of the invention can be applied directly to sewage plant and set
Shi Zhong, device operating cost is low, realizes the advanced nitrogen dephosphorization of sewage effluents；It is handled using processing unit provided by the invention
Sewage, effluent quality fully meet the requirement of surface water discharge, and nitrogen, tp removal rate are high.Apparatus of the present invention are at low cost and denitrogenation removes
Phosphorus effect stability, removal efficiency is high, easily operated, easy to produce and use.
To achieve the purpose of the present invention, one aspect of the present invention provides a kind of method of structure sewage water denitrification dephosphorization apparatus, packet
Include the step of following sequence carries out：
1) tank body filling is handled
Denitrification dephosphorization apparatus includes the denitrogenation dephosphorizing tank placed vertically, set tank wall and with tank wall integrally connected
Effluent trough and the aerator in the middle and upper part of tank body lateral wall is set, wherein set gradually lower part from the bottom to top in tank body
Packing area, bearing area, top packing area, and top filler, lower part filler are loaded respectively in upper and lower part packing area, from top to bottom
Form upper packing layers, supporting layer and lower part packing layer；The upper surface of bearing area is uniformly arranged aeration tube, and aerator exists with setting
The aeration tube of bearing area upper surface is connected；
2) biofilm is handled
By sewage from the top of denitrogenation dephosphorizing tank inject, flow to flow down, successively pass through upper packing layers, supporting layer and
Lower part packing layer, the side wall from tank body lower part close to bottom flows out, and opens aerator, at the Biofilm Colonization for carrying out device
Reason, until device exhalant region effluent quality maintains to stablize, the nitrogen removal rate of sewage reaches and is maintained at 80% or more, and total phosphorus
Removal rate reaches and saves as 85% or more to get sewage denitrification and dephosphorization processing unit.
Wherein, the ratio between top packing area described in step 1) and the volume of the tank body are (30-40)：100, preferably
30：100；The ratio between volume of tank body of the bearing area and described device is (5-10)：100, preferably 10：100；The lower part
The ratio between volume of tank body of packing area and described device is (50-70)：100, preferably (50-60):100, further preferably
60：100；
In particular, the height of the bearing area is 5-10cm, preferably 8-10cm, further preferably 10cm；Under described
The height of portion packing area is 50-70cm, preferably 60cm；The height of the top packing area is 30-40cm, preferably 30cm.
Wherein, the top filler, lower part filler are the filler with denitrification dephosphorization function.
In particular, top filler described in step 1) includes zeolite and lime stone；Lower part filler includes troilite particle, jade
Meter slug particle.
Especially, the corn cob granule is that the cob after corn ear threshing crushes.
Corncob is the cob after corn ear remove seed threshing, typically constitutes from the 20.0%~30.0% of corncob weight, tool
In a organized way uniformly, hardness is suitable, good toughness, the advantages that water imbibition is strong, wear-resisting property is good, be a kind of money of important recoverable
Source.The main component of corncob is based on cellulose, hemicellulose, lignin and xylan.
In particular, after mixing by the zeolite and lime stone, being filled to top packing area；By troilite particle, jade
Meter slug particle after mixing, is filled to lower part packing area, forms the packing area that intensified denitrification and dephosphorization processing is carried out to sewage.
Especially, the ratio between volume of zeolite and lime stone is 3 in the top filler：(0.5-1), preferably 3：1；It is described
The ratio between volume of troilite particle, corn cob granule in the filler of lower part is 1：(0.5-1), preferably 1：1.
In particular, sized zeolite particles are 4-8mm, preferably 4mm in the top filler；Limestone particle size is 4-8mm, preferably
For 4mm.The grain size of troilite in the lower part filler is 4-8mm, preferably 4mm；Corncob in the lower part filler
The grain size of grain is 6-10mm, preferably 6mm.
Especially, the top, the porosity of filler is 25%-50% in the packing area of lower part, preferably 30%.
Wherein, the supporting layer is with the perforative hole of vertical direction so that can be led to by the water of top packing area
It crosses supporting layer and enters lower part packing area.
Supporting layer have can load-bearing, solid characteristic plays the role of support top packing area and water distribution uniformity.
In particular, aeration tube is set the upper surface of supporting layer is uniformly distributed, aeration tube and the exposure being arranged outside tank wall
Mechanism of qi is connected, when opening aerator, uniform aeration.
The parameter of aerator is mainly gas flow, and the charge flow rate of aeration is related to the water flow that it is intake, mainly
It is control gas-water ratio, the i.e. flow-rate ratio of gas and liquid, the range of flow-rate ratio is 1:1 to 5:Between 1, preferably 1：1.
The present invention be directed to the exceeded sewage of ammonia nitrogen and total nitrogen content to be handled, without being aerated, the dissolving in sewage
Oxygen content is relatively low, the ammonia nitrogen that can not be effectively removed in water, aerator primarily to go water removal in ammonia nitrogen, aerator
Purpose is that sufficient dissolved oxygen is provided for top packing area, so that mineralized nitrogen is nitrate nitrogen by nitrobacteria, from lower part
Packing area converts nitrate nitrogen to nitrogen, discharges into the atmosphere to achieve the effect that denitrogenation, the purpose of aeration opening is to expose
The uniformity of gas ensures the nitrification effect of top filler.
In particular, the denitrogenation dephosphorizing tank is cuboid, the square bodily form, prismatic, preferably cuboid.
Especially, a height of 100-120cm of the cuboid denitrogenation dephosphorizing tank, preferably 100cm.
In particular, it is provided with gas vent at the top of the tank body, the gas for aeration opening to be discharged.
Especially, water inlet is offered on the top of tank wall, sewage is introduced into tank body, water distribution uniformity.By sewage plant
Water outlet is delivered to tank body top packing area from water inlet；Using supporting layer and lower part packing area, from tank wall lower part with
The discharge outlet that effluent trough is connected will pass through denitrogenation dephosphorizing treated water outlet discharge tank body.
In particular, the denitrification dephosphorization apparatus using lower to by the way of stream.
Especially, during flow is defluent, Air Exposure is carried out, opens aerator, and it is (1- to control gas-water ratio
5)：1, preferably 1:1.
Wherein, the exhaust outlet for gas in aeration process to be discharged is provided at the top of denitrogenation dephosphorizing tank；For load or
Take out the top filler filler of top filler.
