CN108409033A - FNA strengthens the apparatus and method of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration - Google Patents

FNA strengthens the apparatus and method of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration Download PDF

Info

Publication number
CN108409033A
CN108409033A CN201810203306.5A CN201810203306A CN108409033A CN 108409033 A CN108409033 A CN 108409033A CN 201810203306 A CN201810203306 A CN 201810203306A CN 108409033 A CN108409033 A CN 108409033A
Authority
CN
China
Prior art keywords
sludge
zone
valve
anoxic
mixed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201810203306.5A
Other languages
Chinese (zh)
Other versions
CN108409033B (en
Inventor
彭永臻
王增花
王博
宫小斐
乔昕
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing University of Technology
Original Assignee
Beijing University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing University of Technology filed Critical Beijing University of Technology
Priority to CN201810203306.5A priority Critical patent/CN108409033B/en
Publication of CN108409033A publication Critical patent/CN108409033A/en
Application granted granted Critical
Publication of CN108409033B publication Critical patent/CN108409033B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • 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
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/001—Runoff or storm water
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/14—NH3-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/15—N03-N
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/16—Total nitrogen (tkN-N)
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/18—PO4-P
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/38—Gas flow rate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time
    • 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
    • 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
    • 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

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

FNA strengthens the apparatus and method of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration, belongs to sewage treatment field.Described device has：Raw water box, bioreactor, secondary settling tank, Treatment of Sludge reactor.The method is：Into anaerobic zone, the anoxic zone of bioreactor, anaerobic zone carries out anaerobic phosphorus release and stores internal carbon source for sanitary sewage segmentation, and reflux nitrite nitrogen is reduced to nitrogen, while anoxic denitrification dephosphorization by the first anoxic zone denitrifying bacterium using internal carbon source.Aerobic zone is subsequently entered, ammonium oxidation is nitrite nitrogen by ammonia oxidation bacteria, and the carbon source denitrification in second strand of water is utilized into the second anoxic zone.Sludge age is controlled by periodically discharging excess sludge, partial reflux sludge is back to bioreactor again using nitrous acid (FNA) processing that dissociates；This method realizes short distance nitration to the inhibition of nitrite-oxidizing bacterium using FNA much larger than the inhibition to ammonia oxidation bacteria, replaces Anoxic/Aerobic intermittent aerating to maintain to stablize short distance, realizes municipal sewage continuous flow advanced nitrogen dephosphorization.

