CN105330108A - Method for treating domestic sewage through anaerobic-contact oxidation bio-membrane reactor and treatment device - Google Patents
Method for treating domestic sewage through anaerobic-contact oxidation bio-membrane reactor and treatment device Download PDFInfo
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- CN105330108A CN105330108A CN201510808776.0A CN201510808776A CN105330108A CN 105330108 A CN105330108 A CN 105330108A CN 201510808776 A CN201510808776 A CN 201510808776A CN 105330108 A CN105330108 A CN 105330108A
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- 239000010865 sewage Substances 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 66
- 230000003647 oxidation Effects 0.000 title claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 29
- 239000012528 membrane Substances 0.000 title abstract 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 91
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 88
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 20
- 239000000701 coagulant Substances 0.000 claims abstract description 19
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 14
- 231100000719 pollutant Toxicity 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims abstract description 8
- 239000010802 sludge Substances 0.000 claims abstract description 8
- 239000006228 supernatant Substances 0.000 claims abstract description 8
- 230000005484 gravity Effects 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 18
- 230000000813 microbial effect Effects 0.000 claims description 18
- 230000000694 effects Effects 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 10
- 239000006185 dispersion Substances 0.000 claims description 8
- 230000002153 concerted effect Effects 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 7
- KCZFLPPCFOHPNI-UHFFFAOYSA-N alumane;iron Chemical compound [AlH3].[Fe] KCZFLPPCFOHPNI-UHFFFAOYSA-N 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 13
- 239000011574 phosphorus Substances 0.000 abstract description 13
- 239000007788 liquid Substances 0.000 abstract description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000012856 packing Methods 0.000 abstract description 5
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 description 7
- 230000035484 reaction time Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 241000894006 Bacteria Species 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000005842 biochemical reaction Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 238000006396 nitration reaction Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- 241000894007 species Species 0.000 description 4
- 239000003814 drug Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a method for treating domestic sewage through an anaerobic-contact oxidation bio-membrane reactor. The method comprises treatment steps as follows: 1), collected town sewage is subjected to water regulation and storage and pre-sedimentation in a high regulation and storage tank; 2), the sewage self-flows into an anaerobic reaction area under the action of gravity, and anaerobic biological packing is arranged in the anaerobic reaction area; 3), the sewage upwards flows into an aerobic reaction area under the action of water pressure, a rotating biological disc is arranged in the aerobic reaction area, the sewage entering the aerobic reaction area after anaerobic treatment has the contact reaction with a biological membrane, and the pollutant removing function with higher efficiency is realized; 4), the sewage is introduced into an efficient sedimentation area and has the hybrid reaction through addition of a coagulant, after a mixed liquid is subjected to mud-water separation, a liquid supernatant is discharged up to the standard, and residual sludge is pumped out. When the method is adopted to treat the domestic sewage, the conventional index of effluent quality meets first-level A discharge standard of the pollutant discharge standard of urban sewage treatment plant (GB18918-2002), and the requirement for efficient stable nitrogen and phosphorus removal of wastewater is met.
Description
Technical field
The present invention relates to a kind of processing method processing sanitary sewage, specifically one utilizes anaerobism-catalytic oxidation biofilm reactor process sanitary sewage method and treatment unit.
Background technology
Samll cities and towns' water surrounding, when being paid close attention to by shortage for a long time, presents contaminated serious trend gradually.Affect by economical or other factors, many samll cities and towns of China are difficult to process sanitary wastewater.A large amount of sanitary sewages directly enters the water bodys such as rivers lake, causes larger pollution to environment.
Town domestic sewage has discharge dispersion, the sewage water yield is less than normal, change of water quality fluctuation is large, because using chemical fertilizer, agricultural chemicals and make containing a certain amount of nitrogen, phosphorus and other organism, and the feature such as biodegradability is strong, integrated wastewater treatment equipment is specially adapted to the sanitary wastewater process of this dispersiveness.
China starts progressively to use the Technology of integrated sewage treating apparatus to process small town sewage in recent years, and these integration apparatus and technique thereof develop into the recombining process of multiple methods combining gradually from originally single activated sludge process or biomembrance process.It has, and floor space is little, technique is complete, control is flexible and the feature of Integral movable.But the technique suitability of existing installation and employing limitation is comparatively large, technique arrange general more single, not ideal enough to the final treatment effect of sewage, especially be difficult to reach requirement in denitrogenation dephosphorizing, also do not possess the ability of good reply influent quality fluctuation.
