I'm assuming you're looking for a comprehensive article or a downloadable PDF related to wastewater engineering by B.C. Punmia. Here's some information that might be helpful:
: You can find legitimate previews and some complete versions for academic reading on platforms like Scribd (Waste Water Engineering Including Air Pollution) Scribd (Alternative Version) Physical Copy bc punmia waste water engineering pdf full
The Need for Wastewater Engineering
: Design and construction of sewers, quantity of sewage, and sewer appurtenances. Treatment Processes Preliminary/Primary : Screening and sedimentation tanks. : Biological processes like Filtration and the Activated Sludge Process : Advanced treatment for specific pollutants. Disposal & Management : Natural methods of sewage disposal and sludge treatment. Environmental Engineering : Includes sections on Air Pollution Noise Pollution to provide a complete environmental overview. Related Volumes I'm assuming you're looking for a comprehensive article
: Physical, chemical, and biological constituents, including BOD and COD. Treatment Operations and biological constituents
Some of the key topics covered in the book include: