แปลว่า(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.

ศัพท์ช่างภาษาอังกฤษ – ไทย

Bright Dipping

แปลว่า(english) Chemical polishing of aluminum, often by treatment with a mixture of nitric acid and phosphoric acid, yielding a mirror-shiny (specular) highly reflective surface. It is almost always followed by anodizing to protect the surface and provide some choice of color.

ศัพท์ช่างภาษาอังกฤษ – ไทย

POTW

แปลว่า(Environmental Engineering) or Publicly Owned Treatment Works Any municipally owned wastewater treatment facility.

ศัพท์ช่างภาษาอังกฤษ – ไทย

Aging 1

แปลว่า(english) A change in the properties of certain metal and alloys (such as steel) that occurs at ambient or moderately elevated temperatures after a hot working heat treatment or cold working operation. Typical properties impacted are hardness, yield strength, tensile strength, ductility, impact value, formability, magnetic properties, etc. See also Non-aging.

ศัพท์ช่างภาษาอังกฤษ – ไทย

Primary treatment

แปลว่า(Environmental Engineering) Treatment which includes all operation prior to and including primary treatment, e.g., bar screening, grit removal, comminution, and primary sedimentation.

ศัพท์ช่างภาษาอังกฤษ – ไทย

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