ABSTRACT
Clean water is recognized as an important and growing priority and is seen as a major challenge worldwide because potable water is being used faster than it is replenished. Phosphorus in surface water is one of the most common causes of impairment. In addition to eutrophication, a more recent impact is the growth of cyanobacteria (blue green or toxic algae; Figure 31.1). The impact to ecological health and economic loss due to reduced
CONTENTS
31.1 Problem ............................................................................................................................... 627 31.2 Phosphorous Removal Technologies .............................................................................. 629
31.2.1 Chemical Precipitation ..........................................................................................630 31.2.2 Sorption of Phosphorous ......................................................................................630 31.2.3 Mechanisms for Sorption of Phosphorus ........................................................... 632
31.2.3.1 Aluminum-and Iron-Containing Media ............................................ 632 31.2.3.2 Calcium-Rich Media ...............................................................................633
