PPT-Chlorine Bleach on Microbial Resistance

Daniel Crawford Grade 11 Central Catholic High School Antibacterial Agents Welldocumented evidence that bacteria are able to develop resistance to antibiotics Different antibacterial agents commonly used. The DPD Colorimetric Method. Quality Assurance and . Quality Control. Dale Walker. City of Olean. Senior Water Plant Operator. Chlorine Residual Testing. Overview of Presentation. Part 1 – Quality Assurance and Quality Control. Chlorine Demand. Chlorine gets used up when disinfecting water. The total amount of chlorine that must be added to the water to disinfect it is its . chlorine demand.. Would good water have a high or a low chlorine demand. Updated: January 2015. By Jerald D. . H. endrix. Microbial Classification . and Taxonomy. Classification Systems. Levels of Classification. Definition of “Species”. Nomenclature. Useful Properties in Microbial Classification. . Chlorine Mixing and Contact Time for Ct. Harris County Wastewater Symposium. Wastewater Treatment Plants & Bacteria: Strategies for Compliance. Tim Brodeur, PE. April 26, 2011. Chlorine Contact Chambers . A. Metabolism. 1. Anabolism. A) synthesis reactions (building up). 2. Catabolism. A) lysis reactions (breaking down). B. Enzymes. 1. proteins that facilitate chemical reactions. Microbial Metabolism. THE ORIGIN AND EVOLUTION OF MICROBIAL LIFE. HOW DID LIFE ORIGINATE?. SPONTANEOUS GENERATION. LIFE ARISING FROM NON-LIVING MATTER. LONG BELIEVED AS THE ACCEPTED EXPLANATION OF ORIGINATION OF LIFE. EXPERIMENTS EVENTUALLY SHOWED IT TO BE IMPOSSIBLE. 4.8.1.2 Required—Elimination of elemental chlorine as a bleaching agent in paper-based packaging material . Product criterion:. Manufacturer shall state in the manufacturer’s environmental packaging requirement that elemental chlorine shall not be used as a bleaching agent to bleach virgin or recovered content fibers used in paper-based product packaging.. Aquaculture Processes. Marine Biotechnology Lab . Determination of active chlorine content in commercial grade bleach (hypochlorite solution). Preparation of a disinfecting 500 ppm hypochlorite solution from commercial grade bleach. CAS# 7782-50-5. UN/NA# 1017. Steven Santos. City of Long Beach . Dept. of Health & Human Services – Environmental Health Hazmat. Topics. What is Chlorine?. Identification. Risk & Exposure. Symptoms. •. I. ngestion of aerosolized vomitus. •Indirect: . -exposure . to . fomites. --. contaminated . water or food, . Infectious . dose. : . low, 10 . particles. Norovirus. Transmission, Exclusion. •. I. ngestion of aerosolized vomitus. •Indirect: . -exposure . to . fomites. --. contaminated . water or food, . Infectious . dose. : . low, 10 . particles. Norovirus. Transmission, Exclusion. Microbiology. Microbial Growth. Microbial requirements for growth:. 1. . Physical. A. . Temperature. Optimal growth temperature. Permissible range. human pathogens optimal = . 37°C. Microbial Growth. It kills stuff ( ). Residual. It’s the law… But is it a good idea?. Chlorine is the only available disinfectant that provides a residual. Recontamination. Does a chlorine residual provide protection against recontamination?. DWQR Risk Assessment Training. 2018. Overview. . Usage. . . Usage. . . Key Points to Watch For. . Key Points to Watch For. . Questions. . TCL1. Could . undisinfected. water pass into supply? (Has the chlorine dosing system appropriate alarms or an automatic shutdown arrangement?).