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- W18314456 abstract "The effect of the ratio of height to diameter (H/D) on the process of simultaneous nitrogen removal from swine wastewater and hydrogen sulfide removal from biogas was investigated, using the bubble column reactors with packing material. The performance of the reactor with H/D of 8 : 1, 3 :1 and 2 : 1 was compared. Under temperature of 30-32 degrees C, gas retention time of 6.70 min, hydraulic retention time of 3.35 d, hydrogen sulfide concentration of 1 414-1 838 mg x m(-3) in biogas, and NO(x)(-) -N concentration of 114-243 mg x L(-1) in influent. The reactor with H/D of 2 : 1 achieved a stable and good treatment result, with the average removal rates of 96.7% for hydrogen sulfide, and 88.7% for N(x)(-) -N. While the reactors with H/D of 3 : 1 and 8 : 1 obtained unstable and inferior results, with the average removal rates of 68.0%, 80.4% for hydrogen sulfide respectively, and 89.7%, 90.2% for NO(x)(-) -N respectively. The reason could be attributed to the following facts. The reactor with H/D of 2:1 has a slower optimum gas velocity (3.12 x 10(-2) m x s(-1))- than the reactor with H/D of 3 : 1 and 8 : 1 (3.62 x 10(-2) m x s(-1) and 6.64 x 10(-2) m x s(-1) respectively), and has a higher gas-liquid mass transfer coefficient (1.79 x 10(-5) s(-1)) than the other two reactors (1.64 x 10(-5) s(-1) and 1.55 x 10(-5) s(-1) respectively). Results of the performance and the hydrodynamics parameters of the reactors all indicated that the reactor with H/D of 2 : 1 was more suitable for the process of simultaneous nitrogen and hydrogen sulfide removal." @default.
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- W18314456 date "2010-09-01" @default.
- W18314456 modified "2023-09-28" @default.
- W18314456 title "Effect of the ratio of height to diameter on the performance of the simultaneous reactor for nitrogen removal from swine wastewater and sulfide removal from biogas" @default.
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