Summary of the invention
Technical problem to be solved by this invention is to provide one and utilizes anaerobism-catalytic oxidation biofilm reactor process sanitary sewage method and treatment unit, the method and device can improve sanitary sewage disposal efficiency, intensified denitrification and dephosphorization effect, and there is enough reply influent quality fluctuation abilities.
The present invention solves the problems of the technologies described above with following technical scheme:
The present invention utilizes anaerobism-catalytic oxidation biofilm reactor process sanitary sewage method and treatment unit, and it comprises following treatment step:
1) the small towns sewage collected is carried out the water yield in high level storage pond to regulate and store and preliminary precipitation;
2) by step 1) sewage after process enters anaerobic reaction district by flow by gravity, and anaerobic reaction district is provided with anaerobe filler for anaerobion apposition growth;
3) by step 2) sewage after process upwards flows into aerobic reactor zone by hydraulic pressure, aerobic reactor zone is provided with blodisc, after anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and realize more high efficiency pollutant removal effect;
4) through step 3) biochemical treatment after, sewage is introduced High-rate sedimentation district, the entrance in High-rate sedimentation district is provided with coagulant dosage mouth, hybrid reaction is carried out by dosing coagulant, mixed solution is after mud-water separation process, and supernatant liquor qualified discharge, excess sludge is extracted out.
Step 1) high level storage pond and step 2) anaerobic reaction district between have the differential water pressures of 1 ~ 3m.
The storage capacity in described high level storage pond is 6h flooding quantity.
Step 2) anaerobic reaction district in anaerobe media-filling rate be 50 ~ 80%, HRT be 4 ~ 6 hours.
Described anaerobic reaction district dissolved oxygen concentration controls 6.5 ~ 7.2 at below 0.5mg/L, pH.
Described step 3) blodisc rotating speed in aerobic reactor zone is 1.5 ~ 3 revs/min, the perimeter line speed of blodisc is set to 15 ms/min, and the HRT of aerobic reactor zone is 8 ~ 10 hours.
The dish axle of described blodisc exceeds the water surface, and card has 40% to soak in water, and 60% exposes in atmosphere, and microbial film total thickness reaches 0.5 ~ 1.0mm.
Circulation loop passage is provided with between described aerobic reactor zone and anaerobic reaction district, make the sewage backflow of aerobic reactor in anaerobic reaction district, the sewage of backflow, by anaerobe filler cutting dispersion, forms turbulent flow on a large scale, forms concerted reaction in anaerobic reaction district.
The internal circulating load of described circulation loop passage controls between 50 ~ 200%, can increase internal recycle amount as one sees fit and extend 2 ~ 5 hours reaction times to promote treatment effect under water quality situation is special.
Step 4) in, the coagulating agent added is aluminium iron polychloride, and dosage is 5 ~ 10mg/L.
Anaerobism-catalytic oxidation biofilm reactor that the inventive method adopts comprise connect successively anaerobic reaction district 2, aerobic reactor zone 6 and High-rate sedimentation district 13, anaerobic reaction district 2 is positioned at the below of reactor, and is provided with water-in 1, is inside provided with anaerobe filler; Aerobic reactor zone 6 is connected with aerobic reactor zone 6 and is positioned at the top in anaerobic reaction district 2, is provided with blodisc in it; The outlet of aerobic reactor zone 6 is connected with High-rate sedimentation district 13, and the entrance in High-rate sedimentation district 13 is provided with coagulant dosage mouth 10, and the top in High-rate sedimentation district 13 is provided with water outlet 14, and bottom is provided with excess sludge discharge mouth 15.
Treatment process of the present invention compared with prior art, has following beneficial effect:
(1) energy consumption is low: first by the energy storage in high level storage pond, and system can realize ultralow power and run; Its subsystem, without the need to aeration, does not need returned sluge, system cloud gray model energy consumption is down to minimum, and ton water current consumption is minimum is low to moderate 0.1kWh.
(2) tupe can be selected to control flexibly: the situation according to water inlet selects ultralow power regular run mode depending on demand, or select the operational mode of efficient decarburization dephosphorization, between aerobic reactor zone and anaerobic reaction district, be provided with circulation loop passage, reached the object of intensified denitrification and dephosphorization efficiency by internal circulation system.
