4270001 Sewage screening plant and equipment
4270002 Grate cleaning appliances, automatic, effluent treatment
4270003 Presses, sewage screenings
4270004 Filter presses, effluent and sewage treatment
4270005 Sewage and effluent treatment plant, complete
4270006 Pumping systems, sewage treatment plant
4270007 Water intake screen cleaning equipment for hydroelectric power stations
4270010 Comminutors, sewage treatment
4270011 Pumps, disintegrator, effluent treatment
4270015 Tanks, effluent treatment
4270016 Sedimentation tanks, effluent treatment
4270017 Digesters, anaerobic, effluent treatment
4270018 Degassing equipment, vacuum, for sewage and effluent plant
4270019 Activated sludge plant, municipal and industrial, effluent treatment
4270020 Activated sludge plant, mini installations, effluent treatment
4270021 Sludge thickening plant, effluent treatment
4270022 Sludge extractors, effluent treatment
4270023 Sludge compacting equipment, effluent treatment
4270024 Sludge driers, effluent treatment
4270025 Centrifuges, effluent treatment
4270026 Hydrocyclones, effluent treatment
4270030 Incineration plant, sewage sludge
4270031 Biogas driers
4270032 Parts and accessories for sewage sludge treatment plant
4270034 Filter-beds, screening, for coarse solids, effluent treatment
4270035 Filter-beds, sand, for water treatment
4270036 Filtration equipment, water and effluent treatment
4270037 Water filtration equipment, activated carbon
4270042 Diffusers and aerators, effluent treatment
4270045 Flotation plant, effluent treatment
4270046 Flocculation plant and equipment, water and effluent treatment
4270047 Polymer solution preparation plant, water and sewage treatment
4270048 Surface skimmers, water treatment plant
4270049 Resin traps for pipes, water treatment
4270050 Evaporation plant, effluent treatment
4270052 Odour treatment plant, effluent treatment
4270053 Osmosis systems, water treatment
4270054 Sewage and effluent handling equipment, vacuum or compressed air operated
4270055 Reverse osmosis systems, water treatment
4270101 Effluent treatment plant, metal industry
4270102 Effluent treatment plant, oil refinery
4270105 Effluent treatment plant, for mines and quarries
4270107 Effluent treatment plant, agricultural
4270108 Effluent treatment plant, grain mills and distilleries
4270110 Effluent treatment plant, dyes
4270112 Effluent treatment plant, marine
4270113 Effluent treatment plant, paper industry
4270114 Effluent treatment plant, wood processing industry
4270115 Effluent treatment plant, waste fibre recovery
4270116 Effluent treatment plant, waste ink and starch recovery
4270117 Effluent treatment plant, recovery of hydrocarbons
4270118 Effluent treatment equipment for the printing and graphics industry
4270119 Detoxication plant, effluent treatment
4270120 Bactericidal treatment plant, process water
4270124 Water softening plant, industrial
4270125 Water chlorination plant
4270126 Water dechlorination systems
4270127 Water demineralisation plant
4270128 Water decalcification plant
4270129 Water neutralisation plant
4270130 Water deacidification plant
4270131 Water dealkalisation equipment
4270132 Water deionising equipment
4270133 Water oxygenation plant
4270134 Water ozonisation plant
4270135 Water sterilisation plant
4270136 Water clarification plant
4270138 Water de-aeration equipment
4270139 Water desalination plant
4270140 Sea water desalination plant
4270141 Chlorine generators for swimming pools
4270142 Swimming pool water treatment plant
4270143 Swimming pool water filtration plant
4270144 Rainwater collection systems
4270145 Cleaning systems for rainwater collection tanks
4270146 Water purification equipment, ultra-high purity
4270147 Water purification equipment, ultraviolet (UV) light
4270148 Water purification systems for flue gas desulphurisation plant
4270149 Filtration plant for industrial water, standby, mobile
4270150 Water purification installations, electrochemical
4270151 Drinking water treatment and purification plant
4270152 Drinking water disinfection systems, electrolytic
4270153 Filter-bed regeneration equipment, effluent treatment
4270154 Treatment systems for water percolated from solid urban waste disposal areas
4270155 Wave generating equipment, air injection, for swimming pools
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