Upgrading aeration system performance in secondary basins treating pulp and paper wastewater: A review

摘要

Secondary wastewater treatment aeration systems are an integral part of many mills' pollution control operations. Several factors can drive the need for aeration system performance upgrades, including changing mill production regimes, increased environmental compliance requirements, and equipment deterioration. However, optimal upgrade designs can be difficult to achieve because of the many interrelated and site-specific factors that influence secondary treatment performance. This article is intended as an introductory resource to understanding and addressing the complexities often associated with achieving an optimal aeration system upgrade. Relevant aeration and mixing science fundamentals and commonly employed aeration technologies are summarized and reviewed. The application of wastewater treatment computer models is examined as it pertains to aeration system design and operation. Recommendations for aeration system upgrade projects include specific information needs, potential resource requirements, general model selection guidance, and discussion of potential model application methodologies.