Description

FNA strengthens the apparatus and method of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration
Technical field
The present invention relates to the apparatus and method that a kind of FNA strengthens the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration, belong to In technical field of biological sewage treatment.Partial reflux sludge is carried out FNA side processing, profit by it in segmental influent UCT techniques With FNA to the inhibition of nitrite-oxidizing bacteria much larger than the inhibition to ammonia oxidizing bacteria, to eluriate nitrite-oxidizing bacteria, realize Continuous-flow aerobic area short distance nitration, and alternate Anoxic/Aerobic intermittent aerating can more maintain the stabilization of short distance nitration, to fully Using raw water carbon source, aeration quantity is saved, realizes the advanced nitrogen dephosphorization of continuous flow sanitary sewage.
Background technology
With the development of the social economy, nitrogen and phosphorus content is higher and higher in the waste water of industry and life discharge, it is thus caused Body eutrophication phenomenon is also increasingly severe, and the denitrogenation dephosphorizing problem of city domestic sewage is gradually taken seriously.Sewage at present Treatment plant mostly uses traditional nitration denitrification biological denitrification process, by ammonia oxidation bacteria is nitrous by mineralized nitrogen in aerobic zone State nitrogen then converts nitrite nitrogen to nitrate nitrogen under the effect of nitrous oxidation bacteria, is by nitrate-nitrogen reduction in anoxic zone then Nitrogen.Research recently finds that in aerobic zone be nitrite nitrogen by ammonium oxidation, then directly restores nitrite nitrogen in anoxic zone For the short-cut nitrification and denitrification technology of nitrogen, the aeration quantity of aerobic zone can be saved, reducing the organic carbon source of denitrification process needs The amount of asking can finally reduce cost of sewage disposal.It is contour that Short-distance nitrification denitrification nitrogen removal technology has been successfully applied to sludge-digestion liquid Ammonia nitrogen waste water, and using less in the municipal sewage treatment of low ammonia nitrogen, the reason is that the nitrous acid in urban sewage treating device The growth of salt oxidation bacteria is difficult to stability contorting.Current research is the results show that under anoxia condition, and the nitrous acid, that is, FNA that dissociates is to nitrous The inhibiting effect of acid oxidase bacterium is much larger than ammonia oxidizing bacteria, can be quickly real by the part nitrifying sludge in side processing unit Existing short distance nitration, but stablizing for short distance nitration remains very difficult, needs to control the auxiliary such as dissolved oxygen, spoil disposal control sludge age Measure.
Traditional step feed technology is to rely on traditional A/O techniques, is usually formed by multistage A/O tandem compounds, is used The mode of multipoint water feeding is intake each section of anoxic zone, sludge reflux to reactor first section, the anoxic zone denitrifying bacterium profit of first segment Denitrification is carried out to the nitrate nitrogen in returned sludge with partial raw water carbon source, every section of aerobic zone nitrification liquid and part intake while flowing Enter next section of anoxic zone and carries out denitrification.It is good that the multistage A/O tandem process of visible sections water inlet is equivalent to alternate anoxic Oxygen intermittent aerating can also inhibit NOB, promote stablizing for short distance nitration to maintain, but continuous flow step feed technology is only limitted to denitrogenation, It generally requires the outer medicament that adds and carries out chemical dephosphorization.
Segmental influent UCT techniques are that anaerobic zone is added in step feed technology, and secondary settling tank returned sludge is back to first Section anoxic zone, and the reflux of the muddy water mixed solution from first section anoxic zone to anaerobic zone is added, segmental influent UCT techniques can guarantee anaerobism The anaerobic environment in area to greatly improve the phosphorus removal property of technique, and can make full use of raw water carbon source, realize that advanced nitrogen removes Phosphorus.
Invention content
The purpose of the present invention is on the basis of segmental influent UCT techniques, side is carried out to partial reflux sludge using FNA Processing, which again returns to, fast implements short distance nitration in main reactor, and segmental influent alternating Anoxic/Aerobic intermittent aerating can be same Step inhibits nitrite-oxidizing bacterium, maintains to provide guarantee for stablizing for short distance nitration.Sanitary sewage segmentation is lacked into anaerobic zone, second Oxygen area, third anoxic zone, biodegradable organic matter storage internal carbon source pHB releases phosphorus in anaerobic zone polyP bacteria is using raw water, the One anoxic zone heterotrophic denitrifying Bacteria carries out anti-nitration reaction using residual organic substances, while part Denitrifying Phosphate Accumulating Organisms are with nitrous acid Salt