CN108264202A - A kind of process for town sewage treatment up to standard to IV class water of surface water - Google Patents
A kind of process for town sewage treatment up to standard to IV class water of surface water Download PDFInfo
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- CN108264202A CN108264202A CN201810296516.3A CN201810296516A CN108264202A CN 108264202 A CN108264202 A CN 108264202A CN 201810296516 A CN201810296516 A CN 201810296516A CN 108264202 A CN108264202 A CN 108264202A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 239000010865 sewage Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000011282 treatment Methods 0.000 title claims abstract description 15
- 239000002352 surface water Substances 0.000 title claims abstract description 13
- 230000008569 process Effects 0.000 title claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 39
- 239000004576 sand Substances 0.000 claims abstract description 24
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 16
- 239000001301 oxygen Substances 0.000 claims abstract description 16
- 238000004062 sedimentation Methods 0.000 claims abstract description 15
- 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 abstract description 14
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 13
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 13
- 239000000126 substance Substances 0.000 claims abstract description 13
- 238000011068 loading method Methods 0.000 claims abstract description 12
- 238000005189 flocculation Methods 0.000 claims abstract description 11
- 230000016615 flocculation Effects 0.000 claims abstract description 11
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 6
- 239000013618 particulate matter Substances 0.000 claims abstract description 4
- 239000004575 stone Substances 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims description 14
- 239000011574 phosphorus Substances 0.000 claims description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052742 iron Inorganic materials 0.000 claims description 7
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 6
- 238000006396 nitration reaction Methods 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 4
- 239000003814 drug Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000001632 sodium acetate Substances 0.000 claims description 4
- 235000017281 sodium acetate Nutrition 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000002203 pretreatment Methods 0.000 claims description 3
- 239000006228 supernatant Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 230000001146 hypoxic effect Effects 0.000 description 2
- 239000006247 magnetic powder Substances 0.000 description 2
- 244000005706 microflora Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011020 pilot scale process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000004176 ammonification Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000010626 work up procedure 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
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
- C02F1/488—Treatment of water, waste water, or sewage with magnetic or electric fields for separation of magnetic materials, e.g. magnetic flocculation
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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
- C02F2209/14—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
- C02F2209/16—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
- 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
The invention discloses a kind of process for town sewage treatment up to standard to IV class water of surface water, including following processing step：Town sewage is by sand, stone and the bulk particulate matter substance in pretreatment removal sewage；Branch is intake to pre- denitrification, anoxic pond after pretreatment；It is discharged successively by anaerobic pond, anoxic pond, aerobic tank, secondary settling tank, magnetic or sand loading flocculation deep phosphorous removal sedimentation basin and disinfection, oxidation residual organic substances, raising oxygen in water reaction member through pre- denitrification, is discharged after up to standard；Secondary settling tank muddy water is back to pre- denitrification pond, and aerobic tank muddy water is back to anoxic pond, and anoxic pond can additionally add carbon source；Preferred carbon source and carbon source are precisely controlled mode, are more advantageous to the realization of target；Oxidation, disinfection, oxygenation measure solve the problems, such as tradition IV class water up to standard.The present invention is intake using multizone reasonable distribution, and utilization of carbon source is abundant, and sludge age is more reasonable, is solved each problem of tradition and is actually difficult to up to standard to IV class water quality standard, ensure that each good in nitrate nitrogen removal effect is up to standard to IV class water quality standard.
Description
Technical field
The present invention relates to environmental technology fields, refer in particular to a kind of urban wastewater treatment work up to standard to IV class water of surface water
Skill.
Background technology
As China's water pollution problems increasingly highlights, the raising of urban wastewater treatment discharge standard has been trend of the times.From
The requirement that current quality of water environment improves sees, treated for many municipal sewage plants, and water outlet is often discharged into urban river,
As the water body in river.The existing sewage disposal plant effluent in China, discharge standard refer to more《At GB18918-2002 town sewages
Manage factory's pollutant emission standard》In level-one A.However for level-one A standards, water quality just corresponds to bad V class of surface water
Water.This water quality is discharged into the water body environment there are few self-purification capacity, water body is caused not repaired not only, instead by dirt
Then there is the phenomenon that " the more controlling the more dirty " in dye.Water pollution increasingly sharpens, and an urgent demand effluent of municipal sewage plant reaches
IV class standard of earth's surface class.I.e. by CODCr30mg/l is reduced to by the 50mg/L of level-one A；BOD5It is reduced to by the 10mg/L of level-one A
6mg/L；Ammonia nitrogen is reduced to 1.5mg/L by the 5mg/L of level-one A；Total phosphorus is reduced to 0.3mg/L by the 0.5mg/L of level-one A；Total nitrogen
5mg/L is reduced to by the 15mg/L of level-one A；Dissolved oxygen (DO) is improved by the no requirement (NR) of level-one A to 3mg/L.
