Pulp & Paper
Pulp and paper mills can be categorized by production processes, raw materials and end products. Each type of mill has its own, unique effluent streams and discharge requirements. The desire to reduce water consumption and reuse and recycle water serves to complicate the picture even further.
AnoxKaldnes originally started by developing biological treatment processes specifically designed for the pulp & paper industry. Today, we have a multitude of reference installations at pulp & paper mills worldwide (Africa, Asia, Australia, Europe, North America, South America). Processes include:
There are even MBBRs operating at thermophilic temperatures.
In addition to COD, BOD, AOX, chlorate and phenol removal, AnoxKaldnes can offer processes designed for very low excess sludge production (Nutrient limited BAS) and very low nutrient discharges. AnoxKaldnes tries to use existing equipment and tanks for retrofit arrangements as much as possible in order to reduce capital costs.
Because of our extensive experience with pulp and paper effluents, AnoxKaldnes can design a biological treatment plant for most types of mills without the need for pilot plant or laboratory trials. However, for unusual applications laboratory or pilot plant trials can be conducted.