Získávání fosforu z kalových vod

Abstract

This diploma thesis is interested in the possibility of obtaining phosphorus from sludge waters and the efficiency of its removal. The theoretical part deals with wastewater treatment, sources and characteristics of phosphorus, the occurrence of phosphorus in water, methods of determination of phosphorus in water, methods of removal and recycling of phosphorus from waste water. Practical parts show the results of precipitation of phosphates from sludge water. Laboratory samples of fugat from two sewage treatment plants were tested. In one sample, the phosphates were precipitated with iron sulfate and calcium hydroxide. In the second sample, sludge water was first concentrated by electrodialysis, then precipitated from the formate from the concentrate from the phosphates.