CN203530024U - Compartmented composite filler biological aerated filter - Google Patents
Compartmented composite filler biological aerated filter Download PDFInfo
- Publication number
- CN203530024U CN203530024U CN201320648450.2U CN201320648450U CN203530024U CN 203530024 U CN203530024 U CN 203530024U CN 201320648450 U CN201320648450 U CN 201320648450U CN 203530024 U CN203530024 U CN 203530024U
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- Prior art keywords
- filter
- material layer
- lattice
- cavity
- filter material
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- 239000000945 filler Substances 0.000 title abstract description 3
- 239000002131 composite material Substances 0.000 title abstract 2
- 239000000463 material Substances 0.000 claims abstract description 38
- 239000004576 sand Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000011001 backwashing Methods 0.000 claims description 22
- 238000005273 aeration Methods 0.000 claims description 16
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 15
- 239000010865 sewage Substances 0.000 claims description 15
- 230000000630 rising effect Effects 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 208000002925 dental caries Diseases 0.000 description 3
- 239000007789 gas Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Abstract
The utility model discloses a compartmented composite filler biological aerated filter which comprises a filter body and a baffle which forms an included angle not equal to 90 DEG together with the bottom of the filter body, wherein the baffle is lower than the side wall of the filter body and is used for dividing the filter body into left and right cavity bodies, the left cavity body is narrow at the lower part and wide at the upper part, and the right cavity body is narrow at the upper part and wide at the lower part; wastewater enters the filter from a water inlet pipe in the lower side of a filter plate of the left cavity body, passes through a first filter layer, a second filter layer and a sand filter layer in sequence, and flows out of a water outlet pipe on the lower side of a filter plate of the right cavity body. According to the filter, an anaerobic zone and an aerobic zone are divided into two relatively independent spaces, the structural design is unique, the filtering effect is high, few blocking materials are generated, the cleaning process is convenient, the performance is stable, the operation is flexible, and large-scale popularization is facilitated.
Description
Technical field
The utility model belongs to technical field of sewage, is specifically related to a kind of lattice compounded mix BAF.
Background technology
BAF (biological aerated filter) is called for short BAF, is on the basis of ordinary biofilter, to use for reference water-feeding leaching pool technique beginning of the nineties late 1980s and the sewage treatment technique developed, at first for the tertiary treatment of sewage.From the eighties, in Europe, build up after First BAF sewage work, BAF is widely popular, and oneself has the sewage work that hundreds of seats differ in size to adopt this technology in the world at present.
BAF has good removal effect to COD, ammonia nitrogen, SS etc., but limited to the removal effect of total nitrogen.Remove total nitrogen, need to create the environment of aerobic and anoxic, nitrification and denitrification is efficiently carried out.Way has two classes at present, and a class forms aerobic and anaerobic environment by multi-stage aeration biological filter tank, and this method shortcoming is to have increased pond body floor space; Another kind of is that oxygen-starved area and aerobic zone are integrated in one, in height vertically be superimposed with lower two-layer and level is upper left parts on the right side every two kinds of forms, wherein vertical stacking pattern is unfavorable for aerobic zone and oxygen-starved area to separate back flushing, in level, left and right is simple separates, because lacking aeration, oxygen-starved area washes away, filler easily stops up, and causes back flushing frequency to increase, and affects processing efficiency.
Summary of the invention
The purpose of this utility model is to provide a kind of lattice compounded mix BAF.
The technical solution of the utility model is as follows:
A kind of lattice compounded mix BAF, comprise that body bottom, Ti Heyu pond, pond becomes to be not equal to the dividing plate of 90 ° of angles, the height of dividing plate is less than the height of pond body sidewall, and described dividing plate is divided into two cavitys in left and right by pond body, left cavity is bottom-narrow and top-wide state, and right cavity is up-narrow and down-wide shape;
The place, body bottom, nearly pond of described left and right cavity is provided with filter plate and is located at the filter on filter plate, and the filter plate top of left cavity is provided with the first filter material layer, and the filter plate top of right cavity is provided with sand filter blanket and is located at the second filter material layer on sand filter blanket; Between described sand filter blanket and the second filter material layer, be provided with aeration tube;
Sewage enters filter tank by the water inlet pipe of the filter plate downside of left cavity, successively through the first filter material layer, the second filter material layer, sand filter blanket, then from the rising pipe of the filter plate downside of described right cavity, flows out.
