Network based controller systems for pre-conditioning of waste water in sewer systems

2012 ◽  
Vol 7 (2) ◽  
Author(s):  
Wolfram Franke ◽  
Marina Ettl ◽  
Tim Corben ◽  
Guido Kuhn
Keyword(s):  
Communication Technology ◽  
Preventive Treatment ◽  
Oil And Grease ◽  
Sewer Systems ◽  
Communications Network ◽  
Sewer Network ◽  
Local Solutions ◽  
Odour Emissions ◽  
Technical Solutions

Sewer network odour emissions have become a focus due to environmental regulations and, in the case Hydrogen Sulphide (H2S) induced corrosion, due to safety and sustainability. For these reasons the establishment of emission treatment is recommended. Sewer emission treatment focuses on local solutions rather than sewer-wide network treatment. The dosing of chemicals for this purpose is usually done section-wise. Obviously there is optimization potential when sewers are understood and treated as networks. Preventive treatment can be optimized by information from downstream and curative treatment by information from upstream. Such concepts demand communication technology and monitoring of several parameters at various locations in the sewer network. In the presented case study a digital communications network is used to control H2S emissions and fat, oil and grease (FOG) disposal in a sewer network. Moreover it was shown that technical solutions are available to use sewers as controlled reactors rather than just let them be a source of problems. An overview of today's standard dosing systems and strategies for odour and corrosion control is also given.

Fat, oil and grease - Sewer contamination prevention strategies and double-dosage concept for fat traps and pressure mains

2011 ◽  
Vol 6 (2) ◽  
Author(s):  
Wolfram Franke ◽  
Marina Ettl ◽  
Daniel Roldan ◽  
Guido Kuhn ◽  
Anne Mette Langholm ◽  
...  
Keyword(s):  
Hydrogen Sulphide ◽  
Additional Treatment ◽  
Full Scale ◽  
Prevention Strategies ◽  
Oil And Grease ◽  
Sewer Systems ◽  
Sewer Network ◽  
Pumping Stations ◽  
Full Scale Tests

Disposal of fat, oil and grease (FOG) in sewer systems cause blockages, fatal errors of pumping stations, increased maintenance, odours, hydrogen sulphide (H2S) emissions and corrosion. Hence, solutions to prevent FOG disposals are desirable. Challenges are prevention of FOG contamination of sewer systems and removal of FOG disposals. A survey and lab as well as full scale tests were performed. In the first place fat traps and grease inceptors should be installed to prevent FOG contamination what is documented as being very effective. A case study shows that the operation of fat traps may indeed produce further problems, especially H2S emissions, what demands an additional treatment. Removal of FOG disposals can be handled by applying enzymes to the affected sewer network. It was found that enzymes are preferable towards surfactants to remove FOG disposals. It appears to be a solution to have one dosing site that is equipped with separately controlled dosing pumps for conditioners for H2S removal as well as FOG removal.

A Decision-Making Method for Boosting New Digitalization Technologies

2021 ◽  
pp. 1-35
Author(s):  
Francisco E. Santarremigia ◽  
Sara Poveda-Reyes ◽  
Miguel Hervás-Peralta ◽  
Gemma D. Molero
Keyword(s):  
Decision Making ◽  
Communication Technology ◽  
Net Present Value ◽  
Decision Makers ◽  
New Information ◽  
Information And Communication ◽  
Potential Benefits ◽  
Technology Tool ◽  
Technical Solutions

Market acceptance of new digitalization technologies is low. To help to address this shortcoming, the following paper defines a quantitative decision-making methodology for the exante evaluation of the market acceptance of new digitalization solutions in the initial stages of design and development. The proposed decision-making methodology includes a first evaluation, using Volere methodology, for the quantification of how useful the new digitalization solution is for the end users, and a second method, the calculation of the net present value (NPV) based on potential benefits in terms of costs and intangible benefits of the new tool. A new tool for the management of freight transport was used as a case study. The usefulness of a new information technology tool was assessed in six different companies. It was designed to help developers and decision makers in information and communication technology (ICT) product development, and company managers in the evaluation of technical solutions that might better satisfy their needs. Further studies could measure the power of this methodology by comparing the implementation levels of two different prototypes designed for the same function and with different Volere and NPV scorings.

scholarly journals Groundwater Contribution to Sewer Network Baseflow in an Urban Catchment-Case Study of Pin Sec Catchment, Nantes, France

