CN106115916A - One is put aerobic nitrification, two ends anoxic denitrification filter tank technique and device thereof - Google Patents
One is put aerobic nitrification, two ends anoxic denitrification filter tank technique and device thereof Download PDFInfo
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- CN106115916A CN106115916A CN201610631271.6A CN201610631271A CN106115916A CN 106115916 A CN106115916 A CN 106115916A CN 201610631271 A CN201610631271 A CN 201610631271A CN 106115916 A CN106115916 A CN 106115916A
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- water
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- stage casing
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- 238000000034 method Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 74
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 45
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000010865 sewage Substances 0.000 claims abstract description 39
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 37
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 28
- 238000010992 reflux Methods 0.000 claims description 18
- 239000000126 substance Substances 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 14
- 239000001301 oxygen Substances 0.000 claims description 14
- 229910052760 oxygen Inorganic materials 0.000 claims description 14
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 11
- 238000011001 backwashing Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 11
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 206010002660 Anoxia Diseases 0.000 claims description 5
- 241000976983 Anoxia Species 0.000 claims description 5
- 206010021143 Hypoxia Diseases 0.000 claims description 5
- 230000007953 anoxia Effects 0.000 claims description 5
- 238000013459 approach Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 3
- 230000009469 supplementation Effects 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 2
- 239000003153 chemical reaction reagent Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 1
- 229910002651 NO3 Inorganic materials 0.000 abstract description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000010842 industrial wastewater Substances 0.000 description 4
- 239000010841 municipal wastewater Substances 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000004148 unit process Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
- C02F2209/15—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
- C02F2209/22—O2
-
- 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
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- 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
- C02F2303/14—Maintenance of water treatment installations
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Originally the invention discloses in one and put aerobic nitrification, two ends anoxic denitrification filter tank technique and device thereof, described device is the two ends denitrification system being sequentially connected in series by leading portion anoxic denitrification filter tank, intermediate pool, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank, clear water reserviors and program robot control system(RCS) is constituted；Leading portion anoxic denitrification filter tank completes leading portion denitrification denitrogenation process in making full use for the treatment of sewage under conditions of carbon source, aerobic nitrification filter tank, stage casing completes nitrifying process, back segment anoxic denitrification filter tank completes the residue nitrate denitrification advanced nitrogen process of additional carbon, and program robot control system(RCS) is according to the optimal operating condition of the data automatic control regulator control system collected and surveyed.The present invention can make sewage reach advanced nitrogen purpose, has the distinguishing features such as investment cost saves, operating cost is low concurrently.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related in one put aerobic nitrification, anoxic denitrification filter tank, two ends
Technique and device thereof, be applicable to kjeldahl nitrogen concentration and BOD5Municipal wastewater that concentration is the highest and Industrial Wastewater Treatment.
Background technology
The emphasis of water pollution control administers the richness turning to the nutrients such as nitrogen to cause from simple Organic Pollution
The research of nutrient laden problem, the advanced nitrogen of sewage has become difficult point and core.Sewage can according to different carbon-nitrogen ratio scopes
It is divided into three types sewage: specifically include first kind sewage (0≤BOD5/ TN < 1), Equations of The Second Kind sewage (1≤BOD5/ TN < 3),
3rd class sewage (3≤BOD5/ TN).Traditional biofilter denitrification process and device include pre-denitrification and denitrogenation biological filter
With rear-mounted denitrification denitrogenation biological filter.During traditional wastewater processes, first kind sewage mainly uses rear-mounted denitrification denitrification organisms
Filter tank, Equations of The Second Kind sewage and the 3rd class sewage mainly use pre-denitrification and denitrogenation biological filter.
