CN105906048A - Full autotrophic denitrification granular sludge preparation device and preparation method - Google Patents
Full autotrophic denitrification granular sludge preparation device and preparation method Download PDFInfo
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- CN105906048A CN105906048A CN201610365061.7A CN201610365061A CN105906048A CN 105906048 A CN105906048 A CN 105906048A CN 201610365061 A CN201610365061 A CN 201610365061A CN 105906048 A CN105906048 A CN 105906048A
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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
- 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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- 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
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention discloses a full autotrophic denitrification granular sludge preparation device which comprises a reactor, a water feed tank, a water discharge tank, a pH regulating box, an adjustable-speed motor and a water bath, wherein the reactor is composed of an inner cavity and an outer cavity; the water feed tank and water discharge tank communicate with the inner cavity of the reactor; a detecting head of the pH regulating box extends into the inner cavity of the reactor; the adjustable speed motor is connected with a stirring paddle; the stirring paddle extends into the inner cavity of the reactor; and the water bath and the outer cavity of the reactor form a circulation loop through a pipeline; and the inner cavity is divided into a drainage region and a deposition region. The invention also discloses a preparation method of full autotrophic denitrification granular sludge. By adopting the mechanical aeration, the liquid level of the mixed liquid is continuously renewed to contact air, thereby effectively increasing the dissolved oxygen in water; and thus, the atmospheric reaeration is formed to perform oxygenation on the reactor, and meanwhile, the wastewater and sludge are thoroughly mixed, so the device has very high economical efficiency. The method can quickly form the granular sludge with an aerobic outer layer and an anaerobic inner layer, and the denitrification efficiency is 79.40%.
Description
Technical field
The present invention relates to the preparation facilities of a kind of mechanical aeration formula whole process autotrophic denitrification granule sludge, further relate to use above-mentioned
Device prepares the method for whole process autotrophic denitrification granule sludge, belongs to municipal sewage treatment and resource field.
Background technology
Nitrogen content is the important indicator of Water-quality control.Nitrogen content in water body can cause serious eutrophication, danger
Evil aquatic ecosystem etc..High ammonia-nitrogen wastewater complicated component, biodegradability is poor, it is impossible to qualified discharge is still the difficult point that water processes.
High ammonia nitrogen system easily realizes short distance nitration, and system is combined by free ammonia (FA) and free nitrous acid (FNA) and pressed down
System realizes short distance nitration.At present both at home and abroad to the treatment research short distance nitration the most most economical, efficient of high ammonia-nitrogen wastewater with
Anammox (Anammox) process integration.
Short distance nitration and Anammox are combined by Full Autotrophic Ammonium Removal Process, realize in single-reactor, save space,
Full Autotrophic Ammonium Removal Process energy consumption reduces 63%, carbon source reduces 100%, sludge quantity reduces 90%, and advantage is huge.Therewith
Coming, Full Autotrophic Ammonium Removal Process needs strictly to control aeration, it is ensured that the effect of part short distance nitration, forms ammonia nitrogen with nitrite nitrogen about
It it is the ratio of 1: 1.
Traditional Full Autotrophic Ammonium Removal Process all uses blast aeration, and Hu Shi et al. is at China Environmental Science 2014,34
(1): in " integration whole process autotrophic (CANON) performance efficiency and the sludge characteristics " literary composition delivered in 111-117 periodical, at ammonia nitrogen
Under conditions of Concentraton gradient raises, in integration CSTR reactor, achieve integration whole process autotrophic by controlling the modes such as DO
Denitrogenation, without the accumulation of nitrite nitrogen during test, the reactor later stage is the highest ammonia nitrogen removal frank 84.4% under high ammonia nitrogen is intake,
High elimination capacity 0.42kg/ (m3D), the highest nitrogen removal rate 72.0%, the highest elimination capacity 0.35kg/ (m3·d)；Li Dong
Deng deliver in China Environmental Science 2015,35 (1): 72～79 periodicals " mechanical agitation is to CANON mud quick particle
Impact " in a literary composition, use simple sbr reactor device sbr reactor united with aeration and the mechanical agitation device relying on aeration to compare,
Have studied different control modes CANON granular sludge is affected, show to use aeration and churned mechanically SBR faster to realize
Granulation, and granulating phase average nitrogen removal rate is higher, is 83.07%, average total nitrogen volumetric loading is 0.26kgN/m3D,
Illustrate to add stirring action, can quickly realize CANON technique and start, promote nitric efficiency.Blast aeration increases energy consumption, and
Aeration rate is difficult to control, and has much room for improvement in economy.Therefore a kind of employing mechanical aeration formula prepares whole process autotrophic denitrification mud
The exploitation of the apparatus and method of granule is necessary.
Summary of the invention
Goal of the invention: the technical problem to be solved is to provide a kind of mechanical aeration formula whole process autotrophic denitrification granule
The preparation facilities of mud.
The present invention also to solve the technical problem that being to provide the above-mentioned mechanical aeration formula whole process autotrophic denitrification device of employing prepares
The method of nitrogen removal granule sludge.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of preparation facilities of whole process autotrophic denitrification granule sludge, including the reactor being made up of inner chamber body and outer chamber with
And the inlet water tank that connects with reactor inner chamber body and discharge casing, also including pH regulator case, buncher and water-bath, described pH adjusts
The detecting head of joint case stretches in reactor inner chamber body, and described buncher connects stirring paddle, and described stirring paddle stretches in reactor
In cavity, described water-bath forms closed circuit by pipeline with reactor outer chamber；It is divided on described inner chamber body is longitudinal
Catchment and crystallizing field.
Wherein, also include that temperature controller, the detecting head of described temperature controller stretch in water-bath.
Wherein, described catchment is cylinder, and described crystallizing field is cone.
Wherein, being provided with 4 rectangle baffle plates in described catchment, 4 baffle plates are symmetrically set between any two.
The preparation method of a kind of whole process autotrophic denitrification granule sludge, comprises the steps:
Step 1, inoculates a certain amount of Anammox mud and municipal administration Aerobic Pond mud in reactor；
Step 2, introduces in reactor by intake pump by the artificial high ammonia-nitrogen wastewater in inlet water tank, uses pH regulator case to adjust
The pH of joint water inlet is 7～8；It it is 30～32 DEG C by the water temperature of temperature controller regulation reactor；
Step 3, starts stirring, stops stirring after reaction a period of time, is entered in discharge casing by the supernatant after precipitation；
Step 4, is repeated several times the operation of step 2～3, is stepped up stir speed (S.S.) in repetitive process；
Step 5, through cultivating domestication, obtaining external sheath has the Anammox granule sludge of short distance nitration bacterium.
Wherein, in step 1, described Anammox sludge seeding amount is 0.5L, and its concentration is 4.005g/L；Described municipal administration is good
Sludge seeding amount in oxygen pond is 0.5L, and its sludge concentration is 4.097g/L.
Wherein, in step 2, the ammonia nitrogen concentration of described artificial high ammonia-nitrogen wastewater is 400mg/L.
Wherein.In step 3, toward the KHCO of addition 2.5g/L～3g/L in water in course of reaction3。
Wherein, in step 3, initial mixing speed is 40r/min.
Wherein, described flooding time is 20min, and the described response time is 23h, and the described sedimentation time is 20min, described row
The water time is 20min.
Compared with prior art, technical solution of the present invention has the beneficial effect that
First, apparatus of the present invention use mechanical aeration, make mixed liquor liquid level constantly update and air contact, effectively increase
Dissolved oxygen in water, forms air reaeration and reactor is carried out oxygenation, make waste water be sufficiently mixed with mud simultaneously, have high
Economy；
Secondly, it achieves while under the conditions of mechanical aeration, same inside reactor divides short distance nitration and Anammox
Carry out, save space and energy consumption；
Finally, the whole process autotrophic denitrification granule sludge preparation method of the present invention can quickly form outer layer aerobic internal layer anaerobism
Granule sludge, and nitric efficiency is up to 79.40%.
Accompanying drawing explanation
Fig. 1 is the structure principle chart of whole process autotrophic denitrification mud granule preparation facilities of the present invention；
Fig. 2 is the variation diagram of nitric efficiency in whole process autotrophic denitrification granule sludge preparation method running of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, technical scheme is described in further detail.
As shown in Fig. 1～2, the preparation facilities of mechanical aeration formula whole process autotrophic denitrification granule sludge of the present invention, including by interior
Reactor (SBR) 1 that cavity 11 forms with outer chamber 2 and the inlet water tank 5 connected with reactor inner chamber body 11 and discharge casing 8；
Mechanical aeration formula whole process autotrophic denitrification device of the present invention also includes pH regulator case 12, buncher 4 and water-bath 9, pH regulator case
The detecting head of 12 stretches in reactor inner chamber body 11, liquid in pH regulator case 12 real time on-line monitoring reactor inner chamber body 11
PH, regulates the pH of liquid by adding NaOH or HCl of 1mol/L；Buncher 4 connects stirring paddle 3, and stirring paddle 3 stretches into instead
Answering in device inner chamber body 11, the stir speed (S.S.) of stirring paddle 3 carries out speed governing by buncher 4；Water-bath 9 is by pipeline and reactor
Outer chamber 2 forms closed circuit, and water-bath 9 detects the temperature of water in pot by temperature controller 10, and the detecting head of temperature controller 10 stretches into
In water-bath 9, temperature controller 10 keeps water temperature in water-bath 9 to be 30～32 DEG C, and water-bath connects with reactor outer chamber 2, thus
Ensure that the temperature of reactor is also 30～32 DEG C；Being divided into catchment and crystallizing field on inner chamber body 11 is longitudinal, catchment is circle
Cylindricality, crystallizing field is cone；It is provided with 13,4 baffle plates 13 of 4 rectangle baffle plates in catchment to set the most symmetrically
Putting, in reactor 1, current are under the agitation of stirring slurry 3, and due to the barrier effect of 4 baffle plates 13, in making reactor 1, current are acute
Strong agitation, forms hydraulic jump, and makes mixed liquor liquid level constantly update and air contact, increase the dissolved oxygen in water.
