Central drinking water supply; Basic principles relating to the requirements on drinking water Planing, construction and operation of the installations— 29 стр.
Treatment of water of swimming pools and baths - Part 4: Combination of process: Flocculation, ozonisation, multilayer filtration, chlorination— 10 стр.
Treatment of water of swimming-pools and baths - Part 3: Combination of process: Flocculation, filtration, ozonization, absorbing filtration, chlorination— 7 стр.
German standard methods for the examination of water, waste water and sludge; summary indices of actions and substances (group H); determination of adsorbable organically bonded halogens (AOX) (H 14)— 11 стр.
