Performance of wastewater stabilization ponds at different depths

✍ Scribed by B. B. Hosetti; H. S. Patil

• Book ID: 104654938
• Publisher: Springer Netherlands
• Year: 1987
• Tongue: English
• Weight: 664 KB
• Volume: 34
• Category: Article
• ISSN: 0049-6979
• DOI: 10.1007/bf00184760

✦ Synopsis

Investigations were made on wastewater ponds (cement cisterns) operated at 1.22, 1.83, and 2.44 m depths. Results revealed the layering of microorganisms at various depths. BOD and nutrient values and bacterial counts were maximum in the bottom layers and minimum at the surface in all the ponds. Concomitant with these variations, increases in pH and DO content were observed at the upper layers of the ponds. The activities of catalase, phosphatase, protease and amylase were directly related to microbial growth and activity. Low enzyme activity was recorded in the upper layers, whereas it increase with the increase in depth of the pond. From the present study, it is inferred that the pond depth could be increased beyond a generally acceptable value of 1.22 m particularly in tropical countries where enough light is available.