CN104310653B - A kind of method that copolymerizing and air-float method is disposed of sewage - Google Patents
A kind of method that copolymerizing and air-float method is disposed of sewage Download PDFInfo
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- CN104310653B CN104310653B CN201410607491.6A CN201410607491A CN104310653B CN 104310653 B CN104310653 B CN 104310653B CN 201410607491 A CN201410607491 A CN 201410607491A CN 104310653 B CN104310653 B CN 104310653B
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- 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
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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- 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
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- 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
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Physical Water Treatments (AREA)
Abstract
The present invention relates to a kind of sewage water treatment method, a kind of method that particularly copolymerizing and air-float method that integrates clarification and air supporting function is disposed of sewage, adopts following steps: (1) former water enters one-level flocculation zone and flocculates; (2) enter secondary flocculation zone, contact cohesion, carry out copolymerizing and air-float; (3) enter contact zone of dissolved air flotation, flocs with gas contacts cohesion with the dissolved air water that release discharges again again, and flocs with gas fully contacts with microbubble, forms copolymerization bulla flco; (4) enter solid-liquid displacement zone. Of the present invention producing effect: traditional accelerator and air-float technology are organically combined, comprise that the operations such as mixing, one-level flocculation, secondary flocculation, air supporting, precipitation and sludge reflux contact flocculation organically combine, dissolved air water microbubble participate in cohesion directly and and wadding grain copolymerization large, bubble is clipped in the middle of wadding grain, both given full play to the cohesion of bubble, securely bubble adhesion is being wadded a quilt with cotton on grain again, formation " copolymerizing and air-float ".
Description
Technical field
The present invention relates to a kind of sewage water treatment method, a kind of method that particularly copolymerizing and air-float method that integrates clarification and air supporting function is disposed of sewage.
Background technology
Reservoir water source pollution problem at present becomes increasingly conspicuous, and wherein algae pollution is particularly serious. Reservoir water easily presents many algaes in summer, the low turbid characteristic of winter low temperature at present. Along with water source Eutrophic Extent aggravates year by year, algae reproduction is increasingly serious, and especially, at the larger spring and autumn of variations in temperature, alga eruption phenomenon happens occasionally, and the operation to water factory and water supply security cause certain threat. The density of algae is little, traditional coagulation, precipitation, filtering technique are difficult to it effectively to remove, bring the series of problems such as filter tank is stopped up, backwashing period shortens, processing cost increases, effluent quality variation, some algae also can produce algae toxin under certain environment, and water supply security is threatened.
Depositing reservoir is incorporated into two process units of flocculation and precipitation in structures and completes, and relies on activated sludge slime layer to reach clarification object, has good turbidity removal effect. But for high algae, high organic matter and low temperature and low turbidity water, treatment effect is undesirable.
Tradition air-float technology as one efficiently, solid-liquid separation technique is promoted in water treatment field fast, is widely used in the purified treatment of low temperature, low turbid and algae body at present. But the mode that traditional air flotation technology adopts dissolved air water once to reflux; it is the former water dissolved air water that refluxes after abundant coagulation; microbubble does not participate in particle coagulation process; microbubble adheres to de-steady particle collision, and microbubble contacts hysteresis, time of contact with particle collision short, and the secondary that is equivalent to microbubble and flco flocculates; flocculation process is longer; and in Water treatment, can not give full play to the copolymerisation of microbubble and flco, the adhesive efficiency of microbubble and flco is not high, and microbubble effective rate of utilization is low.
Summary of the invention
The method that copolymerizing and air-float method of the present invention is disposed of sewage, present the high organic matter of high algae in summer, the low turbid water body characteristic of winter low temperature for current reservoir water, traditional accelerator and air-float technology are organically combined, air supporting and precipitation are worked in coordination with to Separation of Solid and Liquid, remove better the algae that density is less.
