Water Treatment Mastery: Potable, Wastewater & Industrial

Explore global water resources, usable freshwater per person, and endowment needs, plus how contamination and uneven distribution drive water scarcity and the role of treatment and desalination.

Analyze water uses from urban to agricultural and industrial consumptive uses. Identify contaminants and learn parameters like chemical oxygen demand, biochemical oxygen demand, turbidity, nitrates, sulfates, and total dissolved solids.

Explore the color parameter in water treatment, distinguishing apparent color from true color and outlining removal methods such as coagulation or flocculation, sedimentation, filtration, adsorption on activated carbon, and oxidation.

Explain how odor and taste affect drinking water quality, and how aeration, tray systems, ozone, and activated carbon remove volatile compounds.

Identify and classify water solids as suspended, settleable, filterable, dissolved, and colloidal; explain how to determine and remove them using a primary settler, coagulation, flocculation, and sedimentation.

Analyze how temperature and conductivity affect water treatment, influencing gas solubility, reaction rates, and microbial activity. Explore salinity and total dissolved solids for desalination and irrigation.

Measure hardness by analyzing calcium and magnesium in water; high levels cause pipe scaling and boiler deposits, reducing flow and heat transfer, and hardness is measured by EDTA titration.

Explore how pH governs chemical and biological processes in water treatment, including coagulation and disinfection. Learn redox potential (ORP) as electron activity, measuring aerobic versus anaerobic conditions with millivolt sensors.

Learn how alkalinity buffers pH, how to measure and adjust it with carbonates, bicarbonates, and hydroxides, and how the Langelier index relates to scaling and corrosion.

Explore how dissolved oxygen enters water through atmospheric dissolution, photosynthesis, and aeration; apply Henry's law, and compare aerobic versus anaerobic metabolism for wastewater treatment and minimum dissolved oxygen for fish.

Learn how bod5 and cod measure biodegradable and total organic matter, using a five-day dark incubation at 20°C with nitrification control, then compute the biodegradability index to guide treatment.

Explore microbiological parameters and toxicity concepts in water, emphasizing disinfection of drinking water and wastewater, and introduce metals as key contaminants and precipitation-based removal methods.

Explore how nitrogen and phosphorus from wastewater and detergents drive eutrophication, triggering algal blooms, turbidity, and oxygen depletion that collapse aquatic ecosystems; examine nitrification, denitrification cycles, and phosphorus transformations.

Examine pesticides as diverse chemicals with toxicity, persistence, and bioaccumulation; compare organochlorines, organophosphates, carbamates, and pyrethroids, and discuss half-life and environmental impacts.

Analyze polychlorinated biphenyls, dioxins, furans, and hydrocarbons and their contamination of water. Examine bioaccumulation, persistence, and toxicity affecting the aquatic environment and drinking water.

Outlines how potable water meets sanitary, aesthetic, and microbiological criteria through conventional and non-conventional treatment, surface water and groundwater sources, and planning for supply, disinfection, and cost considerations.

Calculate endowment and the population projection to determine the required flow for future water supply, using area studies, climate, socioeconomic factors, and multiple projection methods to estimate the 30-year demand.

Learn to calculate daily and hourly flows from average flow using coefficients of variation, plan head losses, and design a drinking water treatment plant, considering surface water and groundwater sources.

Explore surface water intakes, including gravity, pumped, lateral, bottom, and transverse wall configurations, and their site, debris, and maintenance considerations.

Assess groundwater supply by evaluating aquifer status and coastal salinity risk, and describe extraction wells: dug, driven, and drilled, while avoiding floodlands, contamination, and keeping wells 25 m away.

Analyze roughing grids, three screen types (coarse to fine), and grit chambers in potable water catchments, emphasizing sedimentation, particle thresholds, flow velocities, and maintenance.

Understand how tray aeration removes iron and manganese by oxidation and precipitation, using trays with coke, stone, brick or ceramic, and the roles of pre chlorination, pH control, and filtration.

