CN205500909U - Printing and dyeing wastewater autotrophy denitrification device - Google Patents
Printing and dyeing wastewater autotrophy denitrification device Download PDFInfo
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- CN205500909U CN205500909U CN201620216440.5U CN201620216440U CN205500909U CN 205500909 U CN205500909 U CN 205500909U CN 201620216440 U CN201620216440 U CN 201620216440U CN 205500909 U CN205500909 U CN 205500909U
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Abstract
The utility model provides a printing and dyeing wastewater autotrophy denitrification device belongs to the printing and dyeing wastewater processing technique field. Through autotrophy denitrifying bacteria to is still ortho states sulphur electron donor with iron, with the NO3 of aquatic N restores into N2 and realizes the denitrogenation. The utility model discloses a troilite and sulphur combination are loaded to optimize the ratio, have the denitrogenation efficient, go out water pH and change little advantage. It is fast simultaneously still to have the toggle speed, need not to vaccinate mud, advantages such as back flush cycle length. The circumstances that factory's second grade goes out water TN can be handled according to printing and dyeing wastewater to this device, moves when taking TN to exceed standard, and bring to rest when TN is up to standard, the second grade goes out water and directly crosses over the utility model discloses get into next processing unit or direct the emission, it is nimble to have the method of operation, advantage that the working costs is low.
Description
Technical field
This utility model relates to techniques of Dyeing Wastewater Treatment field, particularly relates to a kind of dyeing waste water autotrophic denitrification nitrogen rejection facility.
Background technology
Textile printing and dyeing is one of industrial pollution control key industry with water saving.Textile printing and dyeing wastewater accounts for the 8% of whole nation industrial wastewater discharge total amount, and wherein COD (COD), ammonia nitrogen discharge capacity account for the heavy polluted industry that 9% and the 3% of whole nation industrial discharge total amount is ranking the 4th.Printing and dyeing are textile product post-treatment operations, be textile industry adapt to and meet consume, the key of economic benefit of getting the market in gear, increase, but printing and dyeing are also textile industries pollutes the heaviest operation, wastewater discharge accounts for the 60-80% of industry wastewater emission amount, is impact and the key link of restriction Development of Textile Industry.
Along with the fast development that China is economic in recent years, water environment pollution situation is increasingly serious, and country proposes requirements at the higher level to textile printing and dyeing industry water prevention and cure of pollution." dyeing entry criteria (revised edition in 2010) " specifies, by 2015, unit industrial added value wastewater discharge reduced by 30% than 2010, and discharge of major pollutant amount declined 10% than 2010." textile dyeing and finishing industrial water pollution thing discharge standard " (GB4287-2012) of new revision not only increases all kinds of pollutant emission limit, and unit product displacement is proposed more strict requirements.Jiangsu Province took the lead in carrying out standard upgrading in the whole nation in 2005, TAI HU AREA printing and dyeing enterprise COD discharge standard is promoted to country's I grade standard by original national II grade standard, performs Jiangsu Province's provincial standard " textile dyeing and finishing industrial water pollution thing discharge standard " (DB32/670-2004).In JIUYUE, 2007, Jiangsu Province has issued and implemented again " TAI HU AREA urban wastewater treatment firm and priority industry industry main Sewage Water Emissions limit value " (DB32/T1072-2007), regulation was from 1 day January in 2008, improve the six big industry wastewater discharge standards such as the urban wastewater treatment firm of Taihu Lake basin, textile dyeing and finishing industry further, Dyeing & Finishing Industry waste water COD and TN discharge standard are respectively increased as 50mg/L and 15mg/L.After new standard promulgation is implemented, treatment of dyeing wastewater factory reduces due to water inlet organic loading, causes denitrifying carbon source not enough, it is difficult to realize TN qualified discharge.
Autotrophic denitrification has that sludge yield is few, is paid close attention to widely without the advantage such as additional carbon, operating cost is low.Sulfur, ferrum combination autotrophic denitrification has that denitrification rate is fast, water outlet pH change is little, operating mode is stable and the advantage such as sludge yield is low, and ferric sufide and brenstone low price, be easily obtained, relatively hydrogen autotrophic denitrification is using and the aspect such as transport more safety and convenient, therefore has wide market application foreground.
