CN103641257B - Method and the device of ozone order of adding in microbubble ozone-coagulation-air-float technology can be changed - Google Patents
Method and the device of ozone order of adding in microbubble ozone-coagulation-air-float technology can be changed Download PDFInfo
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Abstract
Change a method for ozone order of adding in microbubble ozone-coagulation-air-float technology, according to raw water quality characteristic, switched by system pipeline, realize the change of ozone order of adding, after namely adding ozone and coagulation before coagulation, add the phase co-conversion of ozone, when containing a large amount of non-humic solutes class material in former water, ozone is added before adopting coagulation, when containing a large amount of Humus material in former water, ozone is added after adopting coagulation, invention also provides a kind of device changing ozone order of adding in microbubble ozone-coagulation-air-float technology, by the switching of two-way arm on return line, realize the change of ozone order of adding, namely the phase co-conversion of ozone is added after adding ozone and coagulation before coagulation, the present invention is by microbubble ozone oxidation, coagulation and dissolved air flotation achieve the efficient advanced treatment of sewage, the order that can add according to the difference change ozone of raw water quality characteristic, advanced treatment of wastewater is made to have more specific aim, ensure the removal of organism and suspended substance.
Description
Technical field
The invention belongs to advanced treatment of wastewater technical field, relate to advanced treatment of wastewater technology, be specifically related to a kind of method and the device that change ozone order of adding in microbubble ozone-coagulation-air-float technology.
Background technology
Reuse of wastewater is one of main path alleviating urban water shortage, reuse of wastewater technology conventional is at present based on " coagulation+precipitation+filtration " as the common process for the treatment of scheme, its main purpose removes remaining suspension thing in water secondary treatment of sewage treatment plant and organism, but not obvious for the removal effect of the latter, therefore can introduce ozone to improve treatment process to organic clearance in advanced treatment process.But traditional " ozone oxidation+coagulation+precipitation+filtration " complex process is tediously long, floor space is large, Ozone Gas Mass Transfer Efficiency is low.Meanwhile, large quantity research shows, when containing a large amount of non-humic solutes class material in secondary effluent, introducing ozone and being oxidized the organism in water, be i.e. ozone pre-oxidation, will promote the removal effect of follow-up coagulation process before coagulation process.But time in secondary effluent containing a large amount of Humus material, can make Humus organism open loop chain rupture, molecular weight reduces, and has a negative impact, now need to add ozone after coagulation process, i.e. ozone rear oxidation to follow-up coagulation process.Therefore, be necessary to develop a kind of integrated short route sewage water advanced treatment apparatus that can change ozone order of adding for the problems referred to above, the problems such as this device is tediously long to solution traditional technology complexity, floor space is large, mass-transfer efficiency is low are significant, the order that simultaneously can add according to the different qualities change ozone of secondary effluent, makes treatment effect reach best.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of the present invention is to provide a kind of method and the device that change ozone order of adding in microbubble ozone-coagulation-air-float technology, the problems such as traditional technology complexity is tediously long, floor space is large can be solved, the change of ozone order of adding can be realized simultaneously according to raw water quality, make advanced treatment of wastewater have more specific aim.
In order to achieve the above object, the technical solution used in the present invention is:
Change a method for ozone order of adding in microbubble ozone-coagulation-air-float technology, according to raw water quality characteristic, switched by system pipeline, realize the change of ozone order of adding, after namely adding ozone and coagulation before coagulation, add the phase co-conversion of ozone.
When containing a large amount of non-humic solutes class material in former water, before adopting coagulation, adding ozone, when containing a large amount of Humus material in former water, after adopting coagulation, adding ozone.
Invention also provides a kind of device changing ozone order of adding in microbubble ozone-coagulation-air-float technology, comprise raw water box 1, it is characterized in that, the water outlet of raw water box 1 connects 2# dissolving 23 successively, coagulant dosage mouth 3, raw water pump 2 and hydraulic mixer 4, connect umbrella mixing tank 11 subsequently, the ozone that ozonizer 17 produces is after air dissolved pump 8, be divided into two-way, connect raw water box 1 respectively to export and 1# dissolving 7, and 3# valve 26 and 2# valve 25 are set respectively, the road connecting 1# dissolving 7 connects umbrella mixing tank 11, umbrella mixing tank 11 is positioned at air flotation separator 15, the water outlet of air flotation separator 15 is discharged through rising pipe 20, part water outlet enters air dissolved pump 8 through return line 21 and mixes with ozone.
