JIANGJin-feng,CHEN Wei-yu,XIN Hao,et al.Treatment Efficiency and Engineering Application of Macroporous Resin for Perchlorate Wastewater[J].China Water & Wastewater,2025,41(23):99-105.
Treatment Efficiency and Engineering Application of Macroporous Resin for Perchlorate Wastewater
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第23期
Page:
99-105
Column:
Date of publication:
2025-12-01
- Keywords:
- fireworks wastewater; perchlorate; D201 resin; dynamic adsorption
- Abstract:
- Addressing the pollution issue of perchlorate (ClO4-) wastewater in the fireworks industry, the removal efficiency and engineering applicability of D201 strongly basic anion exchange resin for ClO4- were investigated. The effects of adsorption time, initial concentration, temperature, pH and coexisting anions on adsorption behavior were examined through static adsorption experiments. The adsorption mechanism was explored using kinetic, isothermal, and thermodynamic models. Dynamic adsorption column experiments were performed using actual wastewater from a fireworks factory, to analyze the resin’s breakthrough characteristics and regeneration performance, and continuous flow pilot-scale tests were conducted to verify engineering performance. The results showed that the maximum adsorption capacity of ClO4- was 262.7 mg/g at 25 ℃ under static conditions with a resin dosage of 0.4 g/L, with high adsorption performance maintained at pH 5-11.The inhibitory effect of coexisting anions followed the order of SO42-> NO3-> Br-> Cl-. In the dynamic adsorption column experiment, the dynamic saturated adsorption capacity was 176.4 mg/g and a regeneration efficiency of 90.12% was achieved using 75.68 BV of 10% NaCl solution.The productive test demonstrated that the resin tank could operate continuously for 231.8 BV with a saturated adsorption capacity of 175.2 mg/g, while the effluent quality met discharge standards.This study indicates that the D201 resin exhibits efficient and stable removal performance for ClO4- in fireworks wastewater, along with good regeneration performance.
Last Update:
2025-12-01