CN103539318B - Air flotation biological filter tank integration apparatus and control method thereof - Google Patents
Air flotation biological filter tank integration apparatus and control method thereof Download PDFInfo
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- CN103539318B CN103539318B CN201310524088.2A CN201310524088A CN103539318B CN 103539318 B CN103539318 B CN 103539318B CN 201310524088 A CN201310524088 A CN 201310524088A CN 103539318 B CN103539318 B CN 103539318B
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Abstract
The present invention relates to water-treatment technology field, particularly a kind of Air flotation biological filter tank integration apparatus and control method thereof, this equipment comprises air flotation pool, described air flotation pool comprises inner core and to be located at outside inner core and to be highly greater than the urceolus of inner core, bottom described inner core or lower wall offer water-in and be connected with former water water inlet pipe, described inner core top is introduced dissolved air water water inlet pipe and is stretched in inner core, biologic packing material is provided with in annulus between described inner core and urceolus, to carry out biofiltration process to the water body after air-flotation process, bottom described urceolus or lower wall offer water outlet and be connected with extension tube attached, position higher than inner core top in described urceolus is provided with slag-drip opening, described slag-drip opening is connected to outside urceolus through scum pipe, to discharge scum silica frost.This integration apparatus and control method thereof not only water treatment efficiency are good, and level of automation is high, and structure is simple, easy handling.
Description
Technical field
The present invention relates to Water purification technical field, particularly a kind of Air flotation biological filter tank integration apparatus and control method thereof.
Background technology
Current air flotation technology is comparatively widely used in feedwater, the especially purifying treatment of low temperature, low turbid, algae body, and municipal effluent and Industrial Wastewater Treatment.In air-float water treating processes, particulate matter mainly removes one of object, and the colloid electrical potential energy in particle removal process and reactive force are by Effect of Electric Double Layer power, gravitation, repulsion and hydration power joint effect.In addition, interface is also subject to the impact of the factors such as hydrophobic effect, surface tension, tensio-active agent.
Air flotation technology application has its limitation, is in particular in that the former water being applicable to dissolved air flotation process requires that humus content is higher or cosmochrome is higher, eutrophication, algae content is higher, turbidity is lower or even the former water of low-temperature and low turbidity.Dissolved air flotation process and depositing technology have almost similar effect, but treatment effect is subject to raw water turbidity impact comparatively greatly, and the former water of turbidity >100NTU is not suitable for dissolved air flotation process.In addition, also there is complex process in air flotation technology, controling parameters is many, operation cost is high, power consumption is large, to shortcomings such as process management personnel requirement are higher.
Biofiltration originates in 20 century 70s, namely refers to cultivate microbial film at conventional rapid filter filter material surface, and make filter tank while the traditional rapid filter filtration capacity of maintenance, the Degradation by microorganism removes underwater micro-organic matter preferably.Research shows, using biological rapid filter as final stage process, can obtain low turbid and have the water outlet of biologically stable.
Biological filtering tank process has its limitation, mainly around the practical problems that biological growth characteristic causes, such as influence factor is more, operational administrative is difficult to the limitation such as the research of specification, the wholesomeness of random large, filter tank Aquatic organisms, effluent quality and process mechanism is insufficient, also has the effect of the such environmental effects biological filter process such as seasonal climate in addition.
Summary of the invention
The object of the present invention is to provide a kind of Air flotation biological filter tank integration apparatus and control method thereof, this integration apparatus and control method thereof not only water treatment efficiency are good, and level of automation is high, and structure is simple, easy handling.
To achieve these goals, technical scheme of the present invention is: a kind of Air flotation biological filter tank integration apparatus, comprise air flotation pool, described air flotation pool comprises inner core and to be located at outside inner core and to be highly greater than the urceolus of inner core, bottom described inner core or lower wall offer water-in and be connected with former water water inlet pipe, described inner core top is introduced dissolved air water water inlet pipe and is stretched in inner core, biologic packing material is provided with in annulus between described inner core and urceolus, to carry out biofiltration process to the water body after air-flotation process, bottom described urceolus or lower wall offer water outlet and be connected with extension tube attached, position higher than inner core top in described urceolus is provided with slag-drip opening, described slag-drip opening is connected to outside urceolus through scum pipe, to discharge scum silica frost.
Further, described extension tube attached divides two-way, and a road is rising pipe, and a road is back flushing water inlet pipe, and described rising pipe and back flushing water inlet pipe are respectively equipped with valve, to carry out switch selection and Flow-rate adjustment.
Further, also comprise elevated tank, the import of described elevated tank meets former supply mains, and the radiator drain of described elevated tank connects described former water water inlet pipe and back flushing water inlet pipe respectively, described former water water inlet pipe is provided with valve, to carry out switch selection and Flow-rate adjustment.
Further, also comprise the dissolving tank for dissolving coagulating agent, the drain pipe of described dissolving tank is through former water water inlet pipe described in a certain amount of liquid feeding equipment access.
Further, described inner core lower inside is provided with baffle plate.
Further, described urceolus top is also provided with dissolved air water water inlet pipe and stretches in the annulus between inner core and urceolus, and each dissolved air water water inlet pipe is equipped with valve.
Further, also comprise by dissolving, backflow water pump, air compressor machine, the air dissolving system that air intake control valve and liquid level sensor are formed, the water outlet access water purifying tank of described air flotation pool, the return line of drawing from described water purifying tank is connected to dissolving through backflow water pump, the inlet pipe of drawing from described air compressor machine is connected to dissolving through air intake control valve, described dissolving is provided with packing, described liquid level sensor is connected with described air intake control valve, to be driven the action of air intake control valve by the liquid level change in dissolving, described dissolving water outlet is connected with described dissolved air water water inlet pipe.
The present invention also provides the control method of above-mentioned Air flotation biological filter tank integration apparatus, and when in former water, ammonia nitrogen concentration is not more than 1.0mg/L, controlling reflux ratio is 15 ~ 20%, and hydraulic load is 4 ~ 5m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 6 ~ 8h, and described reflux ratio is the ratio of recirculation water flow and water flow in rising pipe in return line.When in former water, ammonia nitrogen concentration is greater than 2.0mg/L, controlling reflux ratio is 25 ~ 30%, and hydraulic load is 3 ~ 4m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 8 ~ 12h.When in former water, algae counts is greater than 10
6individual/L time, control reflux ratio be 25 ~ 30%, hydraulic load is 2 ~ 3m
3/ (m
2h), coagulating agent input amount is 25 ~ 30mg/L, and backwashing period is 24 ~ 36h.
Compared to prior art, the invention has the beneficial effects as follows: by the concentric tube structure design of Air flotation biological filter tank main body, inner circle current air water in the same way, forms the flotation separation district that air flotation technology is important, be suitable for the turbidity scope of Water purification and have unique effect for algae, clearance is high.Meanwhile, the suspension slime layer of cylindrical forms the action principle of similar settling pond, and have the ability strengthening biologic packing material scrubbing turbidity removal organic matter removal effect, scum layer thickness can reach 10cm.In addition, back flushing directly acts on surface, successful and rapidly, the recoil water yield is economized, and has very strong practicality and wide application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Air flotation biological filter tank integration apparatus of the embodiment of the present invention.
Fig. 2 is the structural representation of the air dissolving system in the embodiment of the present invention.
In figure, 1, elevated tank, 2, dissolving tank, 3, air flotation pool, 4, dissolving, 5, gate valve, 6, magnetic valve, 7, baffle plate in the same way, 8, biologic packing material, 9, stopping valve, 10, slag-drip opening, 11, packing, 12, air compressor machine, 13, inner core, 14, urceolus, 15, former water water inlet pipe, 16, dissolved air water water inlet pipe, 17, rising pipe, 18, back flushing water inlet pipe, 19, radiator drain, 20, drain pipe, 21, air intake control valve, 22, liquid level sensor, 23, water hole, 24, reducing valve, 25, return line, 26, backflow water pump, 27, water purifying tank, 28, inlet pipe.
