CN109293164A - A kind of method of sewage deep denitrogenation dephosphorizing - Google Patents
A kind of method of sewage deep denitrogenation dephosphorizing Download PDFInfo
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- CN109293164A CN109293164A CN201811329793.6A CN201811329793A CN109293164A CN 109293164 A CN109293164 A CN 109293164A CN 201811329793 A CN201811329793 A CN 201811329793A CN 109293164 A CN109293164 A CN 109293164A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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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
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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
- C02F3/28—Anaerobic digestion processes
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
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Abstract
The present invention provides a kind of methods of sewage deep denitrogenation dephosphorizing, including step (1) after pre-treatment, inflow ozone oxidation pond is discharged to be handled, the ozone oxidation pond includes ozone oxidation agent, and refractory organic is oxidized to easily biodegradable organics in the ozone oxidation pond；(2) it behind the ozone oxidation pond, is discharged inflow biological activated carbon filter and is handled, the biological activated carbon filter includes active carbon and the biomembrane being attached on activated carbon surface；And (3), after biological activated carbon filter processing, water outlet flows into autotrophic denitrification filter tank, and the filler in the autotrophic denitrification filter tank contains dolomite and elemental sulfur, through treated in autotrophic denitrification filter tank Chinese effluent.Nitrogen and phosphorus and reduction COD content of the method for sewage deep denitrogenation dephosphorizing of the invention on the basis of preceding processing, in removal sewage that can be more efficient.
Description
Technical field
The present invention relates to technical field of sewage more particularly to a kind of methods of sewage deep denitrogenation dephosphorizing.
Background technique
Due to expanding economy, improvement of living standard, the quickening of urbanization process, the nutriments such as a large amount of N, P with
River enters lake, reservoir and ocean, causes the water eutrophication problem got worse.There is an urgent need to economically viable at present
Denitrification dephosphorization technique controls the input of exogenous N, P nutriment, reduces the concentration of N, P in the water bodys such as lake, reservoir, controls water
The process of body eutrophication.
Currently, gradually carrying out sewage treatment plant's upgrading in nationwide, it is de- that secondary effluent needs to carry out depth
It could be discharged after nitrogen dephosphorization processing.Currently, sewage is successively passed through anaerobic pond, anoxic pond, aerobic tank and secondary settling tank by general use
It is handled.Wherein, the reaction in anaerobic pond refers to microorganism (i.e. activated sludge) in the ring of low dissolved oxygen, low nitrate nitrogen concentration
Bioprocess under border discharges intracorporal phosphorus, the organic matter absorbed in water forms PHB to internal；Reaction in anoxic pond is
Refer to that microorganism carries out denitrification using organic matter and nitrate nitrogen, while by oxidation operation, by nitrate-nitrogen reduction at nitrogen；It is good
Oxygen pond is stirred and is oxygenated using aeration.Microorganism further removes organic matter, the ammonia nitrogen in water removal, together under aerobic conditions
When the concentration of phosphorus in water is further decreased by aerobic phosphorus absorption；Mixed liquor from aerobic tank is carried out precipitation and separation by secondary settling tank,
Supernatant carries out emission treatment as water outlet discharge, sludge.As Environmental protection requires to be increasingly stringenter, in order to eliminate
Black and odorous water controls water eutrophication, and nitrogen, phosphorus discharge standard will be improved increasingly in water outlet, but existing advanced nitrogen removes
Phosphorus technology is unable to satisfy the requirement of discharge standard.
Therefore, it is badly in need of efficient sewage denitrification and dephosphorization new technology.
Summary of the invention
The object of the present invention is to provide a kind of method of sewage deep denitrogenation dephosphorizing, in removal sewage that can be more efficient
Nitrogen and phosphorus and reduction COD content.
To achieve the above object, the present invention provides a kind of methods of sewage deep denitrogenation dephosphorizing, comprising steps of
(1) it after pre-treatment, is discharged inflow ozone oxidation pond and is handled, the ozone oxidation pond includes ozone oxygen
Refractory organic is oxidized to easily biodegradable organics in the ozone oxidation pond by agent；
(2) it behind the ozone oxidation pond, is discharged inflow biological activated carbon filter and is handled, the bioactivity
Carbon filtering pool includes active carbon and the biomembrane being attached on activated carbon surface；And
(3) after biological activated carbon filter processing, water outlet flows into autotrophic denitrification filter tank, the autotrophic denitrification
Filler in filter tank contains dolomite and elemental sulfur, through treated in autotrophic denitrification filter tank Chinese effluent.
