Welcome to grade 7 mixtures and salutions. My group is working on WHIMIS. We are going to be puting infromation labs images videos links qustions.
4.WHIMIS for handlin
ESQUEMPEQUE-EN.jpg
g lab work, and disposing Sintific Prinsiples forIndustry water
Sewage is created by residential, institutional, and commercial and industrial establishments and includes household waste liquid from toilets baths showers kitchens sinks and so on that is disposed of sewers. In many areas, sewage also includes liquid waste from industry and commerce.
The separation and draining of household waste into greywater and blackwater is becoming more common in the developed world, with greywater being permitted to be used for watering plants or recycled for flushing toilets. Most sewage also includes some surface water from roofs or hard-standing areas and may include stormwater runoff.
Sewerage systems are capable of handling stormwater are known as combied systems or combined sewers. Such systems are usually avoided now since they complicate and thereby reduce the efficiency of sewage treatment plants owing to their seasonality. The wide variability in flow, affected by precipitation, also leads to a need to construct much larger, more expensive, treatment facilities than would otherwise be required. In addition, heavy storms that contribute greater excess flow than the treatment plant can handle may overwhelm the sewage treatment system, causing a spill or overflow. Modern sewered developments tend to be provided with separate storm drain systems for rainwater.
As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment heavy metals, organic compounds, animal waste, and oil and grease. See urban runoff.Some jurisdictions require stormwater to receive some level of treatment before being discharged directly into waterways. Examples of treatment processes used for stormwater include retention basins wetlands buried vaults with various kinds of media filters and vortex separators to remove coarse solids. Sanitary sewers are typically much smaller than storm sewers, and they are not designed to transport stormwater. In areas with basements, backups of raw sewage can occur if excessive stormwater is allowed into a sanitary sewer system.
Welcome to grade 7 mixtures and salutions. My group is working on WHIMIS. We are going to be puting infromation labs images videos links qustions.
4.WHIMIS for handlin
ESQUEMPEQUE-EN.jpg
g lab work, and disposing Sintific Prinsiples forIndustry water
Sewage is created by residential, institutional, and commercial and industrial establishments and includes household waste liquid from toilets baths showers kitchens sinks and so on that is disposed of sewers. In many areas, sewage also includes liquid waste from industry and commerce.
The separation and draining of household waste into greywater and blackwater is becoming more common in the developed world, with greywater being permitted to be used for watering plants or recycled for flushing toilets. Most sewage also includes some surface water from roofs or hard-standing areas and may include stormwater runoff.
Sewerage systems are capable of handling stormwater are known as combied systems or combined sewers. Such systems are usually avoided now since they complicate and thereby reduce the efficiency of sewage treatment plants owing to their seasonality. The wide variability in flow, affected by precipitation, also leads to a need to construct much larger, more expensive, treatment facilities than would otherwise be required. In addition, heavy storms that contribute greater excess flow than the treatment plant can handle may overwhelm the sewage treatment system, causing a spill or overflow. Modern sewered developments tend to be provided with separate storm drain systems for rainwater.
As rainfall travels over roofs and the ground, it may pick up various contaminants including soil particles and other sediment heavy metals, organic compounds, animal waste, and oil and grease. See urban runoff.Some jurisdictions require stormwater to receive some level of treatment before being discharged directly into waterways. Examples of treatment processes used for stormwater include retention basins wetlands buried vaults with various kinds of media filters and vortex separators to remove coarse solids. Sanitary sewers are typically much smaller than storm sewers, and they are not designed to transport stormwater. In areas with basements, backups of raw sewage can occur if excessive stormwater is allowed into a sanitary sewer system.
treatment,sewage. Prototype for seporator.Links http://en.wikipedia.org/wiki/Sewage_treatment\
http://www.youtube.com/v/gxgpK1EUZns?fs=1&hl=en_US