Method of commonly treating communal and sugar mill waste waters and treatment plant therefor
PL279076A2
Method of treating sewages in treatment plants utilizing biofilters
PL278036A1
Method of measuring level and quantity of water, sewages, sludge and supersedimentary water as well as other media in municipal utility facilities by ultrasonic measuring procedure
PL277782A1
System enabling combined operation of two boiler plants one fired with solid fuel and another with biogas
PL276939A2
Method of draining off sewages or water from a settling tank with horizontal flow of liquid contained therein
PL276938A2
Method of increasing reduction degree of impurities during biological treatment processes
PL275901A1
Biological sewage treatment plant
PL275902A1
Biological sewage treatment plant
PL274520A1
Water elutration system for heat distribution network
PL274271A1
Spacer-type dripping apparatus
PL257873A1
Multiduct sewer
PL254687A1
Water or effluent holding basin with emergency ground water admission
PL253601A1
Control system of the pumping station supplying water reservoir
PL253360A1
Pack-type biological treatment plant
PL253361A1
Pack-type biological sevage treatment plant
PL252679A1
Apparatus for mechanically and biologically treating sewages
PL252207A1
Separator for separation of suspended matter in particular from water and sewages
