scholarly journals Full-scale semi-centralized wastewater treatment facilities for resource recovery: operation, problems and resolutions

2020 ◽  
Author(s):  
Xianchun Tang ◽  
Yexuan Wen ◽  
Yi He ◽  
Haixin Jiang ◽  
Xiaohu Dai ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Conventional Treatment ◽  
Volatile Fatty Acids ◽  
High Efficiency ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Resource Recovery ◽  
Full Scale ◽  
Operation Performance ◽  
Centralized Wastewater Treatment

Abstract The first full-scale semi-centralized wastewater treatment and resource recovery system based on source separation was implemented from 2014. To assess the operation performance, operating costs and resolve the problems faced in this system, the latest operation data from April 2017 to September 2018 was investigated. The results show that greywater and blackwater modules exhibited good removal performance for organics and nutrients, although misconnection between pipelines existed and influent loading rates fluctuated. The effluent could meet reuse standards. The biogas production rates of raw sludge could reach 7.27–10.9 m3 gas·per cubic raw sludge. The specific cost of treated water was higher than in a conventional treatment system. Power consumption made a major contribution to the total cost with a proportion of 55.3%–94.2%. After optimizing and considering the comprehensive efficiencies, the costs would be affordable. The dewatered sludge of the anaerobic digestion module has been applied to agricultural and landscaping soil. It is suggested that organics in blackwater could be recovered as volatile fatty acids with high-efficiency anaerobic fermentation and used as an external carbon source for short-cut biological nitrogen removal. In conclusion, the semi-centralized system will be a feasible and sustainable alternative for conventional treatment systems in future.

scholarly journals Wastewater Valorization: Practice around the World at Pilot- and Full-Scale

2021 ◽  
Vol 18 (18) ◽  
pp. 9466
Author(s):  
Anouk F. Duque ◽  
Riccardo Campo ◽  
Angeles Val del Rio ◽  
Catarina L. Amorim
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Volatile Fatty Acids ◽  
Wastewater Treatment Plants ◽  
Resource Recovery ◽  
Full Scale ◽  
Biomass Energy ◽  
Wastewater Treatment Process ◽  
Recovery Potential ◽  
The World

Over the last few years, wastewater treatment plants (WWTPs) have been rebranded as water resource recovery facilities (WRRFs), which recognize the resource recovery potential that exists in wastewater streams. WRRFs contribute to a circular economy by not only producing clean water but by recovering valuable resources such as nutrients, energy, and other bio-based materials. To this aim, huge efforts in technological progress have been made to valorize sewage and sewage sludge, transforming them into valuable resources. This review summarizes some of the widely used and effective strategies applied at pilot- and full-scale settings in order to valorize the wastewater treatment process. An overview of the different technologies applied in the water and sludge line is presented, covering a broad range of resources, i.e., water, biomass, energy, nutrients, volatile fatty acids (VFA), polyhydroxyalkanoates (PHA), and exopolymeric substances (EPS). Moreover, guidelines and regulations around the world related to water reuse and resource valorization are reviewed.

scholarly journals From wastewater treatment to water resource recovery: Environmental and economic impacts of full-scale implementation

2021 ◽  
pp. 117554
Author(s):  
Maria Faragò ◽  
Anders Damgaard ◽  
Jeanette Agertved Madsen ◽  
Jacob Kragh Andersen ◽  
Dines Thornberg ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Water Resource ◽  
Economic Impacts ◽  
Resource Recovery ◽  
Full Scale

scholarly journals Reuse of microalgae grown in full-scale wastewater treatment ponds: Thermochemical pretreatment and biogas production

2016 ◽  
Vol 209 ◽  
pp. 305-312 ◽  
Author(s):  
Fabiana Passos ◽  
Leonardo Felix ◽  
Hemyle Rocha ◽  
Jackson de Oliveira Pereira ◽  
Sérgio de Aquino
Keyword(s):  
Wastewater Treatment ◽  
Biogas Production ◽  
Full Scale ◽  
Thermochemical Pretreatment

Application of the IWA Anaerobic Digestion Model (ADM1) for simulating full-scale anaerobic sewage sludge digestion

2005 ◽  
Vol 52 (1-2) ◽  
pp. 487-492 ◽  
Author(s):  
Y. Shang ◽  
B.R. Johnson ◽  
R. Sieger
Keyword(s):  
Wastewater Treatment ◽  
Steady State ◽  
Anaerobic Digestion ◽  
Biogas Production ◽  
Treatment Plant ◽  
Biochemical Parameter ◽  
Full Scale ◽  
Anaerobic Digesters ◽  
Biogas Yield ◽  
Volatile Solids