The present invention realizes by following measures:
The method that copolymerizing and air-float method of the present invention is disposed of sewage, is characterized in that adopting following steps:
(1) after former water dosing, enter water distributing area, enter afterwards one-level flocculation zone, under the rotation of mechanical agitation oar, flocculate together with the mud of returning;
(2) after one-level flocculation, enter secondary flocculation zone by promoting impeller lifting, the dissolved air water discharging with release in secondary flocculation zone contacts cohesion, carries out copolymerizing and air-float, after the less bubble flocs float of density, form scum silica frost, air supporting scum silica frost enters scum silica frost groove through scraping slag equipment;
(3) water after secondary flocculation zone enters contact zone of dissolved air flotation again, and flocs with gas contacts cohesion with the dissolved air water that release discharges again, and flocs with gas fully contacts with microbubble, forms copolymerization bulla flco;
(4) water behind contact zone of dissolved air flotation enters solid-liquid displacement zone, after the less bubble flocs float of density, forms scum silica frost, and air supporting scum silica frost enters scum silica frost groove through scraping slag equipment; At the bottom of heavier particle sinks to pond, enter one-level flocculation zone and carry out contact flocculation.
The method that the copolymerizing and air-float method of the invention described above is disposed of sewage, in order to improve copolymerizing and air-float effect, the water velocity of contact zone of dissolved air flotation is 10 ~ 20mm/s, and sewage is 10-20min in the time of staying of one-level flocculation zone, and wherein the secondary flocculation zone time of staying is about 5-10min.
The method that the copolymerizing and air-float method of the invention described above is disposed of sewage, in order to improve copolymerizing and air-float effect, the total addition of dissolved air water accounts for the 10%-20% of sewage total inflow, wherein, the addition of secondary flocculation zone dissolved air water accounts for 1/3 of dissolved air water total amount, and the addition of contact zone of dissolved air flotation dissolved air water accounts for 2/3 of dissolved air water total amount.
The method that the copolymerizing and air-float method of the invention described above is disposed of sewage, in order to improve copolymerizing and air-float effect, the water after secondary flocculation zone enters contact zone of dissolved air flotation from bottom; Water behind contact zone of dissolved air flotation enters solid-liquid displacement zone from top.
The method that the copolymerizing and air-float method of the invention described above is disposed of sewage, the straight 20-50mm of microbubble in dissolved air water, after copolymerizing and air-float, the diameter of gas enclosure wadding grain is 100-300mm.
Present the high organic matter of high algae in summer for current reservoir water, the low turbid water quality characteristic of winter low temperature, the poor problem of traditional accelerator treatment effect more. This technique is invented a kind of new-type air-floatation depositing reservoir, traditional accelerator and air-float technology are organically combined, comprise that the operations such as mixing, one-level flocculation, secondary flocculation, air supporting, precipitation and sludge reflux contact flocculation organically combine, and integrated, tackle high algae, the low Reservoir Water Quality such as turbid has outstanding advantage.
Technique of the present invention once adds dissolved air water in traditional air-float technology, changes twice into and adds, and first in the time of flocculation reaction, adds part dissolved air water, after reaction finishes, adds remainder dissolved air water again. Can, in the time that the micro-wadding grain of the stage of reaction has just formed, increase collision probability and accelerate cohesion speed because microbubble adds like this, air supporting organically combines with flocculation, enhanced flocculation process and effect, and this is one of this process innovation. More significant advantage is, bubble participate in cohesion directly and and wadding grain copolymerization large, bubble is clipped in the middle of wadding grain, both given full play to the cohesion of bubble, securely bubble adhesion is being wadded a quilt with cotton on grain again, thereby making flocs with gas not only stable in floating-upward process, and also do not sinking easily after becoming scum silica frost, the air supporting that this copolymerisation is good, is called " copolymerizing and air-float ". Copolymerizing and air-float and conventional air-float technology have remarkable difference, and conventional air supporting is only perfect reaction, wadding grain to have been tied to large, bubble mainly to stick to around wadding grain. The good stability of the gas enclosure wadding grain forming due to copolymerizing and air-float, the advantage such as wind-engaging rain shadow rings little, and the required hybrid reaction time is short, has a wide range of applications future.
The GT value that in copolymerizing and air-float technique, palpus attentional selection is suitable and the ratio of twice dissolved air water dosage, should avoid causing bubble self collision flocs with gas large and that the stage of reaction produces in reaction tank, to float up to the situation of the water surface. For creating copolymerization conditions, after former water dosing, take Quick mechanical to stir, make the equivalent diameter of the micro-wadding grain forming be substantially equal to microbubble diameter 20-50mm. Under such condition, after copolymerization, gas enclosure wadding grain is more than 100mm.
