CN108793605A - A kind of quick short route sewage deep denitrification dephosphorization system and technique - Google Patents
A kind of quick short route sewage deep denitrification dephosphorization system and technique Download PDFInfo
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- CN108793605A CN108793605A CN201810689892.9A CN201810689892A CN108793605A CN 108793605 A CN108793605 A CN 108793605A CN 201810689892 A CN201810689892 A CN 201810689892A CN 108793605 A CN108793605 A CN 108793605A
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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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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- 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
- C02F2001/007—Processes including a sedimentation step
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- 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
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- 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
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1205—Particular type of activated sludge processes
- C02F3/1215—Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The present invention relates to a kind of quick short route sewage deep denitrification dephosphorization system and systems, including sequentially connected physical processing unit, biological processing unit and ammonia nitrogen absorption unit, the physical processing unit includes sequentially connected grid (1), setting pot (2), primary sedimentation tank (4)；The biological processing unit includes aerobic tank (5), blast aeration system (17), dosing dephosphorization system (6), secondary settling tank (7), sludge recirculation system and mud discharging system, the blast aeration system (17) and dosing dephosphorization system (6) is separately connected aerobic tank (5), aerobic tank (5) outlet connection secondary settling tank (7), secondary settling tank (7) return to aerobic tank (5) by sludge recirculation system；The ammonia nitrogen absorption unit includes adsorption column (9) and regenerative system connected to it and time controlled system.Compared with prior art, the present invention has many advantages, such as that floor space is small, cost of investment is low, outlet effect is good.
Description
Technical field
The invention belongs to environmental protection technical fields, are related to a kind of quick, short route coupled by materialization, biochemical method
Sewage deep denitrification dephosphorization system and technique.
Background technology
Currently, in addition to the watershed control of part, domestic existing urban wastewater treatment firm generally executes《Urban wastewater treatment firm is dirty
Contaminate object discharge standard》The two level and level-one B discharge standards of (GB 18918-2002).It is dirty further to improve surface water body water quality
Water treatment plant upgrades to level-one emission standard A one after another, and Chinese Ministry of Environmental Protection has also printed and distributed about revision《Urban wastewater treatment firm pollutant is arranged
Put standard》(exposure draft) has higher requirement to urban wastewater treatment firm effluent quality.In addition, the multiple provinces and cities in the whole nation,
Such as Beijing, Tianjin, Sichuan, improve urban wastewater treatment firm discharge standard, and new standard is close《Surface water environment quality
Standard》(GB 3838-2002) IV class water quality standards propose tightened up mark to water outlet COD, ammonia nitrogen, total nitrogen and total phosphorus etc.
It is accurate.
In this context, in order to realize that water stabilization is up to standard, sewage treatment plant generally carries out the processing of conventional two stage biological
Upgrading, to reach lower suspended matter, COD and nitrogen discharge and phosphorus discharge requirement.Currently, sewage treatment plant's upgrading is main right
Plan include extend hydraulic detention time (HRT), add filler increase biomass, newly-increased (synchronous or postposition) chemical dephosphorization facility,
Add filtering cloth filtering pool or coagulative precipitation tank, postposition additional carbon denitrification filter pool etc..It is existing in order to be promoted to level-one emission standard A
There is sewage treatment plant to usually require biological processing unit HRT being promoted to 18-24h by the 10-12h of AAO techniques, and in biological tank
Water outlet rear end increases coagulative precipitation tank and synchronizes oil removal and total phosphorus, is further added by denitrification filter pool after coagulating sedimentation water outlet, leads to
It crosses additional carbon and cuts down water outlet nitrate, and then achieve the purpose that control water outlet total nitrogen.The upgrading flow can be controlled effectively
It is discharged SS, total phosphorus and nitrate, but there is also problems with：(1) long HRT causes floor space significantly to increase, if
Land used then needs to reduce processing water first, and creates sewage treatment plant on periphery, the sewage treatment structure of upgrading and
Pipeline network construction investment increases considerably；(2) denitrification filter pool is effective to the water outlet total nitrogen that control nitrate accounting is high, but for the winter
Season low temperature or toxicant impact caused by water outlet ammonia nitrogen is exceeded and the high water outlet total nitrogen of ammonia nitrogen accounting is helpless；(3) it transports
It needs to add a large amount of coagulant and carbon source during row, operating cost is high, and denitrification filter pool once controls unfavorable, water outlet COD
It is easily exceeded.
