Back to Search
Start Over
Application of integrated ozone biological aerated filters and membrane filtration in water reuse of textile effluents
- Source :
- Bioresource Technology. 133:150-157
- Publication Year :
- 2013
- Publisher :
- Elsevier BV, 2013.
-
Abstract
- A combined process including integrated ozone-BAFs (ozone biological aerated filters) and membrane filtration was first applied for recycling textile effluents in a cotton textile mill with capacity of 5000 m 3 /d. Influent COD (chemical oxygen demand) in the range of 82–120 mg/L, BOD 5 (5-day biochemical oxygen demand) of 12.6–23.1 mg/L, suspended solids (SSs) of 38–52 mg/L and color of 32–64° were observed during operation. Outflows with COD ⩽ 45 mg/L, BOD 5 ⩽ 7.6 mg/L, SS ⩽ 15 mg/L, color ⩽ 8° were obtained after being decontaminated by ozone-BAF with ozone dosage of 20–25 mg/L. Besides, the average removal rates of PVA (polyvinyl alcohol) and UV 254 were 100% and 73.4% respectively. Permeate water produced by RO (reverse osmosis) could be reused in dyeing and finishing processes, while the RO concentrates could be discharged directly under local regulations with COD ⩽ 100 mg/L, BOD 5 ⩽ 21 mg/L, SS ⩽ 52 mg/L, color ⩽ 32°. Results showed that the combined process could guarantee water reuse with high quality, and solve the problem of RO concentrate disposal.
- Subjects :
- Biochemical oxygen demand
Osmosis
Environmental Engineering
Ozone
Bioengineering
Wastewater
law.invention
chemistry.chemical_compound
law
Water Quality
Recycling
Reverse osmosis
Waste Management and Disposal
Filtration
Biological Oxygen Demand Analysis
Suspended solids
Renewable Energy, Sustainability and the Environment
Chemistry
Textiles
Chemical oxygen demand
Environmental engineering
Membranes, Artificial
General Medicine
Aerobiosis
Biodegradation, Environmental
Costs and Cost Analysis
Dyeing
Aeration
Water Pollutants, Chemical
Subjects
Details
- ISSN :
- 09608524
- Volume :
- 133
- Database :
- OpenAIRE
- Journal :
- Bioresource Technology
- Accession number :
- edsair.doi.dedup.....134afbcf74530e1f302698ff5d0b1555