抄録
The preparation of acclimated marine denitrifying sludge (AMDS) with high denitirifying activity from activated sludge obtained from night soil treatment plant employing a sea water dilution system was successful within only one month of acclimatizing period. The optimum pH and temperature for denitrification by the AMDS were 6-8 and 30°C, respectively. AMDS was successfully immobilized by PVA-freezing method. Continuos denitrification experiments of NO3-N polluted synthetic sea water using column type bioreactor packed with these immobilized AMDS were carried out. Maximum allowable NO3-N loading rate to obtain 90% of NO3-N removal was determined experimentally to be 6.0 mg-NO3-N/g-pellet/d.
