无氧处理的酒厂废水使用试点规模的水平地下流构建湿地系统进行后处理
Ermias Alayu1,2, Seyoum Leta3
1Center for Environmental Science, College of Natural and Computational Science, Addis Ababa University, Arat kilo campus, Post - Graduate building, 6th floor, P.O.Box 1176, Addis Ababa, Ethiopia.
Bioresources and bioprocessing
|April 23, 2024
概括
这项研究表明,两阶段建造的湿地有效地抛光无氧消化废水,显著消除化学氧气需求和营养素等污染物. 综合系统符合排放标准,除了,突出其可持续废水处理的潜力.
科学领域:
- 环境工程 环境工程
- 废水处理技术 废水处理技术
- 生态工程生态工程生态工程
背景情况:
- 无氧消化提供了可持续的废水处理与生物气生产,但留下废水残留污染物.
- 后处理对于满足环境排放标准和保护水体至关重要.
- 建筑湿地 (CWs) 被探索为无氧过程的废水的三级处理.
研究的目的:
- 评估酒厂废水的两级水平地下流构造湿地 (HSSFCW) 的三级处理潜力.
- 评估关键污染物的去除,包括总悬浮固体 (TSS),化学氧气需求 (COD) 和营养素 (TN,NH4-N,TP,PO43-).
- 确定宏生物生物质和CW系统中营养积累之间的相关性.
主要方法:
- 试点规模的两级HSSFCW与上游无氧污泥毯 (UASB) 反应堆的整合.
- 在顺序的CW细胞中培养Cyperus alternifolius和Typha latifolia.
- 监测污染物去除效率,确定巨型植物生物质和营养积累.
主要成果:
- 第一个CW细胞 (Cyperus alternifolius) 实现了显著的TSS (68.5%),COD (74.2%),TN (55.7%),NH4-N (68.6%),TP (41.1%) 和PO43- (48.1%) 的去除.
- 第二个CW细胞 (Typha latifolia) 进一步提高了去除效率,达到TSS的89%,COD的92%,TN的83.6%,NH4-N的92.9%,TP的74.4%,PO43-的79.5%.
- 在巨生物质生物量和营养积累 (TN和TP) 之间观察到强烈的正相关性,累计营养摄入量为1290 gTNm-2和708.7 gTPm-2.
结论:
- 两个阶段的HSSFCW系统有效地作为UASB处理的酒厂废水的三级处理,显著减少碳和的负载.
- 综合系统通常符合允许的排放标准,尽管去除需要进一步优化.
- 巨菌的生长在营养物质的去除中起着至关重要的作用,这表明了该系统对可持续废水管理的潜力.
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