CN201427890Y - Biological aerated filter for sewage purification - Google Patents
Biological aerated filter for sewage purification Download PDFInfo
- Publication number
- CN201427890Y CN201427890Y CN2009201518258U CN200920151825U CN201427890Y CN 201427890 Y CN201427890 Y CN 201427890Y CN 2009201518258 U CN2009201518258 U CN 2009201518258U CN 200920151825 U CN200920151825 U CN 200920151825U CN 201427890 Y CN201427890 Y CN 201427890Y
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- Prior art keywords
- filter
- water
- biological aerated
- module
- pond
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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
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- Biological Treatment Of Waste Water (AREA)
Abstract
A biological aerated filter for sewage purification consists of a plurality of biological aerated filter units, and each biological aerated filter unit mainly structurally comprises a biological aerated filter, a filter module, a raw water intake and back flush module and a process gas module. The bottom of the biological aerated filter is equipped with the raw water intake and back flush module,and the process gas module is arranged above the raw water intake and back flush module. The process gas module comprises a gas supply system and (a filter water flushing system), wherein the gas supply system comprises a process gas fan, a gas supply pipe, gas supply branched pipes and air diffusers, the process gas fan is connected with the gas supply pipe, the gas supply pipe penetrates througha water tank wall and then is divided into the pluralities of gas supply branched pipes on a filter plate on the bottom portion of a water tank, and the air diffusers are mounted on the gas supply branched pipes, (the distribution density of the air diffusers is 25 or 50 air diffusers per square meter. The filter module comprises a graded gravel layer, a filter plate and filter heads, the filterplate is arranged under the process gas module, the filter heads are arranged inside the filter plate, and the graded gravel layer which is arranged above the filter plate is filled with biological filter materials.
Description
Affiliated technical field
The utility model relates to a kind of Sewage treatment systems, especially a kind of BAF.
Background technology
At present the treatment technology of sewage work mainly comprises physical treatment process, method of chemical treatment, and these two kinds of methods exist the energy consumption height, there are problems such as limitation in the processing of organic sewage.Biological treatment is the metabolism by microorganism, makes the organic pollutant that is solution, colloid and fine suspended state in the waste water, is converted into the waste water treatment process of stable, harmless material.This method energy consumption is lower, and is more effective to the processing of organic waste water.Biomembrance process is to use more method in the biological treatment, and the treatment facility that belongs to biomembrance process has the biological fluidized bed that biological filter, blodisc, biological contact oxidation pond and latest developments get up etc.What application was more in the present biological filter is aeration biological filter device, and its equipment is approximate with the rapid filter of giving water treatment, and the pond inner bottom part is established supporting layer, and its top then is the filler as filtrate.At supporting layer blast main and the air-diffuser that aeration is used is set, treating water header double as back flushing water pipe also is arranged in the supporting layer.Processed raw waste water enters the pond body from top, pond, and the filtering layer by being made up of filler, is formed with by microorganism at filling surface and perches the microbial film that forms.When sewage filters filtering layer, carry out aeration by blast main to filtering layer by the bottom, pond, air rises on the gap by filler, contacts with defluent sewage, airborne oxygen is transferred in the sewage, and the microorganism on microbial film provides sufficient dissolved oxygen and abundant organism.Under the metabolism of microorganism, organic pollutant is degraded, and sewage obtains handling.Suspended substance in the raw waste water reaches because the biological sludge that biofilm detachment forms is held back by filler.Filtering layer has the function of secondary sedimentation basins.When the holding filth capacity in the filtering layer reaches to a certain degree, filtering layer is carried out back flushing, backwashing wastewater is discharged by its delivery pipe.The prior biological filter tank exists following problem: sewage enters from top, and surperficial smell is big, and is serious to atmospheric pollution, and does not have proprietary distribution apparatus, oxygen replenishing equipment, water distribution, the flushing inhomogeneous, oxygen transfer efficiency is low.For example number of patent application is 98240242, name is called a kind of biological filter that is used for the water purification and discloses a kind of biological filter that water purifies that is used for, it comprises the pond body, the pool wall that it is characterized in that the pond body has adopted three-ply sandwich structure, wherein ectonexine adopts has the non-metallic material of certain intensity to make, internal layer adopts the heat-insulation and heat-preservation material, the filter tank is hermetically sealed, basis is novel to make the temperature in the filter tank be subjected to the influence of ambient temperature minimum, and can regulate and control temperature in the pond easily, the filter tank extremely also can normally moved under the harsh climate environment, can adapt to-50 ℃～50 ℃ temperature range.Application number is 00221590, name is called and discloses a kind of improved BAF in a kind of improved BAF, belong to sewage treatment area, comprise the pond body, water inlet pipe, rising pipe, be carried on the pebble bed on the back up pad, filter material layer, water inlet pipe connects buffering distributing water room in pond body bottom, the back up pad that is arranged on buffering distributing water room top has equally distributed distributing hole, the top of described back up pad is equipped with the aeration tube of the logical gas blower of a winding, filter material layer is piled up by the particulate porous ceramic post sintering filler of regular circular and is formed, body top, pond is provided with drainage tray, and described drainage tray and rising pipe join.The utlity model has the characteristics that treatment effect is better, effluent quality is higher, at the BOD volumetric loading during at 6kg/m ↑ [3] .d, its water outlet SS and BOD ↓ [5] can remain on below the 30mg/l, CODcr can remain on below the 60mg/l, well below the primary standard of country's " integrated wastewater discharge standard ".
