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Wastewater treatment plants may be distinguished by the type of wastewater to be treated. There are numerous processes that can be used to treat wastewater depending on the type and extent of contamination. The treatment steps include physical, chemical and biological treatment processes. [citation needed] Types of wastewater treatment plants ...
It is published by Elsevier on behalf of the International Society for Heart and Lung Transplantation, of which is the official journal. The editor-in-chief is Mandeep R. Mehra (Harvard Medical School). According to the Journal Citation Reports, the journal has a 2021 impact factor of 13.569, the highest of any journal in cardiothoracic surgery ...
Treatment in urbanized areas is typically handled by centralized treatment systems. Alternative systems may use composting processes or processes that separate solid materials by settlement and then convert soluble contaminants into biological sludge and into gases such as carbon dioxide or methane .
The RBC process allows the wastewater to come in contact with a biological film in order to remove pollutants in the wastewater before discharge of the treated wastewater to the environment, usually a body of water (river, lake or ocean). A rotating biological contactor is a type of secondary (biological) treatment process.
A heart–lung transplant is a procedure carried out to replace both failing heart and lungs in a single operation. Due to a shortage of suitable donors and because both heart and lung have to be transplanted together, it is a rare procedure; only about a hundred such transplants are performed each year in the United States.
Polishing is also an example. The main by-product from wastewater treatment plants is a type of sludge that is usually treated in the same or another wastewater treatment plant. [5]: Ch.14 Biogas can be another by-product if the process uses anaerobic treatment. Treated wastewater can be reused as reclaimed water. [6] The main purpose of ...
The activated sludge process is a type of biological wastewater treatment process for treating sewage or industrial wastewaters using aeration and a biological floc composed of bacteria and protozoa. It is one of several biological wastewater treatment alternatives in secondary treatment , which deals with the removal of biodegradable organic ...
A double-lung transplant, also known as a bilateral transplant, can be done either sequentially, en bloc, or simultaneously. Sequential is more common than en bloc. [3] The transplantation process starts after the donor lungs are inspected and the decision to transplant has been made.