Described air flotation separator 15 comprises umbrella mixing tank 11, umbrella mixing tank 11 is positioned at bottom the zone of action 12 of tubular, zone of action 12 is arranged in disengaging zone 14, the bottom of disengaging zone 14 is provided with perforation header 13, top is the scum silica frost district 19 of taper, the cone top part in scum silica frost district 19 connects scum pipe 16, and the rising pipe 20 of air flotation separator 15 connects perforation header 13.
Another branch road of rising pipe 20 is provided with the magnetic valve 9 of tie-time rly. 10.
The outlet of described ozonizer 17 connects pressure-reducing cushioning device 22 by ozone tail pipe 18, and the outlet of pressure-reducing cushioning device 22 is connected to air dissolved pump 8 and on connection line, arranges 1# valve 24.
According to above device:
When adding ozone before adopting coagulation, open valve 26, valve-off 25, the ozone produced by ozonizer 17 is after air dissolved pump 8, can with former water at 2# dissolving 23 forward slip value, ozone oxidation reaction is there is in 2# dissolving 23, unsaturated, larger molecular organics are oxidized to small molecules, saturated organism, dosing coagulant in water subsequently after ozonize, remove by the organism after ozone oxidation and suspended substance, finally enter in air flotation separator 15 and carry out solid-liquid separation, part water outlet can be mixed into next circulation through air dissolved pump 8 and ozone;
When adding ozone after adopting coagulation, open valve 25, valve-off 26, former water and coagulating agent are after hydraulic mixer 4 mixes, Humus material in water is taken off and surely forms flco, now, the ozone gas that ozonizer 17 produces mixes through the water of air dissolved pump 8 after coagulation, enter air flotation separator 15, there is oxidizing reaction in zone of action 12, remove difficult-to-condense organism in water, realize solid-liquid separation in disengaging zone 14, part water outlet mixes with ozone through air dissolved pump 8, enters next circulation through 1# dissolving 7.
The scum silica frost produced in disengaging zone, through after a while, is adopted automatic sludge discharge technology, is discharged by scum pipe.
To sum up, by the switching of two-way arm on return line 21, the change of ozone order of adding can be realized, after namely adding ozone and coagulation before coagulation, add the phase co-conversion of ozone.
Compared with prior art, the present invention has the following advantages:
1, advanced treatment of wastewater has more specific aim.
2, better removal is all had to organism and suspension pollutent.
3, the residence time is short, and floor space is little.
4, adopt microbubble ozone to be oxidized, improve the mass-transfer efficiency of ozone.
5, adopt automatic sludge discharge, running maintenance is simple.
Therefore, with in the past tradition " ozone oxidation+coagulation+precipitation+filtration " technique compared with, the invention solves the problems such as traditional technology complexity is tediously long, floor space is large, Ozone Gas Mass Transfer Efficiency is low, and the adjustment of ozone order of adding can be carried out according to the former water of different quality characteristic, convenient and simple for operation, treatment effect is good.The control of this invention to organism in advanced treatment of wastewater and suspended substance has great importance.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention schematic diagram.
Embodiment
Below by accompanying drawing, technical scheme of the present invention is described in further detail, but the invention is not restricted to these embodiments.
As shown in Figure 1, a kind of microbubble ozone-coagulation-air-floating integral unit changing ozone order of adding, comprise raw water box 1, the water outlet of raw water box 1 connects 2# dissolving 23 and coagulant dosage mouth 3 successively, raw water pump 2 and hydraulic mixer 4, connect umbrella mixing tank 11 subsequently, the ozone that ozonizer 17 produces is after air dissolved pump 8, be divided into two-way, connect raw water box 1 respectively to export and 1# dissolving, and 3# valve and 2# valve are set respectively, the road connecting 1# container tube connects umbrella mixing tank 11, umbrella mixing tank 11 is positioned at air flotation separator 15, the water outlet of air flotation separator 15 is discharged through rising pipe 20, part water outlet enters air dissolved pump 8 through return line 21 and mixes with ozone, another branch road of rising pipe 20 is provided with the magnetic valve 9 of tie-time rly. 10.The outlet of ozonizer 17 connects pressure-reducing cushioning device 22 by ozone tail pipe 18, and the outlet of pressure-reducing cushioning device 22 is connected to air dissolved pump 8 and on connection line, arranges 1# valve 24.
