CN104108794B - A kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration and method - Google Patents
A kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration and method Download PDFInfo
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Abstract
Present invention relates particularly to a kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration and method.Described device is provided with regulating reservoir, sbr reactor pond；Sbr reactor pond is divided into anoxic zone and aerobic zone.Utilize the method that this wastewater treatment equipment processes waste water, including step in detail below: (1) waste water enters regulating reservoir；(2) waste water of regulating reservoir pumps into anoxic zone, sbr reactor pond by intake pump and carries out Denitrification；(3) the current overflow of anoxic zone, sbr reactor pond is to aerobic zone, sbr reactor pond, linkage water inlet；Aerobic zone, sbr reactor pond uses the SBR method of operation, carries out short distance nitration effect；The fill phase of aerobic zone, the sbr reactor pond muddy water that simultaneously refluxes is to anoxic zone, and aerobic zone water inlet end i.e. stops backflow, and anoxic zone water outlet overflow, to aerobic zone, so circulates, and the carbon source made full use of in waste water carries out Denitrification in anoxic zone, sbr reactor pond.
Description
Technical field
The present invention relates to wastewater treatment equipment, be specifically related to a kind of batch-type A/O realizing waste water short distance nitration
Linked system wastewater treatment equipment and method.
Background technology
Along with increasing the weight of of body eutrophication and water shortage problem, the strictest to sewage drainage standard
Control, especially more and more higher to the emission request of nitrogen, phosphorus.
The biological denitrificaion mode being most widely used in existing sewage disposal is nitrification/denitrification technology, it is adaptable to
Process the city domestic sewage of low concentration.Wherein nitrification is mainly completed by two steps, first NH4+-N is at ammonia nitrogen oxygen
Change and be converted into NO under the effect of antibacterial (AOB)2--N, this step is referred to as Nitritation；Then NO2-
-N is converted into NO under nitrite-oxidizing bacteria (NOB) acts on3--N, this step is referred to as nitric acid nitrating.
In denitrification process, need consume carbon source and produce certain basicity, by NO3--N is converted into NO2--N is final
It is converted into N2.But when processing such as the high ammonia-nitrogen wastewater such as percolate, anaerobic digestion solution, due to carbon in former water
Nitrogen ratio is relatively low, needs additional carbon in denitrification process, and the time of staying is generally higher than 10 days, and ton water power consumes
More than 20 degree.Therefore, this technique occupation of land scale is big, medicine consumes and energy consumption is higher, cost of sewage disposal is higher.
High ammonia-nitrogen wastewater have pollutant component compared with complicated, pollutant levels compared with high, discharge capacity big, biodegradability
Difference, the feature that intractability is high, paid much attention to by various countries' field of Environment Protection.The efficient life of high ammonia-nitrogen wastewater
Difficult point that thing denitrogenation is always in sewage disposal and emphasis.At present, domestic and international sewage treatment area has occurred
The report of more and more New Biodenitrification Process, such as short distance nitration.Short distance nitration and tradition nitrification-denitrification
Technology is compared, and saves 25% oxygen demand during having the advantage that short distance nitration；Follow-up denitrification process
In can save 40% carbon source；Need not consume organic carbon source in follow-up anaerobic ammonium oxidation process, ammonia nitrogen removal frank is relatively
High.
Key one step of short distance nitration is that ammonia nitrogen is converted into nitrous under the effect of nitrite bacteria (AOB)
Hydrochlorate, the most how " suppression-limit-eluriate " NOB does not affect AOB activity simultaneously becomes and realizes high concentration
The key of ammonia nitrogen waste water short-cut nitrification technology usefulness.Affect the parameter of short distance nitration mainly have temperature, dissolved oxygen,
The water conservancy time of staying, pH, free ammonia (Free Ammonia, FA), free nitrous acid (Free nitrous acid,
FNA) etc..The existing method realizing short distance nitration have control parameter is more, operation sequence is complicated, want
Influent quality is asked to stablize, need to add the shortcomings such as a small amount of organic carbon source or soda acid.Therefore, compel to be essential in this area
Want a kind of simple to operate, easily controllable shortcut nitration of high ammonia nitrogen wastewater pretreatment unit.
