CN102390887B - Flap aerated biological filter and wastewater treatment method thereof - Google Patents
Flap aerated biological filter and wastewater treatment method thereof Download PDFInfo
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- CN102390887B CN102390887B CN2011103099763A CN201110309976A CN102390887B CN 102390887 B CN102390887 B CN 102390887B CN 2011103099763 A CN2011103099763 A CN 2011103099763A CN 201110309976 A CN201110309976 A CN 201110309976A CN 102390887 B CN102390887 B CN 102390887B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention relates to a flap aerated biological filter and a wastewater treatment method thereof. The flap aerated biological filter comprises a filter, water distribution pipes and gas distribution piped, wherein a water collecting channel with a rectangular section is arranged below the middle part of the bottom plate of the filter; the filter and the water collecting channel are divided into two layers by a water collecting channel partition; rows of water distribution pipes and gas distribution lateral pipes are arranged on the water collecting channel partition; a filtering material layer is paved on the water collecting partition; a flap valve is installed on one side of the filter wall; a backwashing water discharge channel is arranged outside the flap valve; a water inflow channel and an overflowing weir are arranged above the flap valve; the water distribution pipes and the gas distribution lateral pipes are buried in the filtering material layer, and are communicated with water/gas distribution combined vertical pipes; and the filter wall at one side of the water collecting channel is communicated with outflow pipes of an aeration amount control valve and a backwashing gas control valve, an after-filtration water outflow pipe and a backwashing water inflow pipe. By the flap aerated biological filter, two independent aeration and backwashing gas distribution systems of a traditional biological filter are replaced, the investment is reduced, the construction difficulty is reduced and the use utilization of equipment is improved; and the flap aerated biological filter can be widely applied to wastewater treatment process of a biological filter.
Description
Technical field
The present invention relates to a kind of sewage treatment facility.
Background technology
Traditional BAF of operation mostly is greatly the V-type filter tank structure at present, the flow direction according to sewage treatment can be divided into upward flow (UBAF) and lower to stream (DBAF), two kinds of techniques respectively have advantage, but aeration head and filter that all to exist a common defects be exactly the filter tank, air inlet pipe and backwash tracheae all are independent settings, not only increased construction investment but also increased difficulty of construction, in addition, prefabricated filter plate is adopted in the filter tank, filter plate carries out the secondary assembly unit at the bottom of the pond, flatness is wayward, cause water and air distributing even not, because traditional BAF only forms an air cushion layer filter tank in the filter plate bottom, therefore air pressure is stable not when aeration and air-water backwashing, affects aeration and backwash effect, can not guarantee work quality, affect operating efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of flap aerated biological filter and sewage water treatment method thereof, the technical problem of solve further assurance filter tank aeration, backwash quality, increasing work efficiency.
For achieving the above object, the present invention adopts following technical scheme:
A kind of flap aerated biological filter and sewage water treatment method thereof, comprise filter tank and water distribution, gas distribution pipe, described filter tank arranges the braiding channel of a rectangular cross section below the base plate middle part, be divided into filter tank and braiding channel two-layer by the braiding channel dividing plate, be furnished with by rows water distribution, gas distribution transverse tube on the braiding channel dividing plate, be covered with filter material layer at the braiding channel dividing plate; In filter tank wall one side, the position that is higher than filter material layer is equipped with flap valve, and there is the recoil drainage ditch in the flap valve outside, and the top of flap valve is provided with inlet channel and downflow weir; Described water distribution, gas distribution transverse tube are buried in filter material layer, the base plate of water distribution, gas distribution transverse tube is communicated with water distribution, the gas distribution combination vertical tube that is upward through the braiding channel dividing plate, stretch into braiding channel downwards, and a side filter tank wall of described braiding channel is with the outlet conduit of aeration control valve, backwash gas control valve and filter afterwards that outlet pipe, backwash water inlet pipe are communicated with.