Wherein air flotation separator 15 comprises umbrella mixing tank 11, umbrella mixing tank 11 is positioned at bottom the zone of action 12 of tubular, zone of action 12 is arranged in disengaging zone 14, the bottom of disengaging zone 14 is provided with perforation header 13, top is the scum silica frost district 19 of taper, the cone top part in scum silica frost district 19 connects scum pipe 16, and the rising pipe 20 of air flotation separator 15 connects perforation header 13, and perforation header 13 is equipped with some Φ 10 apertures.
1# dissolving 7 and 2# dissolving 23 operating pressure are 0.3MPa, and the practical situation that the time of the time relay 10 can produce according to scum silica frost regulate.
The order of adding of ozone can be changed by 2# valve 25 and the opening and closing of 3# valve 26 according to the difference of raw water quality.
When in former water containing a large amount of non-humic solutes class material time, utilize said apparatus to carry out the flow process of ozone pre-oxidation advanced treatment of wastewater as follows:
1. open 3# valve 26, close 2# valve 25;
2. the former water in raw water box 1 and dissolved air water have mixed the contact of pollutent and ozone in 2# dissolving 23, dosing coagulant 3 before raw water pump 2 subsequently, enter under the effect of raw water pump 2 again in hydraulic mixer 4, in hydraulic mixer 4, stop the time of about 30 seconds and mixed fully, completing coagulation or the breakdown of emulsion process of pollutent;
3. refluxed by return line 21 and sucked by air dissolved pump 8 in the water part of technique, and the ozonized air produced by ozonizer 17 pressure in pressure-reducing cushioning device 22 is stablized, air dissolved pump 8 is entered under the suction function that air dissolved pump produces, mixing wastewater with air is carried out with recirculation water, in 2# dissolving 23, obtain stable pressure, and mix with former water;
4. after hydraulic mixer 4, water after same ozone, coagulating agent effect enters zone of action 12 by the umbrella mixing tank 11 bottom air flotation separator 15, and a large amount of micro-bubble discharged by dissolved air water and the pollutent in water carry out contacting the materializing procedures such as wetting and adhesion;
5. behind zone of action 12, current enter in disengaging zone 14, carry out solid-liquid separation, the air float body that bubble absorption pollutent is formed enters scum silica frost district 19 under the effect of buoyancy, and process water by the outer row of the perforation header 13 bottom air flotation separator 15, wherein part effluent recycling experiences treating processes again;
6. adopt totally-enclosed automatic sludge discharge technology, magnetic valve 9 on rising pipe is controlled by the time relay 10, time switch, when current rise to after top dross overflowed, magnetic valve 9 is opened, and after process, water is discharged, air flotation separator 15 water level inside constantly declines, automatically close at the time rear electromagnetic valve 9 through setting, liquid level starts again to rise, and carries out deslagging again.
When in former water containing a large amount of Humus material time, utilize said apparatus to carry out the step of ozone rear oxidation advanced treatment of wastewater as follows:
1. open 2# valve 25, close 3# valve 26;
2. the dosing coagulant 3 before raw water pump 2 of the former water in raw water box 1, then enter under the effect of raw water pump 2 in hydraulic mixer 4, in hydraulic mixer 4, stop the time of about 30 seconds and mixed fully, completing coagulation or the breakdown of emulsion process of pollutent;
3. refluxed by return line 21 and sucked by air dissolved pump 8 in the water part of technique, and the ozonized air produced by ozonizer 17 pressure in pressure-reducing cushioning device 22 is stablized, air dissolved pump 8 is entered under the suction function that air dissolved pump 8 produces, mixing wastewater with air is carried out with recirculation water, in 1# dissolving 7, obtain stable pressure, enter air flotation separator 15;
4. after hydraulic mixer 4, together zone of action 12 is entered by the umbrella mixing tank 11 bottom air flotation separator 15 with the former water of coagulating agent effect and dissolved air water, and a large amount of micro-bubble discharged by dissolved air water and the pollutent in water carry out contacting the materializing procedures such as wetting and adhesion, the ozone simultaneously in bubble also starts to play its oxygenizement;
5. behind zone of action 12, current enter in disengaging zone 14, carry out solid-liquid separation, the air float body that bubble absorption pollutent is formed enters scum silica frost district 19 under the effect of buoyancy, and process water by the outer row of the perforation header 13 bottom air flotation separator 15, wherein part effluent recycling experiences treating processes again;
6. adopt totally-enclosed automatic sludge discharge technology, magnetic valve 9 on rising pipe is controlled by the time relay 10, time switch, when current rise to after top dross overflowed, magnetic valve 9 is opened, and after process, water is discharged, air flotation separator water level inside constantly declines, automatically close at the time rear electromagnetic valve 9 through setting, liquid level starts again to rise, and carries out deslagging again.
