Coagulants are used to neutralize the loads of solid particles and colloidal structures within the water, facilitate their coagulation and settlement and eventually removal from the water content. Organic coagulants can be used together with inorganic ones and additionally, they have certain advantages to the inorganic coagulants in processes where these can be used singly such as lower chemical dosages, lower sludge formation, compressible flock, ability to work within a wide pH interval, lack of residual heavy metals etc. Organic coagulants are quite effective in decolorization in waste water. They are frequently used for decolorization of colored waste waters from textile, paper, printing ink, paint and dye industries.