The cross section of described water distribution, gas distribution transverse tube is arch door shape, its top is distributed with the residual air release aperture, its both sides waist respectively has a upper anti-blocking groove and a lower anti-blocking groove, in groove, have one and arrange qi-emitting hole under qi-emitting hole and the row, its gusset both sides, base plate center is distributed with two water holes of arranging, and the transverse tube base plate has the jack that is communicated with water distribution, gas distribution combination vertical tube at the braiding channel position;
Described water distribution, gas distribution combination vertical tube are combined by water distributor and gas distribution pipe two tubes, are fixed on the braiding channel dividing plate.In the jack on the head insertion transverse tube base plate of its combination vertical tube, wherein on water distributor top and the transverse tube base plate make even in the plane, gas distribution pipe is risen the upper qi-emitting hole in transverse tube, water distributor length below the braiding channel dividing plate of filter tank is greater than gas distribution pipe, gas distribution pipe is being provided with braiding channel air cushion layer residual air release aperture near the following place of filter tank braiding channel dividing plate, and tube wall has air admission hole in the lower end of gas distribution pipe;
Described filter tank braiding channel dividing plate is secondary pouring concrete plate, and water distribution, gas distribution combination vertical tube are fixed on this plate.
Be connected with aeration control valve and backwash gas control valve on the described air inlet pipe.
A kind of sewage water treatment method of using described flap aerated biological filter, it is characterized in that: step is as follows:
Filter operating mode: former water evenly flows into the filter tank by inlet channel and downflow weir, utilize the water Action of Gravity Field, filter material layer is passed in infiltration, the biomembrane that comes off in suspension in the former water and the filter material layer is delayed in the filter material layer, water after the filtration flows into the braiding channel of bottom, filter tank by the water distributor in water distribution, the gas distribution combination vertical tube after the water distributing pore of water distribution, gas distribution transverse tube bottom is collected, flow out by filtering rear outlet pipe;
Aeration operating mode: in drainage, compressed air is through air inlet pipe, the aeration control valve enters the braiding channel of bottom, filter tank, form at an upper portion thereof a braiding channel air cushion layer, then pass through water distribution, gas distribution pipe in the gas distribution combination vertical tube enters water distribution, the gas distribution transverse tube, at water distribution, the transverse tube air cushion layer is formed at the top of gas distribution transverse tube, then pass through water distribution, the upper qi-emitting hole of gas distribution transverse tube passes through filter material layer with the state of minute bubbles uniformly from the rising of bottom, pond, for filter tank oxidation degradation work provides enough oxygen, the turnover panel biofilter is at drainage, during the aeration operating mode, flap valve is in closed condition;
Backwash operating mode: close first inlet valve and aeration control valve, allow the former water that enters in the pond continue to filter, outlet valve after the pool inner water potential drop is closed filter during the 20cm left and right sides to the filter material layer, then by start recoil pump and the corresponding backwash gas of switch, water control valve recoiled to the filter tank by gas punching, mixing wastewater with air punching, water 3 stages of punching, after a back flushing process finishes, successively press the regular hour control program by 45 °, 90 ° different open degree, order is opened the draining flap valve, and the dirt that gathers in back-flushing and the filter tank is discharged.
The flow direction and the flow of the backwash draining in the opening angle control filter tank of described flap valve.
The aeration operating mode of described biofilter and backwash operating mode adopt same water distribution, the water distribution when the gas distribution transverse tube is finished aeration, filtration and backwash and gas distribution, and utilize aeration control valve and the gentle backwash of backwash gas control valve control filter tank aeration that is connected with on the air inlet pipe.
Compared with prior art the present invention has following characteristics and beneficial effect:
The present invention utilizes the succinct gas distribution system of a cover to replace independently system of two of traditional biological filter tank aerations, backwash distribution, save investment, reduced the construction difficulty, shortened construction period, reduced maintenance load, improved capacity utilization.
Aeration transverse tube of the present invention is installed in the bottommost in filter tank, can guarantee that any position of filter material layer can both obtain oxygen uniformly.Guarantee effect and the effluent quality of aeration system.
Form two air cushion layers when the present invention works, air pressure is constant when having guaranteed aeration and gas flushing.
The present invention does not arrange the backwash drainage ditch, aeration head and pipeline need be installed in the filter material layer, thereby construction area that can the maximum using filter tank is processed former water.