1 Effluent criteria level-one A of table and IV class water quality contrast table of earth's surface
At present, expansion practice successively in all parts of the country, to sewage effluents CODCr, ammonia nitrogen, total nitrogen, total phosphorus etc. requirement more
Height, existing IV class hydraulic art are actually difficult to up to standard all referring to marking.Therefore, it is necessary to work out a kind of new technical solution to solve
State problem.But there are still following key problems for existing IV class water treatment technology：(1) part of two stage biological treatment process is designed not
Rationally part, each function sludge age and dominant microflora are difficult to control；Organic carbon source does not make full use of in water inlet；Organic carbon in water inlet
Source does not make full use of, and nitric efficiency is relatively low；Nitrification is incomplete, when winter temperature is relatively low, is discharged NH4 +- N is difficult that control exists
It is 1.5mg/L following；Water outlet TP is generally higher than 1.0mg/L；(2) traditional chemical dephosphorization technology, pharmaceutical use is big, treatment effect
Poor, surface loading is low, takes up a large area, it is impossible to which guarantee stably reaches IV class water index；(3) the smart denitrogenation of tradition is frequently with anti-nitre
Change denitrogenation biological filter, have the following problems：1) known in industry, due to plate between biologic packing material under hypoxic/anaerobic denitrification environment
The influences such as knot, short stream, the water outlet COD of the denitrification bio-filter after additional carbonCrInfluent COD can be comparedCrGao Yue -10~25mg/
L, level-one A and IV class water CODCrDiffer only by 20mg/L, BOD5Differ only by 4mg/L, IV class water water outlet CODCrAnd BOD5It is extremely unstable；
2) the carbon source kind selection of denitrification filter pool, the accurate dosage control of carbon source are very crucial, for BOD5Level-one A and IV class water are only
4mg/L is differed, directly influences water outlet CODCrRaising is how many, denitrifying carbon source utilization rate and whether can stably reaching standard core
It is crucial, it is necessary to accurate control；(4) denitrification and denitrogenation biological filter outlet water organic substance concentration increases, and later process unit is without reduction
CODCrAnd BOD5Exceeded measure；(5) since denitrification denitrogenation occurs under hypoxic/anaerobic environment, by denitrification depth
Waste water dissolved oxygen (DO) after denitrogenation is generally below 0.2mg/L, and the dissolved oxygen of IV class water otherwise less than 3mg/L, therefore need it
Its measure further improves the dissolved oxygen (DO) of sewage, and there is no refer to existing IV class water treatment technology in view of this key
Mark.