(3) anti impulsion load ability is strong: first have Regulation Function in high level storage pond, if there is the situation of fluctuation in influent quality, and the controllable adjustable process water yield; Secondly be furnished with light filler in anaerobic treatment district, in conjunction with the internal circulation system formed with aerobic zone, have extremely strong adaptability and operation stability to the change of influent quality, the water yield.
(4) treatment process is to sanitary sewage disposal excellent effect, and sewage five basic conventional indexs of water quality (comprising pH, COD, ammonia nitrogen, SS, total phosphorus) after treatment meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level emission standard A.
Accompanying drawing explanation
Fig. 1 is that the present invention utilizes anaerobism-catalytic oxidation biofilm reactor process sanitary sewage method process flow diagram.
Fig. 2 is the structural representation of anaerobism-catalytic oxidation biofilm reactor that the inventive method adopts.
In figure: the entrance end of 1-water-in, 2-anaerobic reaction district, 3-anaerobe filler, the vertical water inlet pipe of 4-, 5-internal circulation pump, 6-aerobic reactor zone, 7-blodisc, 8-check valve, the water-in of 9-efficient settler, 10-coagulant dosage mouth, 11-line mixer, 12-water distributor, 13-High-rate sedimentation district, 14-water outlet, 15-excess sludge discharge mouth, the vertical water inlet pipe of 16-.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
As shown in Figure 2, anaerobism of the present invention-catalytic oxidation biofilm reactor is vertical structure, it comprise connect successively anaerobic reaction district 2, aerobic reactor zone 6 and High-rate sedimentation district 13, anaerobic reaction district 2 is positioned at the below of reactor, the water-in 1 be connected with high level storage pond is provided with on the left of it, have the differential water pressures of 1-3m between high level storage pond and anaerobic reaction district 2, the storage capacity in high level storage pond is 6h flooding quantity.Anaerobe filler 3 is provided with in anaerobic reaction district 2, be positioned at the water outlet of water-in 1 opposite side by guide rod fixed installation internal circulation pump 5, and be provided with vertical water inlet pipe 16, internal circulation pump 5 is all connected with aerobic reactor zone 6 with the outlet of vertical water inlet pipe 16, the entrance end 4 of vertical water inlet pipe is positioned at anaerobic reaction district 2, the exit end of vertical water inlet pipe is positioned at top, aerobic reactor zone 6, the sewage of aerobic reactor zone 6 enters aerobic reactor zone 6 by hydraulic pressure, thus hands-freely rise power, reduce and run power source.
Aerobic reactor zone 6 is positioned at the top in anaerobic reaction district 2, and aerobic reactor zone 6 is provided with several blodisc 7, blodisc 7 apposition growth microbial film, and blodisc rotating speed 1.5 ~ 3 revs/min, the perimeter line speed of dish is set to about 15 ms/min.Dish axle exceeds the water surface, and card 40% is soaked in water, and 60% exposes in atmosphere.When dish axle rotates, card alternately contacts with useless water and air.The membranoid substance that card is formed for attached microbial growth covered, and adhere to liquid film, aerobe film, double oxygen microbial film, anaerob film from outside to inside, microbial film total thickness can reach 0.5 ~ 1.0mm.The HRT of aerobic reactor zone is 8 ~ 10 hours.After anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and can realize more high efficiency pollutant removal effect.
Aerobic reactor zone 6 is provided with the check valve 8 be connected with anaerobic reaction district 2 in its water outlet side, make can be formed between aerobic reactor zone 6 and anaerobic reaction district 2 communicate up and down and form circulation loop passage.High-rate sedimentation district 13 is positioned at the side of aerobic reactor zone 6, arrange dividing plate between the top in High-rate sedimentation district 13 and aerobic reactor zone 6 to separate, the middle part in High-rate sedimentation district 13 is connected with the water outlet of aerobic reactor zone 6, the water outlet of aerobic reactor zone 6 flows into High-rate sedimentation district, some water outlet can also pass back into anaerobic reaction district 2 by check valve 8.Top, High-rate sedimentation district 13 is provided with the efficient settler of swash plate or other structure, makes mixed solution carry out mud-water separation.The entrance end of line mixer 11 is connected with the water outlet of aerobic reactor zone 6, and is provided with coagulant dosage mouth 10, and coagulating agent puts into line mixer 11 by coagulant dosage mouth 10.The exit end of line mixer 11 is connected with water distributor 12, and the outlet of water distributor 12 is connected with the water-in 9 of efficient settler.The top in High-rate sedimentation district 13 is provided with water outlet 14, and the supernatant liquor in High-rate sedimentation district 13 emits through water outlet 14, and the bottom in High-rate sedimentation district 13 is provided with excess sludge discharge mouth 15.