Coagulation and flocculation dose chemicals to neutralize particle charges, form flocs, and enable sedimentation for drinking, municipal, and industrial water treatment.

Explore the types of coagulants, such as aluminum and iron salts, that neutralize negative colloidal charges, and examine alkalinity, pH, and hardness changes during water treatment.

Explore rapid mixing strategies that disperse coagulants through hydraulic and mechanical mixers, producing turbulence for effective coagulation in drinking water plants.

Understand how flocculation speeds coagulation by using polymers that bridge particles, including cationic, anionic, and non-ionic flocculants, with jar tests to tailor dosage, improve sedimentation, and reduce coagulant demand.

Explore coagulation and slow mixing flocculation to form stable flocs, comparing hydraulic and mechanical flocculation in horizontal and vertical flow designs, guided by jar tests and coagulant pH ranges.

Perform jar test procedure to optimize coagulant and flocculant dosages for potable, wastewater, and industrial water treatment, using aluminum sulfate or ferric chloride with anionic polymers.

Extrapolate jar test results to plant flow to design coagulation dosing in small rural water plants, using stock solution preparation, dosing rates, and control curves for coagulants and polymers.

Explore sedimentation theory in water treatment, including coagulation and flocculation, horizontal-flow settlers, the four types—discrete, flocculant, hindered, compression—and rectangular settler design with inlet, sedimentation, sludge purge, and outlet zones.

Achieve homogeneous flow in the settler by using distribution devices such as a perforated diffuser wall, bottom flow baffle, or submerged orifice to prevent short circuits and sludge resuspension.

Learn how the rapid filter follows coagulation, flocculation and sedimentation, with sand over gravel, downward flow, and backwashing to remove clogs and restore uniform filtration.

Explain filter maturation after backwashing, as media settle and turbidity declines, and note how sand, anthracite, garnet, or ilmenite affect filtration rates.

Understand how sand size governs filtration speed, with slow filters at 0.15–0.3 mm and fast filters at 0.6–1 mm, and manage pressure filters, backwashing, and air-assisted processes.

Learn how chlorine disinfection works after filtration, including the roles of hypochlorous acid and hypochlorite, and how pH, temperature, and contact time influence effectiveness.

Explain how chlorine reaches the break point by reacting with ammonia and organics to form chloramines, then convert to free residual chlorine to ensure safe drinking water.

Learn practical disinfection methods for new potable water pipelines, including chlorine-based processes, storage tank contact times, ammonia-boosted residuals, and approaches to limit trihalomethanes with chlorine dioxide.

Ozone serves as a fast, strong disinfectant generated on site by corona discharge, diffusers or venturi injectors, offering higher oxidation potential than chlorine but no residual.

Ultraviolet disinfection uses low-pressure mercury lamps at 254 nm to inactivate microorganisms by damaging DNA and RNA, offering chemical-free, rapid treatment dependent on water transmittance.

Explain how drinking water plant sludge is thickened, dewatered, and dried or filtered for disposal under regulations, using gravity thickeners, drying beds, and polymer-assisted dewatering with filters or presses.

Learn desalination methods to convert seawater and brackish water into potable water. We introduce distillation alongside reverse osmosis, ion exchange, and electrodialysis, focusing on energy, brine, corrosion, pH, and disinfection.

Explore ion exchange with cationic and anionic resins that remove salts from seawater by swapping cations for hydrogen and anions for hydroxide, with regeneration cycles using acid and base.

Explore resin types by monomer class, including strong and weak cationic and anionic resins, gel and macroporous varieties, and their ion-exchange behavior.

Master the operation cycle of ion-exchange resin beds in vertical pressurized filters, including depletion, backwash, regeneration, and final rinse, while optimizing flow, pH, and regenerant chemistry.

Explain how ion exchange resin systems use strong cationic and anionic resins to remove salts via hydrogen and hydroxyl exchanges, with regeneration, pre-treatment, and factors affecting resin life and performance.

Explores mixed desalination using ion exchange resins for high purity water and industrial chromium removal, detailing regeneration and polishing steps and industry applications.

Explore reverse osmosis and osmosis fundamentals, including semipermeable membranes, driving forces, and pore-size distinctions from microfiltration to reverse osmosis, yielding permeate and concentrate.

Study osmosis, where water moves from lower to higher solute concentration through a semi-permeable membrane. Understand reverse osmosis under pressure and explore membrane materials and modules used in seawater desalination.

Explore spiral wound membranes in a membrane holder, where permeate travels via a central pipe and concentrate exits at the rear; understand single-pass and cyclic processes.

Assess feed water for membrane systems by monitoring salinity and pH to prevent fouling, using SDI, MFI, Longley index, and Stift and Davis index for pretreatment decisions.

Operate reverse osmosis with a flow regulation valve to achieve about 40–50% permeate, supported by pretreatments and high‑pressure pumps, while daily logs monitor recovery, concentration, and salt rejection.

Learn pretreatment strategies for reverse osmosis with the membrane system to produce drinking water, including chemical dosing, filtration, degassing, and pH adjustment for high recovery rates.

Electrodialysis uses a continuous electric field and ion exchange membranes to separate cations and anions into separate compartments, producing purified water and salt-rich brine.

Study softening to remove calcium and magnesium hardness from water using lime precipitation, carbonation, and ion exchange resin, with zeolites and alternative regeneration methods for boilers and drinking water.

Master activated carbon adsorption to remove organic contaminants from water, leveraging millions of micropores, mesopores, and macropores with a specific surface area of 500–1200 m²/g.

Explore physical and chemical adsorption on activated carbon, ion exchange, and reactivation via desorption and high-temperature regeneration.

Explore how iodine number indicates activated carbon adsorption capacity and porosity, while granular carbon filters with sand prefilters, backwashing, and stabilization support odor control and organic removal.

Explore municipal wastewater treatment by examining aerobic and anaerobic biological processes, domestic, industrial, and stormwater discharges, and pollutant load and population equivalents concepts.

Explore urban wastewater characterization through a comprehensive sampling campaign, measuring flows, temperature, pH, solids, nutrients, heavy metals, and industrial discharges to design compliant treatment plants.

Learn to size urban wastewater treatment plants through population projections, average and peak flows, Harman's peaking factor, and site considerations like slopes, climate, geology, and available treatment technologies.

Outline the wastewater treatment train from pre-treatment with screens and grit chamber through primary and biological reactor stages to tertiary treatment and sludge handling, plus overflow weir and storm tank.

Learn the essentials of preliminary screening and pumping, including roughing screens, hopper channels, and coarse, medium, and fine grids that protect pumps from large solids and grit.

Explore grit chambers and aerated grit chambers that use gravity and air diffusion to remove dense grit, separate organics, and improve downstream homogenization and degreasing steps.

Primary settling tanks remove settleable solids by gravity during 2–3 hours of laminar flow. Use static, dynamic or lamellar designs with scrapers, sludge withdrawal, and optional coagulation to boost removal.

Explore how secondary biological treatment targets dissolved and colloidal organics, forms flocks, and decants, while teaching catabolism, anabolism, and aerobic, anoxic, or anaerobic pathways.

Explore aerobic wastewater treatment, where oxygen, substrate, and nutrients drive catabolic mineralization and anabolic growth, while toxic substances and osmotic limits govern pretreatment and nitrification by autotrophs.

Explore the activated sludge process, including the reactor, secondary clarifier, primary settler, and recirculation and purge balance to maintain biomass and purify wastewater through aeration.

Describe the activated sludge reactor where bacteria in a floc metabolize biodegradable contaminants, forming microorganisms and clean water, then flow through the secondary clarifier toward tertiary treatment.

Identify how bacteria, protozoa, and metazoa drive wastewater treatment in the biological reactor, forming flocs and degrading organic matter. Explain how ciliates and rotifers clarify effluent and indicate plant performance.

Examine the floc structure formed by bacteria and extracellular polymers, highlighting the balance of micro and macro structures, including filamentous bacteria, for sedimentation across high-rate, conventional, and extended aeration systems.

