CN102826718A - Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system - Google Patents
Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system Download PDFInfo
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- CN102826718A CN102826718A CN2012103398011A CN201210339801A CN102826718A CN 102826718 A CN102826718 A CN 102826718A CN 2012103398011 A CN2012103398011 A CN 2012103398011A CN 201210339801 A CN201210339801 A CN 201210339801A CN 102826718 A CN102826718 A CN 102826718A
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 72
- 230000003647 oxidation Effects 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000005273 aeration Methods 0.000 title claims abstract description 23
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 146
- 239000002351 wastewater Substances 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000011282 treatment Methods 0.000 claims abstract description 26
- 238000004043 dyeing Methods 0.000 claims abstract description 11
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000012546 transfer Methods 0.000 claims abstract description 9
- 238000007639 printing Methods 0.000 claims abstract description 5
- 239000005416 organic matter Substances 0.000 claims abstract 2
- 230000035484 reaction time Effects 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims 1
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002671 adjuvant Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011284 combination treatment Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010297 mechanical methods and process Methods 0.000 description 1
- 230000005226 mechanical processes and functions Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Abstract
本发明公开了一种提高臭氧-曝气生物滤池联合系统氧化效率的方法及装置。方法包括物化-生化处理、管道臭氧氧化处理、一体化臭氧氧化和生物处理各步骤；经物化-生化处理的印染废水先送往清水池调节水量，然后在5-10m的臭氧氧化管道内实现废水难降解有机物的部分氧化，最后送往一体化臭氧-曝气生物滤池继续氧化，并实现生物处理。本发明采用喷射和曝气相结合的臭氧投加方式，同时在氧化管道设置折流板和交叉锯齿带，可大大提高废水和臭氧的传质效率，提高臭氧的氧化效率。此外，通过对臭氧残留浓度与出水色度的实时监控，既可避免臭氧投加量偏高或偏低的现象，也可有效降低废水在臭氧接触室的停留时间，提高系统的处理速率。
The invention discloses a method and a device for improving the oxidation efficiency of an ozone-aerated biological filter united system. The method includes physical-chemical-biochemical treatment, pipeline ozone oxidation treatment, integrated ozone oxidation and biological treatment steps; the printing and dyeing wastewater after physical-chemical-biochemical treatment is first sent to the clear water tank to adjust the water volume, and then the wastewater is realized in the 5-10m ozone oxidation pipeline. The partial oxidation of refractory organic matter is finally sent to the integrated ozone-biological aerated filter for further oxidation and biological treatment. The invention adopts the ozone dosing method combining injection and aeration, and at the same time, baffles and cross sawtooth belts are arranged in the oxidation pipeline, which can greatly improve the mass transfer efficiency of waste water and ozone, and improve the oxidation efficiency of ozone. In addition, real-time monitoring of residual ozone concentration and effluent chromaticity can not only avoid the phenomenon of high or low ozone dosage, but also effectively reduce the residence time of wastewater in the ozone contact chamber and improve the treatment rate of the system.
Description
Technical field
The present invention relates to a kind of method and device that improves ozone-BAF association system oxidation efficiency, specifically relate to a kind of method and device that utilizes ozone, BAF dyeing waste water to be carried out advanced treatment.
Technical background
Dyeing waste water occupies very high ratio in the industrial wastewater discharge total amount, and chroma in waste water is dark, organic concentration is high, saltiness is big, and dye component complicacy and great majority are parent with aromatic hydrocarbons and heterogeneous ring compound in the waste water.Particularly in recent years; Develop rapidly and finishing process in printing and dye-ing development of technology along with dyestuffs industries; Anti-photodissociation, antioxidant and biorefractory organism such as PVA slurry, various New-type adjuvant and finishing composition are by increasing application, and the colourity of dyeing waste water sometimes can be up to more than 4000 times, BOD
5/ COD value but is low to moderate about 20%, and intractability continues to increase.Traditional materialization and biochemical method have been difficult to realize the reuse of dyeing waste water.
Utilization at present is the combined treatment process of ozone oxidation and BAF more widely, can improve the clearance of hardly degraded organic substance to a certain extent, and the reduction chroma in waste water obviously improves effluent quality.But also there is certain shortcoming in existing process integration, and for example: the ozone adding equipment current consumption of patent CN101700944A is big, and BAF needs again aeration to be unfavorable for the saving of cost so that the mikrobe oxygen source to be provided; Patent CN100494103C, patent CN101376556B do not monitor ozone residual concentration, tail water colourity in real time, are unfavorable for improving the utilization ratio of ozone, are unfavorable for shortening the reaction times of ozone; Patent CN101538102A, patent CN201825822U need ozone tail gas is handled, and simultaneously BAF are needed aeration again, increase extra energy consumption.