is electron acceptor, completes denitrifying phosphorus uptake by electron donor of the internal carbon source pHB in storing body, realizes synchronizing for nitrogen phosphorus It removes.Mixed liquor enters the first aerobic zone and short distance nitration reaction occurs, and ammonium oxidation is nitrite nitrogen by ammonia oxidation bacteria, and is realized poly- The aerobic phosphorus absorption of phosphorus bacterium is reacted.It subsequently enters the water inlet of the second anoxic zone and second segment and mix the anti-nitre of carbon source progress utilized in raw water Change, nitrite nitrogen is reduced to nitrogen, mixed liquor subsequently enters the second aerobic zone and carries out short distance nitration reaction, and ammonia oxidation bacteria is by the Ammonium oxidation in two bursts of raw waters is nitrite nitrogen.It enters back into the water inlet of third anoxic zone and third stock and mix and utilize raw water carbon source anti- Nitrification finally enters third aerobic zone short distance nitration, and the theoretical technique can remove 85% total nitrogen, 90% TP, and water outlet reaches one Grade A standards.
To achieve the above object, the present invention provides a kind of segmental influent UCT advanced nitrogen dephosphorization of FNA reinforcings short distance nitration Device, including：Raw water box (1), bioreactor (2), secondary settling tank (3), Treatment of Sludge reactor (4), raw water box (1) setting There are intake pump (1.1), inlet valve I (1.2), inlet valve II (1.3), inlet valve III (1.4)；Bioreactor (2) is divided into 7 lattice Room, respectively anaerobic zone, the first anoxic zone, the first aerobic zone, the second anoxic zone, the second aerobic zone, third anoxic zone, third are good Oxygen area, the flowing hole that is staggered up and down according to water (flow) direction connect each cell compartment.Anaerobic zone passes through blender (2.1) with each anoxic zone It is stirred mixing, each aerobic zone is by being equipped with aeration head (2.2), gas flowmeter (2.3), air volume regulating valve (2.4), pneumatics The aerator of machine (2.5) is oxygenated, and (2.6) and mixed-liquor return valve (2.7) are pumped by the first anoxic by mixed-liquor return Area's mixed-liquor return to anaerobic zone, bioreactor (2) is connected by outlet valve (2.8) with the water inlet pipe of secondary settling tank (3)；Two Heavy pond (3) are equipped with outlet pipe (3.1), and bottom passes through returned sludge valve I (3.3) and sludge reflux pump (3.4) and returned sludge Valve II (3.5) is connected with the first anoxic zone, and excess sludge is discharged by excess sludge mud valve (3.2), and partial reflux sludge is logical Returned sludge valve III (3.6) is crossed with Treatment of Sludge reactor (4) to be connected；Treatment of Sludge reactor (4) is an open pond body, is equipped with Chemical feed pipe (4.1), blender (4.2) add pump (4.3) by sludge, sludge adds valve (4.4) and is connected with the first anoxic zone It connects.
Present invention simultaneously provides a kind of methods that FNA strengthens the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration, including Following steps：
Device start-up operation is as follows：Inoculation municipal sewage plant's secondary settling tank returned sludge is added to bioreactor (2) In, so that sludge concentration is reached 2000~4000mg/L, bioreactor (2) hydraulic detention time HRT controls are led in 10~12h Excess sludge mud valve (3.2) discharge excess sludge is crossed, makes sludge age control in 15~20d.
Operation is as follows when runing adjustment：Sanitary sewage enters bioreactor (2) by raw water box (1) through intake pump (1.1), Which part sewage enters anaerobic zone through inlet valve I (1.2), and part of contaminated water enters the second anoxic zone through inlet valve II (1.3), remains Remaining sewage enters third anoxic zone through inlet valve III (1.4), and three sections of flow of inlet water ratios are 3:2:2.Part of contaminated water by anaerobic zone into Enter the first anoxic zone, enter back into the first aerobic zone, it is aerobic to be then mixed into second with the water inlet of another part of the second anoxic zone Area is then mixed into third aerobic zone with the water inlet of third anoxic zone.Unlatching and gas of the period by air volume regulating valve (2.4) The control of flowmeter (2.3), it is 0.5~1.0mg/L to make aerobic zone dissolved oxygen concentration.First anoxic zone mixed liquor passes through mixed liquor Reflux pump (2.6) is back to anaerobic zone with mixed-liquor return valve (2.7), and control return current ratio of the mixed liquid is 50%~100%.
Mixed liquor enters secondary settling tank (3), 2~3h of residence time, to realize mud from third aerobic zone through outlet valve (2.8) Water detaches, and returned sludge is delivered to the first anoxic zone through sludge reflux pump (3.4), and reflux ratio is 80%~150%.Wherein flow back The 5%~10% of sludge through returned sludge valve III (3.6) enter Treatment of Sludge reactor (4), from chemical feed pipe (4.1) to sludge at Reason reactor (4) adds sodium nitrite, makes wherein a concentration of 300~1200mg/L of nitrite nitrogen, and by add acid or alkali come Conditioning of mud treatment reactor (4) interior pH be 5.5~6.0, the Treatment of Sludge time be 12~for 24 hours.Processed sludge is through sludge Add pump (4.3), sludge adds valve (4.4) and is delivered to the first anoxic zone.
