ค้นเจอ 57 รายการ

Carbonaceous biochemical oxygen demand (CBOD)

แปลว่า(Environmental Engineering) The amount of oxygen required to oxidize any carbon containing matter present in a water.

Ultimate biochemical oxygen demand (BODu)

แปลว่า(Environmental Engineering) The total amount of oxygen required to oxidize any organic matter present in a water, i.e. after an extended period, such as 20 or 30 days.

Aerobic process

แปลว่า(Environmental Engineering) A process which requires molecular oxygen.

Anoxic process

แปลว่า(Environmental Engineering) A process which occurs only at very low levels of molecular oxygen or in the absence of molecular oxygen.

Anaerobes

แปลว่า(Environmental Engineering) A group of organisms that do not require molecular oxygen. These organisms, as well as all known life forms, require oxygen. These organisms obtain their oxygen from inorganic ions such as nitrate or sulfate or from protein.

Reaeration

แปลว่า(Environmental Engineering) The dissolving of molecular oxygen from the atmosphere into the water.

Respiration

แปลว่า(Environmental Engineering) Energy production in which oxygen is the terminal electron acceptor, i.e. oxidation to produce energy where oxygen is the oxidizing agent. See fermentation.

Anaerobic process

แปลว่า(Environmental Engineering) A process which only occurs in the absence of molecular oxygen.

Carbonyl

แปลว่า(Environmental Engineering) A functional group with an oxygen atom double bonded to a carbon atom.

Aerobes

แปลว่า(Environmental Engineering) Organisms which require molecular oxygen as an electron acceptor for energy production. See anaerobes.

protein

แปลว่า( เคมี ) ธาตุโปรตีนซึ่งมีอยู่ในเนื้อไขขาว เป็นธาตุที่มีส่วนประกอบของ carbon oxygen, hydrogen และ nitrogen มีบ้างสำหรับกำมะถันและเหล็กกับฟอซฟรัซ ฯลฯ

Facultative

แปลว่า(Environmental Engineering) A group of microorganisms which prefer or preferentially use molecular oxygen when available, but are capable of suing other pathways for energy and synthesis if molecular oxygen is not available.