将乳制品废水作为基质,用于水平流人工湿地中煤矿排水的生物修复。

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Prakhar Tripathi, Saswati Chakraborty
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引用次数: 0

摘要

煤矿排水(CMD)因其体积大、pH 值低、含有毒金属和缺乏可生物降解的有机物而对环境构成威胁。本研究旨在利用乳制品废水作为有机源,在水平次表层流建造的湿地(CW)中处理煤矿排水。CW 中种植了香蒲(Typha angustifolia)。合成 CMD 的特征为(除 pH 值外,所有单位均为 mg/L):pH 值 1.9;铁:100;SO42-:1,000, Mn: 6, Zn:5、Co:1、Ni:1 和 Cr:1:1.CMD 与合成乳制品废水(pH:5.05,COD:2,700 mg/L,BOD:1,600 mg/L)按 3:1 的比例混合。产生的 CaCO3 碱度为 120-190 毫克/升,出水 pH 值从 2.2 提高到 6.6。金属以金属硫化物或氢氧化物的形式沉淀。由于几种金属的协同毒性,硫酸盐的去除受到阻碍。除锰之外,所有其他出水参数都在内陆地表水排放限值之内。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Application of dairy wastewater as substrate for bioremediation of coal mine drainage in planted horizontal flow constructed wetland.

Coal mine drainage (CMD) is an environmental threat due to its high volume, low pH, presence of toxic metals, and absence of biodegradable organics. The present study aims to treat CMD in a horizontal sub-surface flow constructed wetland (CW) using dairy wastewater as an organic source. CW was planted with Typha angustifolia. Characteristics of synthetic CMD were (except pH, all unit mg/L) pH 1.9; Fe: 100, SO42-: 1,000, Mn: 6, Zn: 5, Co: 1, Ni: 1, and Cr: 1. CMD was mixed with synthetic dairy wastewater (pH: 5.05, COD: 2,700 mg/L, BOD: 1,600 mg/L) in the ratio of 3:1. Alkalinity of 120-190 mg/L CaCO3 was generated and effluent pH improved from 2.2 to 6.6. Metals precipitated as metal sulfide or hydroxide. Sulfate removal was hindered due to the synergistic toxicity of several metals. Except for Mn, all other effluent parameters were within the discharge limit for disposal in inland surface water.

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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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