Treatment of Slaughter House Wastewater in a Sequencing Batch Reactor: Performance Evaluation and Biodegradation Kinetics

Table 3

Evaluation of biokinetic coefficients for carbon oxidation from slaughterhouse wastewater in SBR.

Initial SCOD; (mg/L)	(4+4) hr react period combination	(5+3) hr react period combination	(3+5) hr react period combination	Standard values for kinetic constants [44]
1000 ± 50	(i) Substrate utilization-; 𝑦=70.32𝑥+0.215; (ii) Microbial growth-; 𝑦=0.522𝑥−0.051	(i) Substrate utilization-; 𝑦=68.22𝑥+0.187; (ii) Microbial growth-; 𝑦=0.622𝑥−0.057	(i) Substrate utilization-; 𝑦=42.65𝑥+0.285; (ii) Microbial growth-; 𝑦=0.485𝑥−0.047	𝐾 (day^−1) = (2–10); 𝐾𝑠 (mg/L SCOD) = (15–70); 𝑌 (mg VSS/mg SCOD) = (0.4–0.8); 𝑘𝑑 (day^−1) = (0.025–0.075)
	Kinetic constants: 𝑘 (day^−1) = 4.65; 𝐾𝑠 (mg/L SCOD) = 327.06; 𝑌 (mg VSS/mg SCOD) = 0.522; 𝑘𝑑 (day^−1) = 0.051	Kinetic constants: 𝑘 (day^−1) = 5.34; 𝐾𝑠 (mg/L SCOD) = 364.81; 𝑌 (mg VSS/mg SCOD) = 0.622; 𝑘𝑑 (day^−1) = 0.057	Kinetic constants: 𝑘 (day^−1) = 3.50; 𝐾𝑠 (mg/L SCOD) = 149.64; 𝑌 (mg VSS/mg SCOD) = 0.485; 𝑘𝑑 (day^−1) = 0.047