CN103172165A - Suspended ceramic biological aerated pool and method for treating raw water by applying suspended ceramsite biological aerated pool - Google Patents
Suspended ceramic biological aerated pool and method for treating raw water by applying suspended ceramsite biological aerated pool Download PDFInfo
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- CN103172165A CN103172165A CN2013101097086A CN201310109708A CN103172165A CN 103172165 A CN103172165 A CN 103172165A CN 2013101097086 A CN2013101097086 A CN 2013101097086A CN 201310109708 A CN201310109708 A CN 201310109708A CN 103172165 A CN103172165 A CN 103172165A
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses a suspended ceramic biological aerated pool and a method for treating raw water by applying the suspended ceramsite biological aerated pool. A water and gas distribution area, a lower filtering plate, a suspended ceramisite filler material layer, an upper filter screen and a water outlet area are sequentially arranged in a pool body of an up-flow aerated filtering pool from bottom to top, and the water outlet area and a water outlet channel are connected; a plurality of filtering heads are evenly distributed on the lower filtering plate and penetrate through the lower filtering plate; ceramsites of the suspended ceramisite filler material layer can be prepared by adopting shale as a raw material, crushing through a crusher, drying, pulverizing through a ball mill, pelletizing through a turnplate pelletizer and sintering in a rotary kiln at high temperature of 1100-1300 DEG C, wherein the sintering time lasts for 20+/-2min, and the apparent density is 0.75-0.95g/cm<3>. When being used for biologically pretreating a micro-polluted water source, the method can be used for nitrifying ammonia nitrogen, removing iron and manganese, pre-oxidizing for coagulation enhancement and removing taste and odor; and when being used for various sewage biochemical treatments, not only is the organic matter degradation efficiency high, but also the backflow can be enhanced conditionally, the nitrogen removal and impact load resistance capabilities can be greatly improved.
Description
Technical field
The present invention relates to water treatment field, but specifically relate to suspension haydite BAF and use the method for its biochemical treatment biochemical waste water or pretreating micro-polluted raw water.
Background technology
BAF is the sewage disposal technology that grows up late 1980s, this technology adopts the filler of high-specific surface area as biofilm carrier, integrates biochemical treatment and filtering function, and processing efficiency is high, floor space is little, has at home and abroad all obtained applying.In recent years, because the urban drinking water source organic contamination is day by day serious, in the urgent need to introduce Biological Pretreatment Techniques in " coagulation-precipitation-sand filtration-sterilization " city water treatment process of routine, adopt the BAF pretreatment technology also to come into one's own.
The patent No. is ZL2006 1 0035882.1, name is called the folded formula BAF of pretreating micro-polluted raw water and the Chinese invention patent of method is that the applicant proposed in 2006, this patent is fallen streaming macrobead filter material filter pool as pre-treatment with the first step, removes water pollutant with second stage flow-raising aeration biological filtering pool.For polluting slight former water, although the Biological Pretreatment effect is fine, when folded formula BAF adopts high filtering velocity, head loss is larger.On this basis, the applicant proposed again high speed water supply aerating biological filters and uses the patent application of the method for its pretreating micro-polluted raw water in 2008, and in 2011 granted, the patent No. is ZL200810028952.9.This patent is only used the one-level flow-raising aeration biological filtering pool after taking the anti-clogging plug measure, the folded formula BAF of water head loss by filtration obviously reduces.But existing ceramic grain filter BAF is difficult in flushing process expand because filtrate thickness is larger, lower filter material layer deposition phenomenon is more obvious after long-play, often cause filtrate to harden, water head loss by filtration increases year by year, and biochemical efficiency also is downward trend.
