Integrated wastewater management by reuse and recycling in a textile industry : a case study in Thailand | |
| Author | Javed, Muhammad Ramzan |
| Call Number | AIT Thesis no. WM-00-19 |
| Subject(s) | Water reuse--Thailand Recycling (Waste, etc.)--Thailand |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Abstract | Increasing stringent environmental legislation, efficiency and diversity of treatment and management techniques for wastewater have made recycling and reuse feasible in many industrial processes. Wastewater management by integrating all available techniques was studied for reuse and recycling in a textile industry. Cotton and silk fabrics were main products of the selected industry. To achieve objectives of reuse and recycling, the approach was divided in to five parts: inplant water consumption evaluation, segregation study, treatability study, evaluating efficiency of existing WWTP and advanced treatment for final effluent. Segregation study was performed by inplant survey. Treatability of dye wastewater by ozonation, chemical and nanofiltration was studied Efficiency of existing WWTP for COD and BOD removal was assessed. Treatment study for final effluent for TDS and color removal by nanofiltratrion and chemical treatment was performed. Analyses show the possibilities to conserve and optimize water consumption up to 30% in the production processes. Segregation study shows that up to 120 m3 /d wastewater from less polluted streams can be recycled. The quantity of highly polluted non biodegradable wastewater streams which can be treated separately by chemical treatment is about 250 m3 /d. Treatability study for dye wastewater shows that color removal up to 80-98% can be achieved by chemical and nanofiltration treatment and separate treatment for color removal is much economical than combine treatment for.whole wastewater. Efficiency of existing WWTP can be easily improved by process control. Nanofiltration and Jelfloc chemical for TDS removal of that particular final effluent are not efficient, so far. |
| Year | 2001 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Water Engineering and Management (WM) |
| Chairperson(s) | Trankler, Josef |
| Examination Committee(s) | Visvanathan, C. ;Fukushi Kensuke , |
| Scholarship Donor(s) | The German Academic Exchange Service (DAAD) |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2001 |