Compared with prior art, the method for sewage deep denitrogenation dephosphorizing of the invention, can be to dirt on the basis of preceding processing
Water carries out efficient denitrogenation dephosphorizing and reduces COD content.The water outlet of pre-treatment flows into ozone oxidation pond, and ozone oxidation pond includes smelly
Peroxygen oxidising agent carries out ozone strong oxidizing reaction under the action of ozone oxidation agent, changes macromolecular using the strong oxidizing property of ozone
The property and structure of organic matter, are oxidized to easily biodegradable organics for refractory organic；Also utilize the adsorptivity of active carbon
The biodegradation removal Organic substance in water for the biomembrane that can and be attached on activated carbon surface, reaches the mesh to purify water
's.Since the oxidability of ozone is extremely strong, ozone is added before active carbon filtering can kill bacterium, removal virus, oxidation water
Middle organic matter, the biodegradability for improving Organic substance in water, enhance the biological effect of activated carbon adsorption, are conducive to active carbon to organic
The removal of object can also extend the regeneration period of active carbon.Especially in autotrophic denitrification filter tank, elemental sulfur is conducive to autotrophy
Denitrifying microorganism is by the NO in water3 -- N is converted into nitrogen, utilizes the PO in Ca, Mg removal sewage in dolomite4 3-, with reality
Existing synchronous denitrification dephosphorizing (with specific reference to formula 1 and formula 2).Wherein, elemental sulfur belongs to the by-product during petroleum generates, therefore,
Significantly reduce the cost of wastewater treatment.More demanding to basicity during sulphur autotrophic denitrification, easy consumption basicity is high
Basicity consumption rate will increase the cost of operation.The reason is that faintly acid is generally presented in water outlet pH, when pH is too low, nitrous will result in
The accumulation of nitrogen, influences effluent quality.When pH value is lower than 5.5, denitrification rate just will receive serious inhibition.The application utilizes
Source of the lime stone as alkali, can be avoided the problem, be not necessarily to exogenously added alkali, so cost can be reduced.Dolomite can also be reaction
Carbon source is provided, so there is no need to additional carbons.Filler only needs dolomite and elemental sulfur, not only simple process and at low cost.It is especially white
The functional microorganism of marble and elemental sulfur synchronous denitrification dephosphorizing is mainly autotrophic denitrification bacterium, and microorganism growth is slower, substantially not
There are filter tank cloggings, therefore, after containing the processing of the sulphur autotrophic denitrification filter tank of dolomite and elemental sulfur synchronous denitrification dephosphorizing
Water outlet in without superfluous organic matter there are a possibility that, sludge yield can be reduced.
The principle of elemental sulfur and dolomite synchronous denitrification dephosphorizing such as formula 1 and formula 2:
Formula 1:
Formula 2:
In the method for sewage deep denitrogenation dephosphorizing of the present invention, the hydraulic detention time in ozone oxidation pond is 10~40min, than
If the hydraulic detention time in ozone oxidation pond is 10min, 20min, 30min, 40min；The hydraulic retention of biological activated carbon filter
Time be 10~60min, such as biological activated carbon filter hydraulic detention time be 10min, 20min, 30min, 40min,
50min,60min；Hydraulic detention time is waterpower in 60~150min, such as autotrophic denitrification filter tank in autotrophic denitrification filter tank
Residence time is 60min, 80min, 100min, 120min, 150min.
Preferably, active carbon is column charcoal, spherical activated charcoal and broken charcoal.Preferably column charcoal and broken charcoal, absorption
Effect is preferable.
Preferably, partial size≤1.5mm of column charcoal, for example, the partial size of column charcoal is 1.0mm, 1.2mm, 1.3mm,
1.4mm,1.5mm.And column charcoal of the partial size greater than 1.5mm will affect treatment effect since gap is too big between filtrate.
Preferably, the partial size of broken charcoal is 12 × 40 mesh, since its partial size is smaller, the gap of carbon granule is with regard to smaller, active carbon
Substance in easier absorption water, high treating effect.
