دانلود کتاب بازیابی منابع از فاضلاب به سمت پایداری

Wastewater has to be properly treated prior to discharge into the environ­ment to protect the receiving water bodies from adverse impacts. As the quantities increase with the population growth, the requirements for organic carbon and macronutrient removal also increased. There are many physical, chemical, and biological processes that help achieve this goal. The most commonly used technology to remove organic carbon is activated sludge process which requires aeration while nitrification/denitrification processes remove nitrogen. Phosphorous can be removed through sludge collection,

chemical precipitation, and biological processes.

Wastewater treatment requires significant energy and chemicals and produces large quantities of sludge requiring further management. However, in recent years, wastewater has become a key player in managing the nutrient and water needs of many communities due to increasing water scarcity and water quality issues. Once considered as a nuisance and environmental burden, wastewater is now viewed as a resource in many communities around the world due to its potential to contribute to nutrient and water resource demands. However, many advances are essential to exploit and extract the resources available through wastewater. There is a strong urge for developing both scientific and practical knowledge required for transitioning the current resource-demanding wastewater treatment plants (WWTPs) into resource and revenue-generating water resource recovery facilities (WRRF). Towards this end, this book provides a comprehensive knowledge on various aspects of wastewater resource management from the point of process sustainability and resource recovery. This authoritative information is crucial for developing resource-efficient and sustainable wastewater treat­ment technologies and management strategies for both small (decentralized) and large (centralized) communities.