Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (4): 152-158.doi: 10.19964/j.issn.1006-4990.2021-0377
• Environment·Health·Safety • Previous Articles Next Articles
ZHOU Weifeng1,2(),CHI Yongzhi1,2(
),LI Kaixiong1,2,TIAN Sufeng1,2,LIU Muzhi3
Received:
2021-06-09
Online:
2022-04-10
Published:
2022-04-18
Contact:
CHI Yongzhi
E-mail:351370124@qq.com;23733403@126.com
CLC Number:
ZHOU Weifeng,CHI Yongzhi,LI Kaixiong,TIAN Sufeng,LIU Muzhi. Study on removal of salts from MVR condensate wastewater in the hydrometallurgical industry by ion exchange method[J]. Inorganic Chemicals Industry, 2022, 54(4): 152-158.
Table 1
Main quality indicators of water"
样品 | pH | 电导率/(μS·cm-1) | TDS/(mg·L-1) | ρ(Na+)/(mg·L-1) | ρ(Cl-)/(mg·L-1) | ρ(SO42-)/(mg·L-1) | ρ(NH4+)/(mg·L-1) |
---|---|---|---|---|---|---|---|
NaCl冷凝废水 | 7.60 | 225.81±32.6 | 129.6±8.8 | 50.32±31.27 | 32.12±22.3 | 8.55±2.55 | 8.13±0.24 |
Na2SO4冷凝废水 | 7.19 | 175.46±23.56 | 85.1±9.1 | 38.45±29.33 | 21.67±5.76 | 35.23±11.21 | 1.61±0.81 |
Table 2
Basic properties of two mixed bed resins"
树脂名称 | 功能基团 | 出厂离子形式 | 全交换容量/ (mmol·g-1) | 湿表观密度/ (g·mL-1) | 有效粒径/ mm | w(H2O)/ % | 再生次数 |
---|---|---|---|---|---|---|---|
DDC600阳树脂 | —SO3H | Na+ | 4.36 | 0.83 | 0.63 | 40~45 | ≥2 000 |
DDA500阴树脂 | —N+(CH3)3 | Cl- | 3.49 | 0.67~0.73 | 0.55 | 40~45 | ≥2 000 |
001×7MB阳树脂 | —SO3H | Na+ | 4.50 | 0.78~0.88 | 0.73 | 45~50 | ≥800 |
201×7MB阴树脂 | —N+(CH3)3 | Cl- | 3.50 | 0.67~0.75 | 0.65 | 42~48 | ≥800 |
Table 3
Fitting parameters of Na+ penetration curve by Thomas model for two mixed beds treating two types of condensate wastewater separately"
混床 类型 | 冷凝 废水 类型 | 速率常数 KT /(mL· min-1·mg-1) | 理论吸 附量qe.C / (mg·mL-1) | 实际吸 附量qe.E / (mg·mL-1) | 吸附量 偏差①/ % | 相关 系数R2 |
---|---|---|---|---|---|---|
DDC600/ DDA500 | NaCl | 0.025 | 7.746 | 7.450 | 3.97 | 0.978 0 |
Na2SO4 | 0.028 | 8.600 | 8.222 | 4.60 | 0.970 4 | |
001×7MB/ 201×7MB | NaCl | 0.028 2 | 6.143 | 5.747 | 6.89 | 0.965 4 |
Na2SO4 | 0.032 | 7.731 | 7.261 | 6.47 | 0.981 0 |
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