Further studies on the weak electrolyte ion exchange resin desalination process (Desal Process)

✍ Scribed by Robert Kunin

• Publisher: Elsevier Science
• Year: 1968
• Tongue: English
• Weight: 650 KB
• Volume: 4
• Category: Article
• ISSN: 0011-9164
• DOI: 10.1016/s0011-9164(00)84035-7

✦ Synopsis

Studies on the bw?3k clectrolytc ion cxcbangc resin daaiination process, DESAL m wcrc continual in conjunction with field tri315. The r:udics ~zrc conducted on brackish waters, 3cid mine drainage waras emanating from coal mines, and szwagc dflucnts. TLu DESAL pta;tss inu&es tltc following steps: (l) CarbGnation -a~nversion of wrak bare anion cxdt3agc resin to bicarbonate tait. Of Afkafiiion -anion exctrangc cooversion of salinity to atkaiinity. ~3) D4lrrttization -c&ion cxchangc removal ofc3tMrrr and txpulsien of liberated CO,. Variatiollt in the dcsaiination prrxr~s have baa dcvciopcd that permit one te t&e adv3nt3ge of varying water armpositions and specific water quality requirements. These innovatim include a uwbinarion of the first stage of the DESAL Process (3lMitation) with cold-Iimc s&'&sting. Tbc reuits indirate that one may desalinate economically bmckish waters, magc efftuents. and acid mine daaiw wdtcrs with a weak ek~rolytc ion exchange r&n tilination process using. at hi& cf6&&es. such cheap regcncrants as NHJ. NaOH. N32CO3, or CaO for the anion cxetlangc resin and H-$0&. SOa. or CO2 for the cation cxcbange resin. A p!3xX instaliation has been operating in the U.S. sucessfttlfy for the fest nine months at rated cRp3city dud without difficulty.