The leading portion anaerobic environment of Prepositive denitrification bio-filter can improve the biodegradability of sewage, can make full use of in former water
Denitrifying carbon source.Owing to the nitrification of this technique occurred before denitrification, therefore nitrification liquid return-flow system must be set, and then
The nitrate making back segment is back to leading portion denitrification zone.The engineering practice of a large amount of companies and studying for a long period of time shows: this technique is triumphant
There is more drawback in municipal wastewater that family name's nitrogen concentration is higher or Industrial Wastewater Treatment: on the one hand this technique is extremely difficult to the degree of depth
Denitrogenation purpose (water environment quality standard, TN≤5mg/L)；On the other hand, this technique must use high mixed liquid recycle ratio,
Can there is a lot of drawback in high nitrification reflux ratio, as in Equations of The Second Kind, the municipal wastewater of the 3rd class or industrial wastewater, typically first
The denitrification section of level need to mend throwing denitrifying carbon source, owing to kjeldahl nitrogen (organic nitrogen and ammonia nitrogen) concentration would generally be higher than 45mg/L,
When making water outlet total nitrogen less than 15mg/L, it is the highest that mixed liquid recycle ratio then can be up to 200% ~ 1300%(kjeldahl nitrogen concentration, and nitrification liquid returns
Flow ratio is the highest).High mixed liquid recycle ratio has the disadvantage that 1. high reflux ratio then means the chi of the structures of the same time of staying
Very little, backwash blower fan electric power, Aeration fan electric power etc. are multiplied, and control the most not for investment and operating cost
Profit；2. high reflux ratio means that can carry more dissolved oxygen enters denitrification filter pool, and the rising of dissolved oxygen not only can seriously press down
Denitrification processed, and reduce the removal of carbon and nitrogen usefulness of sewage, this time filter material layer can form aerobic-anaerobic-anaerobic reaction district,
Aerobic microbiological can consume many biodegradable carbon sources, and this can increase the dosage of denitrification section carbon source the most undoubtedly, and then
Dramatically increase the processing cost of sewage.
Therefore, exploitation one is intended to make full use of in former water degradation of organic substances carbon source, is avoided that again high nitrification liquid
Reflux ratio, makes sewage reach the new technology of advanced nitrogen purpose simultaneously and device will seem and be highly desirable to.
Summary of the invention
It is an object of the present invention to provide and one is put aerobic nitrification, two ends anoxic denitrification filter tank technique and successful gram of device thereof
Take disadvantages described above.
For achieving the above object, the present invention provides and puts aerobic nitrification, two ends anoxic denitrification filter apparatus in one, mainly
The denitrogenation system being sequentially connected in series by leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank
System and program robot control system(RCS) constitute, it is characterised in that: be provided with between leading portion anoxic denitrification filter tank and aerobic nitrification filter tank, stage casing by
Reflux pump and the nitrification liquid return-flow system of reflux line composition；Leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment
The water backwashing system being made up of backwash pump and backwash wash water pipeline it is provided with between anoxic denitrification filter tank and clear water reserviors；Described
Back segment anoxic denitrification filter tank system also include carbon source chemicals dosing plant；Described program robot control system(RCS) also can be polluted according to water inlet
Substrate concentration and carbon-nitrogen ratio adjust the carbon source chemical feeding quantity in reflux ratio and anoxic denitrification filter tank automatically；The described anti-nitre of leading portion anoxia
Change filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank respectively with aeration and backwashing system, nitrification liquid backflow system
Conjunction under unified central planning is connected.
Leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank are respectively by water distributing area, anti-
Answer district, clear water zone, outlet canal to constitute, filter and filter plate are installed in water distributing area, it are supporting layer and haydite layer.
Leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank also include backwash system
System, backwashing system includes backwash blower fan, backwash pump, water distribution and gas distributing pipeline；Aerobic nitrification filter tank, stage casing also includes
Aerating system, aerating system is made up of aerator, air pipe line, control valve, single-hole membrane aerator, online dissolved oxygen etc.；Institute
State backwash blower fan and backwash pump to be connected with program robot control system(RCS).