Invention content
The purpose of the present invention is to overcome the above shortcomings and to provide a kind of urban wastewater treatments up to standard to IV class water of surface water
Technique.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of process for town sewage treatment up to standard to IV class water of surface water, which is characterized in that the technique includes following
Step：
(1) town sewage is by sand, stone and the bulk particulate matter substance in pretreatment removal sewage；
(2) sewage is divided into two parts sewage after pre-processing；10%~40% sewage and the muddy water of secondary settling tank reflux are fully mixed
Enter pre- denitrification pond after conjunction, under anoxic conditions, be utilized respectively the organic matter in pretreating sewage, the nitric acid in reflux muddy water
Salt carries out pre- anti-nitration reaction；60%~90% sewage enters anaerobic pond after being mixed with pre-denitration pond water outlet, carries out releasing phosphorus reaction；
(3) the anaerobic pond water outlet enters anoxic pond, using carbon source in raw water, carries out denitrification denitrogenation reaction；In raw water
During carbon source deficiency, organic carbon source can be additionally added；
(4) the anoxic pond water outlet enters aerobic tank, carries out aerobic nitrification, synchronous nitration and denitrification, inhales phosphorus reaction, described
Aerobic tank dissolved oxygen is 1.5~4.0mg/L；The muddy water mixed solution of the aerobic tank is back to anoxic pond, reflux ratio for 100%~
400%；
(5) the aerobic tank water outlet enters secondary settling tank, realizes mud-water separation, the sludge part of precipitation flows back into pre- denitrification
Pre- denitrification pond, return sludge ratio are 30%~100%, and excess sludge periodically discharges；
(6) supernatant of secondary settling tank discharge enters magnetic or sand loading flocculation deep phosphorous removal sedimentation basin, removes remainder
SS and TP ensures water outlet SS and TP stably reaching standards；
(7) magnetic or sand loading flocculation deep phosphorous removal sedimentation basin water outlet enter denitrification and denitrogenation biological filter, carry out further
Ground depth removal SS and nitrate nitrogen, nitrogen is converted to using additional carbon source by remaining nitrate nitrogen；Additional carbon by filter tank into
The nitrate nitrogen on-line monitoring system of water end (W.E.) carries out linkage and is precisely controlled its dosage；The additional carbon in the denitrification denitrogenation filter tank
Preferably methanol or sodium acetate；
(8) denitrification and denitrogenation biological filter water outlet enters ozone pond, synchronizes disinfection, oxidation residual organic substances, improves
Oxygen in water reacts, and IV class water quality standard can be stably reached all referring to mark after ozone pond is handled；Or denitrification and denitrogenation biological filter
Water outlet enters " oxidation disinfection bath+oxygenation pond ", carries out disinfection, aoxidizes residual organic substances and part ammonia nitrogen, improves oxygen in water
Reaction；After " oxidation disinfection bath+oxygenation pond " processing IV class water quality standard is stably reached all referring to mark；Sewage after up to standard carries out outer
Row.
The pre-treatment step is pre-processed for sewage by grid, setting pot or primary sedimentation tank.
The medicament that the magnetic or sand loading flocculation deep phosphorous removal sedimentation basin add is one of magnetic kind or sand kind and iron system or aluminium
System, iron aluminium system salt.
The aerobic tank couples pond or aerobic sludge pond for aerobic mud film.
The denitrification and denitrogenation biological filter is upward flow denitrification and denitrogenation biological filter or lower to flow denitrification biofilter.
Beneficial effects of the present invention：
(1) it is intake using multiple spot reasonable distribution, raw water utilization of carbon source is more abundant.
(2) the configured pre- denitrification pond processing of the muddy water of secondary settling tank reflux, reflux kind is eliminated using the carbon source of raw water
Nitrate nitrogen in mud alleviates the inhibiting effect to anaerobic phosphorus release, and greatly improve anaerobic pond releases phosphorus effect；PolyP bacteria is improved good
Excessively inhale phosphorus effect in oxygen pond；Each function sludge age and dominant microflora control are more reasonable.
(3) anoxic pond makes full use of carbon source (raw water carbon source, supplementary carbon source) to carry out denitrification, denitrification dephosphorization reaction, nitre
Nitrogen removal is more abundant；Additional carbon can make up the deficiency of denitrifying carbon source, improve denitrification effect；Aerobic mud film coupling pond will
In a pond, anti-load impact and resistance to water temperature in winter are good, solve the problems, such as variation water quality for activated sludge and biological film coupling；Aerobic tank removes
Nitrification is inhaled outside the functions such as phosphorus, moreover it is possible to which stripping is attached to nitrogen on sludge, prevents Mud up-floating.
(4) magnetic kind or sand kind magnetic flocculation deep phosphorous removal sedimentation basin, by the use of magnetic kind or sand kind as nucleus so that magnetic powder or sand
Kind and the progress of phosphatization sediment flco are efficiently coprecipitated, are the floor spaces 1/20 of conventional coagulative precipitation tank, save more than 20%
Iron system or aluminium system salt, and magnetic kind or sand kind have 99% and the above rate of recovery；Treatment effect is more excellent, floor space smaller,
Convenient for industrialization and it is widely applied.
