CN203425572U

CN203425572U - Upflow double-type deep-bed rapid filtering tank

Info

Publication number: CN203425572U
Application number: CN201320509493.2U
Authority: CN
Inventors: 符福煜
Original assignee: Shanghai Odorfreen Environmental Engineering Co Ltd
Current assignee: SHANGHAI ODORFREE ENVIRONMENT ENGINEERING CO LTD
Priority date: 2013-08-20
Filing date: 2013-08-20
Publication date: 2014-02-12
Anticipated expiration: 2023-08-20

Abstract

The utility model discloses an upflow double-type deep-bed rapid filtering tank and relates to a rapid filtering tank. The filtering tank is connected with a water feeding and water distribution channel by a water inlet pipeline; water distribution cover plates are uniformly mounted at the top of the water feeding and water distribution channel of the whole filtering tank at certain intervals; a W-shaped filtering brick gas-water mixing region, a filtering layer supporting layer filler, a quartz sand filtering layer A and a quartz sand filtering layer B are arranged above the water feeding and water distribution channel in sequence; a backwashing air branch pipe is arranged inside the W-shaped filtering brick gas-water mixing region, and is connected with a backwashing air blower by an air main pipe; the air main pipe is provided with a backwashing air control valve; a backwashing water pump is connected with a water inlet pipe by a backwashing water pipe; the backwashing water pipe and the water inlet pipe are connected with the water feeding and water distribution channel; the backwashing water pipe is provided with a backwashing clean water control valve, a pressure controller and a check valve; the water inlet pipe is provided with a water inlet control valve and a water inlet lifting pump. According to the upflow double-type deep-bed rapid filtering tank, the land area is saved, the operation cost is low, the treatment effect is good and the degree of automation is high; the upflow double-type deep-bed rapid filtering tank is free from maintenance.

Description

The compound dark bed rapid filter of up-flow

Technical field

The utility model relates to a kind of rapid filter, be specifically related to the compound dark bed rapid filter of a kind of up-flow.

Background technology

Just just raise the curtain to the construction of urbanization transition in China small towns, the urbanization in small towns must be built a set of complete urbanization combined system, first must improve its functional infrastructure by the planning in city, wherein sanitary sewage disposal is a primary link of its functional construction hardware components, urban population is intensive, blowdown flow rate is concentrated greatly, Urban Water Environment health construction is that the first step of Process of Urbanization Construction is because small towns is to Development of Urbanization, soil is the most valuable narrow resources, and current most sewage disposal still adopts conventional activated sludge process mostly, efficiency is low, take up an area large, wasted the land resource of a large amount of preciousnesses, sewage disposal pretreating process falls behind, maintenance is large, take up an area large, energy consumption is high, treatment effeciency is low, therefore exploitation is efficient, save soil, the sewage disposal pretreating process of saving energy consumption has very important commercial value and strategic importance.

Utility model content

For the deficiency existing in prior art, the utility model object is to be to provide a kind of up-flow compound dark bed rapid filter, saves land area, and operating cost is low, and treatment effect is good, and automated procedures are high, non-maintaining.