Utility model content
This utility model causes, because of heterotrophic denitrification carbon source deficiency, the problem that water outlet TN exceeds standard for treatment of dyeing wastewater factory, it is provided that a kind of dyeing waste water autotrophic denitrification nitrogen rejection facility.This device includes water inlet pipe, water intaking valve, surmount pipe, surmount pipe valve, backwash water inlet pipe, backwash water intaking valve, backwash intake pump, blow-down pipe, atmospheric valve, outlet pipe, outlet valve, backwash outlet valve, backwash outlet pipe and reactor body, wherein, backwash water inlet pipe is connected to bottom reactor body, blow-down pipe is connected to reactor body side lower, water inlet pipe connects with backwash water inlet pipe, make the water in water inlet pipe and backwash water inlet pipe by entering reactor body bottom reactor body, outlet pipe and backwash outlet pipe are connected to reactor body top；Surmounting pipe to be connected on water inlet pipe, surmount the upper setting of pipe and surmount pipe valve, water intaking valve is arranged on water inlet pipe, and water intaking valve is surmounting between pipe and water inlet pipe junction and reactor body and water inlet pipe junction；Installation of relief valve on blow-down pipe；Backwash water intaking valve is set on backwash water inlet pipe, backwash intake pump is set between backwash water intaking valve and reactor body；Outlet valve is set on outlet pipe；Backwash outlet valve is set on backwash outlet pipe；Set gradually filter plate in reactor body from bottom to top and strainer head, troilite packing layer and sulfur packing layer, filter plate and strainer head are used for supporting filler and realizing water distribution uniformity.
This device is with treatment of dyeing wastewater factory secondary effluent for processing object, and reactor body external form is a cylindrical biochemical reactor.The sulfur packing layer top distance away from reactor body outlet accounts for the 10% of reactor body height.The volume ratio of troilite packing layer and sulfur packing layer is 1:5.Troilite packing layer packing material size is 3～5mm, and sulfur content is more than 48%, and iron content is more than 43%；Sulfur packing layer packing material size is 3～5mm, and sulfur content is more than 95%.
Use this device to carry out the method for denitrification denitrogenation and principle be:
In the case for the treatment of of dyeing wastewater factory secondary effluent TN is up to standard, close water intaking valve, backwash water intaking valve and atmospheric valve, open to surmount and surmount pipe valve on pipe, current enter next processing unit or outer row by surmounting pipe directly leap autotrophic denitrification nitrogen rejection facility, autotrophic denitrification device is in idle state, to reduce operating cost；
In the case for the treatment of of dyeing wastewater factory secondary effluent TN exceeds standard, shutoff device surmounts pipe valve, backwash water intaking valve, backwash outlet valve and atmospheric valve, open water intaking valve and water outlet pipe valve, secondary effluent enters reactor body by water inlet pipe, the water inlet entering reactor body first passes through entrance troilite packing layer after filter plate and strainer head uniform water distribution, it is attached to the thiobacillus denitrificans of troilite filling surface with the reduced sulfur in troilite as electron donor, by the NO in sewage3 --N is reduced into N2Realize denitrogenation, reduced sulfur is oxidized to SO simultaneously4 2-.Ferrum in troilite is with Fe2+Form dissolution, utilized by ferrum autotrophic denitrification antibacterial, by the NO in sewage3 --N is reduced into N2Realize denitrogenation, simultaneously by Fe2+It is oxidized to Fe3+。Fe3+It is hydrolyzed into Fe (OH) in neutral sewage3, at Fe (OH)3Coagulating sedimentation effect under can remove SS, colourity and the Organic substance in sewage further.As follows as the reaction equation of the autotrophic denitrification denitrogenation of electron donor using troilite:
6NO3 -+2FeS2+4H2O→3N2+4SO4 2-+2Fe(OH)3+2H+
The sewage then passing through troilite packing layer enters sulfur packing layer, by being attached to the thiobacillus denitrificans of filling surface with sulfur as electron donor, and remaining NO in removing sewage further3 --N, it is ensured that TN is up to standard.Thiobacillus denitrificans is at removing NO3 -While-N, sulfur is oxidized to SO4 2-, and utilize the energy assimilation CO that this reaction discharges2, to synthesize own cells material, it is achieved growing multiplication, as follows as the reaction equation of the autotrophic denitrification denitrogenation of electron donor using sulfur:
NO3 -+1.047S+0.283CO2+0.740H2O→0.056C5H7O2N+0.472N2+1.047SO4 2-+1.094H+
Finally, discharged by the outlet pipe on device top after the treated TN of realization of sewage is up to standard or enter next processing unit.
