What is the minimum capacity of sewage (%age wise) required to run a MBBR 24x7?

Hello,

For a 1800 capacity sports stadium,  a 200 KLD STP, based on MBBR technology has been recommended. However, since that many number of spectators will be far between and only 3-5 skeleton staff shall be posted throughout the year, the continuous supply of raw sewage is not possible. Can a MBBR plant, designed for 200 KLD, perform with 15-20 KLD of sewage? If not, please advise any other technology.

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