The utility model content
Enter from top in order to overcome prior biological filtering basin sewage, the surface smell is big, serious to atmospheric pollution, and do not have proprietary water and air distributing equipment, oxygen replenishing equipment, water distribution, flushing are inhomogeneous, the deficiency that oxygen transfer efficiency is low, the utility model provides a kind of clean and maintenance convenient, the device long service life, and suitability is strong, can be used for handling multiple former water pollutant, and air is polluted little.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of biological aerated filter pond, be made up of a plurality of BAF unit, the unitary primary structure of biological aerated filter is biological aerated filter, filtration module, the water inlet of former water and back flushing module, process gas module., former water water inlet and back flushing module are housed in the biological aerated filter bottom, above former water water inlet and recoil water module, the process gas module is housed.Described process gas module comprises airing system, (the water flushing of filter back), wherein airing system comprises process gas blower fan, air-supply duct, gas manifold and air diffuser, the process gas blower fan is connected with air-supply duct, air-supply duct passes flume wall and be divided into many gas manifolds on the filter plate of bottom of gullet, a plurality of air diffusers are installed, the every square meter 25 of density or 50 on the gas manifold.(filter back water rinse-system comprises flushing pump and water-supply pipe, and water-supply pipe is connected with air-supply duct, and air diffuser is carried out periodic flushing.)
Described air diffuser comprises clip, shack, diaphragm.
Described filtration module comprises supporting layer, filter plate, filter, and filter plate is installed in process gas module below, is provided with many filters in filter plate, and supporting layer is installed in the filter plate top, is filled with biofilter material on supporting layer.
Described biofilter material is---will be placed on indefinite bed thickness and will be carried out in biological respinse and the filtering equipment.Biofilter material is as substratum and the filtering medium thing of bacterium.It can the variation from subzero ten degree (10 °) to 40 degree (40 °) by long period of soaking and withstand temperature.PH value is between 6 to 8.
Described former water water inlet and back flushing module comprise former water influent weir, inlet well, water inlet pipe, backwashing pump, back flushing gas blower, backwashing wastewater pond, the back flushing gas blower is connected with bottom, filter tank water distributing area by the back flushing air-supply duct, backwashing pump is connected with bottom, filter tank water distributing area by the back flushing water pipe, carries out even distribution and water distribution by filter.Water distributing area also is provided with former water water inlet pipe in the bottom, biological filter, is provided with the back flush discharge pipe at the biological aerated filter top.
The utility model is divided into raw water filtration and two processes of back flushing when using, in the raw water filtration process, former water at first enters distributing flue or distribution reservoir, under the effect of gravity water distribution, enter inlet well by influent weir, enter biological aerated filter bottom water distributing area by former water water inlet pipe, from rising to biofilter material on the supporting layer, filters filter again, treating water after the filtration at first enters out water channel through effluent weir, after rising pipe enters the back flushing pond, when the back flushing pond was filled with, the water overflow was to the subsequent disposal pond.The process gas blower fan is sent into biofilter material layer from air-supply duct, gas manifold from air diffuser with outside air, for biological filter material layer provides oxygen.
