Search results
Results from the WOW.Com Content Network
Salvia yangii, previously known as Perovskia atriplicifolia (/ p ə ˈ r ɒ v s k i ə æ t r ɪ p l ɪ s ɪ ˈ f oʊ l i ə /), and commonly called Russian sage, [2] is a flowering herbaceous perennial plant and subshrub. Although not previously a member of Salvia, the genus widely known as sage, since 2017 it has been included within them.
Freshwater environmental quality parameters are those chemical, physical and biological parameters that can be used to characterise a freshwater body. Because almost all water bodies are dynamic in their composition, the relevant quality parameters are typically expressed as a range of expected concentrations.
Wastewater quality indicators are laboratory test methodologies to assess suitability of wastewater for disposal, treatment or reuse. The main parameters in sewage that are measured to assess the sewage strength or quality as well as treatment options include: solids, indicators of organic matter, nitrogen, phosphorus, indicators of fecal ...
In 2004, water supply systems had a total capacity of 90 million cubic metres a day. The average residential water use was 248 litres per capita per day. [2] One quarter of the world's fresh surface and groundwater is located in Russia. The water utilities sector is one of the largest industries in Russia serving the entire Russian population.
Sewage treatment plant (a type of wastewater treatment plant) in La Crosse, Wisconsin. 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.
Environmental issues in Russia include pollution and erosion, and have impacts on people, wildlife and ecosystems.. Many of the issues have been attributed to policies that were made during the early Soviet Union, at a time when many officials felt that pollution control was an unnecessary hindrance to economic development and industrialization, and, even though numerous attempts were made by ...
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.
Salvia subgenus Perovskia is a group of species within the flowering plant genus Salvia, which prior 2017 were treated as the separate genus Perovskia. [2] Members of the group are native to southwestern and central Asia.