Embodiment
Air flotation biological filter tank integration apparatus of the present invention, as shown in Figure 1, comprise air flotation pool 3, described air flotation pool 3 comprises inner core 13 and to be located at outside inner core 13 and to be highly greater than the urceolus 14 of inner core, bottom described inner core 13 or lower wall offer water-in and be connected with former water water inlet pipe 15, described inner core 13 top is introduced dissolved air water water inlet pipe 16 and is stretched in inner core 13, biologic packing material 8 is provided with in annulus between described inner core 13 and urceolus 14, to carry out biofiltration process to the water body after air-flotation process, bottom described urceolus 14 or lower wall offer water outlet and be connected with extension tube attached, position higher than inner core 13 top in described urceolus 14 is provided with slag-drip opening 10, described slag-drip opening 10 is connected to outside urceolus 14 through scum pipe, to discharge scum silica frost.Air flotation pool of the present invention adopts concentric tube structure design, and pending former water is intake bottom inner core, carries out air-flotation process from bottom to top, then turns down and enters in annulus from top to bottom, carries out biofiltration process.
Above-mentioned extension tube attached divides two-way, and a road is rising pipe 17, and a road is back flushing water inlet pipe 18, and described rising pipe 17 and back flushing water inlet pipe 18 are respectively equipped with valve, to carry out switch selection and Flow-rate adjustment.In the present embodiment, described rising pipe 17 and back flushing water inlet pipe 18 are equipped with a gate valve 5 and a magnetic valve 6, magnetic valve is used for switching normal work and back flushing automatically controlling, gate valve be Non-follow control and maintenance time use.
The present invention also comprises elevated tank 1, the import of described elevated tank 1 meets former supply mains, the radiator drain 19 of described elevated tank 1 connects described former water water inlet pipe 15 and back flushing water inlet pipe 18 respectively, and described former water water inlet pipe is provided with valve, to carry out switch selection and Flow-rate adjustment.In the present embodiment, described former water water inlet pipe 15 is also provided with a gate valve 5 and a magnetic valve 6, magnetic valve is used for switching normal work and back flushing automatically controlling, gate valve be Non-follow control and maintenance time use.
During normal work, open former water water inlet pipe 15, rising pipe 17 solenoid, close back flushing water inlet pipe 18 solenoid; During back flushing, close former water water inlet pipe 15, rising pipe 17 solenoid, open back flushing water inlet pipe 18 solenoid.
The present invention also comprises the dissolving tank 2 for dissolving coagulating agent, and the drain pipe 20 of described dissolving tank 2 is through former water water inlet pipe 15 described in a certain amount of liquid feeding equipment access.Coagulating agent, after dissolving tank dissolves, is added in former water water inlet pipe by quantitative liquid feeding equipment.
It is in order to stationary flow that above-mentioned inner core 13 lower inside is provided with baffle plate 7, in the same way, ensures the stable of hydraulics, and two is that coagulating agent for adding provides certain Pre-coagulation effect, ensures certain coagulating agent agitation speed gradient.
Above-mentioned urceolus 14 top is also provided with dissolved air water water inlet pipe 16 and stretches in the annulus between inner core and urceolus, and each dissolved air water water inlet pipe is equipped with stopping valve 9.The stopping valve stretched on the dissolved air water water inlet pipe in inner core is normally open, only needs to open the stopping valve on the dissolved air water water inlet pipe between inner core and urceolus during back flushing.
In the present embodiment, 4 DN15 dissolved air water water inlet pipes are laid at urceolus 14 top, water inlet pipe mouth is arranged on 200mm place, biologic packing material surface, the stopping valve on pipe is only opened when back flushing, biologic packing material surface is stirred to rinse, wash by the moment of bubble the body refuse impelling filtering layer surface to retain by rubbing with the hands to be separated, final flotation enters slag-drip opening to water surface with body refuse, and laying 4 is for rinsing even consideration.
Above-mentioned slag-drip opening 10 is the devices of falling toroidal, rinses stir filtering layer surface during back flushing with dissolved air water, and wash by the moment of bubble the body refuse impelling filtering layer surface to retain by rubbing with the hands and be separated, flotation is discharged to water surface to center hydraucone in excessive slag mode.
