Aimed at the pollution characteristics of high salinity and high concentration organic wastewater in inorganic fine chemical industry such as complex composition and difficult degradation this study explorates and practises valuable components recovery and water resource reuse technology in the production process of nickel cobalt battery materials in inorganic fine chemical industry. The results show the followings:the oil removal rate from the wastewater can reach 99%; the anhydrous sodium sulfate obtained from resource recovery can meet the class III standard of GB/T 6009-2014 (Na₂SO₄ content >92%); the TOC content of wastewater after treatment is ≤ 0.05%, and the water reuse rate is more than 85%. When the evaporation residue is mixed with fly ash and other auxiliary materials, ceramsite can be prepared. So all of them can be recycled. The treatment cost per ton of water in the whole process is reduced from 220 yuan to less than 180 yuan, which has significant economic and environmental benefits.

fine chemical industry  /  high salt organic wastewater  /  solidification