Results 311 to 320 of about 368,447 (347)

Effluent Treatment

1995
This chapter addresses both the requirement to treat effluents produced during and after fermentation process and the treatment methods, which may be applied. The effects of effluents on receiving water quality, in particular, dissolved oxygen concentration is considered along with an overview of the regulation and legislation pertaining to waste ...
Peter F. Stanbury, Allan Whitaker, Stephen J. Hall   +2 more
openaire   +3 more sources

Dairy shed effluent treatment and recycling: Effluent characteristics and performance

Journal of Environmental Management, 2016
Dairy farm milking operations produce considerable amounts of carbon- and nutrient-rich effluent that can be a vital source of nutrients for pasture and crops. The study aim was to characterise dairy shed effluent from a commercial farm and examine the changes produced by treatment, storage and recycling of the effluent through a two-stage ...
Julian Fyfe, Dharma Hagare, Muttucumaru Sivakumar   +2 more
openaire   +4 more sources

The Aerobic Treatment of Silage Effluent: Effluent Characterization and Fermentation

Journal of Agricultural Engineering Research, 1995
Abstract Analyses were made to characterize silage effluent and identify its major constituents, both in the raw state and during treatment processes. Determinations of volatile fatty acids (VFA) and lactic acid in silage effluent were made using a modified high performance liquid chromatography (HPLC) method. Other analyses made included biochemical
K.R. Gray, E. Galanos, A.J. Biddlestone, K. Thayanithy   +3 more
openaire   +2 more sources

Role of livestock effluent suspended particulate in sealing effluent ponds

Journal of Environmental Management, 2015
Intensive livestock feed-lots have become more prevalent in recent years to help in meeting the predicted food production targets based on expected population growth. Effluent from these is stored in ponds, representing a potential concern for seepage and contamination of groundwater.
Bennett, J. McL., Warren, B. R.
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Effluent recycle and waste minimization in prawn farm effluent

Journal of Cleaner Production, 1999
Abstract Prawn farms withdraw huge quantities of sea water and discharge 5–30% of it back to the estuary during water exchange process. The effluent from the prawn ponds contains large quantities of solids, nitrogen, phosphorus and algae and it cannot be discharged into the estuary or ocean without proper effluent treatment.
Huu Hao Ngo, K.L Wee, Saravanamuthu Vigneswaran   +2 more
openaire   +2 more sources

Coagulation–flocculation–decantation of dye house effluents: concentrated effluents

Journal of Hazardous Materials, 2004
The treatment and valorization (recycling of water and mineral salts) of dyeing effluents constitutes a major economic and environmental issue. Cotton dyeing using reactive dyes is actually the most polluting in terms of discharge. In order to treat and valorize the effluent from a dyeing process using reactive dyes, the firm Clariant and the LPPE have
C. Allegre, F. Charbit, Philippe Moulin, M. Maisseu   +3 more
openaire   +3 more sources

Effluent Charges versus Effluent Standards

1974
In their book, Managing Water Quality [6], Kneese and Bower suggested that the use of effluent charges may be more efficient than the use of regulations in environmental policy. The reason for this is that charges induce those firms, for whom it is cheap to reduce activities harmful to the environment, to undertake large-scale reductions, while higher ...
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Effluent Charges: A Critique *

The Canadian Journal of Economics, 1973
Effluent Charges: A Critique. This paper argues that the case for effluent charges as a solution to environmental problems has been substantially overstated mainly because of a general failure to confront the numerous complexities generated by any real world application of the charge technique.
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Treatment of phenolic effluents

Journal of Biochemical Toxicology, 1959
AbstractThe following methods of disposal and treatment of phenolic liquors from coke oven plants are studied: direct use on froth flotation media in coal washing plant. The coal absorbs 60% of the phenols present, but only half the normal output can be used in this way. chemical oxidation of the phenols by ozone.
D. A. Hall, G. R. Nellist
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Nonlinear Effluent Charges

Management Science, 1973
This work derives an effluent taxation structure for meeting a specified level of regional environmental quality. It is demonstrated that the nonlinearity of the proposed charge scheme flaunts equilibrium results identical to linear user-charge programs but elicits superior dynamic characteristics.
openaire   +2 more sources