Summary of the invention
There is the low problem of ozone utilization rate to existing ozone oxidation and BAF combined treatment process, the invention provides a kind of method that can improve ozone-BAF association system oxidation efficiency.
The present invention also provides the device of realizing aforesaid method.
The present invention is achieved through following technical scheme:
A kind of method that improves ozone-BAF association system oxidation efficiency; Comprise materialization-biochemistry processing, pipeline ozone oxide treatment, integrated ozone oxidation and biological treatment; Wherein materialization-biochemistry is handled, integrated ozone oxidation and biological treatment all adopt existing techniques in realizing, pipeline ozone oxide treatment and belong to for innovative point of the present invention with the combination treatment method of integrated ozone-BAF.Be specially: the dyeing waste water of handling through materialization-biochemistry is sent to the clean water basin regulating pondage earlier; Guarantee that waste water is than stable flow rate and pH value;, length realizes the partially oxidation of waste water hardly degraded organic substance then in being the ozone oxidation pipeline of 5-10m; Be sent to integrated ozone-BAF at last and continue oxidation, and realize biological treatment.
Said pipeline ozone oxide treatment is meant at the ozone oxidation pipeline utilizes ejector to realize mixing of ozone and waste water; Said ejector exit is provided with two traverse baffles, is inserted with the intersection saw tooth belt in the said ozone oxidation pipeline, to promote mixing of ozone and waste water, improves mass-transfer efficiency, the oxidation efficiency of raising ozone.Ozone adds the position and is divided into two places, and a place is the front end of ozone oxidation pipeline, through ejector, adopts the mode of spraying; Another place is the bottom at integrated ozone-BAF, adopts the mode of aeration to add ozone.The position that adds of ozone is divided into above-mentioned two places, adopt to spray and mode that aeration combines, can improve the oxidation efficiency of ozone greatly.
In said integrated ozone-BAF, BAF does not need extra installation aerating system that process air is provided, and can directly utilize oxygen that ozone brings into for the mikrobe of biological filter oxygen source to be provided.
The total dosage of said ozone is a 10-20mg/L waste water, and the dosage of said integrated ozone-BAF bottom ozone accounts for 1/3 of total dosage; The colourity that the dosage of said ozone is monitored integrated ozone-BAF water outlet in real time according to supervisory system is regulated; The colourity of said water outlet should be lower than 5 times.
In said integrated ozone-BAF, the reaction times of ozone and waste water is 0.5 ~ 2 hour, and the said reaction times is specifically regulated according to the ozone residual concentration that supervisory system is monitored BAF filter plate water inlet in real time; Control ozone residual concentration is at 0.1 ~ 0.15mg/L.
Realize the device of the inventive method; It is characterized in that, comprise clean water basin, waste water valve, water pump, ejector, long ozone oxidation pipeline, integrated ozone-BAF, ozonizer, ozone valve 61, ozone valve 62 and the supervisory system of 5-10m.Said clean water basin are communicated with ejector via waste water valve, water pump, and ejector is communicated with ozonizer through ozone valve 61, and ejector also is connected with the ozone oxidation pipeline, and the ozone oxidation pipeline is communicated with integrated ozone-BAF; The aeration plate of said integrated ozone-BAF bottom connects via ozone valve 62 and ozonizer; Said supervisory system and ozone valve 61, ozone valve 62, the water outlet that is located at integrated ozone-BAF upper end, the filter plate that is arranged at integrated ozone-BAF middle part are connected.Said supervisory system is monitored filter plate water inlet and integrated ozone-BAF water outlet in real time.
Realize mixing of ozone and waste water at said ejector; Said ejector exit is provided with two traverse baffles, is inserted with the intersection saw tooth belt in the said 5-10m ozone oxidation pipeline, to promote mixing of ozone and waste water, improves mass-transfer efficiency, the oxidation efficiency of raising ozone.The ozone of said integrated ozone-BAF bottom adopts the mode of aeration to drop in the waste water.The aeration aperture of the aeration plate 511 of said integrated ozone-BAF 5 bottoms is smaller or equal to 3mm; Said solarization air cap is towards flowing to relatively with waste water, to improve the mass-transfer efficiency of waste water and ozone.
The present invention compared with prior art has following advantage:
(1) mode that adopts injection and aeration to combine is brought the degree of mixing that increases waste water and ozone through traverse baffle and interior slotting intersection sawtooth simultaneously, improves both mass-transfer efficiency, can improve the oxidation efficiency of ozone greatly.
