CN104030534A - Activated sludge water purification reactor and application thereof - Google Patents
Activated sludge water purification reactor and application thereof Download PDFInfo
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- CN104030534A CN104030534A CN201410303194.2A CN201410303194A CN104030534A CN 104030534 A CN104030534 A CN 104030534A CN 201410303194 A CN201410303194 A CN 201410303194A CN 104030534 A CN104030534 A CN 104030534A
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- active sludge
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Abstract
The invention discloses an activated sludge water purification reactor and a method for purifying sewage by using the reactor. The activated sludge water purification reactor comprises an anoxic region, a main reaction region and a united radiation chamber, wherein a water channel is arranged between the anoxic region and the main reaction region, the other water channel is arranged between the main reaction region and the united radiation chamber, and the water channels are provided with valves; the united radiation chamber is internally provided with an ultrasonic radiation system and an ultraviolent radiation system; the ultrasonic radiation system comprises an ultrasonic generator and an ultrasonic converter; the ultraviolent radiation system comprises an ultraviolet generator and an ultraviolet converter; the ultrasonic converter and the ultraviolet converter are respectively connected with the ultrasonic generator and the ultraviolet generator. The activated sludge water purification reactor disclosed by the invention is low in construction cost which can be reduced by 20-30% due to the omittance of a primary sedimentation tank, a secondary sedimentation tank and sludge return equipment. The activated sludge water purification reactor is simple in process flow, compact in layout, small in floor area and applicable to a residential quarter or community.
Description
Technical field
The present invention relates to a kind of active sludge water purification reactor and application thereof.
Background technology
Increasingly serious along with environmental pollution especially water pollution form, the problems such as drinking water quality problem receives much concern, and the tap water that is transported to each community, community after cities and towns Zhong Jing sewage work processing at present still exists chlorion to remove thoroughly, content of microorganisms exceeds standard.For response " energy-saving and emission-reduction " 12 " planning " is about the call of " town domestic sewage treatment facility construction project ", an invention for the city domestic sewage treating plant that purification efficiency is high, floor space is little, cost is moderate, is of great practical significance.
In sewage disposal, it is large that traditional active sludge sewage water treatment method has treatment capacity, and raw material is easy to get, and to solvability easily biodegradable organics processing efficiency advantages of higher, extensively adopted at present by a lot of sewage works.But traditional technology is still having the following disadvantages aspect the efficiency, thoroughness and the energy conservation that purify: first, when the change of water quality of water inlet is large, or while containing hard-degraded substance, the biological treatment effect of traditional active sludge treatment unit is often not good; Secondly,, in traditional technology, in the time that being dewatered, active sludge mostly adopts mechanical mode, because solid particulate in active sludge is moisture stable, mud-water separation difficulty, thereby dehydrating effect is very poor, and the mud of high-moisture enters into follow-up drying process, will inevitably cause a large amount of heat wastes; The 3rd, sewage disposal device floor space is large, causes certain space waste.
Summary of the invention
To the object of the invention is the defect existing in prior art in order solving, to provide a kind of volume little and can effectively improve the device of wastewater purifying efficiency.
In order to achieve the above object, the invention provides a kind of active sludge water purification reactor, comprise aerobic area, main reaction region and associating radiation chamber; Aerobic area is with main reaction region, main reaction region and combine between radiation chamber and be equipped with aquaporin, and aquaporin place is provided with valve; In associating radiation chamber, be provided with Ultrasonic Radiation system and UV radiation system; Ultrasonic Radiation system comprises ultrasonic generator and ultrasonic transducer; UV radiation system comprises ultraviolet generator and ultraviolet transmodulator; Ultrasonic transducer, ultraviolet transmodulator are connected with ultrasonic generator, ultraviolet generator respectively.
Wherein, the volume of aerobic area accounts for 5% of active sludge water purification reactor cumulative volume.
Active sludge water purification reactor of the present invention also comprises PLC; Described valve is electrically operated valve; PLC is connected with electrically operated valve, ultrasonic generator, ultrasonic transducer, ultraviolet generator, ultraviolet transmodulator respectively.
Further improvement of the present invention is: on associating radiation chamber, be respectively equipped with sewage inlet, sewage outlet, activated sludge inlet and active sludge outlet.
Above-mentioned active sludge water purification reactor also comprises gets mud mechanical manipulator and sludge pump; PLC respectively with get mud mechanical manipulator, sludge pump is connected.