Review and apply biological reactor control parameters to optimize activated sludge operation, monitor influent and effluent, and base decisions on cod, bod5, nitrogen, phosphorus, pH, and mass loading.

Explore activated sludge variants and learn to calculate mass loading (F/M) ratio using bod5, flow, and reactor volume, then adjust recirculation and purge to maintain removal and hydraulic retention time.

Calculate SV 30 and the sludge volume index (SVI) from SV 30 and suspended solids, derive S1 and S2 from 5/20/30 min readings, and keep pH 6-8.

Optimize wastewater reactor performance by keeping temperature between 15 and 33°C to support microbial activity and efficient oxygen transfer. Apply respirometry to monitor dissolved oxygen uptake rate and keep around 2 mg/L.

Calculate sludge age, the solids residence time, using purge flow, reactor volume, and solids, via recirculation and purge. Learn volumetric organic load and hydraulic retention time to assess treatment efficiency.

Compute recirculation flow and ratio in activated sludge using reactor and purge concentrations to balance biomass. Explore purge strategies and inoculation during startup to stabilize bod5 removal.

Explore how bod5 and cod indicate reactor performance, calculate the biodegradability index, and relate microscopic observations of sludge structures and sludge volume index to bulking risks and sedimentation control.

Explain how maintaining reactor alkalinity buffers pH shifts, monitor daily alkalinity and pH, and calculate removal efficiency for COD or suspended solids to optimize secondary settling tank operation.

Explore how activated sludge color and foam signal reactor performance, load, and oxygen. Learn to interpret color changes and foaming and apply defoamers, purge adjustments, and safe dosing.

Assess denitrification and biomass leakage in the secondary clarifier and adjust recirculation and purge times to keep effluent clear and minimize turbidity.

Compare activated sludge variants from conventional to completely mixed and step aeration, highlighting hydraulic retention time and sludge age. Learn how mass loading suspended solids and recirculation shape reactor performance.

Differentiate conventional activated sludge from extended aeration by reactor volume, showing lower mass loading and longer sludge age in extended aeration, with controls via COD, BOD5, and pH analyses.

Percolator filters operate by a rotating distributor that percolates wastewater through a filling material. Bacteria form a biofilm on the fill and biologically purify the water under aerobic conditions.

Explains trickling filters with the secondary clarifier, recirculation, pretreatment steps, and the biomass diversity—bacteria, algae, protozoa, and worms—driven by aeration and ventilation.

Explore how biomass adheres to support in trickling filters, detailing biofilm formation, maturation, and detachment, with aerobic and anaerobic zones, and discuss advantages and disadvantages for treatment.

Learn how organic load and surface hydraulic load guide trickling filter design, including reactor volume, height, surface area, and optimal irrigation flow and recirculation for bod5 removal.

Explore trickling filters with pre-treatment, primary treatment, secondary settlers, and recirculation strategies to manage biomass, pH, and removal of BOD, COD, suspended solids, and ammonia nitrogen.

Explore bio disks in rotary biological contactors, where a 1-2 mm biofilm forms on rotating disks to aerobically remove soluble, biodegradable, and colloidal organic matter from wastewater.

Explore bio disc reactors using polystyrene, PVC, or polyethylene discs to maximize surface area, aeration and mixing, and biofilm removal, and achieve efficient, multi-stage treatment with low energy.

Learn to operate bio disks, manage white biofilm and sulfides, adjust dissolved oxygen and organic loads, and optimize interstage splits, aeration, and pretreatment to sustain removal efficiency.

Explore aerobic wastewater treatment variants like SAF and IFAS, detailing fixed biofilm beds, aeration strategies, organic loads, and secondary clarification for efficient bod5 and COD removal.

Explore the moving bed biofilm reactor (MBR) with mobile filling and near-water density to sustain attached biomass, form a biofilm, and reduce clogging and reactor volume.

Explore membrane bioreactors (MBR) as a variation of the activated sludge process that replaces secondary settling with ultrafiltration or microfiltration, yielding high solids, compact reactors, and improved effluent quality.