In particular, further include to the denitrogenation dephosphorizing tank convey gas aerator, be denitrogenation dephosphorizing tank in sewage into
Row Air Exposure provides air or oxygen.
Wherein, the aerator is connected with the air inlet by conduit, is deliver a gas to inside denitrogenation dephosphorizing tank.
In particular, water inlet is offered on the top of tank wall and close to the position at top, for being injected into tank body
Sewage；Air inlet is offered in the middle and upper part of tank wall, air inlet, which is connected with the aerator into tank body, injects gas；
Lower part filler filler is offered in the middle part of tank body, and lower part filler is loaded or taken out into tank body；Tank wall lower part is close
The position of bottom offers discharge outlet, and discharge outlet is connected with the effluent trough, will be imported by the aqueous of denitrogenation dephosphorizing processing
Effluent trough, purified water outlet flow into effluent trough from discharge outlet, into the water outlet of effluent trough from the overflow port at the top of effluent trough
It overflows.
Especially, the installation position of the air inlet is consistent with the position of the supporting layer, and is connected with supporting layer,
Extraneous gas is inputted into supporting layer, Air Exposure is carried out in tank body；The lower part filler filler is located at the lower section of air inlet,
It is adapted with the top position of lower part packing layer；The discharge outlet is usually connected with the bottom of effluent trough.
Wherein, sewage described in step 2) is that low C/N compares sewage.
In particular, the low C/N is than the sewage for C/N than≤2, preferably C/N is than the sewage for 1~2.
Especially, the sewage selection C/N ratios are less than 2, and preferably C/N is than the sewage treatment plant tail water for 1~2, municipal administration
Sewage treatment plant's sewage, sanitary sewage.
Wherein, the hydraulic detention time of control sewage is 4-6, preferably 5h in step 2).
In particular, the pH of sewage is 7-8, preferably 7.3-7.6 in step 2).
Wherein, aerator is opened, gas is injected into tank body, is aerated, gas-water ratio is controlled wherein in aeration process is
(1-5)：1, preferably 1:1.
Another aspect of the present invention provides a kind of method of structure sewage water denitrification dephosphorization apparatus, including the step that following sequence carries out
Suddenly：
1) tank body filling is handled
Denitrification dephosphorization apparatus includes the denitrogenation dephosphorizing tank placed vertically, is arranged in tank wall and integrally connects with tank wall
The effluent trough that connects and the aerator in the middle and upper part of tank body lateral wall is set, wherein under being set gradually from the bottom to top in tank body
Portion packing area, bearing area, top packing area, and top filler, lower part filler are loaded respectively in upper and lower part packing area, from up to
Lower formation upper packing layers, supporting layer and lower part packing layer；The upper surface of bearing area is uniformly arranged aeration tube, aerator and setting
Aeration tube in bearing area upper surface is connected
2) biofilm is handled
Anaerobic activated sludge is injected into the lower part packing layer of tank body lower part and submerges lower part filler；Aerobic activated sludge is filled
It notes to the upper packing layers on tank body top and submerges top filler, immersion treatment is carried out to top, lower part filler；Immersion treatment it
Afterwards, then by the water inlet on sewage introducing device tank body top, to stream under flow, successively by top packing area, supporting layer, lower part
Packing area, the side wall from tank body lower part close to bottom flows out, and opens aerator, carries out the Biofilm Colonization processing of device, directly
It maintains to stablize to device exhalant region effluent quality, the nitrogen removal rate of sewage reaches and is maintained at 80% or more, and total phosphorus ligands
Rate reaches and saves as 85% or more to get sewage denitrification and dephosphorization processing unit.
Wherein, the activated sludge of step 2) the aerobic activated sludge selection municipal sewage plant, preferably card Ruse
The activated sludge of your oxidation ditch reflux；The anaerobic activated sludge selects anaerobic fluidized bed sludge, preferably upflow type anaerobic
Sludge in sewage sludge reactor.
In particular, the aerobic activated sludge is after concentration in Reperfu- sion to tank body, the aerobic activated sludge after concentration
MLSS a concentration of 18000-20000mg/L, preferably 19000mg/L；Reperfu- sion is to tank after anaerobic activated sludge concentration
In vivo, a concentration of 18000-20000mg/L of the MLSS of the aerobic activated sludge after concentration, preferably 19000mg/L.
Especially, a concentration of 3000-6000mg/L of the MLS of the aerobic activated sludge of the municipal sewage plant；It is described
A concentration of 3000-6000mg/L. of MLSS of anaerobic fluidized bed anaerobic activated sludge
In particular, concentration activated sludge submerges tank body 1-2h, preferably 1.5h.
Especially, further include opening aerator during immersion treatment, carry out the Air Exposure in immersion treatment stage, control
Aeration quantity processed is 1-2L/min, preferably 1L/min.
It is described well support sludge be municipal sewage plant oxidation ditch activated sludge, the reflux of municipal sewage plant secondary settling tank it is good
Oxygen activity sludge is also applied for the present invention, and the anaerobic sludge is municipal sewage plant anaerobism from anaerobic fluidized bed middle selection
Fluid bed sludge.
Wherein, sewage described in step 2) be low C/N than sewage.
In particular, the low C/N is than the sewage for C/N than≤2, preferably C/N is than the sewage for 1~2.
Especially, the sewage selection C/N ratios are less than 2, and preferably C/N is than the sewage treatment plant tail water for 1~2, municipal administration
Sewage treatment plant's sewage, sanitary sewage.
Wherein, the hydraulic detention time of control sewage is 4-6h, preferably 5h in step 2).
In particular, the pH of control sewage is 7-8, preferably 7.3-7.6 in step 2).
In particular, in Biofilm Colonization processing procedure, the gas-water ratio for controlling aeration is (1-5)：1, preferably 1:1.
Further aspect of the present invention provides a kind of built-up sewage water intensification denitrification dephosphorization dephosphorization apparatus according to the method described above.
Wherein, the ratio between the top packing area and the volume of the tank body are 30-40：100, preferably 30：100；It is described
The ratio between volume of tank body of bearing area and described device is 5-10：100, preferably 10：100；The lower part packing area with it is described
The ratio between volume of tank body of device is (50-70)：100, preferably (50-60):100, further preferably 60：100；
In particular, the height of the bearing area is 5-10cm, preferably 8-10cm, further preferably 10cm；Under described
The height of portion packing area is 50-70cm, preferably 60cm；The height of the top packing area is 30-40cm, preferably 30cm.
