Experimental Investigation of An Industrial Wastewater Treatment Unit Using Multi Filter Hybrid with Parabolic Trough Solar Concentrator

El-Awady, M. Hamdy; El-Ghetany, Hamdy

doi:10.21608/ejchem.2023.196385.7643

Experimental Investigation of An Industrial Wastewater Treatment Unit Using Multi Filter Hybrid with Parabolic Trough Solar Concentrator

Document Type : Original Article

Authors

¹ Water Pollution Research Department, National Research Centre, P.O. Box 12622, El-Buhoth St., Dokki, Cairo, Egypt

² Solar Energy Department, National Research Centre, Dokki,12622, Giza, Egypt;

10.21608/ejchem.2023.196385.7643

Abstract

Due to the shortage of fresh water in residential, agricultural and industrial sectors, wastewater treatment (WWT) should be applied for reuse purposes. This study focused on innovative hybrid system for the industrial WWT and recycling using parabolic trough-solar collector (PTC) to treat WW by photo-catalytic oxidation enhanced direct sun light. The system consists of two pillars; first is six consequent filter units. They filled with; gravel; course sand; fine sand; natural coal; activated carbon; and zeolite. Filters were connected in-series and in-parallel. Filters were designed to remove solids, soluble pollutants and heavy metals. PTC is acting as photo-catalytic degradation of the persistent pollutants. It consists of a metallic parabolic steel structure with reflective surface and receiving tube. PTC lets water to be exposed to the solar radiation to destruct the residual contaminants in the final outlet. To optimize system efficiency and to maximize water exposure to solar radiation, a 50% nano TiO2 emulsion was coated as photo-catalytic degradation enhanced with sun light. Solar exposure time was increased by coating 20 glass circular baffles to lengthen the water path. The system achieved noticeable efficiency of the treatment stages either for physically and chemically steps in the range of solar radiation dose.

Keywords