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A cost effective and environmentally friendly stormwater treatment method: The use of wood fly ash and H2O2
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
2011 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

This current study is a lab-scale investigation focused on the treatment of stormwater runoff generated in wood-storage areas. The main target constituents of the proposed treatment were: metals (Cu, Cd, Co, V, Pb, Zn, Ni, Cr, Fe, As), COD, TOC, Phenols, and color. The method implemented for this project follows the main concept of using low-cost and environmentally friendly technologies and had as main steps the use of a by-product of wood-based industries - wood fly ashes as sorbents - followed by oxidation with H2O2 (Hydrogen Peroxide). The results obtained during this investigation were vey promising since satisfactory removal % was achieved. Removal rates of 98.5%, 86%, 89.6%, 79.6% were achieved for color, chemical oxygen demand (COD), total organic carbon (TOC) and phenols respectively. Furthermore a decrease in metals concentrations was also observed with the exception of chromium. The study showed that for 300 ml storm water, optimum conditions were with 7g wood fly ash, 5 hours time reaction, pH≈11.46 and 150 μl of a 30% H2O2 solution in a room temperature. To conclude it can be stated that the use of a by-product from wood industry to treat contaminated water from the same sector, following the concept of a closed-loop system, is promising and possible. However further studies need to be conducted in order to evaluate such system in scaled-up conditions.

Place, publisher, year, edition, pages
2011. , 30 p.
Keyword [en]
wood fly ash, storm water, hydrogen peroxide, water treatment
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:lnu:diva-12204OAI: oai:DiVA.org:lnu-12204DiVA: diva2:421262
Subject / course
Environmental Science
Uppsok
Life Earth Science
Supervisors
Examiners
Available from: 2011-06-08 Created: 2011-06-08 Last updated: 2011-06-08Bibliographically approved

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Aboubi, Fadoua
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