Wherein, the filler with denitrification dephosphorization function loaded in the top packing area is made of zeolite and lime stone,
The filler with denitrification dephosphorization function loaded in the packing area of lower part is made of troilite particle, corn cob granule.
In particular, the corn cob granule crushes for the cob after corn ear threshing.
Especially, the ratio between volume of the zeolite, lime stone is 3：0.5-1, preferably 3：1.The troilite particle, jade
The ratio between volume of meter slug particle is 1：0.5-1 is preferably 1：1.
In particular, the sized zeolite particles in the top packing area are 4-8mm, preferably 4mm；Limestone particle size is 4-8mm,
Preferably 4mm.The grain size of troilite in the lower part packing area is 4-8mm, preferably 4mm；In the lower part packing area
The grain size of corn cob granule is 6-10mm, preferably 6mm.
Especially, the top, the porosity of filler is 25%-50% in the packing area of lower part, preferably 30%.
In particular, the tank body is cuboid, the square bodily form, prismatic, preferably cuboid.
In particular, it is provided with gas vent at the top of the tank body, the gas for aerator generation to be discharged.
Another aspect of the invention provides a kind of carrying out sewage denitrification and dephosphorization processing using above-mentioned sewage water denitrification dephosphorization apparatus
Method, including by low C/N than in sewage transport to above-mentioned sewage denitrification and dephosphorization processing unit, control flow flows downward, waterpower
Residence time >=2h.
Wherein, the hydraulic detention time selects 2-8h.
In particular, being 2-4h, preferably 3h in summer hydraulic detention time；Hydraulic detention time is 6-8h in winter, excellent
It is selected as 7h.
Especially, in summer by the water distribution area of the lower part of the sewage transport to denitrification dephosphorization apparatus, flow is from bottom to up
Bearing area, packing area are flowed through from water distribution area, into exhalant region, be discharged, wherein control hydraulic detention time is 2-4h, excellent successively
It is selected as 3h.
Especially, in winter by the water distribution area of the lower part of the sewage transport to denitrification dephosphorization apparatus, flow is from bottom to up
Bearing area, packing area are flowed through from water distribution area, into exhalant region, be discharged, wherein control hydraulic detention time is 6-8h, excellent successively
It is selected as 7h.
In particular, the sewage disposal temperature being delivered in denitrification dephosphorization apparatus of the present invention is at 10-35 DEG C, preferably 25-30
℃。
Wherein, the pH for controlling sewage is 7-8, preferably 7.3-7.6.
In particular, the sewage is low C/N ratios.
In particular, the low C/N is than the sewage for C/N than≤2, preferably C/N is than the sewage for 1~2.
Especially, the sewage selection C/N ratios are less than 2, and preferably C/N is than the sewage treatment plant tail water for 1~2, municipal administration
Sewage treatment plant's sewage, sanitary sewage.
In particular, further including opening aerator while injecting sewage to apparatus of the present invention, the sewage into tank body is equal
Even aeration carries out Air Exposure.
Especially, it is (1-5) that gas-water ratio is controlled during the Air Exposure：1, preferably 1：1.
Compared with the existing technology, the invention has the advantages that：
1, the troilite, the corncob that are used in intensified denitrification and dephosphorization device of the invention are cheap, raw material are suitable for and obtain
It takes, operating mode is stable and without adding additional carbon, reduces cost.
2, the corncob of packing area can during the sewage water intensification denitrification dephosphorization apparatus treated sewage that the present invention uses
Carbon source is provided for heterotrophic denitrification, while it is with light weight, even tissue, hardness are suitable, good toughness, water imbibition are strong, wear-resisting
The advantages that performance is good.
3, lime stone and zeolite are contained in the top packing area of sewage water denitrification dephosphorization apparatus of the invention, and top packing area is main
It is nitrate nitrogen that effect, which is by mineralized nitrogen, and denitrification is carried out in lower part packing area；Zeolite is the good carrier of nitrobacteria, lime
Stone can provide basicity for the nitration reaction of nitrobacteria and the anti-nitration reaction of lower part packing area.Contain sulphur iron in lower part packing area
Mine, corncob, troilite strengthen the dephosphorization effect of device for there are Fe3+ in the autotrophic denitrification product product of electron donor
Fruit, corncob can either provide the carrier of growth attachment for microorganism, while also provide carbon source for microorganism heterotrophism denitrogenation.It adopts
The process advan combined with heterotrophic denitrification denitrogenation and autotrophic denitrification denitrogenation is in improving nitric efficiency, while the micro- life of heterotrophism denitrogenation
The addition of object advantageously reduces the sulphates content of water outlet.
4, for low C/N using the present invention than sewage water denitrification dephosphorization apparatus treated sewage, the nitric efficiency of sewage is high, nitrogen removal
Rate is more than 91%, reaches 91.7-99.5%；Sewage dephosphorization is efficient, and tp removal rate is more than 90%, reaches 90.6-99.2%.
5, sewage water intensification denitrification dephosphorization apparatus of the invention first converts sewage ammonia nitrogen to nitrate nitrogen, then in lower part filler
Area goes to denitrogenate and phosphorus.When denitrogenation processing occurring in tank body, when troilite provides electron donor, it is anti-that denitrogenation is completed under anaerobic
It answers：NO3 -+13FeS2+23H2O→12N2+23SO4 2-+13Fe(OH)3+13H+；When troilite provides electron donor for denitrification reaction
When, Fe3+ is produced, can be combined with the phosphate radical in water and generate the slightly solubilities substances such as sulphate of iron, to remove the phosphorus in water
It removes.When carrying out heterotrophic denitrification denitrogenation as carbon source using corncob：
C6H12O6+12NO3 -→6H2O+6CO2+12NO2 -+ energy,
CH3COOH+8NO3 -→6H2O+10CO2+4N2+8OH-+ energy,
The carbon dioxide generated during this is conducive to the formation of anaerobic environment, while can be provided for denitrification reaction centainly
Basicity.The sewage water intensification denitrification dephosphorization apparatus of the present invention is carried out at the same time different oxygen, at autotrophic denitrification dephosphorization in same packing area
Reason, the different oxygen denitrification denitrogenation processing of corncob generate intermediate product NO2 -, nitrogen can be changed into the follow-up process, while sulphur is certainly
It supports thiobacillus denitrificans and utilizes NO2 -It is translated into nitrogen.Heterotrophism thiobacillus denitrificans utilize the energy generated to be used for heterotrophic microorganism
Growth and breeding.
