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.

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.

Biological odour control by diffusion into activated sludge basins

2000 ◽  
Vol 41 (6) ◽  
pp. 127-132 ◽  
Author(s):  
R. P. Bowker
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Plants ◽  
High Strength ◽  
Air Stream ◽  
Fine Bubble ◽  
Treatment Facilities ◽  
Odour Control ◽  
Odour Emissions ◽  
Air Streams

Diffusion of odourous air into activated sludge basins is an effective and economical approach for odour control at wastewater treatment plants. Over 30 facilities in North America practice this technique. Most of these applications are for dilute or moderate strength air streams with relatively low hydrogen sulfide (H2S) levels. Unfortunately, the lack of data documenting the effectiveness of the process and concerns for blower corrosion have limited its acceptance as a method for controlling odour emissions. This paper presents a compilation and review of wastewater treatment facilities that are currently using activated sludge diffusion. Performance data are tabulated, and information on operation and maintenance of the blower/diffuser systems are summarized. New data are presented that compare the effectiveness of coarse vs. fine bubble diffusers for treatment of a high strength, high-H2S air stream from sludge holding tanks at Concord, NH. Designand performance information is presented on a dedicated odour control system installed at Phoenixville, Pennsylvania in 1996 that collects high-H2S air streams from an influent chamber and primary clarifiers and diffuses it into a mechanically-aerated activated sludge basin. A cost-effectiveness analysis is presented for a blower/diffuser system installed exclusively for odour control. Methods used to overcome initial operational problems are discussed.

Odour emission capacity of wastewaters - standardization of measurement method and application

1998 ◽  
Vol 38 (3) ◽  
pp. 61-69 ◽  
Author(s):  
Franz-Bernd Frechen ◽  
Wulf Köster
Keyword(s):  
Wastewater Treatment ◽  
Liquid Phase ◽  
Case Studies ◽  
Mass Flow ◽  
Measurement Method ◽  
Wastewater Treatment Plants ◽  
Ambient Air ◽  
New Method ◽  
Sewer Systems ◽  
Emission Capacity

Odorous emissions from sewer systems and wastewater treatment plants can cause serious annoyance in the vicinity. Odorants which are present in a liquid phase are emitted into ambient air at the liquid-gaseous interface. The amount and the variation of emitted mass flow of odorants is significantly influenced by the amount of odorants which are present in the liquid. Up to now, however, no measurement method was available to describe this parameter, which can be called “Odorants Emission Capacity”. The paper describes a standardized method of determining the “Odorants Emission Capacity” and shows results and consequences from several case studies where this new method was applied.

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.

Odour control and the planning arena

2000 ◽  
Vol 41 (6) ◽  
pp. 1-8 ◽  
Author(s):  
K. S. Manning ◽  
J. A. Jeavons
Keyword(s):  
Sewage Treatment ◽  
Public Health Issue ◽  
Decision Making Process ◽  
Pollution Potential ◽  
Control Data ◽  
Environmental Impact Assessments ◽  
Odour Control ◽  
Odour Emissions ◽  
Technical Assessment

Odour pollution is traditionally categorised as a public health issue, controlledv, ia statutory legislation with the emphasis on control rather than prevention. As society demands a higher quality environment, odour pollution increases in importance as an amenity issue. Planning authorities can refuse planning permission on the grounds that the odour nuisance from the proposed development will be detrimental to the amenity of the area. Planningauthorities are therefore in the unique position of being able to prevent odour pollution. Potential odour polluters are under increasing pressure to demonstrate to planning authorities that odour has been minimised as far as possible. The communication of technical odour control data and assessments, through mechanisms such as Environmental Impact Assessments (EIA), is becoming an important part of the decision making process. The lack of specific odour policy and guidance within the planning arena is highlighted. The reconstruction of Derby Sewage Treatment works (STW) is used a a case study to highlight how a technical assessment of odour emissions, using the WRc Sewage Treatment Odour Production (STOP) Model can be successfully used within the planning arena to achieve planning permission with no additional conditions.

Odour emission estimates and control strategies using models and sampling for East Bay Municipal Utility District's collection sewage system and wastewater treatment plant

2000 ◽  
Vol 41 (6) ◽  
pp. 65-71
Author(s):  
J. R. Witherspoon ◽  
A. Sidhu ◽  
J. Castleberry ◽  
L. Coleman ◽  
K. Reynolds ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Model Comparison ◽  
Control Strategies ◽  
Treatment Plant ◽  
Sewage System ◽  
Control Options ◽  
East Bay ◽  
Odour Control ◽  
Odour Emissions

