A system for rapid and inexpensive treatment of sewage using the weed <i>Eclipta prostrata</i> in SHEFROL<sup>®</sup> bioreactor

Abbasi, S. A.; Tauseef, S. M.

doi:10.1111/wej.12355

Cited by 8 publications

(2 citation statements)

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“…Simulation results revealed that a high concentration of organic carbon will reduce oxygen migration in HF aerated wetland systems, thus reducing the treatment effect. Abbasi and Tauseef (2018) [18] reported a novel plate-flow-root horizontal bioreactor (SHEFROL (R)) on their own earlier development for the first time, hinting that the use of artemisoma annua can be used to treat wastewater quickly and efficiently. In addition to extensive primary and secondary treatments in the removal of suspended solids, chemical oxygen demand, and biological oxygen demand, E. prostrata is capable of substantially removing excess nutrients and heavy metals such as copper, nickel, and manganese leading to eutrophication (nitrogen and phosphorus); the system is expected to yield significant results in sewage treatment.…”

Section: Municipal Sewage Treatment Methodsmentioning

confidence: 99%

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

et al. 2020

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China’s economy in recent decades has developed at a very rapid speed, as evidenced by its GDP jumping to second place in the world. Although utilization of domestic water resources has helped spur economic development, sewage discharge as an undesirable output has unfortunately caused many negative effects on human health, causing concern from all walks of life. Therefore, governments in China at all levels are committed to urban sewage treatment policies in order to reduce the negative impact of water pollution on society. While most existing studies have targeted the macro-level modes of economic development and environmental pollution, their selection of research objects is too narrow by failing to adequately consider China's water pollution and the consequential national health crisis. This study takes cities in 30 provinces of China as the research objects and applies various influencing factors of urban wastewater treatment and health (as two stages) to the modified two-stage dynamic Slacks-Based Measures (SBM) Data Envelopment Analysis (DEA) model. The results reveal that the overall efficiency of each province is increasing and that the efficiency of the wastewater treatment stage is greater, thus contributing to overall efficiency. Conversely, the health stage’s efficiency is far lower than the wastewater treatment stage’s efficiency, which has a notably adverse effect on overall efficiency. In addition, most input-output variables need much improvement. Based on the findings herein, we offer specific suggestions to each province for improving sewage treatment capacity, the level of medical care, and the quality of national health.

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Section: Municipal Sewage Treatment Methodsmentioning

confidence: 99%

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

et al. 2020

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“…On the basis of a series of studies [36,[38][39][40][41][42][43][44], employing different species of macrophytes which, in their natural habitats, exist either as free floating weeds or marshy plants rooted in soil, or as terrestrial species, the efficacy of the SHEFROL ® technology has been demonstrated. It has been seen that besides very efficient secondary treatment, which its main role, SHEFROL, also accomplishes significant levels of primary and tertiary treatment.…”

Section: The Potential Of Shefrol ® Technologymentioning

confidence: 99%

Feasibility of a Novel (SHEFROL) Technology in Pre-Treating Eatery Wastewater at Pilot Scale

Abbasi

Patnaik

Abbasi

et al. 2022

Water

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The wastewater ensuing from public eateries is higher in its chemical and biological oxygen demand (COD and BOD) as also its oil, grease, and protein content than sewage. For this reason such wastewater is much harder to treat; its content of fats, proteinaceous material, and xenobiotics mounting major challenges. But in most of the developing world about 80% of such wastewater is discharged untreated and the remaining is mixed with sewage going to the treatment plants. This happens due to the prohibitively high cost of treatment that is entailed if these wastewaters are to be treated by conventional activated sludge processes (ASPs) or a combination of anaerobic digestion and ASPs. The practice of allowing eatery wastewater to join sewage en route sewage treatment plants increases the load on the latter, especially due to the high fat and protein content of the former. The present work describes attempts to use the recently developed and patented SHEFROL® technology in affecting treatment of wastewater coming from a typical eatery. After establishing feasibility at bench scale, the process was tested in a case study at pilot plant scale for treating 12,000 litres/day (LPD) of wastewater being generated by the eateries situated in the campus of Pondicherry University, India. The capacity of the pilot plant was then expanded to 30,000 LPD. Despite operating the units at a very low hydraulic retention time (HRT) of 2 ± 0.5 h, due to the limitations of land availability, which translates to a rate about three times faster than a typical ASP, over 50% removal of COD and BOD, and similarly substantial removal of other pollutants was consistently achieved. Given that the SHEFROL units can be set up at a negligible cost, the findings indicate that SHEFROL technology can be used to significantly yet inexpensively pre-treat eatery wastewaters before either sending them for further treatment to conventional sewage treatment plants, higher-end SHEFROL units, or discharging them directly if neither of the other two options is available.

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Salvinia (Salvinia Molesta) and Water Hyacinth (Eichhorniacrassipes): Two Pernicious Aquatic Weeds with High Potential in Phytoremediation

Tabassum-Abbasi

Patnaik

Abbasi

2021

Advances in Sustainable Development

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A system for rapid and inexpensive treatment of sewage using the weed Eclipta prostrata in SHEFROL^® bioreactor

Cited by 8 publications

References 70 publications

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

Feasibility of a Novel (SHEFROL) Technology in Pre-Treating Eatery Wastewater at Pilot Scale

Salvinia (Salvinia Molesta) and Water Hyacinth (Eichhorniacrassipes): Two Pernicious Aquatic Weeds with High Potential in Phytoremediation

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A system for rapid and inexpensive treatment of sewage using the weed Eclipta prostrata in SHEFROL® bioreactor

Cited by 8 publications

References 70 publications

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

Feasibility of a Novel (SHEFROL) Technology in Pre-Treating Eatery Wastewater at Pilot Scale

Salvinia (Salvinia Molesta) and Water Hyacinth (Eichhorniacrassipes): Two Pernicious Aquatic Weeds with High Potential in Phytoremediation

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A system for rapid and inexpensive treatment of sewage using the weed Eclipta prostrata in SHEFROL^® bioreactor