Hollow fiber and flat plate membranes dominate MBRs, with hollow fibers delivering high-quality permeate and pore sizes near 0.0034–0.005 μm. Choose cross-flow or submerged configurations to control flux and energy.

Examine external and internal membrane fouling in water treatment, caused by minerals, colloids, oils, and biofouling, and how aeration, backwashing, and chemical cleaning restore permeate flux.

Explore sequencing batch reactor activated sludge processes, detailing filling, reaction, settling, and emptying cycles, intermittent discharges, and control strategies for high removal efficiency.

Explore fluidized bed biofilm reactors (FBRs), where high surface area inert filling supports dense biofilms to achieve high rate aerobic wastewater treatment with efficient biomass contact and rapid substrate removal.

Explore anaerobic wastewater treatments that use microorganisms to degrade biodegradable pollution without dissolved oxygen, producing methane and energy, and outline hydrolytic, acidogenic, acetogenic, and methanogenic phases.

Learn how anaerobic reactors operate through hydrolytic, acidogenic, acetogenic, and methanogenic bacteria, and how acidification and pH control alkalinity to maintain reactor efficiency.

Explore biogas from anaerobic digestion, dominated by methane and carbon dioxide, and examine inorganic and organic inhibitors that disrupt methane production and reactor stability.

Control anaerobic reactor pH by maintaining and increasing alkalinity, monitoring bicarbonate and fatty acids, using buffer, alpha, and Iapa ratios to prevent acidification.

Explore how temperature affects aerobic and anaerobic biomass activity, detailing mesophilic and thermophilic ranges, nutrient ratios, sludge purge, volumetric organic and hydraulic loading, and redox potential in reactor performance.

Examine the septic tank's two-compartment design, pretreatment steps, and the evolution from first-generation to second-generation anaerobic reactors, emphasizing sludge management and soil infiltration.

Design septic tanks for wastewater with 1–3 day residence time and 30–50% bod5 removal. Enhance with grease trap and a third compartment using filling material to reach 70% bod5 removal.

Infiltrate septic tank effluent into the ground through trenches or infiltration wells with perforated pipes, gravel, sand, and a plastic barrier to purify the water.

Examine the Imhoff tank, a two-compartment system for large wastewater: sedimentation and digestion, with sludge purge and scum chambers, where water enters at the rear and exits the front.

An anaerobic pond serves as the initial stage in a multi-pond system, with grids in a grid chamber, pretreatment, and retention time to optimize odor control and methanogenic activity.

Explore the conventional completely mixed contact reactor, its digester design, biomass suspension via agitation and recirculation, and mechanisms for reducing reactor size while maintaining high substrate degradation.

Examine the anaerobic filter, a packed-bed upflow reactor with adhered biomass on 3–5 cm filling, delivering up to 10 kg COD/m3/d and biogas.

Learn how the fixed film tubular reactor uses oriented filling to reduce clogging, increase porosity, and treat high pollutant loads, with startup, control, and purge strategies.

Explore uasb reactor principles, using granular or flocculant biomass to form a sludge bed and blanket for efficient COD removal, and the three-phase separator that segregates biogas, water, and biomass.

Water rises from bottom perforated pipes by pumping or gravity in a UASB reactor, promoting granulation of biomass and achieving 70–85% efficiency at six to twelve hours hydraulic retention time.

Learn to manage reactor sludge by performing sludge profile tests across multiple heights, maintain a constant sludge bed, and purge up to 5% of reactor volume to remove low-activity biomass.

Purge 60% from the sludge blanket and 40% from the sludge bed weekly, and estimate methane production at 127.9 m3 per day from a COD load of 400 kg/day.

Enhance uasb reactor operation through recirculation with alkalinity buffering, maintain optimal hydraulic retention time and temperatures, and implement modular startup with inoculation and purge to sustain efficient removal.

Learn to start up a Uasb reactor by calculating inoculum biomass and mass loading based on cod and volatile suspended solids, and manage feeding, monitoring pH, alkalinity, and volatile acids.

