100% renewable wastewater treatment plants: Techno-economic assessment using a modelling and optimization approach

2021 ◽  
Vol 239 ◽  
pp. 114214
Author(s):  
Pietro Elia Campana ◽  
Matia Mainardis ◽  
Alessandro Moretti ◽  
Mattia Cottes
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Economic Assessment ◽  
Optimization Approach ◽  
Modelling And Optimization

Ozonation of wastewater sludge for reduction and recycling

2002 ◽  
Vol 46 (10) ◽  
pp. 71-77 ◽  
Author(s):  
K.-H. Ahn ◽  
K.Y. Park ◽  
S.K. Maeng ◽  
J.H. Hwang ◽  
J.W. Lee ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Economic Assessment ◽  
Pilot Scale ◽  
Wastewater Sludge ◽  
Ozone Treatment ◽  
Sludge Treatment ◽  
Micro Particles ◽  
Belt Press ◽  
Treatment And Disposal

An ozone treatment system was introduced as an alternative method for municipal sludge treatment and disposal. A pilot-scale facility was built to investigate the feasibility of the ozonation for sludge reduction and recycle. The system consists of three main parts; advanced wastewater treatment, sludge ozone treatment and belt press dewatering. Ozonation of wastewater sludge resulted in mass reduction by mineralization as well as volume reduction by improvement of dewatering characteristics. The supernatant of the ozonated sludge, consisting of solubilized organics and micro-particles, proved to be an effective carbon source for denitrification. A simple economic assessment reveals that the ozonation process can be more economical than incineration for sludge treatment and disposal at small- and medium-sized wastewater treatment plants.

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.

Scale-up economic assessment and experimental analysis of MF–RO integrated membrane systems in oily wastewater treatment plants for reuse application

Desalination ◽  
2015 ◽  
Vol 374 ◽  
pp. 31-37 ◽  
Author(s):  
Bardiya Valizadeh ◽  
Farzin Zokaee Ashtiani ◽  
Amir Fouladitajar ◽  
Bahram Dabir ◽  
Saba Seyed Mahmoud Baraghani ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Experimental Analysis ◽  
Wastewater Treatment Plants ◽  
Scale Up ◽  
Economic Assessment ◽  
Oily Wastewater ◽  
Membrane Systems ◽  
Oily Wastewater Treatment

scholarly journals Techno-Economic Assessment of CHP Systems in Wastewater Treatment Plants

Environments ◽  
2020 ◽  
Vol 7 (10) ◽  
pp. 74
Author(s):  
Derall M. Riley ◽  
Jiashen Tian ◽  
Gamze Güngör-Demirci ◽  
Patrick Phelan ◽  
J. Rene Villalobos ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Net Present Value ◽  
Wastewater Treatment Plants ◽  
Biogas Production ◽  
Treatment Plant ◽  
Economic Assessment ◽  
Prime Mover ◽  
Current State ◽  
Prime Movers ◽  
Chp System

Wastewater treatment plant (WWTP) utilization of combined heat and power (CHP) systems allows for the efficient use of on-site biogas production, as well as increased annual savings in utility costs. In this paper, a review of biogas energy recovery options, CHP prime mover technologies, and the costs associated with biogas cleaning give a broad summary of the current state of CHP technology in WWTPs. Even though there are six different prime mover technologies, the main ones currently being implemented in WWTPs are micro turbines, fuel cells and reciprocating engines. Different prime movers offer varying efficiencies, installation costs, and biogas impurity (H2S, siloxanes, HCl) tolerances. To evaluate the long-term savings capabilities, a techno-economic assessment of a CHP installation at a case study WWTP shows the payback, annual savings, and initial costs associated with the installation of a CHP system. In this case, a study a payback of 5.7 years and a net present value of USD 709,000 can be achieved when the WWTP generates over 2,000,000 m3 of biogas per year and utilizes over 36,000 GJ of natural gas per year.

Waste-to-biofuel integrated system and its comprehensive techno-economic assessment in wastewater treatment plants

2018 ◽  
Vol 250 ◽  
pp. 523-531 ◽  
Author(s):  
Chunhua Xin ◽  
Min M. Addy ◽  
Jinyu Zhao ◽  
Yanling Cheng ◽  
Yiwei Ma ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Economic Assessment ◽  
Integrated System
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