To achieve these goals, the utility model is to realize by the following technical solutions: the compound dark bed rapid filter of up-flow, comprises filter tank, inlet water lifting pumps, inlet channel, water inlet control valve, water inlet distributing channel, W type filter block mixing wastewater with air district, filtering layer supporting layer filler, quartz sand filtering layer A, quartz sand filtering layer B, backwash air-blaster, backwash air supervisor, backwash air shut-off valve, backwash air arm, sewage backwash groove, sewage backwash pipe, sewage backwash control valve, filter tank evacuated tube, evacuated tube control valve, backwashing sewage water pond, sewage tank water level controller, dredge pump, water effluent trough after filter, after filter, water goes out pipe, backwash pump, backwash water pipe, backwash clear water control valve, water cistern after filter, distributing channel cover plate, pressure controller and check valve, filter tank is connected with water inlet distributing channel by inlet channel, and water distribution cover plate is evenly arranged on the water inlet distributing channel top in whole filter tank by certain interval, and distributing channel cover plate top is disposed with W type filter block mixing wastewater with air district, filtering layer supporting layer filler, quartz sand filtering layer A, quartz sand filtering layer B, W type filter block mixing wastewater with air is provided with backwash air arm in district, air arm is responsible for backwash air-blaster and is connected by air, on air supervisor, be provided with backwash air shut-off valve, backwash pump connects water inlet pipe by backwash water pipe, water inlet pipe one end is connected with water inlet distributing channel one end, filter tank, is provided with backwash clear water control valve on backwash water pipe, pressure controller and check valve, on water inlet pipe, be provided with water inlet control valve and be connected with inlet water lifting pumps, sewage backwash groove is connected with filter tank evacuated tube by blow-off pipe, on blow-off pipe, be provided with sewage backwash control valve, in the evacuated tube of filter tank, be provided with evacuated tube control valve, evacuated tube one end, filter tank is connected with the other end of water inlet distributing channel, the other end connects backwashing sewage water pond, bottom, backwashing sewage water pond is provided with dredge pump, backwashing sewage water pond sidewall is provided with sewage tank water level controller, after filter, water effluent trough is connected with water cistern after filter by outlet pipe, and cistern water outlet connects subsequent treatment structures by cistern outlet pipe

From bottom to top, media filtration hole is the descending inverted V-shaped that is totally for described filter tank bed body.

The utility model adopts up-flow water inlet, filter bed adopts the homogeneous filtering material of natural different size, whole filter bed is by the gravel by nature of 2mm-40mm different-grain diameter, quartz sand filter media, by different gradation, form 3.5 meters of above compound dark beds of 7 metafiltration layer depth, every metafiltration material adopts same particle diameter coarse granule homogeneous quartz sand, quartz sand filtering layer A and quartz sand filtering layer B form gradient filtration bed, the pore size of filter bed medium is inverted V-shaped along journey from bottom to top, in sewage uphill process, SS in water is by sieving, interception, hold back, hydrodynamic force, the physics chemical action such as diffusion and absorption are trapped within filter bed, because filter bed space is inverted V-shaped, suspension can see through filtrate top layer, through middle level, enter deep layer filtrate, increased the retaining power in filter tank, reduced water head loss by filtration, every layer of medium of filter bed adopts homogeneous filtering material, and porosity is unified, and filtration space is evenly distributed, but dwindles along with increasing of filtering layer, thereby increased the water environment capacity of filter tank depth.

The utlity model has following beneficial effect:

1. save land area: the compound dark bed rapid filter of up-flow is high-efficiency quick-filtering pond, it is the pretreating process that is exclusively used in municipal wastewater and industrial wastewater, can substitute in the market the pretreatment structures such as the preliminary sedimentation tank that adopts, efficient sedimentation tank completely, compare with preliminary sedimentation tank, take up an area in this filter tank is only 1/5 of preliminary sedimentation tank area, combine use with BAF, can save the land area of several times.

2. operating cost is low: sewage once promotes, and all gravity current biochemical treatments greatly alleviate mud load and the organic loading of follow-up biochemical treatment, save energy consumption, reduce operating cost.

3. treatment effect is good: this patent suspended substance removal effect surpasses more than 85%, go out aqueous suspension stable lower than 30mg/1, COD removal effect arrives more than 50%, the clearance of phosphorus is higher than 50%, filter efficiency surpasses all types of sedimentation basins of operation in the market, combine use with BAF, water outlet reaches China GB18918-2002 one-level A standard, even higher emission request easily.

4. automated procedures are high: filter tank automaticity is high, and backwashing procedures is completed automatically by computer control, and operational mode is single, backwash do not need to close into water promote water pump, control simple, easy to operate.

5. non-maintaining: the inner gas distributing pipeline in filter tank all adopts SS304 material, W type filter block adopts high density polyethylene (HDPE) to fill high standard concrete, machinery-free moving component, supporting layer filler and quartz sand filter media are lossless, do not run off, filter tank runs without interruption nothing obstruction throughout the year, forever non-maintaining.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, describe the utility model in detail;

Fig. 1 is structural representation of the present utility model;

Fig. 2 is work schematic diagram of the present utility model.

