CN109179861A - A kind of pulling flow type coupling sewage-treatment plant and technique - Google Patents
A kind of pulling flow type coupling sewage-treatment plant and technique Download PDFInfo
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- CN109179861A CN109179861A CN201810999406.3A CN201810999406A CN109179861A CN 109179861 A CN109179861 A CN 109179861A CN 201810999406 A CN201810999406 A CN 201810999406A CN 109179861 A CN109179861 A CN 109179861A
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- metazoa
- sludge
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- 239000010865 sewage Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 42
- 230000008878 coupling Effects 0.000 title abstract description 13
- 238000010168 coupling process Methods 0.000 title abstract description 13
- 238000005859 coupling reaction Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000010802 sludge Substances 0.000 claims abstract description 68
- 239000000945 filler Substances 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 241001465754 Metazoa Species 0.000 claims abstract description 49
- 238000010992 reflux Methods 0.000 claims abstract description 40
- 238000006073 displacement reaction Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 29
- 238000005273 aeration Methods 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 19
- 239000000126 substance Substances 0.000 claims abstract description 16
- 238000005276 aerator Methods 0.000 claims abstract description 13
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000011259 mixed solution Substances 0.000 claims description 29
- 230000005484 gravity Effects 0.000 claims description 18
- 238000003756 stirring Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 9
- 244000005700 microbiome Species 0.000 claims description 9
- 230000001376 precipitating effect Effects 0.000 claims description 7
- 238000009395 breeding Methods 0.000 claims description 6
- 230000001488 breeding effect Effects 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000014759 maintenance of location Effects 0.000 claims 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims 1
- 239000000460 chlorine Substances 0.000 claims 1
- 229910052801 chlorine Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000002156 mixing Methods 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 238000000926 separation method Methods 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 7
- 238000004065 wastewater treatment Methods 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000009466 transformation Effects 0.000 description 6
- 238000011068 loading method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000036119 Frailty Diseases 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 206010003549 asthenia Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000002195 synergetic effect Effects 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a kind of pulling flow type coupling sewage-treatment plant and techniques, the sewage-treatment plant includes reaction unit, water feed apparatus, mixed liquor reflux unit, sludge refluxing apparatus, chemicals dosing plant, aeration control device and spoil disposal control device, reaction unit includes anaerobic zone, anoxic zone, aerobic zone and solid-liquid displacement zone, water feed apparatus is connect with anaerobic zone, chemicals dosing plant is connect with aerobic zone, mixed liquor reflux unit connects aerobic zone and anoxic zone, and sludge refluxing apparatus connects solid-liquid displacement zone and anaerobic zone；It is provided with agitating device in anaerobic zone, agitating device and fixed type biological membrane carrier filler are provided in anoxic zone, aerator and fixed metazoa carrier filler are provided in aerobic zone, solid-liquid displacement zone bottom is provided with mud discharging device.The sewage treatment process implemented using the device can reduce 30% or more the sludge yield of sewage generation；This technique is a kind of second level advanced treatment process, and advanced nitrogen can be realized without increasing tertiary treatment process.
Description
Technical field
The present invention relates to sanitary sewage disposal technical field, in particular to a kind of pulling flow type coupling sewage-treatment plant and work
Skill.
Background technique
China most cities sewage treatment plant uses plug-flow type active sludge method and its deformation technique, such as A2/ O technique,
A/O technique, inversion A2/ O technique etc..There are the following problems in actual moving process for above-mentioned sewage treatment process:
1) excess sludge production is big, processing disposition is difficult: the Activated Sludge Process that urban wastewater treatment firm generallys use
Have the shortcomings that excess sludge yield is big.Contain a large amount of persistent organic pollutants, heavy metal in excess sludge and causes a disease micro-
The harmful substances such as biology, processing disposition difficulty is big, at high cost, and processing disposal costs account for about the 25%- of sewage treatment total cost
60%.
Burning, agricultural use and landfill stabilization after the processing method of disposal of excess sludge is predominantly dehydrated at present.Wherein, dirty
Mud burning expense is excessively high, the safety of impact of heavy metals agricultural use, thus most excess sludges use landfill stabilization.It fills out
Burying disposition, there is the contaminated lands such as heavy metal, toxic organic compound and underground water, generation toxic and harmful gas, a large amount of soils of occupancy
Etc. insoluble problem, it has also become puzzlement urban development, the huge difficult problem for influencing living environment.