In backwash process, at first backwash gas enters bottom, filter tank water distributing area through the back flushing fan action by the back flushing tracheae, forms an air cushion layer; The reflexive flushing tank of backwashing water enters bottom, filter tank water distributing area through the water pump effect by the back flushing water pipe then, undertaken entering the biofilter material layer after even distribution and the water distribution by filter, clean the biological filter, backwashing wastewater is to a certain degree after the backwashing wastewater at biological aerated filter top is collected canal, enters the backwashing wastewater pond to delivery pipe.
The beneficial effects of the utility model are, take to flow up into water, and the suspended matter in the sewage can not form filtering surface and stop up, and filtering the front portion rises in filtrate gradually, suspended substance dams evenly, and has got rid of formation air bag and bubble coalescence, influences the possibility of filter effect; Suitability is strong, can be used for handling multiple former water pollutant, and air is polluted little; Clean and maintenance is convenient, the device long service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 biological aerated filter device one-piece construction synoptic diagram
Fig. 2 biological aerated filter pond group
1. filtration mediums among Fig. 1,2. supporting layer, 3. process gas, 4. the backwash tracheae is 5. handled water pipe, 6. backwashing wastewater pipe, 7. former water and back flushing water pipe, 8. filter, 9. air diffuser, 10. filter plate.
Embodiment
In the embodiment shown in fig. 1, a monomer BAF is made up of following member: a Rectangular Water Trough.One group of whole filter plate 10, the filter 8 that is mounted thereon can guarantee that the biological filter water and air distributing is even.Process gas 3 systems are positioned on the filter plate in the supporting layer 2, and this system is made up of main gas-distribution pipe and many gas-distribution pipes and the Oxazur air diffusers 9 that are mounted thereon.Microorganism a large amount of attached combine in (supporting layer 2 and BIOLITE biofilter materials 1) on the biofilter material 1 with biopurification function. filter plate and last filter thereof have excellent sealing, it under the filter plate water water distributing area into, former water and back flushing water pipe 7 insert thus, and backwash tracheae 4 also inserts thus.One group is equipped with the effluent weir of being made up of tilted plate and anticorrosion grid, is that backwashing wastewater is collected canal and handled water channel behind the weir, and overflow was to follow-up structures after the water after the processing inserted the recoil ponds by processing water pipe 5.The water that backwashing wastewater is collected canal inserts the backwashing wastewater pond by backwash waste pipe 6.
In the embodiment shown in Figure 2, the BAF group is formed by a plurality of monomer BAF set, and they can a shared cover back-purge system.BAF group is by following main composition part: the monomer BAF in the same area can adopt and be arranged in juxtaposition, but more commonly adopt positioned opposite, can form the central piping lane passage of each monomer leading portion of can leading to like this between the biological filter.Under normal conditions, water inlet flows into each filter tank distribution openings (also can supply water by pumping plant) at gravity in the supply canal of filter tank group top layout, and the water system that process gas system one to one (perhaps the public process gas of cover system is a whole filter tank group air feed) and a cover are commonly used to the air system cleaning can be overlapped with one in each monomer filter tank.Article one, water is collected canal after the filter of filter tank group top layout.A back flushing tank stores a certain amount for the treatment of water for periodically back flushing use of BAF in this pond.The flushing unit comprises: wash-water pump, back flushing gas blower.A backwashing wastewater pond, this pond are used for collecting BAF back flushing water outlet.Biological filter group and supporting pipe fitting thereof.
Claims (10)
1. biological aerated filter pond, form by a plurality of BAF unit, it is characterized in that: the monomer BAF in the same area can adopt and be arranged in juxtaposition, but more commonly adopt positioned opposite, can form the central piping lane passage of each monomer leading portion of can leading to like this between the biological filter.
2. biological aerated filter according to claim 1 pond, it is characterized in that: water inlet flows into each filter tank distribution openings at gravity in the supply canal of filter tank group top layout, and process gas system is one to one overlapped in each monomer filter tank one and a cover is commonly used to the water system that air system is cleaned.Article one, water is collected canal after the filter of filter tank group top layout.
3. biological aerated filter according to claim 1 pond, it is characterized in that: a back flushing tank, store a certain amount for the treatment of water in this pond for periodically back flushing use of BAF, the flushing unit comprises: wash-water pump, the back flushing gas blower, a backwashing wastewater pond, this pond are used for collecting BAF back flushing water outlet.
