CN104787989A - Deep-well aeration tank, enhanced wastewater nitrogen and phosphorus removal device and enhanced wastewater nitrogen and phosphorus removal method - Google Patents
Deep-well aeration tank, enhanced wastewater nitrogen and phosphorus removal device and enhanced wastewater nitrogen and phosphorus removal method Download PDFInfo
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- CN104787989A CN104787989A CN201510204745.4A CN201510204745A CN104787989A CN 104787989 A CN104787989 A CN 104787989A CN 201510204745 A CN201510204745 A CN 201510204745A CN 104787989 A CN104787989 A CN 104787989A
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- 238000005273 aeration Methods 0.000 title claims abstract description 115
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 18
- 239000011574 phosphorus Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 239000010865 sewage Substances 0.000 claims description 54
- 238000010992 reflux Methods 0.000 claims description 29
- 239000000203 mixture Substances 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 14
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 239000010841 municipal wastewater Substances 0.000 abstract 2
- 238000004062 sedimentation Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000011161 development Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 229920000037 Polyproline Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a deep-well aeration tank, an enhanced wastewater nitrogen and phosphorus removal device and an enhanced wastewater nitrogen and phosphorus removal method, relates to a deep-well aeration tank, a wastewater treatment device and a wastewater treatment method, and provides a water treatment method and device suitable for treating municipal wastewater, particularly municipal wastewater in northeast China, small in floor area, low in energy consumption and easy to operate and maintain. The deep-well aeration tank comprises an outer deep-well aeration tank barrel, an inner deep-well aeration tank barrel, a deaeration tank and an aeration device. The enhanced wastewater nitrogen and phosphorus removal device comprises a water storage tank, an anaerobic tank, an anoxic tank, the deep-well aeration tank, a first deaeration tank, a second deaeration tank, a secondary sedimentation tank, a water inlet pump, a sludge return pump, a nitrification liquid return pump, a water outlet and a sludge valve. The enhanced wastewater nitrogen and phosphorus removal method comprises the following steps: 1, domesticating activated sludge in the deep-well aeration tank; 2, treating wastewater; 3, discharging water treated by the secondary sedimentation tank through the water outlet, and discharging the residual sludge through the sludge valve. The enhanced wastewater nitrogen and phosphorus removal device has unit land area treatment capability of 20,000 cubic meters per day, organic load capable of reaching more than 0.8kgBOD/kgMLSS and high dissolved oxygen utilization rate.
Description
Technical field
The present invention relates to a kind of deep well aeration pond and wastewater treatment equipment and method of wastewater treatment.
Background technology
Water resources is the primary condition that the mankind depend on for existence, and Ye Shi China economy realizes the basic premise of Sustainable development.China's gross amount of water resources position is at the forefront in the world, but water resource of per capita less than the world average 1/4.
Along with China's expanding economy, the growth of population, the quickening of industrialization and urban development paces, water consumption is also in continuous increase, the quantity discharged of sewage is also in continuous increase, and the pollution of surface water and groundwater is on the rise, and makes the situation of water resources shortage day by day serious.1,050 hundred million t are reached to China's quantity of wastewater effluent in 2007.So a large amount of sewage discharges, directly seriously affects human normal life and health, and the life and health of the mankind in serious threat, hinders economic Sustainable development; Also threaten the natural eubiosis.So the dirty water decontamination handles has necessity and importance.Recycling after sewage purification, can improve the utilization ratio of water resources, reduces the pressure that water resources is brought, the contradiction of moderate water shortage of resources, can alleviate again natural stream networks greatly and pollute, reach the eubiosis of water conservation, conservation of nature.
Present city is more and more crowded, and flourishing city is all the more so, can be described as an inch of land is an inch of gold.A lot of city does not have enough soils to build sewage work, and conventional sewage treatment process such as the technique such as A2O, oxidation ditch often needs a large amount of soils to build, and therefore cannot realize.
Town development Sewage Plant exists builds easily, the problem of running maintenance difficulty, and sewage work easily produces considerable influence to surrounding enviroment, and particularly VOC (volatile organic compounds) is to the raw inconvenience greatly of water factory people around people's livelihood life birth.
Summary of the invention
The object of this invention is to provide that a kind of floor space is little, consume energy low, the simple water treatment method of running maintenance and device.
Deep well aeration pond of the present invention comprises deep well aeration pond outer cylinder body, deep well aeration pond inner core, degassed pond and aerating apparatus, and the water-in in deep well aeration pond and aerating apparatus are all arranged on aeration tank inner core inner bottom part.
Utilize the waste water enhanced nitrogen removal dephosphorization device in above-mentioned deep well aeration pond, waste water enhanced nitrogen removal dephosphorization device comprises water tank, anaerobic pond, anoxic pond, deep well aeration pond, the first degassed pond, the second degassed pond, second pond, intake pump, sludge reflux pump, nitrification liquid reflux pump, water port and mud valve;
Anaerobic pond, anoxic pond, the first degassed pond and the second degassed pond are equipped with agitator; Water tank is connected with anaerobic pond, anoxic pond respectively by intake pump; First degassed pond is connected with anoxic pond, anoxic pond is connected with anaerobic pond, anaerobic pond is connected with deep well aeration pond by intake pump, deep well aeration pond is connected with the second degassed pond, second degassed pond is connected with second pond, second pond is connected with the first degassed pond by sludge reflux pump, and deep well aeration pond is connected with the first degassed pond by nitrification liquid reflux pump; Water port is arranged on second pond top; Mud valve is arranged on bottom second pond.
Above-mentioned waste water enhanced nitrogen removal dephosphorization device is utilized to carry out the method for waste water enhanced nitrogen removal dephosphorization:
One, acclimated activated sludge in deep well aeration pond;
Two, the active sludge of taming in deep well aeration pond and sewage are passed into anaerobic pond, anoxic pond, the first degassed pond, the second degassed pond, second pond, then intake pump, aerating apparatus and agitator is opened, sewage in water tank enters into anaerobic pond and anoxic pond respectively, the flooding quantity of anaerobic pond is 25% ~ 75% of the total aquifer yield of water tank, and the flooding quantity of anoxic pond is 75% ~ 25% of the total aquifer yield of water tank, in anoxic pond, sewage is uniformly mixed pusher and flows to into anaerobic pond, deep well aeration pond is pumped into after being uniformly mixed in anaerobic pond from the sewage of anoxic pond and water tank, sewage in deep well aeration pond forms air lift circulation under aeration effect, sewage upwards flows into deep well aeration pond outer cylinder body along deep well aeration pond inner core, sewage forms nitrification liquid after the inner core process of deep well aeration pond, nitrification liquid plug-flow enters the second degassed pond, in the second degassed pond, mix and blend pusher flows to into second pond, mud in second pond enters the first degassed pond by sludge reflux pump reflux, nitrification liquid in deep well aeration pond refluxes into the first degassed pond by nitrification liquid reflux pump, mud and nitrification liquid mix and blend in the first degassed pond, then plug-flow enters anoxic pond,
Three, the water through second pond process is discharged by water port, and remaining mud is discharged by mud valve; Namely waste water enhanced nitrogen removal dephosphorization is completed;
Wherein, the dissolved oxygen concentration of anaerobic pond is less than 0.2mg/L, the dissolved oxygen concentration of anoxic pond is 0.2 ~ 0.5mg/L, dissolved oxygen concentration is 3.2mg/L in the middle part of deep well aeration pond; The hydraulic detention time of anoxic pond is 1.0 ~ 3.0h, the hydraulic detention time of anaerobic pond is 1.0 ~ 3.0h, the hydraulic detention time in deep well aeration pond is 0.5 ~ 2.0h, and the hydraulic detention time of second pond is 2.5h, and the hydraulic detention time in the first degassed pond and the second degassed pond is 0.5h; The return sludge ratio being back to the first degassed pond by second pond is 50% ~ 100%, and the mixed liquid recycle ratio being back to the first degassed pond by deep well aeration pond is 100% ~ 300%.
The deep well aeration tank depth that present invention employs modified form reach more than 50 meters, thin and high, there is the advantage that floor space is little, and in deep well aeration pond, forming air lift circulation, under same aeration condition, in deep well aeration pond of the present invention, the utilization ratio of dissolved oxygen is higher.