(2) through automatic monitored control system ozone residual concentration and effluent color dilution are monitored in real time, both can have been avoided ozone dosage phenomenon higher or on the low side, also can effectively reduce the residence time of waste water, improve the treatment rate of system in the ozone exposure chamber.
Description of drawings:
Fig. 1 is the flow chart of steps of the inventive method.
Fig. 2 is the structural representation of apparatus of the present invention.
Fig. 3 is ozone oxidation pipeline configuration figure among the present invention.
Embodiment:
Below be to further specify to of the present invention, rather than limitation of the present invention.
Provide the embodiment of the process method of textile printing and dyeing wastewater advanced treatment and reclamation shown in Figure 1 below.
It is as shown in Figure 1 that the present invention improves the flow chart of steps of method of ozone-BAF association system oxidation efficiency.May further comprise the steps: the dyeing waste water of handling through materialization-biochemistry is sent to the clean water basin regulating pondage earlier; Guarantee that waste water is than stable flow rate and pH value; In the ozone oxidation pipeline of 5-10m, realize the partially oxidation of waste water hardly degraded organic substance then; Be sent to integrated ozone-BAF at last and continue oxidation, and realize biological treatment.
Two places are divided in the position that adds of said ozone: the one, and the front end of 5-10m ozone oxidation pipeline (adopting the mode of spraying); Another is the bottom (adopting the mode of aeration) of integrated ozone-BAF.
The total dosage of said ozone is a 10-20mg/L waste water, and wherein the dosage of integrated ozone-BAF bottom ozone is 1/3 of total dosage; The colourity that the concrete dosage of ozone is monitored integrated ozone-BAF water outlet in real time according to supervisory system is regulated; Said effluent color dilution should be lower than 5 times.
In said integrated ozone-BAF, the reaction times of ozone and waste water is 0.5 ~ 2 hour, and the ozone residual concentration of specifically monitoring BAF filter plate water inlet in real time according to supervisory system is regulated; Said ozone residual concentration is controlled at 0.1 ~ 0.15mg/L.
In said integrated ozone-BAF, BAF need not installed the aerating system oxygen supply, can directly utilize oxygen that ozone brings into for the mikrobe of biological filter oxygen source to be provided.
The device synoptic diagram of realizing the inventive method is as shown in Figure 2, comprises clean water basin 1, waste water valve 2, water pump 3, ejector 4,5-10m ozone oxidation pipeline 7, integrated ozone-BAF 5, ozonizer 6, ozone valve 61, ozone valve 62 and supervisory system.Said clean water basin 1 are communicated to ejector 4 through waste water valve 2, water pump 3, and ejector 4 is communicated with ozonizer 6 through ozone valve 61 in addition, and said ejector 4 also is connected with ozone oxidation pipeline 7.Ozone oxidation pipeline 7 is communicated with integrated ozone-BAF 5; Integrated ozone-BAF 5 is communicated with ozonizer 6 through ozone valve 62; Said supervisory system is connected with ozone valve 61, ozone valve 62 respectively, and filter plate 522 water inlets and 5 water outlets of integrated ozone-BAF are monitored in real time.
Realize mixing of ozone and waste water at said ejector 4; As shown in Figure 3; Ozone oxidation pipeline 7 length are 5-10m; With the ozone oxidation pipeline 7 of ejector 4 ozone import upright position in two traverse baffles 71 are set, in ozone oxidation pipeline 7, be inserted with dismountable intersection saw tooth belt 72 simultaneously, to promote mixing of ozone and waste water; Improve mass-transfer efficiency, improve the oxidation efficiency of ozone.The ozone of integrated ozone-BAF 5 bottoms adopts the mode of aeration to drop in the waste water.Said aeration aperture is smaller or equal to 3mm; Said solarization air cap is towards flowing to relatively with waste water, to improve mass-transfer efficiency.
Illustrate the actual mechanical process of present method and device below.
Certain printing and dyeing mill's comprehensive wastewater, after conventional materialization-biochemistry was handled, waste water ph was 7.1, and water outlet COD is 101.9mg/L, and turbidity is 8.2NTU, and SS is 22.3mg/L, ammonia nitrogen is 7.94mg/L, 61 times of colourities.Practical implementation is following:
(1) from clean water basin 1 waste water that comes out, get into ejectors 4 through waste water valve 2 and water pump 3, contact with ozone at ejector 4, then in ozone oxidation pipeline 7 generation oxidizing reactions, with most of hardly degraded organic substance oxidative degradation in the waste water.In the present embodiment, ozone oxidation pipeline 7 is 8m.With the ozone oxidation pipeline 7 of said ejector 4 ozone import upright position in two traverse baffles 71 are set, a dismountable intersection saw tooth belt 72 is set, to improve the mass-transfer efficiency of ozone and waste water in said ozone oxidation pipeline 7.