The technical principle of the present invention is as follows：
Anaerobic zone：The mixed liquor that first burst of water inlet is extracted with mixed-liquor return pump from the first anoxic zone enters anaerobism simultaneously Area, and mixed with mixed liquor in anaerobic zone, polyP bacteria is completed under the stirring action of blender absorbs biological can drop in raw water Organic matter is solved, is stored in the form of internal carbon source PHB in polyP bacteria body, while discharging a large amount of dissolubility orthophosphates；First Anoxic zone：The excess sludge to flow back from secondary settling tank goes out with the sludge handled through FNA that Treatment of Sludge reactor flows back with anaerobic zone Water is mixed into the first anoxic zone, and heterotrophic denitrifying Bacteria carries out denitrification using residual organic substances under the stirring action of blender Reaction, while part Denitrifying Phosphate Accumulating Organisms are using nitrite as electron acceptor, with the internal carbon source PHB in anaerobic reactor storing body Denitrifying phosphorus uptake is completed for electron donor, realizes the synchronous removal of nitrogen phosphorus；First aerobic zone：First anoxic zone go out water mixed liquid into Enter the first aerobic zone, the remaining a small amount of organic matter of heterotroph oxidation, mineralized nitrogen is nitrite nitrogen by ammonia oxidation bacteria, and polyP bacteria is completed Aerobic phosphorus absorption process.The size of aeration quantity is adjusted according to operating status Inlet and outlet water situation, and the first aerobic zone of control is discharged ammonia nitrogen 0 ~3mg/L；Second anoxic zone：Second burst of water inlet is mixed into the second anoxic zone with the first aerobic zone nitrification liquid, in blender The organic matter that heterotrophic denitrifying Bacteria is intake using second strand under stirring action carries out anti-nitration reaction, while with phosphatic suction It receives；Second aerobic zone：Function is the same as the first aerobic zone；Third anoxic zone：Function is the same as the second anoxic zone；Third aerobic zone：Function is same First aerobic zone.
Secondary settling tank：Third aerobic zone mixed liquor enters secondary settling tank and carries out mud-water separation, is arranged outside supernatant, sludge settling is in dirt Bucket is partly promoted to the first anoxic zone, wherein the 5%~10% of returned sludge through returned sludge control valve and sludge reflux pump Enter Treatment of Sludge reactor, excess sludge discharge through returned sludge valve III；Treatment of Sludge reactor：Partial reflux sludge enters Treatment of Sludge reactor, adds sodium nitrite, makes wherein a concentration of 300~1200mg/L of nitrite nitrogen, and by add acid or Alkali come adjust pH be 5.5~6.0, the Treatment of Sludge time be 12~for 24 hours.Using free nitrous acid (FNA) to nitrous oxidizing bacteria Inhibition level be much larger than to the inhibition level of ammonia oxidizing bacteria, the short SRT of 15~20d of binding reactor spoil disposal is eluriated Nitrous oxidizing bacteria, quickly starts short distance nitration.And segmental influent alternating Anoxic/Aerobic intermittent aerating can synchronize and inhibit nitrous Acid oxidase bacterium maintains to provide guarantee for stablizing for short distance nitration.
Compared with prior art, the present invention has the following advantages：
1, raw water segmentation is carried out releasing phosphorus and anti-nitration reaction into anaerobic zone and anoxic zone, original is farthest utilized Water carbon source, and can guarantee the anaerobic environment of anaerobic zone in conjunction with UCT techniques, to greatly improve the phosphorus removal property of technique, therefore nothing The advanced nitrogen dephosphorization that low C/N sanitary sewages can be realized in outer carbon source need to be added.
2, some residual sludge is subjected to side processing using FNA, is eluriated in conjunction with the discharge short sludge age of excess sludge Nitrite-oxidizing bacteria can fast implement short distance nitration, and segmental influent alternating Anoxic/Aerobic intermittent aerating can synchronize inhibition Nitrite-oxidizing bacterium maintains to provide guarantee for stablizing for short distance nitration, and to save aeration quantity, energy consumption reduces.
3, sludge yield is low so that apparatus sewage sludge discharge capacity is low, and sludge treatment takes low.Anoxic/Aerobic intermittent aerating is certain The growth for inhibiting der Pilz in degree, reduces the possibility that Filamentous Bulking occurs.
Description of the drawings
Fig. 1 is the structure chart of apparatus of the present invention.
Primary symbols are described as follows：1- raw water boxs；2- bioreactors；3- secondary settling tanks；4- Treatment of Sludge reactors；1.1- Intake pump；1.2- inlet valves I；1.3- inlet valves II；1.4- inlet valves III；2.1- blender；2.2- aeration head；2.3- gas stream Gauge；2.4- air volume regulating valve；2.5- air compressor machine；2.6- mixed-liquor returns pump；2.7- mixed-liquor return valves；2.8- outlet valve； 3.1- outlet pipe；3.2 excess sludge mud valves；3.3- returned sludges valve I；3.4- sludge reflux pump；3.5- returned sludges valve II； 3.6- returned sludges valve III；4.1- chemical feed pipe；4.2- blender；4.3- sludge adds pump；4.4- sludge adds valve.
