CN202576091U

CN202576091U - Integral baffling biological filtering pond sewage treatment device

Info

Publication number: CN202576091U
Application number: CN 201220216716
Authority: CN
Inventors: 钟志长
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2012-12-05
Anticipated expiration: 2022-05-15

Abstract

The utility model relates to an integral baffling biological filtering pond sewage treatment device, which consists of an outer wall and an inner wall, wherein the cross sections of the outer wall and the inner wall are two concentric circles; the vertical section of the outer wall is dual-U-shaped; and a baffling anaerobic zone (16), an aerobic zone (17), a settling zone (20), a biological filtering pond zone (18) of the baffling anaerobic zone (16), a backwashing water outlet pipe (11), a siphon pipe (13), a siphon destroying pipe (14), and a secondary water distribution zone (19) are arranged between the outer wall and the inner wall. The integral baffling biological filtering pond sewage treatment device has the advantages that the occupied area is small, the investment is small, the device is convenient to install, the impact resistance is strong, the water is stably let out, the operating expenses are low, the automation level is high, the device is simple and convenient to operate, the nitrogen and phosphorus removal effect is good, and the device can be used for the treatment of sewage such as domestic sewage, hospital wastewater and similar sewage, and can also be used for the treatment of high-concentration industrial wastewater.

Description

Integrated baffling biological filter waste disposal plant

Technical field:

The utility model is applicable to be handled sewage and hospital sewage and other similar sewage of low concentration, also is applicable to and can be used for COD by high-concentration industrial sewage _Cr, N, P removal.Relate to the device of baffling type anaerobic and BAF integrated technique.

Background technology:

In recent years the Environmental Protection in China technology has very big development, technological varied in WWT.The baffling type anaerobic technology has obtained using widely in the biochemical treatment; Baffling type anaerobic can make the sewage thorough mixing and keep quite high living weight; Avoid the short flow phenomenon in traditional anaerobism water distribution simultaneously, raise the efficiency, thereby make the volume reducing of biochemical reaction container.The BAF technical application makes sewage that aerobic and Anaerobic processes alternately take place between filler in WWT; Help the removal of nitrogen phosphorus; Play filtering effect again simultaneously, gone out low, the water conditioning of water suspension; Other biochemical processing methods do not need to design secondary sedimentation basins separately relatively, have reduced floor space and civil works.

The COD of a simple deflector anaerobic reactor water outlet _CrConcentration has satisfied not the requirement of present environment protection emission; On the function of removing nitrogen phosphorus, the treatment effect of deflector anaerobic reactor is not clear.Though existing BAF water outlet effect is good, quite high to the requirement of water inlet, can only adapt to lower concentration COD _CrWith the sewage of low suspended substance, back flushing is mostly adopted big flow water pump and blower fan to unite to carry out, and it is bigger to consume energy consumption, and processing cost is higher.

Summary of the invention:

The utility model is the integrated technique that combines baffling type anaerobic reactor drum, BAF; Solved the deficiency of above-mentioned two kinds of biochemical technologies, thereby made floor space little, the electromechanical equipment of use is few; Operation is simplified; Energy consumption reduces, and treatment effect is obvious, and investment and use cost reduce.Change through reactor parameter can be applied to sewage and similar type sewage and the high, normal, basic COD of industrial sewage _Cr, N, P removal.

The utility model is made up of gas distribution pipe, water inlet pipe, rising pipe, outer wall, inwall, filler 1, filler 2, water distributor, flow deflector, sludge pipe, back flushing rising pipe, siphon pond, U trap, siphon destructing tube.Composition characteristic is: be made up of two concentrically ringed outer walls and inwall; The form of outer wall is double-U-shaped; Deflector anaerobic district (16) and aerobic zone (17) are arranged between outer wall and the inwall; The bottom of integratedization baffling biological filter is negative area (20); Top, deflector anaerobic district (16) has filler 1 (5) and traverse baffle is arranged in water inlet pipe (2), deflector anaerobic district (16), filler 1 (5) is arranged in the aerobic zone (17); There is biological filter district (18) inwall inboard, integratedization baffling biological filter, and lower section, biological filter district (18) is that back flushing rising pipe (11) is arranged at filler 2 (6), biological filter district (18) bottom, and U trap (13) and siphon destructing tube (14) are arranged on the back flushing rising pipe (11); The outside of back flushing rising pipe (11) outlet is siphon pond (7); The top in biological filter district (18) is clear water zone (15), and rising pipe (3) is arranged at clear water zone (15) top, and the top of negative area (20) has the bottom of secondary water distributing area (19), negative area (20) that sludge pipe (12) is arranged.The flow velocity that sewage in this zone of polylith traverse baffle control is arranged in the deflector anaerobic district (16).U trap (13) is positioned at the top in deflector anaerobic district; The following 200 millimeters places of design water level that one end of U trap (13) gos deep into deflector anaerobic district (16) are inverted U and are connected with the back flushing rising pipe, and siphon destructing tube (14) one ends go deep into the following 1000 millimeters places of clear water zone (15) design water level.Secondary water distributing area (19) is made up of flow deflector (10) and water distributor (9), the outlet of water distributor (9) one termination aerobic zones (17), and the other end is arranged circlewise in secondary water distributing area (19) and is had water distributing pore according to flow in the pipe.

