TOC Monitoring Upstream of Paper Mill Wastewater Treatment Facility Using Online TOC Analyzer

Introduction

At wastewater treatment facilities of various types of manufacturing plants, pollution load monitoring (upstream monitoring) is becoming increasingly important to ensure appropriate and stable operation and water pollution accident prevention. Activated sludge treatment methods widely used in wastewater treatment rely on such operational conditions as pollution load, MLSS, and amount of ventilation, etc., but among these, pollution load varies depending on the operating status of the plant, so continuous monitoring is essential. Continuous and stable measurement of TOC in highpollution samples such as the influent water in wastewater treatment facilities is not easy. In particular, paper mill wastewater, in addition to containing large amounts of pulp residue, provides an environment that facilitates microorganism proliferation. This leads to such problems as obstructed flow lines and the formation of biofilms at surfaces that are exposed to direct contact with these organisms, such as at water sampling points. Here, using the online TOC-4200, we introduce an example of continuous measurement of paper mill wastewater having such characteristics.

February 24, 2015 GMT