Hi. I found an article that you might like: "To reduce world hunger, governments need to think beyond making food cheap" — https://theconversation.com/to-reduce-world-hunger-governments-need-to-think-beyond-making-food-cheap-142361
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https://news.yahoo.com/green-revolution-warning-not-blueprint-123415442.html?soc_src=social-sh&soc_trk=ma
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Wastewater management refers to the collection, treatment, and safe disposal or reuse of wastewater[1]. Wastewater, also known as sewage, contains impurities that need to be removed before it can be released into natural bodies of water or reused for various purposes[1].
The process of wastewater treatment involves several steps, including physical, biological, and chemical processes, to remove contaminants from the wastewater[1]. It typically includes the removal of solids, organic matter, nutrients (such as nitrogen and phosphorus), and harmful substances like pathogens and toxic chemicals[1].
Proper wastewater management is essential for protecting public health and the environment[1]. It helps prevent the contamination of surface water and groundwater sources, reducing the risk of waterborne diseases and ensuring the availability of clean water for various uses[1].
In addition to protecting human health, wastewater management plays a crucial role in sustainable development. By treating and reusing wastewater, valuable resources such as water, nutrients, and energy can be recovered[1]. This contributes to water conservation, reduces the strain on freshwater sources, and promotes a circular economy approach to resource management[1].
To optimize wastewater treatment and sanitation, it is important to consider the causes and impacts of the global water quality crisis, as well as implement innovative solutions[2]. Advances in technology have led to new trends in the wastewater management industry, such as digital platforms for waste management and the adoption of more efficient treatment systems[3].
Overall, wastewater management is a critical aspect of environmental stewardship, public health protection, and sustainable development[1][3].
Sources:
Wastewater treatment | Process, History, Importance, Systems | Encyclopedia Britannica
Wastewater management: 1. Introduction - GreenFacts
New Technology Trends in the Wastewater Management Industry - Forbes Wastewater treatment | Process, History, Importance, Systems | Encyclopedia Britannica Wastewater treatment | Process, History, Importance, Systems | Encyclopedia Britannica
Wastewater management refers to the collection, treatment, and safe disposal or reuse of wastewater[1]. Wastewater, also known as sewage, contains impurities that need to be removed before it can be released into natural bodies of water or reused for various purposes[1].
The process of wastewater treatment involves several steps, including physical, biological, and chemical processes, to remove contaminants from the wastewater[1]. It typically includes the removal of solids, organic matter, nutrients (such as nitrogen and phosphorus), and harmful substances like pathogens and toxic chemicals[1].
Proper wastewater management is essential for protecting public health and the environment[1]. It helps prevent the contamination of surface water and groundwater sources, reducing the risk of waterborne diseases and ensuring the availability of clean water for various uses[1].
In addition to protecting human health, wastewater management plays a crucial role in sustainable development. By treating and reusing wastewater, valuable resources such as water, nutrients, and energy can be recovered[1]. This contributes to water conservation, reduces the strain on freshwater sources, and promotes a circular economy approach to resource management[1].
To optimize wastewater treatment and sanitation, it is important to consider the causes and impacts of the global water quality crisis, as well as implement innovative solutions[2]. Advances in technology have led to new trends in the wastewater management industry, such as digital platforms for waste management and the adoption of more efficient treatment systems[3].
Overall, wastewater management is a critical aspect of environmental stewardship, public health protection, and sustainable development[1][3].
Sources:
Wastewater treatment | Process, History, Importance, Systems | Encyclopedia Britannica
Wastewater management: 1. Introduction - GreenFacts
New Technology Trends in the Wastewater Management Industry - Forbes
By
-T.Krishna
PRIMARY WASTEWATER TREATMENT
Presenter name:
KRISHNA T
Physical processes that remove non-homogenize solids and
Homogenize the remaining effluent.
The purpose of wastewater treatment is to remove the
contaminates from wastewater to that treated water can meet the
Acceptable quality standards.
• The quality standards usually depend upon whether water will be
reused or discharged into a receiving stream.
• These types of processes can be classified as
Physical
Chemical
Biological
• The primary treatment of wastewater involves two essential steps:
Pretreatment and sedimentation.
• Pretreatment is a crucial phase where large suspended and
floating solids are removed from the wastewater.
• Flow measurement and prechlorination are sometimes included in
the pretreatment process to prevent odors.
• Sedimentation follows the pretreatment and aids in further
separation of particles from the wastewater.• Efficient pretreatment ensures smooth operation in the subsequent treatment processes. • The removal of suspended solids during pretreatment prevents interference with later treatment stages. • Prechlorination is applied as part of pretreatment to avoid any potential odors in the following processes.
Pretreatment in Wastewater Treatment
•Pretreatment involves two key steps: screening and grit removal. •Screens come in various sizes and shapes, tailored to the characteristics of the solids to be removed. •Cleaning methods include manual and mechanical approaches.
Screening Process
• Fixed bar screens are commonly used in domestic wastewater treatment facilities. • Fixed bar screens consist of parallel metal bars. •Apertures range from 20-60 mm for coarse screens, and 10-20 mm for medium and fine screens.
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