Online total nitrogen and kjeldahl nitrogen measuring instrument, online COD prison are set in leading portion anoxic denitrification bacteria filter system
Survey instrument, stage casing aerobic nitrification filter tank system water outlet arrange online nitrate nitrogen measuring instrument, online dissolved oxygen monitor table,
In back segment anoxic denitrification filter tank system, water inlet end arranges denitrifying carbon source chemicals dosing plant；Described on-line monitoring instrument data pass
The program robot control system(RCS) of delivering to is analyzed, judges, program robot control system(RCS) is by the water inlet pollutant levels analyzed, carbon-nitrogen ratio certainly
Dynamic control mixed liquid recycle ratio and the aerating system oxygen-supplying amount in aerobic nitrification filter tank, stage casing, program robot control system(RCS) is by the nitre collected
State values of nitrogen might automatically controls the chemical feeding quantity of denitrifying carbon source.
In sewage, Approach of Removal of Nitrogen mainly includes the leading portion denitrification denitrogenation making full use of Organic substance carbon source in treatment sewage
Denitrification denitrogenation process in filter tank and the denitrification degree of depth required supplementation with in the back segment denitrification denitrogenation filter tank adding carbon source take off
Nitrogen process two parts, its processing step is:
(1) first former water or the treatment sewage through pretreatment mix with backflow nitrification liquid, the most jointly enter the anti-nitre of leading portion
Change water distributing area, biofilter, supporting layer, filtrate reaction zone, complete part denitrogenation and major part de-carbon process, subsequently into stage casing
Aerobic nitrification filter tank.Program robot control system(RCS) can be according to available in the treatment sewage collected carbon source data, kjeldahl nitrogen concentration, carbon
Nitrogen ratio and flow of inlet water data and then automatically control minimum mixed liquid recycle ratio, the minimum mixed liquid recycle ratio of described control
Can both fully ensure that nearly all biodegradable carbon source is degraded in leading portion denitrification process, reduce leading portion the most as far as possible
The water inlet dissolved oxygen of denitrification filter pool, reduces energy consumption, improves denitrification efficiency, and leading portion denitrification filter pool filtering velocity controls at 5-
30m/h。
(2), when sewage flows through stage casing aerobic nitrification filter tank system, complete all of nitrifying process, flow into middle water the most again
Pond, back segment anoxic denitrification filter tank.Kelvin values of nitrogen might and flow of inlet water Data Control that program robot control system(RCS) is intake according to stage casing are roused
Blower fan, aerator supply aeration rate just meet stage casing nitrification service requirement on the premise of farthest save power consumption, in
Section aerobic nitrification filter tank filtering velocity controls at 5-30m/h.
(3), when sewage flows through back segment anoxic denitrification filter tank system, remaining advanced nitrogen process, the dirt after process are completed
Water enters clear water zone and flows ultimately in sterilization pool or dephosphorization pond+sterilization pool, can discharge through subsequent treatment.Program automatic control system
Unite according to back segment water inlet nitrate nitrogen value and the throwing device of flow of inlet water Data Control carbon source, the denitrifying carbon source of supply is lucky
Farthest saving reagent consumption amount on the premise of meeting effluent quality, back segment denitrification filter pool filtering velocity controls at 5-30m/h.
(4) periodically leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank are carried out instead
Rinsing, backwash uses " fast rainfall position+combined water and air backwash " mode, keeps the high treatment capacity of biofilter.
The present invention not only takes full advantage of the biodegradable organic in sewage, reduce denitrifying carbon source dosage,
Cost of investment and direct operating cost, and sewage can be made to reach advanced nitrogen (TN≤5mg/L) purpose, anti-load impact ability
Higher, there is great application value.
Accompanying drawing explanation
Fig. 1 is to put aerobic nitrification, two ends anoxic denitrification filter apparatus structural representation in one of the present invention.