For several years, public complaints regarding odours generated by East Bay Municipal Utility District's (EBMUD's) wastewater treatment plant and sewage collection system (SCS) have been increasing. In response, an Odor Control Master Plan was completed to develop near- and long-term odour abatement strategies for their wastewater system. The plan's strategies include using an advisory committee to assist in setting odour threshold levels, prioritizingodour sources, issuing an odour-status newsletter, and reviewing odour control options. The objective is to provide an odour-free community environment at least 99 percent of the year. This paper provides innovative approaches to estimate odour emissions and identify viable odour control options for SCSs through complete wastewater treatment. This paper also presents a CH2M HILL SCS odour model comparison to a comprehensive EBMUD sewage system corrosion study, illustrating that areas having high predicted odours also have high corrosion rates.

scholarly journals DESIGN OF CENTRALIZED WASTEWATER SEWERAGE SYSTEM IN SMALL LENGKANG ISLAND, BATAM CITY, INDONESIA

2020 ◽  
Vol 4 (1) ◽  
pp. 15-24
Keyword(s):  
Sustainable Development ◽  
Wastewater Treatment ◽  
Sustainable Development Goals ◽  
Wastewater Management ◽  
Small Islands ◽  
Collection System ◽  
Sewerage System ◽  
Development Goals ◽  
Infrastructure Services ◽  
Wastewater Collection

One of the small islands within the Indonesia-Singapore border is Lengkang Island. Wastewater collection infrastructure services on Lengkang Island need to be assessed to improve Sustainable Development Goals (SDGs), where access to wastewater services must reach 100%. The purpose of this study is to determine the existing conditions of wastewater management and to plan a centralized wastewater sewerage system on Lengkang Island involving the community. The existing condition shows that all residents channel wastewater into the sea. Only a few houses have toilets, semi-permanent houses on land. Non-permanent houses built on the sea do not have latrines, where stools are dumped directly into the sea. Tripikon-S is one way to overcome the problem of impermanent homes that do not have latrines. Latrine does not provide a solution to the effects of eutropication. Centralized wastewater collection system and wastewater treatment is one way to overcome this. The results of the planning of wastewater collection systems using PVC pipes mentioned the pipe diameter between 32 mm - 60 mm, with a speed of 0.3 m/sec -1.31 m/sec. With this centralized wastewater sewerage system infrastructure, community participation is expected to increase environmentally friendly development.

scholarly journals Planning the optimal solution for wastewater management in rural areas - case study

2018 ◽  
Vol 174 ◽  
pp. 01035 ◽  
Author(s):  
Joanna Boguniewicz-Zablocka ◽  
Iwona Klosok-Bazan ◽  
Andrea G. Capodaglio ◽  
Joanna Ploskonka
Keyword(s):  
Wastewater Treatment ◽  
Rural Areas ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Optimal Solution ◽  
Current Status ◽  
Wastewater Management ◽  
Collection System ◽  
Advantages And Disadvantages

Water management and associated wastewater management is an inseparable element of life and development of modern societies. Collection and treatment of wastewater has a significant impact on the environment and economy, both at the local and global level. It is therefore necessary to proceed to activities that ensure proper wastewater management, especially in rural and low-density areas, where it is necessary to search for optimal solutions with regard to sewage systems, including wastewater treatment plants. One of the solution for wastewater treatment from houses without access to sewerage collection system is the construction of on-site wastewater treatment plants. Construction of on-site wastewater treatment plant poses a number of challenges for municipalities and potential investors and has been discussed by many. Aim of this paper is to draw the current status and perspectives of on-site wastewater treatment systems in Poland, with focus on selected case study from rural areas. The paper presents a way to solve the problem of wastewater management in the municipality of Pietrowice Wielkie using local biological wastewater treatment plants. The article presents technological, technical and economical aspects of the above-mentioned solutions and analysis of the advantages and disadvantages of the system proposed by the municipality.

Odour Emissions and Odour Control at Wastewater Treatment Plants in West Germany

1988 ◽  
Vol 20 (4-5) ◽  
pp. 261-266 ◽  
Author(s):  
F. B. Frechen
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
West Germany ◽  
Air Treatment ◽  
Different Types ◽  
Waste Air ◽  
Local Residents ◽  
Odour Control ◽  
Odour Emissions

Odour emissions caused by wastewater treatment plants can bring serious annoyance to the plant's staff and local residents. A measurement technique is required that corresponds to the human impression of smell. Thus, olfactometry was used to determine the odour strength. Many facts contribute to the formation and release of odorous emissions. Surveys as well as measurement programs indicate that the sludge part of a wastewater treatment plant is the most critical part. Different types of waste air treatment plants are in use in West Germany. Regarding the total amount of waste air to be deodorized, chemical scrubbers play the major role today. Looking at the numbers of plants, bio-filters are most common. Biological waste air treatment systems are of increasing importance in West Germany.

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