CN105084647A - Method and device for treating urban domestic sewage at low-temperature environment - Google Patents
Method and device for treating urban domestic sewage at low-temperature environment Download PDFInfo
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- CN105084647A CN105084647A CN201510426171.5A CN201510426171A CN105084647A CN 105084647 A CN105084647 A CN 105084647A CN 201510426171 A CN201510426171 A CN 201510426171A CN 105084647 A CN105084647 A CN 105084647A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a method and device for treating urban domestic sewage at a low-temperature environment. According to the method, sewage treatment is completed together by a microelectrolysis column and a sequencing batch reactor; iron ion flocculation which is generated from sewage in the microelectrolysis column by means of oxidation-reduction, and is used for preventing sludge in the sewage from expanding at a low temperature, and the adsorbability of iron ion flocculation on organic matters, nitrogen, phosphorous and other pollutants in the sewage and the sewage settling performance can be improved; and after the iron ion flocculation and sewage enter the sequencing batch reactor, through the ion transferring effect of the iron ion flocculation, growth and biochemical activities of microorganisms in the activated sludge under a low-temperature condition can be improved, and the biochemical treatment capability is enhanced. The method and device can be used for well solving the requirement for urban domestic sewage treatment at a low-temperature climatic environment which lasts more than 3 months every year in northwest regions of China.
Description
Technical field
process method and the device of city domestic sewage under the present invention relates to a kind of low temperature environment, belong to town domestic sewage processing technology field.
Background technology
when adopting traditional Wastewater Treated by Activated Sludge Process city domestic sewage, organism in sewage is converted into inorganics thus is removed in the assimilation processes of Microbial Communities in Activated Sludge, but NORTHWEST CHINA area will face the microthermal climate environment of three wheat harvesting periods every year, because water temperature is on the low side, microbial biochemical activity is low, and mud not only directly can reduce biochemical purification ability and even easily cause sludge bulking.Particularly in low-temperature sewage, particulate matter and colloid dough can serious microbiostatic activity, thus reduce biological treatment operation stability and effluent quality.Therefore be necessary to develop a kind of novel iron carbon active sludge treatment city domestic sewage system newly.
Summary of the invention
the object of the invention is to, process method and the device of city domestic sewage under providing a kind of low temperature environment, to solve in water temperature situation on the low side, microbial biochemical activity is low, biological treatment operation stability and the undesirable problem of effluent quality, thus overcome the deficiencies in the prior art.
technical scheme of the present invention is achieved in that
the method processing city domestic sewage under a kind of low temperature environment of the present invention is, the method employing light electrolysis post and sequence batch reactor complete the process to sewage jointly; Sewage generates iron ion flco by redox reaction and prevents the mud in sewage from expanding at low temperatures in light electrolysis post, improves iron ion flco to the adsorptive power of pollutent and the settling properties of sewage such as dirty Organic substance in water, nitrogen and phosphorus; After iron ion flco and sewage together enter sequence batch reactor, by the transmission effect of iron ion flco to electronics, improve Microbial Communities in Activated Sludge growth at low temperatures and biochemical activity, thus strengthen biochemical treatment ability.
in preceding method, described sewage together enters light electrolysis post by light electrolysis column bottom and oxygen, and throwing in the packing layer in the middle part of light electrolysis post has iron carbon filler; Sewage is by producing redox reaction generate iron ion flco with iron carbon filler during packing layer, and iron ion flco from the discharge of light electrolysis post top, enters sequence batch reactor together with sewage.
in preceding method, be provided with stirrer in described sequence batch reactor, stirrer adopts time variable control; By intermittence open stirrer make in sequence batch reactor, to form anaerobism 75 minutes, aerobic 165 minutes, sub-anaerobism 90 minutes, the short distance nitration of aerobic 120 minutes alternative aerobic and anaerobic and denitrification environment, improve the clearance of nitrogen and phosphorus in sewage; Make the biochemical oxygen demand (BOD) in active sludge and chemical oxygen demand (COD) greatly be reduced by the Degradation of microorganism simultaneously.