Tradition flotation waste water treatment mechanism is that former water collide with the microbubble passing into adhesions through coagulation pretreatment after, coagulation mechanism be with its hydrolyzation morphology and water body particle carry out that electrically neutralization is de-surely, adsorption bridging or adhesion roll up sweep and generate thick flco again air supporting separated removal. To be mainly bubble adhere to the collision of wadding grain flotation waste water treatment mechanism, the net of wadding grain is caught, winding and bridging action. Copolymerizing and air-float is different from traditional flotation waste water treatment technique, key is that dissolved air water classification refluxes, elementary flocculation time is short, and microbubble is participated in flco coagulation process directly, microbubble and wadding grain copolymerization large, the flco bubble that copolymerisation produces is clipped in the middle of wadding grain, as shown in Figure 1, both gave full play to the cohesion of bubble, securely bubble adhesion had been wadded a quilt with cotton on grain again, thereby make flocs with gas stable in floating-upward process, the scum silica frost of formation is also difficult for sinking. In this technique, in one-level flocculation process, main coagulation mechanism be the de-steady mechanism of electrically neutralization, and its adsorption bridging and net catch roll up sweep mechanism of action relatively a little less than. In secondary flocculation process, due to passing into for the first time of dissolved air water, it is collision adhesion and the copolymerization adhesive attraction of microbubble and flco that microbubble and particle adhere to dominant mechanism, in contact zone of dissolved air flotation air supporting bubble wadding adhesion process, Water clarifying mechanism be mainly microbubble and the collision of bubble flco adhere to steep that net between flco-microbubble-particle is caught, winding and bridging action.
Beneficial effect of the present invention
(1) this technique is invented a kind of new-type air-floatation depositing reservoir, traditional accelerator and air-float technology are organically combined, comprise that the operations such as mixing, one-level flocculation, secondary flocculation, air supporting, precipitation and sludge reflux contact flocculation organically combine, and integrated, tackle high algae, the low Reservoir Water Quality such as turbid has outstanding advantage.
(2) microbubble adds secondary flocculation zone, participates in flocculation process, increases wadding grain collision probability and accelerates cohesion speed, and air supporting organically combines with flocculation, enhanced flocculation process and effect. Dissolved air water participates in flocculation process and has saved added amount of chemical.
(3) dissolved air water microbubble is participated in cohesion directly and also large with the copolymerization of wadding grain, and bubble is clipped in the middle of the grain of wadding a quilt with cotton, and has both given full play to the cohesion of bubble, securely bubble adhesion is being wadded a quilt with cotton on grain again, and formation " copolymerizing and air-float ".
(4) the air floating settling pond method of operation is flexible. When former algae class concentration is high, open air-float technology, former algae class concentration can stop air supporting when low, move traditional mechanical clarification process, therefore can effectively reduce operating cost, and, because air flotation cell starts fast, permission intermittent duty, so than the switching that is easier to realize two methods of operation.
(5) air supporting and precipitation are worked in coordination with Separation of Solid and Liquid effect. Algae, particle that density is less are removed by air supporting, and particle, wadding grain that density is larger are removed by precipitation, and both complete collaborative Separation of Solid and Liquid in quiet environment.
Brief description of the drawings
Fig. 1 is sewage disposal schematic flow sheet of the present invention
Fig. 2 is air floating settling pond structural representation of the present invention
Fig. 3 is the microscopic examination figure of copolymerization bubble flco of the present invention, wherein: A. copolymerization bulla flco; B. steep flco microscopic pattern.
In figure, 1. water inlet pipe; 2. water inlet water distributing area; 3. one-level flocculation zone; 4. paddle; 5. promote impeller; 6. agitator; 7. secondary flocculation zone; 8. contact zone of dissolved air flotation; 9. solid-liquid displacement zone; 10. outlet canal; 11. scum silica frost grooves; 12. scrape slag equipment; 13. outlet pipes; 14. blow-down pipes; 15. discharge pipelines; 16. molten gas recirculation waters; 17. releases.
Detailed description of the invention
One: air float pool structure
As depicted in figs. 1 and 2, air floating settling pond comprises the compositions such as one-level flocculation zone 3, secondary flocculation zone 7, contact zone of dissolved air flotation 8, solid-liquid displacement zone 9 and clear water catchment 10 and sludge reflux district to air floating settling pond of the present invention.
