| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase effective denitrifying rate relating to a denitrification method by living organisms of ammoniacal nitrogen-containing raw water fed into a denitrification tank in the presence of nitrite nitrogen comprising the action of microorganisms with the ammoniacal nitrogen held in the denitrification tank acting as an electron donor and nitrite nitrogen as an electron acceptor. SOLUTION: Raw water containing ammoniacal nitrogen and nitrite nitrogen are fed to a first denitrification tank 1. After the ammoniacal nitrogen is denitrified by the action of independent, nutritive, denitrifying microorganisms in the presence of nitrite nitrogen, it is transferred to a second denitrification tank 2 and the denitrification treatment is performed by the action of slave, nutritive, denitrifying microorganisms to remove NO3 -N as N2 .</p> |