The present invention has adopted advanced backwash technique, the turnover panel biofilter when backwash other type filter tank, pond different from the past to the using method of backwashing water, rush at gas, the mixing wastewater with air punching, flap valve cuts out all the time in water punching 3 stages, strengthen the collision of filtrate and the cleaning strength of back-flushing by improving backwashing strength, not only improve the backwash efficiency in filter tank but also avoided the loss of filtrate, make simultaneously back-flushing obtain recycling, reduced the consumption of back-flushing, in addition, draining initial stage flap valve is only opened 45 °, so accumulating in the suspension on the back-flushing top in the filter tank can discharge rapidly, and the filtrate in the pond is because than great, sinking speed is fast, can not run off.
The present invention can be widely used in the biological filter technique for treating sewage.
Description of drawings
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is structural representation of the present invention.
Fig. 2 is that the structure master of water distribution of the present invention, gas distribution transverse tube looks schematic diagram.
Fig. 3 is the structure schematic side view of water distribution of the present invention, gas distribution transverse tube.
Fig. 4 is the structure elevational schematic view of water distribution of the present invention, gas distribution transverse tube.
Fig. 5 is the scheme of installation of water distribution of the present invention, gas distribution transverse tube.
Fig. 6 is the structural representation of water distributor of the present invention.
Fig. 7 is the structure schematic side view of water distributor of the present invention.
Fig. 8 is the structural representation of water distribution of the present invention, gas distribution vertical tube.
Fig. 9 is the structure schematic side view of water distribution of the present invention, gas distribution vertical tube.
Figure 10 is the work schematic diagram of filtration of the present invention, aeration.
Figure 11 is the work schematic diagram of backwash of the present invention.
Reference numeral: 1-backwash water inlet pipe, the 2-air inlet pipe, outlet pipe after the 3-filter, the 4-water distribution, gas distribution combination vertical tube, 4.1-gas distribution pipe, 4.2-braiding channel residual air release aperture, 4.3-gas distribution pipe air admission hole, 4.4-water distributor, 4.5-water distributor groove, the 5-water distribution, the gas distribution transverse tube, 5.1-base plate center gusset, 5.2-residual air release aperture, 5.3-upper qi-emitting hole, 5.4-lower qi-emitting hole, 5.5-base plate evagination gusset, 5.6-water distributing pore, 5.7-upper anti-blocking groove, 5.8-lower anti-blocking groove, 5.9-jack, the 6-filter material layer, the 7-flap valve, 8-inlet channel and downflow weir, the 9-drainage ditch that recoils, 10-braiding channel air cushion layer, 11-transverse tube air cushion layer, 12-aeration bubble, 13-filter tank braiding channel dividing plate, 14-aeration control valve, the 15-braiding channel, 16-backwash gas control valve, the 17-fixation clip, the 18-set bolt, 19-stabilising rubber pad, 20-backwash bubble.
The specific embodiment
Embodiment is referring to shown in Figure 1, a kind of flap aerated biological filter, comprise filter tank and water distribution, gas distribution pipe, it is characterized in that: described filter tank arranges the braiding channel 15 of a rectangular cross section below the base plate middle part, be divided into filter tank and braiding channel two-layer by braiding channel dividing plate 13, be furnished with by rows water distribution, gas distribution transverse tube 5 on the braiding channel dividing plate 13, be covered with filter material layer 6 at braiding channel dividing plate 13; In filter tank wall one side, the position that is higher than filter material layer is equipped with flap valve 7, and there is recoil drainage ditch 9 in the flap valve outside, and the top of flap valve is provided with inlet channel and downflow weir 8; Described water distribution, gas distribution transverse tube are buried in filter material layer, the base plate of water distribution, gas distribution transverse tube 5 is communicated with water distribution, the gas distribution combination vertical tube 4 that is upward through braiding channel dividing plate 13, stretch into braiding channel downwards, the escape pipe of described braiding channel one side and backwash water inlet pipe 1 and aeration control valve 14, backwash gas control valve 16 and filter afterwards that outlet pipe 3, backwash water inlet pipe 1 are communicated with.
