Pulses of oil were added to completely mixed reactors fed with dairy cow manure and food waste, after achieving a stable performance at an organic loading rate of 4.6+/-0.1gCOD/(l(reactor) day), an oily waste effluent from a canned fish processing industry was fed in the form of pulses. The oil concentration rose up to 9, 12, 15 and 18gCOD(oil)/l(reactor,) after the pulse feeding in the reactor...

A short term solution for the treatment of dairy waste water is discussed. Discharge rate'is 500 m3lday with a high organic load (2,750 Kg CODlday). Low capital investment (US $ 330,000) and operational (US$ 0.55lm3) costs were required which ought to be competitive with current market prices but within the official environmental norms imposed by the national agency SEDESOL. The problem was sol...

The culture conditions of lactose fermenting, spore forming probiotic Bacillus subtilis SK09 isolated from dairy effluent were optimized by response surface methodology to maximize the biomass production. The student’s t-test of the Placket-Burman screening design revealed that the effects of pH, ammonium citrate and peptone were more significant and these variables were further optimized using...

A short term solution for the treatment of dairy waste water is discussed. Discharge rate'is 500 m3lday with a high organic load (2,750 Kg CODlday). Low capital investment (US $ 330,000) and operational (US$ 0.55lm3) costs were required which ought to be competitive with current market prices but within the official environmental norms imposed by the national agency SEDESOL. The problem was sol...

Purpose: The aimed witch of this study was to evaluate the chemical changes in soil cultivated with Panicum maximum cv. Mombaça grass, when submitted application different doses dairy effluent (ARL), sodium as a limiting factor.
 
 Method/design/approach: Was applied ARL an area grass order provide at concentrations 75, 150, 300 and 600 Kg ha-1. Soil samples were collected depths time...

Lipases are enzymes used in various industrial sectors such as food, pharmaceutical and chemical synthesis industries. The selection of microorganisms isolated from soil or wastewater is an alternative to the discovery of new species with high enzymes productivity and with different catalytic activities. In this study, the selection of lipolytic fungi was carried out by submerged fermentation. ...

In this study, pretreated organic wastes such as waste paper cups, cardboard waste, and vegetable were screened for the growth lipid production of oleaginous bacteria DS-7 (isolated from dairy effluent scum). The was found to be best feedstock biomass by DS-7. Further, process parameters inoculation time, substrate concentration (w/v) (amount waste), pH, inoculum size optimized using a multi-ob...

Anaerobic digestion of dairy manure with energy recovery through biogas combustion is generally viewed as a positive environmental approach to increase the use of renewable energy. However, there are potential negative impacts associated with emissions of methane and nitrogen species during digestion and after spreading of digester effluent that have the potential to counteract the environmenta...

Over the last ten years there has been an increasing awareness of the impacts of uncontrolled biological waste discharge into the receiving waters. The types of impact such discharges produce in the receiving waters are discussed. Early standards were based on overseas research but there is now a substantial body of New Zealand based work. Initial research concentrated on dairy shed discharges ...

During the last two decades the brewing industry has shown increasing awareness for environmental protection and the need of sustainable production processes. Implementation of ISO 14001 certification and more stringent environmental legislation have been important drivers for the brewing industry to invest in biological effluent treatment. The role of biological effluent treatment is discussed...