Detailed description of the invention
1, water pump is promoted, 2, wastewater influent pipeline, 3, water distributing area, 4, supporting layer, 5, haydite layer, 6, clear water zone, 7, water outlet
Canal, 8, leading portion anoxic denitrification filter tank, 9, aerobic nitrification filter tank, stage casing, 10, intermediate pool, 11, anoxic denitrification filter tank, rear end,
12, clear water reserviors, 13, outlet pipe, 14, strainer head, 15, filter plate, 16, carbon source dosing system, 17, nitrification liquid reflux pump, 18, nitre
Change liquid reflux line, 19, backwash pump, 20, backwash water inlet pipe, 21, backwash inlet valve, 22, backwash blower fan,
23, backwash air inlet pipe, 24, backwash air intake valve, 25, aeration blower, 26, air administrative, 27, air control valve, 28,
Single-hole membrane aerator, 29, online kjeldahl nitrogen, total nitrogen and COD measuring instrument, 30, online effusion meter, 31, control cable, 32,
Line nitrate nitrogen measuring instrument, 33, online dissolved oxygen monitor table, 34, program robot control system(RCS), 35, backwash flowing water Valve,
36, backwash outlet conduit.
Detailed description of the invention
1 the invention will be further described below in conjunction with the accompanying drawings.
The present invention provides and puts aerobic nitrification, two ends anoxic denitrification filter apparatus in one, mainly by the anti-nitre of leading portion anoxia
Change filter tank (8), aerobic nitrification filter tank, stage casing (9), intermediate pool (10), back segment anoxic denitrification filter tank (11), clear water reserviors (12)
The denitrification system being sequentially connected in series and program robot control system(RCS) are constituted, it is characterised in that: leading portion anoxic denitrification filter tank (8) with in
Between Duan Shuichi, (10) are provided with the nitrification liquid return-flow system being made up of reflux pump (17) and reflux line (18)；Leading portion anoxic denitrification
Between filter tank (8), aerobic nitrification filter tank, stage casing (9), back segment anoxic denitrification filter tank (11) and clear water reserviors, (12) are provided with by backwash
The water backwashing system that water pump (19) and backwash wash water pipeline (20) form；Described back segment anoxic denitrification filter tank system also wraps
Include carbon source chemicals dosing plant (16)；Described program robot control system(RCS) (34) also can be automatic according to water inlet pollutant levels and carbon-nitrogen ratio
Adjust reflux ratio and the carbon source chemical feeding quantity in anoxic denitrification filter tank；Described leading portion anoxic denitrification filter tank (8), the aerobic nitre in stage casing
Change filter tank (9), back segment anoxic denitrification filter tank (11) and coordinate phase with aeration and backwashing system, nitrification liquid return-flow system respectively
Even.
Leading portion anoxic denitrification filter tank (8), aerobic nitrification filter tank, stage casing (9), back segment anoxic denitrification filter tank (11) are respectively
Being made up of water distributing area (3), supporting layer (4) haydite reaction zone (5), clear water zone (6), outlet canal (7), water distributing area is provided with in (3)
Filter (14) and filter plate (15), it is supporting layer (4) and haydite layer reaction zone (5).
Leading portion anoxic denitrification filter tank (8), aerobic nitrification filter tank, stage casing (9), back segment anoxic denitrification filter tank (11) are also wrapped
Including backwashing system, backwashing system includes backwash blower fan (22), backwash pump (19), water distribution pipe (20) and gas distribution pipe
Road (23)；Aerobic nitrification filter tank, stage casing (9) also includes aerating system, and aerating system is by aeration blower (25), air pipe line
(26), the composition such as control valve (27), single-hole membrane aerator (28), online dissolved oxygen instrument (33)；Described backwash blower fan (22)
It is connected with program robot control system(RCS) (34) with backwash pump (19).
Online COD, kjeldahl nitrogen and total nitrogen measuring instrument are set in leading portion anoxic denitrification biofilter (8) system
(29), stage casing aerobic nitrification filter tank (9) system water outlet arranges online nitrate nitrogen measuring instrument (32), the monitoring of online dissolved oxygen
Instrument (33), in back segment anoxic denitrification filter tank system (11), water inlet end arranges denitrifying carbon source chemicals dosing plant (16)；Described
On-line monitoring instrument data are sent to program robot control system(RCS) (34) and are analyzed, judge, program robot control system(RCS) is by entering of analyzing
Water pollutant concentration, carbon-nitrogen ratio automatically control mixed liquid recycle ratio and the aerating system oxygen-supplying amount in aerobic nitrification filter tank, stage casing,
Program robot control system(RCS) automatically controls the chemical feeding quantity of denitrifying carbon source by the nitrate nitrogen value collected.