Although existing plastic grain floating filter material is used for biological aerated filter process at present, mostly be foam grain, have not only that smooth surface is hydrophobic causes the poor defective of bio-film colonization condition, and also yielding, rigidity increase production cost increases substantially again.Fixed bed filtrate sludge collecting board knot problem can be avoided occurring in employing fluidized bed bio filter tank, and existing multiple plastics floating stuffing, realize fluidisation in reactor by aeration at present, but structure is more complicated, and specific surface area is less.The plastics floating stuffing is in the abundant fluidisation of the larger occasion of aeration intensity, therefore use comparatively successful in sewage treatment project.And in the feedwater biological pre-treatment process, the pollution level of former water often is seasonal variation, former water of some periods pollutes slight, and oxygen in water is sufficient, need not oxygen supply, but in order to keep the fluidized state of plastics floating stuffing, still need larger aeration intensity, otherwise floating stuffing or the floating water surface, or at the bottom of being sink to the pond, can not mix with current contacting, therefore operation energy consumption is larger comprehensively.
Summary of the invention
Shortcoming for prior art, the invention provides a kind of filtrate biomass large, biomembranous mass transfer condition is good, and biological activity is strong, and water head loss by filtration is little, can deposition not harden after the complete fluidisation of suspension haydite filtering layer, backwash rate is low, and flushing cycle is long, and backwashing manner is simple, move energy-efficient, the suspension haydite BAF of biopurification effect stability.
The ceramic grain filter BAF is combined with the process characteristic of floating stuffing aeration tank, kept ceramic grain filter antifriction intensity high, specific surface area is large, the hydrophilic easy to be filmed of surface irregularity, the advantage that cost performance is high, absorbed the function that floating stuffing can fluidisation, its purpose is to overcome the defects that existing fixed bed and fluidisation pond biological filtering tank process exist.
Another object of the present invention is to provide the method that above-mentioned suspension haydite BAF is processed former water of using.
Purpose of the present invention is achieved through the following technical solutions:
Suspension haydite BAF comprises inlet flume, distributing trough and flow lifting type aerating filter; Be provided with water inlet pipe between inlet flume and distributing trough, water inlet pipe is provided with water intaking valve; One end of water shoot is connected with distributing trough, the other end access drain collector, and distributing trough is communicated with the body lower end, pond of flow lifting type aerating filter by distributing hole; Be followed successively by from top to bottom water and air distributing district, lower filter plate, suspension ceramic grain filter floor, upper filter screen and exhalant region in the pond body of flow lifting type aerating filter, exhalant region is connected with outlet canal; Run through lower filter plate and be evenly arranged a plurality of filters; Aeration head is located at bottom, water and air distributing district, aeration head is connected with the air main with the gas flushing arm by aeration branch pipe, aeration branch pipe and gas flushing arm are connected in parallel, and are respectively equipped with the gentle valve that rushes of aeration valve on aeration branch pipe and gas flushing arm, and the air main is connected with at least one gas blower;
It is raw material that the haydite of described suspension ceramic grain filter layer adopts shale, after fragmentation, oven dry, abrasive dust, granulation, fires 20 ± 2min in rotary kiln, 1100～1300 ℃ of firing temperatures; The haydite of coming out of the stove sieves through after naturally cooling, selects 8～12mm particle diameter, and then the water flotation obtains floating haydite of initial stage, apparent density 0.75～0.95g/cm
3, tap density 0.4～0.6g/cm
3, voidage 〉=35% is pressed stacking volume calculated specific surface area 〉=3 * 10
4m
2/ m
3, water infiltration pellet density 0.9～1.1g/cm
3
For further realizing the object of the invention, the thickness of described suspension ceramic grain filter layer is preferably 3～6m.The pond body of aerating filter is preferably rectangle.Described distributing trough is positioned at the below of pond body one side, uniform a plurality of distributing holes on distributing trough and pool wall that the pond body is connected.Water shoot one end in filter tank is connected with distributing trough, and an end is connected with drain collector.Described gas blower is preferably many.
Use suspension haydite BAF and process the method for former water: the former water of allocating suspension haydite BAF inlet flume into imports distributing trough by water inlet pipe, enter water and air distributing district, bottom, filter tank by distributing hole, carry out the slight drag water distribution by the filter of arranging on lower filter plate, former water is uniform to the whole filtering surface in lower filter plate top from water distributing area; The aeration head that is positioned at bottom, water and air distributing district will be uniform to the whole filtering surface in water and air distributing district from the pressurized air of gas blower by the air main, flow and mix with former water is upper in the same way, then passing the microbial film of growing in lower filter plate and suspension ceramic grain filter layer contacts, by mass transfer and oxygen supply, remove ammonia nitrogen, organism in water, smell flavor material and iron and manganese; Water after processing passes upper filter screen and arrives exhalant region, falls into outlet canal through effluent weir; Contain the wash-down water of suspended substance or enter outlet canal with water outlet, or through distributing trough at the bottom of the pond outside water shoot is discharged the pond.
