... ) ≤ 8-10 4, industrial resin layer height: m 1.0-3.0 5, regeneration concentration:% NaCl ... 2; 2-4 6, regeneration dosage: kg / m (at 100%) NaCl (Industry) 75-150 HCl ... 75-150 7, the regeneration flow rate: m / h 4-6 8, then contact time: ... :40-80 9, is washing flow rate: m / h :10-20 10, washing time: minute ... : 40 11, running velocity: m / h :10-40 12, the working exchange capacity ...