Referring to Fig. 2, Fig. 3, shown in, the cross section of described water distribution, gas distribution transverse tube 5 is arch door shape, its top is distributed with residual air release aperture 5.2, its both sides waist respectively has a upper anti-blocking groove 5.7 and a lower anti-blocking groove 5.8, in groove, have one and arrange qi-emitting hole 5.4 under qi-emitting hole 5.3 and the row, its gusset 5.1 both sides, base plate center are distributed with two water holes 5.6 of arranging, and there are two evagination gussets 5.5 in the outside of base plate, are used for fixed installation; The transverse tube base plate has the jack that is communicated with water distribution, gas distribution combination vertical tube 4 at the braiding channel position;
Referring to shown in Figure 4, the installation method of transverse tube is simple, after the filter tank base plate installs set bolt 18, and stabilising rubber pad 19 on the pad of transverse tube bottom, push down the evagination gusset 5.5 in the outside of chimney filter base plate with metal fixation clip 17, the nut of the bolt that is locked gets final product.Transverse tube base plate center gusset 5.1 and stabilising rubber pad 19 can guarantee that base plate lower plane and filter tank base plate leave the normal operation that certain interval guarantees the transverse tube water distributing pore.
Referring to Fig. 5, shown in Figure 6, water distribution, gas distribution combination vertical tube 4 adopt thin-wall stainless steel tubing to make, the manufacture craft more complicated, at first, the length that is combined with each other according to gas distribution pipe and water distributor needs and the external diameter of gas distribution pipe are made a cover compacting tool set, water distributor is extruded one section and gas distribution pipe external diameter, water distributor groove 4.5 that recombination length is consistent, the gas distribution pipe of holding residual air release aperture and air admission hole successfully is placed in the water distributor groove 4.5, then make its formation multiple tube by argon arc welding.
Referring to Fig. 7, shown in Figure 8, described water distribution, gas distribution combination vertical tube 4, combined by water distributor 4.4 and gas distribution pipe 4.1 two tubes, be fixed on the braiding channel dividing plate 13, water distribution, the head of gas distribution combination vertical tube 4 inserts in the jack 5.9 of transverse tube base plate, wherein on the base plate of the pipe of water distributor 4.4 top and transverse tube make even in the plane, the pipe of gas distribution pipe 4.1 is risen the upper qi-emitting hole 5.3 in transverse tube, water distributor 4.4 length of filter tank braiding channel dividing plate below 13 are greater than gas distribution pipe 4.1, gas distribution pipe 4.1 is being provided with braiding channel air cushion layer residual air release aperture 4.2 near filter tank braiding channel dividing plate 13 following places, tube wall has air admission hole 4.3 in the lower end of gas distribution pipe 4.1, operates in aeration according to the filter tank, the thickness adjusting air inflow quantity of the formed air cushion layer of tolerance size that needs during the gas backwash.
Described transverse tube and standpipe connection position fit clearance are less than the leakage of 1 millimeter water when avoiding causing backwash.
Described filter tank braiding channel dividing plate 13 is secondary pouring concrete plate, and water distribution, gas distribution combination vertical tube 4 are fixed on this plate.
Be connected with aeration control valve 14 and backwash gas control valve 16 on the described air inlet pipe 2.
A kind of sewage water treatment method of using described flap aerated biological filter, referring to Fig. 6, shown in Figure 7, step is as follows:
Filtration, aeration operating mode:
Filter operating mode: former water evenly flows into the filter tank by inlet channel and downflow weir 8, utilize the water Action of Gravity Field, filter material layer 6 is passed in infiltration, the biomembrane that comes off in suspension in the former water and the filter material layer is delayed in the filter material layer, water after the filtration flows into the braiding channel 15 of bottom, filter tank by the water distributor in water distribution, the gas distribution combination vertical tube 4 after the water hole of water distribution, gas distribution transverse tube 5 bottoms is collected, flow out by filtering rear outlet pipe 3;
Aeration operating mode: in drainage, compressed air is through air inlet pipe 2, aeration control valve 14 enters the braiding channel of bottom, filter tank, form at an upper portion thereof a braiding channel air cushion layer 10, then pass through water distribution, gas distribution pipe in the gas distribution combination vertical tube 4 enters water distribution, gas distribution transverse tube 5, at water distribution, transverse tube air cushion layer 11 is formed at the top of gas distribution transverse tube, then pass through water distribution, gas distribution transverse tube 5.3, form aeration bubble 12 and pass through uniformly filter material layer from the rising of bottom, pond, for filter tank oxidation degradation work provides enough oxygen, the turnover panel biofilter is at drainage, during the aeration operating mode, flap valve 7 is in closed condition;
The backwash operating mode:
Close first water inlet pipe valve and aeration control valve, allow the former water that enters in the pond continue to filter, outlet valve after the pool inner water potential drop is closed filter during the 20cm left and right sides to the filter material layer, then by start recoil pump and the corresponding backwash gas of switch, water control valve recoiled to the filter tank by gas punching, mixing wastewater with air punching, water 3 stages of punching, after a back flushing process finishes, successively press the regular hour control program by 45 °, 90 ° different open degree respectively, order is opened the draining flap valve, and the dirt that gathers in back-flushing and the filter tank is discharged.Below be the flow process of three phases:
The gas flushing stage: compressed air is through air inlet pipe 2, backwash gas control valve 16 enters the braiding channel 15 of bottom, filter tank, and at braiding channel top formation braiding channel air cushion layer 10, after air admission hole 4.3 by gas distribution pipe 4.1 bottoms of combination in the vertical tube 4 after air cushion layer reaches certain thickness enters gas distribution pipe, enter water distribution, gas distribution transverse tube 5, and at water distribution, transverse tube air cushion layer 11 is formed at the top of gas distribution transverse tube, then pass through water distribution, upper qi-emitting hole 5.3 on the gas distribution transverse tube and lower qi-emitting hole 5.4 form backwash bubble 20 and rise from the bottom, pond uniformly by filter material layer to reach the purpose of gas flushing filtrate.Need to prove that at this because the 3-4 that the tolerance during filter back washing is about aeration rate doubly, so thick many of the air cushion layer that the braiding channel air cushion layer 10 that forms and transverse tube air cushion layer 11 form during all than aeration, the bubbles volume of formation is also much bigger;
Gas, water mix rinse stage: the gentle rinse stage of the working condition of backwash gas is identical, at this moment, backwashing water enters braiding channel 15 through backwash water inlet pipe 1, under Water Pressure, pass through the water distributor 4.4 of combination vertical tube, enter water distribution, gas distribution transverse tube 5, flow out by the water distributing pore 5.6 on the transverse tube base plate, evenly pass 6 pairs of filtrates of filter material layer and clean;
The water rinse stage: the backwash gas control valve is closed, the residual air of braiding channel top air cushion layer and transverse tube internal memory can discharge by the braiding channel residual air release aperture 4.2 on the vertical tube and the residual air release aperture 5.2 on transverse tube top, to avoid in braiding channel, vertical tube and transverse tube, forming vapour lock and pulse, at this moment, to all be full of water in braiding channel and vertical tube, the transverse tube, upper qi-emitting hole 5.3, lower qi-emitting hole 5.4 and residual air release aperture 5.2 during the water flushing on the transverse tube also has a small amount of backwashing water and flows out, because its aperture is very little, discharge is also very little.
The flow direction and the flow of the backwash draining in the opening angle control filter tank of described flap valve 7.
The aeration operating mode of described biofilter and backwash operating mode adopt same water distribution, the water distribution when gas distribution transverse tube 5 is finished aeration, filtration and backwash and gas distribution, and utilize aeration control valve 14 and the gentle backwash of backwash gas control valve 16 control filter tank aerations that is connected with on the air inlet pipe 2.
