CN202246256U - Reverse-flow type moving bed biological advanced denitrification treatment device - Google Patents
Reverse-flow type moving bed biological advanced denitrification treatment device Download PDFInfo
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- CN202246256U CN202246256U CN2011204158618U CN201120415861U CN202246256U CN 202246256 U CN202246256 U CN 202246256U CN 2011204158618 U CN2011204158618 U CN 2011204158618U CN 201120415861 U CN201120415861 U CN 201120415861U CN 202246256 U CN202246256 U CN 202246256U
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Abstract
The utility model belongs to the technical field of a sewage treatment device, and particularly relates to a reverse-flow type moving bed biological advanced denitrification treatment device which comprises a reactor that is internally provided with a filler cavity; the lower part of the filler cavity is in a cone shape; the filler cavity is internally provided with a water distribution system; a water inlet of the water distribution system is connected with a water inlet pipe; a water inlet of the water inlet pipe is positioned at the upper part of the reactor; the reactor is internally provided with a center gas stripping pipe passing through the filler cavity; openings are respectively arranged at the upper end and the lower end of the center gas stripping pipe; a water inlet pipe is arranged at the opening arranged at the lower end of the center gas stripping pipe; the top of the center gas stripping pipe is provided with a film carrier separator; the top of the center gas stripping pipe extends into the film carrier separator; and the top of the reactor is provided with an effluent weir. The reverse-flow type moving bed biological advanced denitrification treatment device is low in investment and operating cost, good in denitrification effect, capable of continuously running, free from back-flushing, not blocked and simple in operation management.
Description
Technical field
The utility model belongs to technical field of sewage treatment equipment, is specifically related to the biological advanced nitrogen treatment unit of a kind of reverse-flow moving-bed.
Background technology
China still faces a lot of environmental stresss at present; Lake, reservoir, offshore sea waters eutrophication problem are still outstanding; Total amount of sewage discharge still continues to increase; Under the background of energy-saving and emission-reduction; Though the total emission volumn of COD and ammonia nitrogen is downward trend; But the quantity discharged of total nitrogen also excludes the statistical indicator of the environmental aspect communique of country; Though (19821-2005) etc. only restriction is made in the discharging of ammonia nitrogen, " urban wastewater treatment firm pollutant emission standard " (GB18918-2002), " yeast industry pollution discharge standard " (GB 25462-2010), " starch industry pollution discharge standard " (GB 25461-2010) etc. have not only proposed strict requirement to ammonia nitrogen and to total nitrogen like " ammonia synthesizing industry pollution discharge standard " (GB 13458-2001), " brewing industry pollution discharge standard " for the national standard of some present industries, and the solution of eutrophication problem must all be controlled ammonia nitrogen and total nitrogen.No matter therefore be that city domestic sewage or trade effluent will be more and more stricter to the control of this index of total nitrogen.
China's town domestic sewage is handled and has basically all been adopted A/O, the A that possesses the denitrogenation dephosphorizing function now<sup >2</sup>Technologies such as/O, oxidation ditch, CASS, its treat effluent can reach " urban wastewater treatment firm pollutant emission standard " (GB18918-2002) standard (NH of one-level B<sub >3</sub>-N<5mg/>L, T-N<15mgL), reach one-level A standard (NH<sub >3</sub>-N<5mg/>L, T-N<15mgL) need follow-up advanced treatment toward contact; Conventional physico-chemical processes advanced treatment process such as treatment effects such as flocculation sediment, filtration are not very good or the investment working cost is too high, biological cheaply advanced nitrogen can possess wide application prospect; And the treatment process of trade effluent is varied; State of the art varies especially; Especially the starch wastewater of high density, beer waste water, leather-making waste water, pharmacy waste water etc. generally all adopt anaerobism pre-treatment (UASB, IC, AF etc.) and routine biochemistry to handle, and its treat effluent should be able to reach NH<sub >3</sub>-N<15 ~ 25mg/>L, T-N<the standard of 30 ~ 40mgL, and in actual engineering operation, the processing denitrification effect of trade effluent is often not satisfactory, the deep biological denitrogenation technical meaning of therefore developing high efficiency, low cost is unprecedented.
The utility model content
The purpose of the utility model provides a kind of realization WWT and the biological advanced nitrogen treatment unit of the reverse-flow moving-bed of carrier cleansing phase bonded.
The utility model adopts following technical scheme:
The biological advanced nitrogen treatment unit of reverse-flow moving-bed comprises reactor drum, is provided with packing cavity in the reactor drum, and the bottom of packing cavity is taper; Be provided with water distribution system in the packing cavity, the water-in of water distribution system is connected with water inlet pipe, and the water-in of water inlet pipe is positioned at the top of reactor drum; Be provided with the center stripping tube that runs through packing cavity in the reactor drum; The upper and lower end opening of center stripping tube; Stripping tube lower ending opening place, center is provided with inlet pipe, and the top of center stripping tube is provided with the membrane carrier separator, and the top of center stripping tube is stretched in the membrane carrier separator; The top of reactor drum is provided with effluent weir.
Said membrane carrier separator comprises urceolus; The inwall of urceolus is provided with the ring protection circle; Be provided with first step baffle plate in the urceolus, the outer tube inner wall of first step baffle plate below is provided with one or more downward-sloping baffle plates, and the urceolus of first step baffle plate top is provided with the aperture; The outside of position, aperture is provided with a shell on the urceolus, and the bottom of shell is provided with shore pipe.
The below of said water distribution system is provided with the water distribution reflection cone.
Said water distribution system is ring-type, finger-like or dendritic, the perforate down of the water outlet of water distribution system.
The bottom of said packing cavity is provided with evacuated tube.
The exit of inlet pipe extends to 1-2cm in the stripping tube lower ending opening of center, and the import of inlet pipe is positioned at the top of reactor drum, effectively prevents the filler resorption.
Reactor drum in the utility model can be circle, also can be for square, and reactor drum can parallel connection or series connection setting.
When the biological advanced nitrogen treatment unit of the reverse-flow moving-bed of the utility model used, sewage got into water distribution system by water inlet pipe, was discharged by water outlet down; Sewage changes flow direction down through the effect of water distribution reflection cone and upwards flows; Through being filled with the packing cavity of carrier, sewage through in the process of carrier through joining the microbiological deterioration that is attached on the carrier, carry out nitrated or denitrification; Sewage after handling continues to rise, and is finally collected by effluent weir and is discharged by water shoot; Along with constantly carrying out of nitrification and denitrification, carrier surface aged microbial film need clean, and this moment, inlet pipe provided the power of carrier flow; Carrier is got in the stripping tube of center, carrier in the stripping tube of center with bubble, tube wall generation strong collision, the high velocity air in the stripping tube of center tentatively separates microbial film from carrier; Final microbial film and carrier are raised and get in the membrane carrier separator urceolus, and carrier at first bumps with first step baffle plate, to a certain extent the wash-out microbial film; Carrier falls under action of gravity then, continues to bump with downward-sloping baffle plate, and microbial film is again by wash-out; Carrier continues to fall afterwards; Through repeatedly baffle plate collision artifact film basically totally by wash-out, simultaneously carrier landing, with the collision process of baffle plate in also attrition sassafras mutually, microbial film is also fallen by scouring in the process that carrier falls; Final realization microbial film separates with carrier; Microbial film is discharged through the aperture by top-down current, finally get in the shell to be discharged by shore pipe, and the carrier that cleans after upgrading falls in the packing cavity under the effect of own wt; Nitrated, the denitrification of beginning next round, the conical lower portion of packing cavity makes things convenient for the smooth landing of carrier to boring the end.
Can adopt sand grains, haydite, hard coal, garnet, engineering plastics ball etc. as bio-carrier in the packing cavity of the utility model, cultivate microbial film, make in the microbial film of filler adheres and be rich in nitrifier and denitrifying bacteria; Utilize the constructional feature of reactor drum, make water (flow) direction from bottom to top, the filler travel direction from top to bottom; Make bio-carrier continuous flow in reactor drum, carry the power that effect provides carrier continuous flow through gas simultaneously, avoid stopping up; Make microbial film coming off from the bio-carrier simultaneously; Realize biomembranous renewal and get rid of the aged microbial film, avoid the obstruction of reactor drum and the continuous operation of realization response device, need not carry out back flushing.Device replenishes additional carbons such as methyl alcohol, formic acid after using for some time in case of necessity in water inlet, the nitrogen that overcomes numerous bio-denitrification technologies is removed the shortcoming of ability, and can realize the complete sets of equipmentization that middle-size and small-size sewage and trade effluent advanced nitrogen are handled.
The biological advanced nitrogen treatment unit of the reverse-flow moving-bed of the utility model is invested and working cost is low, denitrification effect is good, can move continuously, does not carry out back flushing; Can not stop up, operational management is simple, realizes nitrated, denitrification or nitration denitrification simultaneously through adding source of the gas, carbon source; For city sewage deep treatment; The water outlet total nitrogen can be lower than 2mg/L, and for trade effluent, the water outlet total nitrogen can be lower than 5mg/L.
The purpose of the utility model is to cultivate at carrier surface to be easy to nitrifier and denitrifying bacteria, at first is that microbial film (nitrifier, denitrifying bacteria, anerobes, hold concurrently oxygen bacterium, heterotrophic bacterium, autotrophic bacteria etc.) is attached to carrier surface; Next is to realize nitrifier, denitrifying bacteria, anerobes, the layerings in microbial film such as oxygen bacterium, heterotrophic bacterium, autotrophic bacteria of holding concurrently; Carry the power that effect provides the continuous flow of bio-carrier bed through gas; Avoid stopping up; Microbial film is come off from bio-carrier, realize biomembranous renewal and get rid of the aged microbial film.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the enlarged diagram of the membrane carrier separator in the utility model;
Plat when Fig. 3 is ring-type for water distribution system;
Plat when Fig. 4 is finger-like for water distribution system;
Plat when Fig. 5 is dendritic for water distribution system.
Embodiment
Like Fig. 1, the biological advanced nitrogen treatment unit of the reverse-flow moving-bed shown in 2, comprise reactor drum 7, be provided with packing cavity 6 in the reactor drum 7, the bottom of packing cavity 6 is taper, the bottom of packing cavity 6 is provided with evacuated tube 5; Be provided with water distribution system 3 in the packing cavity 6, the below of water distribution system 3 is provided with water distribution reflection cone 4, and the awl bucket inclination angle of water distribution reflection cone 4 is greater than 55 °, and water distribution reflection cone 4 downward shadow areas are no more than 30% of reactor drum 7 sectional areas; The water-in of water distribution system 3 is connected with water inlet pipe 1, and the water-in of water inlet pipe 1 is positioned at the top of reactor drum 7; Be provided with the center stripping tube 8 that runs through packing cavity 6 in the reactor drum 7, the upper and lower end opening of center stripping tube 8, stripping tube 8 lower ending opening places in center are provided with inlet pipe 12; The exit of inlet pipe 12 extends to 1-2cm in center stripping tube 8 lower ending openings,, the import of inlet pipe 12 is positioned at the top of reactor drum 7; The top of center stripping tube 8 is provided with membrane carrier separator 10; Membrane carrier separator 10 comprises urceolus 20, and the inwall of urceolus 20 is provided with ring protection circle 15, is provided with first step baffle plate 16 in the urceolus 20; Urceolus 20 inwalls of first step baffle plate 16 belows are provided with one or more downward-sloping baffle plates 17; The urceolus 20 of first step baffle plate top 16 is provided with aperture 18, and the outside of 18 positions, aperture is provided with a shell 21 on the urceolus 20, and the bottom of shell 21 is provided with shore pipe 14; The top of center stripping tube 8 is stretched in the urceolus 20 of membrane carrier separator 10, and the outer wall that stretches into the center stripping tube 8 in the urceolus 20 is provided with downward-sloping baffle plate; The top of reactor drum 7 is provided with effluent weir 13, and effluent weir 13 bottoms are provided with water shoot 11.
When the biological advanced nitrogen treatment unit of the reverse-flow moving-bed of the utility model used, sewage got into water distribution system 3 by water inlet pipe 1, was discharged by water outlet down; Sewage changes flow direction down through 4 effects of water distribution reflection cone and upwards flows; Through the packing cavity 6 that is filled with carrier 2, sewage through in the process of carrier 2 through joining the microbiological deterioration that is attached on the carrier 2, carry out nitrated or denitrification; Sewage after handling continues to rise, and is finally collected by effluent weir 13 and is discharged by water shoot 11; Along with constantly carrying out of nitrification and denitrification; The microbial film of carrier 2 surface ag(e)ings need clean, and this moment, inlet pipe 12 provided carrier 2 mobile power, and carrier 2 is got in the center stripping tube 8 by the bottom opening of center stripping tube 8; Carrier 2 in center stripping tube 8 with bubble, tube wall generation strong collision; High velocity air in the center stripping tube 8 tentatively separates microbial film from carrier 2, final microbial film and carrier 2 are raised and get in membrane carrier separator 10 urceolus 20, and carrier 2 bumps with first step baffle plate 16, baffle plate 17; Under the impact effect of flow shear and carrier 2, realize carrier and biomembranous thorough the separation; The microbial film that swims in urceolus 20 tops finally discharge through shore pipe 14, and the carrier 2 after the cleaning renewal falls in the packing cavity 6 under the effect of own wt in entering shell 21 is discharged in aperture 18; Nitrated, the denitrification of beginning next round, the conical lower portion of packing cavity 6 makes things convenient for carrier 2 smooth landings to boring the end.
Claims (6)
1. the biological advanced nitrogen treatment unit of reverse-flow moving-bed comprises reactor drum, and it is characterized in that: be provided with packing cavity in the reactor drum, the bottom of packing cavity is taper; Be provided with water distribution system in the packing cavity, the water-in of water distribution system is connected with water inlet pipe, and the water-in of water inlet pipe is positioned at the top of reactor drum; Be provided with the center stripping tube that runs through packing cavity in the reactor drum; The upper and lower end opening of center stripping tube; Stripping tube lower ending opening place, center is provided with inlet pipe, and the top of center stripping tube is provided with the membrane carrier separator, and the top of center stripping tube is stretched in the membrane carrier separator; The top of reactor drum is provided with effluent weir.
2. the biological advanced nitrogen treatment unit of reverse-flow moving-bed as claimed in claim 1; It is characterized in that: said membrane carrier separator comprises urceolus, and the inwall of urceolus is provided with the ring protection circle, is provided with first step baffle plate in the urceolus; The outer tube inner wall of first step baffle plate below is provided with one or more downward-sloping baffle plates; The urceolus of first step baffle plate top is provided with the aperture, and the outside of position, aperture is provided with a shell on the urceolus, and the bottom of shell is provided with shore pipe.
3. according to claim 1 or claim 2 the biological advanced nitrogen treatment unit of reverse-flow moving-bed, it is characterized in that: the below of said water distribution system is provided with the water distribution reflection cone.
4. the biological advanced nitrogen treatment unit of reverse-flow moving-bed as claimed in claim 3, it is characterized in that: said water distribution system is ring-type, finger-like or dendritic, the perforate down of the water outlet of water distribution system.
5. the biological advanced nitrogen treatment unit of reverse-flow moving-bed as claimed in claim 4, it is characterized in that: the bottom of said packing cavity is provided with evacuated tube.
6. the biological advanced nitrogen treatment unit of reverse-flow moving-bed as claimed in claim 5, it is characterized in that: the exit of inlet pipe extends to 1-2cm in the stripping tube lower ending opening of center, and the import of inlet pipe is positioned at the top of reactor drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158618U CN202246256U (en) | 2011-10-27 | 2011-10-27 | Reverse-flow type moving bed biological advanced denitrification treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204158618U CN202246256U (en) | 2011-10-27 | 2011-10-27 | Reverse-flow type moving bed biological advanced denitrification treatment device |
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| Publication Number | Publication Date |
|---|---|
| CN202246256U true CN202246256U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204158618U Expired - Fee Related CN202246256U (en) | 2011-10-27 | 2011-10-27 | Reverse-flow type moving bed biological advanced denitrification treatment device |
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| CN (1) | CN202246256U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424477A (en) * | 2011-10-27 | 2012-04-25 | 徐洪斌 | Counterflow moving bed biological advanced denitrification processing apparatus |
| CN103241828A (en) * | 2013-05-20 | 2013-08-14 | 郑州大学 | Self-cleaned activated biofilter |
| CN106007174A (en) * | 2016-06-01 | 2016-10-12 | 青岛嘉禾环保工程有限公司 | Pre-separation enhanced nitrogen removal integrated sewage treatment process |
-
2011
- 2011-10-27 CN CN2011204158618U patent/CN202246256U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424477A (en) * | 2011-10-27 | 2012-04-25 | 徐洪斌 | Counterflow moving bed biological advanced denitrification processing apparatus |
| CN103241828A (en) * | 2013-05-20 | 2013-08-14 | 郑州大学 | Self-cleaned activated biofilter |
| CN103241828B (en) * | 2013-05-20 | 2014-10-15 | 郑州大学 | Self-cleaned activated biofilter |
| CN106007174A (en) * | 2016-06-01 | 2016-10-12 | 青岛嘉禾环保工程有限公司 | Pre-separation enhanced nitrogen removal integrated sewage treatment process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120530 Termination date: 20141027 |
|
| EXPY | Termination of patent right or utility model |