Affiliation:
1. Civil Engineering Department El‐Madina Higher Institute for Engineering and Technology 12588 Giza Egypt
2. Chemical Engineering Department College of Engineering Imam Mohammad Ibn Saud Islamic University (IMSIU) 13318 Riyadh Saudi Arabia
3. Chemical Engineering Department National Research Centre 12622 Giza Egypt
4. Civil Engineering Department College of Engineering Imam Mohammad Ibn Saud Islamic University (IMSIU) 13318 Riyadh Saudi Arabia
5. Civil Engineering Department Faculty of Engineering Aswan University 81542 Aswan Egypt
Abstract
AbstractThis study investigates a rice husk waste‐based filter (RHW‐BF) for the treatment of graywater (GW) and primary treated wastewater (PTW). The RHW‐BF comprises three layers: coarse sand, chemically modified rice husk (MRH), and gravel. Continuous runs (Run I, II, III) assessed chemical oxygen demand, total suspended solids, total dissolved solids, and turbidity removal. Run (I) for GW achieved high removal: 73.7 %, 73.4 %, 74.6 %, and 92.6 %. Subsequent runs showed decreasing efficiencies due to media saturation. Similar trends occurred for PTW, with Run (I) achieving significant removal: 70.3 %, 69.0 %, 44.2 %, and 90.2 %. MRH particles played a crucial role in sustainable pollutant removal. The study compares treated wastewater with the World Health Organization and Egyptian limits, demonstrating its suitability for reuse in irrigation, agriculture, or sewer discharge.
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3 articles.
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