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Articles by Frederick Bloetscher
Assessing the Effects of Anaerobic Co-Digestion with FOG and Food Waste Residuals on Biogas Production
1. Introduction Nearly one-third of global food production is wasted at an annual cost of $990 billion [1]. In developed nations, up to 40% of this food waste is discarded at the post-consumer level [2]. Americans waste $408 billion of food, which costs an average family of four $1800 per year [3]. According to USEPA (2018) [4], the United States produces about 292.4 million tons of municipal solid waste (MSW) annually.
Are Failure Rates on All Water Distribution Systems the Same? (Comparing Predictions among Nine Utilities in Southeast Florida)
Step 1: Create a table of all buried assets. Step 2: Create columns for the variables for which you have data. Note that where there are categorical variables (type of pipe for example), these need to be converted to separate yes/no questions as mixing. Categorical and numerical variables do not provide appropriate comparisons; hence the need to alter the categorical variables to absence/presence variables.
Development of Localized Assessment of Municipal Wastewater Disposal Risks
1. Introduction Regulatory, political, and economic constraints have shaped wastewater management strategies throughout the United States. Historically the easiest means to dispose of wastewater is via the nearest river or stream. Such disposal goes back to Roman times. However, as the communities grew, the environmental degradation caused by this practice became clearer, and regulations to eliminate raw wastewater disposal were legislated.
Assessing relative risks of municipal wastewater disposal options for Southeast Florida
REFERENCES , & (1975). Statistical prediction analysis. Cambridge University Press. , , , , & (2017). Quantifying pathogen risks associated with potable reuse: A risk assessment case study for cryptosporidium. Water Research, 119, 252–266. (1990). The concept of probability in safety assessments of technological systems, Science, 250(4986), 1359–1364. , & (1990). Virus risk analysis in wastewater reclamation and reuse. In H. H. Hahn, & R. Klute (Eds.), Chemical water and wastewater treatment. Springer-Verlag.
Water System Condition and Asset Replacement Prioritization
1. Introduction Public infrastructure has been poorly rated by the American Society of Civil Engineers for over 20 years [1] - [6] and most public officials acknowledge the deterioration of the infrastructure we rely on daily. At present state and local governments spend about 1.8% of the GNP on infrastructure, as compared to 3.1% in 1970 [7] .
Aquifer Storage and Recovery: Can an Updated Inventory Predict Future System Success?
A common water management practice is for treated or treatable water to be pumped below ground and stored to preserve and protect current water resources, prepare for future droughts, recharge wellfields, and store water for use at a later time to sustain development (AWWA 2015).
Water Service Line Repair Versus Replacement
Water and sewer utilities are created to develop safe, reliable, and financially self-supporting potable water and sanitary sewage systems to meet the needs of their service areas. They also ensure that existing and future utility facilities are constructed, operated, and managed at a reasonable cost to the communities they serve.
How Can I Better Understand My Role as a Supervisor or Manager?
Understanding one's role in a new job or industry can be challenging. Depending on who or what you supervise, the answer may vary, but underlying goals are the same in any organization.
Improving resilience against the effects of climate change
The scientific literature provides strong evidence that global climate change is affecting the world's water resources (19; 17; 11), including ocean acidification, global temperature rise (Figure 1), receding ice caps, melting glaciers, changing precipitation patterns, and sea level rise (10; 19; 20; 11).
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