Presentation on theme: "Module 1: Introduction to Wastewater Treatment"— Presentation transcript:
1 Module 1: Introduction to Wastewater Treatment Wastewater Treatment Plant Operator Certification Training
2 Unit 1 – Roles of the Treatment Plant Operator Learning ObjectivesList the roles of the Treatment Plant OperatorDescribe the operator responsibilities
3 Roles of the Treatment Plant Operator Planning, design and construction of new facilitiesAdministrationPublic RelationsOperation and MaintenanceSafetyContinuing Education
4 Planning, design and construction Offer input about the design and how the plant should be operated efficiently.Offer important information regarding the limitations of the current facility.Offer input on issues such as maintainability, security, operability, and safety.During construction, the Treatment Plant Operator should become familiar with the plant
5 Administration Workbook Page 1-2 Supervision Record Keeping Scheduling and supervision activities of other operators, mechanics, and laborers.Record KeepingMaintaining accurate records.Financial AdministrationIdentify and manage plant needs, including equipment and personnel.Create and manage an operating budget.
6 Operation and Maintenance Process Control DecisionsAny action to maintain or change quality/quantity of water being treatedLaboratory ProceduresProcess control depends on reliable laboratory data.Mechanical PrinciplesShould have a general knowledge of pumps, hydraulics, electric motors, and circuitry.
7 Public Relations Plant Tours Downstream User Interests Appearance is important.Annual “open house”Downstream User InterestsTreatment plants protect water for downstream users, so establish role as protector, not polluter.
8 SafetyWhat types of safety issues might there be at a sewage treatment plant?Open water tanksDisease (proper hygiene)Icing of walkwaysChemical useElectrical contact
9 Safety Safety Program Planning Treatment plants should be a safe place to work and visit.Ensure safety by planning programs and training the operators.
10 Continuing Education Keep up with new technology Maintain sufficient con. ed. to maintain licenseLearn advanced concepts like troubleshooting
12 Unit 1 Exercise True Quality or Quantity “c” Upgrading the electrical service panel
13 Unit 2–Characteristics of Wastewater Learning ObjectivesDescribe the typical composition of raw wastewater.Explain the effects of wastewater discharges on the receiving stream.Identify how treatment plant discharge impacts natural cycles.
14 Untreated Wastewater Contaminants in untreated wastewater Organic contaminants;Inorganic contaminants;Pathogens; andOther contaminants.Table 2-1 and 2-2 in workbook
15 Organic ContaminantsDerived from animals and plants, or may be manufactured chemical compounds.All organics contain carbon.Measured as BODUntreated influent BOD is 200 to 250 mg/L
16 Contaminants Cont’d Inorganic Contaminants Not biodegradable Include nutrients like phosphorous and nitrogenInclude heavy metalsPathogensThermal waste
17 QuestionA stream used for trout stocking is one example of a thermal sensitive stream where the stream temperature needs to be regulated. Can anyone think of any other reasons to regulate the temperature of discharges to the receiving stream?
18 Typical Composition of Solids in Raw Wastewater
19 Effects of Wastewater Discharges Workbook Page 2-10Oxygen depletion and odor in streamNegative human health effectsSludge and scum accumulations
20 Dissolved Oxygen for Aquatic Life DO depends on temperature and flowCold water can retain MORE dissolved oxygenWarm water can retain LESSTurbulent flow adds more oxygenFor aquatic life, DO should be at least 5 mg/L
21 Effects of Organic Waste Discharge Oxygen utilization by aerobic bacteriaOdor production by anaerobic bacteria
22 Oxygen Utilization by Aerobic Microbes Organic waste discharged to receiving stream.Aquatic organisms requiring oxygen to survive die off or migrate.Aerobic microorganisms use up oxygen to metabolize organic waste.In the absence of oxygen, anaerobic microorganisms dominate.Biological activity creates oxygen deficit in stream.Anaerobic activity causes putrification and odors
23 Human Health Untreated wastewater may contain pathogens Treatment Objectives:StabilizationDisinfection
24 Other Effects of WW Discharge Workbook Page 2-13
27 Key Points and Exercise Key Point on 2-16Unit 2 Exercise
28 Unit 2 Exercise A, C, and D “C” Organic contaminant BOD “C” 200 to 250 mg/L“B” 30 to 50 mg/LTrue“C” Industrial waste discharges
29 Unit 2 Exercise con’t B and C “B” Excessive nutrient availability… StabilizationTrueCarbon, hydrogen, oxygen, sulfur, phosphorous, nitrogen
30 Unit 3–Basic Wastewater Treatment Processes Learning ObjectivesDescribe how wastewater is collected and transported to a treatment plant.Indicate the function of each treatment process.Describe two methods of effluent disposal.
48 Disinfection Necessary to reduce disease causing pathogens Majority of plants use some form of chlorinationUltra-violet light disinfection becoming more popular due to security and safety issues with chlorine
52 Unit 3 Exercise Collection and conveyance, treatment, disposal Sanitary sewer, storm, combinedC, F, D, A, B, G, E2 ft/secSepticTrue
53 Unit 3 Exercise Weir, Parshall flume, Kennison “C” Sludge blanket “B” Secondary clarifierTrueNitrogen, PhosphorousStream discharge, land disposal
54 Unit 4–State and Federal Regulations Learning ObjectivesList the purpose of the Drinking Water and Wastewater Systems Operators’ Certification ProgramIdentify the classification and sub-classifications for wastewater operator licensesList the responsibilities of a licensed plant operator under Chapter 302.Identify and locate state and federal regulations that govern wastewater treatment.
55 Certification Program Chapter 302Exam requirementsClasses and subclasses
56 Operator O&M planning Report to system owner MAKE PROCESS CONTROL DECISIONSSOPs for non-certified operators
57 State Board for Certification Page 4-8 in the workbookDuties of the Board
58 Unit 4 Exercise A, C, and D True B, C, and D NPDES A and B False “D” State Board