Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants; German version EN 12255-15:2003— 19 стр.
Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 10: Specific principles for the equipment for thermal sludge drying— 16 стр.
Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 10: Specific principles for the equipment for thermal sludge drying— 25 стр.
Wastewater treatment plants - Principles for the design of structures and technical equipment - Part 2: Specific principles for the equipment for separating and thickening of solids— 28 стр.