The present invention also provides the above-mentioned active sludge water of a kind of employing purification reactor to dirty water purification method, and its step is as follows:
(1) pretreatment stage: first sewage is removed to larger floating matter and suspended substance through grid and equalizing tank;
(2) water inlet-hold concurrently the oxygen stage: gravity flow enters the aerobic area of described active sludge water purification reactor, stops 0.3-0.5h;
(3) water inlet-aeration phase: open the aquaporin valve between aerobic area and main reaction region, carry out periodicity aeration when water inlet, carry out biological degradation in main reaction region; In biodegradation process, from main reaction region, capture active sludge and enter in associating radiation chamber to carry out ultrasonication, active sludge after treatment is sent back in main reaction region again; The ultrasonic frequency of described ultrasonication is 21kHz, and the sound intensity is 0.2-0.3W/cm
2, the treatment time is 10-15min; The crawl frequency of described active sludge is the active sludge that captures 8-10kg every 20min;
(4) water inlet-precipitate phase: stop aeration, staticly settle and make mud-water separation, time of repose is 90min; This stage does not stop into water, and carries out the ultrasonication of the active sludge in step (3) simultaneously;
(5) bleeding stage: open main reaction region and the aquaporin valve of combining between radiation chamber, by through in the water of rough purification passes into associating radiation chamber simultaneously after ultrasonic wave and ultraviolet radiation treatment, through quartz sand and activated carbon filtration; Described ultrasonic wave and ultraviolet radiation treatment time are 45min; Described ultrasonic frequency is 24kHz, and power is 90W, and described uv-radiation predominant wavelength is 254nm;
(6) the subsequent disposal stage: the active sludge in main reaction region is first transported in associating radiation chamber through ultrasonication, and it is pending that mud after treatment is transported to sludge thickener etc.; Described ultrasonic frequency is 20-30kHz, and the sound intensity is 400W/m
2, ultrasonic time is 2-4min.
Wherein, while carrying out periodicity aeration in step (3), control dirty oxygen in water in described main reaction region and be not more than 2.5mg/L.The crawl of active sludge is controlled and is got mud mechanical manipulator and carry out by PLC; Aquaporin valve in described step (3) and step (5) all adopts electrically operated valve, and by PLC trip switch; Ultrasonic wave and ultraviolet radiation treatment control Ultrasonic Radiation system by PLC respectively and UV radiation system realizes.
Above-mentioned PLC measures the content of described reaction tank content by ultrasonic transducer; When reaction tank content height reach pond dark 2/3 time, carry out the active sludge ultrasonication of step (3).
The present invention has the following advantages compared to existing technology:
1, active sludge water purification reactor construction cost of the present invention is low, and owing to having saved primary sedimentation pond, secondary sedimentation basins and sludge reflux equipment, construction cost can save 20%～30%.Technical process is succinct, compact in design, and floor space is little, is adapted at using in residential quarter or community.
2, active sludge water purification reactor economic operating cost of the present invention, because aeration is periodic, dissolved oxygen concentration in the main reaction region of reactor also changes, precipitate phase and bleeding stage dissolved oxygen reduce, while restarting aeration, oxygen concentration gradient is large, and transfer efficiency is high, energy-saving effect is remarkable, and working cost saves 10%～30%.
3, adopt active sludge water purification reactor of the present invention to carry out sewage purification, organic removal rate is high, and effluent quality is good, can not only effectively remove organic carbon source pollutent in sewage, and has good Nitrogen/Phosphorus Removal; Simultaneously after ultra-violet sterilization water quality apparently higher than ordinary tap water.
4, active sludge water purification management of the present invention is simple, reliable.Technical process is controlled automatically by PLC sequence controller, does not need artificial participation, and because discontinuous mud is sent outside, has reduced the possibility that sludge bulking occurs.
5, active sludge water purification reactor level of automation of the present invention is high, controls easyly, and operation is efficient.
6, sludge dewatering property improvement, is convenient to further processing, reduces subsequent disposal energy consumption.
Brief description of the drawings
Fig. 1 is the structural representation of active sludge water purification reactor of the present invention;
Fig. 2 is the process flow sheet that adopts active sludge water purification reactor of the present invention to carry out sewage purification;
Fig. 3 is the structural representation of combining radiation chamber in Fig. 1.
