Advances in Online Monitoring Applications for Pulp and Paper Wastevvater Treatment

摘要

A growth pressure is defined as any factor affecting the microbial community and as a result, overall treatment performance within a wastewater treatment system (WWTS) [1]. To evaluate, maintain, and/or increase the current performance of an aerated treatment system, it is critical to monitor all of the eight growth pressures -Biochemical Oxygen Demand (BOD) loading, pH, toxicity, aeration (dissolved oxygen), retention time, nutrients, biomass, and temperature. Several different approaches have been utilized to assess these growth pressures and can provide enormous insight into the capabilities and shortcomings of a WWTS. The information obtained is essential in supporting defensible business decisions supporting operational and capital expenses, such as baffle installation or repair, dredging, additional aeration, nutrient optimization, and/or temperature control.