Journal ArticleDOI
Treatment of tannery wastewater by chemical coagulation
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TLDR
In this paper, the influence of pH and coagulant dosages on the coagulation process was studied and conditions were optimised corresponding to the best removal of organic matters, suspended solids as well as chromium.About:
This article is published in Desalination.The article was published on 2004-04-15. It has received 323 citations till now. The article focuses on the topics: Chromium & Wastewater.read more
Citations
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Journal ArticleDOI
Recent Advancement of Coagulation–Flocculation and Its Application in Wastewater Treatment
TL;DR: In this article, a critical review on recent studies of coagulation-flocculation treatment processes of various industrial wastewaters is presented, where the limitations and challenges for the coagulated-fluctuation process such as toxicity and health hazard posed by inorganic coagulants, production of large amount of toxic sludge, ineffectiveness in removing heavy metals and emerging contaminants, increase in effluent color, inefficient pollutant removal using natural coagULants, and complexity of scaling up procedure are presented.
Journal ArticleDOI
Hexavalent chromium removal from aqueous medium by activated carbon prepared from peanut shell: Adsorption kinetics, equilibrium and thermodynamic studies
TL;DR: In this article, the effects of pH, contact time, initial concentration of adsorbate and temperature on adsorption of activated carbon were investigated, and the results showed that both Langmuir and Freundlich models fitted the data reasonably but the Langmuirusorption isotherm model fitted better in the temperature range studied.
Journal ArticleDOI
Constructed wetlands for treatment of industrial wastewaters: A review
TL;DR: In this article, constructed wetlands have been used for wastewater treatment for more than fifty years and most applications have been designed to treat municipal or domestic wastewater but at present, constructed wetlands are successfully applied to many types of wastewater.
Journal ArticleDOI
Chemical and biological treatment technologies for leather tannery chemicals and wastewaters: a review.
TL;DR: This paper, as the-state-of-the-art, attempts to revise the over world trends of treatment technologies and advances for pollution prevention from tannery chemicals and wastewater to apply the best prevention solution for the future tanneries.
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Wastewater treatment in dairy industries — possibility of reuse
TL;DR: In this article, the reuse of wastewater from the dairy industry was investigated using coagulation, adsorption and membrane separation using different types of coagulants categorized as inorganic, polymeric and organic having biological origins.
References
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Book
Standard methods for the examination of water and wastewater
TL;DR: The most widely read reference in the water industry, Water Industry Reference as discussed by the authors, is a comprehensive reference tool for water analysis methods that covers all aspects of USEPA-approved water analysis.
Journal ArticleDOI
Coagulation by hydrolysing metal salts
Jinming Duan,John Gregory +1 more
TL;DR: In this paper, a detailed understanding of the sweep flocculation mechanism is provided, especially with regard to the role of charge neutralization and hydroxide precipitation. But the results can be reasonably well explained in terms of established ideas, and there are also some uncertainties regarding the action of pre-hydrolysed coagulants.
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Quality of water treated by coagulation using Moringa oleifera seeds
TL;DR: In this article, a model turbid water was treated by coagulation-flocculation and sedimentation, with Moringa oleifera seeds as a coagulant, using jar tests.
Book
Water and Wastewater Technology
TL;DR: Wastewater Flows and Characteristics of Watersheds are described in detail in this paper, with a focus on the capacity, management, operation, and maintenance of wastewater collection systems.
Journal ArticleDOI
Landfill leachates pretreatment by coagulation-flocculation
A. Amokrane,C. Comel,J. Veron +2 more
TL;DR: In this paper, the most effective coagulant between ferric chloride and aluminium sulphate, optimal pH and most effective flocculant between anionic, cationic and nonionic polymers were examined in order to reduce the landfill leachates high fouling power, coagulation-flocculation is examined as reverse osmosis pretreatment.