CN204151191U - A kind of wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system - Google Patents
A kind of wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system Download PDFInfo
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- CN204151191U CN204151191U CN201420451028.2U CN201420451028U CN204151191U CN 204151191 U CN204151191 U CN 204151191U CN 201420451028 U CN201420451028 U CN 201420451028U CN 204151191 U CN204151191 U CN 204151191U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 65
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 44
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 239000007788 liquid Substances 0.000 claims description 29
- 238000005273 aeration Methods 0.000 claims description 20
- 238000010992 reflux Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 13
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- 239000010802 sludge Substances 0.000 abstract description 11
- 230000029087 digestion Effects 0.000 abstract description 5
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- 239000010794 food waste Substances 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000006228 supernatant Substances 0.000 abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 22
- 238000006396 nitration reaction Methods 0.000 description 20
- 229910052757 nitrogen Inorganic materials 0.000 description 11
- 238000007034 nitrosation reaction Methods 0.000 description 9
- 241000894006 Bacteria Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 5
- 241001453382 Nitrosomonadales Species 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The utility model relates to wastewater treatment equipment, is specifically related to a kind of wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system.This device is provided with equalizing tank, sbr reactor pond, ceramic filter, MBR/MBBR reaction tank; Described sbr reactor pond comprises oxygen-starved area, sbr reactor pond and aerobic zone, sbr reactor pond; The described wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system is applicable to the process of high ammonia-nitrogen wastewater, mainly changing food waste Digestive system, percolate, sludge digestion supernatant liquor, food industrial wastewater, herding waste water, wastewater from chemical industry etc.
Description
Technical field
The utility model relates to process waste water plant, is specifically related to a kind of wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system.
Background technology
Along with increasing the weight of of body eutrophication and water shortage problem, domestic and international at present sewage drainage standard strictly to be controlled, especially more and more higher to the emission request of nitrogen, phosphorus.
The biological denitrificaion mode be most widely used in existing sewage disposal is nitrated/denitrification technology, is applicable to the city domestic sewage processing lower concentration.Wherein nitratedly to complete primarily of two steps, first NH
4+-N is converted into NO under the effect of ammonium oxidation bacterium (AOB)
2--N, this step is called as Nitritation; Then NO
2--N is converted into NO under nitrite-oxidizing bacteria (NOB) effect
3--N, this step is called as nitric acid nitrating.In denitrification process, need consume carbon source and produce certain basicity, by NO
3--N is converted into NO
2--N is finally converted into N
2.But when processing as the high ammonia-nitrogen wastewater such as percolate, anaerobic digestion solution, because carbon-nitrogen ratio is lower in former water, in denitrification process, need additional carbon, and the residence time is generally greater than 10 days, ton water power consumption more than 20 degree.Therefore, this technique occupation of land scale is large, medicine consumes and energy consumption is higher, cost of sewage disposal is higher.
High ammonia-nitrogen wastewater has pollutant component compared with complicated, Pollutant levels compared with high, that quantity discharged is large, biodegradability is poor, intractability is high feature, is subject to the great attention of various countries' field of Environment Protection.The high-efficiency biological denitrification of high ammonia-nitrogen wastewater is difficult point in sewage disposal and emphasis always.At present, there is the report of more and more New Biodenitrification Process in domestic and international sewage treatment area, such as short distance nitration/.Short distance nitration, compared with traditional nitrification-denitrification technology, has following advantage: save 25% oxygen requirement in short distance nitration process; 40% carbon source can be saved in follow-up denitrification process; Need not consume organic carbon source in follow-up anaerobic ammonium oxidation process, ammonia nitrogen removal frank is higher.
Key one step of short distance nitration is that ammonia nitrogen is converted into nitrite under the effect of nitrite bacteria (AOB), and therefore how " suppress-restriction-eluriate " NOB does not affect AOB activity simultaneously becomes the key realizing high-concentration ammonia nitrogenous wastewater short-cut nitrification technology usefulness.The parameter affecting short distance nitration mainly contains temperature, dissolved oxygen, the water conservancy residence time, pH, free ammonia (Free Ammonia, FA), free nitrous acid (Free nitrous acid, FNA) etc.The existing method realizing short distance nitration has that controling parameters is more, schedule of operation is complicated, requires that influent quality is stablized, needs to add the shortcomings such as a small amount of organic carbon source or soda acid.Therefore, this area in the urgent need to a kind of simple to operate, be easy to control shortcut nitration of high ammonia nitrogen wastewater pretreatment unit.
Utility model content
The purpose of this utility model is that the shortcoming overcoming prior art is with not enough, a kind of wastewater treatment equipment realizing waste water advanced denitrogenation (SAOA:Sequencing Anoxic-oxic System-basedAnammox) based on sequence batch (A/O linked system is provided, this process waste water plant is applicable to shortcut nitration of high ammonia nitrogen wastewater pre-treatment, mainly changing food waste Digestive system, percolate, sludge digestion supernatant liquor, food industrial wastewater, herding waste water, wastewater from chemical industry etc.
The purpose of this utility model is achieved through the following technical solutions:
Realize a wastewater treatment equipment for waste water advanced denitrogenation based on sequence batch (A/O linked system, be provided with equalizing tank, sbr reactor pond, ceramic filter and MBR/MBBR reaction tank; Described sbr reactor pond comprises oxygen-starved area, sbr reactor pond and aerobic zone, sbr reactor pond;
Described equalizing tank is communicated with oxygen-starved area, sbr reactor pond with first liquid under meter by the first intake pump successively;
Described oxygen-starved area, sbr reactor pond is communicated with aerobic zone, sbr reactor pond by overflow groove;
Described aerobic zone, sbr reactor pond inner bottom part is provided with aeration tube; Described aeration tube is connected with aerator by gas meter;
Be communicated with oxygen-starved area, sbr reactor pond with reflux pump, second liquid under meter successively by reflux line bottom described aerobic zone, sbr reactor pond;
Described inside, aerobic zone, sbr reactor pond is provided with water decanter;
Described ceramic filter is communicated with aerobic zone, sbr reactor pond by water decanter;
Described MBR/MBBR reaction tank inside is provided with microbial film, floating stuffing, and described microbial film is connected with water suction pump;
Described MBR/MBBR reaction tank top is provided with water outlet; Described water outlet front is provided with filler grids screen, prevents filler from losing with process current;
Described MBR/MBBR reaction tank is communicated with ceramic filter with the 3rd liquid meter by the second intake pump;
Described equalizing tank inside is provided with the first agitator and first heater;
Described inside, oxygen-starved area, sbr reactor pond is provided with the second agitator, a PH meter and ORP meter;
Described inside, aerobic zone, sbr reactor pond is provided with the 3rd agitator, the 2nd PH meter, DO meter, liquid level sensor and the first temperature sensor;
The volume ratio of described oxygen-starved area, sbr reactor pond and aerobic zone, sbr reactor pond is 1:(3 ~ 5);
Described ceramic filter inside is provided with secondary heating mechanism;
Described MBR/MBBR reaction tank inside is provided with the second temperature sensor;
Described first liquid under meter, a PH meter, ORP meter, the 2nd PH meter, DO meter, liquid level sensor, the first temperature sensor, second liquid under meter, gas meter, the second temperature sensor, the 3rd liquid meter are connected with PLC respectively;
Described PLC with receive numerary signal and the computer exporting control signal is connected; Described PLC is connected with the first intake pump, the first agitator, first heater, the second agitator, the 3rd agitator, aerator, water decanter, reflux pump, secondary heating mechanism, the second intake pump and water suction pump respectively.
The described wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system is applicable to the process of high ammonia-nitrogen wastewater, mainly changing food waste Digestive system, percolate, sludge digestion supernatant liquor, food industrial wastewater, herding waste water, wastewater from chemical industry etc.
The principle of plant running described in the utility model:
The utility model provides a kind of device realizing waste water advanced denitrogenation based on sequence batch (A/O linked system; This device is by following two process process waste water:
(2) nitrosation reaction is started: the waste water of equalizing tank pumps into oxygen-starved area, sbr reactor pond by the first intake pump and carries out denitrification; The current overflow of oxygen-starved area, sbr reactor pond is to aerobic zone, sbr reactor pond, and interlock is intake; Aerobic zone, sbr reactor pond adopts SBR operation scheme, carries out short distance nitration effect; The fill phase of aerobic zone, sbr reactor pond refluxes simultaneously, and to oxygen-starved area, (reflux ratio is 3 to muddy water, can finely tune according to practical situation), namely aerobic zone water inlet end stops backflow, oxygen-starved area water outlet overflow is to aerobic zone, circulation like this, utilizes the carbon source in waste water to carry out denitrification in oxygen-starved area, sbr reactor pond;
(3) Anammox reaction is started: by the nitrosation reaction water outlet (NH in ceramic filter
4 +-N:NO
2--N=1 ~ 1.32) pump into MBR/SBBR reaction tank, temperature maintains 30 ~ 35 DEG C; Microbial film in MBR/MBBR reaction tank or floating stuffing energy effectively catching anaerobic ammonia oxidizing bacteria and denitrifying bacteria, carry out Anammox reaction and anti-nitration reaction simultaneously, denitrifying bacteria can consume the nitric nitrogen that part COD remaining in water inlet and anaerobic ammonia oxidizing bacteria generate, and consumes dissolved oxygen in anaerobic environment for Anammox and provide anaerobic environment.
In order to realize stable nitrosification, the growth of the NOB of aerobic zone, sbr reactor pond must be suppressed.In a cycle of operation of aerobic zone, sbr reactor pond, the concentration of FNA and FA is respectively 0.2 ~ 2.8mg/L and 0.02 ~ 1.7mg/L.Wherein, the highest FA concentration 1.7mg/L does not suppress NOB completely; Minimum FNA concentration 0.2mg/L is far longer than the full inhibition concentrations of NOB.Therefore, FNA is the key successfully realizing nitrosification in native system.Every SBR cycle of operation start and at the end of, FNA concentration is all greater than 2mg/L, clearly inhibits the growth of AOB.This is consistent with DO change in concentration trend, and show that AOB is suppressed completely, nitrification temporarily stops, and DO does not almost consume, therefore DO every SBR cycle of operation start and at the end of suddenly increase.
The utility model has following advantage and effect relative to prior art:
(1) nitrosation reaction and Anammox reaction startup, run in sludge concentration MLSS is not limited;
(2) sequence batch (A/O linked system effectively can carry out nitrosation reaction, and technical operation flow is simple, and anti-ammonia nitrogen loading impact capacity is strong;
(3) utilize the pH of fill phase in SBR operational process indirectly to control, maintain stable nitrosification by the direct control realization of FNA;
(4) microbial film in MBR/MBBR reaction tank or floating stuffing can have effectively catching anaerobic ammonia oxidizing bacteria and denitrifying bacteria, express delivery and stable realize Anammox reaction;
(5) adopt PLC control system, run easy, control accurately;
(6) the utility model successfully can process high ammonia-nitrogen wastewater, and in nitrosation reactor, nitrosification accumulation rate reaches more than 95%; Final outflow water reaches national up-to-date sewage drainage standard, and wherein, in water outlet, total nitrogen concentration is lower than 40mg/L, NH
4 +-N concentration is lower than 25mg/L.
Accompanying drawing explanation
Fig. 1 is the structural representation realizing waste water advanced nitrogen rejection facility based on sequence batch (A/O linked system of the present utility model, wherein: 1. equalizing tank; 2.SBR reaction tank oxygen-starved area; 3.SBR reaction tank aerobic zone; 4. ceramic filter; 5.MBR/MBBR reaction tank; 1.1. first liquid under meter; 1.2. the first intake pump; 1.3. the first agitator; 1.4. first heater; 2.1. the first pH meter; 2.2.ORP meter; 2.3. the second agitator; 2.4. overflow groove; 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. the first temperature sensor; 3.7. water decanter; 3.8. gas meter; 3.9. aerator; 3.10. reflux pump; 3.11. reflux line; 3.12. second liquid under meter; 4.1. the second temperature-adjusting heating device; 5.1. the second intake pump; 5.2. the 3rd liquid meter; 5.3. floating stuffing; 5.4. the second temperature sensor; 5.5. water suction pump; 5.6. water outlet; 5.7. filler grids screen; 5.8. microbial film.
Fig. 2 is the PLC on-line Control explanatory view realizing waste water advanced nitrogen rejection facility based on sequence batch (A/O linked system of the present utility model.
Fig. 3 is the PLC on-line Control schema realizing the nitrosation reaction of waste water advanced nitrogen rejection facility based on sequence batch (A/O linked system of the present utility model.
Fig. 4 is the PLC on-line Control schema realizing the Anammox reaction of waste water advanced nitrogen rejection facility based on sequence batch (A/O linked system of the present utility model.
PH and the DO changing trend diagram in sbr reactor pond aerobic zone one cycle when Fig. 5 is system stable operation in embodiment 2.
FNA and the FA changing trend diagram in sbr reactor pond aerobic zone one cycle when Fig. 6 is steady running in embodiment 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
As shown in Figure 1, a kind of wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system, is provided with equalizing tank 1, sbr reactor pond 2,3, ceramic filter 4 and MBR/MBBR reaction tank 5; Described sbr reactor pond 2,3 comprises oxygen-starved area, sbr reactor pond 2 and aerobic zone, sbr reactor pond 3;
Described equalizing tank 1 is communicated with oxygen-starved area, sbr reactor pond 2 with first liquid under meter 1.1 by the first intake pump 1.2 successively;
Described oxygen-starved area, sbr reactor pond 2 is communicated with aerobic zone, sbr reactor pond 3 by overflow groove 2.4;
Described aerobic zone 3, sbr reactor pond inner bottom part is provided with aeration tube 3.5; Described aeration tube 3.5 is connected with aerator by gas meter;
Be communicated with oxygen-starved area, sbr reactor pond 2 with reflux pump 3.10, second liquid under meter 3.12 successively by reflux line 3.11 bottom described aerobic zone, sbr reactor pond 3;
Described inside, aerobic zone 3, sbr reactor pond is provided with water decanter 3.7;
Described ceramic filter 4 is communicated with aerobic zone, sbr reactor pond 3 by water decanter 3.7;
Described MBR/MBBR reaction tank 5 inside is provided with microbial film 5.8, floating stuffing 5.3, and described microbial film 5.8 is connected with water suction pump 5.5;
Described MBR/MBBR reaction tank 5 top is provided with water outlet 5.6; Described water outlet front is provided with filler grids screen 5.7, prevents filler from losing with process current;
Described MBR/MBBR reaction tank 5 is communicated with ceramic filter 4 with the 3rd liquid meter 5.2 by the second intake pump 5.1;
Described equalizing tank 1 inside is provided with the first agitator 1.3 and first heater 1.4;
Described inside, oxygen-starved area 2, sbr reactor pond is provided with the second agitator 2.3, a PH meter 2.1 and ORP meter 2.2;
Described inside, aerobic zone 3, sbr reactor pond is provided with the 3rd agitator 3.1, the 2nd PH meter 3.2, DO meter 3.3, liquid level sensor 3.4 and the first temperature sensor 3.6;
Described oxygen-starved area, sbr reactor pond 2 and the volume ratio of aerobic zone, sbr reactor pond 3 are 1:(3 ~ 5);
Described ceramic filter 4 inside is provided with secondary heating mechanism 4.1;
Described MBR/MBBR reaction tank 5 inside is provided with the second temperature sensor 5.4;
As shown in Figure 2, described first liquid under meter 1.1, a PH meter 2.1, ORP meter the 2.2, the 2nd PH meter 3.2, DO meter 3.3, liquid level sensor 3.4, first temperature sensor 3.6, second liquid under meter 3.12, gas meter 3.8, second temperature sensor 5.2, the 3rd liquid meter 5.9 are connected with PLC respectively;
Described PLC with receive numerary signal and the computer exporting control signal is connected; Described PLC is connected with the first intake pump 1.2, first agitator 1.3, first heater 1.4, second agitator 2.3, the 3rd agitator 3.1, aerator 3.9, water decanter 3.7, reflux pump 3.10, secondary heating mechanism 4.1, second intake pump 5.7 and water suction pump 5.8 respectively.
Apply the above-mentioned method (Fig. 3, Fig. 4) realizing the wastewater treatment equipment process waste water of waste water advanced denitrogenation based on sequence batch (A/O linked system, comprise following concrete steps:
(1) nitrosation reaction is started:
1) be that seed sludge injects aerobic zone, sbr reactor pond 3 and oxygen-starved area 2 with nitrifying sludge; Open the first agitator 1.3 of equalizing tank 1, waste water is loaded in equalizing tank 1;
2) waste water in equalizing tank 1 pumps into oxygen-starved area, sbr reactor pond 2 by the first intake pump 1.2, opens the second agitator 2.3 of oxygen-starved area, sbr reactor pond 2 simultaneously, carries out denitrification;
3) when oxygen-starved area 2, sbr reactor pond current start overflow to aerobic zone 3, adopt SBR to run and start aerobic zone, sbr reactor pond 3, carry out short distance nitration effect:
1. water inlet-aeration (reaction) stage: take the mode of unlimited aeration-intermittent water inflow by oxygen-starved area 2, sbr reactor pond current by overflow groove 2.4 overflow to aerobic zone 3, the reflux pump 3.10 opened the 3rd agitator 3.1 and start between aerobic zone, sbr reactor pond 3 and oxygen-starved area 2; In this process, monitored the water inlet of oxygen-starved area 2 by the second pH meter 3.2 of aerobic zone, sbr reactor pond 3, make the pH of aerobic zone, sbr reactor pond 3 maintain 6.5 ~ 7.9; DO in aerobic zone, sbr reactor pond 3 maintains ﹥ 1 mg/L; Reflux ratio is 3, can finely tune according to practical situation;
2. follow-up aeration phase: reach when flooding quantity or higher than level set value, stop water inlet but continue aeration;
3. precipitate phase: follow-up aeration phase terminates rear stopping the 3rd agitator 3.1, and closing volume pump 3.10, precipitates;
4. bleeding stage: monitored by liquid level sensor 3.4 and use water decanter 3.7 to control draining, pretreated for short distance nitration waste water is drained into ceramic filter 4;
(2) Anammox reaction is started:
Get anaerobic ammonium oxidation sludge and inject MBR/MBBR reaction tank 5, open the second intake pump 5.1, by pretreated for the short distance nitration in ceramic filter 4 waste water (NH
4 +-N:NO
2--N=1 ~ 1.32) pump into MBR/SBBR reaction tank 5, open water suction pump 5.5; Microbial film 5.8 in MBR/MBBR reaction tank or floating stuffing 5.3 can effectively catching anaerobic ammonia oxidizing bacteria and denitrifying bacterias, carry out Anammox reaction and anti-nitration reaction simultaneously, denitrifying bacteria can consume the nitric nitrogen that part COD remaining in water inlet and anaerobic ammonia oxidizing bacteria generate, and consumes dissolved oxygen in anaerobic environment for Anammox and provide anaerobic environment; Filler grids screen 5.7 loses with process current for preventing filler; In the water outlet of the water outlet 5.6 of MBR/MBBR reaction tank, total nitrogen concentration is lower than 40mg/L, NH
4 +when-N concentration is lower than 25mg/L, show that Anammox reaction starts successfully;
(3) system stable operation:
Repeating step (1), (2), (3), hydraulic detention time progressively reduces to 1d from 2d;
Described waste water is high ammonia-nitrogen wastewater, and in described high ammonia-nitrogen wastewater, NH4+-N concentration is greater than 500mg/L, and BOD5/TN is less than 3 ~ 5;
Described high ammonia-nitrogen wastewater is preferably changing food waste Digestive system, percolate, sludge digestion supernatant liquor, food industrial wastewater, herding waste water, wastewater from chemical industry;
Step 3) in the temperature of aerobic zone, sbr reactor pond 3 be 30 ~ 40 DEG C, when temperature is lower than 30 DEG C, start the heating installation 1.4 of equalizing tank, when temperature is higher than 40 DEG C, stop the heating installation 1.4 of equalizing tank;