in preceding method, described sequence batch reactor is provided with redox potential probe and potential of hydrogen probe, the running status of sequence batch reactor can be understood, to guarantee to be operated in optimal operational condition in sequence batch reactor type sequence intermittent pond by redox potential probe and potential of hydrogen probe.
in preceding method, described sewage squeezes into light electrolysis post by sump pump, is provided with sludge pump bottom sequence batch reactor, and sequence batch reactor top is provided with wet-pit; Described sump pump, sludge pump and wet-pit provide by solar panel, and in normal sunshine situation, by regulating charge controller to make storage of solar energy in store battery, store battery is connected with sump pump, sludge pump and wet-pit.
the device processing city domestic sewage under of the present invention a kind of low temperature environment according to aforesaid method formation is that this device comprises light electrolysis post and sequence batch reactor; The water-in of light electrolysis column bottom is connected with the sump pump in tank through pipeline; The water outlet on light electrolysis post top is connected through the water-in of pipeline with sequence batch reactor top, and be provided with water port in the middle part of sequence batch reactor, water port is connected with wet-pit through pipeline; Be provided with mud discharging mouth bottom sequence batch reactor, mud discharging mouth is connected with sludge pump through pipeline.
in aforementioned means, be provided with sewage inlet pipe bottom described tank, sewage inlet pipe is connected with urban sewage discharge pipeline.
in aforementioned means, described light electrolysis column bottom is provided with sand filtration microporous aeration device, and sand filtration microporous aeration device is connected with oxygen channel; Be provided with packing layer in the middle part of light electrolysis post, throwing in packing layer has iron carbon filler.
in aforementioned means, in described sequence batch reactor, be provided with stirrer; Sequence batch reactor is provided with redox potential probe and potential of hydrogen probe.
in aforementioned means, described sump pump, wet-pit are connected with store battery with sludge pump, and store battery is connected with sun power electroplax through charge controller.
owing to have employed above-mentioned technology, the present invention compared with prior art, the present invention has following effect: one is that the iron ion flco that iron-carbon micro-electrolysis produces is conducive to organism in absorption effluent, nitrogen and phosphorus etc., improve the settling property of sewage simultaneously, prevent mud from low temperatures sludge bulking occurring, the iron ion that iron-carbon micro-electrolysis produces simultaneously plays the effect of transmitting electronics, this active iron ion is conducive to improving the growth at low temperatures of type sequence intermittent Microbial Communities in Activated Sludge and biochemical activity, thus strengthens biochemical treatment ability.Two is removal efficiency that sequence batch reactor substantially increases pollutent; Be conducive to the sludge bulking that control thread fungus causes simultaneously, keep active sludge optimum regime; Alternative aerobic and anaerobic is good to Recalcitrant chemicals treatment effect; Type sequence intermittent plant area area is little, and structure is simple, and convenient operation manages.Three is that the equipment such as the pump of whole system and stirrer all converts alternating-current to by solar electrical energy generation and maintains power, and save energy, reduces costs.
below the comparative analysis table of water inlet of the present invention and water outlet:
as seen from the above table, after device of the present invention, COD, NH in water
4
+
-N, TN, PO
4
3
the content of-P all has and significantly reduces.The potential of hydrogen change of water is little, and aquifer yield slightly reduces.
the present invention can be adapted to the microthermal climate environment that NORTHWEST CHINA area will face three wheat harvesting periods every year, iron-carbon micro-electrolysis not only remains original sewage disposal effect, play again the effect of BAF simultaneously, thus reduce the load of active sludge in subsequent biochemical reactor, the iron ion that light electrolysis produces simultaneously can be strengthened the structure of active sludge and settling property, promotes microbial growth amount and the speed of growth.
