Most of the energy needed to operate APRIL's pulp and paper mills is created through burning biomass materials, which are by-products of the pulp production process.

The mill uses extended Superbatch cooking, oxygen delignification and Elemental Chlorine Free (ECF) to produce bleached hardwood kraft pulp.

ECF is favoured by US Cluster Rule for New Mills. These rules are applied in order to protect community health of the villages around the mill and to maintain normal aquatic and ecosystem functions of the nearby Kampar River.

Wastewater is treated using the Ahlstrom USF Aquaflow process with bio-sludge treatment before the effluents are discharged. The facility includes four primary clarifiers, six secondary clarifiers, one equalization basin, one primary aeration basin with 16 aerators and one secondary aeration basin with 7 aerators.

The modern effluent treatment process put in place enables the mill to meet and exceed the specifications of Indonesian regulations and the US Cluster Rule for New Mills, World Bank Pollution Prevention Guidelines, and the European Commission's Best Available Techniques for the Pulp and Paper Industry.

In addition to daily monitoring of wastewater quality conducted by APRIL, local environmental NGO's, educational institutions, and the government independently monitor and verify wastewater quality.

The APRIL mill is equipped with an extensive system of electrostatic precipitators that capture and prevent particles from entering the atmosphere. Mal-odorous gases are collected and incinerated either in the recovery boiler or in the lime kiln.

Wastewater quality, air emission levels and ambient air quality at the APRIL complex more than satisfy national and international safety standards.