Discover anaerobic fluidized bed reactors that use uniform, high-surface media fluidized by upward flow to form a biofilm, enabling short hydraulic retention times and efficient COD removal with recirculation.

Explore AnMBR components and operation, membrane separation, biogas recirculation, and heating strategies that influence anaerobes from psychrophilic to thermophilic temperatures to improve COD removal.

Compare aerobic and anaerobic processes to reveal energy yields, byproducts, and cell reproduction differences; highlight methane production, oxygen requirements, and treatment implications.

Compare aerobic and anaerobic wastewater treatments, outlining advantages and disadvantages, then explore combined usb reactor with anaerobic or aerobic configurations for removal efficiency and lower costs, guided by flow-rate considerations.

Explore tertiary treatment objectives to remove suspended solids and dissolved organic contaminants, including coagulation-flocculation, filtration, polishing ponds, and activated carbon, plus chemical oxidation options like ozone and chlorine.

Remove ammoniacal nitrogen and phosphorus from treated wastewater using chemical methods. Stripping ammonia at high pH with alkali promotes volatilization, followed by precipitation with ferric chloride.

Understand nitrification and denitrification to remove nitrogen in wastewater using biological reactors. Learn about autotrophic and heterotrophic bacteria, oxygen demand, pH control, and the modified luzec Ettinger configuration.

Explore the nitrogen cycle in water treatment, detailing nitrification and denitrification, and the role of autotrophic bacteria. Maintain pH around 7.2–8.5, adequate alkalinity, and temperature between 15–35°C.

Explore nitrification and denitrification through modified Ludzack-Ettinger, Bardenpho, and Alpha configurations, detailing anoxic-aerobic sequences, recirculation, endogenous respiration, external carbon sources, and achieving total nitrogen targets.

Explore biological phosphorus removal with phosphorus accumulating organisms during alternating anaerobic and aerobic phases, including purging and secondary settling in the AoE fourdocs process.

Explore removal of carbon, nitrogen, and phosphorus using modified fourdocs or also h2o, five-stage bardenfleth process, UCT, Johannesburg, and VIP variants, detailing anaerobic, anoxic, and aerobic phases and design parameters.

Learn nutrient removal with bio discs, SAF and IFAS, MBBR, and SBR processes, covering bio disc stages, nitrification and denitrification, phosphorus precipitation, anaerobic/anoxic cycling, and external substrate use.

Learn how tertiary treatment removes dissolved mineral salts after secondary treatment using ion exchange, reverse osmosis, electrodialysis, or nanofiltration, and review disinfection options such as chlorine, ozone, and ultraviolet radiation.

Classify and optimize treated sludge management from pretreatment to final disposal, detailing primary, secondary, and tertiary sludge, stabilization and moisture reduction, and common physical, chemical, biological, and thermal processes.

Explain how sludge thickening concentrates primary and secondary sludge using gravity and flotation, using thickeners and clarifiers to reduce moisture, achieve 6–10% solids, and manage loading and odors.

Learn the three DAF configurations—full flow, split flow, and recirculating flotation—and compare energy use, tank size, and removal efficiency in water treatment.

Stabilize sludge via high-load anaerobic digestion, reducing biodegradable organics by over 50%. Maintain mesophilic temperatures around 35°C in a completely mixed digester to maximize methane production and volatile solids reduction.

Analyze aerobic digestion of thickened sludge in continuously aerated digesters and chemical stabilization with lime to raise pH and deactivate pathogens.

Explore chemical conditioning and drying beds for dewatering sludge, selecting coagulants and flocculants (cationic for organic matter, anionic for mineral matter), and assess advantages, disadvantages, and design considerations.

Compare mechanical dewatering methods for sludge, including filter presses, belt filters, centrifugal filters, and vacuum filters, covering operation, chemical conditioning, dryness ranges, and advantages and disadvantages.

Explore aerobic composting of digested sludge with sawdust to balance the carbon-nitrogen ratio, reach 60–65°C for pathogen purification, and produce high-quality compost through aerated piles and vermicomposting.