4. biological aerated filter pool unit, comprise biological aerated filter, filtration module, the water inlet of former water and back flushing module, process gas module, it is characterized in that: former water water inlet and back flushing module are housed in the biological aerated filter bottom, above former water water inlet and recoil water module, the process gas module are housed.
5. biological aerated filter pool unit according to claim 4, it is characterized in that: the process gas module comprises airing system, filter back water rinse-system, wherein airing system comprises process gas blower fan, air-supply duct, gas manifold and air diffuser, the process gas blower fan is connected with air-supply duct, air-supply duct passes flume wall and be divided into many gas manifolds on the filter plate of bottom of gullet, and a plurality of air diffusers are installed on the gas manifold.
6. biological aerated filter pool unit according to claim 4, it is characterized in that: air diffuser comprises clip, shack, diaphragm.
7. biological aerated filter pool unit according to claim 4, it is characterized in that: filtration module comprises supporting layer, filter plate, filter, and filter plate is installed in process gas module below, is provided with many filters in filter plate, supporting layer is installed in the filter plate top, is filled with biofilter material on supporting layer.
8. biological aerated filter pool unit according to claim 4 is characterized in that: former water water inlet and backwashing water module comprise former water influent weir, inlet well, water inlet pipe, backwashing pump, back flushing gas blower, backwashing wastewater pond.The back flushing gas blower is connected with bottom, filter tank water distributing area by the back flushing air-supply duct, and backwashing pump is connected with bottom, filter tank water distributing area by the back flushing water pipe, carries out water distribution and distribution by filter.Also be provided with former water water inlet pipe in the bottom, biological filter, be provided with the back flush discharge pipe at the biological aerated filter top.
9. biological aerated filter according to claim 1 pond, it is characterized in that: be divided into two processes of raw water filtration and back flushing during use, in the raw water filtration process, former water at first enters distributing flue or distribution reservoir, under the effect of gravity water distribution, enter inlet well by influent weir, enter biological aerated filter bottom water distributing area by former water water inlet pipe, from rising to biofilter material on the supporting layer, filters filter again, treating water after the filtration at first enters out water channel through effluent weir, after rising pipe enters the back flushing pond, when the back flushing pond was filled with, the water overflow was to the subsequent disposal pond.The process gas blower fan is sent into biofilter material layer from air-supply duct, gas manifold from air diffuser with outside air, for biological filter material layer provides oxygen.
10. biological aerated filter according to claim 1 pond is characterized in that: in backwash process, at first backwash gas enters the bottom, filter tank through the back flushing fan action by the back flushing tracheae, forms an air cushion layer; The reflexive flushing tank of backwashing water enters bottom, filter tank water distributing area through the water pump effect by the back flushing water pipe then, undertaken entering the biofilter material layer after even distribution and the water distribution by filter, clean the biological filter, backwashing wastewater is to a certain degree after the backwashing wastewater at biological aerated filter top is collected canal, enters the backwashing wastewater pond to delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201518258U CN201427890Y (en) | 2009-04-24 | 2009-04-24 | Biological aerated filter for sewage purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201518258U CN201427890Y (en) | 2009-04-24 | 2009-04-24 | Biological aerated filter for sewage purification |
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| Publication Number | Publication Date |
|---|---|
| CN201427890Y true CN201427890Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201518258U Expired - Lifetime CN201427890Y (en) | 2009-04-24 | 2009-04-24 | Biological aerated filter for sewage purification |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870539A (en) * | 2009-04-24 | 2010-10-27 | 得利满水处理***(北京)有限公司 | Aeration biological filter for sewage purification |
| CN109020048A (en) * | 2018-07-09 | 2018-12-18 | 中国航空规划设计研究总院有限公司 | A kind of lithium battery waste water initial stage processing integrated apparatus |
-
2009
- 2009-04-24 CN CN2009201518258U patent/CN201427890Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101870539A (en) * | 2009-04-24 | 2010-10-27 | 得利满水处理***(北京)有限公司 | Aeration biological filter for sewage purification |
| CN109020048A (en) * | 2018-07-09 | 2018-12-18 | 中国航空规划设计研究总院有限公司 | A kind of lithium battery waste water initial stage processing integrated apparatus |
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Granted publication date: 20100324 |
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| CX01 | Expiry of patent term |