Apparatus for measuring surface water in manholes of sewers
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Device for measuring the flow of liquids at inlets in a sewer manhole and method for determining the inlet quantities in a sewer network
DE102005030508A1
Gas lock for manholes and pipelines
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Apparatus for exhaust air purification of a wastewater structure
DE102004012708A1
Gaseous emissions from bulk liquid are reduced by covering surface with a layer of uniform large size floating spheres with free-poured smaller diameter spheres sealing gaps between the large spheres
DE10361532B3
Control valve with sand and leaf trap for drain in street or roadway has air access openings in sides of housing and float closing air valve when valve chamber is full of water
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Backflow protection, especially for a sewer
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Suction pressure container for waste water systems has at least one wall unstable to pressure but stabilised by clamping reinforcement inside container
DE10318908A1
Process for reducing fats in waste water and a device for carrying out the process
DE10301398A1
Method and device for the controlled removal of odorous gases from a sewage network
DE10107496A1
Device for preventing gas leakage in a sewer manhole