Usually, opening is arranged at the top of pond body, is convenient to being written into of filtrate.The height design of dividing plate is less than the height of pond body sidewall, can make sewage more easily from left cavity, enter right cavity.
Preferably, described angle is 72 ~ 89 °.
The utility model adopts the dividing plate tilting that pond body is divided into two cavitys in left and right, and left cavity is bottom-narrow and top-wide state, can, so that being positioned at the flow velocity of the first filter material layer bottom increases, effectively prevent hardening and being compacted of the first filter material layer bottom filtrate; And right cavity is up-narrow and down-wide shape, can be so that current Flow Velocity when through sand filter blanket slows down, improve the filter effect of sand filtration, the design that right cavity of while is up-narrow and down-wide shape can also make bubble converge gradually in uphill process, the aeration effect while improving aeration.
By controlling, in the first filter material layer of described left cavity, form anaerobic zone, in the second filter material layer of right cavity, form aerobic zone; Sewage utilizes organism to carry out denitrification denitrogenation in anaerobic zone, and the sewage of processing through anaerobic zone enters behind aerobic zone, and its contained organism is degraded, and ammonia nitrogen occurs nitrated, has therefore removed COD and the ammonia nitrogen in sewage; Finally by sand filter blanket, the turbidity of sewage is further removed.Described rising pipe is also connected by return line with water inlet pipe, and as required, the water outlet of right cavity can be back to and in left cavity, be carried out denitrification by return line, thereby further promotes the effect of denitrogenation processing.
As a kind of preferred version, the filter material layer that the ceramic grain filter that described the first filter material layer is is 5 ~ 8mm by particle diameter forms.The first filter material layer is selected the filtrate that particle diameter is larger, can reduce resistance, reduces and stops up the possibility occurring.
As a kind of preferred version, the filter material layer that the ceramic grain filter that the second filter material layer is is 3 ~ 5mm by particle diameter forms.
As a kind of preferred version, described sand filter blanket is is the sand filter blanket that 2 ~ 4mm sand grains filtrate forms by particle diameter.
For the ease of cleaning, preferably at described left cavity, be provided with backwashing water water inlet pipe and backwashing water rising pipe; In like manner, preferably at described right cavity, be provided with backwashing water water inlet pipe and backwashing water rising pipe.Left cavity and right cavity are divided into two relatively independent spaces by dividing plate, are more convenient for left cavity and right cavity to carry out independent back flushing, make operation more flexible.
For the ease of cleaning right cavity, as a kind of preferred version, the filter plate downside of described right cavity is also provided with back flushing aeration tube.The disturbance of bubble to the second filter material layer when the design that right cavity is up-narrow and down-wide shape can strengthen aeration back flushing, strengthens the collision friction between filtrate, shearing and the impact effect of strengthening current, thus improve backwash effect.
The beneficial effects of the utility model are:
The utility model discloses a kind of lattice compounded mix BAF, this biological filter is by anaerobic zone and be aerobicly distinguished into two relatively independent spaces, the structure design that it is unique, have decarburization denitrification effect good, filter effect is high, stops up few, be convenient to the effect of cleaning, stable performance, flexible operation, is easy to large-scale promotion.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of lattice compounded mix of the utility model BAF.
Wherein, 1 is pond body, and 11 is left cavity, and 12 is right cavity, 21 is water inlet pipe, and 22 is rising pipe, and 23 is return line, 31 is the first backwashing water water inlet pipe, and 32 is the second backwashing water water inlet pipe, and 4 is filter plate, 5 is filter, and 61 is the first filter material layer, and 62 is the second filter material layer, 63 is sand filter blanket, and 71 is the first backwashing water water shoot, and 72 is the second backwashing water water shoot, 8 is aeration tube, and 9 is back flushing aeration tube, and 10 is dividing plate.