(5) denitrification and denitrogenation biological filter water inlet total nitrogen is fluctuation (wherein nitrate nitrogen, nitrite nitrogen, ammonia nitrogen, organic nitrogen
Concentration is also fluctuation), the present invention passes through the monitoring nitre state (NO that links onlinex -- N) index and then it is precisely controlled adding for carbon source
Amount solves water outlet (TN, COD caused by each index fluctuation of influent qualityCr、BOD5) problem of stably reaching standard is unable to, it can guarantee
It is discharged TN, CODCr、BOD5Etc. indexs stably reaching standard.Our company summarizes the experience according to long-term pilot scale research and engineer application and finds,
Relative to carbon sources such as acetic acid, glucose, sodium acetate and the economic benefit of methanol and utilization rate higher, and denitrification denitrogenation biological filter
The water outlet COD in pondCr、BOD5It is small to increase probability, is more easy to be precisely controlled that IV each index of class water is up to standard, this experiment and summary of experience can
Fundamentally solve most of problem of denitrification denitrogenation fluctuation of service in IV class hydraulic art.
(6) it solves in traditional IV class hydraulic art, denitrification and denitrogenation biological filter water outlet CODCr、BOD5Probability rising,
By setting subsequent processing units (oxidation, disinfection), oxidation raising organic matter, part ammonia nitrogen, and then reduce CODCr、BOD5Etc. referring to
Mark, solves the problems, such as out that water unstable is up to standard.
(7) it solves in traditional IV class hydraulic art, dissolved oxygen (DO) key index cannot be up to standard to IV class water quality standard
Requirement.
The present invention can fundamentally solve traditional IV class hydraulic art, and to go out water unstable up to standard and be difficult to up to standard all referring to marking
The requirement for reaching IV class water quality standard all referring to mark can be completely secured in problem.
Description of the drawings
Fig. 1 is the process for town sewage treatment flow chart up to standard to IV class water of surface water of the invention
Specific embodiment
Separation equipment is collected to a kind of magnetic loading sludge of the present invention below in conjunction with the accompanying drawings and processing method is further retouched
It states：
(1) town sewage is by sand, stone and the bulk particulate matter substance in pretreatment removal sewage；Ensure that the later stage is biochemical anti-
The stability answered；The pre-treatment step is pre-processed for sewage by grid, setting pot or primary sedimentation tank.
(2) sewage is divided into two parts sewage after pre-processing；A part of sewage (10%~40%) and the mud of secondary settling tank reflux
Water enters pre- denitrification pond after being sufficiently mixed, and (ss suspended solid and dissolubility are organic for the organic matter for being utilized respectively in pretreating sewage
Object) and reflux muddy water in nitrate (nitrate nitrogen, nitrite nitrogen) carry out pre- anti-nitration reaction, remove the nitre in returned sludge
Nitrogen, organic matter, mitigating the inhibition of later stage anaerobic phosphorus release influences, and is carried out at the same time aminating reaction；Another part sewage (60%~
90%) enter anaerobic pond after being mixed with pre-denitration pond water outlet, using the carbon source in raw water, carry out releasing phosphorus reaction, be carried out at the same time ammonia
Change reaction；
(3) the anaerobic pond water outlet enters anoxic pond, using carbon source in raw water, carries out denitrification denitrogenation reaction, will be in water
Nitrate nitrogen be converted to nitrogen removal, be carried out at the same time the reactions such as ammonification；In raw water during carbon source deficiency, organic carbon source can be additionally added；
(4) the anoxic pond water outlet enters aerobic tank, carries out aerobic nitrification, synchronous nitration and denitrification, inhales phosphorus reaction, simultaneously
Sludge Surface nitrogen is released into the water surface, the aerobic tank dissolved oxygen is 1.5~4.0mg/L；The muddy water mixing of the aerobic tank
Liquid is back to anoxic pond, and reflux ratio is 100%~400%；
(5) the aerobic tank water outlet enters secondary settling tank, realizes mud-water separation, the sludge part of precipitation flows back into pre- denitrification
Pre- denitrification pond, return sludge ratio are 30%~100%, and excess sludge periodically discharges；
(6) supernatant of secondary settling tank discharge enters magnetic or sand loading flocculation deep phosphorous removal sedimentation basin, removes remainder
SS and TP ensures water outlet SS and TP stably reaching standards；The medicament that the magnetic or sand loading flocculation deep phosphorous removal sedimentation basin add is magnetic
One of kind or sand kind and iron system or aluminium system, iron aluminium system salt；By the use of magnetic kind or sand kind as nucleus so that magnetic powder or sand kind and phosphatization
The progress of sediment flco is efficiently coprecipitated, greatly improves the removal efficiency and sedimentation time of phosphorus, while reduce the usage amount of medicament, sand
Kind or the magnetic kind rate of recovery also above 99% and more than.
