The effect of hydraulic retention time in onsite wastewater treatment and removal of pharmaceuticals, hormones and phenolic utility substances

Ejhed, Heléne; Fang, Jingzhong; Hansen, K.; Graae, L.; Rahmberg, Magnus; Magnér, Jörgen; Dorgeloh, Elmar; Płaza, Grażyna

doi:10.1016/j.scitotenv.2017.11.011

Cited by 68 publications

(22 citation statements)

References 39 publications

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“…Data Several comparisons have been conducted between the micropollutant removal performance of centralized and decentralized WWTPs. [31][32][33] In addition to online monitoring, data from annual control measurements are collected. [34][35][36] Overviews are available of types of OSTs in operation 37 and the faults of OSTs 2,38 .…”

Section: 5mentioning

confidence: 99%

Benchmarking soft-sensors for remote monitoring of on-site wastewater treatment plants

Schneider¹,

Furrer²,

Sprenger³

et al. 2019

Preprint

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On-site wastewater treatment plants are usually unattended, so undetected failures often lead to prolonged periods of reduced performance. To stabilize the good performance of unattended plants, soft-sensors could expose faults and failures to the operator. In a previous study, we developed soft-sensors and showed that soft-sensors with data from unmaintained physical sensors can be as accurate as soft-sensors with data from maintained ones. The quantities sensed were pH and dissolved oxygen (DO), and soft-sensors were used to predict nitrification performance. In the present study, we use synthetic data and monitor three plants to test these soft-sensors. We find that a long sludge age and a moderate aeration rate improve the pH soft-sensor accuracy, and that the aeration regime is the main operational parameter affecting the accuracy of the DO soft-sensor. We demonstrate that integrated design, monitoring, and control are necessary to achieve robust accuracy and to obviate case-specific fine-tuning. Additionally, we provide a unique labelled dataset for further feature and data-driven soft-sensor development. Our approach is limited to sequencing batch reactors. Moreover, nitrite accumulation and alkalinity limitation cannot be detected. The strength of the approach is that unmaintained sensors drastically reduce monitoring costs, enabling the monitoring of plants hitherto unchecked.

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Section: 5mentioning

confidence: 99%

Benchmarking soft-sensors for remote monitoring of on-site wastewater treatment plants

Schneider¹,

Furrer²,

Sprenger³

et al. 2019

Preprint

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…Recently, endocrine disrupting compounds (EDCs), as typical pharmaceutical and personal care products (PPCPs), have been widely/frequently detected in the natural water, wastewater, and sediment [1,2]. In addition, the negative effects of EDCs on human health and ecosystems have drawn significant attention [1,2]. Among these EDCs, 17β-estradiol (E2) is of great concern due to its high reactivity for endocrine activity, i.e., favorable to bind with estrogen receptors [3,4].…”

Section: Introductionmentioning

confidence: 99%

Removal of 17β-Estradiol by Activated Charcoal Supported Titanate Nanotubes (TNTs@AC) through Initial Adsorption and Subsequent Photo-Degradation: Intermediates, DFT calculation, and Mechanisms

Huang

Pan

et al. 2020

Water

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A low-cost composite of activated charcoal supported titanate nanotubes (TNTs@AC) was developed via the facile hydrothermal method to remove the 17β-estradiol (E2, a model of pharmaceutical and personal care products) in water matrix by initial adsorption and subsequent photo-degradation. Characterizations indicated that the modification occurred, i.e., the titanate nanotubes would be grafted onto the activated charcoal (AC) surface, and the micro-carbon could modify the tubular structure of TNTs. E2 was rapidly adsorbed onto TNTs@AC, and the uptake reached 1.87 mg/g from the dual-mode model fitting. Subsequently, the adsorbed E2 could be degraded 99.8% within 2 h under ultraviolet (UV) light irradiation. TNTs@AC was attributed with a unique hybrid structure, providing the hydrophobic effect, π−π interaction, and capillary condensation for E2 adsorption, and facilitating the electron transfer and then enhancing photocatalytic ability for E2-degradation. In addition, the removal mechanism of E2 was elucidated through the density functional theory calculation. Our study is expected to provide a promising material for environmental application.

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“…Water contamination is a significant issue concerning anthropogenic environmental impacts [1]. In this context, drugs are noteworthy contaminants since their development aims both potency maximization and chemical stability.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Removal of Algestone Acetophenide and Estradiol Enanthate in Real Industrial Wastewater

Morais¹

2019

International Journal of Electrochemical Science

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Contaminants removal from industrial effluent is a major environmental concern. In this context, Algestone Acetophenide and Estradiol Enanthate are synthetic sex hormones widely used in the manufacture of contraceptives, whose presence in waterbodies may lead to environmental hazard. Given that so far, the methods employed in the removal of these drugs have presented limited efficiency or high implementation costs, the present work presented an electrochemical reactor composed by 32 carbon steel electrodes (1728 cm 2), which was employed in a real scale model to remove these synthetic hormones in an industrial pharmaceutical effluent. After 60 minutes the removal efficiency of the hormones Algestone Acetophenide and Estradiol Enanthate was of 88.9% and of 91.8% respectively, with low energy consumption (< 0.742 kWh.m-3). Physicochemical parameters such as color, turbidity, Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) also showed good removal efficiency too (> 50%), which implicates that the method herein depicted may be a valuable alternative to promote the removal of these contaminants in industrial wastewater.

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The effect of hydraulic retention time in onsite wastewater treatment and removal of pharmaceuticals, hormones and phenolic utility substances

Cited by 68 publications

References 39 publications

Benchmarking soft-sensors for remote monitoring of on-site wastewater treatment plants

Benchmarking soft-sensors for remote monitoring of on-site wastewater treatment plants

Removal of 17β-Estradiol by Activated Charcoal Supported Titanate Nanotubes (TNTs@AC) through Initial Adsorption and Subsequent Photo-Degradation: Intermediates, DFT calculation, and Mechanisms

Electrochemical Removal of Algestone Acetophenide and Estradiol Enanthate in Real Industrial Wastewater

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