Specific implementation mode
Invention is further described in detail in conjunction with the accompanying drawings and embodiments.
As shown in Figure 1, FNA strengthens the device of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration, including：Raw water box (1), bioreactor (2), secondary settling tank (3), Treatment of Sludge reactor (4), raw water box (1) are provided with intake pump (1.1), water inlet Valve I (1.2), inlet valve II (1.3), inlet valve III (1.4)；Bioreactor (2) is divided into 7 cell compartments, respectively anaerobic zone, One anoxic zone, the first aerobic zone, the second anoxic zone, the second aerobic zone, third anoxic zone, third aerobic zone, according to water (flow) direction The flowing hole that is staggered up and down connects each cell compartment.Anaerobic zone is stirred by blender (2.1) with each anoxic zone and is mixed, each good Oxygen area is by being equipped with the aerator of aeration head (2.2), gas flowmeter (2.3), air volume regulating valve (2.4), air compressor machine (2.5) It is oxygenated, (2.6) and mixed-liquor return valve (2.7) is pumped by the first anoxic zone mixed-liquor return to anaerobism by mixed-liquor return Area, bioreactor (2) are connected by outlet valve (2.8) with the water inlet pipe of secondary settling tank (3)；Secondary settling tank (3) is equipped with outlet pipe (3.1), bottom is lacked by returned sludge valve I (3.3) and sludge reflux pump (3.4) and returned sludge valve II (3.5) with first Oxygen area is connected, and excess sludge is discharged by excess sludge mud valve (3.2), and partial reflux sludge passes through returned sludge valve III (3.6) it is connected with Treatment of Sludge reactor (4)；Treatment of Sludge reactor (4) is an open pond body, is equipped with chemical feed pipe (4.1), stirs Device (4.2) is mixed, pump (4.3) is added by sludge, sludge adds valve (4.4) and is connected with the first anoxic zone.
Test water of the present invention is using the sanitary sewage of Beijing University of Technology's dependents' district discharge, specific water quality：PH is 7.0- 7.9, COD a concentration of 130-180mg/L, NH4 +- N a concentration of 60-80mg/L, NO2 -- N and NO3 -- N detection limit hereinafter, COD/N ratios are 2-3.It tests seed sludge and comes from municipal sewage plant's secondary settling tank excess sludge.Each reactor is all made of organic Glass is made, and bioreactor effective volume is 30L, is divided into 7 cell compartments.Carrying out practically process is as follows：
Device start-up operation is as follows：Inoculation municipal sewage plant's secondary settling tank returned sludge is added to bioreactor (2) In, so that sludge concentration is reached 2000~4000mg/L, bioreactor (2) hydraulic detention time HRT controls are led in 10~12h Excess sludge mud valve (3.2) discharge excess sludge is crossed, makes sludge age control in 15~20d.
Operation is as follows when runing adjustment：Sanitary sewage enters bioreactor (2) by raw water box (1) through intake pump (1.1), Which part sewage enters anaerobic zone through inlet valve I (1.2), and part of contaminated water enters the second anoxic zone through inlet valve II (1.3), remains Remaining sewage enters third anoxic zone through inlet valve III (1.4), and three sections of water inlet ratios are 3:2:2.Part of contaminated water is entered by anaerobic zone First anoxic zone enters back into the first aerobic zone, is then mixed into the second aerobic zone with the water inlet of another part of the second anoxic zone, Then it is mixed into third aerobic zone with the water inlet of third anoxic zone.Unlatching and gas stream of the period by air volume regulating valve (2.4) The control of gauge (2.3), it is 0.5~1.0mg/L to make aerobic zone dissolved oxygen concentration.First anoxic zone mixed liquor is returned by mixed liquor Stream pump (2.6) is back to anaerobic zone with mixed-liquor return valve (2.7), and control return current ratio of the mixed liquid is 50%~100%.
Mixed liquor enters secondary settling tank (3), 2~3h of residence time, to realize mud from third aerobic zone through outlet valve (2.8) Water detaches, and returned sludge is delivered to the first anoxic zone through sludge reflux pump (3.4), and reflux ratio is 80%~150%.Wherein flow back The 5%~10% of sludge through returned sludge valve III (3.6) enter Treatment of Sludge reactor (4), from chemical feed pipe (4.1) to sludge at Reason reactor (4) adds sodium nitrite, makes wherein a concentration of 300~1200mg/L of nitrite nitrogen, and by add acid or alkali come Conditioning of mud treatment reactor (4) interior pH be 5.5~6.0, the Treatment of Sludge time be 12~for 24 hours.Processed sludge is through sludge Add pump (4.3), sludge adds valve (4.4) and is delivered to the first anoxic zone.
Test result shows：After stable, in the case where not adding outer carbon source, device effluent COD concentration is 30- 50mg/L, NH4 +- N is a concentration of<5mg/L, NO2 --N<3mg/L, NO3 --N<1mg/L, TN<10mg/L, TP<0.5mg/L reaches 《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) level-one A standards.

