Knowledge

High-specific-surface HDPE MBBR media (800 and 650 m²/m³) solves Vietnam textile and municipal sewage upgrade challenges. Real Ho Chi Minh textile fac

This study systematically investigated how fill rate, reflux ratio, and HRT affect the startup of A/MBBR reactors treating rural domestic wastewater a

The plates in a lamella settler don't fail because the wastewater is too aggressive. They fail because of where they sit relative to the waterline. In

In a high-density indoor tilapia RAS at 115 fish per cubic meter, ammonia doesn't rise gradually — it spikes. One missed feeding adjustment, one under

Your COD removal is holding at 88%. Your BOD is fine. But the clarifier is turning into a brown cloud, and effluent suspended solids are climbing past

Upgrading a municipal wastewater plant from Class 1B to Class 1A is not a paperwork exercise — it's a hydraulic, biological, and financial problem rol

Coal washing wastewater punishes conventional sedimentation. Fine coal dust and clay particles — 500 to 700 mg/L of suspended solids — stay in suspens

Aeration eats 50% of a wastewater treatment plant's electricity — and in many older plants, half of that energy is wasted. Coarse bubble diffusers tha

At 3 AM in a high-density shrimp pond, dissolved oxygen can crash from 6.0 to 3.5 mg/L in under an hour — and with it, the survival rate of an entire

In high-density shrimp farming, ammonia is the invisible killer. At 35 mg/L NH₃-N in the influent and stocking densities of 250–300 shrimp per square

Space is tight. Discharge limits are tightening. Traditional activated sludge — reliable for decades — can no longer deliver the effluent quality regu

When China's GB5749-2006 standard cut the turbidity limit from 3 NTU to 1 NTU, a 1980s-vintage 40,000 m³/d waterworks in Huizhou had a problem. Its in