Complete apparatus serving for biological or third-level purification of sewage water of public canalization or industrial waste water containing organic impurities
HU911469D0
Process and apparatus for purification of sewage water by means of biological sludge having a one water volume aerating and sedimentation basin with biological sludge being suitable for arbitrary technology
HU911246D0
Trussing and method for mounting and building-in the same
HU910924D0
Method for securing the vehicular or/and pedestrian traffic and/or conducting ducts of public works between the two banks of live water particularly river
HU910813D0
Closed-sectional linear engineering structure particularly tunnel and method for building the same
HU910385D0
Wall structure particularly for limiting the dropping bodies usable in sewage purification
HU908386D0
Integrated biological sewage cleaning reactor
HU907082D0
Method for building lowering engineering structure provided with water- and/or heat-insulating and/or wear-resistant lining
HU906433D0
Equipment for removing and forwarding scum from the surface of liquid in round, particularly water or sewage treating basin
IT9021034D0
Stratified structure in reinforced concrete, procedure for making it, prefabricated in reinforced concrete, formwork and procedure for making the prefabricated elements in reinforced concrete, for example box-form prefabricated elements with double slab
HU903185D0
Closing valve operated by vacuum
HU902083D0
Settling apparatus particularly for purifying water or sewage
HU901170D0
Apparatus for material-transmitting respectively material-separating grated structures usable in water and sewage purification
HU900877D0
Device for mixing fluid with gas or/and other fluid
HU900860D0
Bed casing particularly for beds of trapezoidal section
HU900742D0
Apparatous for biological treatment of sludges
HU900674D0
Apparatus for settling sludge or/and water containing scale originating from metallurgy of ferrous metals
HU900266D0
Vacuum valve
HU900116D0
Apparatus for mixing fluids having quality different from each other particularly sewages and apparatus for contacting water and chemical agent particularly treated sewage and chlorine for the purpose of disinfection