Summary of the invention
The primary and foremost purpose of the present invention is that the shortcoming overcoming prior art is with not enough, it is provided that it is short that one realizes waste water
Batch-type A/O linked system (the SAON:Sequencing Anoxic-oxic Nitritation) waste water of journey nitrification
Processing means, this process waste plant is applicable to shortcut nitration of high ammonia nitrogen wastewater pretreatment, mainly kitchen rubbish
Rubbish Digestive system, percolate, sludge digestion supernatant, food industrial wastewater, herding waste water, chemical industry are useless
Water etc..
Another object of the present invention is to provide the method applying above-mentioned wastewater treatment equipment to process waste water.
It is still another object of the present invention to provide the application of above-mentioned wastewater treatment equipment.
The purpose of the present invention is achieved through the following technical solutions:
A kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration, be provided with regulating reservoir,
Sbr reactor pond, described sbr reactor pond includes anoxic zone, sbr reactor pond and aerobic zone, sbr reactor pond；
Described regulating reservoir passes sequentially through intake pump and first liquid effusion meter with anoxic zone, sbr reactor pond even
Logical；
Described anoxic zone, sbr reactor pond is connected with aerobic zone, sbr reactor pond by overflow launder；
Described aerobic zone, sbr reactor pond inner bottom part is provided with aeration tube, and described aeration tube passes through gas flow
Meter is connected with aerator；
It is provided with water decanter inside described aerobic zone, sbr reactor pond；
Bottom described aerobic zone, sbr reactor pond by reflux line successively with reflux pump and second liquid flow
Meter connects bottom anoxic zone, sbr reactor pond；
The first agitator and heater it is provided with inside described regulating reservoir；
The second agitator, the first pH meter and ORP meter it is provided with inside described anoxic zone, sbr reactor pond；
The 3rd agitator, the second pH meter, DO meter, liquid level it is provided with inside described aerobic zone, sbr reactor pond
Sensor and temperature sensor；
The volume ratio of described anoxic zone, sbr reactor pond and aerobic zone, sbr reactor pond is 1:(3～5)；
Described the first pH meter, the second pH meter, DO meter, ORP meter, temperature sensor, first liquid
Effusion meter, second liquid effusion meter, liquid level sensor, gas flowmeter are connected with PLC respectively；
Described PLC receives digital signal with by computer and exports the computer of control signal and be connected；
Described PLC respectively with intake pump, aerator, the first agitator, the second agitator, the 3rd stir
Mix device, heater, water decanter, reflux pump connection.
The described batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration is applicable to high ammonia
Nitrogen waste water short distance nitration pretreatment, mainly changing food waste Digestive system, percolate, sludge digestion supernatant
Liquid, food industrial wastewater, herding waste water, wastewater from chemical industry etc..
The above-mentioned batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration is applied to process waste water
Method, including step in detail below:
(1) aerobic zone, sbr reactor pond and anoxic zone are injected with nitrifying sludge for seed sludge；Open regulating reservoir
The first agitator, waste water is loaded in regulating reservoir；
(2) waste water in regulating reservoir pumps into anoxic zone, sbr reactor pond by intake pump, opens SBR simultaneously
Second agitator of reaction tank anoxic zone, carries out Denitrification；
(3) when anoxic zone, sbr reactor pond current start overflow to aerobic zone, use SBR to run and start
Aerobic zone, sbr reactor pond, carries out short distance nitration effect:
1. water inlet-aeration (reaction) stage: the mode taking unlimited aeration-intermittent water inflow is anti-by SBR
The current overflow of Ying Chi anoxic zone to aerobic zone, open the 3rd agitator and start aerobic zone, sbr reactor pond with
Reflux pump between anoxic zone；During this, monitor anoxic zone by the pH meter of aerobic zone, sbr reactor pond
Water inlet, make the pH of aerobic zone, sbr reactor pond maintain 6.5～7.9；In aerobic zone, sbr reactor pond
DO maintains 1mg/L；Reflux ratio is 3, can finely tune according to practical situation；
