REMOVAL OF DISSOLVED ORGANIC CARBON BY PROCESSES OF COAGULATION

摘要

The removal of natural organic matter is presented in this paper in conventional terms: turbidity, chemical organic demand (COD), total organic carbon (TOC), colour (A_(436)); and in unconventional terms: dissolved organic carbon (DOC), UV absorbance at λ=254 nm (A_(254)), at λ=365 nm (A_(365)) and specific UV absorbance (SUVA), expressed as the ratio between absorbance A_(254) and dissolved organic carbon (DOC), from water in concordance with the coagulation process. The use of the enhanced doses of coagulant improved the efficiency of organic matter removal from water samples. The results for DOC and TOC indicated an efficiency removal of 31.5-51.0% and for A_(254)-A_(365) the efficiency removal ranged between 17.4-76.4%.