Deep well aeration pond of the present invention intakes bottom the inner core of deep well aeration pond, and sewage rises along inner core under the effect of aerating apparatus impellent, then declines in the outer cylinder body of deep well aeration pond, forms air lift circulation.Sewage is reduced gradually by dissolved oxygen in the process rising to degassed pond, top bottom deep well aeration pond, formed aerobic, anoxic condition alternately, can denitrification denitrogenation be formed, strengthen denitrification effect.
Waste water enhanced nitrogen removal dephosphorization device land area of one unit processing power of the present invention is 20000 cubic metres of/day .m
2, far above existing treatment process.
Existing A2O technique Central Plains water directly enters anaerobism section, and most of water-inlet carbon source is consumed in anaerobism section, and the available carbon source of anoxic section is fewer, and cause denitrifying carbon source not enough, nitrogen removal rate is on the low side.The present invention's water inlet enters anaerobism section and anoxic section in proportion respectively, and carbon source is distributed rationally, enhances denitrification effect, enhances the Denitrifying Phosphate Accumulating Organisms of anoxic section simultaneously, plays the effect of saving carbon source.
In the present invention, second pond mud and deep well aeration pond nitrification liquid are back to the first degassed pond, can consume and be partly dissolved oxygen in the first degassed pond, reduce the interference that nitrification liquid refluxes to anoxic pond and anaerobic pond.Also can form lower dissolved oxygen environment in first degassed pond simultaneously, can denitrification denitrogenation be formed, promote denitrification effect.
In the present invention, anaerobic pond water outlet directly enters deep well aeration pond, completes releasing phosphorus and inhaling phosphorus of polyP bacteria, is conducive to the removal of phosphorus.
Capacity of resisting impact load of the present invention is strong, and capacity of resisting impact load of the present invention is strong, more than organic loading 0.8kgBOD/kgMLSS.
Running maintenance of the present invention is simple, and artificial workload is low.
The present invention is applicable to process industrial sewage and city domestic sewage, efficiently can remove the nitrogen in sewage and phosphorus, the COD of water outlet after process of the present invention, ammonia nitrogen, total nitrogen, total phosphorus are down to 28 ~ 46mg/L, 1.8 ~ 3.3mg/L, 6.9 ~ 8.1mg/L, 0.19 ~ 0.31mg/L respectively, are better than GB18918-2002 one-level emission standard A.
Accompanying drawing explanation
Fig. 1 is the structural representation in deep well aeration pond of the present invention, and arrow represents water (flow) direction.
Fig. 2 is the structural representation of waste water enhanced nitrogen removal dephosphorization device of the present invention, arrow representative species direction of motion.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: composition graphs 1 illustrates present embodiment, present embodiment deep well aeration pond comprises deep well aeration pond outer cylinder body, deep well aeration pond inner core 4-2, degassed pond 4-3, aerating apparatus 4-1 and inlet pipe 15, it is characterized in that water-in and the aerating apparatus 4-1 in deep well aeration pond are arranged on aeration tank inner core 4-2 inner bottom part, inlet pipe 15 is connected with aerating apparatus 4-1.
Embodiment two: composition graphs 2 illustrates present embodiment, present embodiment waste water enhanced nitrogen removal dephosphorization device comprises water tank 1, anaerobic pond 2, anoxic pond 3, degassed pond 6, degassed pond 5, second, deep well aeration pond 4, first, second pond 7, intake pump 10, sludge reflux pump 11, nitrification liquid reflux pump 12, water port 13 and mud valve 14;
Anaerobic pond 2, the degassed pond 5 of anoxic pond 3, first and the second degassed pond 6 are equipped with agitator 9; Water tank 1 is connected with anaerobic pond 2, anoxic pond 3 respectively by intake pump 10; First degassed pond 5 is connected with anoxic pond 3, anoxic pond 3 is connected with anaerobic pond 2, anaerobic pond 2 is connected with deep well aeration pond 4 by intake pump 10, deep well aeration pond 4 is connected with the second degassed pond 6, second degassed pond 6 is connected with second pond 7, second pond 7 is connected with the first degassed pond 5 by sludge reflux pump 11, and deep well aeration pond 4 is connected with the first degassed pond 5 by nitrification liquid reflux pump 12; Water port 13 is arranged on second pond 7 top; Mud valve 14 is arranged on bottom second pond 7.
Embodiment three: composition graphs 2 illustrates present embodiment, the method for present embodiment waste water enhanced nitrogen removal dephosphorization is carried out according to the following steps:
One, acclimated activated sludge in deep well aeration pond 4;
Two, the active sludge of taming in deep well aeration pond 4 and sewage are passed into anaerobic pond 2, anoxic pond 3, first degassed pond 6, degassed pond 5, second, second pond 7, then intake pump 10, aerating apparatus 4-1 and agitator 9 is opened, sewage in water tank 1 enters into anaerobic pond 2 and anoxic pond 3 respectively, the flooding quantity of anaerobic pond 2 is 25% ~ 75% of the total aquifer yield of water tank 1, and the flooding quantity of anoxic pond 3 is 75% ~ 25% of the total aquifer yield of water tank 1, in anoxic pond 3, sewage is uniformly mixed pusher and flows to into anaerobic pond 2, after being uniformly mixed in anaerobic pond 2 from the sewage of anoxic pond 3 and water tank 1, pump 10 enters deep well aeration pond 4, sewage in deep well aeration pond 4 forms air lift circulation under aeration effect, sewage upwards flows into deep well aeration pond outer cylinder body along deep well aeration pond inner core 4-2, sewage forms nitrification liquid after the inner core 4-2 process of deep well aeration pond, nitrification liquid plug-flow enters the second degassed pond 6, in the second degassed pond 6, mix and blend pusher flows to into second pond 7, mud in second pond 7 refluxes into the first degassed pond 5 by sludge reflux pump 11, nitrification liquid in deep well aeration pond 4 refluxes into the first degassed pond 5 by nitrification liquid reflux pump 12, mud and nitrification liquid mix and blend in the first degassed pond 5, then plug-flow enters anoxic pond 3,
Three, the water processed through second pond 7 is discharged by water port 13, and remaining mud is discharged by mud valve 14; Namely waste water enhanced nitrogen removal dephosphorization is completed;
Wherein, the dissolved oxygen concentration of anaerobic pond 2 is less than 0.2mg/L, the dissolved oxygen concentration of anoxic pond 3 is 0.2 ~ 0.5mg/L, dissolved oxygen concentration is 3.2mg/L in the middle part of deep well aeration pond 4; The hydraulic detention time of anoxic pond 3 is 1.0 ~ 3.0h, the hydraulic detention time of anaerobic pond 2 is 1.0 ~ 3.0h, the hydraulic detention time in deep well aeration pond 4 is 0.5 ~ 2.0h, and the hydraulic detention time of second pond 7 is 2.5h, and the hydraulic detention time in the first degassed pond 5 and the second degassed pond 6 is 0.5h; The return sludge ratio being back to the first degassed pond 5 by second pond 7 is 50% ~ 100%, and the mixed liquid recycle ratio being back to the first degassed pond 5 by deep well aeration pond 4 is 100% ~ 300%.
Present embodiment returned sluge carries out degassed with backflow nitrification liquid in the first degassed pond 5, gets rid of and is partly dissolved oxygen and enters anoxic section more later.
Present embodiment anaerobic pond 2 water outlet directly enters deep well aeration pond 4, completes release and the absorption of microbe-P.
Embodiment four: the difference of present embodiment and embodiment three is: in step one middle-deep well aeration tank 4, active sludge is tamed by the following method: second pond mud Sewage Plant fetched and fresh sewage are poured in deep well aeration pond 4, open aerating apparatus 4-1 and cultivate 10d under the condition of about 25 DEG C, namely obtain the active sludge of having tamed.Other step and parameter identical with embodiment three.
Embodiment five: the difference of present embodiment and embodiment three or four is: in step 2, in anoxic pond 3, the rotating speed of agitator is 30r/min ~ 50r/min; In anaerobic pond 2, the rotating speed of agitator is 30r/min ~ 50r/min; In second degassed pond 6, the rotating speed of agitator is 30r/min ~ 50r/min; In first degassed pond 5, the rotating speed of agitator is 30r/min ~ 50r/min.Other step and parameter identical with embodiment three or four.
Embodiment six: the difference of present embodiment and embodiment three, four or five is: add biofilm packing in step 2 in deep well aeration pond 4, anaerobic pond 2 and anoxic pond 3.Other step and parameter and embodiment three, four or five identical.
Present embodiment adds biofilm packing in deep well aeration pond 4, anaerobic pond 2 and anoxic pond 3, can increase biomass, improve water body less turbulence.Present embodiment heterogeneous fluid less turbulence is characterized by with shearing resistance and is not less than 0.3.
Embodiment seven: the difference of present embodiment and embodiment three, four, five or six is: in step 2, steam-water ratio is 1.2 ~ 1.5:1 in deep well aeration pond 4.Other step and parameter and embodiment three, four, five or six identical.
In present embodiment, active sludge is along with the change of flow depth, and the pressure born and dissolved oxygen concentration constantly adjust change, and oxygen in water utilization ratio significantly improves, and organism spending rate improves, and has obvious denitrification effect.
Embodiment eight: the difference of present embodiment and embodiment four, five, six or seven is: in step one, the COD value of fresh sewage is 215mg/L ~ 550mg/L, ammonia nitrogen value is 32mg/L ~ 55mg/L, total values of nitrogen might is 38mg/L ~ 62mg/L, and total phosphorus value is 3.9mg/L ~ 7.4mg/L.Other step and parameter and embodiment four, five, six or seven identical.
Embodiment nine: the difference of one of present embodiment and embodiment three to eight is: the sewage in step 2 in water tank 1 enters anaerobic pond 2 and anoxic pond 3 respectively, anaerobic pond 2 is 1:2,1:1 or 2:1 with the flooding quantity ratio of anoxic pond 3.Other step and parameter identical with one of embodiment three to eight.
Embodiment 1
The method of waste water enhanced nitrogen removal dephosphorization is carried out according to the following steps:
One, acclimated activated sludge in deep well aeration pond 4;
Two, the active sludge of taming in deep well aeration pond 4 and sewage are passed into anaerobic pond 2, anoxic pond 3, first degassed pond 6, degassed pond 5, second, second pond 7, then intake pump 10, aerating apparatus 4-1 and agitator 9 is opened, sewage in water tank 1 enters into anaerobic pond 2 and anoxic pond 3 respectively, the flooding quantity of anaerobic pond 2 is 25% ~ 75% of the total aquifer yield of water tank 1, and the flooding quantity of anoxic pond 3 is 75% ~ 25% of the total aquifer yield of water tank 1, in anoxic pond 3, sewage is uniformly mixed pusher and flows to into anaerobic pond 2, after being uniformly mixed in anaerobic pond 2 from the sewage of anoxic pond 3 and water tank 1, pump 10 enters deep well aeration pond 4, sewage in deep well aeration pond 4 forms air lift circulation under aeration effect, sewage upwards flows into deep well aeration pond outer cylinder body along deep well aeration pond inner core 4-2, sewage forms nitrification liquid after the inner core 4-2 process of deep well aeration pond, nitrification liquid plug-flow enters the second degassed pond 6, in the second degassed pond 6, mix and blend pusher flows to into second pond 7, mud in second pond 7 refluxes into the first degassed pond 5 by sludge reflux pump 11, nitrification liquid in deep well aeration pond 4 refluxes into the first degassed pond 5 by nitrification liquid reflux pump 12, mud and nitrification liquid mix and blend in the first degassed pond 5, then plug-flow enters anoxic pond 3,
Three, the water processed through second pond 7 is discharged by water port 13, and remaining mud is discharged by mud valve 14; Namely waste water enhanced nitrogen removal dephosphorization is completed;
Wherein, the dissolved oxygen concentration of anaerobic pond 2 is less than 0.2mg/L, the dissolved oxygen concentration of anoxic pond 3 is 0.2 ~ 0.5mg/L, dissolved oxygen concentration is 3.2mg/L in the middle part of deep well aeration pond 4; The hydraulic detention time of anoxic pond 3 is 1.0 ~ 3.0h, the hydraulic detention time of anaerobic pond 2 is 1.0 ~ 3.0h, the hydraulic detention time in deep well aeration pond 4 is 0.5 ~ 2.0h, and the hydraulic detention time of second pond 7 is 2.5h, and the hydraulic detention time in the first degassed pond 5 and the second degassed pond 6 is 0.5h; The return sludge ratio being back to the first degassed pond 5 by second pond 7 is 50% ~ 100%, and the mixed liquid recycle ratio being back to the first degassed pond 5 by deep well aeration pond 4 is 100% ~ 300%;
Wherein, in step one middle-deep well aeration tank 4, active sludge is tamed by the following method: second pond mud Sewage Plant fetched and fresh sewage are poured in deep well aeration pond 4, open aerating apparatus 4-1 and cultivate 10d under temperature is 25 DEG C of conditions, namely obtain the active sludge of having tamed;
In step 2, in anoxic pond 3, the rotating speed of agitator is 30r/min ~ 50r/min; In anaerobic pond 2, the rotating speed of agitator is 30r/min ~ 50r/min; In second degassed pond 6, the rotating speed of agitator is 30r/min ~ 50r/min; In first degassed pond 5, the rotating speed of agitator is 30r/min ~ 50r/min.
The COD value of the pretreating sewage in water tank 1 is 215mg/L ~ 550mg/L, and ammonia nitrogen value is 32mg/L ~ 55mg/L, and total values of nitrogen might is 38mg/L ~ 62mg/L, and total phosphorus value is 3.9mg/L ~ 7.4mg/L.
Embodiment 2
Except the sewage adopting deep well aeration device (CN201210244816.X) to substitute in deep well aeration pond of the present invention, water tank 1 all enters into except anoxic pond 3, other water processing reactors and parameter are all identical with embodiment 1.
Pretreating sewage is identical with embodiment 1, and the COD value of the pretreating sewage in water tank 1 is 215mg/L ~ 550mg/L, and ammonia nitrogen value is 32mg/L ~ 55mg/L, and total values of nitrogen might is 38mg/L ~ 62mg/L, and total phosphorus value is 3.9mg/L ~ 7.4mg/L.
Experimental result:
It is 28 ~ 46mg/L that embodiment 1 processes rear water outlet COD value, and ammonia nitrogen value is 1.8 ~ 3.3mg/L, and total values of nitrogen might is 6.9 ~ 8.1mg/L, and total phosphorus value is 0.19 ~ 0.31mg/L, reaches country-level emission standard A.
It is 31 ~ 51mg/L that embodiment 2 processes rear water outlet COD value, and ammonia nitrogen value is 2.8 ~ 4.6mg/L, and total values of nitrogen might is 9.6 ~ 15.4mg/L, and total phosphorus value is 0.21 ~ 0.37mg/L, substantially can reach country-level emission standard A.
The results show deep well aeration of the present invention pond dissolution oxygen utilization rate is high, and in deep well aeration pond, produce the effect (denitrification effect enhancing) of denitrification denitrogenation; Water-inlet carbon source obtains an equitable breakdown, and contaminant removal capacity is strengthened, and decontamination effect improving is obviously better than embodiment 2, particularly denitrification effect.The present invention is little in floor space, and the condition that energy consumption is low has been issued to the degree of depth abatement of pollutent, and to the control of water pollutions, the protection of water surrounding serves positive effect.
Claims (9)
1. a deep well aeration pond, it comprises deep well aeration pond outer cylinder body, deep well aeration pond inner core (4-2) and degassed pond (4-3), aerating apparatus (4-1), it is characterized in that the water-in in deep well aeration pond and aerating apparatus (4-1) are all arranged on aeration tank inner core (4-2) inner bottom part.
2. utilize the waste water enhanced nitrogen removal dephosphorization device in deep well aeration pond described in claim 1, it is characterized in that waste water enhanced nitrogen removal dephosphorization device comprises water tank (1), anaerobic pond (2), anoxic pond (3), deep well aeration pond (4), the first degassed pond (5), the second degassed pond (6), second pond (7), intake pump (10), sludge reflux pump (11), nitrification liquid reflux pump (12), water port (13) and mud valve (14);
Anaerobic pond (2), anoxic pond (3), the first degassed pond (5) and the second degassed pond (6) are equipped with agitator (9); Water tank (1) is connected with anaerobic pond (2), anoxic pond (3) respectively by intake pump (10); First degassed pond (5) is connected with anoxic pond (3), anoxic pond (3) is connected with anaerobic pond (2), anaerobic pond (2) is connected with deep well aeration pond (4) by intake pump (10), deep well aeration pond (4) is connected with the second degassed pond (6), second degassed pond (6) is connected with second pond (7), second pond (7) is connected with the first degassed pond (5) by sludge reflux pump (11), and deep well aeration pond (4) are connected with the first degassed pond (5) by nitrification liquid reflux pump (12); Water port (13) is arranged on second pond (7) top; Mud valve (14) is arranged on second pond (7) bottom.
3. utilize device described in claim 2 to carry out the method for waste water enhanced nitrogen removal dephosphorization, it is characterized in that the method for waste water enhanced nitrogen removal dephosphorization is carried out according to the following steps:
One, acclimated activated sludge in deep well aeration pond (4);
Two, the active sludge of having tamed in deep well aeration pond (4) and sewage are passed into anaerobic pond (2), anoxic pond (3), the first degassed pond (5), the second degassed pond (6), second pond (7), then intake pump (10), aerating apparatus (4-1) and agitator (9) is opened, sewage in water tank (1) enters into anaerobic pond (2) and anoxic pond (3) respectively, the flooding quantity of anaerobic pond (2) is 25% ~ 75% of the total aquifer yield of water tank (1), and the flooding quantity of anoxic pond (3) is 75% ~ 25% of the total aquifer yield of water tank (1), the middle sewage of anoxic pond (3) is uniformly mixed pusher and flows to into anaerobic pond (2), sewage from anoxic pond (3) and water tank (1) is uniformly mixed rear pump (10) and enters deep well aeration pond (4) in anaerobic pond (2), sewage in deep well aeration pond (4) forms air lift circulation under aeration effect, sewage upwards flows into deep well aeration pond outer cylinder body along deep well aeration pond inner core (4-2), sewage forms nitrification liquid after the process of deep well aeration pond inner core (4-2), nitrification liquid plug-flow enters the second degassed pond (6), in the second degassed pond (6), mix and blend pusher flows to into second pond (7), mud in second pond (7) refluxes into the first degassed pond (5) by sludge reflux pump (11), nitrification liquid in deep well aeration pond (4) refluxes into the first degassed pond (5) by nitrification liquid reflux pump (12), mud and nitrification liquid be middle mix and blend in the first degassed pond (5), then plug-flow enters anoxic pond (3),
Three, the water processed through second pond (7) is discharged by water port (13), and remaining mud is discharged by mud valve (14); Namely waste water enhanced nitrogen removal dephosphorization is completed;
Wherein, the dissolved oxygen concentration of anaerobic pond (2) is less than 0.2mg/L, the dissolved oxygen concentration of anoxic pond (3) is 0.2 ~ 0.5mg/L, deep well aeration pond (4) middle part dissolved oxygen concentration is 3.2mg/L; The hydraulic detention time of anoxic pond (3) is 1.0 ~ 3.0h, the hydraulic detention time of anaerobic pond (2) is 1.0 ~ 3.0h, the hydraulic detention time in deep well aeration pond (4) is 0.5 ~ 2.0h, the hydraulic detention time of second pond (7) is 2.5h, and the hydraulic detention time in the first degassed pond (5) and the second degassed pond (6) is 0.5h; The return sludge ratio being back to the first degassed pond (5) by second pond (7) is 50% ~ 100%, and the mixed liquid recycle ratio being back to the first degassed pond (5) by deep well aeration pond (4) is 100% ~ 300%.
4. the method for waste water enhanced nitrogen removal dephosphorization according to claim 3, it is characterized in that step one middle-deep well aeration tank (4) interior active sludge is tamed by the following method: second pond mud Sewage Plant fetched and fresh sewage are poured in deep well aeration pond (4), opening aerating apparatus (4-1) is cultivate 10d under the condition of about 25 DEG C in temperature, namely obtains the active sludge of having tamed.
5. the method for waste water enhanced nitrogen removal dephosphorization according to claim 3, is characterized in that the rotating speed of agitator in anoxic pond in step 2 (3) is 30r/min ~ 50r/min; In anaerobic pond (2), the rotating speed of agitator is 30r/min ~ 50r/min; In second degassed pond (6), the rotating speed of agitator is 30r/min ~ 50r/min; In first degassed pond (5), the rotating speed of agitator is 30r/min ~ 50r/min.
6. the method for waste water enhanced nitrogen removal dephosphorization according to claim 3, is characterized in that in deep well aeration pond (4), anaerobic pond (2) and anoxic pond (3), adding biofilm packing in step 2.
7. the method for waste water enhanced nitrogen removal dephosphorization according to claim 3, is characterized in that in step 2, steam-water ratio is 1.2 ~ 1.5:1 in deep well aeration pond (4).
8. the method for waste water enhanced nitrogen removal dephosphorization according to claim 4, it is characterized in that the COD value of fresh sewage in step one is 215mg/L ~ 550mg/L, ammonia nitrogen value is 32mg/L ~ 55mg/L, and total values of nitrogen might is 38mg/L ~ 62mg/L, and total phosphorus value is 3.9mg/L ~ 7.4mg/L.
9. the method for waste water enhanced nitrogen removal dephosphorization according to claim 3, it is characterized in that the sewage in water tank in step 2 (1) enters anaerobic pond (2) and anoxic pond (3) respectively, anaerobic pond (2) is 1:2,1:1 or 2:1 with the flooding quantity ratio of anoxic pond (3).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107986444A (en) * | 2017-12-27 | 2018-05-04 | 深圳市华宇创鑫环境科技有限公司 | Integrated sewage treating apparatus and sewage water treatment method |
| CN111115821A (en) * | 2020-01-20 | 2020-05-08 | 青岛思普润水处理股份有限公司 | MBBR-based autotrophic nitrogen removal integrated system and quick starting method |
| CN111847791A (en) * | 2020-07-29 | 2020-10-30 | 中生源(海南)生态环境发展有限公司 | Deep well ecological pond |
| CN115180765A (en) * | 2022-08-17 | 2022-10-14 | 成都理工大学 | Underground water circulating well temperature control method, system and device |
| CN117509913A (en) * | 2023-12-26 | 2024-02-06 | 上海水合环境工程有限公司 | Multi-point reflux AO device and process for intensive advanced treatment of organic nitrogen sewage |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203428979U (en) * | 2013-08-13 | 2014-02-12 | 青岛银河环保股份有限公司 | Deep-well aeration device |
| CN204097179U (en) * | 2014-09-25 | 2015-01-14 | 扬州天朗水务设备有限公司 | Biological fluidized bed |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203428979U (en) * | 2013-08-13 | 2014-02-12 | 青岛银河环保股份有限公司 | Deep-well aeration device |
| CN204097179U (en) * | 2014-09-25 | 2015-01-14 | 扬州天朗水务设备有限公司 | Biological fluidized bed |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107986444A (en) * | 2017-12-27 | 2018-05-04 | 深圳市华宇创鑫环境科技有限公司 | Integrated sewage treating apparatus and sewage water treatment method |
| CN111115821A (en) * | 2020-01-20 | 2020-05-08 | 青岛思普润水处理股份有限公司 | MBBR-based autotrophic nitrogen removal integrated system and quick starting method |
| CN111115821B (en) * | 2020-01-20 | 2023-08-25 | 青岛思普润水处理股份有限公司 | Autotrophic nitrogen removal integrated system based on MBBR and quick starting method |
| CN111847791A (en) * | 2020-07-29 | 2020-10-30 | 中生源(海南)生态环境发展有限公司 | Deep well ecological pond |
| CN115180765A (en) * | 2022-08-17 | 2022-10-14 | 成都理工大学 | Underground water circulating well temperature control method, system and device |
| CN115180765B (en) * | 2022-08-17 | 2024-03-19 | 成都理工大学 | Underground water circulation well temperature control method, system and device |
| CN117509913A (en) * | 2023-12-26 | 2024-02-06 | 上海水合环境工程有限公司 | Multi-point reflux AO device and process for intensive advanced treatment of organic nitrogen sewage |
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