The top packing area of the sewage water denitrification dephosphorization apparatus of the present invention includes zeolite and lime stone, and takes aeration measure will
Mineralized nitrogen is nitrate nitrogen, then has troilite, niblet in the condiment area of lower part, certainly using microorganism heterotrophism denitrogenation coupling sulphur
Denitrogenation technology is supported, the denitrogenation dephosphorizing efficiency of device is improved, autotrophy, different oxygen denitrogenation dephosphorizing is carried out at the same time in packing area.Denitrogenation sulphur bar
Bacterium is that electron donor carries out denitrification using sulphur, realizes that denitrogenation, thiobacillus denitrificans are that electron donor progress is anti-using troilite
When nitrification, the iron ion of generation is conducive to total phosphorus in water removal.Heterotrophism denitrification microorganism is carried out using corncob as carbon source different
Support denitrification denitrogenation.Corncob has many advantages, such as that suitable even tissue, hardness, good toughness, water imbibition is strong, wearability is good.Device
In corncob can both be provided for microorganism growth attachment carrier, while may be heterotrophic denitrifier provide carbon
The progress in source, heterotrophic denitrification denitrification process can also influence sulphur autotrophic denitrification denitrogenation, reduce the sulfate of generation.Intensifier
Nitric efficiency.Using troilite as electron donor, the phosphor-removing effect of sewage is improved, filler also assures the acid of sewage in device
Alkali is stablized, the Fe generated in denitrification process3+There is preferable removal effect for total phosphorus, improves denitrogenation, dephosphorization efficiency.
Description of the drawings
Fig. 1 is structural schematic diagram when denitrification dephosphorization apparatus provided by the invention uses.
Reference sign
1, denitrogenation dephosphorizing tank；2, effluent trough；3, aerator；4, exhaust outlet；5, upper layer filler filler；6, discharge outlet；7,
Upper layer packing layer；8, supporting layer；9, lower layer's packing layer；10, overflow port；11, water inlet；12, air inlet；13, lower layer's filler fills
Fill out mouth；14, intake pump.
Specific implementation mode
The invention will now be further described with reference to specific embodiments, the advantages and features of the present invention will be with description and
It is apparent.But examples are merely exemplary for these, and it is not intended to limit the scope of the present invention in any way.People in the art
Member it should be understood that without departing from the spirit and scope of the invention can to the details of technical solution of the present invention and form into
Row modifications or substitutions, but these modifications and replacement are each fallen in protection scope of the present invention.
Experimental method used in following embodiments is conventional method unless otherwise specified.
The materials, reagents and the like used in the following examples is commercially available unless otherwise specified.
The present invention handles low C/N than sewage using sewage water denitrification dephosphorization apparatus, carries out intensified denitrification and dephosphorization processing, by into
Sewage effluents are injected the de- of apparatus of the present invention by water pump from the water inlet being arranged on the denitrogenation dephosphorizing tank top of apparatus of the present invention
In nitrogen dephosphorization tank 1, flow is from top to bottom followed by upper packing layers, supporting layer, lower part packing layer, from the water outlet of tank base
Mouthfuls 6 flow out, into be arranged tank body side and in the effluent trough of tank wall integrally connected 2, then at the top of effluent trough
Overflow port 10 overflows.
Sewage first flows into denitrogenation dephosphorizing tank from the water inlet on denitrogenation dephosphorizing tank top, flows through upper packing layers, which adopts
With the lower water intake mode to stream.Supporting layer plays the role of certain water distribution uniformity simultaneously, is then passed through lower part packing area and carries out dirt
The denitrogenation dephosphorizing of water finally passes through effluent trough and drains.
Apparatus of the present invention are seated in the top packing area of denitrogenation dephosphorizing tank mainly for the treatment of the higher sewage of influent ammonia nitrogen
Top filler effect mainly go water removal in ammonia nitrogen, sulphur autotrophic denitrification be difficult to water removal in ammonia nitrogen, because adding above
Add one removal ammonia nitrogen filter material layer, by mineralized nitrogen be nitrate nitrogen in order to lower part packing area carry out denitrification denitrogenation.On
Portion and lower part packing area filler have denitrification dephosphorization function, and it is nitrate nitrogen, denitrogenation that top packing area, which is mainly responsible for mineralized nitrogen,
Mainly in lower part packing area, dephosphorization has in two regions, but lower part packing area removal effect is more preferable.
As shown in Figure 1, the sewage water intensification denitrification dephosphorization apparatus of the present invention includes denitrogenation dephosphorizing tank 1 independent of each other, water outlet
Slot 2 and aerator 3, denitrogenation dephosphorizing tank are cuboid, and the direction perpendicular to ground is the short transverse of denitrogenation dephosphorizing tank, long
The bottom surface of the formation of degree and width direction is parallel with ground, fixes on the ground；Effluent trough 2 is in cuboid, is located in length
The side of cube shape denitrogenation dephosphorizing tank, perpendicular to the ground, i.e. effluent trough and any one side wall of tank body surrounding is attached,
Its top is provided with overflow port 10, and the water outlet in effluent trough is overflowed from overflow port.
