Organic Sediment Removal Through Multiple Inversion

24 Feb

Excerpt from: Organic Sediment Removal Through Multiple Inversion

Prepared by: Robert L. Laing, President Clean-Flo Laboratories, Inc. Hopkins, Minnesota 55343

Abstract

Several researchers have noted increases in benthic invertebrates when water quality if improved. The purpose of this paper is to examine sediment removal as a result of these increases in bottom-feeding organisms.

Introduction

If the bottom waters of an eutrophic lake are oxygenated, the activity rate of anaerobic bacteria rapidly decline, Instead, aerobic bacteria thrive and begin decomposing the organic matter, while iron and other sediments are oxidized. This results in a general improvement in water quality, as carbon dioxide is removed by aeration, and anaerobic acids and gases are no longer produced.

Results

Significant removal of shoreline sediment was accomplished in all cases. Sediment depths at the diffusers themselves were also strongly affected an 18 m diameter craters in the sediment often were the result of Multiple Inversion. All test sites were far from the diffusers that cratering was not a factor.

It should be noted that the most rapid sediment removal occurred in the four lakes receiving C-FLO.

View the full case study here:

Organic Sediment Removal [PDF]