A steady-state implementation of the IWA Anaerobic Digestion Model No. 1 (ADM1) has been applied to the anaerobic digesters in two wastewater treatment plants. The two plants have a wastewater treatment capacity of 76,000 and 820,000 m3/day, respectively, with approximately 12 and 205 dry metric tons sludge fed to digesters per day. The main purpose of this study is to compare the ADM1 model results with full-scale anaerobic digestion performance. For both plants, the prediction of the steady-state ADM1 implementation using the suggested physico-chemical and biochemical parameter values was able to reflect the results from the actual digester operations to a reasonable degree of accuracy on all parameters. The predicted total solids (TS) and volatile solids (VS) concentration in the digested biosolids, as well as the digester volatile solids destruction (VSD), biogas production and biogas yield are within 10% of the actual digester data. This study demonstrated that the ADM1 is a powerful tool for predicting the steady-state behaviour of anaerobic digesters treating sewage sludges. In addition, it showed that the use of a whole wastewater treatment plant simulator for fractionating the digester influent into the ADM1 input parameters was successful.

An Integrated Low Cost System for Treatment of Potato Processing Wastewater Incorporating Anaerobic Fermentation and Phosphorus Removal

1982 ◽  
Vol 14 (6-7) ◽  
pp. 675-687 ◽  
Author(s):  
J G Parker ◽  
B J Lyons ◽  
C D Parker
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Phosphorus Removal ◽  
Anaerobic Fermentation ◽  
Low Cost ◽  
Full Scale ◽  
Processing Plant ◽  
Low Grade ◽  
Plant Design ◽  
Potato Processing

The pollution load from a modern potato processing plant represents a substantial wastewater treatment and disposal problem with considerable potential for process innovation. With continued increase in energy costs, recent developments in treatment of industrial organic wastes by direct anaerobic fermentation rather than conventional energy intensive aerobic processes, offer considerable cost savings for wastewater treatment in the potato and other food processing industries. The development, through pilot plant investigations, of a low cost, integrated system incorporating anaerobic fermentation and phosphorus removal facilities is described. Details of full scale plant design, performance and costs, including aspects of utilization of treatment plant by-product biogas, and land disposal of residual phosphorus sludge as low grade fertilizer, are presented. Operating data obtained since commissioning of the full scale plant in January, 1980 demonstrates consistent achievement of an overall B.O.D.5 removal efficiency of 90% and an overall phosphorus removal efficiency of 93%. Total annual treatment cost is $A0.15/kg B0D5 removed (1981 costs).

scholarly journals MBR-Assisted VFAs Production from Excess Sewage Sludge and Food Waste Slurry for Sustainable Wastewater Treatment

2020 ◽  
Vol 10 (8) ◽  
pp. 2921 ◽  
Author(s):  
Mohsen Parchami ◽  
Steven Wainaina ◽  
Amir Mahboubi ◽  
David I’Ons ◽  
Mohammad J. Taherzadeh
Keyword(s):  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Food Waste ◽  
Volatile Fatty Acids ◽  
Wastewater Treatment Plants ◽  
Biogas Production ◽  
Economic Assessment ◽  
Ph Control ◽  
Daily Basis ◽  
Solids Concentration

The significant amount of excess sewage sludge (ESS) generated on a daily basis by wastewater treatment plants (WWTPs) is mainly subjected to biogas production, as for other organic waste streams such as food waste slurry (FWS). However, these organic wastes can be further valorized by production of volatile fatty acids (VFAs) that have various applications such as the application as an external carbon source for the denitrification stage at a WWTP. In this study, an immersed membrane bioreactor set-up was proposed for the stable production and in situ recovery of clarified VFAs from ESS and FWS. The VFAs yields from ESS and FWS reached 0.38 and 0.34 gVFA/gVSadded, respectively, during a three-month operation period without pH control. The average flux during the stable VFAs production phase with the ESS was 5.53 L/m2/h while 16.18 L/m2/h was attained with FWS. Moreover, minimal flux deterioration was observed even during operation at maximum suspended solids concentration of 32 g/L, implying that the membrane bioreactors could potentially guarantee the required volumetric productivities. In addition, the techno-economic assessment of retrofitting the membrane-assisted VFAs production process in an actual WWTP estimated savings of up to 140 €/h for replacing 300 kg/h of methanol with VFAs.