Claims (2)

1.FNA strengthens the device of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration, it is characterised in that：Equipped with raw water box (1), bioreactor (2), secondary settling tank (3), Treatment of Sludge reactor (4), raw water box (1) are provided with intake pump (1.1), water inlet Valve I (1.2), inlet valve II (1.3), inlet valve III (1.4)；Bioreactor (2) is divided into 7 cell compartments, respectively anaerobic zone, One anoxic zone, the first aerobic zone, the second anoxic zone, the second aerobic zone, third anoxic zone, third aerobic zone, according to water (flow) direction The flowing hole that is staggered up and down connects each cell compartment；Anaerobic zone is stirred by blender (2.1) with each anoxic zone and is mixed, each good Oxygen area is by being equipped with the aerator of aeration head (2.2), gas flowmeter (2.3), air volume regulating valve (2.4), air compressor machine (2.5) It is oxygenated, (2.6) and mixed-liquor return valve (2.7) is pumped by the first anoxic zone mixed-liquor return to anaerobism by mixed-liquor return Area, bioreactor (2) are connected by outlet valve (2.8) with the water inlet pipe of secondary settling tank (3)；Secondary settling tank (3) is equipped with outlet pipe (3.1), bottom is lacked by returned sludge valve I (3.3) and sludge reflux pump (3.4) and returned sludge valve II (3.5) with first Oxygen area is connected, and excess sludge is discharged by excess sludge mud valve (3.2), and partial reflux sludge passes through returned sludge valve III (3.6) it is connected with Treatment of Sludge reactor (4)；Treatment of Sludge reactor (4) is an open pond body, is equipped with chemical feed pipe (4.1), stirs Device (4.2) is mixed, pump (4.3) is added by sludge, sludge adds valve (4.4) and is connected with the first anoxic zone.
2. application claim 1 described device carries out the side that FNA strengthens the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration Method, which is characterized in that include the following steps：
1) device start-up operation is as follows：Inoculation municipal sewage plant's secondary settling tank returned sludge is added into bioreactor (2), Sludge concentration is set to reach 2000~4000mg/L, bioreactor (2) hydraulic detention time HRT controls are in 10~12h, by surplus Remaining sludge mud valve (3.2) discharges excess sludge, makes sludge age control in 15~20d；
2) operation is as follows when runing adjustment：
2.1) sanitary sewage enters bioreactor (2) by raw water box (1) through intake pump (1.1), and which part sewage is through water inlet Valve I (1.2) enters anaerobic zone, and part of contaminated water enters the second anoxic zone through inlet valve II (1.3), and remaining sewage is through inlet valve III (1.4) enter third anoxic zone, three sections of flow of inlet water ratios are 3:2:2；Part of contaminated water by anaerobic zone enter the first anoxic zone, then into Enter the first aerobic zone, then with another part of the second anoxic zone water inlet be mixed into the second aerobic zone, then with third anoxic Area's water inlet is mixed into third aerobic zone；The control that period passes through the unlatching and gas flowmeter (2.3) of air volume regulating valve (2.4) System, it is 0.5~1.0mg/L to make aerobic zone dissolved oxygen concentration；First anoxic zone mixed liquor is by mixed-liquor return pump (2.6) and mixes It closes liquid return valve (2.7) and is back to anaerobic zone, control return current ratio of the mixed liquid is 50%~100%；
2.2) mixed liquor enters secondary settling tank (3), 2~3h of residence time, to realize mud from third aerobic zone through outlet valve (2.8) Water detaches, and returned sludge is delivered to the first anoxic zone through sludge reflux pump (3.4), and reflux ratio is 80%~150%；Wherein flow back The 5%~10% of sludge through returned sludge valve III (3.6) enter Treatment of Sludge reactor (4), from chemical feed pipe (4.1) to sludge at Reason reactor (4) adds sodium nitrite, makes wherein a concentration of 300~1200mg/L of nitrite nitrogen, and by add acid or alkali come Conditioning of mud treatment reactor (4) interior pH be 5.5~6.0, the Treatment of Sludge time be 12~for 24 hours；Processed sludge is through sludge Add pump (4.3), sludge adds valve (4.4) and is delivered to the first anoxic zone.
CN201810203306.5A 2018-03-13 2018-03-13 Device and method for advanced nitrogen and phosphorus removal of segmented water inlet UCT by FNA (nitrogen rich aeration) enhanced short-cut nitrification Active CN108409033B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810203306.5A CN108409033B (en) 2018-03-13 2018-03-13 Device and method for advanced nitrogen and phosphorus removal of segmented water inlet UCT by FNA (nitrogen rich aeration) enhanced short-cut nitrification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810203306.5A CN108409033B (en) 2018-03-13 2018-03-13 Device and method for advanced nitrogen and phosphorus removal of segmented water inlet UCT by FNA (nitrogen rich aeration) enhanced short-cut nitrification