Embodiment
Below in conjunction with drawings and Examples, the technical solution of the utility model is described further.
A kind of lattice compounded mix BAF, structure as shown in Figure 1, comprise pond body 1 and become the dividing plate 10 of 82 ° of angles with pond body 1 bottom, two cavitys that communicate at body top, close pond about described dividing plate 10 is divided into pond body 1, left cavity 11 is bottom-narrow and top-wide state, and right cavity 12 is up-narrow and down-wide shape.
The place, body bottom, nearly pond of described left and right cavity is provided with filter plate 4 and is located at the filter 5 on filter plate 4, and filter plate 4 tops of left cavity 11 are provided with the first filter material layer 61, and filter plate 4 tops of right cavity 12 are provided with sand filter blanket 63 and are located at the second filter material layer 62 on sand filter blanket 63; Between described sand filter blanket 63 and the second filter material layer 62, be provided with aeration tube 8; The filter material layer that the ceramic grain filter that described the first filter material layer 61 is is 5 ~ 8mm by particle diameter forms, the filter material layer that the ceramic grain filter that the second filter material layer 62 is is 3 ~ 5mm by particle diameter forms, described sand filter blanket is is the sand filter blanket that 2 ~ 4mm sand grains filtrate forms by particle diameter.
Effluent stream enters filter tank to the water inlet pipe 21 of filter plate 4 downsides of the left cavity 11 of serving as reasons, and successively through the first filter material layer 61, the second filter material layer 62, sand filter blanket 63, then from the rising pipe 22 of filter plate 4 downsides of described right cavity 12, flows out.
Described left cavity 11 is provided with the first backwashing water water inlet pipe 31 and the first backwashing water water shoot 71; Described right cavity 12 is provided with the second backwashing water water inlet pipe 32 and the second backwashing water water shoot 72.Filter plate 4 downsides of described right cavity 12 are also provided with back flushing aeration tube 9.
Described rising pipe 22 is connected by return line 23 with water inlet pipe 21.
During work, sewage enters filter tank from the water inlet pipe 21 of left cavity 11, by the first filter material layer 61, carries out denitrification denitrogenation, then upwards climbs over dividing plate 10 and enters right cavity 12; The sewage oxygen that aerobe membrane interaction and the aeration tube 8 by the second filter material layer 62 provides at right cavity 12 carries out organic matter degradation and nitrated, removes COD and ammonia nitrogen, finally enters sand filter blanket 63, further removes turbidity.According to actual needs, a water outlet part for right cavity 12 can be back in left cavity 11 and be carried out denitrification by return line 23, thereby removes total nitrogen, and a part of water outlet is discharged by rising pipe 22.
When lattice compounded mix BAF is after operation for some time, need to carry out back flushing, process is as follows:
During the left cavity 11 of back flushing, backwashing water enters from the first backwashing water water inlet pipe 31, by the first backwashing water water shoot 71, is discharged; During the right cavity 12 of back flushing, first by back flushing aeration tube 9 pressurized air, carry out gas recoil, then by the second backwashing water water inlet pipe 32, enter backwashing water, carry out water-gas combined back flushing, finally close back flushing aeration tube 9, carry out single water backwash and wash, the sewage after back flushing is discharged from the second backwashing water water shoot 72.
Adopt the utility model to process certain municipal wastewater treatment plant settling pit water outlet of south, oxygen-starved area empty bed hydraulic detention time is 0.9h, aerobic zone empty bed hydraulic detention time is 1.5h, the empty bed of turbidity removal filtrate hydraulic detention time is 0.4h, reflux ratio is 100%, influent COD is 80 ~ 150mg/L, ammonia nitrogen 8 ~ 16mg/L, total nitrogen is in 24mg/L left and right, turbidity 40 ~ 200NTU, COD is lower than 30 after treatment, ammonia nitrogen is lower than 2, total nitrogen is lower than 15, turbidity is less than 3NTU, meet < < urban wastewater treatment firm pollutant emission standard > > (GB18918-2002) one-level A standard.
