Water Quality Management Lecture Notes PDF
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Summary
These lecture notes provide an introduction to water quality management. They cover topics such as environmental functions, like water supply and wastewater management, and different aspects of wastewater, including its characteristics and flow rates. Regulations and engineering principles are important aspects of the notes and are used to promote a better understanding.
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Lecture 1: Introduction to Water Quality Management C: Commercial I: Institutional Environmental Functions Ind: Industrial - Source (Water Supply) Inf: Infiltration/Inflow...
Lecture 1: Introduction to Water Quality Management C: Commercial I: Institutional Environmental Functions Ind: Industrial - Source (Water Supply) Inf: Infiltration/Inflow Consumption rate < regenerative capacity - Sink (Wastewater Management) Average Dry Weather Flow - Average flow rate over a Pollution rate < assimilative capacity 24-hour period Wastewater - Evaluating wastewater treatment plant - Combination of liquid- or water-carried wastes (WWTP) capacity removed from (SOURCES) households, - Estimating pumping and chemical costs, commercial and industrial establishments, and sludge solids production, and organic-loading institutions, together with groundwater and rates stormwater (if present). As a practical matter, however, WWTP has to be Contents of Wastewater designed to meet a number of conditions that are - Organic Materials - proteins, carbohydrates, influenced by flow rates, wastewater characteristics, fats and oils, surfactants as well as peaking conditions. - Pathogens - disease-causing organisms: e.coli, HEPA, rotavirus, parasitic worms) Peak Dry Weather Flow - Maximum flow rate over a - Toxic Compounds - heavy metals, pesticides, 24-hour period solvents) - Nutrients - nitrogen and phosphorus - Designing equalization basins, chlorine-contact tanks Emerging Pollutants - Pharmaceuticals and personal care products 𝑃𝐷𝑊𝐹 = 𝑃𝐹 × 𝐴𝐷𝑊𝐹 (PPCPs) - Microplastics and nanoplastics PDFW: peak dry weather flow PF: peak factor Wastewater Engineering ADWF: average dry weather flow - The application of the basic principles of science and engineering to the problems of Wastewater Characteristics water pollution control - Understanding of the nature of wastewater is - GOAL: protection of the environment in a essential in the design and operation of manner commensurate with public health, collection, treatment, and disposal facilities economic, social, and political concerns - Different from treatment processes Wastewater Flowrates 1. Physical - color, temperature, turbidity, pH, - Determining wastewater flow rate is conductivity fundamental in the design of wastewater 2. Chemical - TSS, 𝐵𝑂𝐷5 , metals, nutrients collection, treatment, and disposal facilities 3. Biological - bacteria, virus, algae Ways to estimate wastewater flow rates Regulations - Records or field measurements - Water supply records DENR Administrative Orders Components of Wastewater flows DAO 1990-34 (Revised Water Usage and - Domestic (Sanitary) Classification) - Water Body Classification - Commercial and Institutional DAO 1990-35 (Revised Effluent Regulations) - Effluent - Industrial Standards - Inflow/Infiltration DAO 2016-08 (Water Quality Guidelines and General Effluent Standards) Wastewater Return Factor 1. Primary - required minimum water quality - A portion of water that reaches the sewer parameters to be monitored for each water system body - 65% to 85% of per capita consumption 2. Secondary - used in baseline assessment as part of Environmental Impact Assessment Flow Rate Estimation for Design (EIA) Dry Weather Flow DAO 2021–19 (Water Quality Guidelines and General Effluent Standards) 𝐷𝑊𝐹 = 𝐷 + 𝐶 + 𝐼 + 𝐼𝑛𝑑 + 𝐼𝑛𝑓 EMB Statistics (Water Quality Management Data) D: Domestic
