Japan Pulp & Paper Process Control Symposium

Modeling and Control of pH in Pulp and Paper Wastewater Treatment Process

Pulp and paper industry is responsible for large discharge of highly polluted effluents, which often be treated by biological treatment process. For biological treatment system, pH is an important environmental factor that can influence the activity of microorganisms. In general, the optimal pH for aerobic processes is around neutral pH (7_7.8) and for the anaerobic process is between 6.8_7.2. ...

Process Optimization and Model Based Control in Pulp and Paper Industry

In this paper we discuss the usage of physical models for diagnostics and process optimization in pulp and paper applications. Specially diagnostics with respect to hang ups and channeling in digesters is described, and how a rigorous model can be used for this, but also for the purpose of MPC, Model predictive control. An example of optimization of a complete pulp mill with respect to mill bal...

Membrane Fouling Prevention and Control Strategies in Pulp and Paper Industry Applications: A Review

Membrane separation technologies have recently received much attention, from lab-scale studies to full-scale operations, in the forest industry. However, membrane fouling comprises a signifcant obstacle to their broad application. Thus, to ensure cost-effective operation of membrane separation processes, the improved elucidation of membrane fouling and establishment of e...

Automation and Control of Pulp and Paper Processes

Environmental Noise Control in the Pulp and Paper Industry

The number of external noise sources of a paper making line is typically around 80 pcs. The major ones are process and machine room ventilation and vacuum pump exhausts. The noise control targets will dictate the scope and costs of sound attenuation. Considerable cost reductions can be achieved if the noise control design starts at the early stage of a project. Additionally, depending on the no...