Claims (8)
1. a lattice compounded mix BAF, it is characterized in that, comprise that body bottom, Ti Heyu pond, pond becomes to be not equal to the dividing plate of 90 ° of angles, the height of dividing plate is less than the height of pond body sidewall, described dividing plate is divided into pond body the cavity of two of left and right, left cavity is bottom-narrow and top-wide state, and right cavity is up-narrow and down-wide shape;
The place, body bottom, nearly pond of described left and right cavity is provided with filter plate and is located at the filter on filter plate, and the filter plate top of left cavity is provided with the first filter material layer, and the filter plate top of right cavity is provided with sand filter blanket and is located at the second filter material layer on sand filter blanket; Between described sand filter blanket and the second filter material layer, be provided with aeration tube;
Sewage enters filter tank by the water inlet pipe of the filter plate downside of left cavity, successively through the first filter material layer, the second filter material layer, sand filter blanket, then from the rising pipe of the filter plate downside of described right cavity, flows out.
2. lattice compounded mix BAF according to claim 1, is characterized in that, described angle is 72 ~ 89 °.
3. lattice compounded mix BAF according to claim 1, is characterized in that, the filter material layer that described the first filter material layer forms for the ceramic grain filter that is 5 ~ 8mm by particle diameter; The filter material layer that the ceramic grain filter that the second filter material layer is is 3 ~ 5mm by particle diameter forms.
4. lattice compounded mix BAF according to claim 1, is characterized in that, the sand filter blanket that described sand filter blanket forms for the sand grains filtrate that is 2 ~ 4mm by particle diameter.
5. lattice compounded mix BAF according to claim 1, is characterized in that, described left cavity is provided with backwashing water water inlet pipe and backwashing water rising pipe.
6. lattice compounded mix BAF according to claim 1, is characterized in that, described right cavity is provided with backwashing water water inlet pipe and backwashing water rising pipe.
7. lattice compounded mix BAF according to claim 1, is characterized in that, the filter plate downside of described right cavity is also provided with back flushing aeration tube.
8. lattice compounded mix BAF according to claim 1, is characterized in that, rising pipe is also connected by return line with water inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320648450.2U CN203530024U (en) | 2013-10-21 | 2013-10-21 | Compartmented composite filler biological aerated filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320648450.2U CN203530024U (en) | 2013-10-21 | 2013-10-21 | Compartmented composite filler biological aerated filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203530024U true CN203530024U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320648450.2U Expired - Lifetime CN203530024U (en) | 2013-10-21 | 2013-10-21 | Compartmented composite filler biological aerated filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203530024U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731060A (en) * | 2016-12-06 | 2017-05-31 | 欧盛腾水处理技术（杭州）有限公司 | Level stream sand filter and its water treatment technology |
| CN108689493A (en) * | 2018-06-21 | 2018-10-23 | 广州市华绿环保科技有限公司 | A kind of low energy consumption synchronizes nitrosation denitrification sewage and carries mark Processes and apparatus |
| CN113526800A (en) * | 2021-08-04 | 2021-10-22 | 九江南大环保创新中心有限公司 | Be used for biochemical tail water to carry mark transformation degree of depth biological filter for denitrogenation |
-
2013
- 2013-10-21 CN CN201320648450.2U patent/CN203530024U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106731060A (en) * | 2016-12-06 | 2017-05-31 | 欧盛腾水处理技术（杭州）有限公司 | Level stream sand filter and its water treatment technology |
| CN108689493A (en) * | 2018-06-21 | 2018-10-23 | 广州市华绿环保科技有限公司 | A kind of low energy consumption synchronizes nitrosation denitrification sewage and carries mark Processes and apparatus |
| CN113526800A (en) * | 2021-08-04 | 2021-10-22 | 九江南大环保创新中心有限公司 | Be used for biochemical tail water to carry mark transformation degree of depth biological filter for denitrogenation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |