การผลิตวัสดุบำบัดน้ำบาดาลจากวัสดุเหลือใช้ทางการเกษตรและออกแบบ

Abstract

This research aimed to increase the value of agricultural waste material. By studying the adsorption efficiency of bamboo charcoal. Preparation and properties of metal oxide composite, calcium oxide composite from eggshell were studied. Including to develop a prototype underground water treatment system. The results of the research were as follows: Bamboo charcoal was effective in metal adsorption in alloy solutions of cadmium (Cd), chromium (Cr), lead (Pb), copper (Cu), zinc (Zn), iron (Fe) and manganese (Mn) under the conditions studied. The adsorption efficiency of bamboo charcoal with treated bamboo charcoal using KMnO4, commercial activated carbon and commercial activated carbon treated with KMnO4 were compared respectively. It was found that bamboo charcoal can be applied as a metal absorbent material in water without having to surface treatment with KMnO4 and the size of the charcoal has to be done. There are both large and small mixes. Since large bamboo charcoal cannot absorb Cd and Zn, but small bamboo charcoal is effective in absorbing all 7 types. For microbiological treatment of groundwater, Ca(OH)2 synthesized from eggshell waste by sonochemical techniques and high temperature calcination was used. It was found that Ca(OH)2 was a spherical particle with approximately 30 nm of size. The effective in inhibiting microorganisms of Escherichia coli and Staphylococcus aureus were 99.0% and 96.4%, respectively. For the Ca(OH)2 composited bamboo charcoal, the efficiency in inhibiting microorganisms was higher with increasing the amount of Ca(OH)2 adding and that tended to inhibit Escherichia coli better than ง Staphylococcus aureus. Then, it was tested in the underground water treatment system using 1.2% Ca (OH)2 / Charcoal. The result shown that the water after treatment was safe for human consumption, which is based on the World Health Organization (WHO) drinking water standards requirements. The results of the study of adding value of bamboo waste and Ca(OH)2 were applied as a prototype water treatment material for underground water treatment system that was developed.