(7) magnetic or sand loading flocculation deep phosphorous removal sedimentation basin water outlet enter denitrification and denitrogenation biological filter, carry out further
Ground depth removal SS and nitrate nitrogen, nitrogen is converted to using additional carbon source by remaining nitrate nitrogen；The denitrification denitrogenation biology
Filter tank is upward flow denitrification and denitrogenation biological filter or lower to flow denitrification biofilter；Additional carbon passes through filter tank water inlet end
" nitrate nitrogen on-line monitoring system " progress " linkage is precisely controlled its dosage ", caused by solving the problems, such as variation water quality from core source
Go out water unstable problem；The additional carbon in the denitrification denitrogenation filter tank is preferably methanol or sodium acetate, the pilot scale of our company
Research and engineering experience show compared to other carbon source kinds, using two kinds of carbon sources, for reducing denitrification denitrogenation biological filter
Pond is discharged CODCrAnd BOD5Probability is of great significance；
(8) denitrification and denitrogenation biological filter water outlet enters ozone pond, synchronizes disinfection, oxidation residual organic substances, improves
Oxygen in water reacts, and IV class water quality standard can be stably reached all referring to mark after ozone pond is handled；Or denitrification and denitrogenation biological filter
Water outlet enters " oxidation disinfection bath+oxygenation pond ", carries out disinfection, aoxidizes residual organic substances and part ammonia nitrogen, improves oxygen in water
Reaction；After " oxidation disinfection bath+oxygenation pond " processing IV class water quality standard is stably reached all referring to mark；And then it is decided from subsequent port solution
Water fluctuation problem solves denitrification and denitrogenation biological filter and leading portion effluent quality fluctuation problem, after the measure, it is ensured that each
It is arranged outside index stably reaching standard.
The present invention provides a kind of thinking and methods, and there are many method and the approach for implementing the technical solution, more than institute
State only is the preferred embodiment of the present invention, it is noted that for those skilled in the art, is not being departed from
Under the premise of the principle of the invention, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the guarantor of the present invention
Range is protected, all undefined components in this embodiment can be implemented in the prior art.
Claims (5)
1. a kind of process for town sewage treatment up to standard to IV class water of surface water, which is characterized in that the technique includes following step
Suddenly：
(1) town sewage is by sand, stone and the bulk particulate matter substance in pretreatment removal sewage；
(2) sewage is divided into two parts sewage after pre-processing；The muddy water that 10%~40% sewage flows back with secondary settling tank is sufficiently mixed
Enter pre- denitrification pond afterwards, be utilized respectively the organic matter in pretreating sewage, the nitrate in reflux muddy water carries out pre- denitrification
Reaction；60%~90% sewage enters anaerobic pond after being mixed with pre-denitration pond water outlet, carries out releasing phosphorus reaction；
(3) the anaerobic pond water outlet enters anoxic pond, using carbon source in raw water, carries out denitrification denitrogenation reaction；Carbon source in raw water
When insufficient, organic carbon source can be additionally added；
(4) the anoxic pond water outlet enters aerobic tank, carries out aerobic nitrification, synchronous nitration and denitrification, inhales phosphorus reaction, described aerobic
Pond dissolved oxygen is 1.5~4.0mg/L；The muddy water mixed solution of the aerobic tank is back to anoxic pond, reflux ratio for 100%~
400%；
(5) aerobic tank water outlet enters secondary settling tank, realizes mud-water separation, and it is pre- anti-that the sludge part of precipitation flows back into pre- denitrification
Nitrification tank, return sludge ratio are 30%~100%, and excess sludge periodically discharges；
(6) secondary settling tank discharge supernatant enter magnetic or sand loading flocculation deep phosphorous removal sedimentation basin, remove remainder SS and
TP ensures water outlet SS and TP stably reaching standards；
(7) magnetic or sand loading flocculation deep phosphorous removal sedimentation basin water outlet enter denitrification and denitrogenation biological filter, carry out further deep
Degree removal SS and nitrate nitrogen, nitrogen is converted to using additional carbon source by remaining nitrate nitrogen；Additional carbon passes through filter tank water inlet end
Nitrate nitrogen on-line monitoring system carry out linkage be precisely controlled its dosage；The additional carbon in the denitrification denitrogenation filter tank is preferred
For methanol or sodium acetate；
(8) denitrification and denitrogenation biological filter water outlet enters ozone pond, synchronizes disinfection, oxidation residual organic substances, improves in water
Dissolved oxygen reacts, and IV class water quality standard can be stably reached all referring to mark after ozone pond is handled；Or denitrification and denitrogenation biological filter water outlet
Into " oxidation disinfection bath+oxygenation pond ", carry out disinfection, aoxidize residual organic substances, improve oxygen in water reaction；Through " oxidation disappears
After the processing of malicious pond+oxygenation pond " IV class water quality standard is stably reached all referring to mark；Sewage after up to standard carries out outer arrange.
