Processing, August 2016
Consider floating covers on the mixed liquor of the aeration basin Some plants have had success with biodegradable oils or collapsing foam detergents Consider suppressing the droplets just above the surface by using water spray to beat down the wastewater droplets Consider disinfecting the airborne particles by using ultraviolet lights Cover the primary clarification process unit weir area to shield it from wind or use submerged effluent collectors such as pipes with orifices rather than weirs Avoid handling screenings by hand to prevent injuries Label piping so that potable and nonpotable water are clearly distinguished Processes to significantly reduce pathogens are treatment processes such as aerobic and anaerobic digestion air drying low temperature composting lime stabilization or other techniques that equally reduce pathogens If sludge treated in one of these ways is applied to land Food crops that could contact sludge cannot be grown for a period of time Animals whose products are intended for human consumption cannot be frozen for a while Public access is restricted for some months Ionizing radiation kills Salmonella and coliform bacteria Worker exposure can be reduced with the use of and proper care of protective clothing and equipment Heavy duty rubber gloves and boots can be used to prevent skin contact with wastewater and sludges Remove contaminated clothing after job completion Shower at work and change into clean clothes and shoes Wash hands with soap and water before eating or smoking and whenever hands contact wastewater and sludge Care for cuts and abrasions promptly Conclusion To keep workers safe operators can examine their plant practices and consider implementing the procedures listed Known in the industry as Wastewater Dan Dan Theobald proprietor of Environmental Services is a professional wastewater and safety consultant trainer He has more than 24 years of hands on experience operating wastewater treatment processing units FLEX PRO PERISTALTIC METERING INJECTOR PUMPS Proven Performance in the Toughest Applications Flex Pro Peristaltic Metering Pumps are capable of handling the aggressive and often high viscosity uids used in Processing and Water Treatment applications A wide range of feed capabilities and materials options are available Patented Tube Failure Detection Patented Safety Switch Exclusive Flex A Prene Tubing Provides Extended Tube Life CHEM PRO DIAPHRAGM METERING INJECTOR PUMPS Superior Chemical Resistance and Precise Metering When your system requires a high performance high quality chemical metering injector pump Choose Chem Pro Smooth powerful variable speed motor no hammering Precision turndown ratios Exclusive DiaFlex PVDF Diaphragm zero delamination zero breakdown 5300 Business Dr Huntington Beach CA 92649 USA IP66 NEMA 4X WASH DOWN IP66 NEMA 4X WASH DOWN 714 893 8529 sales@ blue white com www blue white com Write in 302 or request info at fcm hotims com www flowcontrolnetwork com August 2016 SS 7
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