Follow-up aeration phase: when inflow reaches at or above level set value, stops water inlet but continues aeration；
3. precipitate phase: follow-up aeration phase stops the 3rd agitator, closing volume pump after terminating, and sinks
Form sediment；
4. bleeding stage: use water decanter to control draining by level sensor monitors；
5. sbr reactor pond enters next one circulation: repeat step 1., 2., 3. and 4., hydraulic detention time
1d is progressively reduced to from 2d；
Described waste water is high ammonia-nitrogen wastewater, NH4 in described high ammonia-nitrogen wastewater+-N concentration is more than 500
Mg/L, BOD5/ TN is less than 3～5；
Described high ammonia-nitrogen wastewater be preferably changing food waste Digestive system, percolate, sludge digestion supernatant,
Food industrial wastewater, herding waste water, wastewater from chemical industry；
In step (3), the temperature of aerobic zone, sbr reactor pond is 30～40 DEG C, when temperature is less than 30 DEG C, opens
The firing equipment of dynamic regulating reservoir, when temperature is higher than 40 DEG C, stops the firing equipment of regulating reservoir；
In step (3), the temperature of aerobic zone, sbr reactor pond is preferably 35 DEG C；When temperature is less than 35 DEG C, open
The firing equipment of dynamic regulating reservoir, when temperature is higher than 35 DEG C, stops the firing equipment of regulating reservoir；
Step (3) 1. described in unlimited aeration refer to that whole water inlet-aeration (reaction) stage is all carried out
Aeration；
Step (3) 1. described in the pH that mode is aerobic zone, sbr reactor pond of intermittent water inflow maintain 6.5～
7.9, when the pH of sbr reactor pond Aerobic Pond is less than 6.5～7.9, start the water inlet of sbr reactor pond anoxic pond；
When the pH of sbr reactor pond Aerobic Pond is higher than 6.5～7.9, stop the water inlet of anoxic zone, sbr reactor pond；
Step (3) 1. described in the mode of intermittent water inflow be preferably the pH of sbr reactor pond Aerobic Pond and maintain
6.8～7.5；When the pH of sbr reactor pond Aerobic Pond is less than 6.8～7.5, start sbr reactor pond anoxic pond
Water inlet；When the pH of sbr reactor pond Aerobic Pond is higher than 6.8～7.5, stop sbr reactor pond anoxic pond
Water inlet；
Step (3) 2. described in operation time of follow-up aeration phase be 30min～3h, when specifically reflecting
Between depending on concrete；This stage terminates along with nitrosation reaction, basicity consumption, and pH is down to minimum and stable；
Step (3) 3. described in operation time of precipitate phase be 30～60min；
The principle of the present invention:
It is said that in general, FA with FNA in waste water is relevant with the temperature in water and pH, especially, FA's
Concentration becomes positive correlation with the size of pH, and the concentration of FNA becomes inverse correlation therewith.The i.e. pH feelings less than 7
Under condition, biological treatment of waste water system is more readily formed FNA.FA and FNA is the profit in Nitrification
By substrate, also it is " suppression biological agent " simultaneously.Specifically, NOB than AOB more susceptible to both
The impact of material.When FNA concentration is more than 0.02mg/L, or when FA concentration is more than 6mg/L, NOB's
Building-up process stops completely.FNA is 0.42～1.72mg/L to 50% inhibition concentration of AOB.
The invention provides a kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration
The method processing waste water: high ammonia-nitrogen wastewater enters regulating reservoir；The waste water of regulating reservoir pumps into SBR by intake pump
Reaction tank anoxic zone carries out Denitrification；The current overflow of sbr reactor pond anoxic pond is good to sbr reactor pond
Oxygen district, linkage water inlet；Aerobic zone, sbr reactor pond uses the SBR method of operation, carries out short distance nitration effect；
The fill phase of aerobic zone, sbr reactor pond refluxes simultaneously, and to anoxic zone, (reflux ratio is 3 to muddy water, according to actual feelings
Condition can be finely tuned), the follow-up aeration in aerobic zone terminates i.e. to stop backflow, anoxic zone water outlet overflow to aerobic zone,
So circulation, the carbon source made full use of in waste water carries out Denitrification in anoxic zone, sbr reactor pond.
In order to realize stable nitrosification, it is necessary to the growth of the NOB of suppression aerobic zone, sbr reactor pond.