Preferably, biological activated carbon filter further includes aerator, aeration dissolved oxygen control is 2~4mg/L.Pass through aeration
The effect of device and biological activated carbon converts NO3-N and NO2-N for the ammonia nitrogen nitre in sewage, more effectively goes to decontaminate
Organic matter and ammonia nitrogen in water.
Preferably, pre-treatment includes sequentially connected anaerobic pond, mud-water separation pond, anoxic pond, aerobic tank and secondary settling tank, go back
It is provided with dephosphorization pond and nitrification tank, the supernatant of mud-water separation pond separation flows into dephosphorization pond, flows into nitrification after the processing of dephosphorization pond
Pond flows into anoxic pond after nitrification tank is handled, and the sludge of mud-water separation pond separation flows into anoxic pond, and anaerobic pond is provided with into water
Mouthful, secondary settling tank is provided with sludge outlet, and the water outlet of secondary settling tank flows into ozone oxidation pond.In nitrification tank by aeration realize oxygenation with
Mixing, microorganism aoxidize the ammonia nitrogen in water under aerobic environment, generate nitrate nitrogen.Certainly, in order to strengthen nitration reaction, also
Biologic packing material can be installed additional in nitrification tank.Specifically, chemical dephosphorization medicament is added in dephosphorization pond and stirs, react, and is removed
Phosphorus processing, can increase substantially the dephosphorization ability of system.
Preferably, the filler of nitrification tank is one of gimp formula fiberfill, spherical suspending filling material, cord type filler.More
Preferably use filler of the gimp formula fiberfill as nitrification tank.The reason is that the head loss of gimp formula fiberfill is smaller,
It is more advantageous to the transformation for old sewage plant and saves the energy；There are also gimp formula fiberfill not to have to backwash, saves water
And automatic control investment；Especially gimp formula fiberfill large specific surface area, starting biofilm speed is fast, and voidage is high, and demoulding, which updates, to be held
Easily.
Preferably, the preparation in autotrophic denitrification filter tank, comprising:
(1) reactor is provided, dolomite and elemental sulfur are mixed according to a certain volume and are filled into the reactor；
(2) anoxic section sludge is added into reactor；
(3) continuum micromeehanics mode is used, domestication sewage is added can be with dolomite and simple substance by taming the domestication of sewage
The packed bed of sulphur combination is inoculated with, and autotrophic denitrification microbial bacteria is obtained；
(4) sewage to be processed is added into reactor, measures NO continuous 3 times3 -- N removal rate >=70%, then debugging at
Function obtains autotrophic denitrification filter tank, wherein tames sewage and sewage to be processed is same sewage.
Wherein, domestication sewage is seed sludge, the packed bed combined with dolomite and elemental sulfur to anoxic section sludge acclimatization
It is inoculated with, the autotrophic denitrification microbial bacteria obtained from just has effects that carry out denitrogenation dephosphorizing to sewage.It specifically can be with
It is to add sewage plant biochemical process anoxic section sludge to carry out domestication inoculation, initial operating stage hydraulic detention time is 2h, using continuous
Domestication sewage is added in water intake mode.
Preferably, the sludge age of anoxic section sludge is 30~60 days, for example sludge age is 30 days, 40 days, 50 days, 60 days.
Preferably, the partial size of dolomite of the present invention be 1mm~10mm, such as dolomite partial size be 1mm~4mm, 4mm~
6mm, 6mm~10mm, the preferably partial size of dolomite are 4mm~6mm；The partial size of elemental sulfur is 1mm~10mm, such as elemental sulfur
Partial size be 1mm~3mm, 3mm~5mm, 5mm~10mm, wherein the partial size of preferably elemental sulfur be 3mm~5mm.
Detailed description of the invention
The process flow chart of the sewage deep denitrogenation dephosphorizing of Fig. 1 the application.
Specific embodiment
The technical scheme of the invention is further explained by means of specific implementation, but does not constitute and appoint to of the invention
What is limited.
Referring to FIG. 1, the process flow chart of the sewage deep denitrogenation dephosphorizing of the application, sewage after pre-treatment, then according to
It is secondary to be handled by ozone oxidation pond, biological activated carbon filter and autotrophic denitrification filter tank, then emit.
