低成本利用工业飞灰废物处理生活污水

IF 0.4 Q4 ENVIRONMENTAL SCIENCES

Asian Journal of Water, Environment and Pollution Pub Date : 2023-03-29 DOI:10.3233/ajw230021

Piyush Gupta, P. Gupta

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引用次数: 0

摘要

采用粉煤灰、水玻璃、木屑、硅灰和水处理生活污水，研制了一种经济有效的多孔粉煤灰过滤蜡烛(FFC)。制备了4种不同尺寸的FFC试件(10、20、30、40 mm)。研究了处理前后生活废水的浊度、总悬浮物(TSS)、溶解氧(DO)、总溶解固形物(TDS)、pH等参数。试验结果表明:浊度由7 NTU降至5.9 NTU, TSS由300 mg/L降至218 mg/L, TDS由400 mg/L降至302 mg/L, pH由10.6降至7.9,BOD由9.5降至7.9,DO由8.9降至7.7。FFC的孔隙率为24.55 ~ 27.26%，抗压强度为1.5 ~ 2.3 MPa，流量为180 ~ 290 ml/h。用FFC进行过滤试验，效果良好，过滤效率达0.92 %。总体结果表明，推荐30 mm床层厚度的FFC进行有效的废水处理。因此，尝试引入一种利用工业飞灰废物处理生活污水的新技术。

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Cost-Effective Utilisation of Industrial Fly Ash Waste in Treatment of Domestic Wastewater

In the present research an economically effective porous fly ash-based filter candle (FFC) was developed for the treatment of domestic wastewater using fly ash, sodium silicate, wood dust, silica fume and water. The four testing specimens of FFC having different sizes (10, 20, 30, and 40 mm) were prepared. The parameters such as turbidity, total suspended solids (TSS), dissolved oxygen (DO), total dissolved solids (TDS), and pH of domestic wastewater were studied before and after treatment. The test results showed that there is a decrease in values of turbidity from 7 to 5.9 NTU, TSS from 300 to 218 mg/L, TDS from 400 to 302 mg/L, pH from 10.6 to 7.9, and BOD from 9.5 to 7.9 while DO values decreased in the range of 8.9 to 7.7. The observed porosity, compressive strength, and flow rate of FFC fall in the range of 24.55-27.26 %, 1.5-2.3 MPa, and 180-290 ml/h, respectively. The filtration tests using FFC exhibited good performance with >92 % filtration efficiency. Overall results have shown that FFC having a 30 mm bed thickness is recommendable for effective wastewater treatment. Thus, an attempt has been made to introduce a novel technology for domestic wastewater treatment using industrial fly ash waste.

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来源期刊

Asian Journal of Water, Environment and Pollution ENVIRONMENTAL SCIENCES-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Asia, as a whole region, faces severe stress on water availability, primarily due to high population density. Many regions of the continent face severe problems of water pollution on local as well as regional scale and these have to be tackled with a pan-Asian approach. However, the available literature on the subject is generally based on research done in Europe and North America. Therefore, there is an urgent and strong need for an Asian journal with its focus on the region and wherein the region specific problems are addressed in an intelligent manner. In Asia, besides water, there are several other issues related to environment, such as; global warming and its impact; intense land/use and shifting pattern of agriculture; issues related to fertilizer applications and pesticide residues in soil and water; and solid and liquid waste management particularly in industrial and urban areas. Asia is also a region with intense mining activities whereby serious environmental problems related to land/use, loss of top soil, water pollution and acid mine drainage are faced by various communities. Essentially, Asians are confronted with environmental problems on many fronts. Many pressing issues in the region interlink various aspects of environmental problems faced by population in this densely habited region in the world. Pollution is one such serious issue for many countries since there are many transnational water bodies that spread the pollutants across the entire region. Water, environment and pollution together constitute a three axial problem that all concerned people in the region would like to focus on.