2) it is difficult to adapt to the discharge standard being continuously improved: currently, national departments concerned is studying revision " at town sewage
Manage factory's pollutant emission standard " (GB18918-2002), exposure draft has been issued, " special emission limit " is increased, it is desirable that
Territorial development density is high, environmental bearing capacity is weak, environmental carrying capacity is small, ecological environment frailty or is easy to happen Heavy environmental pollution
The area of problem executes special emission limit, for the regional requirements sewage disposal plant effluent of water eutrophication outstanding problem
TN value≤10mg/L.Activated Sludge Process that urban wastewater treatment firm generallys use water outlet total nitrogen usually 15~20mg/L it
Between, it is unable to satisfy the requirement that water outlet total nitrogen is less than 10mg/L.Increase tertiary treatment process (such as anti-digestion filter tank additional carbon), both
Increase occupied area, and increase investment and operating cost, it is difficult to implement.Especially the sewage treatment plant of built operation is carried out
Mention mark transformation, by can not increase newly land used, prior art can not stop production transformation etc. factors influenced, it is more difficult to implement.
Therefore, need to develop that a kind of denitrification effect is good, excess sludge production is small, the municipal sewage easy to implement for proposing mark transformation
Processing equipment and treatment process.
Summary of the invention
The purpose of the present invention is to provide a kind of pulling flow type coupling sewage-treatment plant and techniques, to solve above-mentioned background skill
The problem of being proposed in art.
Used technical solution to solve above-mentioned technical problem: a kind of pulling flow type couples sewage-treatment plant, including anti-
Answer device, water feed apparatus, mixed liquor reflux unit, sludge refluxing apparatus, chemicals dosing plant, aeration control device and spoil disposal control dress
It sets, the reaction unit includes the anaerobic zone being successively disposed adjacent, anoxic zone, aerobic zone and solid-liquid displacement zone, the water inlet dress
It sets and is connect by pipeline with anaerobic zone, the chemicals dosing plant is connect by pipeline with aerobic zone end, the mixed liquor reflux dress
It sets and aerobic zone end and anoxic zone front end is connected by pipeline, the sludge refluxing apparatus connects solid-liquid displacement zone bottom by pipeline
Portion and anaerobic zone front end；It is provided with agitating device in the anaerobic zone, agitating device and fixed is provided in the anoxic zone
Biofilm carrier filler is provided with aerator and fixed metazoa carrier filler, the solid-liquid point in the aerobic zone
Area bottom is provided with mud discharging device；The fixed type biological membrane carrier filler and fixed metazoa carrier filler are fixed
Region in reaction unit below liquid level, more than agitating device or aerator.
Further, the fixed type biological membrane carrier filler and fixed metazoa carrier filler are in reaction unit
Packing ratio be 20%~70%.
Further, the aerator is formed by air blower, multiple aeration plates and with casing valve.
A kind of sewage treatment process using pulling flow type coupling sewage-treatment plant, comprising the following steps:
1) after sewage being removed rubbish and silt by grid, setting pot, water feed apparatus is recycled to pass through pipeline for sewage
Anaerobic zone is delivered in such a way that lower end is flooded into water；
2) it is sufficiently mixed water inlet and returnedactivatedsludge in anaerobic zone using the stirring action of agitating device；
3) the muddy water mixed solution gravity flow in anaerobic zone, which enters, is provided in the anoxic zone of fixed type biological membrane carrier filler, and
It is mixed with the aerobic zone muddy water mixed solution that mixed liquor reflux unit is delivered in anoxic zone；
4) by the stirring action of agitating device, muddy water in anoxic zone is kept to be sufficiently mixed, and is carried with fixed type biological film
Biomembrane on body filler comes into full contact with；
5) the muddy water mixed solution gravity flow in anoxic zone enters the aerobic zone for being provided with fixed metazoa carrier filler；
6) air quantity that air blower is controlled by aeration control device carries out blast aeration to aerobic zone, makes mud in aerobic zone
Water mixed liquid is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler；It and is mud in aerobic zone
Metazoa on microorganism, fixed metazoa carrier filler in water mixed liquid etc. provides oxygen required for growth and breeding
Gas；
7) Dephosphorization reagent is added by chemicals dosing plant in aerobic zone rear end, muddy water mixed solution gravity flow divides into solid-liquid after dosing
From area；
8) anaerobic zone is delivered to by sludge refluxing apparatus by the sludge that solid-liquid displacement zone is precipitated；
9) step 1)~8 are repeated) operation, until the liquid level of precipitating sludge increases to apart from the water surface in solid-liquid displacement zone
Height reaches setting value, controls mud discharging device discharge part solid-liquid displacement zone bottom precipitation sludge to dirt by spoil disposal control device
Except water treatment facilities, processing disposition is carried out；
10) repeat step 1)~9) operation.
Further, anaerobic zone hydraulic detention time described in step 2) is 0.5~1h, and DO value is lower than 0.2mg/L.
Further, anoxic zone hydraulic detention time described in step 4) be 2~4h, DO value 0.2~0.5mg/L it
Between.
Further, aerobic zone hydraulic detention time described in step 6) is 2.5~3.5h, and DO value is in 1.5~3.5mg/L
Between.
Further, Dephosphorization reagent described in step 7) is aluminium polychloride, and the dosage of aluminium polychloride is 4~8mg/
L。
Further, the surface loading of solid-liquid displacement zone waterpower described in step 8) is 1~1.5m3/(m2·h)。
Further, the volume for the precipitating sludge being discharged in step 9) is the 20%~50% of solid-liquid displacement zone total volume.
Beneficial effects of the present invention:
1) sewage-treatment plant of the invention is suitable for aerator and fixed metazoa in aerobic zone dissolved oxygen concentration
Carrier arrangement matches in reasonable situation, can be enriched with and fix on the fixed metazoa carrier filler in aerobic zone and is a large amount of
It is living can largely to consume the excess generated in sewage disposal process for metazoa, the mud decrement mechanism based on microfauna prey
Property sludge, that is, excess sludge, so as to substantially reduce the discharge amount of process system excess sludge, can be relieved sewage treatment generation
Excess sludge processing dispose pressure, reduce excess sludge handle disposal costs.
2) sewage-treatment plant of the invention is suitable for agitating device and fixed life in anoxic zone dissolved oxygen value, reflux ratio
Object membrane carrier arrangement matches in reasonable situation, and the fixed type biological membrane carrier filler surface in anoxic zone can be enriched with and fix
A large amount of denitrifying bacterias, the growth of denitrifying bacteria comprehensive organism amount can be obviously improved the denitrifying capacity of system, without
Increasing tertiary treatment process can be realized advanced nitrogen, and effluent quality can be made to meet " urban wastewater treatment firm pollutant emission
Standard " (exposure draft) " special emission limit " requirement, water outlet ammonia nitrogen be less than 0.5mg/L, total nitrogen be less than 10mg/L.
3) sewage treatment process of the invention is a kind of second level advanced treatment process, at the sewage to built operation
Reason factory propose mark transformation, need to only be added respectively in anoxic zone, aerobic zone fixed type biological membrane carrier filler and it is fixed after
Transformation can be completed in lively object carrier filler, adjusting process parameter.Due to having without carrying out larger change to original process pond body
The advantages that project amount is small, the off-time is short, small investment, easy easy to implement and operation and maintenance can meet sewage treatment plant and be higher than
" level-one A " standard proposes mark transformation demand.
Detailed description of the invention
The present invention is described further with reference to the accompanying drawings and examples:
Fig. 1 is the structural schematic diagram that pulling flow type of the present invention couples sewage-treatment plant.
Description of drawing identification: the anaerobic zone 1-, the anaerobic zone 2- agitating device, the anoxic zone 3-, the anoxic zone 4- agitating device, 5- are solid
Fixed pattern biofilm carrier filler, the aerobic zone 6-, 7- aeration control device, the fixed metazoa carrier filler of 8-, 9- solid-liquid point
From area, 10- water feed apparatus, 11- mixed liquor reflux unit, 12- chemicals dosing plant, 13- sludge refluxing apparatus, 14- aerator,
15- spoil disposal control device, 16- mud discharging device.