The former water that the present invention allocates suspension haydite BAF inlet flume into imports distributing trough by water inlet pipe, enters water and air distributing district, bottom, filter tank by distributing hole, realizes along the filter tank one side uniform water distribution.Be furnished with filter on lower filter plate, carry out the slight drag water distribution, former water is uniform to the whole filtering surface in lower filter plate top from water distributing area.The aeration head that is positioned at bottom, water and air distributing district will be also uniform to the whole filtering surface in water and air distributing district and upper reaches in the same way after former water mixes from the pressurized air of gas blower, contact with the epontic microbial film of suspension ceramic grain filter, by mass transfer and oxygen supply, remove ammonia nitrogen, organism in water, smell flavor material and iron and manganese etc.Spherical suspending ceramic grain filter water infiltration pellet density 0.9～1.1g/cm
3, very approaching with the density of water, under the normal operation of filter tank, the suspension haydite is looked the aeration intensity size and is in microdilatancy, suspension and even part fluidized state, therefore its surface biological membrane mass transfer condition is good, biological activity is strong, the biopurification effect stability.General 8～12mm the particle diameter that adopts of suspension haydite, under normal operation microdilatancy, suspension and even fluidized state, the ability of cut-off filter turbidity significantly descends, water head loss by filtration is little and increases slowly, extended the backwashing period in filter tank, and have ready conditions and increase substantially filtering velocity, reduce the project occupation of land area.Suspension haydite BAF flushing front and back head loss changes very little, adopts the blast aeration system of concentrating can not cause aeration inequality between each filter tank, can reduce in a large number the gas blower number of units, avoids the airflow balance measure of complexity; The water infiltration pellet density of suspension haydite and the density of water are very approaching, therefore the backwash rate that needs significantly reduces than ordinary ceramsite filler in aerated biologic filter pool, suspension haydite filtering layer fluidisation fully during gas flushing, can be under the gas flushing condition by water inlet or draining with the inert substance that accumulates in the suspended substance of wash-out, filtrate and the silt particle at the bottom of being deposited on the pond take the filter tank out of, backwashing manner is simple, move energy-efficient
The present invention compared with prior art has following advantage and beneficial effect:
1, the spherical suspending ceramic grain filter of suspension haydite BAF is that after adopting shale through fragmentation, oven dry, abrasive dust, granulation, high-temperature firing forms in rotary kiln, and its profile is approximate spherical irregular particle, selects 8～12mm particle diameter through sieving; Then it is carried out flotation and obtain floating haydite of initial stage, its percentage of damage and wear rate sum≤2%, apparent density is at 0.75～0.95g/cm
3Scope, tap density 0.4～0.6g/cm
3, voidage 〉=35%, specific surface area 〉=3 * 10
4m
2/ m
3(pressing stacking volume calculates) immerses the water infiltration pellet density 0.9～1.1g/cm in the pond for a long time
3Suspension haydite epidermis is coarse hydrophilic, in water after the cultivation biofilm, and surface biological film adhere firmly.When the filter tank is normally moved, the suspension haydite is looked the aeration intensity size and is in microdilatancy, suspension and even part fluidized state, therefore its surface biological membrane mass transfer condition is good, biological activity is strong, high to micro-polluted raw ammonia nitrogen and organism purification efficiency, preoxidation help solidifying and except smell, deironing and demanganization effective, can stablize and realize that the feedwater Biological Pretreatment improves the target of raw water quality; When being applied to the sewage biochemical treatment, having ready conditions adds strong inverse flow, has increased substantially the ability of denitrogenation and anti-shock loading.