Claims (5)
1. one kind can change the method for ozone order of adding in microbubble ozone-coagulation-air-float technology, it is characterized in that, according to raw water quality characteristic, switched by system pipeline, realize the change of ozone order of adding, after namely adding ozone and coagulation before coagulation, add the phase co-conversion of ozone, when containing a large amount of non-humic solutes class material in former water, adding ozone before adopting coagulation, when containing a large amount of Humus material in former water, after adopting coagulation, adding ozone.
2. one kind can change the device of ozone order of adding in microbubble ozone-coagulation-air-float technology, comprise raw water box (1), it is characterized in that, the water outlet of raw water box (1) connects 2# dissolving (23) successively, coagulant dosage mouth (3), raw water pump (2) and hydraulic mixer (4), connect umbrella mixing tank (11) subsequently, the ozone that ozonizer (17) produces is after air dissolved pump (8), be divided into two-way, connect raw water box (1) outlet and 1# dissolving (7) respectively, and 3# valve (26) and 2# valve (25) are set respectively, the road connecting 1# dissolving (7) connects umbrella mixing tank (11), umbrella mixing tank (11) is positioned at air flotation separator (15), the water outlet of air flotation separator (15) is discharged through rising pipe (20), part water outlet enters air dissolved pump (8) through return line (21) and mixes with ozone.
3. device according to claim 2, it is characterized in that, described air flotation separator (15) comprises umbrella mixing tank (11), umbrella mixing tank (11) is positioned at the bottom, zone of action (12) of tubular, zone of action (12) is arranged in disengaging zone (14), the bottom of disengaging zone (14) is provided with perforation header (13), top is the scum silica frost district (19) of taper, the cone top part in scum silica frost district (19) connects scum pipe (16), and the rising pipe (20) of air flotation separator (15) connects perforation header (13).
4. device according to claim 2, is characterized in that, another branch road of rising pipe (20) is provided with the magnetic valve (9) of tie-time rly. (10).
5. device according to claim 2, it is characterized in that, the outlet of described ozonizer (17) connects pressure-reducing cushioning device (22) by ozone tail pipe (18), and the outlet of pressure-reducing cushioning device (22) is connected to air dissolved pump (8) and on connection line, arranges 1# valve (24).
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| CN104326522B (en) * | 2014-11-05 | 2015-12-09 | 西安建筑科技大学 | A kind of multistage ozone air-float integrated apparatus |
| CN105130031B (en) * | 2015-08-19 | 2017-08-01 | 西安建筑科技大学 | A kind of low-power membrane ozone air-float integrated apparatus |
| CN106495370B (en) * | 2016-12-06 | 2019-09-06 | 西安建筑科技大学 | A kind of electrolysis inducing ozone air-floating integral unit |
| CN107324545A (en) * | 2017-08-18 | 2017-11-07 | 西安建筑科技大学 | A kind of method for preventing that scum silica frost is precipitated during ozone air-float |
| CN110240325A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | The air-floating apparatus in changeable water inlet direction |
| CN110240323A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | The air-floating apparatus of hydraulic disturbance is provided |
| CN110240326A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | Air bearing and the coupling integrated device of precipitating |
| CN110240324A (en) * | 2019-06-28 | 2019-09-17 | 西安建筑科技大学 | Air-floating apparatus with oil-water separating function |
| CN110902875A (en) * | 2019-11-19 | 2020-03-24 | 西安威尔电子有限责任公司 | Oil-gas field produced water treatment system and method based on ozone air floatation device |
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Effective date of registration: 20220302 Address after: 721013 No. 1, north section of Fenghuang Sixth Road, high tech Development Zone, Baoji City, Shaanxi Province Patentee after: SHAANXI URSTAR ENVIRONMENTAL SCIENCE AND TECHNOLOGY Co.,Ltd. Address before: 710055 No. 13, Yanta Road, Shaanxi, Xi'an Patentee before: XIAN University OF ARCHITECTURE AND TECHNOLOG |