Run continuously at this device, head loses in the case of increasing, and closes and surmounts pipe valve, atmospheric valve, water intaking valve, outlet valve, opens backwash water intaking valve and backwash outlet valve, and open backwash intake pump, this device is carried out backwash.Wherein, backwashing water is Sewage Plant secondary effluent, and backwashing time is 10～15min, and backwash water outlet enters the total water inlet end of Sewage Plant by backwash outlet pipe.
Having the beneficial effect that of technique scheme of the present utility model:
One, by the accurate proportioning of ferric sufide and brenstone, mixed packing, single troilite packed column reactor can be solved and start the problems such as time length, time of staying length, floor space are big, and single sulfur packed column reactor pH fall is big, the problems such as water outlet pH is too low, have toggle speed fast, it is not necessary to seed sludge, the advantages such as the time of staying is short, and floor space is little；Two, arrange on reactor water inlet pipe and be respectively mounted valve on leap pipe, water inlet pipe and leap pipe, can choose whether to pass through reactor according to the TN situation in secondary effluent flexibly；Three, without additional carbon, operating cost is low, high treating effect, sludge yield are few, backwashing period is long, it is easy to through engineering approaches is applied；Four, in device, microorganism can stand long-time hunger, can quick-recovery treatment effect soon after reruning.
Accompanying drawing explanation
Fig. 1 is dyeing waste water autotrophic denitrification nitrogen rejection facility structural representation of the present utility model；
Fig. 2 is the device starting period of the present utility model removal effect figure to TN.
Wherein: 1-water inlet pipe；2-water intaking valve；3-surmounts pipe；4-surmounts pipe valve；5-backwash water inlet pipe；6-backwash water intaking valve；7-backwash intake pump；8-blow-down pipe；9-atmospheric valve；10-outlet pipe；11-outlet valve；12-backwash outlet valve；13-sends out and flushes out water pipe；14-troilite packing layer；15-sulfur packing layer；16-filter plate and strainer head；17-reactor body.
Detailed description of the invention
For making the technical problems to be solved in the utility model, technical scheme and advantage clearer, it is described in detail below in conjunction with the accompanying drawings and the specific embodiments.
This utility model causes, because of heterotrophic denitrification carbon source deficiency, the problem that water outlet TN exceeds standard for existing treatment of dyeing wastewater factory, it is provided that a kind of dyeing waste water autotrophic denitrification nitrogen rejection facility.
As it is shown in figure 1, be the structural representation of this device.This device includes water inlet pipe 1, water intaking valve 2, surmount pipe 3, surmount pipe valve 4, backwash water inlet pipe 5, backwash water intaking valve 6, backwash intake pump 7, blow-down pipe 8, atmospheric valve 9, outlet pipe 10, outlet valve 11, backwash outlet valve 12, backwash outlet pipe 13 and reactor body 17, wherein, backwash water inlet pipe 5 is connected to bottom reactor body 17, blow-down pipe 8 is connected to reactor body 17 side lower, water inlet pipe 1 connects with backwash water inlet pipe 5, make the water in water inlet pipe 1 and backwash water inlet pipe 5 by entering reactor body 17 bottom reactor body 17, outlet pipe 10 and backwash outlet pipe 13 are connected to reactor body 17 top；Surmounting pipe 3 to be connected on water inlet pipe 1, surmount setting on pipe 3 and surmount pipe valve 4, water intaking valve 2 is arranged on water inlet pipe 1, and water intaking valve 2 is surmounting between pipe 3 and water inlet pipe 1 junction and reactor body 17 and water inlet pipe 1 junction；Installation of relief valve 9 on blow-down pipe 8；Backwash water intaking valve 6 is set on backwash water inlet pipe 5, backwash intake pump 7 is set between backwash water intaking valve 6 and reactor body 17；Outlet valve 11 is set on outlet pipe 10；Backwash outlet valve 12 is set on backwash outlet pipe 13；Filter plate and strainer head 16, troilite packing layer 14 and sulfur packing layer 15 is set gradually from bottom to top in reactor body 17.