In a cycle of operation of aerobic zone, sbr reactor pond, the concentration of FNA and FA is respectively 0.2～2.8mg/L
With 0.02～1.7mg/L.Wherein, the highest FA concentration 1.7mg/L does not completely inhibit NOB；Minimum FNA
Concentration 0.2mg/L is far longer than the full inhibition concentrations of NOB.Therefore, during FNA is native system, success is real
The key of existing nitrosification.Every SBR cycle of operation start and at the end of, FNA concentration is all higher than 2mg/L,
Clearly inhibit the growth of AOB.This is consistent with DO concentration change trend, shows that AOB is by complete
Full suppression, Nitrification temporarily ceases, and DO is almost without consumption, and therefore DO is at every SBR cycle of operation
Start and at the end of suddenly increase (Fig. 4, Fig. 5).
The present invention has such advantages as relative to prior art and effect:
(1) sludge concentration MLSS is not limited in the startup, operation of whole reactor；
(2) batch-type A/O linked system can effectively carry out nitrosation reaction, and technical operation flow is simple, anti-
Ammonia nitrogen loading impact capacity is strong；
(3) utilize the pH of fill phase in SBR running indirectly to control, directly controlled by FNA
Realize and maintain stable nitrosification；
(4) use PLC control system, run simplicity, control accurately；
(5) take full advantage of the organic carbon in former water, decrease the Organic substance impact on follow-up nitrosification,
And quickly starting and stablize the short distance nitration effect of high ammonia-nitrogen wastewater, nitrosoation rate is up to more than 95%.
Accompanying drawing explanation
Fig. 1 is the batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration of the present invention
Structural representation, wherein: 1. regulating reservoir；2.SBR reaction tank anoxic zone；3.SBR reaction tank aerobic zone；1.1.
First liquid effusion meter；1.2. intake pump；1.3. the first agitator；1.4. heater；2.1. the first pH meter；
2.2.ORP meter；2.3. the second agitator；2.4. overflow launder；3.1 the 3rd agitators；3.2. the second pH meter；3.3.DO
Meter；3.4. liquid level sensor；3.5. aeration tube；3.6. temperature sensor；3.7. water decanter；3.8. gas flowmeter；
3.9. aerator；3.10. reflux pump；3.11. reflux line；3.12. second liquid effusion meter.
Fig. 2 is the batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration of the present invention
PLC On-line Control explanatory diagram.
Fig. 3 is the batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration of the present invention
PLC On-line Control flow chart.
PH and DO in sbr reactor pond aerobic zone one cycle when Fig. 4 is system stable operation in embodiment 2
Changing trend diagram.
FNA and FA in sbr reactor pond aerobic zone one cycle when Fig. 5 is system stable operation in embodiment 2
Changing trend diagram.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but the embodiment party of the present invention
Formula is not limited to this.
Embodiment 1
As it is shown in figure 1, a kind of batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration,
Being provided with regulating reservoir 1 and sbr reactor pond 2,3, described sbr reactor pond 2,3 includes sbr reactor pond
Anoxic zone 2 and aerobic zone, sbr reactor pond 3；
Described regulating reservoir 1 passes sequentially through intake pump 1.2 and first liquid effusion meter 1.1 lacks with sbr reactor pond
Oxygen district 2 connects；
Described anoxic zone, sbr reactor pond 2 is connected with aerobic zone, sbr reactor pond 3 by overflow launder 2.4；
Described aerobic zone 3, sbr reactor pond inner bottom part is provided with aeration tube 3.5, and described aeration tube 3.5 passes through
Gas flowmeter 3.8 is connected with aerator 3.9；
Described aerobic zone 3, sbr reactor pond is internal is provided with water decanter 3.7；
Bottom described aerobic zone, sbr reactor pond 3 by reflux line 3.11 successively with reflux pump 3.10 and the
Two fluid flowmeters 3.12 connect bottom anoxic zone, sbr reactor pond 2；
Described regulating reservoir 1 is internal is provided with the first agitator 1.3 and heater 1.4；
Described anoxic zone, sbr reactor pond 2 and the volume ratio of aerobic zone, sbr reactor pond 3 be 1:(3～
5)；
Described anoxic zone 2, sbr reactor pond is internal is provided with second agitator the 2.3, first pH meter 2.1 and ORP
Meter 2.2；
Described aerobic zone 3, sbr reactor pond is internal is provided with the 3rd agitator the 3.1, second pH meter 3.2, DO
Meter 3.3, liquid level sensor 3.4 and temperature sensor 3.6；
As in figure 2 it is shown, first described pH meter the 2.1, second pH meter 3.2, DO meter 3.3, ORP meter
2.2, temperature sensor 3.6, first liquid effusion meter 1.1, second liquid effusion meter 3.12, liquid level sensor
3.4, gas flowmeter 3.8 is connected with PLC respectively；
Described PLC is connected with computer, receives digital signal by computer and exports control signal；
Described PLC respectively with intake pump 1.2, aerator the 3.9, first agitator the 1.3, second agitator
2.3, the 3rd agitator 3.1, heater 1.4, water decanter 3.7, reflux pump 3.10 connect.
The above-mentioned batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration is applied to process waste water
Method (Fig. 3), including step in detail below:
(1) aerobic zone, sbr reactor pond 3 and anoxic zone 2 are injected with nitrifying sludge for seed sludge；Open regulation
First agitator 1.3 in pond 1, loads waste water in regulating reservoir 1；
(2) waste water in regulating reservoir 1 pumps into anoxic zone, sbr reactor pond 2 by intake pump 1.2, opens simultaneously
Second agitator 2.3 of anoxic zone, sbr reactor pond 2, carries out Denitrification；
(3) when anoxic zone 2, sbr reactor pond current start overflow to aerobic zone 3, use SBR to run and open
Dynamic aerobic zone, sbr reactor pond 3, carries out short distance nitration effect:
1. water inlet-aeration (reaction) stage: the mode taking unlimited aeration-intermittent water inflow is anti-by SBR
Ying Chi anoxic zone 2 current to aerobic zone 3 by overflow launder 2.4 overflow, are opened the 3rd agitator 3.1 and start
Reflux pump 3.10 between aerobic zone, sbr reactor pond 3 and anoxic zone 2；During this, by sbr reactor pond
Second pH meter 3.2 of aerobic zone 3 monitors the water inlet of anoxic zone 2, makes the pH of sbr reactor pond Aerobic Pond 3 maintain
6.5～7.9；DO in aerobic zone, sbr reactor pond 3 maintains 1mg/L；Reflux ratio is 3, according to reality
Border situation can be finely tuned；
Follow-up aeration phase: when inflow reaches at or above level set value, stops water inlet but continues aeration；
3. precipitate phase: follow-up aeration phase terminate after stop the 3rd agitator 3.1, closing volume pump 3.10,
Precipitate；
4. bleeding stage: use water decanter 3.7 to control draining by liquid level sensor 3.4 monitoring；
5. sbr reactor pond enters next one circulation: repeat step 1., 2., 3. and 4., hydraulic detention time
1d is progressively reduced to from 2d；
Described waste water is high ammonia-nitrogen wastewater, NH4 in described high ammonia-nitrogen wastewater+-N concentration is more than 500
Mg/L, BOD5/ TN is less than 3～5；
Described high ammonia-nitrogen wastewater be preferably changing food waste Digestive system, percolate, sludge digestion supernatant,
Food industrial wastewater, herding waste water, wastewater from chemical industry；
In step (3), the temperature of aerobic zone, sbr reactor pond 3 is 30～40 DEG C, when temperature is less than 30 DEG C, opens
The firing equipment 1.4 of dynamic regulating reservoir, when temperature is higher than 40 DEG C, stops the firing equipment of regulating reservoir；
In step (3), the temperature of aerobic zone, sbr reactor pond 3 is preferably 35 DEG C；When temperature is less than 35 DEG C, open
The firing equipment 1.4 of dynamic regulating reservoir, when temperature is higher than 35 DEG C, stops the firing equipment of regulating reservoir；
Step (3) 1. described in unlimited aeration refer to that whole water inlet-aeration (reaction) stage is all carried out
Aeration；
Step (3) 1. described in the pH that mode is aerobic zone, sbr reactor pond of intermittent water inflow maintain 6.5～
7.9, when the pH of aerobic zone, sbr reactor pond is less than 6.5～7.9, start the water inlet of anoxic zone, sbr reactor pond；
When the pH of sbr reactor pond Aerobic Pond is higher than 6.5～7.9, stop the water inlet of anoxic zone, sbr reactor pond；
Step (3) 1. described in the mode of intermittent water inflow be preferably the pH of aerobic zone, sbr reactor pond and maintain
6.8～7.5；When the pH of sbr reactor pond Aerobic Pond is less than 6.8～7.5, start anoxic zone, sbr reactor pond
Water inlet；When the pH of aerobic zone, sbr reactor pond is higher than 6.8～7.5, stop anoxic zone, sbr reactor pond
Water inlet；
Step (3) 2. described in operation time of follow-up aeration phase be 30min～3h, when specifically reflecting
Between depending on concrete；This stage terminates along with nitrosation reaction, basicity consumption, and pH is down to minimum and stable；
Step (3) 3. described in operation time of precipitate phase be 30～60min.
Embodiment 2
Use the batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration of the present invention
With disposal methods waste water, wherein the size of regulating reservoir is B × H × L=470 × 500 × 440cm, total measurement (volume)
For 103,400L.The size of anoxic zone, sbr reactor pond is 470 × 500 × 440cm, dischargeable capacity 100,000L；
The size of aerobic zone is 470 × 500 × 1540cm, and dischargeable capacity is 350000L.
Taking the percolate of Xiaping Solid Waste Dumping Ground, Shenzhen City, its pH is 8.01～8.65, NH4 +-N
At concentrations up to 1500～3000mg/L, BOD5/ TN is less than 3～5, for typical high-concentration ammonia-nitrogen low-carbon and nitrogen
Compare waste water.
(1) sbr reactor pond is injected with the nitrifying sludge of Xia Ping percolate treatment plant of Shenzhen for seed sludge good
Oxygen district and anoxic zone, sludge concentration is 2500kg MLSS/m3；Open the first agitator (300 of regulating reservoir
Turn/h), percolate is loaded in regulating reservoir；
(2) waste water in regulating reservoir pumps into anoxic zone, sbr reactor pond by intake pump, opens SBR simultaneously
Second agitator (300 turns/h) of reaction tank anoxic zone, carries out Denitrification；
(3) when anoxic zone, sbr reactor pond is overflowed, use SBR to run and start aerobic zone, sbr reactor pond,
Carry out short distance nitration effect:
1. water inlet-aeration (reaction) stage: the mode taking unlimited aeration-intermittent water inflow is anti-by SBR
The current overflow of Ying Chi anoxic zone, to aerobic zone, is opened the 3rd agitator (300 turns/h) and starts sbr reactor
Reflux pump (reflux ratio is 3) between aerobic zone, pond and anoxic zone；During this, good by sbr reactor device
The water inlet of the pH meter monitoring anoxic zone in oxygen district: when the pH of aerobic zone, sbr reactor pond is less than 6.8～7.5, open
The water inlet of dynamic anoxic zone, sbr reactor pond, when the pH of aerobic zone, sbr reactor pond is higher than 6.8～7.5, stops
The water inlet of anoxic zone, sbr reactor pond；The temperature of aerobic zone, sbr reactor pond is 30～35 DEG C, when temperature is less than
30 DEG C, start the firing equipment of regulating reservoir, when temperature is higher than 35 DEG C, stop the firing equipment of regulating reservoir；
Intrasystem DO maintains 1mg/L；
Follow-up aeration phase: when inflow reaches at or above level set value, stops water inlet but continues to expose
Gas；This stage terminates along with nitrosation reaction, basicity consumption, and pH is down to minimum and is stabilized to 2, and the time is 1
h；
3. precipitate phase: follow-up aeration phase stops the 3rd agitator, closing volume pump after terminating, and sinks
Forming sediment, the time is 30min；
4. bleeding stage, uses water decanter to control draining by level sensor monitors；
5. sbr reactor pond enters next one circulation: repeat step 1., 2., 3. and 4., hydraulic detention time
1d is progressively reduced to from 2d.