Water ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 689
Author(s):  
Fabrice Rodriguez ◽  
Amélie-Laure Le Delliou ◽  
Hervé Andrieu ◽  
Jorge Gironás
Keyword(s):  
Urban Areas ◽  
Soil Parameters ◽  
Catchment Scale ◽  
Urban Catchment ◽  
Groundwater Levels ◽  
Sewer Systems ◽  
Sewer Network ◽  
Urban Catchments ◽  
Groundwater Contribution

Sewer systems affect urban soil characteristics and subsoil water flow. The direct connection observed between baseflow in sewer systems under drainage infiltrations and piezometric levels influences the hydrological behavior of urban catchments, and must consequently be considered in the hydrologic modeling of urban areas. This research studies the groundwater contribution to sewer networks by first characterizing the phenomenon using experimental data recorded on a small urban catchment in Nantes (France). Then, the model MODFLOW was used to simulate the infiltration of groundwater into a sewer network and model dry weather flows at an urban catchment scale. This application of MODFLOW requires representing, in a simplified way, the interactions between the soil and the sewer trench, which acts as a drain. Observed average groundwater levels were satisfactorily simulated by the model while the baseflow dynamics is well reproduced. Nonetheless, soil parameters resulted to be very sensitive, and achieving good results for joint groundwater levels and baseflow was not possible.

Modelling to assist in wastewater collection system odour and corrosion potential evaluations

2004 ◽  
Vol 50 (4) ◽  
pp. 177-183 ◽  
Author(s):  
J. Witherspoon ◽  
E. Allen ◽  
C. Quigley
Keyword(s):  
Wastewater Treatment ◽  
Liquid Phase ◽  
Corrosion Potential ◽  
Collection System ◽  
Sewer Systems ◽  
Odour Control ◽  
Useful Life ◽  
Odour Emissions ◽  
Wastewater Collection

Odour emissions and corrosion concerns can be a constant focus for many wastewater treatment and collection system owners, usually from the first day that their collection systems begin operation. Many sewer systems are reaching the end of their useful life, or have experienced either odour or corrosion issues. This paper shows a link between odour generation and corrosion potential, and how modelling can be used to assist in odour/corrosion assessments of existing wastewater collection systems. A model has been developed that is capable of predicting liquid-phase sulphide generation and subsequent release to overlying sewer headspace as hydrogen sulphide (H2S), where it can be the source of either odour or corrosion problems. This paper presents an overview of the model, and uses a case study involving both odour and corrosion issues to demonstrate the utility in modelling. The model was used to identify potential locations within the system where odour/corrosion may be problematic, as well as assisting in the evaluation of potential odour control alternatives.

Manajemen Stratejik Pemanfaatan Teknologi Informasi dan Komunikasi untuk Peningkatan Mutu Pembelajaran SMK Ciledug Al Musaddadiyah dan SMKN 1 Garut

2020 ◽  
Vol 3 (2) ◽  
pp. 109-119
Author(s):  
Partono Partono
Keyword(s):  
High School ◽  
Strategic Management ◽  
Information And Communication Technology ◽  
Communication Technology ◽  
General Description ◽  
Vocational High School ◽  
Information And Communication ◽  
School Learning

So far, in implementing school strategies, they tend not to utilize Information and Communication Technology (ICT), despite the availability of ICT resources available. Stages of strategic management are needed to generate the vision, mission, objectives, policy, program, budget, and procedures as well as control and evaluation process as an effort to utilize ICT to improve school quality. Based on the interpretation and the results of the study, it is concluded that schools have organized stages in strategic management that enable schools to have a quality profile. The impact of effective utilization of ICTs for schools is the achievement of effective school management, as per the National Education Standards, which is characterized by effective planning, implementation, control, and evaluation of school ICTs.The purpose of this study is to get a general description, describe, and reveal the Strategic Management of Information and Communication Technology Utilization to Improve the Quality of School Learning in Ciledug Al Musaddadiyah Vocational High School and Garut 1 Vocational High School, both on environmental analysis, strategic formulation, implementation and strategic evaluation. The research method used in this research is the case study method, because the problems studied occur in the place and situation of Ciledug Al Musaddadiyah Vocational School and Vocational High School 1 Garut. The use of case study models in this study is based on the consideration that to provide an overview of the strategic management activities of the use of ICTs carried out at vocational high schools with the ultimate goal of being able to improve the quality of school learning. Based on observations in the field of SMK 1 Garut and SMK Al Musaddadiyah Ciledug Garut is one of the public schools and private schools that have these advantages.