Step 3) in the temperature of aerobic zone, sbr reactor pond 3 be preferably 35 DEG C; When temperature is lower than 35 DEG C, start the heating installation 1.4 of equalizing tank, when temperature is higher than 35 DEG C, stop the heating installation 1.4 of equalizing tank;
Step 3) 1. described in unlimited aeration refer to that whole water inlet-aeration (reaction) stage all carries out aeration;
Step 3) 1. described in the mode of intermittent water inflow be that the pH of aerobic zone, sbr reactor pond maintains 6.5 ~ 7.9, when the pH of aerobic zone, sbr reactor pond is lower than 6.5 ~ 7.9, start the water inlet of oxygen-starved area, sbr reactor pond; When the pH of aerobic zone, sbr reactor pond is higher than 6.5 ~ 7.9, stop the water inlet of oxygen-starved area, sbr reactor pond;
Step 3) 1. described in the mode of the intermittent water inflow pH that is preferably aerobic zone, sbr reactor pond maintain 6.8 ~ 7.5; When the pH of aerobic zone, sbr reactor pond is lower than 6.8 ~ 7.5, start the water inlet of oxygen-starved area, sbr reactor pond; When the pH of aerobic zone, sbr reactor pond is higher than 6.8 ~ 7.5, stop the water inlet of oxygen-starved area, sbr reactor pond;
Step 3) 2. described in working time of follow-up aeration phase be 30min ~ 3h, concrete reflecting time is 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 working time of precipitate phase be 30 ~ 60min;
The NH of the pretreated waste water of short distance nitration described in step (2)
4 +-N:NO
2--N is 1 ~ 1.32;
The temperature of the MBR/SBBR reaction tank described in step (2) maintains 30 ~ 35 DEG C.
Embodiment 2
Adopt the sequence batch (A/O linked system wastewater treatment equipment and the disposal methods waste water that realize waste water short distance nitration described in the utility model, wherein equalizing tank is of a size of B × H × L=470 × 500 × 440cm, and cubic capacity is 103400L.Oxygen-starved area, sbr reactor pond is of a size of 470 × 500 × 440cm, useful volume 100000L; Aerobic zone is of a size of 470 × 500 × 1540cm, and useful volume is 350000L.
Get the percolate of Xiaping Solid Waste Dumping Ground, Shenzhen City, its pH is 8.01 ~ 8.65, NH
4 +-N concentration is up to 1500 ~ 3000mg/L, BOD
5/ TN is less than 3 ~ 5, is typical high-concentration ammonia-nitrogen low ratio of carbon to ammonium waste water.
(1) nitrosation reaction is started:
1) with the nitrifying sludge of Xia Ping percolate treatment plant of Shenzhen for seed sludge injects aerobic zone, sbr reactor pond and oxygen-starved area; Open first agitator (300 turns/h) of equalizing tank, waste water is loaded in equalizing tank;
2) waste water in equalizing tank pumps into oxygen-starved area, sbr reactor pond by the first intake pump, opens second agitator (300 turns/h) of oxygen-starved area, sbr reactor pond simultaneously, carries out denitrification;
3) when oxygen-starved area, sbr reactor pond current start overflow to aerobic zone, adopt SBR to run and start aerobic zone, sbr reactor pond, carry out short distance nitration effect, wherein the temperature of aerobic zone, sbr reactor pond is 30 ~ 40 DEG C, when temperature is lower than 30 DEG C, start the heating installation of equalizing tank, when temperature is higher than 40 DEG C, stop the heating installation of equalizing tank:
1. water inlet-aeration (reaction) stage: take the mode of unlimited aeration-intermittent water inflow by the current overflow of oxygen-starved area, sbr reactor pond to aerobic zone, the reflux pump opened the 3rd agitator (300 turns/h) and start between aerobic zone, sbr reactor pond and oxygen-starved area; In this process, by the water inlet of the pH meter monitoring oxygen-starved area of aerobic zone, sbr reactor pond, the pH of aerobic zone, sbr reactor pond is made to maintain 6.5 ~ 7.9; When the pH of aerobic zone, sbr reactor pond is lower than 6.5 ~ 7.9, start the water inlet of oxygen-starved area, sbr reactor pond; When the pH of aerobic zone, sbr reactor pond is higher than 6.5 ~ 7.9, stop the water inlet of oxygen-starved area, sbr reactor pond; DO in aerobic zone, sbr reactor pond maintains ﹥ 1mg/L; Reflux ratio is 3;
2. follow-up aeration phase: when flooding quantity reaches or higher than level set value, stop water inlet but continue aeration, the working time of follow-up aeration phase is 1h;
3. precipitate phase: follow-up aeration phase terminates rear stopping the 3rd agitator, and closing volume pump, precipitates, the working time of precipitate phase is 30min;
4. bleeding stage: use water decanter to control draining by level sensor monitors, pretreated for short distance nitration waste water is drained into ceramic filter;
(2) Anammox reaction is started:
Get anaerobic ammonium oxidation sludge and inject MBR/MBBR reaction tank, open the second intake pump, by pretreated for the short distance nitration in ceramic filter waste water (NH
4 +-N:NO
2--N=1 ~ 1.32) pump into MBR/SBBR reaction tank, open water suction pump, the temperature of described MBR/SBBR reaction tank maintains 30 ~ 35 DEG C; In the water outlet of MBR/MBBR reaction tank, total nitrogen concentration is lower than 40mg/L, NH
4 +when-N concentration is lower than 25mg/L, show that Anammox reaction starts successfully;
(3) system stable operation:
Repeating step (1), (2), (3), hydraulic detention time progressively reduces to 1d from 2d.
PH and the DO changing trend diagram in sbr reactor pond aerobic zone one cycle when Fig. 5 is the present embodiment system stable operation, FNA and the FA changing trend diagram in sbr reactor pond aerobic zone one cycle when Fig. 6 is the present embodiment system stable operation.As can be seen from the figure, in a cycle of operation of aerobic zone, sbr reactor pond, the concentration of FNA and FA is respectively 0.2 ~ 2.8mg/L and 0.02 ~ 1.7mg/L.Wherein, the highest FA concentration 1.7mg/L does not suppress NOB completely; Minimum FNA concentration 0.2mg/L is far longer than the full inhibition concentrations of NOB.Therefore, FNA is the key successfully realizing nitrosification in native system.Every SBR cycle of operation start and at the end of, FNA concentration is all greater than 2mg/L, clearly inhibits the growth of AOB.This is consistent with DO change in concentration trend, and show that AOB is suppressed completely, nitrification temporarily stops, and DO does not almost consume, therefore DO every SBR cycle of operation start and at the end of suddenly increase.
Experimental result shows: system cloud gray model is after 1 month, and operating performance is stablized, aerobic zone, sbr reactor pond water inlet NH
4 +-N load ALR is up to 3kg NH
4 +-N/m
3d, NO
2--N accumulation rate is up to more than 95%; System final outflow water reaches national up-to-date sewage drainage standard, wherein, in water outlet total nitrogen concentration lower than 40mg/L, NH4+-N concentration lower than 25mg/L.This aerobic zone, system sbr reactor pond concrete Inlet and outlet water water quality is as shown in table 1:
The sequence batch (A/O linked system wastewater treatment equipment Inlet and outlet water water quality parameter that table 1 realizes waste water short distance nitration compares
Above-described embodiment is the utility model preferably embodiment; but embodiment of the present utility model is not restricted to the described embodiments; change, the modification done under other any does not deviate from spirit of the present utility model and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection domain of the present utility model.
Claims (10)
1. realize a wastewater treatment equipment for waste water advanced denitrogenation based on sequence batch (A/O linked system, it is characterized in that:
Be provided with equalizing tank, sbr reactor pond, ceramic filter and MBR/MBBR reaction tank; Described sbr reactor pond comprises oxygen-starved area, sbr reactor pond and aerobic zone, sbr reactor pond;
Described equalizing tank is communicated with oxygen-starved area, sbr reactor pond with first liquid under meter by the first intake pump successively;
Described oxygen-starved area, sbr reactor pond is communicated with aerobic zone, sbr reactor pond by overflow groove;
Described aerobic zone, sbr reactor pond inner bottom part is provided with aeration tube; Described aeration tube is connected with aerator by gas meter;
Be communicated with oxygen-starved area, sbr reactor pond with reflux pump, second liquid under meter successively by reflux line bottom described aerobic zone, sbr reactor pond;
Described inside, aerobic zone, sbr reactor pond is provided with water decanter;
Described ceramic filter is communicated with aerobic zone, sbr reactor pond by water decanter;
Described MBR/MBBR reaction tank inside is provided with microbial film, floating stuffing, and described microbial film is connected with water suction pump;
Described MBR/MBBR reaction tank top is provided with water outlet; Described water outlet front is provided with filler grids screen;
Described MBR/MBBR reaction tank is communicated with ceramic filter with the 3rd liquid meter by the second intake pump.
2. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
Described equalizing tank inside is provided with the first agitator and first heater.
3. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
Described inside, oxygen-starved area, sbr reactor pond is provided with the second agitator, a PH meter and ORP meter.
4. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
Described inside, aerobic zone, sbr reactor pond is provided with the 3rd agitator, the 2nd PH meter, DO meter, liquid level sensor and the first temperature sensor.
5. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
Described ceramic filter inside is provided with secondary heating mechanism.
6. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
Described MBR/MBBR reaction tank inside is provided with the second temperature sensor.
7. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 1, is characterized in that:
The volume ratio of described oxygen-starved area, sbr reactor pond and aerobic zone, sbr reactor pond is 1:(3 ~ 5).
8. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to any one of claim 2 ~ 6, is characterized in that:
Described first liquid under meter, a PH meter, ORP meter, the 2nd PH meter, DO meter, liquid level sensor, the first temperature sensor, second liquid under meter, gas meter, the second temperature sensor, the 3rd liquid meter are connected with PLC respectively.
9. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 8, is characterized in that:
Described PLC with receive numerary signal and the computer exporting control signal is connected.
10. the wastewater treatment equipment realizing waste water advanced denitrogenation based on sequence batch (A/O linked system according to claim 8, is characterized in that:
Described PLC is connected with the first intake pump, the first agitator, first heater, the second agitator, the 3rd agitator, aerator, water decanter, reflux pump, secondary heating mechanism, the second intake pump and water suction pump respectively.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108841A (en) * | 2014-08-11 | 2014-10-22 | 吕慧 | Wastewater treatment device and wastewater treatment method for realizing deep wastewater denitrification based on sequencing batch type A/O (Anoxic/Oxic) linkage system |
| CN108314257A (en) * | 2018-01-30 | 2018-07-24 | 灵川县億旺养殖专业合作社 | The treatment process of Pig raising wastewater |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | A kind of low carbon nitrogen ratio food waste fermentation wastewater AOA biofilm treatment system and method |
-
2014
- 2014-08-11 CN CN201420451028.2U patent/CN204151191U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104108841A (en) * | 2014-08-11 | 2014-10-22 | 吕慧 | Wastewater treatment device and wastewater treatment method for realizing deep wastewater denitrification based on sequencing batch type A/O (Anoxic/Oxic) linkage system |
| CN104108841B (en) * | 2014-08-11 | 2015-12-02 | 吕慧 | A kind of wastewater treatment equipment and method realizing waste water advanced denitrogenation based on sequence batch (A/O linked system |
| CN108314257A (en) * | 2018-01-30 | 2018-07-24 | 灵川县億旺养殖专业合作社 | The treatment process of Pig raising wastewater |
| CN108314257B (en) * | 2018-01-30 | 2021-08-03 | 灵川鹏发养殖有限公司 | Treatment process of pig raising wastewater |
| CN111777292A (en) * | 2019-12-30 | 2020-10-16 | 重庆大学 | A kind of low carbon nitrogen ratio food waste fermentation wastewater AOA biofilm treatment system and method |
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