wastewater filtration apparatus; water filtration installations; water filtration and purification apparatus; water purification and filtration apparatus; membrane filtration units for water treatment apparatus; waste water filtration apparatus; reverse osmosis filtration units [water treatment equipment]; reverse osmosis water filtration units; membrane filtration apparatus; water purifying installations; wastewater purification units; wastewater purification installations; water filtering units; devices and systems for purifying water comprised of water filters; installations for water filtering; water filtering installations; installations for purifying water; filters for refrigeration systems; industrial water treatment apparatus and installations; sewage purification installations; wastewater treatment installations; water filtering units for industrial use; water purifying machines; apparatus and installations for purifying industrial water; wastewater treatment apparatus; cooling installations for water; water filtering units for aquariums; waste water treatment installations; waste and wastewater treatment machines; purification installations for sewage