COMPANY WATER TREATMENT GAS TREATMENT ANIMATIONS PRODUCTS OUR CUSTOMERS CONTACT INFORMATION OPEN JOBS In English Wiser Oy Wiser Oy is a company operating in Kerava, founded in 1986, owned by the Lahti-based Paananen family. From the beginning, our activities have focused on gas and water purification. Our gas treatment solutions focus on the removal of solids and harmful gases such as ammonia and hydrogen sulfide from the exhaust gases of various processes. Our water treatment solutions are used e.g. oil separation and the removal of bio-sludge and solids from the treated water. Our solutions are especially suitable for the pre-treatment of industrial wastewater before it is discharged into a sewer or our own biological treatment plant. The majority of our products are patented. Environmental requirements and maintenance constantly present new challenges and needs. Our customers are industry and municipalities. Please also read about us at HighTech Finland