Specifically, pre-treatment includes sequentially connected anaerobic pond, mud-water separation pond, anoxic pond, aerobic tank and secondary settling tank, is gone back
It is provided with dephosphorization pond and nitrification tank, sewage to be processed enters anaerobic pond, and mud-water separation pond, muddy water are flowed into after anaerobic pond is handled
The supernatant of separate tank separation flows into dephosphorization pond, flows into nitrification tank after the processing of dephosphorization pond, flows into anoxic after nitrification tank is handled
The sludge in pond, the separation of mud-water separation pond flows into anoxic pond, flows into secondary settling tank after anoxic pond is handled, flows into after secondary settling tank is handled
Ozone oxidation pond.In the present embodiment, secondary settling tank is provided with sludge outlet, and secondary settling tank treated sludge is discharged.Certainly may be used also
Be not specifically limited herein using the pre-treatment of other way.
Wherein, (1) is discharged inflow ozone oxidation pond and is handled, ozone oxidation pond includes ozone after pre-treatment
Refractory organic is oxidized to easily biodegradable organics in ozone oxidation pond, to improve the removal of COD of sewage by oxidant
Rate；
(2) it behind ozone oxidation pond, is discharged inflow biological activated carbon filter and is handled, biological activated carbon filter packet
Containing active carbon and the biomembrane being attached on activated carbon surface；And
(3) it after biological activated carbon filter is handled, is discharged and flows into autotrophic denitrification filter tank, in autotrophic denitrification filter tank
Filler contains dolomite and elemental sulfur, through treated in autotrophic denitrification filter tank Chinese effluent.
Wherein, in the application autotrophic denitrification filter tank preparation, specifically include:
(1) reactor is provided, dolomite and elemental sulfur are mixed by 1:1 volume ratio and are filled into reactor；
(2) sewage plant biochemical process anoxic section sludge is added into reactor and carries out domestication inoculation；
(3) continuum micromeehanics mode is used, domestication sewage is added can be with dolomite and simple substance by taming the domestication of sewage
The packed bed of sulphur combination is inoculated with, and autotrophic denitrification microbial bacteria is obtained；
(4) sewage to be processed is added into reactor, measures NO continuous 3 times3 -- N removal rate >=70%, then debugging at
Function obtains autotrophic denitrification filter tank, wherein domestication sewage and sewage to be processed are same sewage.
Below by specific embodiment, the present invention is further explained.
Embodiment 1
Sewage is derived from Pingshan area of Shenzhen Jin Lianlu sewage treatment Pilot Base, and sewage flows into anaerobic pond through water inlet, warp
After anaerobic pond processing, water outlet flows into mud-water separation pond, and the supernatant dephosphorization pond of mud-water separation pond separation is flowed after the processing of dephosphorization pond
Enter nitrification tank, anoxic pond is flowed into after nitrification tank is handled, the sludge of mud-water separation pond separation flows into anoxic pond, handles through anoxic pond
Afterwards, water outlet flows into aerobic tank, and after aerobic tank is handled, water outlet flows into secondary settling tank, and sludge a part of secondary settling tank flows into anaerobic pond,
Remaining sludge is discharged from sludge outlet, and the water outlet of secondary settling tank flows into ozone oxidation pond, after the processing of ozone oxidation pond, water flow out
Enter biological activated carbon filter, after biological activated carbon filter is handled, water outlet flows into autotrophic denitrification filter tank, filters through autotrophic denitrification
It is discharged after the processing of pond.
Wherein, active carbon uses ZJ-15 type active carbon, belongs to column charcoal, partial size 1.5mm.Using gimp formula fiber
Filler of the filler as nitrification tank.
Hydraulic detention time is respectively as follows: anaerobic pond 2h, mud-water separation pond 40min, dephosphorization pond 2h, nitrification tank 9.8h, anoxic
Pond 3h, aerobic tank 3.4h, secondary settling tank 2h, ozone oxidation pond 20min, biological activated carbon filter 30min, autotrophic denitrification filter tank
120min.The flow of mud-water separation supernatant is 1.2m3/h。
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 5.0mg/L, and the mean concentration for being discharged TN is
0.8mg/L is discharged the mean concentration of TP lower than 0.1mg/L, is better than surface water IV class standard.
Test method is as follows: the concentration determination of COD uses dichromate titration；The concentration of TN uses potassium peroxydisulfate oxygen
Change-ultraviolet spectrophotometry；The concentration determination of TP uses molybdenum-antimony anti-spectrophotometric method.
Embodiment 2
The embodiment 2 and 1 processing method of embodiment are essentially identical, the difference lies in that being filled out in embodiment 2 using spherical suspending
Expect the filler as nitrification tank, and uses filler of the gimp formula fiberfill as nitrification tank in embodiment 1.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 5.0mg/L, and the mean concentration for being discharged TN is
1.5mg/L is discharged the mean concentration of TP lower than 0.1mg/L, is better than surface water IV class standard.
Embodiment 3
The embodiment 3 and 1 processing method of embodiment are essentially identical, the difference lies in that nitrification tank not fill out by use in embodiment 3
Material, and filler of the gimp formula fiberfill as nitrification tank is used in embodiment 1.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 5.6mg/L, and the mean concentration for being discharged TN is
1.8mg/L is discharged the mean concentration of TP lower than 0.1mg/L, is better than surface water IV class standard.
Comparative example 1
The comparative example 1 and 1 processing method of embodiment are essentially identical, and difference is to lack ozone oxidation pond, life in comparative example 1
Object activated carbon filter and autotrophic denitrification filter tank technique.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 38.0mg/L, and the mean concentration for being discharged TN is
4mg/L, the mean concentration for being discharged TP is 0.3mg/L.COD comparision contents are high in the comparative example, are not inconsistent surface water IV class standard.
Comparative example 2
The comparative example 2 and the processing method of embodiment 1 are essentially identical, and difference is to lack autotrophic denitrification in comparative example 2
Filter tank technique.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 5.0mg/L, and the mean concentration for being discharged TN is
3.0mg/L, the mean concentration for being discharged TP is 0.2mg/L.
Comparative example 3
The comparative example 3 is substantially the same manner as Example 1, and difference is to lack ozone oxidation pool process in comparative example 3.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 20.0mg/L, and the mean concentration for being discharged TN is
1.2mg/L, the mean concentration for being discharged TP is 0.2mg/L.COD comparision contents are high in the comparative example, are not inconsistent surface water IV class standard.
Comparative example 4
The comparative example 4 is substantially the same manner as Example 1, and difference is to lack biological activated carbon filter technique in comparative example 4.
Monitoring data are as follows: the concentration of influent COD is 206~500mg/L, and the concentration for TN of intaking is 30.0~38.0mg/
The concentration of L, TP of intaking are 3.1~4.3mg/L, and the mean concentration for being discharged COD is 30.0mg/L, and the mean concentration for being discharged TN is
1.5mg/L, the mean concentration for being discharged TP is 0.2mg/L.COD comparision contents are high in the comparative example, are not inconsistent surface water IV class standard.
From the test result of Examples 1 to 3 and comparative example 1~4 it is found that using the application sewage deep denitrogenation dephosphorizing side
Method is discharged the concentration of COD, is discharged the concentration of TN, the concentration for being discharged TP can reach even better than earth's surface after sewage treatment
Water IV class standard.The reason is that ozone oxidation pond includes ozone oxidation agent in the method for sewage deep denitrogenation dephosphorizing of the invention,
Ozone strong oxidizing reaction is carried out under the action of ozone oxidation agent, changes the property of larger molecular organics using the strong oxidizing property of ozone
And structure；Also removed using the biodegradation of the absorption property of active carbon and the biomembrane being attached on activated carbon surface
Organic substance in water reaches purpose of purifying the water quality.Since the oxidability of ozone is extremely strong, adding ozone before active carbon filtering can
To kill bacterium, removal virus, oxidation Organic substance in water, the biodegradability for improving Organic substance in water, enhance activated carbon adsorption
Biological effect is conducive to the removal of Active Carbon in Organic, can also extend the regeneration period of active carbon.It is especially anti-in autotrophy
It nitrifies in filter tank, elemental sulfur is conducive to autotrophic denitrification microorganism for the NO in water3 -- N is converted into nitrogen, using in dolomite
Ca, Mg remove the PO in sewage4 3-, to realize synchronous denitrification dephosphorizing (with specific reference to formula 1 and formula 2).Therefore can be more efficient removal
Nitrogen and phosphorus and reduction COD content in sewage.
