Secondary standards |
(Environmental Engineering) Recommended drinking water quality standards which relate to aesthetics and/or health. These standards are recommended, not required. See primary standards. |
Secondary treatment |
(Environmental Engineering) In wastewater treatment, the conversion of the suspended, colloidal and dissolved organics remaining after primary treatment into a microbial mass with is then removed in a second sedimentation process. Secondary treatment included both the biological process and the associated sedimentation process. |
Secured landfill |
(Environmental Engineering) A landfill which has containment measures such as liners and a leachate collection system so that materials placed in the landfill will not migrate into the surrounding soil, air and water. |
Shock load |
(Environmental Engineering) Influent wastewater entering the plant which has an unusually high organic content and/or high flow rate. |
Site remediation |
(Environmental Engineering) The process of cleaning up a hazardous waste disposal site that has either been abandoned or that those responsible either refuse to cleanup or are financially unable to cleanup. |
Source reduction |
(Environmental Engineering) The elimination or reduction of the waste at the source by modification of the actual process which produces the waste. |
Surface water |
(Environmental Engineering) Water which is contained in lakes, rivers, and oceans. |
Suspended growth reactor |
(Environmental Engineering) A reactor in which the microorganisms are suspended in the wastewater. Examples of suspended growth reactors are activated sludge reactors and anaerobic digesters. See attached growth reactor. |
Total dissolved solids |
(Environmental Engineering) (TDS) is the amount of dissolved matter in the water. |
Total solids |
(Environmental Engineering) (TS) is the amount of organic and inorganic matter which is contained in a water. |