When Fig. 4 is the present embodiment system stable operation, pH and DO in sbr reactor pond aerobic zone one cycle becomes
Change trendgram, when Fig. 5 is the present embodiment system stable operation the FNA in sbr reactor pond aerobic zone one cycle and
FA changing trend diagram.It can be seen that in a cycle of operation of aerobic zone, sbr reactor pond, FNA
It is respectively 0.2～2.8mg/L and 0.02～1.7mg/L with the concentration of FA.Wherein, the highest FA concentration 1.7mg/L
Do not completely inhibit NOB；Minimum FNA concentration 0.2mg/L is far longer than the full inhibition concentrations of NOB.
Therefore, the key of nitrosification is successfully realized during FNA is native system.Every SBR cycle of operation starts and ties
Shu Shi, FNA concentration is all higher than 2mg/L, it will be apparent that inhibit the growth of AOB.This is with DO concentration
Variation tendency is consistent, shows that AOB is completely inhibited, and Nitrification temporarily ceases, and DO is almost without disappearing
Consumption, therefore DO every SBR cycle of operation start and at the end of suddenly increase.
After system is run 1 month, operational effect is stable, test result indicate that: aerobic zone, sbr reactor pond intakes
NH4 +-N load ALR is up to 3kg NH4 +-N/m3D, NO2--N accumulation rate is up to more than 95%.This system has
Body Inlet and outlet water water quality is as shown in table 1:
Table 1 realizes the batch-type A/O linked system wastewater treatment equipment of waste water short distance nitration
Inlet and outlet water water quality parameter compares
Above-described embodiment is the present invention preferably embodiment, but embodiments of the present invention are not by above-mentioned reality
Execute the restriction of example, the change made under other any spirit without departing from the present invention and principle, modification,
Substitute, combine, simplify, all should be the substitute mode of equivalence, within being included in protection scope of the present invention.
Claims (9)
1. an application realizes the batch-type A/O linked system wastewater treatment equipment of waste water short distance nitration and processes
The method of waste water,
The described batch-type A/O linked system wastewater treatment equipment realizing waste water short distance nitration, is provided with regulation
Pond, sbr reactor pond, described sbr reactor pond includes that anoxic zone, sbr reactor pond and sbr reactor pond are good
Oxygen district；
Described regulating reservoir passes sequentially through intake pump and first liquid effusion meter with anoxic zone, sbr reactor pond even
Logical；
Described anoxic zone, sbr reactor pond is connected with aerobic zone, sbr reactor pond by overflow launder；
Described aerobic zone, sbr reactor pond inner bottom part is provided with aeration tube, and described aeration tube passes through gas stream
Gauge is connected with aerator；
It is provided with water decanter inside described aerobic zone, sbr reactor pond；
Bottom described aerobic zone, sbr reactor pond by reflux line successively with reflux pump and second liquid stream
Gauge connects bottom anoxic zone, sbr reactor pond；
It is provided with the 3rd agitator and the second pH meter inside described aerobic zone, sbr reactor pond；
The first agitator it is provided with inside described regulating reservoir；
It is provided with the second agitator inside described anoxic zone, sbr reactor pond；
It is characterized in that described method includes step in detail below:
(1) aerobic zone, sbr reactor pond and anoxic zone are injected with nitrifying sludge for seed sludge；Open regulation
First agitator in pond, loads waste water in regulating reservoir；
(2) waste water in regulating reservoir pumps into anoxic zone, sbr reactor pond by intake pump, opens SBR simultaneously
Second agitator of reaction tank anoxic zone, carries out Denitrification；
(3) when anoxic zone, sbr reactor pond current start overflow to aerobic zone, use SBR to run and start
Aerobic zone, sbr reactor pond, carries out short distance nitration effect:
1. water inlet-aeration phase: take the mode of unlimited aeration-intermittent water inflow by sbr reactor pond anoxia
District's current overflow, to aerobic zone, is opened the 3rd agitator and starts aerobic zone, sbr reactor pond and anoxic zone
Between reflux pump；During this, monitored the water inlet of anoxic zone by the pH meter of aerobic zone, sbr reactor pond,
The pH making aerobic zone, sbr reactor pond maintains 6.5～7.9；DO in aerobic zone, sbr reactor pond maintains
At 1mg/L, reflux ratio is 3～5；
Follow-up aeration phase: when inflow reaches at or above level set value, stops water inlet but continues aeration；
3. precipitate phase: follow-up aeration phase stops the 3rd agitator, closing volume pump after terminating, and sinks
Form sediment；
4. bleeding stage: use water decanter to control draining by level sensor monitors；
5. sbr reactor pond enters next one circulation: repeat step 1., 2., 3. and 4., hydraulic detention time
1d is progressively reduced to from 2d.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
It is provided with heater inside described regulating reservoir.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
The first pH meter and ORP meter it is provided with inside described anoxic zone, sbr reactor pond.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
DO meter, liquid level sensor and temperature sensor it is provided with inside described aerobic zone, sbr reactor pond.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
The volume ratio of described anoxic zone, sbr reactor pond and aerobic zone, sbr reactor pond is 1:(3～5).
6. the batch-type A/O of waste water short distance nitration is realized according to the application described in any one of claim 2～4
Linked system wastewater treatment equipment processes the method for waste water, it is characterised in that:
Described the first pH meter, the second pH meter, DO meter, ORP meter, temperature sensor, first liquid
Effusion meter, second liquid effusion meter, liquid level sensor, gas flowmeter are connected with PLC respectively；
Described PLC is connected with computer, receives digital signal by computer and exports control signal；
Described PLC respectively with intake pump, aerator, the first agitator, the second agitator, the 3rd stir
Mix device, heater, water decanter, reflux pump connection.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
In step (3), the temperature of aerobic zone, sbr reactor pond is 30～40 DEG C；When temperature is less than 30 DEG C,
Start the firing equipment of regulating reservoir, when temperature is higher than 40 DEG C, stop the firing equipment of regulating reservoir.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
Step (3) 1. described in unlimited aeration refer to that whole water inlet-aeration phase all carries out aeration；
Step (3) 1. described in the pH that mode is aerobic zone, sbr reactor pond of intermittent water inflow maintain
6.5～7.9, when the pH of aerobic zone, sbr reactor pond is less than 6.5～7.9, start anoxic zone, sbr reactor pond
Water inlet；When the pH of aerobic zone, sbr reactor pond is higher than 6.5～7.9, stop anoxic zone, sbr reactor pond
Water inlet.
Application the most according to claim 1 realizes the batch-type A/O linked system of waste water short distance nitration
Wastewater treatment equipment processes the method for waste water, it is characterised in that:
Step (3) 2. described in operation time of follow-up aeration phase be 30min～3h；
Step (3) 3. described in operation time of precipitate phase be 30～60min.
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| CN106277313A (en) * | 2016-07-18 | 2017-01-04 | 吉林化工学院 | A kind of energy-saving and cost-reducing sequencing batch activated sludge processes technique and device |
| CN106045045A (en) * | 2016-07-18 | 2016-10-26 | 吉林化工学院 | Energy-saving consumption-lowering shortcut nitrification-denitrification sequence-batch active sludge treatment process and device |
| CN108455730B (en) * | 2017-02-20 | 2021-05-04 | 四川中德盛达环境工程有限公司 | Short-cut nitrification and denitrification integrated biological denitrification device |
| CN106966506A (en) * | 2017-05-23 | 2017-07-21 | 上海华畅环保设备发展有限公司 | A kind of SBR method of wastewater treatment and device that carbon is released including online eddy flow |
| CN109592849A (en) * | 2018-12-28 | 2019-04-09 | 新疆环境工程技术有限责任公司 | A kind of cold district integrated high-efficiency modified form SBR integrated treatment process |
| CN109626759A (en) * | 2019-01-30 | 2019-04-16 | 河海大学 | A kind of circulating the ecology pond systems of full section and method handling agriculture stain disease |
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| CN103819000B (en) * | 2014-02-26 | 2015-06-24 | 北京首钢国际工程技术有限公司 | AO/SBR system and process for enhanced nitrogen removal |
| CN204151139U (en) * | 2014-08-11 | 2015-02-11 | 吕慧 | A kind of sequence batch (A/O linked system wastewater treatment equipment realizing waste water short distance nitration |
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