IT Dansk Spildevands Teknik has developed expert knowledge in refurbishing and optimising the operation of old wastewater treatment plants. By using computer technology for the operation and monitoring of DST's plants we have succeeded in reducing supervision and maintenance by up to 50% within the last 5 years. Our basic philosophy is, however, that technology for operation and monitoring should only be used if:   it provides a tool for reducing the operator's workload   it contains safety features against operating mistakes at the plant   it is simple and easy to use   it has a high log capacity for measurement data   it works safely at extreme ambient temperatures [Optimized for IE 1024x768]