A Long-Term Win in Wastewater Management

Back in 2014, a large serviced apartment hotel in Bangkok—with more than 300 rooms and over 200 cubic meters of daily wastewater—set out to improve the performance of its wastewater treatment plant.

The challenge was clear: reduce key pollutants in the effluent while maintaining reliable operations.

Month after month, the treatment program was applied and monitored. The results spoke for themselves. Biological Oxygen Demand (BOD) dropped from 105 to just 2 mg/L. Total Suspended Solids (TSS) fell from 48 to 3.6 mg/L. Odor-related indicators were also significantly reduced.

What started as a wastewater treatment challenge became a case study in consistency. The biggest takeaway wasn’t a single month’s improvement—it was the sustained progress achieved over more than a year.

For a property serving hundreds of residents and guests every day, cleaner discharge meant better environmental performance, improved compliance, and confidence that the system was working as intended.

Sometimes success isn’t about a breakthrough. It’s about steady improvement that compounds over time.