Accompanying drawing explanation
fig. 1 is structural representation of the present invention.
mark in accompanying drawing: 1-sewage inlet pipe; 2-tank; 3-sump pump; 4-light electrolysis post; 5-packing layer; 6-sequence batch reactor; 7-redox potential is popped one's head in; 8-potential of hydrogen is popped one's head in; 9-stirrer; 10-sludge pump; 11-goes out water pump; 12-sun power electroplax; 13-charge controller; 14-store battery.
Embodiment
below in conjunction with drawings and Examples, the present invention is described in further detail, but not as any limitation of the invention.
process the method for city domestic sewage under a kind of low temperature environment of the present invention, as shown in Figure 1, the method employing light electrolysis post and sequence batch reactor complete the process to sewage jointly; Sewage generates iron ion flco by redox reaction and prevents the mud in sewage from expanding at low temperatures in light electrolysis post, improves iron ion flco to the adsorptive power of pollutent and the settling properties of sewage such as dirty Organic substance in water, nitrogen and phosphorus; After iron ion flco and sewage together enter sequence batch reactor, by the transmission effect of iron ion flco to electronics, improve Microbial Communities in Activated Sludge growth at low temperatures and biochemical activity, thus strengthen biochemical treatment ability.Sewage together enters light electrolysis post by light electrolysis column bottom and oxygen, and throwing in the packing layer in the middle part of light electrolysis post has iron carbon filler; Sewage is by producing redox reaction generate iron ion flco with iron carbon filler during packing layer, and iron ion flco from the discharge of light electrolysis post top, enters sequence batch reactor together with sewage.Be provided with stirrer in sequence batch reactor, stirrer adopts time variable control; By intermittence open stirrer make in sequence batch reactor, to form anaerobism 75 minutes, aerobic 165 minutes, sub-anaerobism 90 minutes, the short distance nitration of aerobic 120 minutes alternative aerobic and anaerobic and denitrification environment, improve the clearance of nitrogen and phosphorus in sewage; Make the biochemical oxygen demand (BOD) in active sludge and chemical oxygen demand (COD) greatly be reduced by the Degradation of microorganism simultaneously.Sequence batch reactor is provided with redox potential probe and potential of hydrogen probe, the running status of sequence batch reactor can be understood, to guarantee to be operated in optimal operational condition in sequence batch reactor type sequence intermittent pond by redox potential probe and potential of hydrogen probe.Sewage squeezes into light electrolysis post by sump pump, is provided with sludge pump bottom sequence batch reactor, and sequence batch reactor top is provided with wet-pit; Described sump pump, sludge pump and wet-pit provide by solar panel, and in normal sunshine situation, by regulating charge controller to make storage of solar energy in store battery, store battery is connected with sump pump, sludge pump and wet-pit.
according to the device processing city domestic sewage under of the present invention a kind of low temperature environment that aforesaid method is formed, as shown in Figure 1, this device comprises light electrolysis post 4 and sequence batch reactor 6; Water-in bottom light electrolysis post 4 is connected with the sump pump 3 in tank 2 through pipeline; The water outlet on light electrolysis post 4 top is connected through the water-in of pipeline with sequence batch reactor 6 top, and be provided with water port in the middle part of sequence batch reactor 6, water port is connected with wet-pit 11 through pipeline; Be provided with mud discharging mouth bottom sequence batch reactor 6, mud discharging mouth is connected with sludge pump 10 through pipeline.Be provided with sewage inlet pipe 1 bottom tank 2, sewage inlet pipe 1 is connected with urban sewage discharge pipeline.Be provided with sand filtration microporous aeration device bottom light electrolysis post 4, sand filtration microporous aeration device is connected with oxygen channel; Be provided with packing layer 5 in the middle part of light electrolysis post 4, throwing in packing layer 5 has iron carbon filler.Stirrer 9 is provided with in sequence batch reactor 6; Sequence batch reactor 6 is provided with redox potential probe 7 and potential of hydrogen probe 8.Sump pump 3, wet-pit 11 are connected with store battery 14 with sludge pump 10, and store battery 14 is connected with sun power electroplax 12 through charge controller 13.
Embodiment
this is such as shown in Fig. 1, city domestic sewage is by sewage inlet pipe 1, enter after light electrolysis post 4 through sump pump 3, under aeration situation is interrupted in light electrolysis column bottom, redox reaction is there is in sewage in light electrolysis post, the iron ion flco generated plays organism in absorption city domestic sewage, the pollutent such as nitrogen and phosphorus, sequence batch reactor 6 is together entered after the iron ion flco simultaneously generated enters sewage, in sequence batch reactor, iron ion flco transmits electronics promotion microorganism growth and biochemical activity, improve microorganism active, strengthen organic removal efficiency.Stirrer 9 is opened by intermittence, form anaerobism 75 minutes, aerobic 165 minutes, sub-anaerobism 90 minutes, the short distance nitration formed for aerobic 120 minutes and denitrification improve nitrogen, tp removal rate in sewage, meanwhile, active sludge mesophytization oxygen requirement, chemical oxygen demand (COD) are reduced greatly by the Degradation of microorganism.All types of probes in sequence batch reactor 6 comprise redox potential probe 7, potential of hydrogen probe 8 guarantees optimal operating condition in sequence batch reactor 6.Simultaneously due to after particulate matter in iron carbon filler absorption effluent, particle surface has been wrapped one deck inert substance, therefore after running 3 days, clean filler, thus improving whole system operation stability, the power of whole device is provided by a solar panel 12, in normal sunshine situation, by regulating charge controller 13 to make storage of solar energy at store battery 14, store battery is supplied to all types of pump power.Whole Sewage treatment systems, structure is simple, and operation conditions level of automation is high.
light electrolysis post in this example is obtained by synthetic glass, and light electrolysis column internal diameter is 20cm, and height 40cm, useful volume 12L, iron carbon filler adds in the packing layer in the middle part of reactor.Bottom adopts the oxygen supply of sand filtration micro-pore aeration, adopts bottom water inlet, top water outlet.The iron ion flco generated in reaction process is conducive to organism and nitrogen, phosphorus in absorption effluent, simultaneously, the iron ion flco that iron oxidation of coal reduction reaction generates plays the transmission effect of electronics, plays promoter action to microbial biochemical reaction, improves biochemical reaction speed.
sequence batch reactor 6 in this example adopts synthetic glass, reactor inside diameter 20cm, high 50cm, reactor useful volume 6L.Sequence batch reactor anaerobism 75min, aerobic 165min, sub-anaerobism 90min, aerobic 120min, sludge settling 30min, carry out once artificial spoil disposal every day.Detect data target by potential of hydrogen instrument, redox potential probe in operational process, guarantee sequence batch reactor safe and stable operation.Aerobic by intermittence, anaerobic environment makes zoogloea generation ammonia oxidation in mud, short-cut nitrification and denitrification function.
Claims (10)
1. process a method for city domestic sewage under low temperature environment, it is characterized in that: the method employing light electrolysis post and sequence batch reactor complete the process to sewage jointly; Sewage generates iron ion flco by redox reaction and prevents the mud in sewage from expanding at low temperatures in light electrolysis post, improves iron ion flco to the adsorptive power of pollutent and the settling properties of sewage such as dirty Organic substance in water, nitrogen and phosphorus; After iron ion flco and sewage together enter sequence batch reactor, by the transmission effect of iron ion flco to electronics, improve Microbial Communities in Activated Sludge growth at low temperatures and biochemical activity, thus strengthen biochemical treatment ability.
2. process the method for city domestic sewage according to claim 1 under low temperature environment, it is characterized in that: described sewage together enters light electrolysis post by light electrolysis column bottom and oxygen, throwing in the packing layer in the middle part of light electrolysis post has iron carbon filler; Sewage is by producing redox reaction generate iron ion flco with iron carbon filler during packing layer, and iron ion flco from the discharge of light electrolysis post top, enters sequence batch reactor together with sewage.