In sewage, Approach of Removal of Nitrogen mainly includes the leading portion denitrification denitrogenation making full use of Organic substance carbon source in treatment sewage
Denitrification denitrogenation process in filter tank and the denitrification required supplementation with in the back segment denitrification advanced nitrogen filter tank adding carbon source take off
Nitrogen process two parts, its processing step is:
(1) first former water or the treatment sewage through pretreatment mix with the backflow nitrification liquid of intermediate pool, then jointly from
The inlet channel (2) of leading portion denitrification bio-filter (8) sequentially enter leading portion denitrification bio-filter (8), water distributing area (3), hold
Torr layer (4), haydite reaction zone (5), the haydite apposition growth in anoxic denitrification filter tank (8) a large amount of denitrifying microorganism, dirty
Water mainly completes part denitrogenation and major part de-carbon process, the most suspended substances quilt in sewage simultaneously in haydite reaction zone (5)
Being trapped in the space of biological ceramic particle layer (5), the water after biological ceramic particle layer (5) is degraded is after clear water zone (6), outlet canal (7)
Entering outlet conduit (2), gravity flow enters aerobic nitrification filter tank, stage casing (9).The wherein operation of leading portion anoxic denitrification filter tank system
Operating mode is controlled, by the program automatic control developed specially, the online monitoring data that (34) record according to (29), (30), (32), passes through program
Carbon source data, carbon-nitrogen ratio and flow of inlet water Data Control cable (31) that automatic control controls (34) to collect regulate nitrification liquid and return
The backflow water yield of stream pump (17), the nitrification liquid making reflux pump (17) supply refluxes, and the water yield is just satisfied makes full use of carbon source in former water
Carrying out denitrogenation requirement, the minimum mixed liquid recycle ratio of described control can both fully ensure that nearly all biodegradable carbon source is front
Section denitrification process is degraded, reduces the water inlet dissolved oxygen of leading portion denitrification filter pool (8) the most as far as possible, reduce energy consumption,
Improve denitrification efficiency.
(2) sewage after leading portion denitrification processes enters back into aerobic nitrification biofilter, stage casing (9), and passes through water distributing area
(3), supporting layer (4) enter haydite reaction zone (5), the haydite apposition growth in aerobic nitrification biofilter, stage casing (9) in a large number
Aerobic nitrification microorganism, mainly completes the nitrifying process process of ammonia nitrogen, and the water after biological ceramic particle layer (5) is degraded is through clear water zone
(6), entering outlet conduit (2) after outlet canal (7), gravity flow enters intermediate pool (10), and the part water of intermediate pool (10) is by returning
Stream pump (17) is also back to leading portion anoxic denitrification filter tank (8) through return duct (18), and it is anti-that another part gravity flow enters rear end anoxia
In nitrification filter tank.The operating condition of stage casing aerobic nitrification filter tank system is controlled (34) according to online by the program automatic control developed specially
It is online that kjeldahl nitrogen, total nitrogen and COD measuring instrument (29), online effusion meter (30), online dissolved oxygen monitor table (33) record
Monitoring Data, kjeldahl nitrogen concentration and flow of inlet water Data Control cable (31) collected by program automatic control control (34) are regulated
The blower fan amount of Aeration fan (25), the air quantity amount making Aeration fan (25) supply meets the premise of stage casing nitrification service requirement just
Under farthest save power consumption.
