Wastewater Management Secondary treatment involves the unique biological systems that are designed to remove suspended and dissolved solids through conversions that are biological to transform them into settleable form. Tertiary treatment is basically the polishing process that normally filters the treated water through passage of fine sand to remove the finely suspended solids…
Considering the sewer systems, earlier sewer systems were combined. They were designed to enable the collection of sanitary and storm wastewater in a single system. As such, they prevented flooding by warding off water from roofs and streets. As a result, early sanitarians concluded that the combined systems did provide adequate health protection. In recent times, this is known as Attached Growth Processes. Wastewater passes over a media along with air (oxygen). Methods like trickling filters and biotowers are effective in removing biodegradable organic wastewater materials. However effective these methods are, the passage of organic matter over oxygen releases some pollutants like poisonous gases like Ammonia and infectious micro-organisms that contaminate the water causing deadly diseases. There are advanced tertiary methods like the addition of chemical to primary clarifiers as a way of removing phosphorus and nitrogen. However, this is viewed as advanced treatment method hence employed when some specific wastewater constituents cannot be removed. An example of an advanced method is the Bardenpho-plant that involves the passage of Ammonia gas through several zones (Assano, 2007). ...
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“Wastewater Management Essay Example | Topics and Well Written Essays - 500 Words”, n.d. https://studentshare.net/other/18418-wastewater-management.
Upgrading Wastewater Treatment Facilities
The issue of wastewater treatment is a serious concern for municipals and city councils all over the world, especially the developing countries in Europe. The central focus of the new measures/regulation was protecting the environment from adverse effects of wastewater discharges from biodegradable and high-potential polluting industries.
Water Quality and Wastewater Management.
It is standard practice—especially in the Western part of the United States—to inject treated wastewater into the ground, where it is added to the groundwater table. Based on the fact of managing a large water district with a local city council member insisting upon secondary treated wastewater instead of tertiary treated wastewater, the following research is going to investigate the difference between the two types of wastewater.
This treated water can then be reused in irrigation, as supplement for drinking water or in recharging the groundwater aquifers or generally released to the environment. This process of reclaiming wastewater has been in place since historical times but just gained attention recently when demand for water grew as a result of advancements in technology, growth in population and rapid urbanization which has greatly stressed the natural water cycle.
The Earth, with its abundant and diverse life forms, including more than six billion human beings, at the 21st century is confronting a severe water crisis. A decade ago it was announced that by 2025 one third of the world population suffer this shortage, but that threshold has already been reached.
Water is abundant, but not all people realize that a large amount of water on Earth is not fresh water, and that water that is fit enough for drinking is not strategically placed for human consumption. Cooper reports that: “2.5 percent of Earth's water is fresh, and almost 99 percent of that small amount is locked up in the form of glaciers and permanent snow cover in the polar regions, or largely [nonrenewable] underground aquifers.” The main problem of water scarcity goes beyond the inadequate supply of freshwater for people at the right place and time, but includes the widespread inefficient use of existing limited water resources (Cooper).
The secondary wastewater treatment methods are employed after the primary physical treatment operations while the tertiary treatment units follow the secondary treatment. The tertiary treatment aims in the complete removal
Thus the energy and operational efficiency of the machines or equipment or even the treatment process design to meet the overall efficiency were not key areas in the planning and design of wastewater treatment plants. United
In the rural areas, inefficient and insufficient planning has also led to serious contamination of local watersheds.
From an overall perspective, Henze (2005) is of the opinion that wastewater management at all levels in rural
On the basis of recognized policy principles, research indicates that the presence of negative externalities often warrants government intervention in order to safeguard the welfare of the society by creating a succinct alignment of marginal social benefits and costs. This
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