by Environmental Protection Agency, Office of Research and Development, Municipal Environmental Research Laboratory, for sale by the National Technical Information Service in Cincinnati, Ohio, Springfield, Va .
Written in English
|Statement||by Richard J. Stenquist, Kathryn A. Kelly|
|Series||Environmental protection technology series ; EPA-600/2-80-120|
|Contributions||Kelly, Kathryn A., joint author, Municipal Environmental Research Laboratory, Brown and Caldwell|
|The Physical Object|
|Pagination||xiii, 178 p. :|
|Number of Pages||178|
Upgrading a Single-Stage Trickling Filter to a Two-Stage Biological System - Conversion From a Single-Stage to a Two-Stage Filtration System (Example C) Organically overloaded low, intermediate, and high-rate trickling filters may be upgraded by converting them to two-stage filtration systems, utilizing rock media for both stages. EPA/a August METHODS FCR IMPROVEMENT OF TRICKLING FILTER PLANT PERFORMANCE PART I MECHANICAL AND BIOLOGICAL OPTIMA by James C. Brown Linda W. Little Donald E. Francisco James C. Lamb University of North Carolina Chapel Hill, North Carolina Contract # Project # DGA Program Element #1B . Trickling filters are designed to maximize the removal of CO 2 where carbon dioxide degasses as the water trickles down through the biofilter media (Eding et . A biofilter is a bed of media on which microorganisms attach and grow to form a biological layer called biofilm. Biofiltration is thus usually referred to as a fixed–film process. Generally, the biofilm is formed by a community of different microorganisms (bacteria, fungi, yeast, etc.), macro-organisms (protozoa, worms, insect's larvae, etc.
Principal of Trickling Filter 1. Trickling filter is an aerobic attached growth biological system 2. The major components of the trickling filter are: • The tank • Rotary distributor • Filter media (crushed stones, gravel, plastic) • Under drain system • Ventilation 3. Biological process. Trickling Filters. Trickling filters are one of the oldest types of biological filters. Trickling filters filled with rock or coal were built in the late 's for sewage treatment. Trickling filters typically consist of a packing or media contained in a vessel. Instead of sand, they may use either a well graded calcareous gravel (oyster shell, dolomite, calcite or coral) of 2–5 mm in a bed with a minimum thickness of 3 in. ( cm) (Spotte, ), or plastic media of various shapes and sizes such as used in column aerators (see Fig. A) and wastewater trickling filters, with filter depths in the. This chapter provides an introduction to the problems of water and waste water. Reduction of the biological oxygen demand is discussed. When organic matter is added to an aquatic ecosystem it is immediately attacked by bacteria, which break it .
Aquascape Filtration and Spillways The Aquascape UltraKlean Biological Pressure Filter with a high output ultraviolet clarifier/sterilizer and an integrated electronic bulb-saver option, provides pond owners with optimum water conditions and crystal clear pond water. Literature review of air pollution control biofilters and biotrickling filters for odor and volatile organic compound removal Article (PDF Available) in Environmental Progress 24(3) - This book examines the practices used or considered for biological treatment of water/waste-water and hazardous wastes. The technologies described involve conventional treatment processes, their variations, as well as future technologies found in current research. The book is intended for those seeking an overview to the biotechnological. The media within the filter is made up of materials like plastic sheets, beads, lava rock, gravel or sand grains. The properties of the media should be such that it should have a high surface area for bacterial growth, pores for movement of water, clog .