Winkler published the methodology of a simple, exact and direct dissolved oxygen analytical procedure in 1888.[eleven] Since that point, the Evaluation of dissolved oxygen concentrations for drinking water continues to be key on the determination of area drinking water.
BOD would be the Organic method used for the measurement of the full degree of dissolved oxygen (DO) used by microbes within the biological means of metabolizing natural molecules existing in h2o.
The biggest challenge during the BOD test relates to time, because the Keeping time to get a BOD sample is forty eight hrs from assortment. For BOD to work properly there has to be a adequate inhabitants of healthier microbes inside the bottle.
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“If the BOD is 300mg/l and over, sewage is claimed to get healthy, and when is 100mg/l or down below it is claimed to become weak”. I question if this assertion is correct, it must have been Should the BOD is 300mg/l and over, sewage is said to be weak, and if is 100mg/l or underneath it is said to generally be healthy
เนื่องจากการทดสอบค่าบีโอดีนี้ เกี่ยวข้องกับจุลินทรีย์ในน้ำ จึงจำเป็นต้องทำให้น้ำ มีสภาพที่เหมาะสม สำหรับการเจริญเติบโตของจุลินทรีย์ คือ ไม่มีสารพิษ แต่มีอาหารเสริมเพียงพอสำหรับจุลินทรีย์ เช่น ไนโตรเจน ฟอสฟอรัส
ตามมาตรฐานสมาคมวิศวกรสิ่งแวดล้อมแห่งประเทศไทยและมาตรฐานจากอเมริกา
The Germs test here measures the existence and amount of micro organism from the urine. Commonly, urine is sterile, though the presence of microbes suggests an infection in the urinary program. This test helps diagnose UTIs, bladder bacterial infections, along with other associated conditions, guiding proper cure options.
Under regular situation, the liver converts bilirubin into urobilinogen. here Many of this urobilinogen is reabsorbed in the blood, excreted because of the kidneys, then eliminated from the body through urine.
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Normally, the liver converts bilirubin into a variety that may be excreted into bile and at some point eliminated from your body.
Just take five liters of double-distilled drinking water and air-situation it using clear compressed air for at least twelve several hours.