What are the different types of sewage?
Raw sewage, sewage sludge, and septic tank waste are all descriptions of sewage. Raw sewage is mostly water that contains excrement, industrial waste, and debris like sanitary towels, condoms, and plastic. Excreta is a major source of pathogenic microorganisms such as bacteria, viruses, and parasites. Sewage treatment reduces the amount of water in the system and removes debris, but it does not kill or remove all microorganisms.
Types of sewage
· Domestic Sewage
· Industrial Sewage
· Storm Sewage
Domestic sewage includes water and human excretions or other waterborne wastes that are incidental to the occupancy of a residential or non-residential building, but does not include manufacturing process water, wastewater from water softening equipment, commercial laundry wastewater, cooling water, blowdown from heating or cooling equipment, water from cellar or floor drains, or surface water from roofs, paved surfaces, or yard drains. Domestic sewage is often used water from homes and apartments, primarily from the kitchen, bathroom, and laundry. Dishwashing, garbage disposal, and, of course, baths and showers are all part of the mix.
Is there any problem with domestic sewage?
The various soaps and powders we use to clean our homes and laundry can occasionally contain harmful chemicals. When these chemicals are introduced into the sewage system, they have the potential to harm the health of all aquatic life. Microorganisms begin to decompose organic materials when sewage enters a lake or stream.
Industrial sewage is defined as a mix of liquid and water-borne wastes discharged from any industrial unit and resulting from any trade or process carried out in that unit. This includes waste from pre-treatment facilities as well as polluted cooling water.
This sewage does not meet the definitions of Domestic Sewage, but it can be treated at the District's sewage treatment works after adequate pre-treatment. It includes all trade waste generated by industrial plants or factories but excludes sanitary sewage from residences or hotels, restaurants, premises engaged solely in the sale, storage, or repair of goods, wares, eating establishments, business establishments, or merchandise, or bathrooms, sinks, or drinking fountains in industrial plants or factories.
Is there any problem with industrial sewage?
When toxic by-products enter the environment without being properly processed and disposed of, industrial sewage can occur. Hazardous materials that are dumped into the oceans or landfills can release toxins into the environment, disrupting habitats and causing harm to wildlife and humans.
A storm drain, storm sewer, surface water drain/sewer, or stormwater drain is a piece of infrastructure that is designed to drain excess rain and ground water from impervious surfaces such as car parks, parking lots, footpaths, paved streets, sidewalks, and roofs. Storm drains come in a variety of sizes and shapes, ranging from small residential dry wells to large municipal systems.
Drains collect water from street gutters on most highways, freeways, and other busy roads, as well as towns in flood-prone areas and coastal towns with frequent storms. Guttering from houses and buildings can also connect to storm drains. Because many storm drainage systems are gravity sewers that discharge untreated storm water into rivers or streams, dumping hazardous substances into the drains is unacceptable.
Storm drains are sometimes unable to handle the volume of rain that falls during heavy rains or storms. Flooding can occur as a result of clogged drains in basements and on the streets.
Many areas necessitate the installation of detention tanks on private property to temporarily hold runoff during heavy rains and restrict outlet flow to the public sewer. This reduces the possibility of overcrowding the public sewer. Stormwater (rainwater) and sewage are mixed in some storm drains, either intentionally or unintentionally in the case of combined sewers.
Is there any problem with storm sewage?
Storm drains not only allow pollution to flow directly into the ocean; when clogged in urban areas, they can also cause stormwater contamination and flooding, which can dispersed waterborne diseases such as cholera.
For more information, contact Netsol Water.