(3) when sewage flows through back segment anoxic denitrification filter tank (11) system, approach water distributing area (3), supporting layer (4), haydite
Reaction zone (5), clear water zone (6), outlet canal (7), haydite reaction zone (5) apposition growth substantial amounts of denitrifying microorganism, program
The nitrate nitrogen data that robot control system(RCS) (34) is collected according to online nitrate nitrogen monitor (32) automatically control carbon source throwing device (16),
The carbon source making effluent nitrate-nitrogen and add just meets the requirement of advanced nitrogen, and then ensures optimal carbon source dosage and water outlet
Water quality, the sewage self-flowing handled well through back segment anoxic denitrification filter tank (11) system enters clear water reserviors (12), clear water reserviors and each filter
Being provided with the backwashing system being made up of backwash pump (19) and Backwash pipeline (20) between pond, clear water reserviors (12) water outlet is through water outlet
Pipe (13) enters follow-up disinfecting.
(4) periodically to leading portion anoxic denitrification filter tank (8), aerobic nitrification filter tank, stage casing (9), back segment anoxic denitrification filter tank
(11) carrying out backwash, backwash uses " fast rainfall position+combined water and air backwash " mode, and water discharging valve is passed through in backwash draining
(35) and drainage pipeline enter Buffer Pool (36), keep biofilter high treatment capacity.
Example one: certain municipal wastewater, the discharge of sewage is 60000m3/ d, entering pollutant index before this process unit processes is:
COD=150mg/L, BOD5=100mg/L, TKN=55mg/L, NH3-N=48mg/L, SS=60mg/L, TN=60mg/L；Through this work
After skill processes, effluent quality index is: COD=30mg/L, BOD5=5mg/L, NH3-N=3.0mg/L, SS=10mg/L, TN=3.2mg/
L。
Example two: certain industrial wastewater flow is 8000m3/ d, before entering this PROCESS FOR TREATMENT, pollutant index is: COD=
1500mg/L, BOD5=800mg/L, TKN=555mg/L, NH3-N=490mg/L, SS=50mg/L, TN=700mg/L；Through this work
After process and equipment processes, effluent quality index is: COD=200mg/L, BOD5=10mg/L, NH3-N=3.0mg/L, SS=11mg/L, TN=
4.5mg/L。
The present invention can make full use of the Organic substance in sewage, and overcoming traditional handicraft device must be at high mixed liquid recycle ratio
Under the conditions of the deficiency run, and sewage can be made to reach advanced nitrogen (TN≤5mg/L) purpose, anti-load impact ability is higher,
There is great application value.
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art
Scholar will appreciate that the present invention content and implement according to this, can not limit the scope of the invention with this.All according to this
The equivalence that bright spirit is made changes or modifies, and all should cover the present invention's within protection domain.
Claims (5)
1. put aerobic nitrification, two ends anoxic denitrification filter tank technique and a device thereof in, mainly filtered by leading portion anoxic denitrification
The denitrification system that pond, aerobic nitrification filter tank, stage casing, intermediate pool, back segment anoxic denitrification filter tank, clear water reserviors are sequentially connected in series
Constitute, with program robot control system(RCS), the denitrification system being sequentially connected in series and program robot control system(RCS) constituted, it is characterised in that: leading portion lacks
The nitrification liquid return-flow system being made up of reflux pump and reflux line it is provided with between oxygen denitrification filter pool and pond, stage casing；Leading portion anoxia is anti-
It is provided with by backwash pump and backwash between nitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank and clear water reserviors
The water backwashing system of wash water pipeline composition；Described back segment anoxic denitrification filter tank system also includes carbon source chemicals dosing plant；Institute
The program robot control system(RCS) stated also can adjust reflux ratio and anoxic denitrification filter according to water inlet pollutant levels and carbon-nitrogen ratio automatically
The carbon source chemical feeding quantity in pond；Described leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank are divided
Not do not coordinate be connected with aeration and backwashing system, nitrification liquid return-flow system.
2. one as claimed in claim 1 puts aerobic nitrification, two ends anoxic denitrification filter apparatus, it is characterised in that: front
Section anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank are respectively by water distributing area, supporting layer, haydite
Layer reaction zone, clear water zone, outlet canal are constituted, and be provided with strainer head and filter plate, it be supporting layer and haydite layer in water distributing area
Reaction zone.
