The Demanding Features Of Alkalinity In Anaerobic Sequencing Batch Reactor

Anaerobic digestion is cost-effective as a way in wastewater treatment but has a reputation for instability. The relationship between the populations of bacteria forming the food chain in anaerobic digestion may become unbalanced if operational conditions vary, leading to accumulation of volatile fatty acids (VFA) and a drop in pH. Thus control items such as alkalinity and pH are important.ASBR was intermittent in the influent and effluent style, F/Mn the composition and amount of substrate , the composition and amount of microbe and the degradation velocity of substrate varied with react time, so the demanding for alkalinity also varied. So alkalinity was regarded as a factor in connections with system's stabilization and need enough recognition. The aim of this paper was to study the various profile law of pH, VFA, BA and the demanding traits of alkalinity which could offer theoretic laws for ASBR in reducing alkalinity operations.First, the ASBR that has been halted for 40 days was start-up, and it was...