In figure, 1-aerobic area, 2-main reaction region, 3-combines radiation chamber, 4-aquaporin, 5-quantitative mud mechanical manipulator, 6-sludge pump, 7-ultrasonic generator, 8-ultrasonic transducer, 9-ultraviolet generator, 10-ultraviolet ray transmodulator, 11-sewage inlet, 12-sewage outlet, 13-activated sludge inlet, the outlet of 14-active sludge.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
Active sludge water purification reactor of the present invention is made up of 3 regions, i.e. aerobic area 1, main reaction region 2 and associating radiation chamber 3, as shown in Figure 1.
1, aerobic area 1 is for being arranged on the little volume area of reactor front end, and volume is about 5% of reactor cubic capacity, and hydraulic detention time is 0.3～0.5h, conventionally under the condition of oxygen of holding concurrently, moves.Aerobic area can not only change and play shock absorption the influent quality water yield, can also promote further release and the intensified anti-nitrated effect of phosphorus.Between aerobic area 1 and main reaction region 2, be provided with aquaporin, aquaporin place is provided with electrically operated valve.
2, main reaction region is the main place of removing nutritive substance, and it is active sludge that internal main is wanted functional mass.Main reaction region adopts periodically aeration mode, conventionally control dissolved oxygen DO at 0mg/L ~ 2.5mg/L, make in main reaction region solution all the time in good oxygen condition, active sludge inside is in anoxic condition, dissolved oxygen is restricted to the transmission in mud flco, and nitric nitrogen is by unrestricted to the transmission of main body solution in mud, make main reaction region that the absorption of nitrated, denitrification and phosphorus occur simultaneously.Main reaction region 2 is provided with aquaporin-4 with combining between radiation chamber 3, and aquaporin place is provided with electrically operated valve.
3, the formation of associating radiation chamber 3 for to be provided with Ultrasonic Radiation system and UV radiation system in a chamber.In conjunction with Fig. 3, wherein Ultrasonic Radiation system is provided with ultrasonic generator 7 and ultrasonic transducer 8; UV radiation system is provided with ultraviolet generator 9 and UV-light transmodulator 10.Associating radiation chamber 3 is respectively equipped with sewage inlet 11, sewage outlet 12, activated sludge inlet 13 and active sludge outlet 14.Ultrasonic system is provided with 3 gears: biological treatment strengthening shelves, deep purifying shelves and sludge dewatering shelves.By PLC(Programmable Logic Controller, programmable logic controller) sequence controller automatically controls the two large switch of system and the adjustings of each gear in radiation chamber, and passes through the current status of bright dark reaction radiation chamber of pilot lamp.This associating radiation chamber can complete following three functions in chronological order:
1, biological treatment strengthening shelves: (ultrasonic frequency is 21kHz to low-intensity ultrasonic, and the sound intensity is 0.2-0.3W/cm
2) irradiation active sludge, rely on its mechanical effect and stable cavitation effect to make the mass transfer frictional belt attenuate of microorganism in mud, and solute ions motion is accelerated, improve the mass transfer diffusion process that reactant enters enzyme or cytoactive position and resultant and enter liquid ature of coal, the organic process of accelerate decomposition, makes to purify more thorough.
2, deep purifying shelves: high-strength ultrasonic (ultrasonic frequency is 24kHz, and power is 90W) radiation and uv-radiation (254nm) are used in combination and carry out deep purifying.Hyperacoustic power is controlled at higher degree and contributes to improve ultrasonic degradation speed, and this is because the productive rate of OH free radical increases with the increase of frequency of source.And uv-radiation and ultrasonic radiation have complementary synergetic property, two kinds of radiation are complemented each other, and can greatly strengthen the capacity of decomposition of oxygenant, Reaction time shorten, and the consumption of minimizing oxygenant, makes the clearance of COD and organic mineralization velocity all very high.
3, sludge dewatering shelves: ultrasonic frequency is that 20-30kHz, the sound intensity are 400W/m
2the used mud of ultrasonication can improve the dehydration property of mud, be subsequent disposal save energy.This is because the moisture in mud mainly exists with the form of interstitial water, changes the structure of mud, can improve the dehydrating effect of mud.Because zoogloea has good water retention property, utilize ultrasonic wave to destroy sludge structure, can reach the object of improving dewatering performance of sludge.
Concrete implementation step is as follows:
1, pretreatment stage.
First pass through barrier and equalizing tank through the sewage of collecting, remove after larger floating matter and suspended substance, gravity flow enters active sludge water purification reactor.