2. the process for town sewage treatment up to standard to IV class water of surface water according to claim 1, which is characterized in that described
Pre-treatment step is pre-processed for sewage by grid, setting pot or primary sedimentation tank.
3. the process for town sewage treatment up to standard to IV class water of surface water according to claim 1, which is characterized in that described
The medicament that magnetic or sand loading flocculation deep phosphorous removal sedimentation basin add is one of magnetic kind or sand kind and iron system or aluminium system, iron aluminium system salt.
4. the process for town sewage treatment up to standard to IV class water of surface water according to claim 1, which is characterized in that described
Aerobic tank couple pond or aerobic sludge pond for aerobic mud film.
5. the process for town sewage treatment up to standard to IV class water of surface water according to claim 1, which is characterized in that described
Denitrification and denitrogenation biological filter is upward flow denitrification and denitrogenation biological filter or lower to flow denitrification biofilter.
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| CN108911142A (en) * | 2018-08-23 | 2018-11-30 | 北京东方复地环境科技有限公司 | A kind of two-part strengthened denitrification intelligence artificial wet land system |
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| CN110407419A (en) * | 2019-09-02 | 2019-11-05 | 江苏金博源环保科技有限公司 | IV class standard surface water sewage treatment process and equipment |
| CN110589967A (en) * | 2019-08-12 | 2019-12-20 | 浙江英玛特生物科技有限公司 | Novel efficient deep denitrification process and system |
| CN111170590A (en) * | 2020-03-03 | 2020-05-19 | 安徽绿衡环保科技有限公司 | Ultra-high-filtration-speed IV-class upgrading modified nitrogen and phosphorus removal device and treatment process thereof |
| CN111186958A (en) * | 2019-12-31 | 2020-05-22 | 中冶南方工程技术有限公司 | Steel comprehensive sewage advanced treatment method and system |
| CN111484186A (en) * | 2019-01-28 | 2020-08-04 | 吉林省大河智能科技有限公司 | Biological treatment method for domestic sewage |
| CN111499092A (en) * | 2020-03-31 | 2020-08-07 | 安徽国祯环保节能科技股份有限公司 | Oxidation ditch sewage treatment system and treatment method thereof |
| CN111547933A (en) * | 2020-04-10 | 2020-08-18 | 安徽国祯环保节能科技股份有限公司 | AAO sewage treatment system and treatment method thereof |
| CN111592185A (en) * | 2020-05-26 | 2020-08-28 | 水艺控股集团股份有限公司 | Integrated sewage treatment device and method for deep nitrogen and phosphorus removal |
| CN112661343A (en) * | 2019-10-16 | 2021-04-16 | 唐山曹妃甸天川环保科技有限公司 | Advanced treatment system and method for caprolactam production wastewater |
| CN114436472A (en) * | 2022-01-21 | 2022-05-06 | 浙江天地环保科技股份有限公司 | Movable advanced sewage treatment system based on embedded microorganism construction method |
| CN114538614A (en) * | 2022-02-07 | 2022-05-27 | 黑龙江工程学院 | Continuous flow reinforced synchronous nitrification and denitrification dephosphorization device and control method |
| CN115448550A (en) * | 2022-10-21 | 2022-12-09 | 华邦古楼新材料有限公司 | Treatment method for enhancing biological denitrification of sewage |
| CN115466009A (en) * | 2022-09-01 | 2022-12-13 | 上海莲立环境有限公司 | Municipal sludge hydrothermal carbonization pressure filtrate nano tube standard-reaching treatment process and treatment system thereof |