Water inlet is delivered in reactor inner chamber body 11 by the water in inlet water tank 5 by intake pump 6, when after reaction completely, stops
Only stirring action, makes sludge settling a period of time in reactor 1, then opens outlet valve 7, and water outlet gravity flow enters discharge casing 8, with
This is 1 cycle.
The preparation method of whole process autotrophic denitrification granule sludge of the present invention, comprises the steps:
Step 1, inoculates 0.5L concentration in reactor and is the Anammox mud of 4.005g/L and 0.5L concentration is
The municipal Aerobic Pond mud of 4.097g/L；
Step 2, introduces in reactor by intake pump by the artificial high ammonia-nitrogen wastewater in inlet water tank, uses pH regulator case to adjust
The pH of joint water inlet is 7～8；It it is 30～32 DEG C by the water temperature of temperature controller regulation reactor；Wherein, the ammonia of artificial high ammonia-nitrogen wastewater
Nitrogen concentration is 400mg/L；
Step 3, starts stirring, adds the KHCO of 2.5g/L～3g/L in water3, stop stirring after reaction a period of time,
Supernatant after precipitation is entered in discharge casing；
Step 4, is repeated several times the operation of step 2～3, is stepped up stir speed (S.S.) in repetitive process；
Step 5, through cultivating domestication, obtaining external sheath has the Anammox granule sludge of short distance nitration bacterium.
The implementation process of the inventive method is: (use human configuration sewage can for the high ammonia-nitrogen wastewater of employing human configuration
The load of alleviator, makes the system more stable), enter in reactor under the effect of intake pump, be inoculated with in reactor
Anammox granule sludge and municipal administration Aerobic Pond mud, react under stirring, and stirring beneficially waste water is complete with mud
Full mixing, along with stir speed (S.S.) increases, the amount of shearing force and oxygen in water increases the most therewith, contributes to being formed closely knit full
Whole process autotrophic denitrification granule sludge.
In operating process, reactor is maintained at 30～32 DEG C operation by water-bath, owing to Anammox mud need to be sternly
Surviving under lattice anaerobic condition, therefore the present invention uses and incrementally increases speed of agitator and improve the concentration into oxygen in water so that
Anammox mud gradually adapts to high concentration dissolved oxygen and shearing force environment, thus it is outside good to contribute to compact grain mud
The formation of oxygen protective layer；In start-up course, arranging influent ammonium concentration is 400mg/L, in the presence of higher concentration free ammonia,
The growth of other microorganisms, beneficially short distance nitration can be suppressed, meanwhile, in course of reaction, in water inlet, add 2.5g/L～3g/
L KHCO3, contribute to quickly forming of granule sludge, read the pH value in reactor by pH regulator case, use 1mol/L's
PH in NaOH and HCl regulation reactor makes it maintain 7.5～8.
After 2 months, granular Anammox mud outer layer can form double oxygen protective layer.After device efficient stable runs,
In water inlet, add actual waste water, after stable, incrementally increase actual waste water proportion in water, until water inlet is all
Actual waste water.
Embodiment 1
Internal dischargeable capacity 2L of reactor 1 (cylindrical catchment 1L, pyramid type settling zone 1L), reactor inner chamber body 11 end
Distance bottom portion and outer chamber 2 is 0.04m, and the outside dimension of reactor 1 is 0.1m, and internal diameter size is 0.08m, reactor 1
External diameter is 1: 2 with height dimension ratio, and stirring slurry 3 radius 0.06m, the distance bottom reactor inner chamber body 11 is 0.063m, gear
Plate 13 height higher than Normal Water Surface 0.03m, inoculate in reactor 1 Anammox mud 0.5L (sludge concentration: 4.005g/L) and
Municipal administration Aerobic Pond mud 0.5L (sludge concentration: 4.097g/L).
The artificial high ammonia-nitrogen wastewater composition of present invention configuration is shown in Table 1:
Table 1 test simulation waste water composition
Wherein the composition of trace element and concentration are shown in Table 2:
Table 2 trace element composition and concentration
NaOH and the HCl regulation inlet flow-patterm using 1mol/L is 7～8.
Artificial wastewater is delivered in reactor by intake pump, and hydraulic detention time distributes, 20min of intaking, and reacts 23h,
Precipitation 20min, draining 20min, whole cycle 24h, time controller, whole-process automatic operating are set.Initial stirring rates is stable
For 40r/min, in reactor, hydrodynamics shear stress is 0.0516N/m2。
After reactor is stable, step up stir speed (S.S.) (each stir speed (S.S.) amplification is 20r/min), increase anti-
Answer dissolved oxygen in device, until stable reaction is run；
When reaction proceeds to 55 days, stir speed (S.S.) controls to be 80r/min, and in reactor, hydrodynamics shear stress is 0.146N/
m2, adhere to one layer of double oxygen bacterium outside anaerobic ammonium oxidation sludge i.e. Anammox mud, maintain reactor to run under which loading, this
Time nitrogen removal rate be up to 79.40%；
In water inlet, add actual waste water, after stable, incrementally increase actual waste water proportion in water, until
Water inlet is all actual waste water.
Obviously, above-described embodiment is only for clearly demonstrating example of the present invention, and not to the present invention
The restriction of embodiment.For those of ordinary skill in the field, can also be made it on the basis of the above description
The change of its multi-form or variation, here without also cannot all of embodiment be given exhaustive, these changes extended out
Change or variation is also among protection scope of the present invention.
Claims (10)
1. the preparation facilities of a whole process autotrophic denitrification granule sludge, it is characterised in that: include being made up of inner chamber body and outer chamber
Reactor and the inlet water tank connected with reactor inner chamber body and discharge casing, also include pH regulator case, buncher and water-bath
Pot, the detecting head of described pH regulator case stretches in reactor inner chamber body, and described buncher connects stirring paddle, and described stirring paddle is stretched
Entering in reactor inner chamber body, described water-bath forms closed circuit by pipeline with reactor outer chamber；Described inner chamber body is longitudinally
On be divided into catchment and crystallizing field.
The preparation facilities of whole process autotrophic denitrification granule sludge the most according to claim 1, it is characterised in that: also include temperature control
Device, the detecting head of described temperature controller stretches in water-bath.
The preparation facilities of whole process autotrophic denitrification granule sludge the most according to claim 1, it is characterised in that: described catchment
In cylinder, described crystallizing field is cone.
The preparation facilities of whole process autotrophic denitrification granule sludge the most according to claim 1, it is characterised in that: described catchment
Inside being provided with 4 rectangle baffle plates, 4 baffle plates are symmetrically set between any two.
5. the preparation method of a whole process autotrophic denitrification granule sludge, it is characterised in that comprise the steps:
Step 1, inoculates a certain amount of Anammox mud and municipal administration Aerobic Pond mud in reactor；
Step 2, is introduced the artificial high ammonia-nitrogen wastewater in inlet water tank in reactor by intake pump, use pH regulator case regulate into
The pH of water is 7～8；It it is 30～32 DEG C by the water temperature of temperature controller regulation reactor；
Step 3, starts stirring, stops stirring after reaction a period of time, is entered in discharge casing by the supernatant after precipitation；
Step 4, is repeated several times the operation of step 2～3, is stepped up stir speed (S.S.) in repetitive process；
Step 5, obtaining external sheath after cultivating domestication has the Anammox granule sludge of short distance nitration bacterium.
The preparation method of whole process autotrophic denitrification granule sludge the most according to claim 5, it is characterised in that: in step 1, institute
Stating Anammox sludge seeding amount is 0.5L, and its concentration is 4.005g/L；Described municipal administration Aerobic Pond sludge seeding amount is 0.5L, its
Sludge concentration is 4.097g/L.
The preparation method of whole process autotrophic denitrification granule sludge the most according to claim 5, it is characterised in that: in step 2, institute
The ammonia nitrogen concentration stating artificial high ammonia-nitrogen wastewater is 400mg/L.
The preparation method of whole process autotrophic denitrification granule sludge the most according to claim 5, it is characterised in that: in step 3, instead
Toward the KHCO of addition 2.5g/L～3g/L in water during Ying3。
The preparation method of whole process autotrophic denitrification granule sludge the most according to claim 5, it is characterised in that: in step 3, just
Beginning mixing speed is 40r/min.
The preparation method of whole process autotrophic denitrification granule sludge the most according to claim 5, it is characterised in that: described water inlet
Time is 20min, and the described response time is 23h, and the described sedimentation time is 20min, and described water discharge time is 20min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106399201A (en) * | 2016-11-10 | 2017-02-15 | 天津工业大学 | High-efficiency enrichment culture method of Pseudomonas aeruginosa |
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