Denitrogenation dephosphorizing tank is the tank body for the rectangular-shape placed vertically, and top is provided with exhaust outlet 4 and the filling of upper layer filler
Mouth 5, the top of tank wall offers water inlet 11, middle and upper part offers air inlet 12, middle part offers lower layer's filler filling
Mouth 13, tank wall lower part offers discharge outlet 6 close to the position of bottom, and tank interior sets gradually top filler from top to bottom
Layer 7, supporting layer 8, lower part packing layer 9.Wherein, exhaust outlet is for being discharged aerator in sewage water intensification denitrification dephosphorization processing procedure
The gas being passed through in tank body；Upper layer filler filler is used to that upper layer filler to be loaded or taken out into tank body；Water inlet is arranged in tank
Body sidewall top is close to top position, for injecting sewage into tank body；The top (upper surface) of supporting layer is uniformly arranged aeration
The top of pipe (not shown), i.e. aeration tube and supporting layer fits closely, and is connected with air inlet, by aerator input
Gas uniformly introduces in denitrogenation dephosphorizing tank, and uniform aeration.The installation position of air inlet and the position of supporting layer are adapted, and are set
It sets the aeration tube on supporting layer top to be connected, the gas of aerator is inputted into supporting layer, Air Exposure is carried out in tank body；Under
Layer filler filler is located at the lower section of air inlet, is adapted with the top position of lower part packing layer, loads or take out into tank body
Lower layer's filler；Discharge outlet is connected with effluent trough and (is usually connected with the bottom of effluent trough), will be by denitrogenation dephosphorizing processing
Aqueous imports effluent trough, and purified water outlet flows into effluent trough from discharge outlet, into the water outlet of effluent trough from the top of effluent trough
Overflow port 10 overflow.
For the tank body of the present invention other than selecting cuboid, the tank body of other any shapes is suitable for the present invention, such as
Prism-shaped, square bodily form etc..In the specific embodiment of the invention, effluent trough is said by being arranged for the right side of denitrogenation dephosphorizing tank
Bright (such as Fig. 1), effluent trough can be arranged in the arbitrary side of surrounding of denitrogenation dephosphorizing tank.
The filler with denitrification dephosphorization function loaded in upper packing layers is made of zeolite and lime stone, is filled out in packing layer
The porosity of material be 25%-50%, preferably 30%.The ratio between volume of zeolite, lime stone is 3：0.5-1, preferably 3：1,
Sized zeolite particles in the packing layer of middle and upper part are 4-8mm, preferably 4mm；Limestone particle size is 4-8mm, preferably 4mm.Top is filled out
The ratio between volume of tank body of denitrogenation dephosphorizing tank of the bed of material and denitrification dephosphorization apparatus is 30-40：100, preferably 30：100；That is top
The ratio between the height of packing layer and the height of tank body are 30-40：100, preferably 30：100.
Supporting layer is arranged between upper packing layers and lower part packing layer, and upper and lower part filler is separated, and has and is uniformly distributed
The perforative hole (not shown) of vertical direction so that lower part can be entered by supporting layer by the water of top packing area
Packing area.
Supporting layer have can load-bearing, solid characteristic, for supporting, the effect of support top filler and water distribution uniformity.
The ratio between volume of tank body of denitrogenation dephosphorizing tank of supporting layer and denitrification dephosphorization apparatus is 5-10：100, preferably 10：100, that is, it holds
It is 5-10 to hold in the palm the ratio between the height of layer and the height of tank body：100, preferably 10：100.
Supporting layer in the embodiment of the present invention is the plank with equally distributed vertical through hole, the supporting layer in the present invention
Other than for the plank with equally distributed vertical through hole, the cement plate with equally distributed vertical through hole can also be
Or glass epoxy.It is existing known for separating filler, the plate with equally distributed vertical through hole, load-bearing up and down in this field
Material is adapted for use as the supporting layer of the present invention.
The filler with denitrification dephosphorization function loaded in the packing layer of lower part is made of troilite particle, corn cob granule,
In packing layer the porosity of filler be 25%-50%, preferably 30%.Troilite particle, corn cob granule the ratio between volume be
1：0.5-1 is preferably 1：1, the grain size of the troilite in the packing layer of middle and lower part is 4-8mm, preferably 4mm；The lower part filler
The grain size of corn cob granule in layer is 6-10mm, preferably 6mm.The denitrogenation dephosphorizing tank of lower part packing area and denitrification dephosphorization apparatus
The ratio between the volume of tank body be the ratio between the volume of tank body of the lower part packing area and described device be (50-70)：100, preferably
For (50-60):100, further preferably 60：100, i.e. the ratio between the height of lower layer's packing layer and the height of tank body is (50-70)：
100, preferably (50-60):100, further preferably 60：100.
The height of denitrogenation dephosphorizing tank is 100-120cm, preferably 100cm；The height of supporting layer is 5-10cm, preferably 8-
10cm, further preferably 10cm；The height of the upper packing layers is 30-40cm, preferably 30cm, the lower part packing layer
Height be 50-70cm, preferably 50-60cm, further preferably 60cm.
Aerator introduces oxygen into denitrogenation dephosphorizing tank by the air inlet 12 for being arranged in the tank body middle and upper part of denitrogenation dephosphorizing tank
Inside, and air inlet is connected with the aeration tube for being arranged in supporting layer upper surface, uniform aeration.Air water is controlled in aeration process
Than for (1-5)：1, preferably 1:1.
The operation principle of sewage water denitrification dephosphorization apparatus of the present invention is as follows：
The sewage of sewage effluents storage tank is under the action of intake pump 14 from the upper of the denitrogenation dephosphorizing tank of apparatus of the present invention
Portion's water inlet 11 flow into tank interior, water distribution uniformity, flow from top to bottom on followed by upper layer packing area, bearing area, lower layer
Packing area is discharged from the discharge outlet 6 positioned at lower part and flows into effluent trough 2, overflowed from the overflow port 10 on effluent trough top, by depth
Denitrification dephosphorization apparatus is flowed out in the water outlet of denitrogenation dephosphorizing processing.
Sewage is transported into upper packing layers by water inlet and carries out nitration reaction, by water under the action of nitrobacteria
In mineralized nitrogen be nitrate nitrogen, then pass through bearing area, into lower part packing area, the sulphur in nitrate and packing area in water
Iron ore, corn cob granule are in contact, when the region carries out denitrogenation, dephosphorisation reaction, and troilite provides electron donor, in anaerobism item
Denitrification reaction is completed under part：
NO3 -+13FeS2+23H2O→12N2+23SO4 2-+13Fe(OH)3+13H+；
When troilite provides electron donor for denitrification reaction, Fe is produced3+, can be combined with the phosphate radical in water and generate sulfuric acid
The slightly solubilities substance such as molysite, thus by the phosphorus ligands in water.The Fe of generation3+The salt of one side and phosphate radical formation slightly solubility, one
By dissolving and absorbing water intense hydrolysis occurs for aspect, and each polymer reaction occurs while hydrolysis, generates with longer
The multinuclear hydroxo complex of linear structure makes coacervation of colloid by the volume effect of sweeping of charge neutrality, adsorption bridging and flco, then passes through
Precipitation is detached phosphorus ligands.Heterotrophic denitrification denitrogenation is carried out by carbon source of corncob：C6H12O6+12NO3 -→6H2O+6CO2+
12NO2 -+ energy, CH3COOH+8NO3 -→6H2O+10CO2+4N2+8OH-+ energy, the carbon dioxide generated in the process is advantageous
In the formation of anaerobic environment, while certain basicity can be provided for denitrification reaction, for the sulfuric acid generated in denitrification process
Salt has certain removal effect, it is ensured that the stabilization of sewage pH in device is more advantageous to the denitrogenation of device.
