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| Study on the treatment process of wastewater with high concentrations of salt and organic |
| Bai Yanli1, Zhang Jing1, Liu Guoqi1, Zhang Zonglei2, Wang Hongmei1, Ren Zhiyong1,#br#
Li Huan1, Zhi Huanhuan1, Chen Fengjuan3 |
| 1. Lanzhou Jinchuan Precious Metal Materials Corporation Ltd. , Lanzhou 730101, China; 2. Gansu Jingpu Detection Technology Corporation Ltd. , Lanzhou 730101, China; 3. Lanzhou University, Lanzhou 730000, China |
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Abstract The waste water containing ultra-high concentration NO3- and ultra-high BOD and COD( their value > 2 × 105 mg/L) was produced in the production of precious metal homogeneous catalysts including rhodium trichloride ( triphenyl phosphine ), palladium dipalladium tribenzyl acetone, palladium allyl chloride dimer, etc. and in the recovery process of precious metals by Lanzhou Jinchuan Precious Metal Material Corporation, Ltd. The physical sedimentation method and chemical decomposition method were combined to treat the wastewater. The experimental results showed that the treated wastewater could be discharged with COD ≤ 120 mg/L and BOD ≤ 150 mg/L in accordance with the standards.
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