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BOD Bottle BOD test bottles at the laboratory of a wastewater treatment plant. BOD Bottle or an incubation bottle is a main apparatus used for the Biological Oxygen Demand (BOD) test. During the five-day BOD or BOD5 test process, the BOD bottle is used for incubating diluted samples under the 20 °C or 68 °F of temperature.
BOD test bottles at the laboratory of a wastewater treatment plant. Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period.
The incubator has also provided a foundation for medical advances and experimental work in cellular and molecular biology. While many technological advances have occurred since the primitive incubators first used in ancient Egypt and China, the main purpose of the incubator has remained unchanged: to create a stable, controlled environment ...
A bioreactor is any manufactured device or system that supports a biologically active environment. [1] In one case, a bioreactor is a vessel in which a chemical process is carried out which involves organisms or biochemically active substances derived from such organisms.
Influent organic matter is removed in the A-stage mainly by flocculation and sorption to sludge due to the high loading rates (2–10 g BOD • g VSS −1 • d −1) and low sludge age (typically 4–10 h). Hydrolysis of complex organic molecules occurs improving biodegradability of the influent of the B-stage.
A temperature-controlled shaker, as used in biochemistry work. A shaker is a piece of laboratory equipment used to mix, blend, or agitate substances in a tube or flask by shaking them. It is mainly used in the fields of chemistry and biology. A shaker contains an oscillating board that is used to place the flasks, beakers, or test tubes.
A BOD limit of 30 mg/L will typically be required for streams without demonstrated oxygen deficits -- even if the stream could re-aerate a greater oxygen demand. When lower BOD limits are set for streams, those limits are usually set by mass rather than concentration.
Primary treatment is the "removal of a portion of the suspended solids and organic matter from the sewage". [5]: 11 It consists of allowing sewage to pass slowly through a basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface and are skimmed off.