How to Size a Sewage Treatment Plant for a Hotel or Resort

Hotels and resorts are among the hardest sewage treatment applications: flows swing with occupancy, kitchens add fats and grease, and the plant often sits close to guest areas where odor is unacceptable. Many properties are also off the municipal sewer and want to reuse treated water for landscape irrigation. Here is how to size a plant correctly.

Step 1: Estimate the design flow

Start from rooms and occupancy. A common planning figure is 150 to 300 litres per guest per day, plus restaurant, laundry and spa loads. Always size for peak occupancy and add a buffer for events, then check the daily peaking factor so the plant handles morning and evening surges.

Step 2: Characterize the load

Hospitality wastewater is high in organics (BOD/COD) and, from kitchens, fats, oils and grease (FOG). A DAF unit or grease interceptor upstream protects the biological stage from FOG and keeps performance stable.

Step 3: Select the process

For straightforward discharge, a packaged MBBR plant is reliable and low-maintenance. If you want to reuse treated water for irrigation, an MBR plant delivers the clear, low-turbidity effluent that reuse standards require. Both can be supplied as compact packaged or containerized units that install quickly with minimal civil work.

Step 4: Confirm the discharge or reuse standard

The target standard drives the design. Confirm local discharge limits, or the reuse class if water will irrigate landscaping, before finalizing the process and any tertiary disinfection.

Tell us your room count, occupancy and whether you want water reuse, and we will size a system for you. Get a free quote.