Specific embodiment
Referring to Fig.1, a kind of pulling flow type couples sewage-treatment plant, including the reflux of reaction unit, water feed apparatus 10, mixed liquor
Device 11, sludge refluxing apparatus 13, chemicals dosing plant 12, aeration control device 7 and spoil disposal control device 15；Reaction unit include according to
The secondary anaerobic zone 1 being disposed adjacent, anoxic zone 3, aerobic zone 6 and solid-liquid displacement zone 9；The side of anaerobic zone 1 is successively set from top to bottom
It is equipped with water inlet and sludge reflux entrance, water feed apparatus 10 is connect by pipeline with the water inlet of anaerobic zone 1, and water feed apparatus 10 will
Sewage is passed through reaction unit from reaction unit bottom；The side of anoxic zone 3 is provided with mixed liquor reflux inlet, the side of aerobic zone 6
Face is provided with mixed liquor bypass outlet, and mixed liquor reflux unit 11 is returned by the mixed liquor that pipeline connects 6 end profile of aerobic zone
The mixed liquor reflux inlet of 3 front end side of outflux and anoxic zone；9 upper end of solid-liquid displacement zone is provided with supernatant outlet, bottom end
It is provided with mud discharging device 16, sludge refluxing apparatus 13 connects the mud discharging device 16 and anaerobism of 9 bottom of solid-liquid displacement zone by pipeline
The sludge reflux entrance of 1 front end of area, chemicals dosing plant 12 are connect by pipeline with 6 end of aerobic zone.Anaerobism is provided in anaerobic zone 1
Area's agitating device 2, anoxic zone agitating device 4 and apposition growth are provided in anoxic zone 3 has the fixed type biological film of biomembrane to carry
Body filler 5, being provided with aerator 14 and apposition growth in aerobic zone 6 has the fixed metazoa carrier filler of metazoa
8, the outside of aerobic zone 6 is arranged in control the blow rate required of aerator 14 in aeration control device 7, and spoil disposal control device 15 is arranged
The discharge of precipitating sludge in solid-liquid displacement zone 9 is controlled in the outside of solid-liquid displacement zone 9；5 He of fixed type biological membrane carrier filler
Fixed metazoa carrier filler 8 is each attached in reaction unit below liquid level, agitating device or 14 or more aerator
Region.This sewage-treatment plant adheres to bed without external metazoa, integrates and realizes in the device and is caught based on microfauna
The sludge reduction functions of food.
Preferably as one kind of the invention, fixed type biological membrane carrier filler 5 and fixed metazoa carrier filler 8 exist
Packing ratio in reaction unit is 20%~70%.
Preferably as one kind of the invention, mixed liquor reflux unit 11 and sludge refluxing apparatus 13 are by pipeline and pipeline pump
Composition.The reflux ratio of mixed liquor reflux unit is (2~4): 1, the reflux ratio of sludge refluxing apparatus is (1~2): 1.
Preferably as one kind of the invention, aerator 14 is formed by air blower, multiple aeration plates and with casing valve, aeration
Gas-water ratio when device 14 is aerated is (3~8): 1.
The principle of the present invention: growing a large amount of biomembranes on the fixed type biological membrane carrier filler 5 that anoxic zone 3 is added,
A large amount of microorganisms, microfauna are grown in biomembrane, while containing a large amount of activated sludge in sewage, are grown in activated sludge
A large amount of microorganisms, microfauna, and micro- life on fixed type biological membrane carrier filler 5 in biomembrane and in water in activated sludge
Object, the type of microfauna is different, distribution is different, passes through these microorganisms, the synergistic effect of microfauna, i.e. biomembrane and work
Property sludge coupling, intensified anti-nitrated effect may be implemented, achieve the purpose that advanced nitrogen, make be discharged ammonia nitrogen be less than
0.5mg/L, total nitrogen are less than 10mg/L.Meanwhile aerobic, grown on the fixed metazoa carrier fillers 8 of 6 additions a large amount of
Metazoa, metazoa can prey on activated sludge, so that excess sludge reduction be made to can achieve 30% or more, be discharged water
Matter reaches surface water class IV class standard, meets " urban wastewater treatment firm pollutant emission standard " (exposure draft) " especially row
Put limit value " requirement.
