RECENT INNOVATIONS IN INSTRUMENTATION FOR SEWAGE TREATMENT PLANT MONITORING AND CONTROL

ABSTRACT The strict standards of environmental control about to be enforced within the European Community have highlighted a need for more sophisticated monitoring and control of many parameters. Four recent innovations are described that may be used on sewage treatment plants. They are: 1) An on-line titrator used in the control of phosphate precipitation. 2) A respirometer to monitor the rate of oxygen uptake in a biomass. 3) A rapid chemical oxygen demand monitor. 4) A multifunctional unit, microprocessor controlled for various applications.