ADM1模型对生物强化厌氧产甲烷体系的模拟

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Abstract

Based on the promotion of anaerobic digestion by bioaugmentation under high ammonia concentration, modification and verification of Anaerobic Digestion Model NO.1 (ADM1) was studied to simulate the process. The experimental data showed that methane production was increased with different bioaugmentation approaches. Considering the result of sensitivity analysis and parameter definition, three hypotheses were established and related parameters (Monod half saturation constant for acetate:ks_ac; Monod maximum uptake rate of acetate:kmac and ammonia nitrogen inhibition constant:KI_NH₃,Xac) were chosen to be modified. The simulation results showed that three modified models could accurately describe the bioaugmentation process. Especially, ADM1 with modifying kmac (ADM1_km_ac) performed the best representation on describing methane production and volatile fatty acids, with the highest goodness-of-fit values (R²>0.87), indicating that the modification of km_ac was worthwhile for bioaugmentation process. Verification of modified models further demonstrated that ADM1_km_ac could be regarded as a suitable model to simulate, analyze and predict the process of bioaugmentation-anaerobic digestion system.

Key words： ADM1 bioaugmentation anaerobic digestion methane monod maximum uptake rate

Received: 31 July 2019

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X705

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	SUN Hang-yu
	YANG Zi-yi
	LI Xiao-nan
	LIU Guang-qing
	WANG Wen

Cite this article:

SUN Hang-yu,YANG Zi-yi,LI Xiao-nan等. Simulation of anaerobic digestion based on bioaugmentation by ADM1[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(3): 1049-1058.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I3/1049

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