An evaluation of the use of the parameters currently being used to design and operate the activated sludge process is presented. The advantages and disadvantages for the use of each parameter are discussed. (MR)

This activity has been designed to help students understand a variety of concepts related to water use, efficiency, and students' own impacts on their watershed. It is intended for use both in the classroom and at home. The first concept covered in this exercise is, "What is a watershed?" Ideally this concept will be conveyed in the context of the…

Presents a literature review of solid wastes and water quality, covering publications of 1976-77. This review covers areas such as: (1) environmental impacts and health aspects for waste disposal, and (2) processed and hazardous wastes. A list of 80 references is also presented. (HM)

Important aspects in the operation of vacuum filters and several sludge conditioning variables are examined. A troubleshooting guide for problems of vacuum filters was also developed. (MR)

Described is a project to develop a comprehensive water and wastewater management program which will fulfill section 208 of Public Law 92-500 requirements. (MR)

A general discussion of sewage sterilization methods, including techniques using pH, Chlorine, Chlorine Dioxide, Ozone, Iodine and Bromine, metal ions, and cationic surface active agents is presented. (MDR)

Intended to be a source of information on the nature and significance of health effects related to chemical disposal, this document is the final report of the Executive Scientific Panel on Health Aspects of the Disposal of Waste Chemicals. The panel, which was organized by the Universities Associated for Research and Education in Pathology…

Encourages instruction about disposal of hazardous wastes in college chemistry laboratories as an integral part of experiments done by students. Discusses methods such as down-the-drain disposal, lab-pack disposal, precipitation and disposal, and precipitation and recovery. Suggests that faculty and students take more responsibility for waste…

Discusses some of the ways that local school systems are dealing with federal and state safety, health, and environmental laws with regard to the disposal of hazardous substances. Recounts the experiences of the Fairfax County (Virginia) Schools in dealing with the hazard communication (or right-to-know) standard. (TW)