Wherein, reactor body 17 is cylindrical biochemical reactor, sulfur packing layer 15 top distance away from reactor body 17 outlet accounts for the 10% of reactor body 17 height, the volume ratio of troilite packing layer 14 and sulfur packing layer 15 is 1:5, troilite packing layer 14 packing material size is 3～5mm, and sulfur content is more than 48%, and iron content is more than 43%, sulfur packing layer 15 packing material size is 3～5mm, and sulfur content is more than 95%.
Embodiment 1: the quick startup of reactor
The assay device that test is used is as it is shown in figure 1, device is with Wuxi treatment of dyeing wastewater factory secondary effluent for processing object.All valves on first shutoff device, then by ferric sufide and brenstone filler 1:5 by volume layering filling, first filling troilite recharges sulfur, and the filler top layer distance away from outlet accounts for the 10% of whole height for reactor.After filler filling, open water intaking valve 2 and outlet valve 11, surmount pipe valve 4, backwash water intaking valve 6, atmospheric valve 9 and backwash outlet valve 12 still to remain turned-off, secondary effluent enters reaction unit by water inlet pipe 1, and sequentially pass through filter plate and strainer head 16, troilite packing layer 14 and sulfur packing layer 15, eventually through arranging outside outlet pipe 10 or entering next processing unit.
Device uses the natural starting mode without seed sludge, and starting period operational factor is: empty bed time of staying 1h, hydraulic load is 14.4m3/(m2D), operational effect influent quality is: TN 9.95mg/L, NO the starting period3 --N is 8.96mg/L, and every day, fetching put Inlet and outlet water, measures its water quality index, and result is as in figure 2 it is shown, device completed to start in 3 days, and hereafter water outlet TN is less than 5mg/L, has good denitrification effect.
Embodiment 2: high water-base fluid dyeing waste water denitrogenation
Continue at embodiment 1 reactor start-up successful subsequent and carry out this test.
Device is with Wuxi treatment of dyeing wastewater factory secondary effluent for processing object, and operational factor is: empty bed time of staying 20min, hydraulic load is 43.2m3/(m2D), water inlet TN is 19.53mg/L, NO3 --N is 17.78mg/L, water outlet TN is 5.93mg/L, TN clearance is 69.7%, one-level A mark and the discharge standard in " TAI HU AREA urban wastewater treatment firm and priority industry industry main Sewage Water Emissions limit value " (DB32/T1072-2007) that water outlet TN is much better than in " urban wastewater treatment firm pollutant emission standard " (GB18918-2002).
Embodiment 3: high water-base fluid simulated wastewater denitrogenation
Continue at embodiment 1 reactor start-up successful subsequent and carry out this test.
Test water inlet is the simulated wastewater of artificial preparation, and operational factor is: empty bed time of staying 20min, hydraulic load is 43.2m3/(m2D), water inlet TN is 25.35mg/L, NO3 --N is 23.43mg/L, water outlet TN be 2.16mg/L, TN clearance be 91.5%, it is achieved that efficient denitrification.
Embodiment 4: high water-base fluid municipal wastewater nitrogen
Continue at embodiment 1 reactor start-up successful subsequent and carry out this test.
Device is with Shenyang municipal sewage plant secondary effluent for processing object, and operational factor is: empty bed time of staying 20min, hydraulic load is 43.2m3/(m2D), water inlet TN is 14.39mg/L, water outlet TN be 1.01mg/L, TN clearance be 93.0%, the IV class water water standard that water outlet TN is better than in " water environment quality standard " (GB3838-2002).