Depending on sewage quality situation, select when sewerage nitrogen and phosphor concentration is higher to start internal circulation pump 5 when starting internal circulation system, and open check valve 4, aerobic reactor zone effluent recycling is to anaerobic reaction district, the sewage of backflow is by anaerobe filler cutting dispersion, turbulent flow is on a large scale formed in anaerobic reaction district, be conducive to that sewage is more uniformly contacted with anaerobion and the various biochemical reaction of series of complex occurs, comprise the decomposition of larger molecular organics, aminating reaction, phosphorus is released addicted to phosphorus bacterium, and the anti-nitration reaction of generating unit component and Anammox reaction, the concerted reaction formed.Internal circulating load and reaction times realize controlling flexibly, control between 50 ~ 200% under internal recycle amount regular situation, can increase internal recycle amount as one sees fit and extend 2 ~ 5 hours reaction times to promote treatment effect under water quality situation is special.Both intensified denitrification and dephosphorization efficiency, and the complicacy increasing reactor assembly microbe species, when tackling different influent quality situation, the anti-fluctuation ability of system, namely stability is ensured.
When selecting not start internal circulation system, sewage enters aerobic reactor zone 6 by vertical water inlet pipe 16 automatically.
Composition graphs 1 and following instance are described further the inventive method:
Embodiment 1:
Adopt the inventive method process township sanitary sewage, the former water quality situation of sewage: pH:7.2, CODcr:280mg/L, BOD5:150mg/L, SS:58mg/L, NH
4 +-N:28mg/L, TP:5.5mg/L.
Start the high-efficient denitrification and dephosphorization pattern of internal circulation system:
1) the small towns sewage collected carries out the water yield in high level storage pond and regulates and stores and preliminary precipitation, with subsequent step 2) reactor form the differential water pressures of 3m.
2) controlling through step 1) sewage of preliminary precipitation enters anaerobism-catalytic oxidation biofilm reactor by run by gravity.First sewage enter reactor anaerobic reaction district, anaerobic reaction district arranges anaerobe filler for anaerobion apposition growth, and anaerobe filler is 80%, HRT at anaerobic reaction district filling ratio is 6 hours, anaerobic reaction district dissolved oxygen concentration is that 0.3mg/L, pH control to be 6.5; The sewage that the sewage mixing aerobic zone internal recycle entering anaerobic zone returns forms turbulent flow on a large scale by the cutting of biologic packing material dispersion thus in anaerobic reaction district, be beneficial to and sewage more uniformly contacted with anaerobion the various biochemical reaction of series of complex occurs, comprise the decomposition of larger molecular organics, aminating reaction, addicted to the anti-nitration reaction releasing phosphorus and generating unit component of phosphorus bacterium and Anammox reaction, the concerted reaction of formation.
The sewage in anaerobic reaction district enters aerobic reactor zone by hydraulic pressure by the vertical water inlet pipe risen.
Aerobic reactor zone arranges blodisc, blodisc rotating speed 3 revs/min, and card 40% is soaked in water, and 60% exposes in atmosphere.When dish axle rotates, card alternately contacts with useless water and air.The membranoid substance that card is formed for attached microbial growth covered, and adhere to liquid film, aerobe film, double oxygen microbial film, anaerob film from outside to inside, microbial film total thickness reaches 1.0mm.The HRT of aerobic reactor zone is 10 hours.After anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and can realize more high efficiency pollutant removal effect.
Start up system internal recycle, aerobic reactor zone effluent recycling is to anaerobic reaction district, and controlling under internal recycle amount regular situation is between 50%, and extends 2 hours reaction times to promote treatment effect.Both intensified denitrification and dephosphorization efficiency, and the complicacy increasing reactor assembly microbe species, when tackling different influent quality situation, the anti-fluctuation ability of system, namely stability is ensured.