2, suspension haydite BAF adopts distributing trough perforation water distribution and the water distribution mode that combines in lower filter plate filter slight drag water distribution, adopt the even gas distribution of aeration head and the distribution mode that the distribution of filter plate filter secondary combines, can satisfy the inhomogeneity requirement of water and air distributing and flush discharge.
3, the water and air distributing district has sand setting and precipitation function, and the lower filter cap of stockless filter has the effect of cut-off filter impurity, is conducive to protect suspension ceramic grain filter filtering layer.Aeration head is arranged under lower filter plate, is easy to maintain and repair methods, lay 0.2m suspension haydite under filter plate, keep cleaning under filter plate, prevent deposition or grow biology.
4, suspension haydite BAF adopts upflowing, is beneficial to the microdilatancy of ceramic grain filter layer, suspension and even fluidisation, improves aeration efficient and biochemical efficiency.
5, arrange upper filter screen above the suspension ceramic grain filter, ceramic grain filter is limited in filter screen below, can make the water infiltration pellet density less than 1g/cm
3Haydite keep fully contacting with water, also have the effect that suspends the haydite loss and prevent the filtrate bias current of preventing simultaneously.
6, filter tank water distributing area bottom aeration head has the gentle washing function of blast aeration.The air blast machine room central gas supply that aeration head is shared by many ponds, under the aeration state, the even air feed in each filter tank; Under the flushing state, with the gas flushing valve opening in this filter tank, the air blast machine room strengthens air demand simultaneously, aeration head to this filter tank increases air feed, thereby realize that aeration and gas flushing share the blast aeration head, not only reduced gas blower number of units and air line, also improved serviceability.
7, the flushing of suspension haydite BAF can be selected flushing or lower the flushing.Keeping gas flushing under normal water inlet state, be flushing, gas flushing can make filtrate be in fluidized state, by the shearing action of upstream and ascending current and the rolling resistance effect appropriateness cleaning haydite surface of haydite, water outlet this moment contains the eluate of flushing, can flow directly into outlet canal, also can discharge separately, depending on technique needs.Upper flushing can make filtrate fluidisation in short-term, and appropriateness is cleaned the turbidity material of suspension ceramic grain filter biofilm surface, controls biomembranous thickness and improves its activity, keeps the homogeneity of filter tank water and air distributing, stablizes biochemical effect.Upper flushing is simple, and energy consumption is little, and the flushing cycle that suitable selection is shorter is recommended once a day; Stop gas flushing under water and the opening water discharge valve hull-borne in this filter tank, it is lower flushing, gas flushing can make the suspension ceramic grain filter be in complete fluidized state between lower drainage period, clean the haydite surface by the rolling resistance effect appropriateness of the shearing action of air-flow and haydite, and can be with the proportion of the filtrate bottom accumulation larger suspended substance of lower draining and settling pass the haydite filtering layer that the bottom is in fluidized state and discharge outside the pond.Lower flushing is more complicated, and energy consumption is larger, and the flushing cycle that suitable selection is long is recommended a few days once.
Description of drawings
Fig. 1 is suspension haydite BAF structural representation.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described, but the scope of protection of present invention is not limited to the scope of this embodiment statement.
As shown in Figure 1, suspension haydite BAF comprises inlet flume 1, distributing trough 2 and flow lifting type aerating filter, and the pond body of described aerating filter is rectangle, and inlet flume 1 and distributing trough 2 lay respectively at the upper and lower of the same side of pond body.Be provided with water inlet pipe 3 between inlet flume 1 and distributing trough 2, water inlet pipe 3 is provided with water intaking valve 4.One end of water shoot 12 is connected with distributing trough 2, the other end access drain collector (discharging outside the pond), and water shoot 12 is provided with water discharge valve 13.Distributing trough 2 is communicated with the body lower end, pond of flow lifting type aerating filter by distributing hole 5.Be followed successively by from top to bottom water and air distributing district 6, lower filter plate 7, suspension ceramic grain filter floor 8, upper filter screen 9 and exhalant region 10 in the body of pond, exhalant region 10 is connected connection with outlet canal; Run through lower filter plate 7 and be evenly arranged a plurality of filters; Aeration head 14 is located at 6 bottoms, water and air distributing district, aeration head 14 is connected with air main 17 with the gas flushing arm by aeration branch pipe, aeration branch pipe and gas flushing arm are connected in parallel, be respectively equipped with the gentle valve 16 that rushes of aeration valve 15 on aeration branch pipe and gas flushing arm, air main 17 is connected with at least one gas blower 18; Gas blower 18 is preferably many.Upper filter screen can make the water infiltration pellet density less than 1g/cm
3Haydite keep fully contacting with water, also have the effect of the haydite loss that prevents from suspending simultaneously; Lower filter plate can be realized the slight drag water distribution, and when the emptying of filter tank the support ceramic grain filter, for the maintain and repair methods of water and air distributing facility under filter plate provides passage.