As shown in Figure 2, the present invention also comprises by dissolving 4, backflow water pump 26, air compressor machine 12, the air dissolving system that air intake control valve 21 and liquid level sensor 22 are formed, the water outlet access water purifying tank 27 of described air flotation pool 3, the return line 25 of drawing from described water purifying tank is connected to dissolving 4 through backflow water pump 26, the inlet pipe 28 of drawing from described air compressor machine 12 is connected to dissolving 4 through air intake control valve 21, described dissolving 4 is provided with packing 11, described liquid level sensor 22 is connected with described air intake control valve 21, to be driven the action of air intake control valve by the liquid level change in dissolving 4, described dissolving 4 water outlet is connected with described dissolved air water water inlet pipe 16.
Air dissolving system whole-course automation is arranged, and its groundwork process is as follows:
1) dissolving water inlet, in tank, gaseous tension remains on more than 0.4MPa, mixing wastewater with air, and intake valve cuts out, and air compressor machine does not work, the normal water outlet of dissolved air water, and this water flow overdraft pump working lift is at about 42m;
2) along with molten gas carries out, in tank, gas is molten gradually releases, and dissolved air water water level rises, and arrive preset water level, float ball liquid level sensor action, opens intake valve;
3) preset air compressor machine work trigger pressure and be greater than 0.45MPa, inlet open, air compressor machine automatic operation, because tank internal pressure raises, the corresponding rising of pressure water pump work lift, discharge declines, and water flow controls primarily of pressure above external valve keying degree and water body, substantially constant, such water level enters to be less than, and in tank, water level starts to decline;
4) in tank water level decreasing to preset water level, float(ing)valve is action again, closes intake valve, in tank in water level decreasing to pressure water pump work lift, water flow, tank after gaseous tension three trim point, again along with air constantly molten releasing and progressively rising, return said process cycle operation.
Present invention also offers the control method of above-mentioned Air flotation biological filter tank integration apparatus water supply process, specific as follows:
When ammonia nitrogen concentration in former water is not more than 1.0mg/L (low ammonia nitrogen concentration), controlling reflux ratio is 15 ~ 20%, and hydraulic load is 4 ~ 5m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 6 ~ 8h, and described reflux ratio is the ratio of recirculation water flow and water flow in rising pipe in return line.
When ammonia nitrogen concentration in former water is greater than 2.0mg/L (high-concentration ammonia-nitrogen), suitably can reduce former water flooding quantity, reduce hydraulic load, extend the residence time, namely controlling reflux ratio is 25 ~ 30%, and hydraulic load is 3 ~ 4m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 8 ~ 12h.
When in former water, algae counts is greater than 10
6time individual/L (high algae situation), controlling reflux ratio is 25 ~ 30%, and hydraulic load is 2 ~ 3m
3/ (m
2h), coagulating agent input amount is 25 ~ 30mg/L, and backwashing period is 24 ~ 36h.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (4)
1. the control method of an Air flotation biological filter tank integration apparatus, it is characterized in that: described Air flotation biological filter tank integration apparatus comprises air flotation pool, for dissolve coagulating agent dissolving tank and by dissolving, backflow water pump, air compressor machine, the air dissolving system that air intake control valve and liquid level sensor are formed, described air flotation pool comprises inner core and to be located at outside inner core and to be highly greater than the urceolus of inner core, bottom described inner core or lower wall offer water-in and be connected with former water water inlet pipe, described inner core top is introduced dissolved air water water inlet pipe and is stretched in inner core, biologic packing material is provided with in annulus between described inner core and urceolus, to carry out biofiltration process to the water body after air-flotation process, bottom described urceolus or lower wall offer water outlet and be connected with extension tube attached, position higher than inner core top in described urceolus is provided with slag-drip opening, described slag-drip opening is connected to outside urceolus through scum