A Combined Water Management Approach Based on River Water Quality Standards

摘要: The objective of the research project described was to develop a combined water management approach for catchment area, including sewage system, wastewater treatment plant (WWTP), and receiving water. designed provide both "good quality" - as defined in European Water Framework Directive cost savings. investigations were carried out Odenthal, small municipality (12,500 p.e.) river Dhunn western part Germany. Emphasis placed on investigation impact pollution resulting from discharges at stormwater overflow tanks (SOTs), sewer overflows (CSOs) WWTP. These structures are interface between urban system bodies. quality standards applied deduced an intensive monitoring program relating WWTP creeks. Specific threshold concentrations ammonia, dissolved oxygen nitrite defined, depending frequency occurrence duration SOTs CSOs. higher planning costs, primarily program, compensated by savings construction In total, considerable achieved comparison previous separate design present emission-based regulations imposed this case study more restrictive requirements resulted final systems costs than would have been if had biological analyses data.