Claims (4)
1. flap aerated biological filter, comprise filter tank and water distribution, gas distribution pipe, it is characterized in that: described filter tank arranges the braiding channel (15) of a rectangular cross section below the base plate middle part, be divided into filter tank and braiding channel two-layer by braiding channel dividing plate (13), be furnished with by rows water distribution, gas distribution transverse tube (5) on the braiding channel dividing plate (13), be covered with filter material layer (6) at braiding channel dividing plate (13); In filter tank wall one side, the position that is higher than filter material layer is equipped with flap valve (7), and the flap valve outside has recoil drainage ditch (9), the top of flap valve to be provided with inlet channel and downflow weir (8); Described water distribution, gas distribution transverse tube (5) are buried in filter material layer, the base plate of water distribution, gas distribution transverse tube (5) is communicated with water distribution, the gas distribution combination vertical tube (4) that is upward through braiding channel dividing plate (13), stretch into braiding channel (15) downwards, and a side filter tank wall of described braiding channel (15) is with the escape pipe of aeration control valve (14), backwash gas control valve (16) and filter afterwards that outlet pipe (3), backwash water inlet pipe (1) are communicated with;
The cross section of described water distribution, gas distribution transverse tube (5) is arch door shape, its top is distributed with residual air release aperture (5.2), its both sides waist respectively has a upper anti-blocking groove (5.7) and a lower anti-blocking groove (5.8), in groove, have one and arrange qi-emitting hole (5.4) under qi-emitting hole (5.3) and the row, base plate center gusset (5.1) both sides are distributed with two water holes (5.6) of arranging, the transverse tube plate outer side has two evagination gussets (5.5), and the transverse tube base plate has the jack (5.9) that is communicated with water distribution, gas distribution combination vertical tube (4) at the braiding channel position;
Described water distribution, gas distribution combination vertical tube (4), combined by water distributor (4.4) and gas distribution pipe (4.1) two tubes, be fixed on the braiding channel dividing plate (13), the head of combination vertical tube (4) inserts in the jack (5.9) of transverse tube base plate, wherein on the base plate of the pipe of water distributor (4.4) top and transverse tube make even in the plane, gas distribution pipe (4.1) is risen the upper qi-emitting hole (5.3) in transverse tube, water distributor (4.4) length below the filter tank braiding channel dividing plate (13) is greater than gas distribution pipe (4.1), gas distribution pipe (4.1) is being provided with braiding channel air cushion layer residual air release aperture (4.2) near the following place of filter tank braiding channel dividing plate (13), has air admission hole (4.3) at the lower end tube wall of gas distribution pipe (4.1);
Described filter tank braiding channel dividing plate (13) is secondary pouring concrete plate, and water distribution, gas distribution combination vertical tube (4) are fixed on this plate;
Be connected with aeration control valve (14) and backwash gas control valve (16) on the air inlet pipe (2).
2. an application rights requires the sewage water treatment method of 1 described flap aerated biological filter, it is characterized in that step is as follows:
Filtration, aeration operating mode:
Filter operating mode:
Former water evenly flows into the filter tank by inlet channel and downflow weir (8), utilize the water Action of Gravity Field, filter material layer (6) is passed in infiltration, the biomembrane that comes off in suspension in the former water and the filter material layer is delayed in the filter material layer, water after the filtration flows into the braiding channel (15) of bottom, filter tank by the water distributor in water distribution, the gas distribution combination vertical tube (4) after the water distributing pore of water distribution, gas distribution transverse tube (5) bottom is collected, flow out by filtering rear outlet pipe (3);
Aeration operating mode: in drainage, compressed air is through air inlet pipe (2), aeration control valve (14) enters the braiding channel (15) of bottom, filter tank, and at braiding channel top formation braiding channel air cushion layer (10), after air admission hole (4.3) by gas distribution pipe (4.1) bottom in combination vertical tube (4) after air cushion layer reaches certain thickness enters gas distribution pipe, enter water distribution, gas distribution transverse tube (5), and at water distribution, transverse tube air cushion layer (11) is formed at the top of gas distribution transverse tube, then pass through water distribution, the upper qi-emitting hole (5.3) of gas distribution transverse tube, form aeration bubble (12) and pass through uniformly filter material layer from the rising of bottom, pond, for filter tank oxidation degradation work provides enough oxygen, the turnover panel biofilter is at drainage, during the aeration operating mode, flap valve (7) is in closed condition;
The backwash operating mode:
