Landfill leachate management
Mandeep Singh, Muntjeer Ali, Nehaun Zargar, Vinay Kumar Tyagi, Absar Ahmad Kazmi, C. S. P. Ojha
Abstract
Landfill leachate management is a critical aspect of waste management, as it involves the collection and treatment of liquids that form when rainwater and other liquids seep through solid waste in landfills which can pose a threat to the environment and public health if not properly managed. Landfill leachate management involves the use of various technologies to treat the liquid that seeps through waste in landfills. Some common technologies include physical treatment such as screening, sedimentation, and filtration; chemical treatment which involves adding chemicals to stabilize and neutralize the leachate; biological treatment which uses microorganisms to break down organic matter; evaporation/incineration which reduces the volume of leachate; and membrane processes such as reverse osmosis and ultrafiltration which remove impurities. The most effective technology or combination of technologies depend on the characteristics of the leachate and local regulations. In some cases, a combination of technologies may be required to adequately treat the leachate and achieve the desired level of treatment. This chapter provides an overview of the sources and composition of landfill leachate, its potential impacts, and the current state of treatment methods. The chapter highlights the importance of proper leachate management and the need for continued research and development of innovative treatment technologies to improve the environmental performance of landfills.