pipe, to discharge scum silica frost, the drain pipe of described dissolving tank is through former water water inlet pipe described in a certain amount of liquid feeding equipment access, the water outlet access water purifying tank of described air flotation pool, the return line of drawing from described water purifying tank is connected to dissolving through backflow water pump, the inlet pipe of drawing from described air compressor machine is connected to dissolving through air intake control valve, described dissolving is provided with packing, described liquid level sensor is connected with described air intake control valve, to be driven the action of air intake control valve by the liquid level change in dissolving, described dissolving water outlet is connected with described dissolved air water water inlet pipe, described extension tube attached divides two-way, and a road is rising pipe, and a road is back flushing water inlet pipe, and described rising pipe and back flushing water inlet pipe are respectively equipped with valve, to carry out switch selection and Flow-rate adjustment,
When in former water, ammonia nitrogen concentration is not more than 1.0mg/L, controlling reflux ratio is 15 ~ 20%, and hydraulic load is 4 ~ 5m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 6 ~ 8h, and described reflux ratio is the ratio of recirculation water flow and water flow in rising pipe in return line;
When in former water, ammonia nitrogen concentration is greater than 2.0mg/L, controlling reflux ratio is 25 ~ 30%, and hydraulic load is 3 ~ 4m
3/ (m
2h), coagulating agent input amount is 10 ~ 20mg/L, and backwashing period is 8 ~ 12h, and described reflux ratio is the ratio of recirculation water flow and water flow in rising pipe in return line;
When in former water, algae counts is greater than 10
6individual/L time, control reflux ratio be 25 ~ 30%, hydraulic load is 2 ~ 3m
3/ (m
2h), coagulating agent input amount is 25 ~ 30mg/L, and backwashing period is 24 ~ 36h, and described reflux ratio is the ratio of recirculation water flow and water flow in rising pipe in return line.
2. the control method of Air flotation biological filter tank integration apparatus according to claim 1, it is characterized in that: also comprise elevated tank, the import of described elevated tank meets former supply mains, the radiator drain of described elevated tank connects described former water water inlet pipe and back flushing water inlet pipe respectively, described former water water inlet pipe is provided with valve, to carry out switch selection and Flow-rate adjustment.
3. the control method of Air flotation biological filter tank integration apparatus according to claim 1, is characterized in that: described inner core lower inside is provided with baffle plate.
4. the control method of Air flotation biological filter tank integration apparatus according to claim 1, is characterized in that: described urceolus top is also provided with dissolved air water water inlet pipe and stretches in the annulus between inner core and urceolus, and each dissolved air water water inlet pipe is equipped with valve.
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| CN201310524088.2A CN103539318B (en) | 2013-10-31 | 2013-10-31 | Air flotation biological filter tank integration apparatus and control method thereof |
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| CN201310524088.2A CN103539318B (en) | 2013-10-31 | 2013-10-31 | Air flotation biological filter tank integration apparatus and control method thereof |
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| CN103539318A CN103539318A (en) | 2014-01-29 |
| CN103539318B true CN103539318B (en) | 2016-03-16 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105645669A (en) * | 2014-12-18 | 2016-06-08 | 镇江市规划设计研究院 | River water circulation and water purification combined system and purification method thereof |
| CN108218098A (en) * | 2016-12-13 | 2018-06-29 | 黑龙江吉纳森生物工程股份有限公司 | A kind of biological reinforced processing unit of oily wastewater |
| CN110002569B (en) * | 2019-04-12 | 2024-05-03 | 上海行恒科技有限公司 | Electric power-free hydrogen-rich water shower device |
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| CN1413916A (en) * | 2002-07-17 | 2003-04-30 | 王文兵 | Air-floated biological treatment process and equipment |
| CN201292263Y (en) * | 2008-12-05 | 2009-08-19 | 北京工业大学 | Vertical flow type aerobic gas float filter chamber |
| CN101823798B (en) * | 2010-05-11 | 2012-10-17 | 江苏元宏科技发展有限公司 | Oily water treatment system of hydropower station |
| KR101247990B1 (en) * | 2012-08-23 | 2013-04-08 | 대한민국 | Biofiltering tank using microbial media with solid removal function |
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