A method for combined treatment of high salt water
A high-salinity and salinity technology, applied in the field of environmental protection and comprehensive utilization of resources, can solve the problems of weak dissociation of weakly acidic resins and weakly basic resins, hazardous waste liquid discharge, and high operational hazards, and achieves low cost, The effect of reducing salinity and reducing the risk factor
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[0017] Firstly, the high salt water in the industrial park is detected, the pH is 7.0-10.0, the conductivity is 3000-10000μS / cm, the total hardness is 1000-3000mg / L, the COD is 20-200mg / L, and the mass fraction of salt ions is 5%. The concentrations of major ions in high brine are shown in Table 1.
[0018] Table 1
[0019] pH
8.6
NH 3 -N
0.382
Ca
4.83
K
22.5
Na
686
Mg
47.9
Cl -
1116
883
CO 3 2-
1.0
HCO 3 -
11.4
full salt
2752
[0020] Pass the above-mentioned industrial wastewater through the booster pump, and then pre-filter the raw water with an ultrafiltration membrane; the filtered wastewater first flows through a strong acid cation exchanger, which is composed of an ion exchange column and related pipeline valves. Fill the ion exchange resin, and regularly check the hardness to be regenerated with salt water; then pass through the inter...
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