From 1989 to 2026: How Blue Collar’s Vertical Mixer and Water Pump Became Standard Fit for 50 Countries’ Sewage Plants

NANJING, China – The first submersible mixer Blue Collar shipped in 1990 is reportedly still running in a Jiangsu plant. Thirty-six years later, the company now ships over 5,000 units annually to five continents.

Nanjing Blue Collar Environmental Technology Co., Ltd. never intended to be famous. It just kept solving the same problem: keeping solids suspended in water without breaking down. That focus gave birth to its permanent magnet submersible mixer, which cuts energy use by nearly one third compared to conventional models.

Today, the company’s integrated sewage treatment unit combines mixing, aeration, and pumping into one skid. The aeration system delivers 2.5 kgO₂ per kWh. The vertical mixer eliminates dead zones in oxidation ditches. The water pump handles solids up to 50mm without clogging.

Four utility model patents protect key innovations: a new reducer, an adjustable mounting bracket, and a folded rear blade sealing structure. CE certified. RoHS compliant. Two-year warranty.

Over 50 countries trust Blue Collar’s sewage treatment equipment, from the United States and Germany to Brazil and India.

For inquiries, visit www.llwatertreatment.com.