Increased population in Paragould, Ark., forces city to expand wastewater treatment plant to better manage sludge disposal
By Christopher L. Komline Does this sound familiar? Your lagoon is filling with both primary and secondary sludge, and will be at capacity within the next two years. Paragould,Ark., a growing city of 22,500 located in northeast Arkansas, had just that problem. Due to rapid ...
PRETREATMENT OPTION TO ENSURE LONGER RO MEMBRANE LIFE By Jane Mai, EIT, B.A.Sc. Eco-Tec Inc.
Much like death and taxes, reverse osmosis membrane fouling is inevitable. However, there are preventative measures that can be taken to minimize scaling and fouling that will ensure longer reverse osmosis membrane life.
REVERSE OSMOSIS Reverse osmosis (RO) involves forcing water through a ...
As the main consumer of electricity in a wastewater treatment plant, the aeration system weights most heavily on the costs of operation. Climatic changes, the 2007/08 rise in the costs of energy, and the public support for green initiatives have raised the level of awareness for our use of energy, and this has spread far beyond the circles of the environmentally concerned: energy efficiency has ...
A large construction site required a temporary but sustainable water supply to fill water spray trucks used for dust control. The only convenient water source was from a river about 1.5 miles away from the construction site. Fences that contain livestock blocked access to the river. This was a big problem for the contractor since it would take too long to open and close the gates whenever a water ...
A compounding aseptic containment isolator (CACI) is
designed to provide worker protection from exposure to undesirable levels of airborne drug throughout the
compounding and material transfer processes and to provide an aseptic environment for compounding sterile
preparations. Air exchange with the surrounding environment should not occur unless the air is first passed
through a microbial ...
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