1
Flocculating chemicals for treating waste and industrial process water; Flocculants; Chemical auxiliaries for use in the coagulation of lacquers; Water treatment preparations; Bacteria for waste water treatment; Biological water treatment preparations; Additives (Chemical -) for use in the cleaning of water; Carbon; Chemicals for use in the treatment of waste water; Chemical substances, chemical materials and chemical preparations, and natural elements; Defoamers for effluent; Bacteria for sewage treatment; Bacterial cultures for wastewater treatment; Microalgae for waste water treatment; Tanning substances; Fertilizers; Mud dispersants; Chemicals for use in cleaning water
11
Purification installations for sewage; Industrial waste water purification plants; Water purification installations; Water purifying apparatus; Water purifiers for industrial use; Filters for water purifiers; Tap-water purifying apparatus; Water treatment units for aerating and circulating water; Water purifiers for household purposes; Sanitary installations, water supply and sanitation equipment; Water purification, desalination and conditioning installations; Filters for wastewater; Sewage disposal plants; Sewage purification apparatus
40
Waste water treatment; Industrial treatment of effluents; Treatment of toxic sludges