Promoting Autonomous Learning through Self-, Peer-, and Co-assessment to Ensure High Quality in Georgian Higher Education (a case study of International Black Sea University, Georgia)

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
Irma MESIRIDZE ◽  
Nino TVALTCHRELIDZE
Keyword(s):  
Higher Education ◽  
Black Sea ◽  
Communication Technology ◽  
Bologna Process ◽  
Education Quality ◽  
Education Students ◽  
Higher Education Quality ◽  
Information And Communication ◽  
The Bologna Process

The Bologna Process, Information and Communication Technology, and market forces have brought manyinnovations and great changes to higher education systems throughout Europe. Reforms in higher educationhave taken a new direction, towards making higher education students more autonomous. However, manycountries have not really adopted this innovative way of teaching and still maintain an old ‘transmission’ stylewhich often entails teachers trying to pour knowledge into the minds of their students. Promoting autonomouslearning (the ability of students to manage their own learning) in higher education is crucial both for theindividual and society, as the idea of an academic student comprises critical reflective thinking and theimportance of becoming an independent learner. This article will discuss the importance of promotingautonomous learning throughout self, peer and co-assessment for higher education quality enhancement. Thepaper will examine the case of International Black Sea University’s MA students enrolled in the Higher EducationManagement program. The analyses of a survey will be used to discuss the significance of autonomous learningfor students and their readiness for self, peer and co-assessment.

Side effects of cultured bacteria addition in wastewater collection system on plant operations – a case study

2012 ◽  
Vol 7 (1) ◽  
Author(s):  
Yanjin Liu ◽  
Giraldo Eugenio
Keyword(s):  
Energy Use ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Collection System ◽  
Oil And Grease ◽  
Odor Control ◽  
Plant Operations ◽  
Cultured Bacteria ◽  
Wastewater Collection

Cultured bacteria addition is one of the technologies used for odor control and FOG (fat, oil, and grease) removal in wastewater collection systems. This study investigated the efficiency of bacterial addition on wastewater odor control by conducting a set of full scale trials in a 60,000 cubic meter per day system for a period of two years. The objectives of this study were: (i) to identify factors that could impact wastewater treatment plant (WWTP) operations due to the effect of bacterial addition in the collection system, (ii) to estimate/understand the level of those impacts, and (iii) to present some interesting findings from the completed case study. The plant operation data before and during the bacterial addition were reviewed. The application of the cultured bacteria presented in the study was found to have significant impacts on the operation of the WWTP in terms of influent biological oxygen demand (BOD) and total suspended solids (TSS) loading, primary settling, sludge production, energy use, dissolved sulfides concentration, and methane production.

Sediment transport under dry weather conditions in a small sewer system

1998 ◽  
Vol 37 (1) ◽  
pp. 155-162
Author(s):  
Flemming Schlütter ◽  
Kjeld Schaarup-Jensen
Keyword(s):  
Sediment Transport ◽  
Field Data ◽  
Field Measurements ◽  
Weather Conditions ◽  
Sewer System ◽  
Transport Models ◽  
Sewer Systems ◽  
Combined Sewer ◽  
Initial Results

Increased knowledge of the processes which govern the transport of solids in sewers is necessary in order to develop more reliable and applicable sediment transport models for sewer systems. Proper validation of these are essential. For that purpose thorough field measurements are imperative. This paper renders initial results obtained in an ongoing case study of a Danish combined sewer system in Frejlev, a small town southwest of Aalborg, Denmark. Field data are presented concerning estimation of the sediment transport during dry weather. Finally, considerations on how to approach numerical modelling is made based on numerical simulations using MOUSE TRAP (DHI 1993).

Pollution based real time control strategies for combined sewer systems

1997 ◽  
Vol 36 (8-9) ◽  
pp. 331-336 ◽  
Author(s):  
Gabriela Weinreich ◽  
Wolfgang Schilling ◽  
Ane Birkely ◽  
Tallak Moland
Keyword(s):  
Real Time ◽  
Control Strategies ◽  
Ammonia Nitrogen ◽  
Simple Extension ◽  
Real Time Control ◽  
Time Control ◽  
Sewer Systems ◽  
Receiving Waters ◽  
Tunnel System

This paper presents results from an application of a newly developed simulation tool for pollution based real time control (PBRTC) of urban drainage systems. The Oslo interceptor tunnel is used as a case study. The paper focuses on the reduction of total phosphorus Ptot and ammonia-nitrogen NH4-N overflow loads into the receiving waters by means of optimized operation of the tunnel system. With PBRTC the total reduction of the Ptot load is 48% and of the NH4-N load 51%. Compared to the volume based RTC scenario the reductions are 11% and 15%, respectively. These further reductions could be achieved with a relatively simple extension of the operation strategy.

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