Search results
Results from the Tech24 Deals Content Network
Secondary treatment (mostly biological wastewater treatment) is the removal of biodegradable organic matter (in solution or suspension) from sewage or similar kinds of wastewater. [ 1]: 11 The aim is to achieve a certain degree of effluent quality in a sewage treatment plant suitable for the intended disposal or reuse option.
A rotating biological contactor is a type of secondary (biological) treatment process. It consists of a series of closely spaced, parallel discs mounted on a rotating shaft which is supported just above the surface of the wastewater. Microorganisms grow on the surface of the discs where biological degradation of the wastewater pollutants takes ...
A constructed wetland is an artificial wetland to treat sewage, greywater, stormwater runoff or industrial wastewater. [ 1][ 2] It may also be designed for land reclamation after mining, or as a mitigation step for natural areas lost to land development. Constructed wetlands are engineered systems that use the natural functions of vegetation ...
Additionally, AOPs can be used to treat effluent of secondary treated wastewater which is then called tertiary treatment. [6] The contaminant materials are largely converted into stable inorganic compounds such as water, carbon dioxide and salts, i.e. they undergo mineralization.
nh 4 + + no 2 − → n 2 + 2 h 2 o In some wastewater treatment plants , compounds such as methanol , ethanol , acetate , glycerin , or proprietary products are added to the wastewater to provide a carbon and electron source for denitrifying bacteria. [ 34 ]
Moving bed biofilm reactor. Moving bed biofilm reactor ( MBBR) is a type of wastewater treatment process that was first invented by Professor Hallvard Ødegaard at Norwegian University of Science and Technology in the late 1980s. [ 1] The process takes place in an aeration tank with plastic carriers that a biofilm can grow on.
EN 12566 - Small wastewater treatment systems for up to 50 PT refers to a set of European standards which specify the general requirements for packaged and/or site assembled wastewater treatment plants used for domestic wastewater treatment for up to 50 PT (population total). The standards consist of the following parts: [1] EN 12566-7: "Part 7 ...
Wastewater treatment. Wastewater treatment is a process which removes and eliminates contaminants from wastewater. It thus converts it into an effluent that can be returned to the water cycle. Once back in the water cycle, the effluent creates an acceptable impact on the environment. It is also possible to reuse it.