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High Strength Wastewater: Parameters and Source Characteristics Pretreatment Technologies Workshop

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Potential sources Commercial Institutional Residential

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Commercial sources: Food Service Food Stand Restaurant Grocery store with food service Convenience store with food service

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Rough prescriptive codes Square footage, # employees Hours of operation # Meals served Location

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Factors affecting wastewater strength of food service facilities

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Cuisine: what do they serve? Ethnic differences Cooking oils Self serve drinks Ice cream machines Alcoholic beverages Coffee shops

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Serving Mode Take out/carry out Salad bar Buffet Banquet

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Management procedures Dishes Dishwasher Defrosting method Garbage disposal

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Management Laundry machine Water source Pressure Water treatment Floor cleaning Caustic cleaners Drains?

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Other commercial facilities Inn/Lodge, B and B Golf courses Camping Breweries, wineries

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Other commercial facilities Car washes Particulates Sediment trap? Road tar, petroleum waste Oil/grease trap? Soaps and wax

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Other commercial facilities Beauty shops/spas Chemicals used Waxing Mud baths Visitor center

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Other commercial facilities Photography labs Chemicals Heavy metals Solvents

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Other commercial facilities Laundries and dry cleaners Lint Particulates Dry cleaning agents Acidic and caustic compounds Soaps Dyes

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Other commercial facilities Meat processing facilities/slaugh terhouses Blood Hair Cleaning agents Caustic, acidic or both FOGs

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Other commercial facilities Food processing facilities FOGs Particulates Cleaners

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Grocery stores Services Meat market Bakery Food service

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Mini malls A mix of sources How many? Check characteristics of each one They will change Separate septic tank for each one

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Institutional sources Schools Students, faculty What level Facilities: cafeteria, showers, labs Day Care Centers Age - No. of children in diapers Churches Members Other services

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Institutional sources Hospitals, clinics Nursing homes

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Institutional sources Veterinary facilities Funeral homes

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Residential sources and wastewater strength Parameters that influence strength

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Occupancy Owner occupied or rental Year round or seasonal Demographics

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Other contributions to high strength in residential settings Additives Garbage disposal FOGs

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PPCPs Common causes of high strength in residential settings Chemotherapy, hormones, diabetic drugs Cleaning products Personal care products Hobbies/home businesses

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Checklists Designed for troubleshooting Also helpful for design review

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Questions?