Explore how various treatment schemes combine pretreatment, primary and secondary processes, disinfection, and sludge handling to remove organic matter, nitrogen, and phosphorus in wastewater.

Explore low-cost stabilization ponds for urban wastewater treatment, including anaerobic, facultative, and maturation ponds, their aerobic and anaerobic zones, and the roles of algae, zooplankton, and macrophytes.

Understand anaerobic ponds that reduce solids and bod5 via hydrolytic, acidogenic, and methanogenic bacteria, with typical short retention times and sediment management to control odors.

Explain how facultative ponds combine upper aerobic and lower anaerobic zones with maturation ponds to achieve 80–95% bod5 removal in 10–14 days, guided by algae, oxygen dynamics, and sediment management.

Configure stabilization pond systems by sequencing anaerobic, facultative, and maturation ponds, or replace anaerobic with aerated ponds, ensuring gradual microbial development and odor control during startup.

Use aerated ponds to provide dissolved oxygen and replace anaerobic ponds. They enable longer residence times for higher flow or organic load and may involve grit chambers.

Learn green filters and rapid infiltration, where soil, crops, and microorganisms purify pretreated wastewater through depuration and macrophyte depuration, using surface flow with land-area considerations.

Explore low-cost constructed wetlands for potable, wastewater, and industrial treatment, using surface and subsurface flow systems with macrophytes and floating plants to purify water through filtration, adsorption, and microbial degradation.

Explore peat beds for urban wastewater treatment, where a 40 to 50 cm peat layer filters and adsorbs pollutants from percolating water, followed by biological oxidation by peat-adhering microbes.

Assess industrial wastewater treatment across conventional processes such as coagulation, flocculation, flotation, and filtration, plus advanced oxidation with hydroxyl radicals to meet discharge regulations.

Conduct accredited laboratory sampling and hourly gauging to determine daily flow, pollutant averages, and four elements for designing a compliant wastewater treatment plant, including physicochemical analysis and regulatory considerations.

Explore coagulation, flocculation, sedimentation, filtration, and flotation for industrial wastewater treatment, including lamella clarifiers, compact plants, and rapid and slow mixing with polymers and dewatering options.

Explore aerobic activated sludge and its reactor variants for treating wastewater. Learn how biodegradability index thresholds guide the selection of biological processes.

Explore trickling filters, bio disks, SAF and IFAS, MBR, SBR, UASB, and other anaerobic–aerobic processes, highlighting attached biomass, detachment, and the role of secondary settlers.

Explore the fundamentals of oxidation-reduction in water treatment, including redox potential and oxidants such as chlorine, hydrogen peroxide, and ozone, and hydroxyl radical chemistry.

Explore oxidation and reduction strategies for sulfide and cyanide removal, hexavalent chromium reduction, and chemical precipitation in wastewater, highlighting pH control, aeration, catalysts, and treatment sequencing.

Stripping volatile and semi-volatile compounds from wastewater removes ammonia, hydrogen sulfide, pesticides, polychlorinated biphenyls. Employ membrane processes from microfiltration to reverse osmosis, requiring pretreatment to prevent clogging.

Electrodialysis uses direct current to move cations and anions through ion exchange membranes, removing inorganic dissolved solids from wastewater with activated carbon pretreatment and polarity reversal.

Master electrocoagulation for wastewater treatment using sacrificial aluminum or iron anodes and a cathode to form aluminum hydroxide flocs and remove contaminants.

Advanced oxidation processes generate hydroxyl radicals to degrade pollutants and boost biodegradability for biological treatment. They are costly and classified into homogeneous and heterogeneous systems, with various oxidant combinations.

Explore advanced oxidation by ozonation in alkaline media, including ozone–peroxide and UV–peroxide processes, with lab-determined pH and dose, diffusion methods, and safety and cost considerations.

Explore heterogeneous photocatalysis with ultraviolet light and titanium dioxide (anatase vs rutile), and Fenton- and electrochemical-based processes, guided by lab-tested dosages and pH control for dye and organics removal.