Updated in April 2008The following is a recently updated collection of vocabulary terms as well as symbols and acronyms commonly used by operators and engineers in the wastewater treatment field. A B C D E F G H I J K L M N O P Q R S T U V W X Y ZSymbols and AcronymsThese resources are part of WEF's Operation of Municipal Wastewater Treatment Plants Study Guide (2007) which is available for purchase in the Marketplace.