The Synergistic Effect of Zeolite, Date Stones Activated Carbon and Sand in the treatment of Greywater Including Kitchen Waste

Journal of applied sciences research

article

Ahmed M. Abou Elmagd¹ 

[1] Sanitary and Environmental Engineering, Faculty of Engineering at Shoubra, Benha University

关键词: Zeolite;    Date stones activated carbon;    Greywater;    Kitchen waste;   

DOI  :  10.22587/jasr.2019.15.4.3

学科分类：社会科学、人文和艺术（综合）

来源: AENSI

【 摘 要 】

The world's attention has turned to greywater recycling as an emerging strategy that is being implemented worldwide to supplement water resource portfolios. greywater recycling face two challenges, a very high cost to construct a separate greywater network and the high concentrations of pollutants as a result of including kitchen waste as a part of greywater, especially in our Arab world. This paper focused on the design of an in situ, cheap and easy to use graywater treatment plant by using of natural materials in filtration and without any chemicals addition. Pre-treatment by sedimentation and flotation were used to decrease organic loads before main filtration. Combined action of pre-treatment process succeeded to remove 45% of TSS, 37% of BOD and 35% of COD. Four different filtration medias were used;sand mixed with zeolite (SMZ), Date seeds activated carbon (DSAC), red Zeolite and black Zeolite. The best removal was achieved by SMZ, it was 89% for TSS, 83% for BOD and 79% of COD. Also, DSAC achieved the second-best removal efficiency. Black Zeolite and Red Zeolite achieved the third best removal efficiencies, they were almost having the same removal performance. For the best serial arrangement of these filtration media, three series were tested; series 1(SMZ+Zeolie), series 2 (SMZ+DSAC) and Series 3 (SMZ+DSAC+Zeolite). Results have demonstrated that Series 3 showed the best removal performance with up to 98%, 95%, 93% and 97% for TSS, BOD, COD, and turbidity respectively. Series 3 removal performance over time was then checked to measure the decrease in removal efficiency with time, In addition to predict how long time will be required for the filtration medias to reach the clogging and so backwash will be required then. The removal efficiency after 6 hours decreased by 6%, 5% and 6% for TSS, BOD and COD respectively, and the theoretical overall time required to reach blockage was 98 hr.

【 授权许可】

Unknown