2, water inlet-hold concurrently the oxygen stage.
Gravity flow enters the aerobic area 1 of described active sludge water purification reactor, stops 0.3-0.5h.
3, water inlet-aeration phase.
PLC controls the aquaporin valve between aerobic area 1 and main reaction region 2, water inlet limit, limit aeration, PLC controls the biological treatment strengthening shelves of opening associating radiation chamber UV radiation system simultaneously, automatically start quantitative mud mechanical manipulator 5, from main reaction region, capture a certain amount of mud, in associating radiation chamber internal radiation 10-15min, then control mud by PLC and send mechanical manipulator (or getting mud mechanical manipulator) back to the mud after irradiation is restored in main reaction region 2 and participates in subsequent reactions.This get mud also mud process repeat uninterruptedly to carry out to capture the active sludge of 8-10kg every 20min in this stage.
4, water inlet-precipitate phase.
Stop aeration, staticly settle and make mud-water separation, time of repose is 90min.This precipitate phase does not only stop into water, and get mud also mud process also do not stop.
5, bleeding stage.
This stage reactors stops into water, get mud also mud system also close.Controlling main reaction region 2 by PLC opens with the aquaporin-4 electrically operated valve of combining between radiation chamber 3, the water of discharging enters the sewage inlet 11 of associating radiation chamber 3 via aquaporin-4, controlled deep purifying shelves and the UV radiation system of opening Ultrasonic Radiation system by PLC, close biological treatment strengthening shelves and dehydration shelves, carry out deep purifying 45min, and water is discharged by sewage outlet 12.
6, the subsequent disposal stage.
After water purification finishes, control sludge pump 6 by PLC the active sludge in main reaction region is pumped into associating radiation chamber 3, and open and open dehydration shelves by PLC time variable control Ultrasonic Radiation system, irradiate 2-4min, destroy sludge structure, utilize zoogleic water-retentivity to improve the dewatering of mud, it is pending that the mud after improvement is transported to sludge thickener etc.
Claims (9)
1. an active sludge water purification reactor, is characterized in that: comprise aerobic area, main reaction region and associating radiation chamber; Described aerobic area is with main reaction region, main reaction region and combine between radiation chamber and be equipped with aquaporin, and aquaporin place is provided with valve; In described associating radiation chamber, be provided with Ultrasonic Radiation system and UV radiation system; Described Ultrasonic Radiation system comprises ultrasonic generator and ultrasonic transducer; Described UV radiation system comprises ultraviolet generator and ultraviolet transmodulator; Described ultrasonic transducer, ultraviolet transmodulator are connected with ultrasonic generator, ultraviolet generator respectively.
2. active sludge water purification reactor according to claim 1, is characterized in that: the volume of described aerobic area accounts for 5% of described active sludge water purification reactor cumulative volume.
3. active sludge water purification reactor according to claim 1 and 2, is characterized in that: described active sludge water purification reactor also comprises PLC; Described valve is electrically operated valve; Described PLC is connected with electrically operated valve, ultrasonic generator, ultrasonic transducer, ultraviolet generator, ultraviolet transmodulator respectively.
4. active sludge water purification reactor according to claim 3, is characterized in that: on described associating radiation chamber, be respectively equipped with sewage inlet, sewage outlet, activated sludge inlet and active sludge outlet.
5. active sludge water purification reactor according to claim 4, is characterized in that: described active sludge water purification reactor also comprises gets mud mechanical manipulator and sludge pump; Described PLC respectively with get mud mechanical manipulator, sludge pump is connected.
