{"id":467,"date":"2020-12-09T20:24:04","date_gmt":"2020-12-09T20:24:04","guid":{"rendered":"https:\/\/www.ecoprocessengineering.com\/?page_id=467"},"modified":"2021-03-24T16:12:51","modified_gmt":"2021-03-24T16:12:51","slug":"glossary","status":"publish","type":"page","link":"https:\/\/www.ecoprocessengineering.com\/index.php\/glossary\/","title":{"rendered":"Glossary"},"content":{"rendered":"\t\t
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Activated sludge<\/td>\nAerated wastewater with a suspended biomass.<\/td>\n<\/tr>\n
Aerobic Condition<\/td>\nWhere oxygen is present.<\/td>\n<\/tr>\n
Ammonia\u00a0<\/td>\nShould be called ammoniacal nitrogen.<\/td>\n<\/tr>\n
BOD<\/td>\nBiochemical oxygen demand: the amount of dissolved oxygen consumed by microbial activity over usually a 5-day test at 20\u00b0 C (BOD).<\/td>\n<\/tr>\n
Biofilm\u00a0<\/td>\nA film of biomass or microbial cells attached to a surface usually submerged.<\/td>\n<\/tr>\n
BAF\u00a0\u00a0<\/td>\nBiological Aerated Filter that contains a submerged medium of a high surface area which is aerated. The excess biomass is cleaned or back washed by some method.<\/td>\n<\/tr>\n
BF<\/td>\nBiological filter or trickling filter.\u00a0 This is usually a circular tank filled with media and a distribution system dispersing wastewater over the media.<\/td>\n<\/tr>\n
Cesspool<\/td>\nAn underground watertight tank without outflow used for collecting domestic wastewater. It is a watertight vessel that stores the raw sewage until collected by a tanker.<\/td>\n<\/tr>\n
COD<\/td>\nChemical Oxygen Demand is the amount of oxygen consumed by the chemical oxidation of the matter present in the wastewater sample.<\/td>\n<\/tr>\n
Crust<\/td>\nAccumulated material that collects on top of the primary liquor and which is removed when the system is de-sludged.<\/td>\n<\/tr>\n
Desludging<\/td>\nMethod of removing by suction tanker the accumulated crust, sludge and deleterious material. Sludge removal reduces BOD loading.<\/td>\n<\/tr>\n
DWF<\/td>\nDry Weather Flow is the average daily flow received by the wastewater plant in a day to have originated directly from the premise connected to the plant.<\/td>\n<\/tr>\n
EA\/SEPA\/EHS<\/td>\nEnvironmental Regulators (Environment Agency\/Scottish Environment Protection Agency\/ Environment and Heritage Service Northern Ireland).<\/td>\n<\/tr>\n
Eutrophication<\/td>\nEnrichment of a watercourse or body by nutrients mainly phosphates and nitrates that usually leads to deterioration in the water quality, especially bacterial, algal and\/or plant growth.<\/td>\n<\/tr>\n
Full flow to treatment<\/td>\nThe maximum flow a wastewater plant can treat and is usually expressed as a maximum flow for a set number of hours not repeated more than twice a day.<\/td>\n<\/tr>\n
Humus tank<\/td>\nA settlement tank that follows secondary treatment.<\/td>\n<\/tr>\n
Mixed liquor<\/td>\nThe mixture of microbial solids and wastewater present in activated sludge aeration vessels.<\/td>\n<\/tr>\n
Organic loading<\/td>\nThe amount of BOD present in the wastewater expressed as grams or kilograms per day.<\/td>\n<\/tr>\n
Per capita volume and loads<\/td>\nThe wastewater volume in litres per person per day with the organic and ammonia load expressed in grams.<\/td>\n<\/tr>\n
Population equivalent (pe)<\/td>\nThe notional value is equivalent to a domestic resident usually used for comparisons or sizing a treatment plant which receives some non-domestic wastewater.<\/td>\n<\/tr>\n
Reedbed<\/td>\nA gravel bed with reeds planted to provide some form of additional treatment.<\/td>\n<\/tr>\n
RBC<\/td>\nRotating biological contactor is a treatment plant that has discs that rotate in, but which are not completely submerged in, the settled effluent. The biological treatment takes place on the discs.<\/td>\n<\/tr>\n
Septic tank<\/td>\nA compartmentalised settling tank that provides a limited amount of anaerobic digestion.<\/td>\n<\/tr>\n
Sequencing batch reactor<\/td>\nA treatment process that undergoes a filling, aeration (biomass and wastewater treatment), settlement and discharge phases.<\/td>\n<\/tr>\n
Submerged aerated filter (SAF)\u00a0<\/td>\nA fixed film treatment process in which the media is submerged in the effluent and a mechanical device introduces oxygen.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Activated sludge Aerated wastewater with a suspended biomass. Aerobic Condition Where oxygen is present. Ammonia Should be called ammoniacal nitrogen. BOD Biochemical oxygen demand: the amount of dissolved oxygen consumed by microbial activity over usually a 5-day test at 20\u00b0 C (BOD). Biofilm A film of biomass or microbial cells attached to a surface usually […]<\/p>\n","protected":false},"author":4,"featured_media":0,"parent":0,"menu_order":19,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-467","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/pages\/467","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/comments?post=467"}],"version-history":[{"count":0,"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/pages\/467\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.ecoprocessengineering.com\/index.php\/wp-json\/wp\/v2\/media?parent=467"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}