Apparatus of the present invention are at low cost and Nitrogen/Phosphorus Removal is stablized, and removal efficiency is high, easily operated, is readily produced and makes
With.
The present invention carries out sewage disposal using defluent mode, selects zeolite and lime stone filling out as top packing area
Material selects troilite, corn core particle as lower part packing area, and sewage flows into top packing area, top filler by intake pump
Mineralized nitrogen is nitrate by nitrobacteria in area, and sewage flows to lower part packing area, sulphur autotrophic denitrification bacterium by supporting layer
Denitrification denitrogenation is carried out using sulphur source, while heterotrophism denitrification microorganism carries out heterotrophism denitrogenation for carbon source using corncob and can improve
The removal efficiency of the total nitrogen of system entirety.
It maintains water inlet carbon-nitrogen ratio between 1~2 in reaction, limits the proliferation of heterotrophic denitrification bacterium.Maintaining reaction temperature
Between 25~35 DEG C.
Embodiment 1
1, tank body is loaded
As shown in Figure 1, the tank body of the denitrification dephosphorization apparatus of the present invention is cuboid, set at the top of the tank body of denitrogenation dephosphorizing tank
Set exhaust outlet；From top to bottom it is divided into top packing area, bearing area, lower part packing area successively in tank body.Effluent trough is arranged in tank
The right side of body, the bottom of effluent trough are connected with the lower part of tank body, the purified water outlet in tank body after upper and lower packing layer
Effluent trough is flowed into from overflow port, is then discharged from the top of effluent trough.
Wherein, the height of the tank interior of denitrogenation dephosphorizing tank is 100cm, and the height of middle and upper part packing area is 30cm, on
Portion's filler is the mixture of zeolite and lime stone, and the grain size of zeolite and lime stone is 4-8mm, the wherein volume of zeolite and lime stone
Score ratio is 3:1；The porosity of filler is 30%；The height of lower part packing area is 60cm, inside fills out troilite particle, corncob
Particle, the grain size of wherein troilite is 4-8mm, the grain size of corn cob granule be 6-10mm, wherein, troilite, corn cob granule
Volume fraction be 1：1；The porosity of filler is 30% in packing area；Supporting layer is the glass steel material that height is 10cm
Plate has through-hole from top to bottom.
Tank body lower part packing area is provided with discharge outlet on the right side of tank base, flows into and is discharged by lower part packing area
Slot, water outlet are discharged from the overflow port on effluent trough top.
Due to carrying out Air Exposure in denitrogenation dephosphorizing processing procedure, a large amount of gas that aerator is inputted to tank interior,
In order to keep air pressure balance, at the top of tank body, setting exhaust outlet is for being discharged the gas generated in aeration process.
2, biofilm is handled
By sewage of the C/N of sewage treatment plant than≤2 from the top water inlet of the denitrogenation dephosphorizing tank of apparatus of the present invention
Injection, sewage is to flowing down, followed by top packing area, supporting layer, lower part packing area, into after effluent trough, from effluent trough
Top overflow port outflow, intakes while opening aerator, and it is 1 to control gas-water ratio:1, by adjusting inflow, control waterpower is stopped
It is 5h (being usually 4-6h), continuous operation 30 days (being usually 20-40 days), until stable effluent quality is to get this hair to stay the time
Bright sewage water intensification denitrification dephosphorization apparatus.
The daily monitoring device effluent quality in biofilm processing procedure, detect COD, total nitrogen and the ammonia nitrogen of water outlet, total phosphorus,
The average value of nitrate nitrogen, ammonium nitrogen, nitrite nitrogen concentration, calculates corresponding removal rate, and the effluent quality of apparatus of the present invention maintains
Stablize, the nitrogen removal rate of sewage reaches and is maintained at 80% or more, and total tp removal rate reaches and is stored in 85% or more, guarantor
Fixed, the of the invention sewage water intensification denitrification dephosphorization apparatus component that keeps steady is completed.
3, denitrogenation dephosphorizing is handled
Strengthened denitrification processing processing is carried out for being discharged between the filtering cloth filtering pool of sewage treatment plant of Changge City of Henan Province, it will
Water outlet is stored in sewage storage tank between filtering cloth filtering pool, wherein sewage water, water quality such as table 1.
Sewage enters the top packing area of the denitrogenation processing tank of apparatus of the present invention by intake pump, then sequentially enters support
Layer and lower part packing area carry out advanced nitrogen processing, are discharged after finally flowing into effluent trough, and wherein sewage is pumped into the tank body of the present invention
When interior, while aerator is opened, and it is 1 to control gas-water ratio:1 (is usually 1-5:1)；Control the hydraulic retention of sewage in the device
Time is 3h (be usually 2-8h, can also be 2-4h, can also be 4-8h), and temperature is maintained 25-30 in system operation
DEG C, inlet flow-patterm maintains essentially in 7.3-7.6, between DO maintains essentially in 1.8-2.2, completes entire denitrogenation dephosphorizing process.