Concrete structure is: air floating settling pond overall structure top is cylindrical, and it is conical that bottom is.
One-level flocculation zone 3 is positioned at the bottom of air floating settling pond, tapered, is provided with agitator 6 and paddle 4 and water inlet pipe 1 and water inlet water distributing area 2.
Above one-level flocculation zone, be from inside to outside distributed with successively secondary flocculation zone 7, contact zone of dissolved air flotation 8, solid-liquid displacement zone 9, be concentric structure. The bottom of secondary flocculation zone and contact zone of dissolved air flotation 8 is equipped with release 17, and release is connected with molten gas recirculation water 16. Between secondary flocculation zone and one-level flocculation zone, be connected by promoting impeller 5, the bottom of secondary flocculation zone 7 and contact zone of dissolved air flotation 8 is equipped with the release 17 that discharges dissolved air water, the top of secondary flocculation zone, contact zone of dissolved air flotation and solid-liquid displacement zone is equipped with scrapes slag equipment 12 and scum silica frost groove 11, and the top of solid-liquid displacement zone connects outlet canal 10, bottom is connected with one-level flocculation zone.
In secondary flocculation zone, the about 2-3m of each release service area2, in contact zone of dissolved air flotation, the about 1-2m of each release service area2。
Two: summer processing method is as follows：
Pending water is reservoir water, and in high algae season in summer, it is 5.0 × 10 containing algae amount7Individual/L, turbidity is 5-20NTU.
Reservoir water adds PAFC (PAFC), and dosage is that 4mg/L(is with Al3+Meter), enter water distributing area, enter afterwards one-level flocculation zone, under the rotation of mechanical agitation oar, flocculate together with the mud of returning.
After one-level flocculation, enter secondary flocculation zone by promoting impeller lifting, the dissolved air water discharging with release in secondary flocculation zone contacts cohesion, carries out copolymerizing and air-float, after the less bubble flocs float of density, form scum silica frost, air supporting scum silica frost enters scum silica frost groove through scraping slag equipment. The 5%(that the addition of secondary flocculation zone dissolved air water accounts for sewage total inflow account for dissolved air water total amount 1/3).
Water after secondary flocculation zone enters contact zone of dissolved air flotation again, and flocs with gas contacts cohesion with the dissolved air water that release discharges again, and flocs with gas fully contacts with microbubble, forms copolymerization bulla flco; In contact zone of dissolved air flotation, the 10%(that the addition of contact zone of dissolved air flotation dissolved air water accounts for sewage total inflow account for dissolved air water total amount 2/3).
Water behind contact zone of dissolved air flotation enters solid-liquid displacement zone, after the less bubble flocs float of density, forms scum silica frost, and air supporting scum silica frost enters scum silica frost groove through scraping slag equipment; At the bottom of heavier particle sinks to pond, enter one-level flocculation zone and carry out contact flocculation.
Wherein, one-level flocculation zone 3 and secondary flocculation zone 7 total residence times are about 20min-30min, wherein the secondary flocculation zone time of staying is about 5-10min, the cumulative volume of one-level flocculation zone is about 10min-20min, the current control rate of contact zone of dissolved air flotation is 10 ~ 20mm/s, time of staying 2-5min, the current control rate of solid-liquid displacement zone is 1.5 ~ 2.5mm/s, surface loading 5.0-9.0m3/m2.h。
Microbubble diameter 20-50mm in dissolved air water, after copolymerizing and air-float, the diameter of gas enclosure wadding grain is 100-300mm. As shown in Figure 3.
Through above-mentioned water after treatment, be 3.0 × 10 containing algae amount altogether5Individual/L, turbidity is 0.70NTU.
Three, winter processing method
Above-mentioned reservoir water, the water quality characteristic of low-temperature and low turbidity in the winter time, it is 7.0 × 10 containing algae amount5Individual/L, turbidity is 2-5NTU.
Adopt the said equipment, in processing method, stop adding of dissolved air water, flocculate, clarify. Its water outlet is containing algae amount 4.5 × 105Individual/L, turbidity is 0.85NTU.
