AWWA's most popular operator training aid, this study guide is specially designed to give water operators and students practice in answering questions that are similar in format and content to the questions that appear on state certification exams. Sample questions and answers for both water treatment and distribution systems are included. This study guide was developed by AWWA in cooperation with the Association of Boards of Certification (ABC), which certifies water and wastewater operators in most states. ABC certification is not only a way to protect public health and the environment, but also provides numerous career benefits to both employees and employers. If you were previously familiar with AWWA's Water Operator Certification Study Guide, Sixth Edition this replaces that book, with all-new questions and answers.

The exponential growth of urban settings has led to an increase in pollutants and waste management issues around the world. As the environment continues to falter under the weight of these pressing issues, it has become increasingly imperative to develop new technologies and methodologies that have the potential to improve the overall sustainability and cleanliness of these cities. Smart Cities as a Solution for Reducing Urban Waste and Pollution examines emergent research on smart innovations within built urban environments. Featuring best practices and theoretical frameworks, as well as potential issues in the implementation of smart and green technology in urban settings, this publication is a vital reference source for graduate students, researchers, academics, engineers, architects, facility managers, and government officials.

Today we can predict storms, reuse wastewater, and desalinate inland waters. And while technology makes it easier to quickly communicate, it can also strip away our humanity. Rather than succumb to the pull of anonymity created by that same technology, this book was written to help blur the lines between the experts and the public they affect. It means the experts never forgetting there are real people trusting them that the water is indeed "safe" to swim in or the wastewater can be treated to a level safe enough to drink. It means the public recognizing that operators must fix a main break no matter when it occurs. It means bringing the public into the mix upstream, at the discovery point of the problem rather than waiting to hand them only the preferred solution. No longer is lifting the experts' curtain only when they're ready to theatrically reveal solutions acceptable. Gone are the days when the public trusts all of the negotiations, problem solving, and hidden props appearing after the production of the water experts is complete. For the one thing you can predict about us humans is that hidden beneath the facade of logic, is our deep-seated emotional side. For only with a solid understanding of the consumer's hidden world of perceptions and irrationality, can we truly communicate the value of water. This book reveals the power of engaging the public when communicating the value of water when it involves wastewater, stormwater and watersheds. Through stories of success and why communications can fail, this book is written for wastewater utilities, watershed stewards and stormwater managers, engineers, operators, stakeholders, elected officials, and anyone that truly wants to make a difference in the public's perception when it comes to the value of water.

The notion of a lifestyle system leading to zero waste is obviously appealing, and a strategy of total reuse and recycling of: waste material is often advocated. However, there is a growing realization that the recycling process itself produces waste, and the environmental and economic cost of recycling and reusing certain materials invalidates the zero waste approach as a universally viable solution. Thus, solutions must be found to deal with the part of waste that it is not practicable to recycle or reuse. The energy content of municipal waste (whether raw or classified) is about 10MJ kg-1. If the total amount of waste material in any region is around 30 million tons per year or about 1000 kg/ s, the total energy is thus 10,000MJ /s = 10,000 MW. At an electricity generation efficiency of 20%, this could provide 2000 MW plus about 6000MWof district heating. This energy source is largely biomass, which is carbon dioxide neutral, and thus does not contribute to the total atmospheric greenhouse gases. The present work includes many aspects of municipal solid waste combustion, such as the effects of moisture, particle size and ash content effects on solid particle during process rates (moisture evaporation, volatile release, and char burning rate). The COMMENT code has developed to reveal much detailed information on the combustion processes. Through experimental and numerical investigations, the combustion process of simulated MSW in bed can be better understood and the experiment results can be used to amend the mathematics model and be consulted by the application in the project. The results from modeling can show the combustion process, and make us deeply know how the heat transfers in the fuel and gas yields from fuel. At the same time, the simulation can predict the maximum temperature of waste incineration and the trend concerning combustion.