CN103588293A - Control method of anaerobic ammoxidation reaction - Google Patents
Control method of anaerobic ammoxidation reaction Download PDFInfo
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- CN103588293A CN103588293A CN201310510800.3A CN201310510800A CN103588293A CN 103588293 A CN103588293 A CN 103588293A CN 201310510800 A CN201310510800 A CN 201310510800A CN 103588293 A CN103588293 A CN 103588293A
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Abstract
The invention discloses a control method of an anaerobic ammoxidation reaction, and relates to the technical field of the biological treatment of sewage. The anaerobic ammoxidation treatment effect is realized by controlling the material temperature, the inorganic carbon source concentration and the pH value of a reactor with an upflow anaerobic sludge bed as reaction carrier, wherein the temperature of the reaction material in the reactor is controlled in a range of 30-40DEG C; the adopted inorganic carbon source is NaHCO3, and the concentration of NaHCO3 in the reaction material is controlled in a range of 0.75-0.1g/L; and the pH value of the reaction material in the reactor is in a range of 7-7.5. A system disclosed in the invention is composed of a temperature control system, an automatic inorganic carbon source concentration control system and an automatic pH value control system; the system can display the temperature, pH value the like of an anaerobic ammoxidation reactor in real time, and is in favor of the effective control of the running management; and the system can automatically control the temperature, the inorganic carbon concentration and the pH value in the anaerobic ammoxidation reactor according to the running condition to realize the stable running of the anaerobic ammoxidation reaction.
Description
Technical field
The present invention relates to dirty water living creature processing technique field, be specifically related to a kind of control method of Anammox reaction.
Background technology
In recent years along with scientific and technical fast development, improving constantly of living standards of the people, environmental pollution is day by day serious, obtained gradually attention in various degree, the particularly aggravation of nitrate pollution, not only living standards of the people are exerted a certain influence, more expanding economy is also had to certain restriction.Trade effluent and sanitary sewage etc. mostly contain a large amount of organonitrogens and inorganic nitrogen, some trade effluents particularly, if coal pressure gasification waste water, nitrogenous fertilizer waste water, coking chemical waste water, piggery wastewater etc. are without processing thoroughly or not can be found everywhere through processing the phenomenon of directly discharge, environment is caused to serious harm.According to China's environmental quality communique report recent years, water surrounding has been subject to unprecedented pollution, total nitrogen exceeds standard becomes the major reason that causes deteriorating water quality, and ammonia-state nitrogen has become one of principal pollutant matter of China's municipal lake, each Big Lakes and China's seven large water systems etc.
Because the organic content of current China municipal sewage plant's influent quality is generally lower, carbon source is not enough, cannot guarantee good denitrification denitrogenation efficiency.Nineteen ninety, it is anaerobic ammonia oxidation process that a kind of novel denitrification process is developed in the Dutch Delft Kluyver of technology university Biotechnology Experiment chamber; Anammox reaction is the reaction of whole process autotrophic type, therefore compare with traditional denitrification process, Anammox has outstanding advantages and has: 1, zmount of oxygen consumption is few, because Anammox reaction only need be converted into nitrite by ammonia, and without being converted into nitrate, Anammox reaction oxygen-consumption is only for the 35%(of conventional denitrification reaction does not consider that cell synthesizes oxygen consumed amount), so can greatly reduce the supply of oxygen; 2,, because the anaerobic ammonia oxidizing bacteria doubling time is longer, Anammox reaction sludge output is less, thereby has greatly saved sludge treatment disposal costs; 3, can reduce secondary pollution, because Anammox reaction directly utilizes ammonia as electron donor, and without additional organism, can save reagent cost, also can avoid the secondary pollution causing due to additional organism simultaneously.But Anammox does not also have practical engineering application at present at home, the bottleneck of application is that anaerobic ammonium oxidation process is very complicated, and influence factor is extremely extensive, and operational management skill requires high; Improving Anammox control method is in actual applications current urgent problem.
Summary of the invention
The problems referred to above that exist in actual applications for existing Anammox, the invention provides a kind of control method of Anammox reaction, by to the temperature of Anammox, inorganic carbon source concentration and pH value Comprehensive Control, to the operation of Anammox stable reaction, improve the ammonia transformation efficiency in sewage disposal.
The control method of a kind of Anammox reaction of the present invention is:
The upflow anaerobic sludge blanket process (UASB) of take is reaction carriers, by controlling temperature, inorganic carbon source concentration and the pH value of material in reactor, reaches Anammox treatment effect; The temperature of wherein controlling reaction mass in reactor is 30 ~ 40 ℃; The inorganic carbon source adopting is NaHCO
3, NaHCO in reaction mass
3concentration span of control be 0.75 ~ 0.1g/L; In reactor, the scope of the pH value of reaction mass is between 7 ~ 7.5.
In aforesaid method, the hydronic device of water-bath comprises recirculated water bath, thermometer, programming temperature controller, well heater and water circulating pump, by thermometer, surveyed the temperature of circulation heating agent, input to programming temperature controller, with predefined temperature comparison, temperature controller regulates heating medium for heating temperature by heater, heating agent enters recirculated water bath by recycle pump, recirculated water bath is enclosed within outside reactor, by thermometer, to heat medium temperature Real-Time Monitoring, realizes temperature automatically controlled.
In aforesaid method, the device that inorganic carbon source concentration is controlled comprises NaHCO
3solution hold tank, NaHCO
3solution measures pump and inorganic carbon source on-line monitoring instrument, the inorganic carbon source NaHCO of material in inorganic carbon source on-line monitoring instrument monitoring reactor
3concentration, with the NaHCO arranging
3, output signal is controlled NaHCO to concentration ratio
3solution measures pump opens and closes, and changes and enters the inorganic carbon source concentration in reactor.
In aforesaid method, the device that pH value is controlled comprises pH meter, online pH instrument, NaOH solution hold tank and NaOH solution measures pump, pH in pH meter monitoring reactor, result reaches pH auto-controller, compare with the pH value setting in advance, output signal is controlled NaOH solution measures pump and is opened and closed, and regulates the NaOH concentration that enters material in reactor.
The feature of native system is that system is comprised of temperature controlling system, inorganic carbon source concentration automatic control Controlling System and three parts of pH value automatic control system; System can show the information such as the temperature in anaerobic ammonia oxidation reactor, pH value in real time, be conducive to effective control of operational management; System can be controlled the temperature in anaerobic ammonia oxidation reactor, inorganic carbon source concentration and pH value automatically according to operation condition, realizes the steady running of Anammox reaction.
Accompanying drawing explanation
Fig. 1 is activated sludge process Anammox reactive system structural representation of the present invention;
Fig. 2 is water-bath circulating system structure schematic diagram of the present invention;
Fig. 3 is inorganic carbon source concentration of the present invention, pH value control system structural representation;
In figure, 1, former tank, 2, circulating water channel, 3, triphase separator, 4, water circulating pump, 5, former water volume pump, 6, sludge circulation pump, 7, water bath, 8, main reaction region, 9, reactor mud mouth, 10, water-in, 11, water outlet, 12, water seal arrangement, 13, programming temperature controller, 14, thermometer, 15, well heater, 16, NaHCO
3solution hold tank, 17, NaHCO
3solution measures pump, 18, inorganic carbon source on-line monitoring instrument, 19, pH meter, 20, online pH instrument, 21, NaOH solution hold tank, 22, NaOH solution measures pump;
Fig. 4 is the time m-clearance graphic representation after the method in the embodiment of the present invention is implemented, and wherein ■ is ammonia-state nitrogen, ● be nitrite nitrogen.
Embodiment
The NaHCO adopting in the embodiment of the present invention
3the concentration of solution is 10g/L.
The concentration of the NaOH solution adopting in the embodiment of the present invention is 1mol/L.
The programming temperature controller adopting in the embodiment of the present invention is FCD-13A-R/M programmable thermostat.
The inorganic carbon source on-line monitoring instrument adopting in the embodiment of the present invention is TOC conductivity sensor.
The online pH instrument adopting in the embodiment of the present invention is the online numerical analysis controller of HANNA Hana.
Embodiment of the present invention Central Plains water ammonia nitrogen concentration is 150mg/L, and former water volume pump flow is 0.8L/h, recycle ratio 300%.