After the processing of denitrification dephosphorization apparatus of the present invention, effluent quality (COD, nitrate, ammonia nitrogen, total phosphorus) measures sewage
As a result be shown in Table 1.Wherein, according to HJ/T 399-2007《The measurement rapid-digestion spectrophotometry of water chemical oxygen demand》Inspection
Survey the COD (COD) in water；According to GB 13200-1991《The measurement of water turbidity》Detect the turbidity of water；According to
GB11894-89《The measurement alkaline chitinase of water quality total nitrogen clears up ultraviolet spectrophotometry》Detect total nitrogen (TN) in water；According to
GB 11893-89《The measurement ammonium molybdate spectrophotometric method of water quality total phosphorus》Detect total phosphorus (TP) in water；According to HJ 535-2009
《The measurement Berthelot spectrophotometry of Water quality ammonia nitrogen》Detect ammonia nitrogen (NH in water4 +-N)；According to HJ/T 346-2007《Water quality
Nitrate measures ultraviolet spectrophotometry》Detect nitrate nitrogen (NO in water3 --N)；According to GB 7493-87《Water quality nitrite
Measurement spectrophotometry》Detect water Nitrite Nitrogen (NO2 --N)；The measurement of oxygen in water uses the septum electrode of Hash
Method detects oxygen in water (DO).
Water-quality determination result before and after 1 sewage water of table and sewage disposal
It was found from the water-quality determination result of table 1：Intensified denitrification and dephosphorization device processing municipal wastewater water outlet using the present invention,
Removal effect is notable, remove ammonia nitrogen, denitrogenation, phosphor-removing effect are apparent, ammonia nitrogen removal frank can 97%, nitrate removal rate can reach
88.75% or more；Nitrogen removal rate is 91.1% or more；Total tp removal rate is 95.5% or more, and water outlet pH is maintained essentially in
6.84-6.92。
And hydraulic detention time is appropriately extended, minimum water outlet TN, TP a concentration of 0.76mg/L, the 0.04mg/ that can be obtained
L, denitrogenation dephosphorizing efficiency respectively reach 93.4%, 96.1%.
Embodiment 1A
It is 4h, system fortune in addition to controlling the hydraulic detention time of sewage in the device in step 3) denitrogenation dephosphorizing processing step
Temperature is maintained 25-30 DEG C during row, and inlet flow-patterm maintains essentially in 7.3-7.6, and DO maintains essentially between 1.8-2.2 it
Outside, remaining is same as Example 1.
Embodiment 2
1, tank body is loaded
It is same as Example 1.
2, biofilm is handled
2-1), after concentrating the anaerobic activated sludge of municipal sewage plant and aerobic activated sludge respectively, concentration is made
Activated sludge, wherein a concentration of 18000-20000mg/L of MLSS (preferably 19000mg/L) of concentration activated sludge；
Anaerobic activated sludge 2-2) is injected to tank body lower part packing area, aerobic activated sludge is injected until will in top packing area
Packing layer is totally submerged, and then opens aerator, and is controlled aeration quantity and be 1L/min (being usually 1-2L/min) and then impregnate again
Handle 1.5h (being usually 1-2h)；
2-3) impregnate and then by sewage of the C/N of sewage treatment plant than≤2 from the tank body top of apparatus of the present invention into
The mouth of a river is injected, and flow flows through top packing area, supporting layer, lower part packing area to be lower to stream, into after effluent trough, by water outlet
The overflow port on slot top flows out, while adjusting aeration quantity, and control gas-water ratio is 1:1 (is usually 1-5:1), by adjusting water inlet
Amount, control hydraulic detention time are 5h (being usually 4-6h), continuous operation 15 days (usually can also be 10-20 days), until going out
Water quality stabilizing is to get sewage water intensification denitrification dephosphorization apparatus of the present invention.
Select the aerobic activated sludge of municipal sewage plant for Changge City of Henan Province in the specific embodiment of the invention
The activated sludge that Carrousel oxidation ditch flows back in municipal sewage plant
The aerobic activated sludge of the present invention is with the Carrousel oxidation ditch out of Changge City of Henan Province municipal sewage plant
It is illustrated for the activated sludge of reflux, a concentration of 3000-6000mg/L of MLSS；A concentration of 3000- of other MLSS
Aerobic activated sludge, the reflux aerobic activated sludge of the municipal sewage plant of 6000mg/L are suitable for the present invention.The present invention
Anaerobic activated sludge to be chosen from Up-flow Anaerobic Sludge Bed, a concentration of 3000-6000mg/L of MLSS, except this it
Outside, the anaerobic sludge of a concentration of 3000-6000mg/L of other MLSS is suitable for the present invention.
The daily monitoring device effluent quality in biofilm processing procedure, detect COD, total nitrogen and the ammonia nitrogen of water outlet, total phosphorus,
The average value of nitrate nitrogen, nitrite nitrogen concentration calculates corresponding removal rate, and the effluent quality of apparatus of the present invention maintains to stablize, dirty
The nitrogen removal rate of water reaches and is maintained at 80% or more, and total tp removal rate reaches and is stored in 85% or more, keeps stablizing, this
The sewage water intensification denitrification dephosphorization apparatus structure of invention is completed.
3, denitrogenation dephosphorizing is handled
It is same as Example 1.
After the processing of denitrification dephosphorization apparatus of the present invention, effluent quality (COD, nitrate, ammonia nitrogen, total phosphorus) measures sewage
As a result be shown in Table 2.
Water-quality determination result before and after 2 sewage water of table and sewage disposal
Embodiment 2A
It is 3.5h, system in addition to controlling the hydraulic detention time of sewage in the device in step 3) denitrogenation dephosphorizing processing step
Temperature is maintained 25-30 DEG C in operational process, and inlet flow-patterm maintains essentially in 7.3-7.6, and DO maintains essentially between 1.8-2.2 it
Outside, remaining is same as Example 2.
Embodiment 3
1, tank body is loaded
As shown in Figure 1, the tank body of the denitrification dephosphorization apparatus of the present invention is cuboid, gas vent is arranged in the top of body；In tank
From top to bottom it is divided into top packing area, bearing area, lower part packing area successively in vivo.
Wherein, the height of the tank interior of denitrogenation dephosphorizing tank is 100cm, and upper part packing area height is 40cm, interior filling
The grain size of zeolite and limestone particle, zeolite and lime stone is 4-8mm；The Volume fraction of zeolite and lime stone is 3:0.75；
The porosity of filler is 30%；The height of lower part packing area is 55cm, interior to load troilite particle, corn cob granule, wherein
The grain size of troilite is 4-8mm, the grain size of corn cob granule is 6-10mm, wherein troilite, corncob Volume fraction be
1：1；The porosity of filler is 35% in packing area；Supporting layer is the glass steel material plate that height is 10cm, is had from top to bottom
Through-hole, the height of bearing area is 5cm；Sewage flows through supporting layer and lower part packing area by top packing area, then along going out
Sink flows out.The top of tank body is equipped with gas vent, and effect is the gas that aerator is discharged and generates.
