CN206783397U - Denitrification double layer filter - Google Patents
Denitrification double layer filter Download PDFInfo
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- CN206783397U CN206783397U CN201720382126.9U CN201720382126U CN206783397U CN 206783397 U CN206783397 U CN 206783397U CN 201720382126 U CN201720382126 U CN 201720382126U CN 206783397 U CN206783397 U CN 206783397U
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Abstract
It the utility model is related to denitrification double layer filter, including pond body, haydite layer, layer of sand, boulder bed and filter plate are disposed with pond body from top to bottom, filter plate is provided with permeable hole, and haydite layer is filled with haydite, and haydite is spherical, and with the haydite hole of insertion, the particle diameter of haydite, and the particle diameter of boulder bed inserts, it is all higher than the particle diameter of layer of sand inserts；Space below filter plate is water purification space, it is communicated with water purification exhalant canal and backwash intake tunnel, space more than haydite layer is sewage space, is communicated with wastewater influent passage and backwash exhalant canal, and water purification exhalant canal and backwash intake tunnel are provided with valve.Microorganism can grow in through hole and haydite gap, can improve biomembrane carrying capacity；Haydite is spherical, and backwash resistance is smaller, and the through hole of haydite can be protected to biofilm formation, can reduce damage of the backwash to biomembrane, enable the fast quick-recovery of filter tank treatment effeciency, and layer of sand can retain the aging biomembrane to come off, avoids polluting water purification.
Description
Technical field
Sewage disposal is the utility model is related to, particularly a kind of denitrification double layer filter.
Background technology
The denitrification that sewage treatment area is related to, it is to utilize the pollutants such as the nitrate in denitrifying bacterium processing sewage, nitre
Acid group, which is bacterially decomposed, utilizes and discharges nitrogen.
Denitrification filter pool is used exclusively for the filter tank of denitrification processing, quartz sand or volcanic rock being normally filled with its pond body
Etc filtrate as filtering layer, substantial amounts of denitrifying bacterium, micropopulation are distributed in filter material surface, growth metabolism, form biomembrane.
When sewage containing nitrate nitrogen flows through above-mentioned filtrate, escaped by micropopulation metabolic conversion for nitrogen, while also having in decomposition water
Organic pollutants, the sewage after denitration flow out from bottom of pond.
Current denitrification filter pool is usually single uniform filtering layer, such as individually uses using quartz sand or individually volcanic rock
As filtering layer, during the use of filter tank, biomembrane that part aging comes off, which may penetrate filtering layer, causes effluent quality to reduce, its
The biomembrane that he does not penetrate filtering layer is constantly accumulated in filtering material particle gap, and local stoppages easily occur, and causes other areas of filtering layer
Domain flow velocity increase, forms short circulation road, sewage is fully metabolized without denitrifying bacterium, just flowed directly out.
Blocked to remove, it is necessary to carry out the backwash of higher-strength, but the current backwashed are taken away filtrate top layer and largely lived
Property biocoene, makes filter tank denitrifying capacity decline in a short time.
Utility model content
Technical problem to be solved in the utility model is：A kind of denitrification double layer filter is provided, during backwash, can be reduced
Active biological film is lost in.
Technical scheme is used by the utility model solves its technical problem：
Denitrification double layer filter, including pond body, haydite layer, layer of sand, cobble are disposed with from top to bottom in the pond body
Layer and filter plate, the filter plate is provided with permeable hole, and permeable hole size is less than the inserts size of boulder bed, and the haydite layer is filled out
Filled with haydite, the haydite is spherical, and with the haydite hole of insertion, the particle diameter of the haydite, and boulder bed inserts
Particle diameter, it is all higher than the particle diameter of layer of sand inserts；
Space in the pond body below filter plate be collecting space, collecting space be communicated with denitration water exhalant canal with
Intake tunnel is backwashed, the space being located at more than haydite layer in the pond body is sewage space, and sewage space is communicated with sewage and entered
Aquaporin and backwash exhalant canal, the denitration water exhalant canal and backwash intake tunnel are provided with valve.
Further, the wastewater influent passage includes inlet channel, and the inlet channel extends along pond body inwall to be laid out, water inlet
Ditch bottom is provided with multiple drain gullies along bearing of trend, and the drain gully leads to the sewage space；The backwash water outlet is led to
Road is connected below pond body wall and drain gully.
Further, the haydite has two or three haydite hole, and the haydite hole passes through the haydite centre of sphere, and hangs down each other
Orthogonal is pitched.