The above is preferred implementation of the present utility model; it should be pointed out that, for those skilled in the art, on the premise of without departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
- null1. a dyeing waste water autotrophic denitrification nitrogen rejection facility，It is characterized in that: include water inlet pipe (1)、Water intaking valve (2)、Surmount pipe (3)、Surmount pipe valve (4)、Backwash water inlet pipe (5)、Backwash water intaking valve (6)、Backwash intake pump (7)、Blow-down pipe (8)、Atmospheric valve (9)、Outlet pipe (10)、Outlet valve (11)、Backwash outlet valve (12)、Backwash outlet pipe (13) and reactor body (17)，Wherein，Backwash water inlet pipe (5) is connected to reactor body (17) bottom，Blow-down pipe (8) is connected to reactor body (17) side lower，Water inlet pipe (1) connects with backwash water inlet pipe (5)，The water in water inlet pipe (1) and backwash water inlet pipe (5) is made to enter reactor body (17) by reactor body (17) bottom，Outlet pipe (10) and backwash outlet pipe (13) are connected to reactor body (17) top；Surmount pipe (3) to be connected on water inlet pipe (1), surmount the upper setting of pipe (3) and surmount pipe valve (4), water intaking valve (2) is arranged on water inlet pipe (1), and water intaking valve (2) is positioned at and surmounts between pipe (3) and water inlet pipe (1) junction and reactor body (17) and water inlet pipe (1) junction；The upper installation of relief valve (9) of blow-down pipe (8)；Backwash water intaking valve (6) is set on backwash water inlet pipe (5), backwash intake pump (7) is set between backwash water intaking valve (6) and reactor body (17)；Outlet valve (11) is set on outlet pipe (10)；Backwash outlet valve (12) is set on backwash outlet pipe (13)；Filter plate and strainer head (16), troilite packing layer (14) and sulfur packing layer (15) is set gradually from bottom to top in reactor body (17).
- Dyeing waste water autotrophic denitrification nitrogen rejection facility the most according to claim 1, it is characterised in that: described reactor body (17) is cylinder.
- Dyeing waste water autotrophic denitrification nitrogen rejection facility the most according to claim 1, it is characterised in that: described sulfur packing layer (15) top distance away from reactor body (17) outlet accounts for the 10% of reactor body (17) height.
- Dyeing waste water autotrophic denitrification nitrogen rejection facility the most according to claim 1, it is characterised in that: the volume ratio of described troilite packing layer (14) and sulfur packing layer (15) is 1:5.
- Dyeing waste water autotrophic denitrification nitrogen rejection facility the most according to claim 1, it is characterised in that: described troilite packing layer (14) packing material size is 3～5mm, and sulfur content is more than 48%, and iron content is more than 43%.
- Dyeing waste water autotrophic denitrification nitrogen rejection facility the most according to claim 1, it is characterised in that: described sulfur packing layer (15) packing material size is 3～5mm, and sulfur content is more than 95%.
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| CN201620216440.5U CN205500909U (en) | 2016-03-21 | 2016-03-21 | Printing and dyeing wastewater autotrophy denitrification device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621608A (en) * | 2016-03-21 | 2016-06-01 | 北京科技大学 | Printing and dyeing wastewater autotrophic denitrification device and method |
| CN108503026A (en) * | 2018-04-19 | 2018-09-07 | 中国矿业大学 | City secondary effluent sulfenyl matter recycles autotrophic denitrification method |
| CN110746036A (en) * | 2019-09-29 | 2020-02-04 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
-
2016
- 2016-03-21 CN CN201620216440.5U patent/CN205500909U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105621608A (en) * | 2016-03-21 | 2016-06-01 | 北京科技大学 | Printing and dyeing wastewater autotrophic denitrification device and method |
| CN108503026A (en) * | 2018-04-19 | 2018-09-07 | 中国矿业大学 | City secondary effluent sulfenyl matter recycles autotrophic denitrification method |
| CN108503026B (en) * | 2018-04-19 | 2021-07-27 | 中国矿业大学 | Urban secondary effluent sulfur matrix circulating autotrophic nitrogen removal method |
| CN110746036A (en) * | 2019-09-29 | 2020-02-04 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
| CN110746036B (en) * | 2019-09-29 | 2022-04-19 | 郑州大学 | Low-carbon-source sewage autotrophic denitrification deep denitrification device and method |
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Granted publication date: 20160824 Termination date: 20190321 |