Wastewater Treatment by Azolla: A review
Water is vital for humans and other living things, but water pollution has become a significant issue today. Various anthropogenic agricultural, industrial, and home activities produce multiple organic and inorganic substances dissolved or suspended in water. The goal of wastewater treatment i...
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Format: | Article |
Language: | English |
Published: |
University of Diyala
2022-06-01
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Series: | مجلة ديالى للعلوم الزراعية |
Subjects: | |
Online Access: | https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3479 |
Summary: | Water is vital for humans and other living things, but water pollution has become a
significant issue today. Various anthropogenic agricultural, industrial, and home activities
produce multiple organic and inorganic substances dissolved or suspended in water. The
goal of wastewater treatment is thus twofold: to reduce water pollution while also
maintaining the water supply to demand. It is based on the three 3 Rs: reduce, reuse, and
recycle. However, many of the methods used are ineffective or expensive. As a result,
water purification is a matter of great interest. Eco-friendly approaches are essential
among the new technologies and techniques tested in wastewater treatment. Aquatic
macrophytes treat water by accumulating harmful metals and nutrients. Like water filters,
a variety of aquatic floats can be suggested. Azolla is one among them, and it has been
used for decades. Researchers have discovered that Azolla can reduce Chemical Oxygen
Demand (COD), Biochemical Oxygen Demand (BOD), nitrogen, phosphorus, and heavy
metal concentrations in wastewater; therefore, it can be utilized for wastewater treatment.
Azolla also produces a lot of biomasses in wastewater. The use of Azolla in reducing
eutrophication in lakes and streams and other benefits is discussed in this study.
According to the literature, Azolla has a high growth rate, with a doubling date of 2-4
days. Azolla's cell wall is composed of pectin, which has a high affinity for the adsorption
of organic substances. Azolla serves as a "biofilter" during wastewater treatment in this
way. |
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ISSN: | 2073-9524 2310-8746 |