Household septic tank effluent treatment with woven fiber microfiltration membrane (WFMF) for water reuse | |
| Author | Sahak, Kawoon |
| Call Number | AIT Thesis no.EV-18-14 |
| Subject(s) | Septic tanks Water--Purification Water reuse--Enivronmental aspects |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science in Environmental Engi neering and Management |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. EV-18-14 |
| Abstract | Kabul is the most populated city in Afghanistan. The rapi d population growth along with urbanization has significant impacts on all aspects of environment in last 15 years. Wastewater and sanitation are the two major problems in Kabul city. Most of the u ntreated wastewater from different sources is discharged in to the nearest water bodies . Insufficiency in wastewater treatment put significant impacts on surface and groundwater res ources. In Kabul city from all wastewater generated only 10 percent is partially treated and the remaining is discharged with out any ba sic treatment . Currently, Kabul city has got some decentralized wastewater treatment systems (DEWATS) which were implemented by BORDA . This research was conducted to evaluate the applicability of woven fiber microfiltration membrane to treat the househ old septic tank effluent for water reuse. WFMF membrane was made from Polyester which has a dead - end outside - in flat sheet configuration. The pore size of the membrane was 1 – 3 {u1D707} m and the surface area is 1 m 2 . In this study, WFMF membrane was operated wi th three different fluxes which were 5 LMH , 7.5 LMH and 10 LMH. WFMF membrane results revealed that the removal efficiency at 5 LMH for ,TS TSS, Turbidity, COD, BOD 5 , t otal and fecal Coliform were 65.4 %, 79.3 %, 64.5 %, 44 .6 %, 43.1 , 99. 6% and 98% respec tively, while the removal efficiencies we re 80 .4.9%, 85.8 % 70.5 %, 49.5 %, 46.3 % , 99 % and 98.4% in 7.5 LMH. T he effluent removal efficiencies at 10 LMH were 58 %, 6 7.6 , 57 .4 %, 31.8 %, 29.5 %, 98.4% and 97.9% accordingly. Finally , this research found tha t septic tank treats solid, organic matter and coliform impurities before discharging to the environme nt and WFMF system was developed for post treatment of septic tank effluent. In this study, 7.5 LMH showed better performance to treat septic tank effluen t and the permeate water quality is appropriate for irrigation purposes |
| Year | 2018 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. EV-18-14 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Environmental Engineering (EV) |
| Chairperson(s) | Chettiyappan Visvanathan; |
| Examination Committee(s) | AIT Thesis no.EV-18-14;Thammarat Koottatep; |
| Scholarship Donor(s) | Ministry of Higher Education (MoHE),Afghanistan;AIT Fellowship; |
| Degree | Thesis (M. Sc.) - Asian Institute of Technology, 2018 |