Bezkrovna M. Purification of sewage from mineral nitrogen in flow-type bioreactors

Dissertation is devoted to experimental and theoretical research of a simultaneous nitrification-denitrification (SND) (including the process involving ANAMMOX bacteria) during purification of sewage from mineral nitrogen (MN) compounds in a flow-type bioreactor. It is found out that active mule with big-size floccules (up to critical) makes the process of purification from MN more effective; physical explanation of the fact is provided which means that increase in purification efficiency (in result of increase in floccules size) is caused by intensification of the process of microbiological denitirification. A method of biological purification of sewage from ammonia (involving ANAMMOX-bacteria) is worked out and patented. A numerical model describing hydrodynamic processes in aeration-clarification unit is created. Data of SND research can be used for raising the efficiency of purification of sewage from mineral nitrogen in functioning flow-type bioreactors.The results of the work were used at industrial sewage disposal plants for purification from ammonia nitrogen.