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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