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Wastewater Management - Essay Example

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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…
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Wastewater Management

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). ... Read More
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