Technical Knowledge
Flocculating seawater waste slurry in practice
2026-06-20
Waste slurry made with seawater sits near 35‰ salinity. Ordinary anionic flocculants lose their charge sites and fail, while fine, stably charged particles simply will not settle.
Our working flow runs in three steps: coarse pre-settling in the pond with PAM-POOL (50–100 g/m³); salt-tolerant FLOC-P (50–100 g/m³) to bridge fines into large flocs; then caustic soda to adjust pH before filter pressing — dry cake out, clear water back to dust control and make-up.
The system ran steadily at 35‰ and cut hauled-away waste 60%. The lesson: salt-tolerant flocculant design and pre-settling must work together — skip either and chemical consumption soars.
