The Efficiency of Removing Organic Matters and Colour from Groudwater Using Coaguliants Organini jungini ir spalvos alinimo i po eminio vandens efektyvumas naudojant koaguliantus

Organic matter in drinking water must be removed as it causes many problems such as changes in colour, taste, odour and lower quality of water. During the chlorination process, humic acid reacts with chlorine and produce toxic disinfection-by-products. The study has used three coagulants: polialuminium oxychloride (PAC), aluminum sulphate and iron (III) chloride. The paper presents the outcomes of removing organic compounds from groundwater, investigates the decolourisation process and discusses pH impact on removing organic compounds and water colour. Aluminum based coagulants have been found to be the most effective regents. pH values have also a very significant impact on the effectiveness of the water coagulation process. Article in Lithuanian Organinius junginius i geriamojo vandens alinti būtina, nes jie suteikia vandeniui spalv , vanduo gyja nemalon skon ir kvap . Organin s med iagos ma ina vandens ruo imo proces efektyvum ir reaguodamos su dezinfekcin mis med iagomis sudaro antrinius dezinfekcijos produktus, kurie yra toksi ki. iame straipsnyje nagrin jamas organini jungini alinimo i po eminio vandens ir vandens spalvos ma inimo efektyvumas naudojant koaguliacijos proces . Aptariama, koki tak organiniams junginiams alinti ir spalvos intensyvumui ma inti turi vandens pH vert s. Tiriant buvo naudojami trys koaguliantai: polialiuminio oksichloridas, aliuminio sulfatas ir gele ies chloridas. Atlikus tyrimus nustatyta, kad efektyviausiai organinius junginius alina aliuminio sulfatas ir polialiuminio oksichloridas. Naudojant aliuminio sulfat , vandens spalvos intensyvumas suma inamas 83 %, o organin s med iagos – 85 %. Nustatyta, kad didinant koaguliant dozes ma ja vandens pH vert s, o tai didina likutinio aliuminio koncentracij ir blogina koaguliacijos proces .