Greywater treatment in aerobic bio-reactor with macropore mesh filters

Khuntia, Himanshu Kumar; Hameed, Sadiya; Janardhana, Naveen; Chanakya, H. N.

doi:10.1016/j.jwpe.2019.02.013

Cited by 11 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, various simple to advanced treatment systems, such as biofilter, constructed wetland, and different physicochemical processes (e.g., flocculation, membrane, etc.) have been investigated for greywater [8][9][10][11][12][13]. Treatment of greywater in biological treatment processes is specifically challenging due to the presence of surfactants [14].…”

Section: Introductionmentioning

confidence: 99%

“…Among various treatment methods, passive treatment systems like biofilter, constructed wetland, etc., have been reported as a simple and technically efficient method 2 of 11 for greywater treatment [8][9][10][11][12][13]. For instance, a recent study [17] reported a granular activated carbon (GAC) biofilter that could remove 94% chemical oxygen demand (COD) from greywater for a hydraulic retention time (HRT) of 2.4 h. Interestingly, energy recovery potential from greywater with anaerobic biotechnologies has been rarely investigated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Coupling Microbial Electrolysis Cell and Activated Carbon Biofilter for Source-Separated Greywater Treatment

2021

View full text Add to dashboard Cite

Reclamation and reuse of wastewater are increasingly viewed as a pragmatic tool for water conservation. Greywater, which includes water from baths, washing machines, dishwashers, and kitchen sinks, is a dilute wastewater stream, making it an attractive stream for extraction of non-potable water. However, most previous studies primarily focused on passively aerated biological and physicochemical treatment processes for greywater treatment. Here, we investigated an integrated process of a microbial electrochemical cell (MEC) followed by granular activated carbon (GAC) biofilter for greywater treatment. The integrated system could achieve 99.3% removal of total chemical oxygen demand (TCOD) and 98.7% removal of the anionic surfactants (linear alkylbenzene sulphonates) from synthetic greywater at a total hydraulic residence time (HRT) of 25 h (1 day for MEC and 1 h for GAC biofilter). For one-day HRT, the maximum peak volumetric current density from MEC was 0.65 A/m3, which was comparable to that achieved at four-day HRT (0.66 A/m3). The adsorption by GAC was identified as a key mechanism for the removal of organics and surfactants. In addition, recirculation of liquid within the GAC biofilter was identified as a critical factor in achieving high-rate treatment. Although results indicated that GAC biofilter could be a standalone process for greywater, MEC can provide an opportunity for potential energy recovery from greywater. However, further studies should focus on developing high-rate MECs with higher energy recovery potential for practical operation.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Coupling Microbial Electrolysis Cell and Activated Carbon Biofilter for Source-Separated Greywater Treatment

2021

View full text Add to dashboard Cite

show abstract

“…This last feature allows removing contaminants with a simple treatment system chain, unlike other WW, making the onsite treatment of water possible [5]. In recent years, several types of processes have been tested on GW, such as filtration [37,38], membrane bioreactors [39,40], rotating biological contactors [35], sequencing batch reactor [41,42], up-flow anaerobic sludge blanket [43,44] and constructed wetlands (CW) [45,46].…”

Section: Introductionmentioning

confidence: 99%

Horizontal Flow Constructed Wetland for Greywater Treatment and Reuse: An Experimental Case

Collivignarelli

Miino

Gomez

et al. 2020

IJERPH

View full text Add to dashboard Cite

In the coming years, water stress is destined to worsen considering that the consumption of water is expected to increase significantly, and climate change is expected to become more evident. Greywater (GW) has been studied as an alternative water source in arid and semiarid zones. Although there is no single optimal solution in order to treat GW, constructed wetlands proved to be effective. In this paper, the results of the treatment of a real GW by a horizontal flow constructed wetland (HFCW) for more than four months are shown. In the preliminary laboratory-scale plant, Phragmites australis, Carex oshimensis and Cyperus papyrus were tested separately and showed very similar results. In the second phase, pilot-scale tests were conducted to confirm the performance at a larger scale and evaluate the influence of hydraulic retention time, obtaining very high removal yields on turbidity (>92%), total suspended solids (TSS) (>85%), chemical oxygen demand (COD) (>89%), and five-day biological oxygen demand (BOD5) (>88%). Based on the results of the pilot-scale HFCW, a comparison with international recommendations by World Health Organization and European Union is discussed.

show abstract

“…Greywater reuse and recycling can be the essential practice to decrease the demand for drinking water. Reuse of treated greywater can save approximately 50 L of potable water in a common household every single day [4], [5]. Greywater is the discharge that is created by the kitchen sinks, showers, baths, bathroom sinks, and laundry.…”

Section: Introductionmentioning

confidence: 99%

Integrated Anaerobic-Aerobic Sequencing Batch Reactors for Unrestricted Reuse Using Greywater Treatment

Pragada¹,

Thalla²

2021

IJESD

View full text Add to dashboard Cite

This work is carried out to evaluate the efficiency of the pilot scale integrated scheme which comprises of an Anaerobic Sequence Batch Reactor (AnSBR) reactor, Aerobic Sequence Batch Reactor (ASBR), and sand filter for the elimination of organic matter and nutrient in synthetic greywater. The treatment effectiveness of the pilot plant was identified based on its pollutant removal efficiency for 12 months. The AnSBR removes 49.64, 64.24, 55.35, 87.82, 54.36, 32.73, 72.61, 34.88, and 72.11% of Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), Total Nitrogen (TN), anionic surfactant, Total Phosphorous (TP), Ammonium Nitrogen (NH4+-N), Total Suspended Solids (TSS), Nitrate Nitrogen (NO3--N) and sulphates, respectively. Moreover, the removal efficiencies are improved to 84.27, 86.04, 80.8, 95.13, 80.55, 90.23, 72.98, and 75.45%, respectively, in the ASBR with an additional aeration period. The removal efficiencies of COD, BOD, TN, anionic surfactant, TP, TSS, NH4+-N, NO3--N, and sulphates have been improved progressively to 89.12, 94.9, 85.15, 99, 86.98, 88.54, 93.52, 94.89, and 80.49%, respectively in the sand filter. In tracer studies, that a total of 29.3% of the salt has been remained in the reactor which suggests a good deal of salt of the integrated system. Furthermore, this hydrodynamic study discloses a moderately low volume (30.3%) for the integrated system with the mean residence time is lesser than theoretical hydraulic residential time. Based on these findings, it is evident that the integrated anaerobic-aerobic system bounded with the sand filter process accomplishes the achievement of efficiency.

show abstract

Greywater treatment in aerobic bio-reactor with macropore mesh filters

Cited by 11 publications

References 30 publications

Coupling Microbial Electrolysis Cell and Activated Carbon Biofilter for Source-Separated Greywater Treatment

Coupling Microbial Electrolysis Cell and Activated Carbon Biofilter for Source-Separated Greywater Treatment

Horizontal Flow Constructed Wetland for Greywater Treatment and Reuse: An Experimental Case

Integrated Anaerobic-Aerobic Sequencing Batch Reactors for Unrestricted Reuse Using Greywater Treatment

Contact Info

Product

Resources

About