3. process the method for city domestic sewage according to claim 1 under low temperature environment, it is characterized in that: be provided with stirrer in described sequence batch reactor, stirrer adopts time variable control; By intermittence open stirrer make in sequence batch reactor, to form anaerobism 75 minutes, aerobic 165 minutes, sub-anaerobism 90 minutes, the short distance nitration of aerobic 120 minutes alternative aerobic and anaerobic and denitrification environment, improve the clearance of nitrogen and phosphorus in sewage; Make the biochemical oxygen demand (BOD) in active sludge and chemical oxygen demand (COD) greatly be reduced by the Degradation of microorganism simultaneously.
4. process the method for city domestic sewage according to claim 1 under low temperature environment, it is characterized in that: described sequence batch reactor is provided with redox potential probe and potential of hydrogen probe, the running status of sequence batch reactor can be understood, to guarantee to be operated in optimal operational condition in sequence batch reactor type sequence intermittent pond by redox potential probe and potential of hydrogen probe.
5. process the method for city domestic sewage according to claim 1 under low temperature environment, it is characterized in that: described sewage squeezes into light electrolysis post by sump pump, is provided with sludge pump bottom sequence batch reactor, sequence batch reactor top is provided with wet-pit; Described sump pump, sludge pump and wet-pit provide by solar panel, and in normal sunshine situation, by regulating charge controller to make storage of solar energy in store battery, store battery is connected with sump pump, sludge pump and wet-pit.
6. process a device for city domestic sewage under the low temperature environment that method is formed according to the arbitrary claim of claim 1-5, it is characterized in that: comprise light electrolysis post (4) and sequence batch reactor (6); The water-in of light electrolysis post (4) bottom is connected with the sump pump (3) in tank (2) through pipeline; The water outlet on light electrolysis post (4) top is connected through the water-in of pipeline with sequence batch reactor (6) top, and sequence batch reactor (6) middle part is provided with water port, and water port is connected with wet-pit (11) through pipeline; Sequence batch reactor (6) bottom is provided with mud discharging mouth, and mud discharging mouth is connected with sludge pump (10) through pipeline.
7. process the device of city domestic sewage according to claim 6 under low temperature environment, it is characterized in that: described tank (2) bottom is provided with sewage inlet pipe (1), and sewage inlet pipe (1) is connected with urban sewage discharge pipeline.
8. process the device of city domestic sewage according to claim 6 under low temperature environment, it is characterized in that: described light electrolysis post (4) bottom is provided with sand filtration microporous aeration device, and sand filtration microporous aeration device is connected with oxygen channel; Light electrolysis post (4) middle part is provided with packing layer (5), and throwing in packing layer (5) has iron carbon filler.
9. process the device of city domestic sewage according to claim 6 under low temperature environment, it is characterized in that: in described sequence batch reactor (6), be provided with stirrer (9); Sequence batch reactor (6) is provided with redox potential probe (7) and potential of hydrogen probe (8).
10. process the device of city domestic sewage according to claim 6 under low temperature environment, it is characterized in that: described sump pump (3), wet-pit (11) are connected with store battery (14) with sludge pump (10), and store battery (14) is connected with sun power electroplax (12) through charge controller (13).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487838A (en) * | 2017-08-21 | 2017-12-19 | 吉林大学 | SBR tames the method and device that special sludge structure realizes low-temperature sewage efficient dephosphorization |
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Non-Patent Citations (1)
| Title |
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| 马红芳: "内电解法强化后续SBR处理工艺的研究", 《中国优秀博硕学位论文全文数据库（硕士）工程科技I辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107487838A (en) * | 2017-08-21 | 2017-12-19 | 吉林大学 | SBR tames the method and device that special sludge structure realizes low-temperature sewage efficient dephosphorization |
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Application publication date: 20151125 |