Purpose of applying sewage retention. Characteristics of retention reservoirs. Analysis of three varieties of sewage retentioning. Results of functioning analysis for a sewage system with different varieties of retention application.
Storm overfalls in general-fluming sewage systems significantly decrease sanitary state and cleanness of rivers, flow-through reservoirs and coastal waters. Presentation of the ways of diminishing pollution charge dropped by the overfalls. Recognising the hazard and its scale.
Scheme for finał technological system. Computer simulation of the sewage treatment process during wet weather. Changes in the process of biological treatment. Options for biological grade working: omission channe! - working and not working states.
Basic technological diagrams for sewage systems discharge. Flow regulators in sewage systems. Use of storm separators: a flow-through from sewage system to a storage reservoir or directly to a receiver. Working scheme of a storm separator with a bottom sink and accumulating jump.
Characteristics of Łódź general fluming catchment area. Quality and quantity of general fluming sewage. Sewage contents in dry and wet weather. Own research for years 2003-2005, aimed at defining changes in city sewage's quantity and contents in 24-hour cycle and noticing changes in particular element's concentration.
Computer simulation as a convenient tool used for sewage treatment plant working and the influence of major changes on the treatment process analysis. Methodics of estimating the amount of generał fluming sewage directed to biological stage during precipitation flow, keeping the treated sewage guality on a law-regulated level.