Invention content
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of quick short route is dirty
Water depth denitrification dephosphorization system and technique.
The present invention will propose a kind of quick, short route sewage deep denitrogenation dephosphorizing by the coupling of materialization, biochemical technology
Technology can realize that effluent quality meets GB18918-2002 level-one A standards very under conditions of short HRT, low operating cost
To the requirement of surface water IV class standards.
The purpose of the present invention can be achieved through the following technical solutions：A kind of quick short route sewage deep denitrogenation dephosphorizing
System, which is characterized in that including sequentially connected physical processing unit, biological processing unit and ammonia nitrogen absorption unit,
Further, the physical processing unit includes sequentially connected grid (1), setting pot (2), primary sedimentation tank (4)；
Further, the biological processing unit includes aerobic tank (5), blast aeration system (17), dosing dephosphorization system
System (6), secondary settling tank (7), sludge recirculation system and mud discharging system, the blast aeration system (17) and dosing dephosphorization system
System (6) is separately connected aerobic tank (5), aerobic tank (5) outlet connection secondary settling tank (7), and secondary settling tank (7) is returned by sludge recirculation system
Aerobic tank (5) is returned, the mud discharging system connects secondary settling tank (7)；
Further, the ammonia nitrogen absorption unit includes adsorption column (9) and regenerative system connected to it and time control
System processed.
Further, the blast aeration system (17) includes air blower and aeration tube, by air blower by air through exposing
Tracheae is sent to aerobic tank (5).
Further, the dosing dephosphorization system (6) includes dosing tank, metering pump and chemical feed pipe, will be added by metering pump
Dephosphorization reagent in medicine-chest is sent through chemical feed pipe to aerobic tank (5) end.
Further, the secondary settling tank (7) includes secondary settling tank water inlet pipe, effluent weir and mud scraper (12), and described two
Heavy pond water inlet pipe connection aerobic tank (5), the effluent weir connect adsorption column (9), and the mud scraper (12) is inserted into secondary settling tank
(7) in.
Further, the sludge recirculation system includes reflux pump (13) and return duct, and two are sunk by reflux pump (13)
Pond (7) base sludge is sent through return duct to aerobic tank (5).
Further, the mud discharging system (14) includes sludge pump and sludge pipe, by sludge pump by secondary settling tank (7)
Bottom part sludge is discharged through sludge pipe.
Further, the adsorption column (9) includes water inlet, water outlet and overflow port (15), and fills ammonia nitrogen absorption
Material, and more adsorption columns are arranged in parallel, single adsorption column is transferred to regeneration stage after penetrating, water inlet switches to another adsorption column
It continues to run with.
Further, the regenerative system is made of regeneration liquid case (10) and regeneration pump (11), and regeneration liquid case (10) is logical
Cross regeneration pump (11) connection adsorption column (9)；
Further, the time controlled system carries out time control to absorption, regeneration stage.
Using the technique of the quick short route sewage deep denitrogenation dephosphorizing of the system, which is characterized in that include the following steps：
(1) sewage enters setting pot (2) after grid (1) retains coarseer floating material and suspended matter, is gone through setting pot (2)
After the larger inorganic particle of relative density in sewage, water outlet enters primary sedimentation tank (4) to remove most of suspended solid；
(2) primary sedimentation tank (4) water outlet enters in aerobic tank (5), is oxygenated to activated sludge using blast aeration system (17), and
It synchronizes and adds chemical dephosphorization medicament, the organic matter degradation in sewage is by the aerobic microbiological in aerobic tank (5) using dissolved oxygen
Carbon dioxide and water, and chemical agent can inhibit nitrification while dephosphorization, retain water inlet is brought and microbial hydrolytic
The ammonia nitrogen that organic nitrogen generates；Mud mixed liquid after reaction enters secondary settling tank (7), realizes be separated by solid-liquid separation under the effect of gravity, and two
Heavy pond (7) bottom part sludge is back to aerobic tank through reflux pump (13), and partial sludge is then discharged through mud discharging system；
(3) secondary clarifier effluent is then pumped into ammonia nitrogen absorption column (9), goes to decontaminate using the ammonia nitrogen absorption material in adsorption column (9)
Ammonia nitrogen in water, column (9) water outlet ammonia nitrogen to be adsorbed are transferred to regeneration stage when being required close to discharge standard；When adsorption column (9) regenerates,
Medicament in regeneration liquid case (10) is pumped into adsorption column (9) and carries out desorption and regeneration to sorbing material, and is by the mineralized nitrogen of desorption
Nitrogen, after the completion of the stage, adsorption column (9) is intake again, and regenerated liquid is back to regeneration liquid case (10).
