Green and sustainable natural wastewater treatment/disposal technologies

This chapter focuses on the concepts and major categories of green and sustainable wastewater treatment and disposal technologies (GSNWWTDTs). It also focuses on few selected GSNWWTDTs. The chapter explores the principles, advantages, applications, and considerations of GSNWWTDTs. It describes the strategies to implement these GSNWWTDTs along with future trends. Some of the selected GSNWWTDTs described in the chapter include lagoon treatment systems, wetlands and aquatic treatment systems, anaerobic digestion, and geopurification systems. Management strategies for sustainable GSNWWTDTS and decentralized wastewater management (DWM) systems should be site-specific, considering the local social, cultural, environmental, and economic conditions. Choice of the most appropriate technology for the local conditions is an important management strategy. Effective programs for wastewater management and reclamation, including education and information programs, laws and standards, wastewater reclamation and reuse programs, coupled with public involvement in decision making, would ensure sustainable urban wastewater management for communities.