Comprehensive fate model for metals in municipal wastewater treatment
Article Abstract:
The model used to describe the fate of metals at wastewater treatment plants needs to be reviewed further. The accuracy of the model was validated by statistical evaluations only for some data sets. The model for the primary and the aeration process steps at each treatment plant were calibrated separately, implying that the matrices in which the metals are partitioned are different at each plant. The model must be modified to correlate the metals concentrations with the physical and chemical characteristics of wastewater and consider the dynamics of the treatment systems.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1996
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Cross-flow versus counterflow air-stripping towers
Article Abstract:
John Little and Benito Marinas have concluded that cross-flow air stripping suffers from the high cost of off-gas treatment. However, they failed to assess the implications of off-gas treatment. They were correct in claiming that the quantity of air used in a configuration that minimizes pumping and blower costs should be minimized. On the other hand, systems which require off-gas treatment, gas flow should be reduced and the capacity of the air for holding the pollutant should be maximized.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1999
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Treatment of metal industrial wastewater by fly ash and cement fixation
Article Abstract:
A study conducted by C.H. Weng and C.P. Huang proposes that industrial sewage containing heavy metals can be treated using cement fixation and fly ash. However, adsorption capacities of fly ashes also varies. Adsorption capacity is dependent on lime content. The Delaware fly ash used in the study has a lower lime content than the Saskatchewan fly ash. Weng and Huang contend that lime content is not the only factor in adsorption capacity.
Publication Name: Journal of Environmental Engineering
Subject: Environmental issues
ISSN: 0733-9372
Year: 1996
User Contributions:
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