Further, the primary sedimentation tank (4) HRT can be 0.1~10h.HRT contains according to suspended matter in handled sewage
Amount and settling character are adjusted, and for the sewage of Typical Towns, HRT is that 0.1~3.0h can be obtained good treatment effect.
Further, dissolved oxygen is 0.8~8mg/L in the aerobic tank (5), and HRT can be 0.5~10h.HRT
It is adjusted according to content of organics in handled sewage, for the sewage of Typical Towns, HRT can be obtained good for 0.5~3h
Treatment effect.
Further, the return sludge ratio of the sludge recirculation system be 10%~500%, and according to actual conditions into
Row is adjusted；
Further, the chemical dephosphorization medicament that the dosing dephosphorization system (6) adds selects calcium salt dephosphorization agent, microorganism
Flocculant dephosphorization agent, dephosphorization with ferric salt agent or aluminium salt dephosphorization agent, dosage are 5~1500mg/g SS；
Further, the secondary settling tank (7) HRT can be 0.5~10h.HRT according to sludge concentration and settling character into
Row adjustment, for the sewage of Typical Towns, HRT is 0.5~3h；It can be obtained good treatment effect.
Further, the grain size of the ammonia nitrogen absorption material is 1~10mm, and it is multiple with oxidant that regenerated liquid is selected as salt
Match；
Further, the ammonia nitrogen absorption material selection is activated carbon, molecular sieve, haydite, zeolite or amberlite
Fat；
Further, the salt in the regenerated liquid is selected as magnesium salts, sylvite, calcium salt, sodium salt, molysite, aluminium salt or zinc salt,
Its a concentration of 1~85g/L.
Further, the oxidant in the regenerated liquid is selected as hydrogen peroxide, perchlorate, permanganate, dichromic acid
Salt, sodium peroxide, hypochlorite, ozone or nitric acid.
Existing advanced nitrogen dephosphorization technique HRT is general>15h, technological process is tediously long, investment operating cost is high, uncontrollable
The defects of being discharged ammonia nitrogen provides a kind of completely new quick, short route sewage deep denitrogenation by materialization, the coupling of biochemical technology
Dephosphorization process technology.Present invention process can be less than prior art in total HRT less than 6h (containing primary sedimentation tank and secondary settling tank), operating cost
Under the premise of, realize that effluent quality meets GB18918-2002 level-ones A or even surface water IV class standards, small with floor space,
The feature that cost of investment is low, outlet effect is good.
Compared with prior art, the present invention has the following advantages：
(1) present invention has dexterously used the inhibiting effect for synchronizing chemical Dephosphorization reagent to nitrifying microorganisms, is efficiently removing
Effective retention of ammonia nitrogen is realized while phosphorus, and then utilizes subsequent ammonia nitrogen absorption pillar height effect removal ammonia nitrogen.
(2) compared with the traditional biological denitrification dephosphorization technique towards maximum discharge standard, although the present invention is additionally arranged ammonia nitrogen suction
Attached column, but reduce anaerobic pond, anoxic pond and nitrification liquid return-flow system, aerobic tank HRT is also greatly shortened；Change with typically mark is carried
It makes waste water processes to compare, reduces coagulative precipitation tank, denitrification filter pool and filler etc..This invention simplifies technological process,
Total HRT reduces 60-70% compared with traditional handicraft, and floor space is significantly reduced；
(3) feature that environmental condition is small to physical chemistry technique influence is made full use of, ammonia nitrogen is realized by process combination
With quick, the inexpensive removal of total phosphorus, winter low temperature stage ammonia nitrogen and the exceeded problem of total nitrogen are avoided, realizes that effluent quality is full
Sufficient GB18918-2002 level-ones A the standards even requirement of surface water IV class standards.
(4) it is added by the Dephosphorization reagent with coagulation, reduces the resistivity and CST of activated sludge, sludge dewatering
Performance is obviously improved compared with traditional activated sludge process.