Effect of a Cellulose-Degrading Strain on Anaerobic Fermentation of Corn Straw

2011 ◽  
Vol 356-360 ◽  
pp. 2510-2514 ◽  
Author(s):  
Ming Fen Niu ◽  
Sai Yue Wang ◽  
Wen Di Xu ◽  
An Dong Ge ◽  
Hao Wang
Keyword(s):  
Fatty Acids ◽  
Anaerobic Digestion ◽  
Methane Production ◽  
Volatile Fatty Acids ◽  
Anaerobic Fermentation ◽  
Biogas Production ◽  
Corn Straw ◽  
High Efficient ◽  
Important Significance ◽  
Strong Capacity

In order to improve the rate of degradation of cellulose in corn straw, the study has an important significance that compost corn straw with inoculating high-efficient microbe agents. The experiment inoculated a cellulose-degrading strain F2 which was screened from compost into compost pretreatment, the VS of corn straw reduced from 93.14% to 71.69% after 15 days, the content of cellulose reduced from 34.12g·kg-1 to 25.66g·kg-1, the rate of degradation was 24.79% which was 10.60% higher than those without the strain. An anaerobic fermentation experiment was carried out with the two groups of composted corn straw and mixed pig feces with a certain ratio, and investigations of biogas production, pH, content of volatile fatty acids(VFA) and rate of methane production were conducted. The results were that the corn straw composted with the cellulose-degrading strain peaked 4 days earlier, the maximal daily biogas production was 1470mL, the cumulative biogas production reached 23641mL which was 16.87% higher and operated stably earlier. The study showed that the cellulose-degrading strain had a strong capacity to degrade cellulose in corn straw, and then improved the performance of anaerobic digestion.

Biogas production from cheese whey wastewater: laboratory- and full-scale studies

2014 ◽  
Vol 69 (6) ◽  
pp. 1320-1325 ◽  
Author(s):  
K. Stamatelatou ◽  
N. Giantsiou ◽  
V. Diamantis ◽  
C. Alexandridis ◽  
A. Alexandridis ◽  
...  
Keyword(s):  
High Efficiency ◽  
Cheese Whey ◽  
Biogas Production ◽  
Oxygen Demand ◽  
Full Scale ◽  
Laboratory Scale ◽  
Phase System ◽  
Two Phase ◽  
Set Up ◽  
Cheese Production

A two-phase system for biogas production from cheese whey wastewater (CWW) was designed, set up and operated at laboratory and full scale for a whole cheese production season (8–9 months). The high efficiency and stability of the laboratory-scale system was demonstrated under various organic loading rates (OLRs) reaching 13 g chemical oxygen demand (COD) L−1d−1 and producing up to 9 L L−1d−1 of biogas (approximately 55% in methane). The COD removal was above 95% and the pH was maintained above 6.3 without any chemical addition. The full-scale system was operated at lower OLRs than its normal capacity, following the good response and high stability in disturbances of the laboratory-scale unit.

scholarly journals Water Resource Recovery Facilities (WRRFs): The Case Study of Palermo University (Italy)

Water ◽  
2021 ◽  
Vol 13 (23) ◽  
pp. 3413
Author(s):  
Giorgio Mannina ◽  
Rosa Alduina ◽  
Luigi Badalucco ◽  
Lorenzo Barbara ◽  
Fanny Claire Capri ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Water Resource ◽  
Circular Economy ◽  
Volatile Fatty Acids ◽  
Treatment Plant ◽  
Resource Recovery ◽  
Horizon 2020 ◽  
Eu Project ◽  
The University

The wastewater sector paradigm is shifting from wastewater treatment to resource recovery. In addition, concerns regarding sustainability during the operation have increased. In this sense, there is a need to break barriers (i.e., social, economic, technological, legal, etc.) for moving forward towards water resource recovery facilities and demonstration case studies can be very effective and insightful. This paper presents a new water resource recovery case study which is part of the Horizon 2020 EU Project “Achieving wider uptake of water-smart solutions—Wider Uptake”. The final aim is to demonstrate the importance of a resource recovery system based on the circular economy concept. The recovery facilities at Palermo University (Italy) are first presented. Afterwards, the resource recovery pilot plants are described. Preliminary results have underlined the great potential of the wastewater treatment plant in terms of resources recovery and the central role of the University in fostering the transition towards circular economy. The fermentation batch test highlighted a volatile fatty acids (VFAs) accumulation suitable for polyhydroxyalkanoates (PHAs) production. The results of static adsorption and desorption tests showed that the highest amount of adsorbed NH4+ was recorded for untreated and HCl-Na treated clinoptilolite.

Sign in / Sign up

Export Citation Format

Share Document