WarezPuzo

Name: outapiaries and their management-dadant 1919
Format: pdf
Size: 15.82 MB

Title: Outapiaries and their management
Author: Dadant, Maurice George. [from old catalog]
Language: angielski
Year: 2012
Subjects: Science & Technology, Nature, Engineering, Ecology & Environmental Sciences, Hydraulic Engineering, Aquatic Life & Sciences, Ecology, Environmental Conservation & Protection, Marine Terrain, Natural Terrain, Ecology - General & Miscellaneous, Environmental Conservation & Protection - General & Miscellaneous, Hydraulic Engineering - General & Miscellaneous, Natural Resources - General & Miscellaneous, Natural Terrain - Lakes & Ponds
Publisher: The Delano Max Wealth Institute, LLC.
ISBN: 9783954274451
Total pages: 131

Elevated phosphorus concentrations commonly promote excessive growth of algae in waters nationwide. When such waters are used for public supply, the algae can plug filters during treatment and impart tastes and odors to the finished water. This increases treatment costs and results in finished water that may not be of the quality desired for public supply. Consequently, copper sulfate is routinely applied to many reservoirs to control algal growth but only is a "temporary fix" and must be reapplied at intervals that can range from more than 30 days in the winter to less than 7 days in the summer. Because copper has a maximum allowable concentration in public drinking water and can be toxic to aquatic life, water suppliers commonly seek to develop alternative, long-term strategies for managing reservoirs. Because these are nationwide issues and part of the mission of the U.S. Geological Survey (USGS) is to define and protect the quality of the Nation's water resources and better understand the physical, chemical, and biological processes in wetlands, lakes, reservoirs, and estuaries, investigations into these issues are important to the fulfillment of the mission of the USGS.