close
test_template

Electrochemical Method for Wastewater Treatment

download print

About this sample

About this sample

close

Words: 510 |

Page: 1|

3 min read

Published: Jun 20, 2019

Words: 510|Page: 1|3 min read

Published: Jun 20, 2019

Improving or maintaining the quality of freshwater available for consumption has become a crucial issue in the last decades, mainly due to population growth, urban development, increased industrialization and the unsustainable use of natural water resources. In this way the water resources are exposed to a large amount of high number of synthetic organic pollutants such as industrial chemicals, pesticides, dyes, and pharmaceuticals and personal care products that are released daily into them via direct discharge of wastewater. Most of these pollutants are persistent and refractory to the conventional water/wastewater treatment techniques and pass through sewage treatment plants partial modified or unmodified. Contamination of the environment and especially of surface and ground water by toxic/persistent pollutants became special concern because water quality has a great impact on the well-being of human and also of all the living beings, since certain pollutants have capacity, even in very small concentration, to drastically harm living organisms. Therefore, the protection of the available resources by prevention strategy and the control of their quality are regarded as important issues of the current century. The prevention becomes the most important action regarding the protection of natural water resources. Effective protection of natural water resources is possible only through treatment of wastewater effluents before their injection into natural water bodies. Therefore, the development of effective, economically, and ecologically compatible treatment processes is of great importance. To remove toxic and biorecalcitrant organic pollutants from water, treatment techniques based on a powerful oxidant, namely hydroxyl radicals (OH), are developed during last decades. These techniques are commonly called “advanced oxidation processes” (AOPs) and they are capable of non-selective degradation/combustion of pollutants via hydroxylation or dehydroxylation until their total mineralization to carbon dioxide, water and inorganic ions or until formation of non-toxic and biodegradable small molecules. Among these techniques, electrochemical advanced oxidation processes have proved to have high efficiency with advantages such as versatility, high energy efficiency, amenability of automation, and safety because it operates at mild conditions with limited use of chemicals.

'Why Violent Video Games Shouldn't Be Banned'?

AOPs are known for their high versatility and environmental compatibility for degradation of biorefractory pollutants. However, they are less viable for treatment of large volumes of low concentration pollutants. Further, AOPs processes generate several toxic intermediates which at times are more harmful than the parent pollutants, therefore suggesting the need for complementary treatments to remove such toxic by-products.

Combined membrane filtration – AOPs provides such complementary effect because the AOPs treatment assist in eliminating membrane fouling and remediation of organics in the concentrate via oxidation of the foulants, dissolve organic matters and organic compounds in the concentrate. Moreover membrane filtration not only concentrates the pollutants to the level that can be efficiently treated by AOPs but also confines/retains the toxic intermediates within the membrane to ensure prolonged contact with the oxidants. This exciting transformative technology combines a filtration stage and an advanced oxidation step as a treatment unit for separation and degradation of pollutants. AOPs can be integrated with membrane filtration as: pretreatment stage; post-treatment stage or one pot/hybrid process where the system concurrently operates as separation and oxidation units.

Cite this Essay

Electrochemical Method For Wastewater Treatment. (2019, Jun 12). GradesFixer. Retrieved March 29, 2024, from https://gradesfixer.com/free-essay-examples/electrochemical-method-for-wastewater-treatment/
“Electrochemical Method For Wastewater Treatment.” GradesFixer, 12 Jun. 2019, gradesfixer.com/free-essay-examples/electrochemical-method-for-wastewater-treatment/
Electrochemical Method For Wastewater Treatment. [online]. Available at: <https://gradesfixer.com/free-essay-examples/electrochemical-method-for-wastewater-treatment/> [Accessed 29 Mar. 2024].
Electrochemical Method For Wastewater Treatment [Internet]. GradesFixer. 2019 Jun 12 [cited 2024 Mar 29]. Available from: https://gradesfixer.com/free-essay-examples/electrochemical-method-for-wastewater-treatment/
copy
Keep in mind: This sample was shared by another student.
  • 450+ experts on 30 subjects ready to help
  • Custom essay delivered in as few as 3 hours
Write my essay

Still can’t find what you need?

Browse our vast selection of original essay samples, each expertly formatted and styled

close

Where do you want us to send this sample?

    By clicking “Continue”, you agree to our terms of service and privacy policy.

    close

    Be careful. This essay is not unique

    This essay was donated by a student and is likely to have been used and submitted before

    Download this Sample

    Free samples may contain mistakes and not unique parts

    close

    Sorry, we could not paraphrase this essay. Our professional writers can rewrite it and get you a unique paper.

    close

    Thanks!

    Please check your inbox.

    We can write you a custom essay that will follow your exact instructions and meet the deadlines. Let's fix your grades together!

    clock-banner-side

    Get Your
    Personalized Essay in 3 Hours or Less!

    exit-popup-close
    We can help you get a better grade and deliver your task on time!
    • Instructions Followed To The Letter
    • Deadlines Met At Every Stage
    • Unique And Plagiarism Free
    Order your paper now