Abstract
The variation of physical properties of carrier and accumulation of salts in the thermophilic oxic process (TOP) reactor during long-term treatment of swine waste and their influence on decomposition rate of organic waste were examined. During long-term operation treatment test, the Dso of carrier became higher when inhibition of treatment was observed after continuous treatment for 100 days. Since the decomposition rate of organic waste could not be improved completely by destruction of massiveness of carrier, influence of salts accumulated in the reactor was considered not to be negligible. Massiveness of carrier and accumulation of salts during long-term operation of TOP resulted in also low ATP concentration in the reactor, revealing significance of these two factors on reducing microbial activity in the TOP reactor.
