Greywater treatment in airports using anaerobic filter followed by UV disinfection: an efficient and low cost alternative

Couto, Eduardo de Aguiar do; Calijuri, Maria Lúcia; Assemany, Paula Peixoto; Santiago, Aníbal da Fonseca; Lopes, Lucas Sampaio

doi:10.1016/j.jclepro.2014.07.065

Cited by 85 publications

(34 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Compared to these high-rate anaerobic reactors, the anaerobic filters (AFs) have drawn attention because of the following advantages [13][14][15]: (1) simple design configuration with low capital and operating costs, (2) excellent capability of high biomass retention with carriers, (3) stable operation, (4) greater tolerance to hydraulic loading rate and organic loading rate, and (5) low footprint. The potential of using AFs for treating wastewater have been well developed not only for industrial wastewater, but also for domestic wastewater [5,[16][17][18]. However, most of these studies focused on the effects of carriers, hydraulic retention time (HRT), and organic loading rate on the performance of AFs, and there were a few studies that focused on the effects of seasonal temperature [5,18].…”

Section: Introductionmentioning

confidence: 99%

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Lü

2017

Applied Sciences

View full text Add to dashboard Cite

Due to environmental burden and human health risks in developing countries, the treatment of decentralized domestic wastewater has been a matter of great concern in recent years. A novel pilot-scale three-stage anaerobic wool-felt filter reactor (AWFR) was designed to treat real decentralized domestic wastewater at seasonal temperature variations of 8 to 35 • C for 364 days. The results showed that the average chemical oxygen demand (COD) removal efficiencies of AWFR in summer and winter were 76 ± 7.2% and 52 ± 5.9% at one day and three days Hydraulic Retention Time (HRT), respectively. COD mass balance analysis demonstrated that even though COD removal was lower in winter, approximately 43.5% of influent COD was still converted to methane. High-throughput MiSeq sequencing analyses indicated that Methanosaeta, Methanobacterium, and Methanolinea were the predominant methanogens, whereas the genus Bacillus probably played important roles in fermentation processes throughout the whole operation period. The performance and microbial community composition study suggested the application potential of the AWFR system for the pretreatment of decentralized domestic wastewater.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Lü

2017

Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Indeed, the grey water characteristics are highly variable as influenced by factors such as lifestyle, social and cultural behaviour of residents, and water availability [12]. To study the effect of Sapodilla seeds concentration on the removal of turbidity and COD, the concentration was varied from 2.5 mg/L to 200 mg/L.…”

Section: Resultsmentioning

confidence: 99%

Decentralized Treatment of Grey Water by Natural Coagulants in the Presence of Coagulation Aid

Nautiyal¹,

Uliana²,

Raj³

et al. 2017

Proceedings of the 2nd World Congress on Civil, Structural, and Environmental Engineering

View full text Add to dashboard Cite

-The treatment and re-use of grey water is becoming increasingly relevant in order to augment available potable water in most developed countries and countries with increasing population. Grey water is the wastewater captured from hand basins, showers, baths, laundry tubs and kitchen sinks, excluding those from toilets or urinals. The study focused on the treatability of grey water using natural coagulants and synthetic coagulation aid. The grey water sample collected from the hostel was used for the study. The initial characteristics of the grey water were assessed using pH, TDS, Turbidity, COD and BOD and measured as 9.41, 1240 mg/l, 165 NTU, 3618 mg/l and 1543 mg/l respectively. The natural coagulant used for the study was freely available Sapodilla seeds, and the coagulation aid used was Alum. The coagulation with Sapodilla seeds proved to remove about 50% of turbidity, 30% COD for a seed concentration of 50 mg/L. The coagulation with coagulation aid alum removed 20% COD and 40% of turbidity. Addition of coagulation aid to the coagulant proved to remove 90% of turbidity and 70% COD for alum concentration of 10 mg/l. The present study focuses on the development of a decentralized grey water treatment unit comprised of natural coagulants to ensure the reuse standard.

show abstract

“…Additionally, the source of water used by water tankers is usually unknown and is often thought to be of inferior quality. [7] Filtration, sedimentation, disinfection Spain 14 [23] Rotating biological contactors Israel 6.4-15 [29] Filtration, sedimentation, aeration, disinfection India 2 [30] Constructed wetland Syria 3-7 [31] Fixed bed reactor, UV Brazil 5 Figure 1: Location of the study area.…”

Section: Study Areamentioning

confidence: 99%

Onsite Graywater Reclamation Towards Alleviating Water Shortages at the Household Level

Najm¹,

Hasan²,

Alameddine³

et al. 2017

WIT Transactions on Ecology and the Environment

View full text Add to dashboard Cite

Population growth and development, coupled with potential climate change impacts, are invariably associated with chronic water shortages particularly in arid and semi-arid regions. In this study, we evaluate the potential of using onsite graywater reclamation systems towards alleviating water shortages. For this purpose, we developed and administered a field questionnaire to assess the socioeconomic feasibility and public willingness towards the installation of such systems at the household level. Overall, 66% of the surveyed population approved of graywater reuse as compared to 48% who reported willingness to reuse wastewater. The results showed that acceptance of graywater reuse was a function of environmental awareness, household ownership, the age of the respondent, and access to alternative water sources. While graywater reuse can reduce water demand, its economic viability was found to be contingent on reforming the existing public water tariff structure. Under existing water use rates, the payback period for retrofitting a residence with a graywater reclamation system exceeded 30 years but went down to 9-12 years after accounting for water procurement from outside the network. The study concludes with a SWOT analysis and a management framework to integrate graywater reclamation as a source of water to supplement existing sources and help alleviate water shortages.

show abstract

Greywater treatment in airports using anaerobic filter followed by UV disinfection: an efficient and low cost alternative

Cited by 85 publications

References 37 publications

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Effect of Seasonal Temperature on the Performance and on the Microbial Community of a Novel AWFR for Decentralized Domestic Wastewater Pretreatment

Decentralized Treatment of Grey Water by Natural Coagulants in the Presence of Coagulation Aid

Onsite Graywater Reclamation Towards Alleviating Water Shortages at the Household Level

Contact Info

Product

Resources

About