2, biofilm is handled
It is same as Example 1.
3, denitrogenation dephosphorizing is handled
Other than hydraulic detention time is 2h, remaining is same as Example 1.
After the processing of denitrification dephosphorization apparatus of the present invention, effluent quality (COD, nitrate, ammonia nitrogen, total phosphorus) measures sewage
As a result be shown in Table 3.
Water-quality determination result before and after 3 sewage water of table and sewage disposal
Embodiment 3A
1, tank body is loaded
It is same as Example 3.
2, biofilm is handled
It is identical as the step 2 of embodiment 2, biofilm processing.
3, denitrogenation dephosphorizing is handled
In addition to control sewage hydraulic detention time in the device is 2.5h, temperature is maintained 25- in system operation
30 DEG C, inlet flow-patterm maintains essentially in 7.3-7.6, and except DO is maintained essentially between 1.8-2.2, remaining is same as Example 3.
After the processing of denitrification dephosphorization apparatus of the present invention, effluent quality (COD, nitrate, ammonia nitrogen, total phosphorus) measures sewage
As a result be shown in Table 3.
Claims (10)
1. a kind of method of structure sewage water denitrification dephosphorization apparatus, characterized in that include the steps that following sequence carries out：
1) tank body filling is handled
Denitrification dephosphorization apparatus includes the denitrogenation dephosphorizing tank placed vertically, be arranged tank wall and with tank wall integrally connected
Effluent trough and the aerator in tank wall middle and upper part is set, wherein set gradually from the bottom to top in tank body lower part packing area,
Bearing area, top packing area, and top filler, lower part filler are loaded respectively in upper and lower part packing area, top is formed from top to bottom
Packing layer, supporting layer and lower part packing layer；The upper surface of bearing area is uniformly arranged aeration tube, and aerator is with setting on bearing area
The aeration tube on surface is connected；
2) biofilm is handled
Sewage is injected from the top of denitrogenation dephosphorizing tank, flow passes through upper packing layers, supporting layer and lower part successively to flowing down
Packing layer, the side wall from tank body lower part close to bottom flows out, and opens aerator, carries out the Biofilm Colonization processing of device, directly
It maintains to stablize to device exhalant region effluent quality, the nitrogen removal rate of sewage reaches and is maintained at 80% or more, and total phosphorus ligands
Rate reaches and saves as 85% or more to get sewage denitrification and dephosphorization processing unit.
2. a kind of method of structure sewage water denitrification dephosphorization apparatus, characterized in that include the steps that following sequence carries out：
1) tank body filling is handled
Denitrification dephosphorization apparatus includes the denitrogenation dephosphorizing tank placed vertically, be arranged tank wall and with tank wall integrally connected
Effluent trough and the aerator in tank wall middle and upper part is set, wherein set gradually from the bottom to top in tank body lower part packing area,
Bearing area, top packing area, and top filler, lower part filler are loaded respectively in upper and lower part packing area, top is formed from top to bottom
Packing layer, supporting layer and lower part packing layer；The upper surface of bearing area is uniformly arranged aeration tube, and aerator is with setting on bearing area
The aeration tube on surface is connected；
2) biofilm is handled
Anaerobic activated sludge is injected into the lower part packing layer of tank body lower part and submerges lower part filler；By aerobic activated sludge be perfused to
The upper packing layers on tank body top simultaneously submerge top filler；Activated sludge impregnates top, lower part filler and then introduces sewage
The water inlet on device tank body top, to stream under flow, successively by top packing area, supporting layer, lower part packing area, under tank body
Side wall of the portion close to bottom flows out, and opens aerator, the Biofilm Colonization processing of device is carried out, until device exhalant region is discharged
Water quality maintains to stablize, and the nitrogen removal rate of sewage reaches and is maintained at 80% or more, and total tp removal rate reaches and saves as
85% or more to get sewage denitrification and dephosphorization processing unit.
3. construction method as claimed in claim 1 or 2, characterized in that lower part packing area described in step 1) and the tank body
The ratio between volume be 50-60：100；The ratio between the bearing area and the volume of the tank body are 5-10：100；The top packing area
It is 30-40 with the ratio between the volume of the tank body：100.
4. construction method as claimed in claim 1 or 2, characterized in that the top with denitrogenation dephosphorizing described in step 1) is filled out
Expect that the filler in area is：Zeolite and lime stone；The filler of lower part packing area with denitrogenation dephosphorizing is：Troilite particle, corncob
Particle.
5. construction method as claimed in claim 4, characterized in that the zeolite of the top packing area and the ratio between the volume of lime stone
It is 3：(0.5-1)；The ratio between the troilite particle of the lower part packing area and the volume of corn cob granule are 1：(0.5-1).
6. construction method as described in claim 1, characterized in that control waterpower in biofilm processing procedure described in step 2) and stop
It is 4-6h to stay the time.
7. construction method as claimed in claim 2, characterized in that control waterpower in biofilm processing procedure described in step 2) and stop
It is 4-6h to stay the time.
8. a kind of sewage water intensification denitrification dephosphorization processing unit, characterized in that built according to any the methods of such as claim 1-7
It forms.
9. a kind of sewage water intensification denitrification dephosphorization treatment method, characterized in that including by low C/N than sewage transport to such as claim
In sewage denitrification and dephosphorization processing unit described in 8, control flow flows downward, hydraulic detention time >=2h.
10. intensified denitrification and dephosphorization processing method as claimed in claim 9, characterized in that be delivered to intensified denitrification and dephosphorization device
In sewage disposal temperature at 10-35 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110921811A (en) * | 2019-11-29 | 2020-03-27 | 南京华创环境技术研究院有限公司 | Modified volcanic rock filler and preparation method and application thereof |
| CN115594330A (en) * | 2022-09-16 | 2023-01-13 | 同济大学（Cn） | Direct-discharge type sewage treatment system for enhancing treatment efficiency of domestic sewage with low carbon-nitrogen ratio |
| CN116199338A (en) * | 2022-12-29 | 2023-06-02 | 浙江清华长三角研究院 | Advanced denitrification and dephosphorization module and method for rural domestic sewage household facility |
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