[{"command":"settings","settings":{"pluralDelimiter":"\u0003","suppressDeprecationErrors":true,"user":{"uid":0,"permissionsHash":"d9587e6f410d2e7f476e3da6cb10a457c78ab82347f962bf83d9020620f901dd"}},"merge":true},{"command":"add_css","data":[{"rel":"stylesheet","media":"all","href":"\/modules\/contrib\/addtocal\/addtocal.css?t2408i"},{"rel":"stylesheet","media":"all","href":"\/themes\/custom\/cest2025\/css\/components\/node.css?t2408i"}]},{"command":"add_js","selector":"body","data":[{"src":"\/core\/assets\/vendor\/jquery\/jquery.min.js?v=3.7.1"},{"src":"\/core\/assets\/vendor\/once\/once.min.js?v=1.0.1"},{"src":"\/core\/misc\/drupalSettingsLoader.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.js?v=10.5.1"},{"src":"\/core\/misc\/drupal.init.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal.js?v=10.5.1"},{"src":"\/modules\/contrib\/addtocal\/addtocal-download.js?v=10.5.1"}]},{"command":"openDialog","selector":"#drupal-modal","settings":null,"data":"\n\u003Carticle class=\u0022node node--type-presentation node--promoted node--view-mode-modal\u0022\u003E\n      \u003Cdiv\u003ESession 20 - Wastewater treatment (4) \u003C\/div\u003E\n  \n      \u003Cb\u003E\u003Cspan\u003ESimulation of Treatment Process of Greywater from Palestinian Households\u003C\/span\u003E\n\u003C\/b\u003E\n  \n      \u003Cdiv\u003E\u003Cb\u003ECEST ID: cest2025_00268\u003C\/b\u003E\u003C\/div\u003E\n  \n        \u003Cdiv class=\u0022mb-3\u0022\u003E\n      \u003Cb\u003ERoom Aegle B | Fri 5 Sep 2025 | 12:45 - 12:45 pm\u003C\/b\u003E\n    \u003C\/div\u003E\n  \n          \n    \n  \n      \u003Cdiv class=\u0022mt-10\u0022\u003E\n            \u003Cdiv class=\u0022clearfix text-formatted field field--name-presentation-body field--type-text-long field--label-hidden field__item\u0022\u003EA physico-chemical greywater treatment system for Palestinian households was simulated based on mechanical filtration followed by adsorption with activated carbon. The system aims to reduce fresh water consumption and enable the reuse of treated greywater for irrigation. The simulation software GPS-X was used to evaluate the efficiency of greywater treatment process by analyzing the effects of operating parameters, including greywater characteristics (i.e., COD, pH, NH\u2083, BOD, PO\u2084\u00b3\u207b), filtration media (i.e., type, particle size), and greywater influent flow rate.\nThe GPS-X system was tested on three main sources of greywater: shower, laundry, and kitchen. The simulation results showed that sand filtration effectively reduced Chemical Oxygen Demand (COD) in all tested samples. Specifically, COD in shower water decreased from 890 mg\/L to 560 mg\/L, in laundry water from 4,200 mg\/L to 4,151 mg\/L, and in kitchen water, which had the highest initial contamination, from \u0026gt;15,000 mg\/L to 7,155 mg\/L.\nHowever, the levels of ammonia (NH\u2083) and phosphate (PO\u2084\u00b3\u207b) remained unchanged after treatment. Ammonia levels stayed at 0.5 mg\/L for shower and kitchen water and 2.5 mg\/L for laundry water, while phosphate concentrations remained the same in all samples: 0.03 mg\/L for shower water, 4.21 mg\/L for laundry water, and 4.47 mg\/L for kitchen water. Additionally, an improvement in flow rate was observed after treatment, indicating that the system effectively filtered water without causing significant clogging, ensuring a smoother and more consistent water flow. These findings are compared to laboratory testing for validating the simulation. \nThe reduction in COD is attributed to the ability of sand filtration to remove suspended particles and partially degradable organic compounds, thereby lowering the concentration of oxidizable organic matter. However, ammonia and phosphate levels remained unchanged because these compounds are dissolved in water and cannot be easily removed through physical filtration alone. Phosphate removal requires chemical precipitation using coagulants. The improved flow rate indicates that the filtration system efficiently prevents particle accumulation, ensuring continuous water passage and reducing the need for frequent maintenance.\u003C\/div\u003E\n      \u003C\/div\u003E\n  \n  \u003Cdiv class=\u0022mt-5 mb-5\u0022\u003E\n          \u003Cspan\u003E\n          \u003Cb\u003EPresenter:\u003C\/b\u003E\n                      \u003Cp\u003E\n            Dr Hussein Amro\n            \u003C\/p\u003E\n                  \u003C\/span\u003E\n      \u003C\/div\u003E\n\n  \u003Cdiv class=\u0022mb-5\u0022\u003E\n          \u003Cdiv class=\u0022field__label\u0022\u003E\n        Authors\n      \u003C\/div\u003E\n              \u003Cp\u003E\n          Hussein  Amro\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Alaa  Abu Sirria\n        \u003C\/p\u003E\n              \u003Cp\u003E\n          Osama  Ahmad\n        \u003C\/p\u003E\n            \u003C\/div\u003E\n\n\u003C\/article\u003E\n","dialogOptions":{"width":"700","position":{"my":"right top","at":"right top"},"closeOnEscape":true,"dialogClass":"presentation-dialog","modal":true,"title":"","classes":{"ui-dialog":"presentation-dialog"}}}]