What are the refractory organics?
What are the refractory organics?
A variety of organic compounds are classified as refractory when they’re poorly biodegraded and/or exhibit a low value for the ratio of biological oxygen demand to chemical oxygen demand (BOD:COD).
Which of the following technology can be used for the treatment of refractory organic compounds?
Wet air oxidation (WAO) is one of the most economical and environmentally-friendly advanced oxidation processes. It makes a promising technology for the treatment of refractory organic pollutants in industrial wastewaters.
What is refractory COD?
Refractory COD is organic compounds that show up in the COD tests as being chemically oxidizable, but are not readily biodegradable.
What happen if COD is low?
Chemical Oxygen Demand (COD) is the amount of the amount of oxygen that is needed to oxidize soluble and particulate organic matter in water. A Low concentration of Dissolved Oxygen is harmful life forms which oxygen to live.
What is dissolved organic carbon made of?
The labile dissolved organic carbon is mainly produced by marine organisms and is consumed in the surface ocean, and consists of sugars, proteins, and other compounds that are easily used by marine bacteria.
What is organic in wastewater?
Many kinds of organic compounds, such as PCBs, pesticides, herbicides, phenols, polycylic aromatic hydrocarbons (PAHs), aliphatic and hetercyclic compounds are included in the wastewater, and industrial and agricultural production as well as the people living could be the source of organic wastewater endangering the …
What are refractory pollutants?
A variety of compounds are classified as refractory when they are poorly biodegraded and/or exhibit a low value for the ratio of biological oxygen demand to chemical oxygen demand (BOD/COD) (Frimmel et al. 2008; Kopinke et al. 2002).
What causes COD in wastewater?
Background: Chemical oxygen demand (COD) is often used to measure organic matter in wastewater, treated effluent, and receiving waters. Residual food waste from bottles and cans, antifreeze, emulsified oils are all high in COD and are common sources of COD for industrial stormwater.
What does it mean to have a refractory period?
The refractory period is the span of time after having an orgasm during which a person is not sexually responsive. The refractory period can have both mental and physiological effects.
Which is the best example of a basic refractorie?
Basic refractories will often react with acids at high temperatures. Basic refractories, therefore, are most suited to when the atmosphere in the local environment and/or the slag produced will be basic as well. Magnesite, zirconia and dolomite are widely used refractories.
How does bacteria produce refractory dissolved organic matter?
Thus, bacteria rapidly produced a major component of refractory DOM from labile substrates.
What foods should I eat during my refractory period?
Eat a healthy diet. Fill your diet with foods that increase blood flow, such as salmon, citrus, and nuts. It’s important to remember that everyone has a different refractory period. You may even notice that your individual refractory period varies from session to session.