After biochemical treatment, sewage enters the High-rate sedimentation district of anaerobism-catalytic oxidation biofilm reactor, in settling region, water inlet segment arranges coagulant dosage, add medicament and select novel coagulant aluminium iron polychloride, dosage is 5mg/L, hybrid reaction in line mixer, enters efficient sedimentation tank from settling region water distributor water distribution.Swash plate filled by settling tank, after mixed solution carries out mud-water separation, and supernatant liquor qualified discharge.
After treatment, effluent quality is sewage: pH:7.0, COD
cr: 45mg/L, BOD
5: 10mg/L, SS:10mg/L, NH
4 +-N:4.5mg/L, TP:0.5mg/L.Meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level emission standard A.
Embodiment 2:
Adopt the inventive method process township sanitary sewage, the former water quality situation of sewage: COD
cr: 160mg/L, BOD
5: 100mg/L, NH
4 +-N:16mg/L, TP:3mg/L.
Adopt super low energy consumption operational mode, namely do not start internal circulation system.
1) the small towns sewage collected carries out the water yield in high level storage pond and regulates and stores and preliminary precipitation, with subsequent step 2) reactor form the differential water pressures of 1m.
2) controlling through step 1) sewage of preliminary precipitation enters anaerobism-catalytic oxidation biofilm reactor by run by gravity.First sewage enter reactor anaerobic reaction district, anaerobic reaction district arranges anaerobe filler for anaerobion apposition growth, and anaerobe filler is 50%, HRT at anaerobic reaction district filling ratio is 4 hours, anaerobic reaction district dissolved oxygen concentration is 7.2 at 0.5mg/L, pH; The sewage that the sewage mixing aerobic zone internal recycle entering anaerobic zone returns forms turbulent flow on a large scale by the cutting of biologic packing material dispersion thus in anaerobic reaction district, be beneficial to and sewage more uniformly contacted with anaerobion the various biochemical reaction of series of complex occurs, comprise the decomposition of larger molecular organics, aminating reaction, addicted to the anti-nitration reaction releasing phosphorus and generating unit component of phosphorus bacterium and Anammox reaction, the concerted reaction of formation.
The sewage in anaerobic reaction district enters aerobic reactor zone by hydraulic pressure by the vertical water inlet pipe risen.Aerobic reactor zone blodisc rotating speed 1.5 revs/min.When dish axle rotates, card alternately contacts with useless water and air.The membranoid substance that card is formed for attached microbial growth covered, and adhere to liquid film, aerobe film, double oxygen microbial film, anaerob film from outside to inside, microbial film total thickness can reach 0.5mm.The HRT of aerobic reactor zone is 8 hours.After anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and realize more high efficiency pollutant removal effect.
After biochemical treatment, sewage enters the High-rate sedimentation district of anaerobism-catalytic oxidation biofilm reactor, enters efficient sedimentation tank from settling region water distributor water distribution.Swash plate filled by settling tank, after mixed solution carries out mud-water separation, and supernatant liquor qualified discharge.
Sewage after treatment, COD
cr: 35mg/L, BOD
5: 8mg/L, NH
4 +-N:4.6mg/L, TP:0.45mg/L.Meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level emission standard A.
Embodiment 3:
Adopt the inventive method process urban wastewater treatment firm sanitary sewage, the former water quality situation of sewage: pH:7.1, CODcr:350mg/L, BOD
5: 190mg/L, SS:70mg/L, NH
4 +-N:35mg/L, TP:5mg/L.
Start the high-efficient denitrification and dephosphorization pattern of internal circulation system:
1) the small towns sewage collected carries out the water yield in high level storage pond and regulates and stores and preliminary precipitation, with subsequent step 2) reactor form the differential water pressures of 2m.
2) controlling through step 1) sewage of preliminary precipitation enters anaerobism-catalytic oxidation biofilm reactor by run by gravity.First sewage enter reactor anaerobic reaction district, anaerobic reaction district arranges anaerobe filler for anaerobion apposition growth, and anaerobe filler is 60%, HRT at anaerobic reaction district filling ratio is 5 hours, anaerobic reaction district dissolved oxygen concentration is that 0.4mg/L, pH control to be 6.7; The sewage that the sewage mixing aerobic zone internal recycle entering anaerobic zone returns forms turbulent flow on a large scale by the cutting of biologic packing material dispersion thus in anaerobic reaction district, be beneficial to and sewage more uniformly contacted with anaerobion the various biochemical reaction of series of complex occurs, comprise the decomposition of larger molecular organics, aminating reaction, addicted to the anti-nitration reaction releasing phosphorus and generating unit component of phosphorus bacterium and Anammox reaction, the concerted reaction of formation.