Description of the drawings
Fig. 1 is the structural schematic diagram of the reactor of the present invention；
Fig. 2 is sewage treatment plant inflow of the present invention and water outlet COD (Fig. 2 a), total nitrogen (Fig. 2 b), ammonia nitrogen (Fig. 2 c) and total phosphorus
(Fig. 2 d) content schematic diagram；
Figure label：1 is grid, and 2 be setting pot, and 3 be primary sedimentation tank intake pump, and 4 be primary sedimentation tank, and 5 be aerobic tank, and 6 be to add
Medicine dephosphorization system, 7 be secondary settling tank, and 8 be adsorption column intake pump, and 9 be absorption column system, and 10 be regeneration liquid case, 11 for regenerated liquid into
Water pump, 12 be mud scraper, and 13 be reflux pump, and 14 be mud discharging system, and 15 be overflow port, and 16 be water outlet, and 17 expose for air blast
Gas system.
Specific implementation mode
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, a kind of quick short route sewage deep denitrification dephosphorization system, including sequentially connected physical treatment list
Member, biological processing unit and ammonia nitrogen absorption unit.
Wherein, the physical processing unit includes sequentially connected grid 1, setting pot 2, primary sedimentation tank 4, and in setting pot
Primary sedimentation tank intake pump 3 is set between 2 and primary sedimentation tank 4.
The biological processing unit includes aerobic tank 5, blast aeration system 17, dosing dephosphorization system 6, secondary settling tank 7, dirt
Mud return-flow system and mud discharging system 14, the blast aeration system 17 and dosing dephosphorization system 6 are separately connected aerobic tank
5, the outlet of aerobic tank 5 connection secondary settling tank 7, secondary settling tank 7 returns to aerobic tank 5, the mud discharging system by sludge recirculation system
System connection secondary settling tank 7；The blast aeration system 17 includes air blower and aeration tube, is sent air through aeration tube by air blower
To aerobic tank 5.The dosing dephosphorization system 6 includes dosing tank, metering pump and chemical feed pipe, by metering pump by removing in dosing tank
Phosphorus medicament is sent through chemical feed pipe to 5 end of aerobic tank.The secondary settling tank 7 includes secondary settling tank water inlet pipe, effluent weir and mud scraper 12,
The secondary settling tank water inlet pipe connects aerobic tank 5, and the effluent weir connects adsorption column 9, and it is heavy that the mud scraper 12 is inserted into two
In pond 7.The sludge recirculation system includes reflux pump 13 and return duct, is passed through back 7 base sludge of secondary settling tank by reflux pump 13
Flow tube is sent to aerobic tank 5.The mud discharging system 14 includes sludge pump and sludge pipe, by sludge pump by 7 bottom of secondary settling tank
Partial sludge is discharged through sludge pipe.
The ammonia nitrogen absorption unit includes adsorption column 9 and regenerative system connected to it and time controlled system.It is described
Adsorption column 9 include water inlet, water outlet 16 and overflow port 15, and fill ammonia nitrogen absorption material, and more adsorption columns are parallel sets
It sets, single adsorption column is transferred to regeneration stage after penetrating, water inlet switches to another adsorption column and continues to run with, the water outlet of secondary settling tank 7
Weir is connected to 9 water inlet of adsorption column by adsorption column intake pump 8, and the clean water after the absorption of adsorption column 9 is discharged from water outlet 16.
The regenerative system is made of regeneration liquid case 10 and regeneration pump 11, and regeneration liquid case 10 connects adsorption column 9 by regeneration pump 11；Institute
The time controlled system stated carries out time control to absorption, regeneration stage.
The method for carrying out advanced nitrogen dephosphorization to sewage using above system is as follows：
Sewage enters setting pot 2 after grid 1 retains coarseer floating material and suspended matter, is removed in sewage through setting pot 2
After the larger inorganic particle of relative density, water outlet enters primary sedimentation tank 4 to remove most of suspended solid.Primary sedimentation tank water outlet enters life
Object processing unit is oxygenated using blast aeration system 17 to activated sludge in aerobic tank 5, and it is synchronous by metering pump by dosing tank 6
In Dephosphorization reagent sent to 5 end of aerobic tank through chemical feed pipe.Aerobic microbiological in aerobic tank 5 will be in sewage using dissolved oxygen
Organic matter degradation is carbon dioxide and water, and chemical agent can inhibit nitrification while dephosphorization, retains what water inlet was brought
The ammonia nitrogen generated with microbial hydrolytic organic nitrogen；Mud mixed liquid after reaction enters secondary settling tank 7, realizes under the effect of gravity solid
Liquid detaches.7 bottom part sludge of secondary settling tank is back to aerobic tank through reflux pump 13, and partial sludge is then through 14 row of mud discharging system
Go out.Secondary clarifier effluent is then pumped into ammonia nitrogen absorption column 9, using the ammonia nitrogen in the ammonia nitrogen absorption material removal sewage in adsorption column 9, waits for
Adsorption column water outlet ammonia nitrogen is transferred to regeneration stage when being required close to discharge standard.When adsorption column 9 regenerates, the medicament in liquid case 10 is regenerated
It is pumped into adsorption column 9 and desorption and regeneration is carried out to sorbing material, and be nitrogen by the mineralized nitrogen of desorption.After the completion of the stage, absorption
Column 9 is intake again, and regenerated liquid is back to regeneration liquid case 10.Wherein, more of the need of adsorption column 9 are arranged in parallel, and single adsorption column penetrates
After be transferred to regeneration stage, water inlet switches to another adsorption column and continues to run with.
Embodiment 2
With reference to figure 1, certain sewage treatment plant's sewage enters setting pot 2 after grid 1 retains coarseer floating material and suspended matter,
After setting pot 2 removes the inorganic particle that relative density is larger in sewage, it is the first heavy of 1.5h that water outlet enters HRT through intake pump 3
Pond is to remove most of suspended solid in sewage.Primary sedimentation tank water outlet enter biological processing unit 3, HRT be 2.0h aerobic tank 5 by
It is 4~5mg/L that the oxygen supply of air blower 17, which keeps dissolved oxygen, realizes Organic Pollutants in Wastewater, activated sludge and dissolved oxygen three
It is sufficiently mixed contact.The Dephosphorization reagent alchlor in dosing tank 6 is sent through chemical feed pipe to 5 end of aerobic tank by metering pump simultaneously
End, continuously adds carry out chemical dephosphorization, and make full use of its depression effect to nitration reaction with the dosage of 80mg/g SS,
Realize effective retention of ammonia nitrogen in mixed liquor.Mud mixed liquid after reaction enters the secondary settling tank 7 that HRT is 2h, in gravity
Lower realization is separated by solid-liquid separation, and 7 bottom part sludge of secondary settling tank is back to aerobic tank (reflux ratio 0.5) through reflux pump 13, and part is dirty
Mud is then discharged through mud discharging system 14.Secondary clarifier effluent is pumped into the ammonia nitrogen absorption column 9 that HRT is 0.5h, using in adsorption column 9
Ammonia nitrogen absorption material removes the ammonia nitrogen in sewage, is discharged from the water outlet 16 at the top of adsorption column and flows out.Column to be adsorbed is discharged ammonia nitrogen
It is transferred to regeneration stage when being required close to discharge standard.Wherein, parallel provided with 3 due to adsorption column 9, when single adsorption column penetrates
After be transferred to regeneration stage, water inlet switches to another adsorption column and continues to run with.When adsorption column 9 regenerates, the chlorine in liquid case 10 is regenerated
The change composite regenerated liquid pump of sodium+sodium hypochlorite enters adsorption column 9 and carries out desorption and regeneration to sorbing material, and is by the mineralized nitrogen of desorption
Nitrogen.Wherein composite regenerated a concentration of 20g/L of liquid, regeneration soaking time are 40min.After the completion of the stage, adsorption column 9 again into
Water, regenerated liquid are back to regeneration liquid case 10.As shown in Fig. 2, sewage treatment plant inflow COD, total nitrogen, ammonia nitrogen and total phosphorus range
Respectively 212~296,24.50~33.93,22.34~27.73 and 2.02~2.86mg/L, water outlet range are respectively then
13.48~23.92,2.28~7.45,0.23~1.17 and 0.03~0.27mg/L, effluent quality can stably reach
GB18918-2002 level-one A standards, water outlet COD, ammonia nitrogen and total phosphorus are even up to the requirement of surface water IV class standards.
