scholarly journals Hydrogen via reforming aqueous ammonia and biomethane co-products of wastewater treatment: environmental and economic sustainability

2020 ◽  
Vol 4 (11) ◽  
pp. 5835-5850
Author(s):  
Oliver Grasham ◽  
Valerie Dupont ◽  
Timothy Cockerill ◽  
Miller Alonso Camargo-Valero ◽  
Martyn V. Twigg
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Aqueous Ammonia ◽  
Economic Sustainability ◽  
The Novel ◽  
Novel Method

Wastewater treatment plants can be centres of green H2 production via the novel method presented for co-reforming of bio-ammonia and bio-methane.

scholarly journals Effect of the C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater as Assessed by a Novel 3D-BER System

2020 ◽  
Vol 12 (18) ◽  
pp. 7611
Author(s):  
Mahdi Hassan ◽  
Guangcan Zhu ◽  
Zhonglian Yang ◽  
Yongze Lu ◽  
Yan Lang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Carbon Sources ◽  
Denitrifying Bacteria ◽  
Vital Role ◽  
Current Intensity ◽  
The Novel ◽  
The Past ◽  
Class Level ◽  
The Ideal

Emerging pollutants in the form of pharmaceuticals have drawn international attention during the past few decades. Ciprofloxacin (CIP) is a common drug widely found in effluents from hospitals, industrial and different wastewater treatment plants, as well as rivers. In this work, the lab-scale 3D-BER system was established, and more than 90% of the antibiotic CIP was removed from Low C/N wastewater. The best results were obtained with the current intensity being taken into account, and a different C/N ratio significantly improved the removal of CIP and nitrates when the ideal conditions were C/N = 1.5–3.5, pH = 7.0–7.5 and I = 60 mA. The highest removal efficiency occurred when CIP = 94.2%, NO3−-N = 95.5% and total nitrogen (TN) = 84.3%, respectively. In this novel system, the autotrophic-heterotrophic denitrifying bacteria played a vital role in the removal of CIP and an enhanced denitrification process. Thus, autotrophic denitrifying bacteria uses CO2 and H2 as carbon sources to reduce nitrates to N2. This system has the assortment and prosperous community revealed at the current intensity of 60 mA, and the analysis of bacterial community structure in effluent samples fluctuates under different conditions of C/N ratios. Based on the results of LC-MS/MS analysis, the intermediate products were proposed after efficient biodegradation of CIP. The microbial community on biodegrading was mostly found at phylum, and the class level was dominantly responsible for the NO3−-N and biodegradation of CIP. This work can provide some new insights towards the biodegradation of CIP and the efficient removal of nitrates from low C/N wastewater treatment through the novel 3D-BER system.

scholarly journals Modeling on Wastewater Treatment Process in Saudi Arabia: a perspective of Covid-19

2021 ◽  
Author(s):  
Zico Meetei Mutum ◽  
Abdullah A Ahmadini ◽  
Ahmed Msmali Hussein ◽  
Yaspal Raghav Singh
Keyword(s):  
Saudi Arabia ◽  
Wastewater Treatment ◽  
Global Economy ◽  
Wastewater Treatment Plants ◽  
Gaussian Model ◽  
The Novel ◽  
Wastewater Treatment Process ◽  
Virus Removal ◽  
Novel Coronavirus ◽  
Log Normal

The novel coronavirus diseases (COVID-19) has resulted in an ongoing pandemic affecting the health system and devastating impact on global economy. The virus has been found in human feces, in sewage and in wastewater treatment plants. We highlight the transmission behavior, occurrence, and persistence of coronavirus in sewage and wastewater treatment plants. Our approach is to follow in the process of identifying a coronavirus hotspot through existing wastewater plants in major cities of Saudi Arabia. The mathematical distributions including log-normal distribution, Gaussian model and susceptible- exposed-infection-recovered- (SEIR) model are adopted to predict the coronavirus load in wastewater plants. This paper highlights not only the potential virus removal techniques from wastewater treatment plants but also to facilitate tracing of SARS-CoV-2 virus in human through wastewater treatment plants.

scholarly journals Effect of C/N Ratio on Biodegradation of Ciprofloxacin and Denitrification from Low C/N Wastewater by a Novel 3D-BER System

2020 ◽  
Author(s):  
Mahdi Hassan ◽  
Guangcan Zhu ◽  
Zhonglian Yang ◽  
Yongze Lu ◽  
Yan Lang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Carbon Sources ◽  
Denitrifying Bacteria ◽  
Vital Role ◽  
Current Intensity ◽  
The Novel ◽  
Efficient Removal ◽  
Class Level ◽  
The Ideal

