ABSTRACT
Ifyou gave me several million years, there would be nothing that did not grow in beauty if it were surrounded by water.23
6.1 INTRODUCTION
I F iron and manganese are not removed in the treatment process, iron and manganese precipitation will impart color and turbidity to water, giving it a yellow-brown to black appearance. The precipitates also cause deposition problems in the distribution system and staining problems with plumbing fixtures and laundry. Another condition associated with the presence of iron and manganese in the distribution system is the growth of microorganisms. An accumulation of these growths causes a reduction of carrying capacity and possible clogging problems. Dissolved iron concentrations in excess of approximately 0.3 mg/L cause problems. Dissolved manganese causes problems at lower concentrations and should be limited to approximately 0.05 mg/~.24