Embodiment 3
With reference to figure 1, a kind of quick short route sewage deep denitrification dephosphorization technique includes the following steps：
1, sewage enters setting pot 2 after grid 1 retains coarseer floating material and suspended matter, and sewage is removed through setting pot 2
After the larger inorganic particle of middle relative density, water outlet enters primary sedimentation tank 4 to remove most of suspended solid；Primary sedimentation tank 4HRT is
0.1h。
2, the water outlet of primary sedimentation tank 4 enters in aerobic tank 5, is oxygenated to activated sludge using blast aeration system 17, and synchronous throwing
Add chemical dephosphorization medicament, the organic matter degradation in sewage is carbon dioxide using dissolved oxygen by the aerobic microbiological in aerobic tank 5
And water, and chemical agent can inhibit nitrification while dephosphorization, retain water inlet is brought and microbial hydrolytic organic nitrogen production
Raw ammonia nitrogen；Mud mixed liquid after reaction enters secondary settling tank 7, realizes be separated by solid-liquid separation under the effect of gravity, 7 base portion of secondary settling tank
Sludge is divided to be back to aerobic tank through reflux pump 13, partial sludge is then discharged through mud discharging system；Dissolved oxygen is in aerobic tank 5
0.8mg/L, HRT 0.5h, return sludge ratio 10%, and be adjusted according to actual conditions；Dosing dephosphorization system 6 adds
Chemical dephosphorization medicament selection calcium salt dephosphorization agent, microbial flocculant dephosphorization agent, dephosphorization with ferric salt agent or aluminium salt dephosphorization agent, dosage
For 5mg/g SS；Secondary settling tank 7HRT is 0.5h；
3, secondary clarifier effluent is then pumped into ammonia nitrogen absorption column 9, using in the ammonia nitrogen absorption material removal sewage in adsorption column 9
Ammonia nitrogen, column 9 to be adsorbed are discharged when ammonia nitrogen is required close to discharge standard and are transferred to regeneration stage；When adsorption column 9 regenerates, liquid case 10 is regenerated
In medicament be pumped into adsorption column 9 to sorbing material carry out desorption and regeneration, and by the mineralized nitrogen of desorption be nitrogen, the stage complete
Afterwards, adsorption column 9 is intake again, and regenerated liquid is back to regeneration liquid case 10.
The grain size of the ammonia nitrogen absorption material is 1mm, and regenerated liquid is selected as salt and is compounded with oxidant；The ammonia nitrogen is inhaled
Enclosure material is selected as activated carbon；Salt in the regenerated liquid is selected as magnesium salts, a concentration of 1g/L.In the regenerated liquid
Oxidant is selected as hydrogen peroxide.
Through above-mentioned steps, treated that sewage effluent quality can stably reach GB18918-2002 level-one A standards, water outlet
COD, ammonia nitrogen and total phosphorus are even up to the requirement of surface water IV class standards.
Embodiment 4
With reference to figure 1, a kind of quick short route sewage deep denitrification dephosphorization technique includes the following steps：
1, sewage enters setting pot 2 after grid 1 retains coarseer floating material and suspended matter, and sewage is removed through setting pot 2
After the larger inorganic particle of middle relative density, water outlet enters primary sedimentation tank 4 to remove most of suspended solid；Primary sedimentation tank 4HRT is
3h。
2, the water outlet of primary sedimentation tank 4 enters in aerobic tank 5, is oxygenated to activated sludge using blast aeration system 17, and synchronous throwing
Add chemical dephosphorization medicament, the organic matter degradation in sewage is carbon dioxide using dissolved oxygen by the aerobic microbiological in aerobic tank 5
And water, and chemical agent can inhibit nitrification while dephosphorization, retain water inlet is brought and microbial hydrolytic organic nitrogen production
Raw ammonia nitrogen；Mud mixed liquid after reaction enters secondary settling tank 7, realizes be separated by solid-liquid separation under the effect of gravity, 7 base portion of secondary settling tank
Sludge is divided to be back to aerobic tank through reflux pump 13, partial sludge is then discharged through mud discharging system；Dissolved oxygen is in aerobic tank 5
6mg/L, HRT 10h, return sludge ratio 500%, and be adjusted according to actual conditions；What dosing dephosphorization system 6 added
Chemical dephosphorization medicament selection calcium salt dephosphorization agent, microbial flocculant dephosphorization agent, dephosphorization with ferric salt agent or aluminium salt dephosphorization agent, dosage are
1500mg/g SS；Secondary settling tank 7HRT is 3h；
3, secondary clarifier effluent is then pumped into ammonia nitrogen absorption column 9, using in the ammonia nitrogen absorption material removal sewage in adsorption column 9
Ammonia nitrogen, column 9 to be adsorbed are discharged when ammonia nitrogen is required close to discharge standard and are transferred to regeneration stage；When adsorption column 9 regenerates, liquid case 10 is regenerated
In medicament be pumped into adsorption column 9 to sorbing material carry out desorption and regeneration, and by the mineralized nitrogen of desorption be nitrogen, the stage complete
Afterwards, adsorption column 9 is intake again, and regenerated liquid is back to regeneration liquid case 10.