3. one as claimed in claim 1 puts aerobic nitrification, two ends anoxic denitrification filter apparatus, it is characterised in that: front
Section anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank also include backwashing system, backwash system
System includes backwash blower fan, backwash pump, water distribution and gas distributing pipeline；Aerobic nitrification filter tank, stage casing also includes aerating system, exposes
Gas system is made up of aerator, air pipe line, control valve, single-hole membrane aerator, online dissolved oxygen etc.；Described backwash blower fan
It is connected with program robot control system(RCS) with backwash pump.
4. one as claimed in claim 1 puts aerobic nitrification, two ends anoxic denitrification filter apparatus, it is characterised in that:
Leading portion anoxic denitrification bacteria filter system arranges online COD, kjeldahl nitrogen and total nitrogen measuring instrument, online effusion meter, stage casing
Arranging online nitrate nitrogen measuring instrument, online dissolved oxygen monitor table in aerobic nitrification filter tank system water outlet, back segment anoxia is anti-
In nitrification filter tank system, water inlet end arranges denitrifying carbon source chemicals dosing plant；Described on-line monitoring instrument data are sent to program certainly
Ore-controlling Role is analyzed, judges, program robot control system(RCS) automatically controls nitrification by water inlet pollutant levels, the carbon-nitrogen ratio analyzed
Liquid reflux ratio and the aerating system oxygen-supplying amount in aerobic nitrification filter tank, stage casing, program robot control system(RCS) is automatic by the nitrate nitrogen value collected
Control the chemical feeding quantity of denitrifying carbon source.
5. use a sewage treatment process for device, advanced nitrogen approach master in sewage as described in any one of claim 1-4
Including the denitrification denitrogenation process in the leading portion denitrification denitrogenation filter tank making full use of Organic substance carbon source in treatment sewage and
Requiring supplementation with the denitrification denitrogenation process two parts in the back segment denitrification denitrogenation filter tank adding carbon source, its process step is:
(1) first former water or the treatment sewage through pretreatment mix with backflow nitrification liquid, the most jointly enter the anti-nitre of leading portion
Change water distributing area, biofilter, complete part denitrogenation and major part de-carbon process；Program robot control system(RCS) is according to the pending dirt collected
Water may utilize carbon source data, carbon-nitrogen ratio and flow of inlet water and then automatically control minimum mixed liquid recycle ratio, described control
Minimum mixed liquid recycle ratio can both fully ensure that nearly all biodegradable carbon source is degraded in leading portion denitrification process, again
Reduce the water inlet dissolved oxygen of leading portion denitrification filter pool as far as possible, reduce energy consumption, improve denitrification efficiency, the anti-nitre of leading portion
Change filter tank filtering velocity to control at 5-30m/h；
(2) when sewage flows through stage casing aerobic nitrification filter tank system, completing all of nitrifying process, program robot control system(RCS) is according to stage casing
The kelvin values of nitrogen might of water inlet and flow of inlet water Data Control aerator, the aeration rate of aerator supply just meets stage casing nitrification and runs
Farthest saving power consumption on the premise of requirement, aerobic nitrification filter tank, stage casing filtering velocity controls at 5-30m/h；
(3), when sewage flows through back segment anoxic denitrification filter tank system, remaining denitrogenation (advanced nitrogen) process, program automatic control are completed
Nitrate nitrogen value that system is intake according to back segment and the throwing device of flow of inlet water Data Control carbon source, the denitrifying carbon source of supply is proper
Farthest saving reagent consumption amount on the premise of meeting well effluent quality, back segment denitrification filter pool filtering velocity controls at 5-30m/
h；
(4) periodically recoiled in leading portion anoxic denitrification filter tank, aerobic nitrification filter tank, stage casing, back segment anoxic denitrification filter tank
Washing, backwash uses " fast rainfall position+combined water and air backwash " mode, keeps the high treatment capacity of biofilter.
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Application publication date: 20161116 |