6. described in employing claim 1, active sludge water purification reactor, to a dirty water purification method, is characterized in that: described purifying method step is as follows:
(1) pretreatment stage: first sewage is removed to larger floating matter and suspended substance through grid and equalizing tank;
(2) water inlet-hold concurrently the oxygen stage: gravity flow enters the aerobic area of described active sludge water purification reactor, stops 0.3-0.5h;
(3) water inlet-aeration phase: open the aquaporin valve between aerobic area and main reaction region, carry out periodicity aeration when water inlet, carry out biological degradation in main reaction region; In biodegradation process, from main reaction region, capture active sludge and enter in associating radiation chamber to carry out ultrasonication, active sludge after treatment is sent back in main reaction region again; The ultrasonic frequency of described ultrasonication is 21kHz, and the sound intensity is 0.2-0.3W/cm
2, the treatment time is 10-15min; The crawl frequency of described active sludge is the active sludge that captures 8-10kg every 20min;
(4) water inlet-precipitate phase: stop aeration, staticly settle and make mud-water separation, time of repose is 90min; This stage does not stop into water, and carries out the ultrasonication of the active sludge in step (3) simultaneously;
(5) bleeding stage: open main reaction region and the aquaporin valve of combining between radiation chamber, by through in the water of rough purification passes into associating radiation chamber simultaneously after ultrasonic wave and ultraviolet radiation treatment, through quartz sand and activated carbon filtration; Described ultrasonic wave and ultraviolet radiation treatment time are 45min; Described ultrasonic frequency is 24kHz, and power is 90W, and described uv-radiation predominant wavelength is 254nm;
(6) the subsequent disposal stage: the active sludge in main reaction region is first transported in associating radiation chamber through ultrasonication, and it is pending that mud after treatment is transported to sludge thickener etc.; Described ultrasonic frequency is 20-30kHz, and the sound intensity is 400W/m
2, ultrasonic time is 2-4min.
7. purifying method according to claim 6, is characterized in that: the crawl of active sludge is controlled and got mud mechanical manipulator and carry out by PLC in described step (3); Aquaporin valve in described step (3) and step (5) all adopts electrically operated valve, and by PLC trip switch; Described ultrasonic wave and ultraviolet radiation treatment control Ultrasonic Radiation system by PLC respectively and UV radiation system realizes.
8. treatment process according to claim 7, is characterized in that: described PLC measures the content of described reaction tank content by ultrasonic transducer; When described reaction tank content height reach pond dark 2/3 time, carry out the active sludge ultrasonication of described step (3).
9. treatment process according to claim 6, is characterized in that: while carrying out periodicity aeration in described step (3), control in described main reaction region dirty oxygen in water between 0mg/L ~ 2.5mg/L.
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| CN201410303194.2A CN104030534B (en) | 2014-06-30 | 2014-06-30 | A kind of active sludge Water warfare reactor and application thereof |
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| CN201410303194.2A CN104030534B (en) | 2014-06-30 | 2014-06-30 | A kind of active sludge Water warfare reactor and application thereof |
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| CN104030534B CN104030534B (en) | 2016-02-03 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20030015469A1 (en) * | 2001-04-17 | 2003-01-23 | Hedenland Michael David | Modified intermittent cycle, extended aeration system (miceas) |
| CN101575159A (en) * | 2009-06-12 | 2009-11-11 | 哈尔滨工业大学 | Method of intensified denitrification and dephosphorization of urban sewage |
| CN102070286A (en) * | 2010-11-23 | 2011-05-25 | 广东工业大学 | Method for improving sludge anoxic/aerobic digestion property by utilizing ultrasonic pretreatment |
| CN102515448A (en) * | 2011-12-26 | 2012-06-27 | 天津大学 | Process for promoting biological denitrification by performing ultrasonic disintegration on residual sludge to reflow and replenish denitrification carbon source |
| CN103771670A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Method and apparatus for removing sulfate in high-salt petrochemical wastewater |
| CN203922950U (en) * | 2014-06-30 | 2014-11-05 | 南京信息工程大学 | A kind of active sludge water purification reactor |
-
2014
- 2014-06-30 CN CN201410303194.2A patent/CN104030534B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030015469A1 (en) * | 2001-04-17 | 2003-01-23 | Hedenland Michael David | Modified intermittent cycle, extended aeration system (miceas) |
| CN101575159A (en) * | 2009-06-12 | 2009-11-11 | 哈尔滨工业大学 | Method of intensified denitrification and dephosphorization of urban sewage |
| CN102070286A (en) * | 2010-11-23 | 2011-05-25 | 广东工业大学 | Method for improving sludge anoxic/aerobic digestion property by utilizing ultrasonic pretreatment |
| CN102515448A (en) * | 2011-12-26 | 2012-06-27 | 天津大学 | Process for promoting biological denitrification by performing ultrasonic disintegration on residual sludge to reflow and replenish denitrification carbon source |
| CN103771670A (en) * | 2012-10-20 | 2014-05-07 | 中国石油化工股份有限公司 | Method and apparatus for removing sulfate in high-salt petrochemical wastewater |
| CN203922950U (en) * | 2014-06-30 | 2014-11-05 | 南京信息工程大学 | A kind of active sludge water purification reactor |
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