Knowledge

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

An ordinary sedimentation tank removes 40–70% of suspended solids at 1.5–2.5 hours retention time. An inclined tube settler removes over 90% at 30 min

Domestic sewage is easy. Papermaking wastewater is hard. Mix them, and the combined stream becomes harder to treat than either alone — biodegradable f

Your tube settler removes suspended solids. But which sizes does it actually capture — and which ones slip through no matter how well the tank is desi

A wastewater treatment plant in Xilinhot was designed for municipal sewage. What arrived was slaughterhouse waste — blood, grease, manure, and bone re

Summer 1993. Peak water demand. A Jiangsu waterworks empties its sedimentation tank for a routine valve repair — and the inclined tubes suddenly colla

Sedimentation separation has long been a practical workhorse of water treatment. Inclined tubes multiply settling area — but when inlet flow distribut

After 25 years of service — and one catastrophic flood in 2020 — the PVC inclined plates in a waterworks' flotation-sedimentation tank had reached the