PRETREATMENT: A process in wastewater treatment where metal screens are used to remove large objects and chunks of debris.
PRIMARY TREATMENT: The first process in wastewater treatment where solid matter is removed.
Pretreatment: Processes used to reduce, eliminate, or alter the nature of wastewater pollutants from non-domestic sources before they are discharged into publicly owned treatment works (POTWs).
pretreatment
any wastewater treatment process used to partially reduce pollution load before the wastewater is introduced into a main sewer system or delivered to a treatment plant; a substantial reduction of the pollution load.
pretreatment 1) The use of physical treatment operations, including racks, screens, communitors, and grit removal devices to remove metal, rocks, sand, eggshells, and similar materials which may hinder the operation of a treatment plant. 2) ...
Pretreatment unit
A wastewater treatment unit that is designed to treat wastewater that does not meet the sewage discharge standards so that it meets or exceeds those standards. Pretreatment units usually require a permit from a local agency.
pretreatment : Methods used by industry and other non-household sources of wastewater to remove, reduce, or alter the pollutants in wastewater before discharge to a POTW.
pretreatment (of wastewater)
Translations of "preliminary treatment (of wastewater)":
Language Translations
Bulgarian: ...
Pretreatment Implementation Review Task Force
PIT
Permit Improvement Team ...
Categorical Pretreatment Standard- A technology-based effluent limitation for an industrial facility discharging into a municipal sewer system. Analogous in stringency to Best Availability Technology (BAT) for direct dischargers.
collection or pretreatment storage facilities not under such
control which are used primarily in connection with such
system. A public water system is either a "community water ...
The addition of chemical coagulants directly to the filter inlet pipe. The chemicals are mixed by the flowing water. Flocculation and sedimentation facilities are eliminated. This pretreatment method is commonly used in pressure filter ...
Tight membrane filters like RO or nanofilter membranes will remove salt and color compounds from water but thorough pretreatment, high pressures and careful cleaning is required leading to high costs per gallon.
pretreatment Processes used to reduce the amount of pollution in water before it enters the sewers or treatment plant. radon Colorless, odorless radioactive gas formed by the decay of radium. react To act in response to something.
 See also: Waste, Water, Treatment, Pollutant, Environment
  
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