The sewage in anaerobic reaction district enters aerobic reactor zone by hydraulic pressure by the vertical water inlet pipe risen.
Aerobic reactor zone arranges blodisc, blodisc rotating speed 2.5 revs/min, and card 40% is soaked in water, and 60% exposes in atmosphere.When dish axle rotates, card alternately contacts with useless water and air.The membranoid substance that card is formed for attached microbial growth covered, and adhere to liquid film, aerobe film, double oxygen microbial film, anaerob film from outside to inside, microbial film total thickness reaches 0.8mm.The HRT of aerobic reactor zone is 9 hours.After anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and can realize more high efficiency pollutant removal effect.
Start up system internal recycle, aerobic reactor zone effluent recycling is to anaerobic reaction district, and controlling under internal recycle amount regular situation is 200%, and extends 5 hours reaction times to promote treatment effect.Both intensified denitrification and dephosphorization efficiency, and the complicacy increasing reactor assembly microbe species, when tackling different influent quality situation, the anti-fluctuation ability of system, namely stability is ensured.
After biochemical treatment, sewage enters the High-rate sedimentation district of anaerobism-catalytic oxidation biofilm reactor, in settling region, water inlet segment arranges coagulant dosage, add medicament and select novel coagulant aluminium iron polychloride, dosage is 10mg/L, hybrid reaction in line mixer, enters efficient sedimentation tank from settling region water distributor water distribution.Swash plate filled by settling tank, after mixed solution carries out mud-water separation, and supernatant liquor qualified discharge.
After treatment, effluent quality is sewage: pH:7.0, COD
cr: 39mg/L, BOD
5: 8mg/L, SS:9mg/L, NH
4 +-N:3.5mg/L, TP:0.42mg/L.Meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level emission standard A.
Embodiment 4:
Adopt the inventive method process Residential areas sewage work sanitary sewage, the former water quality situation of sewage: pH:6.8, CODcr:330mg/L, BOD
5: 200mg/L, SS:63mg/L, NH
4 +-N:28mg/L, TP:4mg/L.
Start the high-efficient denitrification and dephosphorization pattern of internal circulation system:
1) the small towns sewage collected carries out the water yield in high level storage pond and regulates and stores and preliminary precipitation, with subsequent step 2) reactor form the differential water pressures of 1m.
2) controlling through step 1) sewage of preliminary precipitation enters anaerobism-catalytic oxidation biofilm reactor by run by gravity.First sewage enter reactor anaerobic reaction district, anaerobic reaction district arranges anaerobe filler for anaerobion apposition growth, and anaerobe filler is 60%, HRT at anaerobic reaction district filling ratio is 5 hours, anaerobic reaction district dissolved oxygen concentration is that 0.4mg/L, pH control to be 6.8; The sewage that the sewage mixing aerobic zone internal recycle entering anaerobic zone returns forms turbulent flow on a large scale by the cutting of biologic packing material dispersion thus in anaerobic reaction district, be beneficial to and sewage more uniformly contacted with anaerobion the various biochemical reaction of series of complex occurs, comprise the decomposition of larger molecular organics, aminating reaction, addicted to the anti-nitration reaction releasing phosphorus and generating unit component of phosphorus bacterium and Anammox reaction, the concerted reaction of formation.
The sewage in anaerobic reaction district enters aerobic reactor zone by hydraulic pressure by the vertical water inlet pipe risen.
Aerobic reactor zone arranges blodisc, blodisc rotating speed 3 revs/min, and card 40% is soaked in water, and 60% exposes in atmosphere.When dish axle rotates, card alternately contacts with useless water and air.The membranoid substance that card is formed for attached microbial growth covered, and adhere to liquid film, aerobe film, double oxygen microbial film, anaerob film from outside to inside, microbial film total thickness reaches 1.0mm.The HRT of aerobic reactor zone is 8 hours.After anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and can realize more high efficiency pollutant removal effect.
Start up system internal recycle, aerobic reactor zone effluent recycling is to anaerobic reaction district, and controlling under internal recycle amount regular situation is 100%, and extends 3 hours reaction times to promote treatment effect.Both intensified denitrification and dephosphorization efficiency, and the complicacy increasing reactor assembly microbe species, when tackling different influent quality situation, the anti-fluctuation ability of system, namely stability is ensured.
After biochemical treatment, sewage enters the High-rate sedimentation district of anaerobism-catalytic oxidation biofilm reactor, in settling region, water inlet segment arranges coagulant dosage, add medicament and select novel coagulant aluminium iron polychloride, dosage is 6mg/L, hybrid reaction in line mixer, enters efficient sedimentation tank from settling region water distributor water distribution.Swash plate filled by settling tank, after mixed solution carries out mud-water separation, and supernatant liquor qualified discharge.
After treatment, effluent quality is sewage: pH:7.1, COD
cr: 36mg/L, BOD
5: 10mg/L, SS:8mg/L, NH
4 +-N:4mg/L, TP:0.46mg/L.Meet " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) one-level emission standard A.
Claims (11)
1. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage, it is characterized in that, it comprises following treatment step:
1) the small towns sewage collected is carried out the water yield in high level storage pond to regulate and store and preliminary precipitation;
2) by step 1) sewage after process enters anaerobic reaction district by flow by gravity, and anaerobic reaction district is provided with anaerobe filler for anaerobion apposition growth;
3) by step 2) sewage after process upwards flows into aerobic reactor zone by hydraulic pressure, aerobic reactor zone is provided with blodisc, after anaerobic treatment, enter aerobic reactor zone sewage and biofilm contact react, and realize more high efficiency pollutant removal effect;
4) through step 3) biochemical treatment after, sewage is introduced High-rate sedimentation district, the entrance in High-rate sedimentation district is provided with coagulant dosage mouth, hybrid reaction is carried out by dosing coagulant, mixed solution is after mud-water separation process, and supernatant liquor qualified discharge, excess sludge is extracted out.
2. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 1, it is characterized in that, step 1) high level storage pond and step 2) anaerobic reaction district between have the differential water pressures of 1 ~ 3m.
3. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 2, it is characterized in that, the storage capacity in described high level storage pond is 6h flooding quantity.
4. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 1, it is characterized in that, step 2) anaerobic reaction district in anaerobe media-filling rate be 50 ~ 80%, HRT be 4 ~ 6 hours.
5. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 4, it is characterized in that, described anaerobic reaction district dissolved oxygen concentration controls 6.5 ~ 7.2 at below 0.5mg/L, pH.
6. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 1, it is characterized in that, described step 3) blodisc rotating speed in aerobic reactor zone is 1.5 ~ 3 revs/min, the perimeter line speed of blodisc is set to 15 ms/min, and the HRT of aerobic reactor zone is 8 ~ 10 hours.
7. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 6, it is characterized in that, the dish axle of described blodisc exceeds the water surface, and card has 40% to soak in water, 60% exposes in atmosphere, and microbial film total thickness reaches 0.5 ~ 1.0mm.
8. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 7, it is characterized in that, circulation loop passage is provided with between described aerobic reactor zone and anaerobic reaction district, make the sewage backflow of aerobic reactor in anaerobic reaction district, the sewage of backflow is by anaerobe filler cutting dispersion, in anaerobic reaction district, form turbulent flow on a large scale, form concerted reaction.
9. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 8, it is characterized in that, the internal circulating load of described circulation loop passage controls between 50 ~ 200%.
10. utilize the method for anaerobism-catalytic oxidation biofilm reactor process sanitary sewage according to claim 1, it is characterized in that, step 4) in, the coagulating agent added is aluminium iron polychloride, and dosage is 5 ~ 10mg/L.
11. implement the claims anaerobism-catalytic oxidation biofilm reactor that method described in 1 adopts, it is characterized in that, it comprise connect successively anaerobic reaction district (2), aerobic reactor zone (6) and High-rate sedimentation district (13), anaerobic reaction district (2) is positioned at the below of reactor, and be provided with water-in (1), be inside provided with anaerobe filler; Aerobic reactor zone (6) is connected with aerobic reactor zone (6) and is positioned at the top of anaerobic reaction district (2), is provided with blodisc in it; The outlet of aerobic reactor zone (6) is connected with High-rate sedimentation district (13), the entrance in High-rate sedimentation district (13) is provided with coagulant dosage mouth (10), the top in High-rate sedimentation district (13) is provided with water outlet (14), and bottom is provided with excess sludge discharge mouth (15).
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