Emerging pollutants as pharmaceuticals have been focusing international attention for few decades. Ciprofloxacin (CIP) is a common drug widely found in effluents from hospitals, industrial and different wastewater treatment plants, as well as rivers. In this work, the lab-scale 3D-BER system was established, and more than 90% of the antibiotic CIP removal from the Low C/N wastewater. Best results were obtained with current intensity, and different C/N ratio significantly improve the removal of CIP and nitrates, when the ideal conditions were; C/N = 1.5-3.5, pH =7.0-7.5, and I = 60 mA. The highest removal efficiency of CIP = 94.20 %, NO3--N= 95.53 % and total nitrogen (TN) = 84.27 %, respectively. In this novel system, the autotrophic-heterotrophic denitrifying bacteria played vital role for the removal of CIP and enhanced denitrification process. Thus, autotrophic denitrifying bacteria uses CO2 and H2 as carbon sources to reduce nitrates to N2. This system has the assortment and prosperous community revealed at the current intensity of 60 mA, and the analysis of bacterial community structure in effluent samples fluctuates under different condition of C/N ratios. According to the results of LC-MS/MS analysis, the intermediate products were proposed after efficient biodegradation of CIP. Microbial community on biodegrading was mostly found at phylum, and class level was dominantly responsible for the NO3--N and biodegradation of CIP. This work can provide some new insights towards the biodegradation of CIP and the efficient removal of nitrates from low C/N wastewater treatment by the novel 3D-BER system.

scholarly journals A novel method for rapid assessment of the performance and complexity of small wastewater treatment plants

2019 ◽  
Vol 68 (1) ◽  
pp. 32 ◽  
Author(s):  
V Kõrgmaa ◽  
T Tenno ◽  
A Kivirüüt ◽  
M Kriipsalu ◽  
M Gross ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Rapid Assessment ◽  
Novel Method

scholarly journals Economic Sustainability in Wastewater Treatment Companies: A Regional Analysis for the Iberian Peninsula

2021 ◽  
Vol 11 (21) ◽  
pp. 9876
Author(s):  
Eleonora Santos ◽  
Inês Lisboa ◽  
Teresa Eugénio
Keyword(s):  
Wastewater Treatment ◽  
Iberian Peninsula ◽  
Narrative Analysis ◽  
Financial Stability ◽  
Wastewater Treatment Plants ◽  
Regional Analysis ◽  
Policy Implications ◽  
Financial Sustainability ◽  
Economic Sustainability ◽  
National Strategic Plan

An important part of environmental degradation is caused by the discharge of untreated or mistreated wastewater. The reuse of water is paramount to the National Strategic Plan for the Water Supply and Wastewater Sanitation Sector in Portugal and Spain. Since centralized treatment systems have proved to be inefficient, tackling environmental issues requires a regional approach. Wastewater treatment plants (WWTPs) mitigate environmental impacts and contribute to the financial savings of other firms. However, the literature evaluating WWTPs’ financial performance and economic sustainability is scarce. The implementation of a resource recovery technology depends heavily on economic viability. Thus, this paper analyses the financial sustainability of 222 WWTPs in the Iberian Peninsula by NUTS II regions in 2016–2019 to assess the region with the best performance and financial stability and provide regional policy implications. Using the SABI database, this research encompasses a numerical and narrative analysis of key financial ratios. Results show that firms in Algarve and La Rioja exhibit higher financial sustainability when compared to other regions. Results can foster enhancements in the governance of regulated utilities.

scholarly journals A Novel Method to Determine Blower Capacity of Wastewater Treatment Plants for Dry and Wet Weather Conditions

2021 ◽  
Vol 19 (4) ◽  
pp. 212-229
Author(s):  
Viet Hoang Nguyen ◽  
Van Tuan Le ◽  
Thi Ha Nguyen ◽  
Xuan Hai Nguyen ◽  
Viet Anh Nguyen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Weather Conditions ◽  
Novel Method ◽  
Wet Weather

A novel method for the determination of linting propensity of paper

TAPPI Journal ◽  
2012 ◽  
Vol 11 (10) ◽  
pp. 9-17
Author(s):  
ALESSANDRA GERLI ◽  
LEENDERT C. EIGENBROOD
Keyword(s):  
Ash Content ◽  
The Novel ◽  
Offset Printing ◽  
Excellent Correlation ◽  
End Conditions ◽  
Bottom Side ◽  
Novel Method ◽  
Total Fraction

A novel method was developed for the determination of linting propensity of paper based on printing with an IGT printability tester and image analysis of the printed strips. On average, the total fraction of the surface removed as lint during printing is 0.01%-0.1%. This value is lower than those reported in most laboratory printing tests, and more representative of commercial offset printing applications. Newsprint paper produced on a roll/blade former machine was evaluated for linting propensity using the novel method and also printed on a commercial coldset offset press. Laboratory and commercial printing results matched well, showing that linting was higher for the bottom side of paper than for the top side, and that linting could be reduced on both sides by application of a dry-strength additive. In a second case study, varying wet-end conditions were used on a hybrid former machine to produce four paper reels, with the goal of matching the low linting propensity of the paper produced on a machine with gap former configuration. We found that the retention program, by improving fiber fines retention, substantially reduced the linting propensity of the paper produced on the hybrid former machine. The papers were also printed on a commercial coldset offset press. An excellent correlation was found between the total lint area removed from the bottom side of the paper samples during laboratory printing and lint collected on halftone areas of the first upper printing unit after 45000 copies. Finally, the method was applied to determine the linting propensity of highly filled supercalendered paper produced on a hybrid former machine. In this case, the linting propensity of the bottom side of paper correlated with its ash content.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

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