Description of drawings:

The integrated baffling of Fig. 1 biological filter waste disposal plant synoptic diagram;

1, gas distribution pipe, 2, water inlet pipe, 3, rising pipe, 4, outer wall, 5, filler 1; 6,

filler

2,7, siphon pond, 8, inwall, 9, water distributor, 10, flow deflector; 11, back flushing rising pipe, 12, sludge pipe, 13, U trap, 14, siphon destructing tube, 15, clear water zone; 16, deflector anaerobic district, 17, aerobic zone, 18, the biological filter district, 19, the secondary water distributing area, 20, settling bowl

Embodiment:

Followingly specify operation scheme according to accompanying drawing

Case study on implementation: the sewage through pre-treatment gets into deflector anaerobic district (16) by water pump lifting to water-in (2), according to water inlet COD _CrConcentration is different, and through the residence time and the flow velocity that changes this part of contaminated water, acidifying and one section or all processes producing in the methane process are hydrolyzed in the presence of anaerobion; Sewage after the anaerobism uses external blower oxygen to be provided, the organic cod in the sewage from flowing into aerobic zone (17) _CrMajor part is resolved into carbonic acid gas and water by microbiological oxidation in this zone; The effusive mud mixture of aerobic zone (17) through secondary water distributing area (19) evenly from around flow into negative area (20); In negative area (20), carry out mud-water separation; The upper strata clear water gets into biological filter district (18), and mud is recycled to deflector anaerobic district (16) by sludge pipe (12) or discharges; Sewage carries out advanced treatment, COD in biological filter district (18) _Cr, N, P, suspended substance concentration be superior to present environment protection emission requirement after handling through this zone, gas distribution pipe (2) is delivered to the even air of extraneous gas blower in the sewage through the aerator under biological filter district (18) and for mikrobe oxygen is provided; Rising pipe (3) in the clear water zone (15) is collected the clear water that produces and is discharged.When filler in biological filter district (18) 2 stops up; The water level in deflector anaerobic district (16) is raised; When deflector anaerobic district (16) water exceeded U trap (13) horizontal section, U trap (13) begins draining outward made backwashing water rising pipe (11) produce certain negative pressure, and the clear water in the clear water zone (15) is discharged through back flushing rising pipe (11); Mud on the filler is also followed clear water and is got rid of together; When clear water zone (15) water level drop to siphon destructing tube (14) when following back flushing rising pipe (11) get into air, siphonage destroys, back flushing rising pipe (11) stops draining outward.

The characteristics in deflector anaerobic district are: built-in vertical flow deflector; Reaction zone is separated into placed in-line several reaction; Each reaction chamber all is a relatively independent upflow sludge blanket (USB) system, and mud wherein can be to exist with granulate form or with cotton-shaped form.Current by flow deflector guiding up and down baffling advance, one by one through the mud bed in the reaction chamber, the substrate in the water inlet fully contacts with mikrobe and is able to the degraded removal.

Though can be regarded as the simple series connection of a plurality of UASB reactor drums in textural deflector anaerobic district, have significantly different with single UASB on the technology.UASB can regard a kind of complete mixing reactor approx as, and the deflector anaerobic district then more approaches pulling flow type technology.At first, shutter configuration forms the several separate reaction chamber in reactor drum, in each reaction chamber, inoculates and cultures out the microflora that the envrionment conditions with this place adapts.Secondly, compare with traditional aerobic process, a weak point of anaerobic reactor is that system's effluent quality is relatively poor, and needing usually could qualified discharge through subsequent disposal.And the pulling flow type characteristic in deflector anaerobic district can guarantee that system has more excellent effluent quality, and the operation of reactor drum simultaneously is also more stable, and the toxic substance in impact load and the water inlet has better buffering adaptive faculty.

BAF is a kind of novel dirty water living creature processing technique that grows up the America and Europe at first late nineteen eighties, the early 1990s.

