Search results
Results from the WOW.Com Content Network
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.
To reduce light pollution caused by blue light, it is necessary to adopt lamps that, while maintaining the same photopic luminous flux, produce minimal scotopic light, and at the same time establish specific restrictions on the emitted wavelengths, particularly by shifting the spectral flux towards the blue side of the scotopic band (below 440 ...
Activated sludge tank at Beckton sewage treatment plant, UK.The white bubbles are due to the diffused air aeration system. 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.
Diffusion force caused by concentration gradient: = ( (/)). Electrostatic force caused by electric potential gradient: q ∇ φ {\displaystyle q\,\nabla \varphi } . Here R is the gas constant, T is the absolute temperature, n is the concentration, the equilibrium concentration is marked by a superscript "eq", q is the charge and φ is the ...
Nanofiltration and reverse osmosis membranes are mainly used for water purification purposes. Dense membranes are utilized for gas separations (removal of CO 2 from natural gas, separating N 2 from air, organic vapor removal from air or a nitrogen stream) and sometimes in membrane distillation. The later process helps in the separation of ...
The effective removal of oils and grease is dependent on the characteristics of the oil in terms of its suspension state and droplet size, which will in turn affect the choice of separator technology. Oil in industrial waste water may be free light oil, heavy oil, which tends to sink, and emulsified oil, often referred to as soluble oil.
The toxic waste cleared from the factory this week included five types of hazardous materials - including pesticide residue and "forever chemicals" left from its manufacturing process.
Bioslurping combines elements of bioventing and vacuum-enhanced pumping of free-product that is lighter than water (light non-aqueous phase liquid or LNAPL) to recover free-product from the groundwater and soil, and to bioremediate soils. The bioslurper system uses a “slurp” tube that extends into the free-product layer.