ผลการค้นหา

ค้นเจอ 37 รายการ

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.

Nitrification

(Environmental Engineering) The biological oxidation of ammonia and ammonium sequentially to nitrite and then nitrate. It occurs naturally in surface waters, and can be engineered in wastewater treatment systems. The purpose of nitrification in wastewater treatment systems is a reduction in the oxygen demand resulting from the ammonia.

Denitrification

(Environmental Engineering) The anoxic biological conversion of nitrate to nitrogen gas. It occurs naturally in surface waters low in oxygen, and it can be engineered in wastewater treatment systems.

waste drain

ท่อระบายของเสีย

overflow (1)

ทางทิ้งน้ำ : ดู [[wasteway]]

Receiving water

(Environmental Engineering) A water which receives wastewater (treated or otherwise) discharges.

waste channel

ร่องทิ้งน้ำ : ทางน้ำที่ทำขึ้นเชื่อมต่อระหว่างระบบส่งน้ำกับทางน้ำธรรมชาติ หรือแอ่งน้ำขนาดใหญ่ เพื่อระบายน้ำส่วนเกินในระบบทิ้งไปในทางน้ำธรรมชาติ หรือแอ่งน้ำดังกล่าว

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.

Blast Furnace Slag

(Concrete Engineering) A non-metallic waste product developed in the manufacture of pig iron, consisting basically of a mixture of lime, silica and alumina, the same oxides that make up portland cement, but not in the same proportions or forms. It is used both in the manufacture of portland blast furnace slag cement and as an aggregate for lightweight concrete.

Dump

(Environmental Engineering) An illegal and uncontrolled area where wastes have been placed on or in the ground. See Landfill.

Source reduction

(Environmental Engineering) The elimination or reduction of the waste at the source by modification of the actual process which produces the waste.

Landfill

(Environmental Engineering) A legal and controlled area for the placement of wastes into the ground.

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