A kind of sewage treatment process using above-mentioned sewage-treatment plant, comprising the following steps:
1) after sewage being removed rubbish and silt by grid, setting pot, recycle water feed apparatus 10 will be dirty by pipeline
Water is delivered to anaerobic zone 1 in such a way that lower end is flooded into water；
2) mix water inlet and returnedactivatedsludge in anaerobic zone 1 sufficiently using the stirring action of anaerobic zone agitating device 2
It closes；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being provided with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted；
7) Dephosphorization reagent is added by chemicals dosing plant 12 in 6 rear end of aerobic zone, muddy water mixed solution gravity flow enters solid after dosing
Liquid Disengagement zone 9；
8) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13；
9) step 1)~8 are repeated) operation, until the liquid level of precipitating sludge increases to apart from the water surface in solid-liquid displacement zone 9
Height reach setting value, pass through spoil disposal control device 15 control 16 discharge part solid-liquid displacement zone of mud discharging device, 9 bottom precipitation
Except sludge to sewage-treatment plant, processing disposition is carried out；
10) repeat step 1)~9) operation.
Preferably as one kind of the invention, 1 hydraulic detention time of anaerobic zone is 0.5~1h in step 2), and DO value is lower than
0.2mg/L。
Preferably as one kind of the invention, 3 hydraulic detention time of anoxic zone is 2~4h in step 4), DO value 0.2~
Between 0.5mg/L.
Preferably as one kind of the invention, 6 hydraulic detention time of aerobic zone is 2.5~3.5h in step 6), and DO value is 1.5
Between~3.5mg/L.
Preferably as one kind of the invention, preferably as one kind of the invention, Dephosphorization reagent is polyaluminium in step 7)
Aluminium, the dosage of aluminium polychloride are 4~8mg/L.
Preferably as one kind of the invention, 9 waterpower surface loading of solid-liquid displacement zone is 1~1.5m in step 8)3/(m2·
h)。
Preferably as one kind of the invention, the volume for the precipitating sludge being discharged in step 9) is 9 total volume of solid-liquid displacement zone
20%~50%.
Embodiment 1:
Make a kind of pulling flow type coupling sewage-treatment plant of the invention (referring to Fig.1, treatment scale is about 120 ton/days).
Sewage treatment is carried out using the sewage-treatment plant, operating procedure is as follows:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of anaerobic zone agitating device 2, detest
1 hydraulic detention time of oxygen area is 1h, and DO value is 0.15mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters in the anoxic zone 3 for being equipped with fixed type biological membrane carrier filler 5,
And it is mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.3mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being provided with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2mg/L；
7) aluminium polychloride, dosage 4mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface 2m below the water surface in solid-liquid displacement zone 9 judges that process system does not need spoil disposal；
9) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13 and handles dirt again
Water, return sludge ratio 100%.
Sewage treatment result:
Influent quality is as shown in the table:
1 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
2 effluent quality of table (unit: mg/L)
From Tables 1 and 2: using a kind of pulling flow type coupling sewage-treatment plant of the invention to Guangzhou sewage at
The sewage of reason factory is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " and (solicit meaning
See original text) " special emission limit " requirement.
Embodiment 2:
Make a kind of pulling flow type coupling sewage-treatment plant of the invention (referring to Fig.1, treatment scale is about 120 ton/days).
The processing of sewage is carried out using the sewage-treatment plant, comprising the following steps:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of anaerobic zone agitating device 2, detest
1 hydraulic detention time of oxygen area is 1h, and DO value is 0.17mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters the anoxic zone 3 for being provided with fixed type biological membrane carrier filler 5
It is interior, and mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.4mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being added with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2.5mg/L；
7) aluminium polychloride, dosage 6mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface judges that process system needs spoil disposal apart from water surface 1m in solid-liquid displacement zone 9；
9) total 6m is discharged by mud discharging device 1639 bottom precipitation sludge of solid-liquid displacement zone, remaining sludge passes through sludge
Reflux unit 13 flows back into anaerobic zone 1 and handles sewage, return sludge ratio 100% again；
10) it is computed, the excess sludge dry weight of this discharge is 72kg；The measuring and calculating of combination processing water, process system remain
Remaining sludge yield is 3.45 tons (wet mud of moisture content 80%)/ten thousand tons of water, (is contained compared to about 5 tons of conventional activated sludge method technique
The wet mud of water rate 80%)/ten thousand tons of water excess sludge production, mud decrement about 30%.
