A Systematic Study to Reduce Trihalomethane Precursors in Little Rock Drinking Water by Combined Alum Coagulation-Powdered Activated Carbon Treatment

Authors

Ali U. Shaikh, University of Arkansas at Little Rock

Document Type

Technical Report

Publication Date

6-1-1983

Keywords

Powdered Activated Carbon, Trihalomethanes, chloroform, bromoform, bromodichloromethane Dibromochloromethane, THM Precursors, Humic Acid, Direct Aqueous Injection, Solvent Extraction, Gas Chromatography

Abstract

Studies have been conducted to evaluate powdered activated carbon (PAC) as an agent for controlling trihalomethanes in drinking water. Laboratory studies indicate that PAC is highly efficient in removing free trihalomethanes in water within a few hours. The removal efficiency of humic acid, a known THM precursor, by PAC is considerably less. However, longer treatment time can remove the precursors quite significantly. Humic substances in surface water samples can also be removed by PAC.

Citation

Shaikh, Ali U.. 1983. A Systematic Study to Reduce Trihalomethane Precursors in Little Rock Drinking Water by Combined Alum Coagulation-Powdered Activated Carbon Treatment. Arkansas Water Resources Center, Fayetteville, AR. PUB101.
https://scholarworks.uark.edu/awrctr/264

Report Number

PUB101