The thickness of suspension ceramic grain filter layer 8 is generally 3～6m; this haydite is that employing shale is raw material; after jaw crushing crusher machine, the oven dry of kiln tail gas, made powder of ball mill, tumbling disk granulator granulation, fire 20 ± 2min in rotary kiln, 1100～1300 ℃ of firing temperatures.The haydite profile is selected 8～12mm particle diameter for approximate spherical irregular particle through screening; Then it is carried out flotation and obtain floating haydite of initial stage, its percentage of damage and wear rate sum≤2%, apparent density is at 0.75～0.95g/cm
3Scope, tap density 0.4～0.6g/cm
3, voidage 〉=35%, specific surface area 〉=3 * 10
4m
2/ m
3(pressing stacking volume calculates) immerses the water infiltration pellet density 0.9～1.1g/cm in the pond for a long time
3The selection of shale obtains floating haydite ratio of initial stage＞90% with flotation, and the apparent density of this part haydite is at 0.75～0.95g/cm
3Scope is good.Suspension haydite epidermis is coarse hydrophilic, in water after the cultivation biofilm, and surface biological film adhere firmly.When the filter tank was normally moved, the suspension haydite was looked the aeration intensity size and is in microdilatancy, suspension and even part fluidisation (cyclic motion) state, therefore the microbial film mass transfer condition is good, biological activity is strong, the biopurification effect stability, and water head loss by filtration is little; And the complete fluidisation of suspension haydite filtering layer during gas flushing can not harden in deposition, and the backwash rate of requirement is low, and flushing cycle is long, and backwashing manner is simple, moves energy-efficient.
When using the former water of suspension haydite BAF processing, the former water of allocating suspension haydite BAF inlet flume 1 into imports distributing trough 2 by water inlet pipe 3 and water intaking valve 4, enter water and air distributing district, bottom, filter tank 6 by distributing hole 5, realize along the filter tank one side uniform water distribution.Be furnished with filter on lower filter plate 7, carry out the slight drag water distribution, former water is uniform to the lower filter plate 7 whole filtering surfaces in top from water distributing area 6.The aeration head 14 that is positioned at 6 bottoms, water and air distributing district will be uniform to water and air distributing district 6 whole filtering surfaces from the pressurized air of gas blower 18 by air main 17, aeration branch pipe and aeration valve 15, flow and mix with former water is upper in the same way, then passing lower filter plate 7 contacts with the microbial film of growth in suspension ceramic grain filter layer 8, by mass transfer and oxygen supply, remove ammonia nitrogen, organism in water, smell flavor material and iron and manganese etc.Water after processing passes upper filter screen 9 and arrives exhalant region 10, falls into outlet canal 11 through effluent weir.Suspension haydite BAF is concentrated aeration by aeration blower 18, by opening gas blower 18 number of units and taking conversion system to regulate air demand, needs with the difference of adaptogen water change of water quality to air demand.
One side of filter tank water distributing area is furnished with distributing trough, and former water imports distributing trough by water inlet pipe, enters water and air distributing district, bottom, filter tank by distributing hole, realizes along the filter tank one side uniform water distribution.The filter of lower filter plate carries out the slight drag water distribution, and former water is uniform to whole filtering surface from water distributing area, evenly enters top suspension ceramic grain filter layer.