Close first water inlet pipe valve and aeration control valve, allow the former water that enters in the pond continue to filter, outlet valve after the pool inner water potential drop is closed filter during 20cm to the filter material layer, then by starting recoil pump and the corresponding backwash gas of switch, water control valve is pressed the gas punching, the mixing wastewater with air punching, water 3 stages of punching are carried out backwash to the filter tank, after a back flushing process finishes, successively respectively by 45 °, 90 ° different open degree are by the regular hour control program, order is opened the draining flap valve, the dirt that gathers in back-flushing and the filter tank is discharged, and below is the flow process of three phases:
The gas flushing stage: compressed air is through air inlet pipe (2), backwash gas control valve (16) enters the braiding channel (15) of bottom, filter tank, and at braiding channel top formation braiding channel air cushion layer (10), after air admission hole (4.3) by gas distribution pipe (4.1) bottom in combination vertical tube (4) after air cushion layer reaches certain thickness enters gas distribution pipe, enter water distribution, gas distribution transverse tube (5), and at water distribution, transverse tube air cushion layer (11) is formed at the top of gas distribution transverse tube, then pass through water distribution, upper qi-emitting hole (5.3) on the gas distribution transverse tube and lower qi-emitting hole (5.4), forming backwash bubble (20) rises from the bottom, pond uniformly by filter material layer to reach the purpose of gas flushing filtrate, need to prove at this, because the tolerance during filter back washing is 3-4 times of aeration rate, so thick many of the air cushion layer that the braiding channel air cushion layer (10) that forms and transverse tube air cushion layer (11) form during all than aeration, the bubbles volume of formation is also much bigger;
Gas, water mix rinse stage: the gentle rinse stage of the working condition of backwash gas is identical, at this moment, backwashing water enters braiding channel (15) through backwash water inlet pipe (1), under Water Pressure, pass through the water distributor (4.4) of combination vertical tube, enter water distribution, gas distribution transverse tube (5), flow out by the water distributing pore on the transverse tube base plate (5.6), evenly pass filter material layer (6) filtrate is cleaned;
The water rinse stage: the backwash gas control valve is closed, the residual air of braiding channel top air cushion layer and transverse tube internal memory can discharge by the residual air release aperture (5.2) on the braiding channel residual air release aperture (4.2) on the vertical tube and transverse tube top, to avoid in braiding channel, vertical tube and transverse tube, forming vapour lock and pulse, at this moment, to all be full of water in braiding channel and vertical tube, the transverse tube, upper qi-emitting hole (5.3), lower qi-emitting hole (5.4) and residual air release aperture (5.2) during the water flushing on the transverse tube also has a small amount of backwashing water and flows out, because its aperture is very little, discharge is also very little.
3. sewage water treatment method according to claim 2 is characterized in that: the backwash draining in the opening angle control filter tank of described flap valve (7).
4. sewage water treatment method according to claim 2, it is characterized in that: the aeration operating mode of described biofilter and backwash operating mode adopt same water distribution, water distribution and gas distribution when gas distribution transverse tube (5) is finished aeration, filtration and backwash, and utilize aeration control valve (14) and the gentle backwash of backwash gas control valve (16) control filter tank aeration that is connected with on the air inlet pipe (2).
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| CN2011103099763A CN102390887B (en) | 2011-10-13 | 2011-10-13 | Flap aerated biological filter and wastewater treatment method thereof |
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| CN2011103099763A CN102390887B (en) | 2011-10-13 | 2011-10-13 | Flap aerated biological filter and wastewater treatment method thereof |
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| CN106745756A (en) * | 2017-03-28 | 2017-05-31 | 天津大学 | It is a kind of to be aerated the integral system and its application method intake into medicine backwash |
| CN110204149B (en) * | 2019-06-26 | 2023-12-05 | 惠州市铭博实业发展有限公司 | Water and gas distribution aeration multifunctional filter tube, multifunctional filter tube filter tank and water treatment method |
| CN110563125B (en) * | 2019-09-23 | 2022-09-13 | 浙江联池水务设备股份有限公司 | Sewage treatment equipment |
| CN110589961B (en) * | 2019-09-23 | 2022-08-12 | 浙江联池水务设备股份有限公司 | Biological contact oxidation filter |
| CN110606544A (en) * | 2019-09-25 | 2019-12-24 | 浙江联池水务设备股份有限公司 | Biological aerated filter with small floor area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1660466A (en) * | 2005-01-14 | 2005-08-31 | 珠海市沃特金水处理技术有限公司 | Flap valve and flap filter tank |
| CN1683052A (en) * | 2005-02-19 | 2005-10-19 | 杜加富 | Tilting plate type filtering pool |
| CN202415239U (en) * | 2011-10-13 | 2012-09-05 | 惠州市铭博实业发展有限公司 | Flap aeration biofilter |
-
2011
- 2011-10-13 CN CN2011103099763A patent/CN102390887B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1660466A (en) * | 2005-01-14 | 2005-08-31 | 珠海市沃特金水处理技术有限公司 | Flap valve and flap filter tank |
| CN1683052A (en) * | 2005-02-19 | 2005-10-19 | 杜加富 | Tilting plate type filtering pool |
| CN202415239U (en) * | 2011-10-13 | 2012-09-05 | 惠州市铭博实业发展有限公司 | Flap aeration biofilter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102390887A (en) | 2012-03-28 |
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