| CN115521026A (en) * | 2022-09-30 | 2022-12-27 | 华邦古楼新材料有限公司 | Sewage treatment method for bioactive phosphorus and nitrogen |
| CN116395831A (en) * | 2023-06-07 | 2023-07-07 | 烟台市弗兰德电子科技有限公司 | Intelligent control system and method for carbon source addition in sewage treatment process |
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| CN109205968A (en) * | 2018-11-23 | 2019-01-15 | 韩晓宇 | A kind of sewage water denitrification carbon source adds technique |
| CN111484186A (en) * | 2019-01-28 | 2020-08-04 | 吉林省大河智能科技有限公司 | Biological treatment method for domestic sewage |
| CN110589967A (en) * | 2019-08-12 | 2019-12-20 | 浙江英玛特生物科技有限公司 | Novel efficient deep denitrification process and system |
| CN110407419A (en) * | 2019-09-02 | 2019-11-05 | 江苏金博源环保科技有限公司 | IV class standard surface water sewage treatment process and equipment |
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| CN111186958A (en) * | 2019-12-31 | 2020-05-22 | 中冶南方工程技术有限公司 | Steel comprehensive sewage advanced treatment method and system |
| CN111170590A (en) * | 2020-03-03 | 2020-05-19 | 安徽绿衡环保科技有限公司 | Ultra-high-filtration-speed IV-class upgrading modified nitrogen and phosphorus removal device and treatment process thereof |
| CN111499092A (en) * | 2020-03-31 | 2020-08-07 | 安徽国祯环保节能科技股份有限公司 | Oxidation ditch sewage treatment system and treatment method thereof |
| CN111547933B (en) * | 2020-04-10 | 2021-06-18 | 中节能国祯环保科技股份有限公司 | AAO sewage treatment system and treatment method thereof |
| CN111547933A (en) * | 2020-04-10 | 2020-08-18 | 安徽国祯环保节能科技股份有限公司 | AAO sewage treatment system and treatment method thereof |
| CN111592185A (en) * | 2020-05-26 | 2020-08-28 | 水艺控股集团股份有限公司 | Integrated sewage treatment device and method for deep nitrogen and phosphorus removal |
| CN114436472A (en) * | 2022-01-21 | 2022-05-06 | 浙江天地环保科技股份有限公司 | Movable advanced sewage treatment system based on embedded microorganism construction method |
| CN114538614B (en) * | 2022-02-07 | 2023-07-28 | 黑龙江工程学院 | Continuous flow enhanced synchronous nitrification and denitrification dephosphorization device and control method |
| CN114538614A (en) * | 2022-02-07 | 2022-05-27 | 黑龙江工程学院 | Continuous flow reinforced synchronous nitrification and denitrification dephosphorization device and control method |
| CN115466009A (en) * | 2022-09-01 | 2022-12-13 | 上海莲立环境有限公司 | Municipal sludge hydrothermal carbonization pressure filtrate nano tube standard-reaching treatment process and treatment system thereof |
| CN115521026A (en) * | 2022-09-30 | 2022-12-27 | 华邦古楼新材料有限公司 | Sewage treatment method for bioactive phosphorus and nitrogen |
| CN115448550A (en) * | 2022-10-21 | 2022-12-09 | 华邦古楼新材料有限公司 | Treatment method for enhancing biological denitrification of sewage |
| CN115448550B (en) * | 2022-10-21 | 2024-04-16 | 华邦古楼新材料有限公司 | Treatment method for strengthening biological denitrification of sewage |
| CN116395831B (en) * | 2023-06-07 | 2023-08-29 | 烟台市弗兰德电子科技有限公司 | Intelligent control system and method for carbon source addition in sewage treatment process |
| CN116395831A (en) * | 2023-06-07 | 2023-07-07 | 烟台市弗兰德电子科技有限公司 | Intelligent control system and method for carbon source addition in sewage treatment process |
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Application publication date: 20180710 |