BAF is by trickling filter development, belongs to the biomembrance process category, is used as tertiary treatment at first, after develop into and directly be used for second-stage treatment.Process synthesis multiple Water purifications such as filtration, absorption and biological metabolism, make that it has that volume is little, small accommodation area, processing efficiency is high, effluent quality is good, flow process is simple, convenient operation and management also can be saved advantages such as second pond.BAF has following characteristics:

1, the principal feature of BAF is to adopt the less granulated material of particle diameter as filler, and filler is immersed in the water, utilizes the oxygen supply of gas blower aeration.Packing layer plays two aspect effects, and the one, as microorganism carrier, compare with general biological filter; Owing to have bigger specific surface area, the time of sewage and microbial film actual contact is long, can make biochemical reaction carry out more thoroughly; The 2nd, can be used as filtration medium; Hold back suspended solids and the new biosolids that forms in the water into, thereby save the secondary sedimentation basins in the other biological facture, obtain the high-quality water outlet;

2, many floras of different nature of in giving birth to aeration thing filter tank, can growing.In the filtering layer nearer apart from feed-water end, the organic content in the sewage is higher, and various heterotrophic bacteriums are preponderated, and mainly is to remove BOD; In the packing layer nearer apart from water outlet, the organic content in the sewage is very low, and the nitrifier of autotrophic type will be preponderated, and can carry out the nitration reaction of ammonia nitrogen.Nitrifier is present in the microbial film inboard, and very strong sticking power is arranged on filler, in case form, is difficult for coming off fully, so BAF has the ability of very strong nitrated removal ammonia nitrogen.

3, adopt the parallel upper reaches of air water, make air water carry out fabulous dividing equally, prevented the bubble gentle stifled phenomenon of in packing layer, condensing, and packing layer prolongs the residence time of bubble in packing layer to the cutting action of bubble, make the utilization ratio of oxygen high, energy consumption is low;

4, upward flow has formed the beneficial attached column of technology has been pushed away condition, even adopt high filtering speed and load, still can guarantee the lasting stability property and the validity of biological filtering tank process.

5, adopt the parallel upward flow of air water, spatial filtering can better be used, air can be brought solid matter into the filter bed depths, in the filter tank, can keep the uniform solid matter of high loading, thereby prolong backwashing period, water, gas consumption when having reduced cleaning.

Claims

1. integrated baffling biological filter waste disposal plant; Form by gas distribution pipe, water inlet pipe, rising pipe, outer wall, inwall, filler 1, filler 2, water distributor, flow deflector, sludge pipe, back flushing rising pipe, siphon pond, U trap, siphon destructing tube; It is characterized in that: integrated baffling biological filter is by two concentrically ringed outer walls and inwall is formed, the form of outer wall is double-U-shaped; Deflector anaerobic district (16) and aerobic zone (17) are arranged between outer wall and the inwall; The bottom of integratedization baffling biological filter is negative area (20); Top, deflector anaerobic district (16) has filler 1 (5) and traverse baffle is arranged in water inlet pipe (2), the deflector anaerobic district; Filler 1 (5) is arranged in the aerobic zone; It is that filler 2 (6), biological filter district bottom has U trap (13) and siphon destructing tube (14) are arranged on back flushing rising pipe (11), the back flushing rising pipe (11) that there are biological filter district (18), bottom, biological filter district (18) in inwall inboard, integratedization baffling biological filter; The outside of back flushing rising pipe (11) outlet is that the top of siphon pond (7), biological filter district (18) is clear water zone (15), and rising pipe (3) is arranged at clear water zone (15) top, and the top of negative area (20) has the bottom of secondary water distributing area (19), negative area (20) that sludge pipe (12) is arranged.

2. according to right 1 described integrated baffling biological filter waste disposal plant, it is characterized in that: the flow velocity that sewage in this zone of polylith traverse baffle control is arranged in deflector anaerobic district (16).

3. according to right 1 described integrated baffling biological filter waste disposal plant; It is characterized in that: U trap (13) is positioned at the top in deflector anaerobic district; One end of U trap (13) gos deep into being inverted U under the design water level in deflector anaerobic district and is connected with the back flushing rising pipe, and siphon destructing tube (14) one ends go deep into the following 1000 millimeters places of clear water zone (15) design water level.

4. according to right 1 described integrated baffling biological filter waste disposal plant; It is characterized in that: secondary water distributing area (19) is made up of flow deflector (10) and water distributor (9), and the outlet of water distributor (9) one termination aerobic zones (17), the other end are arranged circlewise in secondary water distributing area (19) and had water distributing pore according to flow in the pipe.