The grain size of the ammonia nitrogen absorption material is 10mm, and regenerated liquid is selected as salt and is compounded with oxidant；The ammonia nitrogen
Sorbing material is selected as ion exchange resin；Salt in the regenerated liquid is selected as zinc salt, a concentration of 85g/L.Described
Oxidant in regenerated liquid is selected as nitric acid.
Through above-mentioned steps, treated that sewage effluent quality can stably reach GB18918-2002 level-one A standards, water outlet
COD, ammonia nitrogen and total phosphorus are even up to the requirement of surface water IV class standards.
The above is only the citing of embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improve and become
Type also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of quick short route sewage deep denitrification dephosphorization system, which is characterized in that including sequentially connected physical treatment list
Member, biological processing unit and ammonia nitrogen absorption unit,
The physical processing unit includes sequentially connected grid (1), setting pot (2), primary sedimentation tank (4)；
The biological processing unit includes aerobic tank (5), blast aeration system (17), dosing dephosphorization system (6), secondary settling tank
(7), sludge recirculation system and mud discharging system, the blast aeration system (17) and dosing dephosphorization system (6) connect respectively
Aerobic tank (5), aerobic tank (5) outlet connection secondary settling tank (7) are connect, secondary settling tank (7) returns to aerobic tank by sludge recirculation system
(5), mud discharging system connection secondary settling tank (7)；
The ammonia nitrogen absorption unit includes adsorption column (9) and regenerative system connected to it and time controlled system.
2. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Blast aeration system (17) includes air blower and aeration tube, is sent air to aerobic tank (5) through aeration tube by air blower.
3. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Dosing dephosphorization system (6) includes dosing tank, metering pump and chemical feed pipe, by metering pump by the Dephosphorization reagent in dosing tank through chemical feed pipe
It send to aerobic tank (5) end.
4. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Secondary settling tank (7) includes secondary settling tank water inlet pipe, effluent weir and mud scraper (12), and the secondary settling tank water inlet pipe connects aerobic tank (5),
The effluent weir connection adsorption column (9), the mud scraper (12) are inserted into secondary settling tank (7).
5. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Sludge recirculation system includes reflux pump (13) and return duct, is sent secondary settling tank (7) base sludge through return duct by reflux pump (13)
To aerobic tank (5).
6. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Mud discharging system (14) includes sludge pump and sludge pipe, is arranged secondary settling tank (7) bottom part sludge through sludge pipe by sludge pump
Go out.
7. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Adsorption column (9) includes water inlet, water outlet and overflow port (15), and fills ammonia nitrogen absorption material, and more adsorption columns are parallel sets
It sets, single adsorption column is transferred to regeneration stage after penetrating, water inlet switches to another adsorption column and continues to run with.
8. a kind of quick short route sewage deep denitrification dephosphorization system according to claim 1, which is characterized in that described
Regenerative system is made of regeneration liquid case (10) and regeneration pump (11), and regeneration liquid case (10) connects adsorption column by regeneration pump (11)
(9)；
The time controlled system carries out time control to absorption, regeneration stage.
9. a kind of technique using the quick short route sewage deep denitrogenation dephosphorizing of system described in claim 1, which is characterized in that packet
Include following steps：
(1) sewage enters setting pot (2) after grid (1) retains coarseer floating material and suspended matter, goes to decontaminate through setting pot (2)
In water after the larger inorganic particle of relative density, water outlet enters primary sedimentation tank (4) to remove most of suspended solid；
(2) primary sedimentation tank (4) water outlet enters in aerobic tank (5), is oxygenated to activated sludge using blast aeration system (17), and synchronous
Chemical dephosphorization medicament is added, the organic matter degradation in sewage is dioxy using dissolved oxygen by the aerobic microbiological in aerobic tank (5)
Change carbon and water, and chemical agent can inhibit nitrification while dephosphorization, and it is organic to retain water inlet is brought and microbial hydrolytic
The ammonia nitrogen that nitrogen generates；Mud mixed liquid after reaction enters secondary settling tank (7), realizes be separated by solid-liquid separation under the effect of gravity, secondary settling tank
(7) bottom part sludge is back to aerobic tank through reflux pump (13), and partial sludge is then discharged through mud discharging system；
(3) secondary clarifier effluent is then pumped into ammonia nitrogen absorption column (9), using in the ammonia nitrogen absorption material removal sewage in adsorption column (9)
Ammonia nitrogen, column (9) to be adsorbed water outlet ammonia nitrogen is transferred to regeneration stage when being required close to discharge standard；When adsorption column (9) regenerates, regeneration
Medicament in liquid case (10) is pumped into adsorption column (9) and carries out desorption and regeneration to sorbing material, and is nitrogen by the mineralized nitrogen of desorption,
After the completion of the stage, adsorption column (9) is intake again, and regenerated liquid is back to regeneration liquid case (10).