The specific embodiment

For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with the specific embodiment, further set forth the utility model.

With reference to Fig. 1-2, this specific embodiment by the following technical solutions: the compound dark bed rapid filter of up-flow, comprises filter tank 1, inlet water lifting pumps 2, inlet channel 3, water inlet control valve 4, water inlet distributing channel 5, W type filter block mixing wastewater with air district 6, filtering layer supporting layer filler 7, quartz sand filtering layer A8, quartz sand filtering layer B9, backwash air-blaster 10, backwash air supervisor 11, backwash air shut-off valve 12, backwash air arm 13, sewage backwash groove 14, sewage backwash pipe 15, sewage backwash control valve 16, filter tank evacuated tube 17, evacuated tube control valve 18, backwashing sewage water pond 19, sewage tank water level controller 20, dredge pump 21, water effluent trough 22 after filter, after filter, water goes out pipe 23, backwash pump 25, backwash water pipe 26, backwash clear water control valve 27, water cistern 28 after filter, distributing channel cover plate 29, pressure controller 30 and check valve 31, sewage connects water inlet distributing channel 5 by inlet water lifting pumps 2 by pipeline 3, water distribution cover plate 29 is evenly arranged on the top (as Fig. 2) of the water inlet distributing channel 5 in whole filter tank 1 by certain interval, for filter tank 1 water inlet and backwash clear water uniform water distribution, the interior installation backwash air arm 13 in W type filter block mixing wastewater with air district 6, air arm 13 is responsible for 11 by air and is connected with backwash air-blaster 10, filtering layer supporting layer filler 7 is installed by grating by the filler of 5 kinds of different-grain diameters, supporting layer filler plays and prevents that quartz sand filter media from causing staggered floor and loss when backwash, play the effect of further water distribution and meticulous gas distribution simultaneously, quartz sand filtering layer A8 and B9 are arranged by size and are formed the compound filter bed of ladder by the quartz sand of two kinds of different-grain diameters, 1, filter tank body from bottom to top, the overall descending inverted V-shaped that is of media filtration hole, backwash pump 25 is connected by backwash water pipe 26 and water inlet pipe 3 and filter tank water inlet distributing channel, by controlling backwash by-pass valve control 27 and inlet valve 4 carries out work filtration or backwash is switched, sewage backwash groove 14 is connected with filter tank evacuated tube 17 by blow-off pipe 15, by controlling sewage backwash control valve 16, is connected backwashing sewage water pond 19 with evacuated tube control valve 18, after filter, water effluent trough 22 is by the rear water cistern 28 be connected (as Fig. 2) of outlet pipe 23 and filter.

This specific embodiment sewage enters distributing channel 5 by inlet water lifting pumps by water inlet pipe 3, at the bottom of being distributed to pond, whole filter tank by distributing channel cover plate 29, sewage is again by the even mixing in W type filter block mixing wastewater with air district 6, finally by the hydraulic shear repeatedly of supporting layer filler, be distributed to very equably whole filter tank 1, sewage is by the filtration of filter bed quartz sand filtering layer A8 and B9, the particle suspensions in sewage by being blocked, a series of physics chemical action such as Blang's diffusion, hydrodynamic force and Electrostatic Absorption is trapped within the filter bed of quartz sand filtering layer A8 and B9.Along with the filter tank prolongation of 1 filtration work period, the suspension of holding back in pond can constantly increase, head in bed body damages and also can increase thereupon, when suspension is trapped certain value, backwash must be carried out in filter tank 1, the suspension that cleaning is trapped, when the loss of flood peak of filter tank filter bed reaches pressure controller 30 setting value, close inlet water lifting pumps 2 and water inlet control valve 4, open sewage backwash control valve 16, when the interior water level in filter tank 1 is down to sewage backwash groove 14 crest of weir, open backwash clear water control valve 27 and backwash air shut-off valve 12, start backwash air blast 10 and backwash clarified water pump 25, adopt powerful air and water to carry out the collaborative backwash of air water, powerful air by air be responsible for 11 and air arm 13 pass through the even mixing in W type filter block mixing wastewater with air districts 6, be distributed to whole filter tank, air water through tens minutes is combined recoil, the suspension being trapped in filter tank 1 is substantially rinsed and enters cesspool 19, at this moment close backwash air blast 10 and backwash air shut-off valve 12, with clear water, carry out rinsing number minute, until filter tank 1 is cleaned totally.When backwashing procedures finishes, close successively backwash clarified water pump 25, backwash clear water control valve 27 and sewage backwash control valve 16, open water inlet control valve 4 and inlet water lifting pumps 2, filter tank reenters the initial filtration work period, and the sewage of cesspool 19 carries out outer row by water level controller 20 control of sewage disposal pumps 21, every operation a period of time of filter tank, can, by opening evacuated tube control valve 18, to water inlet distributing channel 5, carry out desilting.After filter, outlet pipe 24 is for connecting follow-up biochemical treatment structures.

