Wastewater Problems That Need Remediation

February 21, 2011 by · Leave a Comment
Filed under: Blog 

In order to stay abreast with the growing problem of wastewater disposal, there are more and more methods that have been developed to treat it. Nowadays, wastewater is never just dumped, not if it can be helped anyway. For as long as it is treatable, wastewater is continuously recycled. One of the more known ways of wastewater treatment is through remediation. Remediation is the treatment process that removes pollution or contaminants from groundwater through the use of microorganisms, or rather, the introduction of microorganisms into the water. There are multiple wastewater problems that have better effects with remediation than any other wastewater treatment method. Below, are just a few examples.

1. Iron and Steel Industries wastewater-  The increasing need for more iron and steel have given way to the production of more iron, steel and other metals. Part of the production of iron from iron ores requires powerful reduction reactions in blast furnaces. The cooling waters that are used to cool the iron are then filled with chemicals like cyanide and ammonia,in the process. When coal is produced, water used to cool it down can also release toxic by-products into the wastewater. When this water goes down and mixes into the general water stream untreated, it may contaminate the water with many complex organic compounds known as polycyclic aromatic carbons or PAHS. PAHs can cause all sorts of complications, so remediation is definitely required for the waste from these industries.

2. Mines and quarries- Mines and quarries used to be located miles away from residential areas, but these days, more and more people live and work in mining towns. The wastewater that is gathered from mining are a result from the washing and grading processes that happen in the mines, or from rainwater dropping down on exposed rock areas. Because of the exposure, the wastewater from these areas normally has traces of surfactants and haematite. Other dangerous chemicals that have been found include certain oils and hydraulic oils. Again, remediation has been found to be the most effective method applied so that these contaminants are removed and the water in the area is made potable again.

3. Food industry waste- in the effort to keep the food that we eat free of contmainants, agricultural and food operations, in turn, get rid of a lot of wastewater in preparing the food. The wastewater from this industry have its own set of characteristics. This kind of wastewater may be biodegradable and non toxic but high amounts of biochemical oxygen demand and suspended solids can still be found in their samples. Particulate matter and surfactants are other contaminants that have also been reported to be found in the water. A special kind of remediation can successfully remove the contaminants from food industry wastewater.

Everywhere we are, there is always that chance of being exposed or taking in wastewater. In a way, we have to be thankful to wastewater techniques such as remediation have been refined in order to constantly protect us from wastewater contamination!

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