Unsaturated flow definition

Unsaturated flow means liquid flow through a soil media under a negative pressure potential. Liquids containing pathogens and pollutants come in direct contact with soil/fill material microsites, which enhance wastewater treatment by physical, biological, and chemical means.
Sample 1
Unsaturated flow means liquid flow through a soil media under a negative pressure potential. Liquids containing pathogens and pollutants come in direct contact with soil or fill material microsites that enhance wastewater treatment by physical, biological, and chemical means.
Sample 1
Unsaturated flow means liquid flow through a soil media under a negative pressure potential.
Sample 1

Examples of Unsaturated flow in a sentence

  • Language: English Descriptors: Unsaturated flow; Transport processes; Solutes; Drained conditions; Soil water balance; Water table; Water quality; Prediction; Simulation; Mathematical models; Algorithms Abstract: Long-term assessment of solute transport in the unsaturated zone is an important consideration for irrigation management, pesticide management, and subsurface contaminant restoration analysis and design.

  • Unsaturated flow plays a significant role in wastewater infiltration and treatment.

  • Unsaturated flow in high and low permeability regions is described by two Richards' equations accounting for the linear exchange kinetic25 between them (Gerke and van Genuchten, 1993, Dvory et al., 2016).

  • Unsaturated flow through dredged material in a CDF will be primarily vertical and will not be considered in this evaluation of OCSPS for a CDF, because the potential concern is horizontal flow through the containment system of a CDF.Given Darcy’s Law of flow, the hydraulic conductivity, and the hydraulic gradient, the flow for a given time can be determined.

  • Unsaturated flow is achieved by deploying the distribution unit.Soil infiltration systems is three component system in which a soil bed receive wastewater from the septic tanks or other pretreatment unit using the dozing pumps.

  • Unsaturated flow is assumed to be primarily vertical, since gravity dominates infiltration.

  • This require- TABLE 10.5 OVERVIEW OF THE HYDROGEOLOGIC PROCESS Source and Flow Process Description References RechargeRecharge into the disposal facility may occur from:• Infiltration of precipitation and runoff• Seepage from impoundment waters Kleinmann, 2000 Unsaturated flow inembankment materialsUnsaturated flow in embankment materials is influenced by the recharge rate and unsaturated hydraulic conductivity and generally migrates vertically toward saturated embankment zones.

  • Unsaturated flow moves along the surfaces of the pores or soil particles.

  • These are the Product Consistency Test (PCT), Single Pass Flow Through (SPFT) test, Pressurized Unsaturated flow (PUF) test, Vapor Hydration Test (VHT), and, more recently, three proposed EPA draft methods (EPA 2009a, Method 1313; EPA 2009c 1315, and EPA 2009b,Method 1316).

  • The design of the soil treatment field of a private sewage works should consider the following principles:• Aerobic conditions are present beneath the infiltrative surface.• Unsaturated flow is maintained beneath the infiltrative surface.• Bypass flows and short-circuiting through the soil treatment field is not allowed.• A sufficient vertical separation between a restrictive layer and the infiltrative surface is maintained to avoid saturated flow paths and ensure proper sewage treatment.

Related to Unsaturated flow

  • Unsaturated zone or “zone of aeration” means the zone between the land surface and the water table.

  • Saturated zone or "zone of saturation" means that part of the earth's crust in which all voids are filled with water.

  • Waterborne disease outbreak means the significant occurrence of an acute infectious illness, epidemiologically associated with the ingestion of water from a public water system which is deficient in treatment, as determined by the Division.

  • Intake means “Sanctioned Intake”.

  • Irradiation means the exposure of a living being or matter to ionizing radiation.

  • Infiltration means water other than wastewater that enters a sewer system (including sewer system and foundation drains) from the ground through such means as defective pipes, pipe joints, connections, or manholes. Infiltration does not include, and is distinguished from, inflow.

  • Motorized wheelchair means any self-propelled vehicle designed for, and used by, a handicapped person and that is incapable of a speed in excess of eight miles per hour.

  • Plasma arc incinerator means any enclosed device using a high intensity electrical discharge or arc as a source of heat followed by an afterburner using controlled flame combustion and which is not listed as an industrial furnace.

  • Exfiltration means any unauthorized release of data from within an information system. This includes copying the data through covert network channels or the copying of data to unauthorized media.

  • Hydraulic fracturing means the fracturing of underground rock formations, including shale and non-shale formations, by manmade fluid-driven techniques for the purpose of stimulating oil, natural gas, or other subsurface hydrocarbon production.

  • Inclement Weather means any weather condition that delays the scheduled arrival or departure of a Common Carrier.

  • chemical tanker means a ship constructed or adapted and used for the carriage in bulk of any liquid product listed in chapter 17 of the International Bulk Chemical Code;

  • manoeuvring area means that part of an aerodrome to be used for the take-off, landing and taxiing of aircraft, excluding aprons;

  • Stray radiation means the sum of leakage and scattered radiation.

  • Total tetrahydrocannabinol means the same as that term is defined in § 3.2-4112.

  • Generator Planned Outage means the scheduled removal from service, in whole or in part, of a generating unit for inspection, maintenance or repair with the approval of the Office of the Interconnection in accordance with the PJM Manuals.

  • Cord means the strands forming the fabric of the plies in the pneumatic-tyre.

  • Weathertight means that in any sea conditions water will not penetrate into the ship.

  • Flocculation means a process to enhance agglomeration or collection of smaller floc particles into larger, more easily settleable particles through gentle stirring by hydraulic or mechanical means.

  • Engine degreaser means a cleaning product designed to remove grease, grime, oil and other contaminants from the external surfaces of engines and other mechanical parts.

  • Entombment means the placement of human remains in a crypt.

  • explosive actuated fastening device means a tool that is activated by an explosive charge and that is used for driving bolts, nails and similar objects for the purpose of providing fixing;

  • Potential electrical output capacity means, with regard to a unit, 33 per- cent of the maximum design heat input of the unit.

  • Coefficient means a number that represents the quantified relationship of each variable to the assessed value of a property when derived through a mass appraisal process

  • Rated Voltage means the manufacturer’s design voltage at which the transmission system is designed to operate or such lower voltage at which the line is charged, for the time being, in consultation with Transmission System Users;

  • Runway means a defined rectangular area on a land aerodrome prepared for the landing and take-off of aircraft;