(2) directly be sent to integrated ozone-BAF 5 and carry out ozone oxidation and biological treatment from ozone oxidation pipeline 7 waste water that comes out, continuing to destroy the structure of hardly degraded organic substance, and remove pollutents such as COD, ammonia nitrogen and colourity.In integrated ozone-BAF 5, the mode of utilizing aeration is added to the aeration plate 511 of integrated ozone-BAF 5 bottoms with 1/3 ozone, and 51 realize ozone oxidation in the ozone oxidation district.
(3) in integrated ozone-BAF 5; Utilize supervisory system monitoring aeration tank effluent color dilution earlier; If colourity is lower than 5 times; Then reduce the ozone dosage, then increase the ozone dosage through ozone valve 61 and ozone valve 62 if colourity is higher than 5 times through ozone valve 61 and ozone valve 62; Utilize the ozone residual concentration of supervisory system monitoring BAF filter plate 522 water inlets then; If the concentration of ozone is lower than 0.1mg/L; Then shorten the ozone reaction time,, then prolong the ozone reaction time if the ozone residual concentration of filter plate 522 water inlets is higher than 0.15mg/L; If the ozone residual concentration of filter plate 522 water inlet is between 0.1mg/L ~ 0.15mg/L, the reaction times that then remains unchanged.
(4) in this case study on implementation, after 5 oxidations of integrated ozone-BAF and biochemical treatment, COD reduces to 27.9mg/L; Turbidity is reduced to 4.3NTU, and SS reduces to 6.2mg/L, and ammonia nitrogen is reduced to 0.758mg/L; Colourity is reduced to 3.5 times, and the oxidization time of ozone is 57min.
The foregoing description is to the specifying of possible embodiments of the present invention, and this embodiment is not in order to limiting claim of the present invention, and the equivalence that all the present invention of disengaging do is implemented or change, all should be contained in the claim of this case.
Claims (7)
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| CN201210339801.1A CN102826718B (en) | 2012-09-13 | 2012-09-13 | Method and device for improving oxidation efficiency of ozone-aeration biological filter combination system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435218A (en) * | 2013-08-09 | 2013-12-11 | 中持（北京）水务运营有限公司 | Comprehensive emergency treatment method for ozone-BAF (Biological Aerated Filter) |
| CN112661348A (en) * | 2020-12-02 | 2021-04-16 | 苏州清然环保科技有限公司 | Treatment method and treatment system for printing and dyeing wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308159A1 (en) * | 1993-03-15 | 1994-09-22 | Philipp Mueller Gmbh | Process for decreasing the COD load in wastewater |
| JPH07185546A (en) * | 1993-12-27 | 1995-07-25 | Ataka Kogyo Kk | Purifying treatment of sewage |
| CN101050016A (en) * | 2007-01-28 | 2007-10-10 | 大连海事大学 | Method for treating dyeing wastewater in transfer piping by ozone |
| CN101070216A (en) * | 2007-06-18 | 2007-11-14 | 华南理工大学 | Integrated ozone and aeration biological filtering pool water treatment apparatus and method |
| CN101700944A (en) * | 2009-09-16 | 2010-05-05 | 汤苏云 | Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter |
-
2012
- 2012-09-13 CN CN201210339801.1A patent/CN102826718B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4308159A1 (en) * | 1993-03-15 | 1994-09-22 | Philipp Mueller Gmbh | Process for decreasing the COD load in wastewater |
| JPH07185546A (en) * | 1993-12-27 | 1995-07-25 | Ataka Kogyo Kk | Purifying treatment of sewage |
| CN101050016A (en) * | 2007-01-28 | 2007-10-10 | 大连海事大学 | Method for treating dyeing wastewater in transfer piping by ozone |
| CN101070216A (en) * | 2007-06-18 | 2007-11-14 | 华南理工大学 | Integrated ozone and aeration biological filtering pool water treatment apparatus and method |
| CN101700944A (en) * | 2009-09-16 | 2010-05-05 | 汤苏云 | Method for increasing utilization rate of ozone jointly processing waste water with biological aerated filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435218A (en) * | 2013-08-09 | 2013-12-11 | 中持（北京）水务运营有限公司 | Comprehensive emergency treatment method for ozone-BAF (Biological Aerated Filter) |
| CN112661348A (en) * | 2020-12-02 | 2021-04-16 | 苏州清然环保科技有限公司 | Treatment method and treatment system for printing and dyeing wastewater |
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| CN102826718B (en) | 2014-06-04 |
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