Bioaugmentation of floating treatment wetlands for the remediation of textile effluent

2018 ◽  
Vol 33 (1) ◽  
pp. 124-134 ◽  
Author(s):  
Nain Tara ◽  
Mazhar Iqbal ◽  
Qaisar Mahmood Khan ◽  
Muhammad Afzal
Keyword(s):  
Treatment Wetlands ◽  
Textile Effluent ◽  
Floating Treatment Wetlands

scholarly journals Implementation of Floating Treatment Wetlands for Textile Wastewater Management: A Review

2020 ◽  
Vol 12 (14) ◽  
pp. 5801
Author(s):  
Fan Wei ◽  
Munazzam Jawad Shahid ◽  
Ghalia S. H. Alnusairi ◽  
Muhammad Afzal ◽  
Aziz Khan ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Textile Wastewater ◽  
Pollutant Removal ◽  
Treatment Wetlands ◽  
Textile Effluent ◽  
Bacterial Strains ◽  
Incomplete Removal ◽  
Essential Components ◽  
Floating Treatment Wetlands ◽  
Selection Of

The textile industry is one of the most chemically intensive industries, and its wastewater is comprised of harmful dyes, pigments, dissolved/suspended solids, and heavy metals. The treatment of textile wastewater has become a necessary task before discharge into the environment. The textile effluent can be treated by conventional methods, however, the limitations of these techniques are high cost, incomplete removal, and production of concentrated sludge. This review illustrates recent knowledge about the application of floating treatment wetlands (FTWs) for remediation of textile wastewater. The FTWs system is a potential alternative technology for textile wastewater treatment. FTWs efficiently removed the dyes, pigments, organic matter, nutrients, heavy metals, and other pollutants from the textile effluent. Plants and bacteria are essential components of FTWs, which contribute to the pollutant removal process through their physical effects and metabolic process. Plants species with extensive roots structure and large biomass are recommended for vegetation on floating mats. The pollutant removal efficiency can be enhanced by the right selection of plants, managing plant coverage, improving aeration, and inoculation by specific bacterial strains. The proper installation and maintenance practices can further enhance the efficiency, sustainability, and aesthetic value of the FTWs. Further research is suggested to develop guidelines for the selection of right plants and bacterial strains for the efficient remediation of textile effluent by FTWs at large scales.

scholarly journals Large-scale remediation of oil-contaminated water using floating treatment wetlands

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Muhammad Afzal ◽  
Khadeeja Rehman ◽  
Ghulam Shabir ◽  
Razia Tahseen ◽  
Amna Ijaz ◽  
...  
Keyword(s):  
Large Scale ◽  
Treatment Wetlands ◽  
Contaminated Water ◽  
Floating Treatment Wetlands

scholarly journals Role of Microorganisms in the Remediation of Wastewater in Floating Treatment Wetlands: A Review

2020 ◽  
Vol 12 (14) ◽  
pp. 5559 ◽  
Author(s):  
Munazzam Jawad Shahid ◽  
Ameena A. AL-surhanee ◽  
Fayza Kouadri ◽  
Shafaqat Ali ◽  
Neeha Nawaz ◽  
...  
Keyword(s):  
Bacterial Species ◽  
Complex Compounds ◽  
Pollutant Removal ◽  
Specific Role ◽  
Treatment Wetlands ◽  
Plant Microbe Interaction ◽  
Removal Process ◽  
Floating Treatment Wetlands ◽  
Insight Into

This article provides useful information for understanding the specific role of microbes in the pollutant removal process in floating treatment wetlands (FTWs). The current literature is collected and organized to provide an insight into the specific role of microbes toward plants and pollutants. Several aspects are discussed, such as important components of FTWs, common bacterial species, rhizospheric and endophytes bacteria, and their specific role in the pollutant removal process. The roots of plants release oxygen and exudates, which act as a substrate for microbial growth. The bacteria attach themselves to the roots and form biofilms to get nutrients from the plants. Along the plants, the microbial community also influences the performance of FTWs. The bacterial community contributes to the removal of nitrogen, phosphorus, toxic metals, hydrocarbon, and organic compounds. Plant–microbe interaction breaks down complex compounds into simple nutrients, mobilizes metal ions, and increases the uptake of pollutants by plants. The inoculation of the roots of plants with acclimatized microbes may improve the phytoremediation potential of FTWs. The bacteria also encourage plant growth and the bioavailability of toxic pollutants and can alleviate metal toxicity.

Comparing the performance of four macrophytes in bacterial assisted floating treatment wetlands for the removal of trace metals (Fe, Mn, Ni, Pb, and Cr) from polluted river water

Chemosphere ◽  
2020 ◽  
Vol 243 ◽  
pp. 125353 ◽  
Author(s):  
Munazzam Jawad Shahid ◽  
Shafaqat Ali ◽  
Ghulam Shabir ◽  
Muhammad Siddique ◽  
Muhammad Rizwan ◽  
...  
Keyword(s):  
Trace Metals ◽  
River Water ◽  
Treatment Wetlands ◽  
Polluted River ◽  
Floating Treatment Wetlands

scholarly journals Floating treatment wetlands for domestic wastewater treatment

2011 ◽  
Vol 64 (10) ◽  
pp. 2089-2095 ◽  
Author(s):  
J. L. Faulwetter ◽  
M. D. Burr ◽  
A. B. Cunningham ◽  
F. M. Stewart ◽  
A. K. Camper ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Inorganic Nitrogen ◽  
Domestic Wastewater ◽  
Treatment Wetlands ◽  
Synthetic Wastewater ◽  
Treatment Wetland ◽  
Mineral Salts ◽  
Domestic Wastewater Treatment ◽  
Floating Treatment Wetlands

Floating islands are a form of treatment wetland characterized by a mat of synthetic matrix at the water surface into which macrophytes can be planted and through which water passes. We evaluated two matrix materials for treating domestic wastewater, recycled plastic and recycled carpet fibers, for chemical oxygen demand (COD) and nitrogen removal. These materials were compared to pea gravel or open water (control). Experiments were conducted in laboratory scale columns fed with synthetic wastewater containing COD, organic and inorganic nitrogen, and mineral salts. Columns were unplanted, naturally inoculated, and operated in batch mode with continuous recirculation and aeration. COD was efficiently removed in all systems examined (>90% removal). Ammonia was efficiently removed by nitrification. Removal of total dissolved N was ∼50% by day 28, by which time most remaining nitrogen was present as NO3-N. Complete removal of NO3-N by denitrification was accomplished by dosing columns with molasses. Microbial communities of interest were visualized with denaturing gradient gel electrophoresis (DGGE) by targeting specific functional genes. Shifts in the denitrifying community were observed post-molasses addition, when nitrate levels decreased. The conditioning time for reliable nitrification was determined to be approximately three months. These results suggest that floating treatment wetlands are a viable alternative for domestic wastewater treatment.

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