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| 一种新型微生物絮凝剂的制备及对Cu 2+ 去除性能的探究 |
| Preparation of A Novel Microbial Flocculant and Its Removal of Cu 2+ |
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| DOI： |
| 中文关键词: 铜 脱水污泥 超声波破碎 微生物絮凝剂 去除性能 |
| 英文关键词: Copper Dewatered sludge Ultrasonic crushing Microbial flocculant Removal performance |
| 基金项目:国家自然科学基金资助项目(E08042) |
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| 中文摘要: |
| 以城市污水处理厂的脱水污泥为原料，通过超声波细胞破碎制备微生物絮凝剂。采用控制变量法考察污泥浓度、超声波破碎时间对絮凝剂絮凝效果的影响，并探究絮凝液的投加量、pH值、温度、振荡时间、振荡频率、共存金属等因素对5 mg/L Cu2+模拟废水的去除效果，分析了微生物絮凝剂去除Cu2+的作用机理。结果表明：当污泥质量浓度为100 g/L，超声波破碎时间15 min时，絮凝剂的絮凝效果最好；当pH值为65，温度50 ℃，絮凝液投加量40 mL，振荡时间1 min，振荡频率200 r/min时去除效果最佳。 |
| 英文摘要: |
| Microbial flocculant was prepared from dewatered sludge from municipal sewage treatment plant by ultrasonic cell crushing. The effect of sludge concentration and ultrasonic crushing time on flocculation was studied by using control variable method， and the effect of flocculant dosage， pH value， temperature， oscillation time， oscillation frequency， coexistence metal and other factors on the removal of 5 mg/L Cu2+ simulated wastewater were studied， the mechanism of Cu2+ removal by microbial flocculant was discussed. The results showed that the flocculant had the best flocculation effect when the sludge concentration was 100 g/L and the ultrasonic crushing time was 15 min. The removal efficiency was the best when the pH value was 6.5， the temperature was 50 ℃， the flocculant dosage was 40 mL， the oscillation time was 1 min， and the oscillation frequency was 200 r/min. |
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