Further, the haydite particle diameter is thick in 1.5~2mm, the filling of haydite layer in 5~7mm, the haydite hole aperture of haydite
Degree is in 1~1.5m；The inserts of the layer of sand is quartz sand, and its particle diameter is in 1.5~3mm, and layer of sand filling thickness is in 0.7~1m；
The inserts of the boulder bed is cobble, and 25~35mm of its particle diameter, the boulder bed filling thickness is in 0.1~0.3m；The dirt
Water intake tunnel, backwash exhalant canal are provided with valve.
The beneficial effects of the utility model are：This denitrification double layer filter, haydite layer, sand are followed successively by from top to bottom in pond
Layer, boulder bed and filter plate, the haydite of haydite layer have through hole, and microorganism is in haydite through hole and haydite surface can grow,
Biomembrane bond area can be improved；Haydite layer inserts particle diameter is larger, and gap is also big between its particle, is not susceptible to block, biology
After film comes off, with filtered water stream by ceramic grain filter gap, until the layer of sand of bottom small―gap suture, is trapped, will not pollute water outlet；
During backwash, bottom layer of sand particulate interspaces are small, and backwash water velocity is fast, and thorough, top haydite is rinsed to the biomembrane to come off
Layer particle diameter is big, and gap is big, and flow velocity is slow, and active biological film will not be eluted loss, filter tank treatment effeciency is remained efficient, base
This is not influenceed by backwashing.
Brief description of the drawings
Fig. 1 is the cross-sectional view of denitrification double layer filter of the present utility model；
Fig. 2 is the diagrammatic cross-section for the haydite that the utility model is related to；
Reference is in figure：Pond body 1, sewage space 10, haydite layer 11, layer of sand 12, boulder bed 13, filter plate 14, catchment
Space 15, wastewater influent passage 20, drain gully 200, denitration water exhalant canal 21, backwash intake tunnel 22, backwash water outlet
Passage 23, haydite 3, haydite hole 31.
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples：
Denitrification double layer filter, including pond body 1, haydite layer 11, layer of sand are disposed with from top to bottom in the pond body 1
12nd, boulder bed 13 and filter plate 14, the filter plate 14 is provided with permeable hole, and permeable hole size is less than the inserts chi of boulder bed 13
Very little, the haydite layer 11 is filled with haydite 3, and the haydite 3 is spherical, and with the haydite hole 31 of insertion, the grain of the haydite 3
Footpath, and the particle diameter of the inserts of boulder bed 13, it is all higher than the particle diameter of the inserts of layer of sand 12；
Positioned at space of the filter plate below 14 it is collecting space 15 in the pond body 1, collecting space 15 is communicated with denitration water and gone out
Aquaporin 21 and backwash intake tunnel 22, positioned at the space of haydite layer more than 11 it is sewage space 10 in the pond body 1, sewage
Space 10 is communicated with wastewater influent passage 20 and backwash exhalant canal 23, and the denitration water exhalant canal 21 and backwash are intake
Passage 22 is provided with valve.
Above-mentioned denitrification double layer filter is applied to carry out purified treatment to sewage using denitrifying bacterium.It includes pond body 1, pond
Body 1 is used to accommodate the microbial profiles such as inserts and sewage, denitrifying bacterium in pond body 1.
As shown in figure 1, haydite layer 11, layer of sand 12, boulder bed 13 and filter plate 14 are disposed with pond body 1 from top to bottom,
Sewage enters the sewage space 10 on top through wastewater influent passage 20, successively by haydite layer 11, layer of sand 12, boulder bed 13 and filter
Plate 14, subsequently into collecting space 15, flowed out through denitration water exhalant canal 21, wherein haydite layer 11 and layer of sand 12 are purification filtering
Main region, boulder bed 13 and filter plate 14 mainly play a supportive role.
The inserts of haydite layer 11 is haydite 3, such as can be the formation haydite of a large amount of haydites 3 layer 11 of accumulation.Haydite 3 is
Spherical, heap poststack can form gap between each haydite 3, and haydite 3 has the haydite hole 31 of insertion, and sewage can be along gap
Circulation, can also circulate in haydite hole 31.
The microorganisms such as denitrifying bacterium can be attached to the gap of haydite 3 and the inwall of haydite hole 31, form biomembrane, and in dirt
Grow, be metabolized in water, make sewage purification.
According to circumstances, a haydite 3 can set one or more haydite hole 31, and the position in haydite hole 31 is preferably worn
Cross the centre of sphere of haydite 3.
As shown in Fig. 2 can be that the haydite 3 has two haydite holes 31, the haydite hole 31 passes through the haydite centre of sphere, and
Perpendicularly cross each other.Or can also be that haydite 3 has three haydite holes 31, three haydite holes 31 pass through the haydite centre of sphere, and that
This square crossing.
Above-mentioned haydite hole 31 is advantageous to increase the bond area of microorganism, makes biofilm development more vigorous, lifting sewage
Detergent power.And haydite hole 31 can be protected to biofilm formation, prevent that backwashing current causes micropopulation to be lost in.
The bottom of haydite layer 11 is layer of sand 12, the inserts of layer of sand 12 generally can be using quartz sand or other
Similarly sized particle.The particle diameter of haydite 3 is greater than the particle diameter of the inserts of layer of sand 12, and gap is smaller between making the particle of layer of sand 12,
The aging biomembrane that haydite layer 11 comes off can be retained by layer of sand 12, avoid flowing into the water outlet after purifying.
The bottom of layer of sand 12 is boulder bed 13, and its inserts generally can be the cobble or other classes that shape differs
Like particle.Cobble particle diameter is more than the inserts particle diameter of layer of sand 12, and boulder bed 13 is located on filter plate 14, is mainly used in carrying the pottery on top
Granulosa 11 and the inserts of layer of sand 12, the cobble of boulder bed 13 stack in a jumble, gap is interlocked, and layer of sand 12 is reduced or avoided with current
It is lost in.
Filter plate 14 is provided with permeable hole, and water supply stream passes through, and permeable hole size is less than the inserts size of boulder bed, to cobble
Layer forms support, can according to circumstances reduce permeable hole as far as possible, reduces layer of sand 12 and is lost in.
For collecting space 15 for the water after accommodating purification, denitration water exhalant canal 21 is the water out after purification, is backwashed
Intake tunnel 22 is used for the current for providing filter back washing, and sewage space 10 is communicated with backwash exhalant canal 23, for recoiling
Water outlet when washing.It will be appreciated by those skilled in the art that according to circumstances valve can be set in the appropriate location of each pipelined channel, help real
The various functions in existing filter tank.
This filter tank application method, such as can close the valve of backwash intake tunnel 22, open denitration water water outlet and lead to
The valve in road 21, pending sewage enter sewage space 10 from wastewater influent passage 20, then reach haydite layer 11, haydite layer
Pollutant in 11 micropopulation consumption sewage, makes sewage purification；After aging biofilm detachment caused by microbial metabolism, with
Current flow down, and reach layer of sand 12, aging film and other impurities retain filtering by layer of sand 12, obtain relative water purification；Water purification passes through
Filter plate 14, collecting space 15 is reached, is flowed out through denitration water exhalant canal 21.
Opened anti-using the valve of denitration water exhalant canal 21, it is necessary to backwashed, can be closed after a period of time in filter tank
Rinse the valve of intake tunnel 22, the circulation of current from bottom to up.Because the particle diameter of the inserts of layer of sand 12 is small, gap is small, recoil
Wash water stream is quickly through the recoil of the impurity such as aging biomembrane that thoroughly can be retained layer of sand 12 enters sewage space through haydite layer 11
10, finally flowed out from backwash exhalant canal 23.And the haydite 3 of haydite layer 11 is spherical, and particle diameter is relatively large, between particle
Gap it is also bigger, the speed of the backwash current flowed through is slower, and the active biological film of the gap of haydite 3 attachment will not be lost in, instead
After the completion of flushing, filter tank still has very high detergent power.
According to circumstances, valve can also be set in wastewater influent passage 20 and backwash exhalant canal 23, is easy to filter tank to make
With maintenance.
The water intake mode in filter tank can be intake by pipeline into pond, can be preferably the wastewater influent passage 20
Including inlet channel, the inlet channel extends along the inwall of pond body 1 to be laid out, and inlet channel bottom is provided with multiple drain gullies along bearing of trend
200, the drain gully 200 leads to the sewage space 10；The backwash exhalant canal 23 is connected in the wall of pond body 1 and overboard
Mouth less than 200.
As shown in Figure 1：Inlet channel is along one section of raceway groove of the inwall of pond body 1 extension layout, according to circumstances, the section of pond body 1
Can be square, the various ways such as circle, inlet channel extends along the inwall of pond body 1.
Sewage is introduced into inlet channel, under multiple drain gullies 200 of inlet channel bottom stream, allows sewage as far as possible uniform
Enter pond body 1 from diverse location, can also reduce the impact to micropopulation.
Backwash exhalant canal 23 is connected in drain gully below 200, for example, connect the wall of pond body 1 and drain gully 200 with
Lower position, when being backwashed, current, which are overflow to backwash exhalant canal 23, to flow away, and avoid pouring in down a chimney to inlet channel.
The particle diameter and filling thickness of inserts used in this filter tank, it according to circumstances can suitably change, can be preferably, institute
The particle diameter of haydite 3 is stated in 5~7mm, the aperture of haydite hole 31 of haydite 3 is in 1.5~2mm, and the filling thickness of haydite layer 11 is in 1~1.5m；
The inserts of the layer of sand 12 is quartz sand, and its particle diameter is in 1.5~3mm, and the filling thickness of layer of sand 12 is in 0.7~1m；The cobble
The inserts of layer 13 is cobble, and 25~35mm of its particle diameter, the filling thickness of boulder bed 13 is in 0.1~0.3m.
Experiment shows also there is good using effect using following specification inserts：
The particle diameter of haydite 3 is in 6mm, and the aperture of haydite hole 31 of haydite 3 is in 1.2mm, and the filling thickness of haydite layer 11 is in 0.8m；Layer of sand
12 inserts is quartz sand, and its particle diameter is in 1.8mm, and the filling thickness of layer of sand 12 is in 0.5m；The inserts of boulder bed 13 is cobble,
Its particle diameter 20mm, the filling thickness of boulder bed 13 is in 0.2m.
The particle diameter of haydite 3 is in 10mm, and the aperture of haydite hole 31 of haydite 3 is in 3mm, and the filling thickness of haydite layer 11 is in 1.8m；Layer of sand
12 inserts is quartz sand, and its particle diameter is in 3.5mm, and the filling thickness of layer of sand 12 is in 1.5m；The inserts of boulder bed 13 is cobble,
Its particle diameter 45mm, the filling thickness of boulder bed 13 is in 0.5m.
Claims (4)
1. denitrification double layer filter, including pond body (1), it is characterised in that be disposed with pottery from top to bottom in the pond body (1)
Granulosa (11), layer of sand (12), boulder bed (13) and filter plate (14), the filter plate (14) are provided with permeable hole, and permeable hole size
Less than the inserts size of boulder bed (13), the haydite layer (11) is filled with haydite (3), and the haydite (3) is spherical, and is had
There are the haydite hole (31) of insertion, the particle diameter of the haydite (3), and the particle diameter of boulder bed (13) inserts, be all higher than layer of sand
(12) particle diameter of inserts；
Positioned at the space of filter plate (14) below it is collecting space (15) in the pond body (1), collecting space (15) is communicated with denitration
Water exhalant canal (21) and backwash intake tunnel (22), the interior space more than haydite layer (11) of the pond body (1) are dirt
Hydrospace (10), sewage space (10) are communicated with wastewater influent passage (20) and backwash exhalant canal (23), the denitration water
Exhalant canal (21) and backwash intake tunnel (22) are provided with valve.
2. denitrification double layer filter as claimed in claim 1, it is characterised in that the wastewater influent passage (20) includes water inlet
Ditch, the inlet channel extends along pond body (1) inwall to be laid out, and inlet channel bottom is provided with multiple drain gullies (200) along bearing of trend,
The drain gully (200) leads to the sewage space (10)；Backwash exhalant canal (23) connection in pond body (1) wall and
Drain gully (200) is below.
3. denitrification double layer filter as claimed in claim 1, it is characterised in that the haydite (3) is made pottery with two or three
Grain hole (31), the haydite hole (31) passes through the haydite centre of sphere, and perpendicularly crosses each other.
4. denitrification double layer filter as claimed in claim 1, it is characterised in that haydite (3) particle diameter is in 5~7mm, haydite
(3) haydite hole (31) aperture is in 1.5~2mm, and haydite layer (11) filling thickness is in 1~1.5m；The filling of the layer of sand (12)
Expect for quartz sand, its particle diameter is in 1.5~3mm, and layer of sand (12) filling thickness is in 0.7~1m；The inserts of the boulder bed (13)
For cobble, 25~35mm of its particle diameter, boulder bed (13) filling thickness is in 0.1~0.3m；The wastewater influent passage (20),
Backwash exhalant canal (23) is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382126.9U CN206783397U (en) | 2017-04-12 | 2017-04-12 | Denitrification double layer filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720382126.9U CN206783397U (en) | 2017-04-12 | 2017-04-12 | Denitrification double layer filter |
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| Publication Number | Publication Date |
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| CN206783397U true CN206783397U (en) | 2017-12-22 |
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ID=60707296
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| CN201720382126.9U Active CN206783397U (en) | 2017-04-12 | 2017-04-12 | Denitrification double layer filter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623088A (en) * | 2018-01-24 | 2018-10-09 | 湖南内特环保科技有限公司 | A kind of small flow medical waste water processing integrated apparatus and its wastewater treatment method |
-
2017
- 2017-04-12 CN CN201720382126.9U patent/CN206783397U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623088A (en) * | 2018-01-24 | 2018-10-09 | 湖南内特环保科技有限公司 | A kind of small flow medical waste water processing integrated apparatus and its wastewater treatment method |
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