Publications (2)

Publication Number Publication Date
CN108409033A true CN108409033A (en) 2018-08-17
CN108409033B CN108409033B (en) 2021-02-02

Family

ID=63131288

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810203306.5A Active CN108409033B (en) 2018-03-13 2018-03-13 Device and method for advanced nitrogen and phosphorus removal of segmented water inlet UCT by FNA (nitrogen rich aeration) enhanced short-cut nitrification

Country Status (1)

Country Link
CN (1) CN108409033B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109665668A (en) * 2019-01-09 2019-04-23 广州嘉康环保技术有限公司 A kind of aquaculture wastewater biochemistry dephosphorization process
CN109809566A (en) * 2019-04-09 2019-05-28 沈阳环境科学研究院 A kind of AAO biological reaction pool of branch water inlet
CN110255714A (en) * 2019-07-09 2019-09-20 北京首创股份有限公司 A kind of low carbon source urban sewage processing system and method
CN111675331A (en) * 2020-06-12 2020-09-18 北京得世达环保科技有限公司 Aerobic and anoxic alternative AAO-X sewage treatment system
CN112456641A (en) * 2020-10-16 2021-03-09 北京工业大学 Device and method for realizing continuous flow synchronous short-cut nitrification and denitrification dephosphorization based on sludge side treatment
CN113998783A (en) * 2021-11-02 2022-02-01 海南大学 Low-carbon nitrogen and phosphorus removal device and method for municipal sewage based on partial return sludge deep anaerobic treatment
CN115072876A (en) * 2022-07-20 2022-09-20 长春工程学院 Method for inhibiting filamentous bacterium sludge bulking through sectional water inflow and application thereof
CN115448461A (en) * 2022-10-26 2022-12-09 长江勘测规划设计研究有限责任公司 Sewage treatment system and method for hydrogen production by coupling activated sludge and photovoltaic
CN115893648A (en) * 2022-10-19 2023-04-04 北京城市排水集团有限责任公司 Municipal sewage short-cut nitrification treatment system and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104512964A (en) * 2014-11-29 2015-04-15 北京工业大学 Sludge side treatment-based urban sewage short-cut nitrogen removal method
CN104528933A (en) * 2014-11-29 2015-04-22 北京工业大学 Method for realizing continuous-flow city sewage autotrophic nitrogen removal based on FNA treatment of sludge
CN105330018A (en) * 2015-10-31 2016-02-17 北京工业大学 Urban sewage treatment device and method for quick realization of partial nitrification based on free nitrous acid inhibition
CN105800784A (en) * 2016-03-28 2016-07-27 哈尔滨工业大学 Improved UCT step-feed efficient biological denitrification and dephosphorization device based on DEAMOX technology and application method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104512964A (en) * 2014-11-29 2015-04-15 北京工业大学 Sludge side treatment-based urban sewage short-cut nitrogen removal method
CN104528933A (en) * 2014-11-29 2015-04-22 北京工业大学 Method for realizing continuous-flow city sewage autotrophic nitrogen removal based on FNA treatment of sludge
CN105330018A (en) * 2015-10-31 2016-02-17 北京工业大学 Urban sewage treatment device and method for quick realization of partial nitrification based on free nitrous acid inhibition
CN105800784A (en) * 2016-03-28 2016-07-27 哈尔滨工业大学 Improved UCT step-feed efficient biological denitrification and dephosphorization device based on DEAMOX technology and application method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109665668A (en) * 2019-01-09 2019-04-23 广州嘉康环保技术有限公司 A kind of aquaculture wastewater biochemistry dephosphorization process
CN109809566A (en) * 2019-04-09 2019-05-28 沈阳环境科学研究院 A kind of AAO biological reaction pool of branch water inlet
CN110255714A (en) * 2019-07-09 2019-09-20 北京首创股份有限公司 A kind of low carbon source urban sewage processing system and method
CN110255714B (en) * 2019-07-09 2022-07-12 北京首创股份有限公司 Low-carbon-source urban sewage treatment system and method
CN111675331A (en) * 2020-06-12 2020-09-18 北京得世达环保科技有限公司 Aerobic and anoxic alternative AAO-X sewage treatment system
CN112456641A (en) * 2020-10-16 2021-03-09 北京工业大学 Device and method for realizing continuous flow synchronous short-cut nitrification and denitrification dephosphorization based on sludge side treatment
CN112456641B (en) * 2020-10-16 2022-04-22 北京工业大学 Device and method for realizing continuous flow synchronous short-cut nitrification and denitrification dephosphorization based on sludge side treatment
CN113998783A (en) * 2021-11-02 2022-02-01 海南大学 Low-carbon nitrogen and phosphorus removal device and method for municipal sewage based on partial return sludge deep anaerobic treatment
CN115072876A (en) * 2022-07-20 2022-09-20 长春工程学院 Method for inhibiting filamentous bacterium sludge bulking through sectional water inflow and application thereof
CN115072876B (en) * 2022-07-20 2023-12-08 长春工程学院 Method for inhibiting filamentous fungus sludge expansion by segmented water inflow and application thereof
CN115893648A (en) * 2022-10-19 2023-04-04 北京城市排水集团有限责任公司 Municipal sewage short-cut nitrification treatment system and method
CN115448461A (en) * 2022-10-26 2022-12-09 长江勘测规划设计研究有限责任公司 Sewage treatment system and method for hydrogen production by coupling activated sludge and photovoltaic