Claims (3)
1. the method that copolymerizing and air-float method is disposed of sewage, is characterized in that adopting following steps:
(1) after former water dosing, enter water distributing area, enter afterwards one-level flocculation zone, under the rotation of mechanical agitation oar, flocculate together with the mud of returning;
(2) after one-level flocculation, enter secondary flocculation zone by promoting impeller lifting, the dissolved air water discharging with release in secondary flocculation zone contacts cohesion, carries out copolymerizing and air-float, after the less bubble flocs float of density, form scum silica frost, air supporting scum silica frost enters scum silica frost groove through scraping slag equipment;
(3) water after secondary flocculation zone enters contact zone of dissolved air flotation again, and flocs with gas contacts cohesion with the dissolved air water that release discharges again, and flocs with gas fully contacts with microbubble, forms copolymerization bulla flco;
(4) water behind contact zone of dissolved air flotation enters solid-liquid displacement zone, after the less bubble flocs float of density, forms scum silica frost, and air supporting scum silica frost enters scum silica frost groove through scraping slag equipment; At the bottom of heavier particle sinks to pond, enter one-level flocculation zone and carry out contact flocculation;
Wherein, the water velocity of contact zone of dissolved air flotation is 10 ~ 20mm/s, and sewage is 10-20min in the time of staying of one-level flocculation zone, and wherein the secondary flocculation zone time of staying is 5-10min;
The total addition of dissolved air water accounts for the 10%-20% of sewage total inflow, and wherein, the addition of secondary flocculation zone dissolved air water accounts for 1/3 of dissolved air water total amount, and the addition of contact zone of dissolved air flotation dissolved air water accounts for 2/3 of dissolved air water total amount;
Microbubble diameter 20-50mm in dissolved air water, after copolymerizing and air-float, the diameter of gas enclosure wadding grain is 100-300mm.
2. the method that copolymerizing and air-float method according to claim 1 is disposed of sewage, is characterized in that: in secondary flocculation zone, and each release service area 2-3m2, in contact zone of dissolved air flotation, each release service area 1-2m2.
3. the method that copolymerizing and air-float method according to claim 1 is disposed of sewage, is characterized in that: the water after secondary flocculation zone enters contact zone of dissolved air flotation from bottom; Water behind contact zone of dissolved air flotation enters solid-liquid displacement zone from top.
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| CN201410607491.6A CN104310653B (en) | 2014-11-03 | 2014-11-03 | A kind of method that copolymerizing and air-float method is disposed of sewage |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105502549B (en) * | 2016-01-21 | 2017-12-15 | 山东建筑大学 | One kind copolymerization floating depositing pool and process for purifying water |
| CN107055954B (en) * | 2017-03-30 | 2020-10-09 | 山东建筑大学 | Biochar circulation type copolymerization air flotation tank water purification system and method |
| CN107512799B (en) * | 2017-09-11 | 2021-07-27 | 天津大学 | Method for modifying clay by chitosan and application of algae removal technology thereof |
| CN113321260B (en) * | 2021-03-31 | 2022-10-25 | 华北理工大学 | Vertical flow type double-flow Cheng Qifu separation device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156648A (en) * | 1978-05-30 | 1979-05-29 | The United States Of America As Represented By The Secretary Of The Navy | Flotation device with pretreatment |
| CN202729923U (en) * | 2012-07-30 | 2013-02-13 | 华油惠博普科技股份有限公司 | Backflow type high-efficiency air-dissolved air flotation device |
| CN103922506A (en) * | 2014-04-14 | 2014-07-16 | 江苏新纪元环保有限公司 | Integrated complete equipment for water quality purification treatment |
| CN103964529A (en) * | 2014-03-21 | 2014-08-06 | 山东建筑大学 | Mixed-flowair-flotationwater purification method |
-
2014
- 2014-11-03 CN CN201410607491.6A patent/CN104310653B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4156648A (en) * | 1978-05-30 | 1979-05-29 | The United States Of America As Represented By The Secretary Of The Navy | Flotation device with pretreatment |
| CN202729923U (en) * | 2012-07-30 | 2013-02-13 | 华油惠博普科技股份有限公司 | Backflow type high-efficiency air-dissolved air flotation device |
| CN103964529A (en) * | 2014-03-21 | 2014-08-06 | 山东建筑大学 | Mixed-flowair-flotationwater purification method |
| CN103922506A (en) * | 2014-04-14 | 2014-07-16 | 江苏新纪元环保有限公司 | Integrated complete equipment for water quality purification treatment |
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