Embodiment 1 and embodiment 2 compare, and the mean concentration that TN is discharged in embodiment 1 is lower, it may be possible to which embodiment 1 uses pigtail
Filler of the belt fiberfill as nitrification tank.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than protects to the present invention
The limitation of range is protected, although the present invention is described in detail referring to preferred embodiment, the invention is not limited to above
Revealed embodiment, and various modifications, equivalent combinations according to the essence of the present invention should be covered.
Claims (10)
1. a kind of method of sewage deep denitrogenation dephosphorizing, which is characterized in that comprising steps of
(1) it after pre-treatment, is discharged inflow ozone oxidation pond and is handled, the ozone oxidation pond includes ozone oxidation
Refractory organic is oxidized to easily biodegradable organics in the ozone oxidation pond by agent；
(2) it behind the ozone oxidation pond, is discharged inflow biological activated carbon filter and is handled, the bioactivity carbon filtration
Pond includes active carbon and the biomembrane being attached on activated carbon surface；
(3) after biological activated carbon filter processing, water outlet flows into autotrophic denitrification filter tank, the autotrophic denitrification filter tank
In filler contain dolomite and elemental sulfur, through treated in autotrophic denitrification filter tank Chinese effluent.
2. the method for sewage deep denitrogenation dephosphorizing as described in claim 1, which is characterized in that the active carbon be column charcoal,
Spherical activated charcoal and broken charcoal.
3. the method for sewage deep denitrogenation dephosphorizing as claimed in claim 2, which is characterized in that the partial size of the column charcoal≤
1.5mm。
4. the method for sewage deep denitrogenation dephosphorizing as claimed in claim 2, which is characterized in that the partial size of the broken charcoal is 12
× 40 mesh.
5. the method for sewage deep denitrogenation dephosphorizing as described in claim 1, which is characterized in that the biological activated carbon filter is also
Including aerator, being aerated dissolved oxygen control is 2~4mg/L.
6. the method for sewage deep denitrogenation dephosphorizing as described in claim 1, which is characterized in that the pre-treatment includes successively connecting
Anaerobic pond, mud-water separation pond, anoxic pond, aerobic tank and the secondary settling tank connect, is additionally provided with dephosphorization pond and nitrification tank, dirt to be processed
Water enters the anaerobic pond, and the mud-water separation pond is flowed into after anaerobic pond processing, and the mud-water separation pond separates upper
Clear liquid flows into the dephosphorization pond, flows into the nitrification tank after the processing of the dephosphorization pond, flows into institute after nitrification tank processing
Anoxic pond is stated, the sludge of the mud-water separation pond separation flows into the anoxic pond, flows into described two after anoxic pond processing
Heavy pond flows into the ozone oxidation pond after secondary settling tank processing.
7. the method for sewage deep denitrogenation dephosphorizing as claimed in claim 6, which is characterized in that the filler of the nitrification tank is pigtail
One of belt fiberfill, spherical suspending filling material, cord type filler.
8. the method for sewage deep denitrogenation dephosphorizing as described in claim 1, which is characterized in that the autotrophic denitrification filter tank
Preparation, comprising:
(1) reactor is provided, dolomite and elemental sulfur are mixed according to a certain volume and are filled into the reactor；
(2) anoxic section sludge is added into the reactor；
(3) use continuum micromeehanics mode, be added domestication sewage, by it is described domestication sewage domestication, can with the dolomite and
The packed bed of the elemental sulfur combination is inoculated with, and autotrophic denitrification microbial bacteria is obtained；
(4) sewage to be processed is added into the reactor, measures NO continuous 3 times3 -- N removal rate >=70%, then debugging at
Function obtains autotrophic denitrification filter tank, wherein the domestication sewage and the sewage to be processed are same sewage.
9. the method for sewage deep denitrogenation dephosphorizing as claimed in claim 8, which is characterized in that the sludge of the anoxic section sludge
Age is 30~60 days.
10. the method for sewage deep denitrogenation dephosphorizing as claimed in claim 8, which is characterized in that the partial size of the dolomite is
4mm~6mm, the partial size of the elemental sulfur are 3mm~5mm.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642460A (en) * | 2019-09-19 | 2020-01-03 | 济南大学 | Method for removing nitrogen and phosphorus by ferrate enhanced denitrification phosphorus removal biological filter |
| CN113354209A (en) * | 2021-06-22 | 2021-09-07 | 安徽中环环保科技股份有限公司 | Rural domestic sewage integrated advanced treatment device and sewage treatment method |
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