Sentence examples for of sludge generation from inspiring English sources

The amount of sludge generation was in the range of 100 175 mg L−1 and the sludge produced at the optimal concentration was 170 mg L−1.

For this reason, it is necessary to reduce the amount of sludge generation by improving the efficiency of the treatment methodologies and implementing new technologies able to use sludge as raw material for compost, generate biomolecules and energy.

Wet anaerobic digestion (W-AD) is widely applied to treat livestock and poultry breeding wastewater, food waste and energy crop due to high methane yield per unit substrate, low level of sludge generation and convenient operation and maintenance (Zhang et al. 2000; Demirel and Scherer 2009; Nagao et al. 2012).

Utilization of waste sludge as a renewable resource for energy recovery is the appropriate solution of how to manage the continuously increasing waste sludge generation effectively in order to meet stringent environmental quality standards, and at the same time, how to sustain the supply of reliable and affordable energy for our future generations and ourselves.

Energy demand was calculated from aeration and pumping costs, with aeration based on a combination of empirical relationships for membrane aeration and mass balance, and the modified Activated Sludge Model version 2 used for estimating tank size and sludge generation.

Sludge generation Biological methods  Biodegradation Economically attractive.

These methods have certain drawbacks like secondary pollution, high sludge generation and high capital investment.

The main drawback of these techniques relates to the disposal of the spent contaminated activated sludges, generation of toxic by-products, severe operation conditions (e.g., high temperature and high pressure) and the slow reaction rates, which mean higher energy consumption and expensive running cost.

The application of either natural or mineral coagulants is associated with generation of sludge.

Membrane-based treatment of wastewater is being explored recently due to its efficiency and less generation of sludge.

Some of these methods are termed to be effective; also they possess underlying drawbacks such as high cost, intensive energy requirements, and formation of hazardous byproducts and generation of sludge which causes secondary pollution [ 3].