PROGRAMME FOR ENVIROCELL TRAINING SEMINAR

OPTIMISING WATER CLOSE-UP AT PAPER MILLS

This one day seminar is aimed at production and technical staff at mills
and their suppliers who want to gain an insight into the motivations/problems
and the different technical approaches involved in closing up. This can only
be done by bringing together the quality, engineering, chemical and biological
aspects of the total machine/mill operation.

PROGRAMME

Motivations for reducing fresh water use

- legislative pressures such as integrated pollution control
- changes in setting discharge consents
- increased charges for water use and wastewater discharge
- improving mill environmental performance

Effects of water use on papermaking

- water treatment and quality effects
- changes in fundamental system parameters
- retention and other aspects of wet end chemistry
- process runnability and product quality
- system losses and wastewater quality
- overall balance of process and environmental changes

Approaches to closing up water systems

- reducing gross water requirements
- recycling of used waters and recycled water treatment
- integration with other clean technologies
- integration with external wastewater treatment system

Practical strategies for water optimisation at paper mills

- assessment of relevant external and internal factors
- understanding the existing water system and obtaining baseline data
- developing simple models for prediction of system impacts
- defining objectives/targets and evaluating options
- planning and implementation of optimisation programme
- monitoring impacts and adapting optimisation programme
- examples/case studies