Sewage treatment result:
Influent quality is as shown in the table:
3 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
4 effluent quality of table (unit: mg/L)
From table 3 and table 4: using a kind of pulling flow type coupling sewage-treatment plant of the invention to Guangzhou sewage at
The sewage of reason factory is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " and (solicit meaning
See original text) " special emission limit " requirement；Meanwhile can reduce about 30% excess sludge discharge amount.
Embodiment 3:
Make a kind of pulling flow type coupling sewage-treatment plant of the invention (referring to Fig.1, treatment scale is about 120 ton/days).
The processing of sanitary sewage is carried out using the sewage-treatment plant, comprising the following steps:
1) after the sewage of Guangzhou sewage treatment plant being removed rubbish and silt by grid, setting pot, recycle into
Sewage is delivered to the anaerobic zone 1 of reaction unit pipeline by water installations 10 in such a way that lower end is flooded into water；
2) keep water inlet in reaction unit anaerobic zone 1 and returnedactivatedsludge abundant using the stirring action of agitating device,
1 hydraulic detention time of anaerobic zone is 1h, and DO value is 0.16mg/L；
3) the muddy water mixed solution gravity flow in anaerobic zone 1 enters the anoxic zone 3 for being provided with fixed type biological membrane carrier filler 5
It is interior, and mixed with 6 muddy water mixed solution of aerobic zone that mixed liquor reflux unit 11 is delivered in anoxic zone 3；
4) by the stirring action of anoxic zone agitating device 4, muddy water in anoxic zone 3 is kept to be sufficiently mixed, and with it is fixed
Biomembrane on biofilm carrier filler 5 comes into full contact with, and 3 hydraulic detention time of anoxic zone is 3h, and DO value is 0.41mg/L；
5) the muddy water mixed solution gravity flow in anoxic zone 3 enters the aerobic zone for being added with fixed metazoa carrier filler 8
6；
6) air quantity that air blower is controlled by aeration control device 7 carries out blast aeration to aerobic zone 6, makes in aerobic zone 6
Muddy water mixed solution is sufficiently mixed, and is come into full contact with the metazoa on fixed metazoa carrier filler 8；It and is aerobic zone 6
Metazoa on microorganism, fixed metazoa carrier filler 8 in interior muddy water mixed solution etc. is provided needed for growth and breeding
The oxygen wanted, 6 hydraulic detention time of aerobic zone are 3h, and DO value is 2.3mg/L；
7) aluminium polychloride, dosage 5mg/L, muddy water after dosing are added by chemicals dosing plant 12 in 6 rear end of aerobic zone
It is 1m that mixed liquor gravity flow, which enters surface loading,3/(m2H) solid-liquid displacement zone 9；
8) through detecting, sludge interface 2m below the water surface in solid-liquid displacement zone 9 judges that process system does not need spoil disposal；
9) sludge precipitated by solid-liquid displacement zone 9 is delivered to anaerobic zone 1 by sludge refluxing apparatus 13 and handles dirt again
Water, return sludge ratio 100%.
Sewage treatment result:
Influent quality is as shown in the table:
5 influent quality of table (unit: mg/L)
Effluent quality is as shown in the table:
6 effluent quality of table (unit: mg/L)
From table 5 and table 6: using a kind of pulling flow type coupling sewage-treatment plant of the invention to Guangzhou sewage at
The sewage of reason factory is handled, and effluent quality index can achieve " urban wastewater treatment firm pollutant emission standard " and (solicit meaning
See original text) " special emission limit " requirement.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned embodiment party
Formula within the scope of knowledge possessed by those of ordinary skill in the art can also be before not departing from present inventive concept
Put that various changes can be made.
Claims (10)
1. a kind of pulling flow type couples sewage-treatment plant, including reaction unit, water feed apparatus, mixed liquor reflux unit, sludge return
Flow device, chemicals dosing plant, aeration control device and spoil disposal control device, it is characterised in that: the reaction unit includes successively phase
Anaerobic zone, anoxic zone, aerobic zone and the solid-liquid displacement zone of neighbour's setting, the water feed apparatus are connect by pipeline with anaerobic zone, institute
State chemicals dosing plant and connect with aerobic zone end by pipeline, the mixed liquor reflux unit by pipeline connection aerobic zone end with
Anoxic zone front end, the sludge refluxing apparatus connect solid-liquid displacement zone bottom and anaerobic zone front end by pipeline；The anaerobic zone
It is inside provided with agitating device, agitating device and fixed type biological membrane carrier filler, the aerobic zone are provided in the anoxic zone
It is inside provided with aerator and fixed metazoa carrier filler, the solid-liquid displacement zone bottom is provided with mud discharging device；Institute
It states fixed type biological membrane carrier filler and fixed metazoa carrier filler is each attached in reaction unit below liquid level, stirs
Region more than device or aerator.
2. pulling flow type according to claim 1 couples sewage-treatment plant, it is characterised in that: the fixed type biological film carries
The packing ratio of body filler and fixed metazoa carrier filler in reaction unit is 20%~70%.
3. pulling flow type according to claim 1 couples sewage-treatment plant, it is characterised in that: the aerator is by air blast
Machine, multiple aeration plates and with casing valve form.
4. a kind of sewage treatment process using device as described in claim 1, which comprises the following steps:
1) after sewage being removed rubbish and silt by grid, setting pot, recycle water feed apparatus will be below sewage by pipeline
The mode flooded into water is held to be delivered to anaerobic zone；
2) it is sufficiently mixed water inlet and returnedactivatedsludge in anaerobic zone using the stirring action of agitating device；
3) the muddy water mixed solution gravity flow in anaerobic zone, which enters, is provided in the anoxic zone of fixed type biological membrane carrier filler, and with it is mixed
It closes liquid reflux unit and is delivered to the mixing of the aerobic zone muddy water mixed solution in anoxic zone；
4) by the stirring action of agitating device, muddy water in anoxic zone is kept to be sufficiently mixed, and fill out with fixed type biological membrane carrier
Biomembrane on material comes into full contact with；
5) the muddy water mixed solution gravity flow in anoxic zone enters the aerobic zone for being provided with fixed metazoa carrier filler；
6) air quantity that air blower is controlled by aeration control device carries out blast aeration to aerobic zone, keeps muddy water in aerobic zone mixed
It closes liquid to be sufficiently mixed, be come into full contact with the metazoa on fixed metazoa carrier filler；And it is mixed for muddy water in aerobic zone
It closes the microorganism in liquid, metazoa on fixed metazoa carrier filler etc. and oxygen required for growth and breeding is provided；
7) Dephosphorization reagent is added by chemicals dosing plant in aerobic zone rear end, muddy water mixed solution gravity flow, which enters, after dosing is separated by solid-liquid separation
Area；
8) anaerobic zone is delivered to by sludge refluxing apparatus by the sludge that solid-liquid displacement zone is precipitated；
9) step 1)~8 are repeated) operation, until the liquid level of precipitating sludge increases to the height apart from the water surface in solid-liquid displacement zone
Reach setting value, is controlled at the bottom precipitation sludge to sewage of mud discharging device discharge part solid-liquid displacement zone by spoil disposal control device
It manages except device, carries out processing disposition；
10) repeat step 1)~9) operation.
5. sewage treatment process according to claim 4, it is characterised in that: when anaerobic zone hydraulic retention described in step 2)
Between be 0.5~1h, DO value be lower than 0.2mg/L.
6. sewage treatment process according to claim 4, it is characterised in that: when anoxic zone hydraulic retention described in step 4)
Between be 2~4h, DO value is between 0.2~0.5mg/L.
7. sewage treatment process according to claim 4, it is characterised in that: when aerobic zone hydraulic retention described in step 6)
Between be 2.5~3.5h, DO value is between 1.5~3.5mg/L.
8. sewage treatment process according to claim 4, it is characterised in that: Dephosphorization reagent described in step 7) is polymerization chlorine
Change aluminium, the dosage of aluminium polychloride is 4~8mg/L.
9. sewage treatment process according to claim 4, it is characterised in that: solid-liquid displacement zone hydraulic gauge described in step 8)
Face load is 1~1.5m3/(m2·h)。
10. sewage treatment process according to claim 4, it is characterised in that: the body for the precipitating sludge being discharged in step 9)
Product is the 20%~50% of solid-liquid displacement zone total volume.
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