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1 Waste management options on a typical Australian dairy farm.  

1 Waste management options on a typical Australian dairy farm.  

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Rapid changes in regulation, catchment water quality, and public perception are the main driving forces towards more sustainable dairy farming in the Southern Highlands, NSW. A study was undertaken to assess the performance of two established waste management systems in terms of on-farm nutrient control/containment. The systems were installed in th...

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Citations

... It only includes the controllable volume that is deposited in the cowshed and yard. Farm dairy effluent also includes small amounts of udder washwater, milking plant washwater and any milk spillage (Dragten, 2006; Fyfe, 2004; Longhurst, Roberts & O'Connor, 2000; MAF, 1994). " Typical New Zealand dairy farm milking practices lead to a considerable transfer of nutrients from pastures to the cowshed " (Monaghan et al., 2007, p. 186). ...
Article
Dairy farming in the Waikato Region has contributed greatly to the reduction of water quality. Part of this is attributable to the issue of inappropriate disposal of dairy effluent. Regional authority data shows both costs and benefits of complying with effluent management regulations. Private costs result from system and management improvements, while private benefits are largely due to reduced fertiliser requirements. Decreases in the volume of 'non-compliant effluent', resulting from improved compliance, are used as an indicator to illustrate reduced environmental effects. The benefits of becoming compliant outweigh the costs for half the farms analysed. More incentives are required to promote compliance from the other farms although their environmental effects are generally smaller.
There is a growing interest in the application of Anaerobic Digestion (AD) technology to Australian dairy farms not only for the reduction of environmental pollution caused by the effluents but also for recovering bioenergy. To be able to design and operate efficient AD systems, appropriate mathematical models need to be developed to observe and analyse the anaerobic process dynamics, such as the Anaerobic Digestion Model No. 1 (ADM1) model developed by IWA Task Group. However, it has not been applied into various digester configurations to treat dairy shed wastewater originating from hydraulic flood systems that are used in typical Australian farms. In this paper, a critical review of AD technology in the context of Australian conditions and the application of ADM1 model has been described. Batch experiments were conducted to characterise the Australian dairy shed wastewater. New analytical methods for determination of Volatile Fatty Acids (VFAs) and total reducing sugar are further developed.
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En este trabajo se recopila información importante sobre los humedales artificiales de los dos tipos: sistemas de flujo libre (FWS) y sistemas de flujo subsuperficial (SFS). Posee las recomendaciones necesarias para la selección de la zona y los factores que intervienen en la remoción como el clima, la vegetación, las propiedades del agua residual entre otras. También se tienen los rendimientos esperados, el mantenimiento de los humedales, y las consideraciones ambientales. Se desarrolla también los modelos de remoción de la DBO y el diseño hidráulico de los dos tipos de humedales, finalmente se tiene el dimensionamiento de un humedal de flujo subsuperficial a las condiciones de Manizales que puede ser implementado en los canales de las estructuras de control de erosión. In this job is supplied important information about two kinds of constructed wetlands: systems free water surface (FWS), y systems of subsurface flow (SFS). It has the necessary findings for the selection of the zone and the factors that intervene in the removal like the weather, the vegetation, the properties of the waste water and others. Also It has the expected performance, the wetland’s maintenance, and the environmental consideration. It develops the model of DBO remove and design hydraulic of the two kinds of wetlands, finally It has the magnitude of the subsurface flow wetland to the condition of Manizales It could be implemented in the canals of the structure of control of erosion.