This specific embodiment is saved land area, and operating cost is low, and treatment effect is good, and automated procedures are high, non-maintaining.

More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims

1. the compound dark bed rapid filter of up-flow, is characterized in that, comprises filter tank (1), inlet water lifting pumps (2), inlet channel (3), water inlet control valve (4), water inlet distributing channel (5), W type filter block mixing wastewater with air district (6), filtering layer supporting layer filler (7), quartz sand filtering layer A (8), quartz sand filtering layer B (9), backwash air-blaster (10), backwash air supervisor (11), backwash air shut-off valve (12), backwash air arm (13), sewage backwash groove (14), sewage backwash pipe (15), sewage backwash control valve (16), filter tank evacuated tube (17), evacuated tube control valve (18), backwashing sewage water pond (19), sewage tank water level controller (20), dredge pump (21), water effluent trough (22) after filter, after filter, water goes out pipe (23), backwash pump (25), backwash water pipe (26), backwash clear water control valve (27), water cistern (28) after filter, distributing channel cover plate (29), pressure controller (30) and check valve (31), filter tank (1) is connected with water inlet distributing channel (5) by inlet channel (3), water distribution cover plate (29) is evenly arranged on water inlet distributing channel (5) top in whole filter tank (1) by certain interval, distributing channel cover plate (29) top is disposed with W type filter block mixing wastewater with air district (6), filtering layer supporting layer filler (7), quartz sand filtering layer A (8), quartz sand filtering layer B (9), in W type filter block mixing wastewater with air district (6), be provided with backwash air arm (13), air arm (13) is responsible for (11) by air and is connected with backwash air-blaster (10), on air supervisor (11), be provided with backwash air shut-off valve (12), backwash pump (25) is connected with water inlet pipe (3) by backwash water pipe (26), water inlet pipe (3) one end is connected with water inlet distributing channel (5), is provided with backwash clear water control valve (27) on backwash water pipe (26), pressure controller (30) and check valve (31), water inlet control valve (4) is connected with inlet water lifting pumps (2), sewage backwash groove (14) is connected with filter tank evacuated tube (17) by blow-off pipe (15), on blow-off pipe (15), be provided with sewage backwash control valve (16), in filter tank evacuated tube (17), be provided with evacuated tube control valve (18), blow-off pipe (15) communicates with filter tank evacuated tube (17) and is connected backwashing sewage water pond (19), bottom, backwashing sewage water pond (19) is provided with dredge pump (21), backwashing sewage water pond (19) sidewall is provided with sewage tank water level controller (20), after filter, water effluent trough (22) is connected with water cistern (28) after filter by outlet pipe (23), the rear water cistern (28) of filter goes out pipe (24) with cistern and is connected.

2. the compound dark bed rapid filter of up-flow according to claim 1, is characterized in that, from bottom to top, filter medium hole is the descending inverted V-shaped that is totally for described filter tank (1) bed body.