Also Published As

Publication number Publication date
CN108409033B (en) 2021-02-02

Similar Documents

Publication Publication Date Title
CN108409033A (en) FNA strengthens the apparatus and method of the segmental influent UCT advanced nitrogen dephosphorization of short distance nitration
CN106745743B (en) Sewage nitrogen and phosphorus removal system
CN101570382B (en) Device for improving advanced nitrogen and phosphorus removal by step feed and method
CN108217950A (en) The device and method that FNA reinforcement sludges ferment and realize sewerage short-cut denitrification dephosphorization
CN101870540B (en) System and method for treating nitrogen and phosphorus in urban sewage
CN100569669C (en) Anaerobic-anoxic oxidation pitch technique denitrification dephosphorization device and method thereof
CN104163551B (en) A kind of MUCT-MBR combination process being applied to sewage disposal
CN105293702B (en) It is a kind of to be started and the denitrifying method and apparatus of stably maintaining shortcut nitrification by controlling different scarce aerobic volume ratios
CN102485668A (en) Wastewater pretreatment method and application thereof
KR20000023650A (en) Multi-phase dual cycle influent process
CN102690019A (en) High-efficiency nitrogen and phosphorus synchronous removal method in treating low concentration wastewater
AU5889098A (en) Process, using ammonia rich water for the selection and enrichment of nitrifying micro-organisms for nitrification of wastewater
CN105800784A (en) Improved UCT step-feed efficient biological denitrification and dephosphorization device based on DEAMOX technology and application method
CN103121754A (en) Denitrification and dephosphorization technique
CN111547846A (en) By-pass flow type biological phosphorus removal process
CN202688093U (en) Improved A/O (anoxic/oxic) four-point section-water supply high-efficiency synchronous nitrogen and phosphorus removal device
CN110171904B (en) Continuous flow AAO dephosphorization and partial denitrification series-connection combined type fixed biological membrane activated sludge autotrophic denitrification device and method
CN110217939B (en) Improved AAO-based sewage nitrogen and phosphorus removal device and process
CN201458900U (en) Improved segmentation water inlet depth nitrogen and phosphorus removing device
CN111003816B (en) Biochemical tail water biological denitrification method for inhibiting non-filamentous bacterium expansion
CN101269878A (en) Return sludge separation technique for improving dephosphorization removing nitric efficiency factor of wastewater treatment
CN110981078B (en) Continuous flow process for realizing urban sewage denitrification coupled with biological phosphorus removal by utilizing anaerobic ammonia oxidation
CN202046974U (en) Highly efficient treatment system for denitrification and dephosphorization of urban sewage
CN112759083B (en) Sludge source reduction device and sludge source reduction process
CN211170319U (en) Coupling treatment system of iron-promoted magnetic loading anaerobic/anoxic activated sludge method and biofilm method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant