02927nam a2200361Ia 4500003001000000005001700010040000900027090001200036245012000048490014100168520166000309650001101969650002701980650002202007650002002029650001102049650001802060650001302078650001402091650001502105650002002120650002202140650001402162700001502176700001602191700001402207700001302221856015602234942001402390008004102404999001702445952010302462MX-MdCICY20260521091533.0  cCICY  aB-1667510aUsing Oxidation-Reduction Potential (ORP)and pH Value for Process Control of Shortcut Nitrification-Denitrification0 vJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering, 38(12), p.2933-2942, 20033 aA new low cost technology for simultaneous carbon-nitrogen removal from soybean wastewater has been developed in this study. The technology is performed through shortcut nitrification-denitrification. The process operated under real-time control of aeration and mixing time. The shortcut nitrification-denitrification in sequencing batch reactor (SBR)was achieved efficiently and steadily by controlling temperature (28 ± 0.5°C)and using real-time control strategies. This enabled the prevention of nitrite oxidation, leading to lower operational costs. The feasibility of oxidation-reduction potential (ORP)and pH value as control parameter for shortcut nitrification-denitrification process was also investigated. Results showed that the average removal efficiency of ammonium was more than 95 percent, and nitrosation rate (NO2 -N/NOx --N)was reached to 96 percent. At the same time, the variation of oxidation-reduction potential (ORP)and pH value was well related to organic matter degradation and ammonium oxidation in SBR. So that judgment on the ending of nitrification and denitrification can be based on the inflection point on the varied curve of ORP and pHthroughout each SBR processing cycle, and thus reducing aeration and mixing time for saving energy source. The method saves organic energy up to 40 percent of chemical oxygen demand (COD)in denitrification process, which should reduce the need for an extra external source of organic carbon. Shorter hydraulic retention time should allow the volume of the reactors to diminish, and thus diminish investment costs. Lower oxygen demand of about 25 percent gives lower exploitation costs.14aCARBON14aCHEMICAL OXYGEN DEMAND14aCHEMICAL REACTORS14aDENITRIFICATION14aMIXING14aNITRIFICATION14aNITROGEN14aOXIDATION14aPH EFFECTS14aPROCESS CONTROL14aREAL TIME SYSTEMS14aREDUCTION12aGao, D.-W.12aPeng, Y.-Z.12aLiang, H.12aWang, P.40uhttps://drive.google.com/file/d/144SLuo6H15ztRuHYiGPHSrLIHfW1ylEY/view?usp=drivesdkzPara ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx  2LoccREF1250602s9999    xx |||||s2   |||| ||und|d  c26784d26784  00102Loc40708F1aCICYbCICYcREd2025-06-25l0oB-16675r2025-06-25 16:01:56w2025-06-25yREF1