The aeration head system of filter tank water distributing area bottom has the gentle washing function of blast aeration.The air blast machine room central gas supply that the aeration head system is shared by many ponds, under the aeration state, the even air feed in each filter tank; This filter tank is opened gas flushing valve and is namely entered the flushing state, and air blast this moment machine room strengthens air demand, increases air feed to the aeration head system in this filter tank.Aeration head can either be cleaned the filter tank water distributing area below being arranged in filter plate, prevents its deposition or grows biology, is easy to again maintenance.
With gas flushing and this filter tank water intaking valve and water discharge valve interlock, can realize upper flushing or lower the flushing are carried out in this filter tank.Keeping gas flushing under normal water inlet state, be flushing, can appropriately clean haydite surperficial, the water outlet that contains eluate can flow directly into outlet canal, also can discharge separately, depending on technique needs; Stopping gas flushing under water and the opening water discharge valve hull-borne in this filter tank, is lower flushing, can appropriateness cleans the haydite surface, discharges outside the pond by suspended substance and settling that lower draining is larger with the proportion of filtrate bottom accumulation.
when suspension haydite BAF need to go up flushing (flushing cycle is generally 1d), open gas and rush valve 16, and increase gas blower 18 unlatching number of units or take conversion system to strengthen air demand to satisfy the requirement of rinsing required air blasting intensity on this filter tank, the gas flushing air is through enraged blower fan 18, air main 17 is gentle rushes arm and gas rushes valve 16 access aeration heads 14, uniformly mix at the upper reaches in the same way with former water to water and air distributing district 6 whole filtering surfaces, pass lower filter plate 7 and arrive suspension ceramic grain filter layer 8, make ceramic grain filter layer 8 be in fluidized state, mutual collision friction, simultaneously under the shearing action of air-flow, peel off the turbidity material on ceramic grain filter surface and aging microbial film, the current that thereupon rise fall into outlet canal 11.
(flushing cycle is generally 7～15d), opens gas and rushes valve 16, and increase gas blower 18 unlatching number of units or take conversion system to strengthen air demand to satisfy the requirement of rinsing required air blasting intensity under this filter tank when suspension haydite BAF need to be rinsed down.The gas flushing air rushes arm and gas rushes valve 16 access aeration heads 14 through gas blower 18, air main 17 are gentle, then uniform to the gas punching that makes progress of water and air distributing district 6 whole filtering surfaces, pass lower filter plate 7 and arrive suspension ceramic grain filter layer 8, make ceramic grain filter layer 8 be in fluidized state, mutual collision friction, simultaneously under the shearing action of air-flow, peel off the turbidity material on ceramic grain filter surface and aging microbial film.Simultaneously, the silt particle that is deposited on 6 bottoms, water and air distributing district is subject to from turbulent fluctuation in water under the airflow stirring effect of aeration head 14.After 1～3 minute, close water intaking valve 4, opening water discharge valve 13, in the pond, suspended substance will enter water and air distributing district 6 by the filter arranged on lower filter plate 7 from suspension ceramic grain filter floor 8 along with the filter tank draining, enter distributing trough 2 from distributing hole 5 together with the silt particle of turbulent fluctuation at the bottom of the pond, discharging outside the pond through water shoot 12.Finishing lower program of rinsing is: close water discharge valve 13, open water intaking valve 4, air demand is adjusted to normal operating condition, closing holds one's breath rushes valve 16.
It is surperficial that the present invention can appropriately clean haydite by upper flushing, controls biomembranous thickness, keeps the homogeneity of filter tank water and air distributing, stablizes biochemical effect; The proportion of filtrate bottom accumulation can be discharged outside the pond by larger suspended substance and settling by lower flushing, prevent that filtrate from hardening.
Upper filter screen has been arranged in suspension ceramic grain filter top, arranged beneath time filter plate, with the fluidisation space constraint of suspension ceramic grain filter between upper filter screen and lower filter plate.Suspension haydite BAF is concentrated aeration by aeration blower 18, by opening gas blower 18 number of units and taking conversion system to regulate air demand, and need to the difference of air demand with the adjustment of adaptogen water change of water quality and air blasting intensity.