Embodiment 1
Anammox reactive system as shown in Figure 1,2 and 3, comprises reactor, sludge circulation pump, circulating water channel, water circulating pump, former water volume pump and former tank;
Adopt Wastewater Treated by Activated Sludge Process mud, water is passed in the mud of reactor, carry out Anammox reaction in reactor, after the reaction of discharging in reactor, sludge circulation enters reactor, and the cleaning water after processing and gas are discharged through triphase separator; Control the temperature of material in reactor, the control of inorganic carbon source concentration and pH value; The temperature of wherein controlling reaction mass in reactor is 30 ~ 40 ℃; The inorganic carbon source adopting is NaHCO
3, NaHCO in reaction mass
3concentration span of control be 0.75 ~ 0.1g/L; In reactor, the scope of the pH value of reaction mass is between 7 ~ 7.5;
The hydronic device of water-bath comprises recirculated water bath, thermometer, programming temperature controller, well heater and water circulating pump, by thermometer, surveyed the temperature of circulation heating agent, input to programming temperature controller, with predefined temperature comparison, temperature controller regulates heating medium for heating temperature by heater, and heating agent enters recirculated water bath by recycle pump, and recirculated water bath is enclosed within outside reactor, by thermometer, to heat medium temperature Real-Time Monitoring, realize temperature automatically controlled;
The device that inorganic carbon source concentration is controlled comprises NaHCO
3solution hold tank, NaHCO
3solution measures pump and inorganic carbon source on-line monitoring instrument, the inorganic carbon source NaHCO of material in inorganic carbon source on-line monitoring instrument monitoring reactor
3concentration, with the NaHCO arranging
3, output signal is controlled NaHCO to concentration ratio
3solution measures pump opens and closes, and changes and enters the inorganic carbon source concentration in reactor;
The device that pH value is controlled comprises pH meter, online pH instrument, NaOH solution hold tank and NaOH solution measures pump, pH in pH meter monitoring reactor, result reaches pH auto-controller, compare with the pH value setting in advance, output signal is controlled NaOH solution measures pump and is opened and closed, and regulates the NaOH concentration that enters material in reactor;
After said apparatus and method are processed, time m-clearance graphic representation as shown in Figure 4.
Claims (4)
1. a control method for Anammox reaction, is characterized in that: take upflow anaerobic sludge blanket process as reaction carriers, by controlling temperature, inorganic carbon source concentration and the pH value of material in reactor, reach Anammox treatment effect; The temperature of wherein controlling reaction mass in reactor is 30 ~ 40 ℃; The inorganic carbon source adopting is NaHCO
3, NaHCO in reaction mass
3concentration span of control be 0.75 ~ 0.1g/L; In reactor, the scope of the pH value of reaction mass is between 7 ~ 7.5.
2. the control method that a kind of Anammox according to claim 1 reacts, it is characterized in that the described hydronic device of water-bath comprises recirculated water bath, thermometer, programming temperature controller, well heater and water circulating pump, by thermometer, surveyed the temperature of circulation heating agent, input to programming temperature controller, with predefined temperature comparison, temperature controller regulates heating medium for heating temperature by heater, heating agent enters recirculated water bath by recycle pump, recirculated water bath is enclosed within outside reactor, by thermometer, to heat medium temperature Real-Time Monitoring, realize temperature automatically controlled.
3. the control method of a kind of Anammox reaction according to claim 1, is characterized in that the device that described inorganic carbon source concentration is controlled comprises NaHCO
3solution hold tank, NaHCO
3solution measures pump and inorganic carbon source on-line monitoring instrument, the inorganic carbon source NaHCO of material in inorganic carbon source on-line monitoring instrument monitoring reactor
3concentration, with the NaHCO arranging
3, output signal is controlled NaHCO to concentration ratio
3solution measures pump opens and closes, and changes and enters the inorganic carbon source concentration in reactor.
4. the control method that a kind of Anammox according to claim 1 reacts, it is characterized in that the device that described pH value is controlled comprises pH meter, online pH instrument, NaOH solution hold tank and NaOH solution measures pump, pH in pH meter monitoring reactor, result reaches pH auto-controller, compare with the pH value setting in advance, output signal is controlled NaOH solution measures pump and is opened and closed, and regulates the NaOH concentration that enters material in reactor.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105174448A (en) * | 2015-10-13 | 2015-12-23 | 沈阳建筑大学 | Anaerobic ammonia oxidation and denitrification coupling device and controlled operation method thereof |
| CN106277462A (en) * | 2016-09-09 | 2017-01-04 | 沈阳建筑大学 | A kind of milk product waste crystallizing-dephosphorizing control method |
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Cited By (2)
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|---|---|---|---|---|
| CN105174448A (en) * | 2015-10-13 | 2015-12-23 | 沈阳建筑大学 | Anaerobic ammonia oxidation and denitrification coupling device and controlled operation method thereof |
| CN106277462A (en) * | 2016-09-09 | 2017-01-04 | 沈阳建筑大学 | A kind of milk product waste crystallizing-dephosphorizing control method |
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