评估和优化改进的废物活性污泥减少在线性基硫酸盐结合短时间有氧消化系统的评估和优化
Yuxin Zhu1, Xiaoxuan Hao2, Chenhui Wang3
1College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
Journal of environmental management
|February 11, 2025
概括
线性基硫酸盐 (LAS) 在短时间有氧消化 (STAD) 中有效减少废弃活性污泥 (WAS). 使用响应表面方法 (RSM) 的优化确定了最大限度地减少污泥的关键参数.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 废水处理 废水处理
背景情况:
- 减少废物活性污泥 (WAS) 对可持续的废水处理至关重要.
- 线性基硫酸盐 (LAS) 在增强污泥减少过程方面表现有前途.
- 短时间有氧消化 (STAD) 是污泥处理的一种有效方法.
研究的目的:
- 评估和优化使用 LAS 与 STAD 结合使用 WAS 减少的操作参数.
- 为了确定 LAS 剂量,初始 pH 和溶解氧 (DO) 对 VSS 和 LAS 移除的影响.
- 应用响应表面方法 (RSM) 来预测最佳条件.
主要方法:
- 基于中央复合设计 (CCD) 的响应表面方法 (RSM).
- 系统变化LAS剂量,初始pH和DO度.
- 对参数显著性的差异分析 (ANOVA) 和回归建模.
主要成果:
- LAS剂量是影响WAS减少的最重要因素.
- 最初的pH和DO度对VSS和LAS分别的去除至关重要.
- 在优化的条件下 (0.10 g/g TSS LAS,pH 7.38,2.48 mg/L DO) 产生了41.7%的VSS和98.6%的LAS去除.
结论:
- 在 LAS-合 STAD 系统中,RSM 准确地预测了 WAS 减少.
- 优化的参数显著提高了污泥减少效率.
- 该研究为改善WAS管理提供了一个强大的框架.
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