During normal operation, the haydite of suspension ceramic grain filter layer 8 is in microdilatancy, suspension and even part fluidized state, depending on the aeration intensity size, therefore its surface biological membrane mass transfer condition is good, biological activity is strong, the biopurification effect stability, and water head loss by filtration is little; And the complete fluidisation of suspension haydite filtering layer during gas flushing can not harden in deposition, and the backwash rate of requirement is low, and flushing cycle is long, and backwashing manner is simple, moves energy-efficient.When the present invention is used for the micro polluted source Biological Pretreatment, can nitrated ammonia nitrogen, deferrization and demanganization, preoxidation help solidifying and remove and smell flavor; When being used for various sewage biochemical treatment, not only degradation of organic substances efficient is high, and has ready conditions and add strong inverse flow, increases substantially the ability of denitrogenation and anti-shock loading.
Claims (7)
1. suspension haydite BAF, is characterized in that comprising inlet flume, distributing trough and flow lifting type aerating filter; Be provided with water inlet pipe between inlet flume and distributing trough, water inlet pipe is provided with water intaking valve; One end of water shoot is connected with distributing trough, the other end access drain collector, and distributing trough is communicated with the body lower end, pond of flow lifting type aerating filter by distributing hole; Be followed successively by from top to bottom water and air distributing district, lower filter plate, suspension ceramic grain filter floor, upper filter screen and exhalant region in the pond body of flow lifting type aerating filter, exhalant region is connected with outlet canal; Run through lower filter plate and be evenly arranged a plurality of filters; Aeration head is located at bottom, water and air distributing district, aeration head is connected with the air main with the gas flushing arm by aeration branch pipe, aeration branch pipe and gas flushing arm are connected in parallel, and are respectively equipped with the gentle valve that rushes of aeration valve on aeration branch pipe and gas flushing arm, and the air main is connected with at least one gas blower;
It is raw material that the haydite of described suspension ceramic grain filter layer adopts shale, after fragmentation, oven dry, abrasive dust, granulation, fires 20 ± 2min in rotary kiln, 1100～1300 ℃ of firing temperatures; The haydite of coming out of the stove sieves through after naturally cooling, selects 8～12mm particle diameter, and then the water flotation obtains floating haydite of initial stage, apparent density 0.75～0.95g/cm
3, tap density 0.4～0.6g/cm
3, voidage 〉=35% is pressed stacking volume calculated specific surface area 〉=3 * 10
4m
2/ m
3, water infiltration pellet density 0.9～1.1g/cm
3
2. suspension haydite BAF according to right 1, it is characterized in that: the thickness of described suspension ceramic grain filter layer is 3～6m.
3. suspension haydite BAF according to right 1, it is characterized in that: the pond body of described aerating filter is rectangle.
4. suspension haydite BAF according to right 1, it is characterized in that: described distributing trough is positioned at the below of pond body one side, uniform a plurality of distributing holes on distributing trough and pool wall that the pond body is connected.
5. suspension haydite BAF according to right 1, it is characterized in that: water shoot one end in filter tank is connected with distributing trough, and an end is connected with drain collector.
6. suspension haydite BAF according to right 1, it is characterized in that: described gas blower is many.
