A cost–benefit analysis of methods for the determination of biomass concentration in wastewater treatment

Anaerobe ◽  
2006 ◽  
Vol 12 (5-6) ◽  
pp. 254-259 ◽  
Author(s):  
J.E. Hernandez ◽  
R.T. Bachmann ◽  
R.G.J. Edyvean
2017 ◽  
Vol 68 (2) ◽  
pp. 284-290
Author(s):  
Gheorghe Zecheru ◽  
Ionut Lambrescu

The paper presents the particularities of accomplishing risk analyses with the purpose of establishing the safety distances � SD, between the pipes belonging to the natural gas national transmission system � NTS and facilities (people, animals, buildings, crops, orchards, forests etc.) placed in the their vicinity. In order to check if the distances between the National Gas Transportation Pipeline- NGTP and neighboring facilities are SD, the authors developed a procedure and a software for the risk assessment, which make use of a set of formulas validated by experimental results presented in the paper and information from the data base (built by the authors and presented briefly in our work) regarding the supervision of the technical state and recording of the accidents that took place in the last 19 years on the NGTP from NTS. Also, in the paper, one describes the way the technical solutions verified using the procedure and the software built by the authors can be selected and ranked (in view of implementation) by applying the ALARP principle and the cost � benefit analysis.


Water Policy ◽  
2013 ◽  
Vol 16 (2) ◽  
pp. 323-339 ◽  
Author(s):  
Nele Lienhoop ◽  
Emad K. Al-Karablieh ◽  
Amer Z. Salman ◽  
Jaime A. Cardona

Decentralised wastewater treatment systems offer an opportunity to introduce wastewater treatment and generate irrigation water in places that are not connected to centralised treatment plants. The advantages of decentralised technologies include their capability to provide wastewater treatment infrastructure in remote and hilly rural communities and their flexible adaptation to fast-growing semi-urban settlements. In this study we investigate the costs and benefits of introducing decentralised wastewater treatment and re-use to two locations in Jordan. The cost–benefit analysis (CBA) used here differs from traditional CBA in that it includes non-market benefits for which monetary values are not readily available, in addition to market benefits. We elaborate on three valuation methods to monetise benefits associated with the environment, health and irrigation in agriculture. Our findings suggest that it is principally worthwhile to establish decentralised treatment technologies in remote areas.


2021 ◽  
Vol 126 ◽  
pp. 632-642
Author(s):  
Marco Wehner ◽  
Thomas Lichtmannegger ◽  
Sabine Robra ◽  
Alice do Carmo Precci Lopes ◽  
Christian Ebner ◽  
...  

2016 ◽  
Vol 11 (1) ◽  
pp. 59-70
Author(s):  
Rastislav Fijko ◽  
Martina Zeleňáková

Abstract The work highlights the modeling of water flow in open channels using 1D mathematical model HEC-RAS in the area of interest Lopuchov village in eastern Slovakia. We created a digital model from a geodetic survey, which was used to show the area of inundation in ArcGIS software. We point out the modeling methodology with emphasis to collection of the data and their relevance for determination of boundary conditions in 3D model of the study area in GIS platform. The BIM objects can be exported to the defined model of the area. The obtained results were used for simulation of flooding. The results give to us clearly and distinctly defined areas of inundation, which we used in the processing of Cost benefit analysis. We used the developed model for stating the potential damages in flood vulnerable areas.


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