10. a kind of technique of quick short route sewage deep denitrification dephosphorization system according to claim 1, feature exist
In the primary sedimentation tank (4) hydraulic detention time is 0.1~3h；
Dissolved oxygen is 0.8~8mg/L in the aerobic tank (5), and hydraulic detention time is 0.5~10h, and return sludge ratio is
10%~500%, and be adjusted according to actual conditions；
Chemical dephosphorization medicament that the dosing dephosphorization system (6) adds selection calcium salt dephosphorization agent, microbial flocculant dephosphorization agent,
Dephosphorization with ferric salt agent or aluminium salt dephosphorization agent, dosage are 5~1500mg/g SS；
Described secondary settling tank (7) hydraulic detention time is 0.5~3h；
The grain size of the ammonia nitrogen absorption material is 1~10mm, and regenerated liquid is selected as salt and is compounded with oxidant；
The ammonia nitrogen absorption material selection is activated carbon, molecular sieve, haydite, zeolite or ion exchange resin；
Salt in the regenerated liquid is selected as magnesium salts, sylvite, calcium salt, sodium salt, molysite, aluminium salt or zinc salt, a concentration of 1~
85g/L。
Oxidant in the regenerated liquid is selected as hydrogen peroxide, perchlorate, permanganate, bichromate, sodium peroxide, secondary
Chlorate, ozone or nitric acid.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342750A (en) * | 2019-07-29 | 2019-10-18 | 上海电力大学 | The synchronous sewage-treatment plant and technique for realizing sludge in-situ decrement and denitrogenation dephosphorizing |
| CN110342684A (en) * | 2019-07-29 | 2019-10-18 | 上海电力大学 | A kind of efficient precipitation device and technique with ammonia nitrogen removal ability |
| CN110981077A (en) * | 2019-10-28 | 2020-04-10 | 上海电力大学 | System and method for efficiently removing ammonia nitrogen based on side stream shortcut nitrification-anaerobic ammonia oxidation process |
| CN112939285A (en) * | 2021-03-10 | 2021-06-11 | 上海电力大学 | Device and process for quickly and efficiently removing pollutants in sewage discharged from pump station |
| CN110342684B (en) * | 2019-07-29 | 2024-04-26 | 上海电力大学 | Efficient precipitation device and process with ammonia nitrogen removal capability |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715218A (en) * | 2004-07-02 | 2006-01-04 | 桂林工学院 | Process for removing nitrogen and phosphor using traditional waste water treatment process |
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2018
- 2018-06-28 CN CN201810689892.9A patent/CN108793605A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1715218A (en) * | 2004-07-02 | 2006-01-04 | 桂林工学院 | Process for removing nitrogen and phosphor using traditional waste water treatment process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342750A (en) * | 2019-07-29 | 2019-10-18 | 上海电力大学 | The synchronous sewage-treatment plant and technique for realizing sludge in-situ decrement and denitrogenation dephosphorizing |
| CN110342684A (en) * | 2019-07-29 | 2019-10-18 | 上海电力大学 | A kind of efficient precipitation device and technique with ammonia nitrogen removal ability |
| CN110342684B (en) * | 2019-07-29 | 2024-04-26 | 上海电力大学 | Efficient precipitation device and process with ammonia nitrogen removal capability |
| CN110981077A (en) * | 2019-10-28 | 2020-04-10 | 上海电力大学 | System and method for efficiently removing ammonia nitrogen based on side stream shortcut nitrification-anaerobic ammonia oxidation process |
| CN112939285A (en) * | 2021-03-10 | 2021-06-11 | 上海电力大学 | Device and process for quickly and efficiently removing pollutants in sewage discharged from pump station |
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