7. use suspension haydite BAF and process the method for former water, it is characterized in that the former water of allocating suspension haydite BAF inlet flume into imports distributing trough by water inlet pipe, enter water and air distributing district, bottom, filter tank by distributing hole, carry out the slight drag water distribution by the filter of arranging on lower filter plate, former water is uniform to the whole filtering surface in lower filter plate top from water distributing area; The aeration head that is positioned at bottom, water and air distributing district will be uniform to the whole filtering surface in water and air distributing district from the pressurized air of gas blower by the air main, flow and mix with former water is upper in the same way, then passing the microbial film of growing in lower filter plate and suspension ceramic grain filter layer contacts, by mass transfer and oxygen supply, remove ammonia nitrogen, organism in water, smell flavor material and iron and manganese; Water after processing passes upper filter screen and arrives exhalant region, falls into outlet canal through effluent weir; Contain the wash-down water of suspended substance or enter outlet canal with water outlet, or through distributing trough at the bottom of the pond outside water shoot is discharged the pond.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103539255A (en) * | 2013-10-12 | 2014-01-29 | 华南理工大学 | Suspended ceramsite-active carbon double-layer filtering tank and method for applying filtering tank in treating raw water |
| CN103896456A (en) * | 2014-03-31 | 2014-07-02 | 北京工业大学 | Process for treating groundwater containing iron and manganese and associated high-concentration ammonia and nitrogen |
| CN104671391A (en) * | 2015-01-27 | 2015-06-03 | 北京中科圣泰环境科技有限公司 | Ozone heterogeneous catalysis oxidization treatment device and technology for hardly degradable organic wastewater |
| CN106577459A (en) * | 2016-12-09 | 2017-04-26 | 武汉长江仪器自动化研究所有限公司 | Intelligent processing system for circulating water for fish culture |
| CN107082490A (en) * | 2017-05-05 | 2017-08-22 | 华南理工大学 | The method of its processing sewage of streaming denitrogenation dephosphorizing expanded bed biofilter and application drops |
| CN107337274A (en) * | 2017-07-14 | 2017-11-10 | 华南理工大学 | The method of its processing domestic sewage of villages and small towns of integrated expanded bed biomembrane Compound filter pool and application |
| CN108191176A (en) * | 2018-03-20 | 2018-06-22 | 黄河勘测规划设计有限公司 | A kind of suspension filter wet land system |
| WO2021017367A1 (en) * | 2019-07-31 | 2021-02-04 | 华南理工大学 | Wastewater treatment device based on biological film granular sludge reactor, and method therefor |
| CN115231768A (en) * | 2022-06-22 | 2022-10-25 | 华南理工大学 | Light ceramsite expansion bed built-in activated carbon filter and method for purifying water by applying same |
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| CN103539255A (en) * | 2013-10-12 | 2014-01-29 | 华南理工大学 | Suspended ceramsite-active carbon double-layer filtering tank and method for applying filtering tank in treating raw water |
| CN103539255B (en) * | 2013-10-12 | 2016-05-04 | 华南理工大学 | Suspension haydite-active carbon double layer filter and apply it and process the method for former water |
| CN103896456A (en) * | 2014-03-31 | 2014-07-02 | 北京工业大学 | Process for treating groundwater containing iron and manganese and associated high-concentration ammonia and nitrogen |
| CN103896456B (en) * | 2014-03-31 | 2015-10-28 | 北京工业大学 | A kind of process association height ammonia nitrogen is containing the technical process of ferrimanganic underground water |
| CN104671391A (en) * | 2015-01-27 | 2015-06-03 | 北京中科圣泰环境科技有限公司 | Ozone heterogeneous catalysis oxidization treatment device and technology for hardly degradable organic wastewater |
| CN106577459A (en) * | 2016-12-09 | 2017-04-26 | 武汉长江仪器自动化研究所有限公司 | Intelligent processing system for circulating water for fish culture |
| CN107082490A (en) * | 2017-05-05 | 2017-08-22 | 华南理工大学 | The method of its processing sewage of streaming denitrogenation dephosphorizing expanded bed biofilter and application drops |
| CN107337274A (en) * | 2017-07-14 | 2017-11-10 | 华南理工大学 | The method of its processing domestic sewage of villages and small towns of integrated expanded bed biomembrane Compound filter pool and application |
| CN108191176A (en) * | 2018-03-20 | 2018-06-22 | 黄河勘测规划设计有限公司 | A kind of suspension filter wet land system |
| CN108191176B (en) * | 2018-03-20 | 2024-02-27 | 黄河勘测规划设计研究院有限公司 | Suspension filtering wetland system |
| WO2021017367A1 (en) * | 2019-07-31 | 2021-02-04 | 华南理工大学 | Wastewater treatment device based on biological film granular sludge reactor, and method therefor |
| CN115231768A (en) * | 2022-06-22 | 2022-10-25 | 华南理工大学 | Light ceramsite expansion bed built-in activated carbon filter and method for purifying water by applying same |
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