scholarly journals Versatility of the MAnure PHosphorus EXtraction (MAPHEX) System in Removing Phosphorus, Odor, Microbes, and Alkalinity from Dairy Manures: A Four-Farm Case Study

2018 ◽  
Vol 34 (3) ◽  
pp. 567-572 ◽  
Author(s):  
Clinton D. Church ◽  
Alexander N. Hristov ◽  
Peter J.A. Kleinman ◽  
Sarah K. Fishel ◽  
Michael R. Reiner ◽  
...  
Keyword(s):  
Water Quality ◽  
Chemical Treatment ◽  
Organic Material ◽  
Animal Manure ◽  
Dairy Manure ◽  
Full Scale ◽  
Wide Range ◽  
Phosphorus Extraction ◽  
Over Time

Abstract. Animal manure contains nutrients [primarily nitrogen (N) and phosphorus (P)] and organic material that are beneficial to crops. Unfortunately, for economic and logistics reasons, most manure tends to be applied to soils near where it is generated. Over time P concentrations in soils where dairy manure is applied builds up, often in excess of crop demands, and its potential loss in runoff poses a risk to water quality. We previously described, and have subsequently built, a full-scale version of a MAnure PHosphorus EXtraction (MAPHEX) System capable of removing greater than 90% of the P from manures. While originally designed to remove phosphorus, we postulated that the MAPHEX System was also capable of removing odor and microbes, and of concentrating alkalinity into a solid, economically transported form. In this study the MAPHEX System was shown to be highly versatile at removing greater than 90% of the phosphorus from a wide range of dairy manures. In addition, the study showed that the System is also capable of concentrating and recovering alkalinity from manures, while also removing over 80% of microbes and reducing the odor of the effluent applied to fields by half. Keywords: Alkalinity, Chemical treatment, Manure, Microbes, Odor, Phosphorus, Treatment systems, Solid separation.

scholarly journals Designing a Pond and Evaluating its Impact Upon Storm-Water Quality and Flow: A Case Study in Rural Australia

2019 ◽  
Vol 26 (3) ◽  
pp. 475-491
Author(s):  
Zahra Ghofrani ◽  
Victor Sposito ◽  
Robert Faggian
Keyword(s):  
Water Quality ◽  
Green Infrastructure ◽  
Suspended Solids ◽  
Peak Flow ◽  
Storm Water ◽  
Weather Event ◽  
Natural Systems ◽  
Wide Range ◽  
Rural Australia

Abstract Storm-water management is a common concern in rural catchments where development-related growth causes increases of storm-water flows. Greater magnitude and frequency of storm-water create greater challenges for mitigating storm-water damage and improving water quality. The concept of Blue-Green Infrastructure (BGI) as a solution incorporates a wide range of applicable components with the aim of minimizing the effect of catchment development on flow regimes without changing the watershed morphology. BGI components manage storm-water by decreasing impermeable cover and expanding natural and semi-natural systems to store water or recharge and filter storm-water into the ground. In this paper, guidelines for designing a pond as a component of BGI are provided and, configuration and size of the pond are determined. Moreover, the impacts of the designed pond on storm-water peak flow and quality are assessed for the Tarwin catchment, State of Victoria, Australia. The results indicate that the introduction of the pond would have reduced outfall inflow by 94 % and would have achieved the reduction of 88.3, 75.5 and 50.7 % for total suspended solids, total phosphorus, and total nitrogen respectively, during the extreme weather event in June 2012.

scholarly journals Pilot-Scale Investigation of Phosphorus Removal from Swine Manure by the MAnure PHosphorus EXtraction (MAPHEX) System

2020 ◽  
Vol 36 (4) ◽  
pp. 525-531
Author(s):  
Clinton D. Church ◽  
Sarah K. Fishel ◽  
Michael R. Reiner ◽  
Peter J.A. Kleinman ◽  
Alexander N. Hristov ◽  
...  
Keyword(s):  
Organic Material ◽  
Phosphorus Removal ◽  
Swine Manure ◽  
Scaling Up ◽  
Pilot Scale ◽  
Dairy Manure ◽  
Treatment Costs ◽  
List Type ◽  
Capital Equipment ◽  
Phosphorus Extraction

Highlights Swine manure contains nutrients and organic material that is beneficial to crops. Farmers are under increasing pressure and regulation to not apply high phosphorus manure to soils. The MAPHEX System removed greater than 96% of the phosphorus in swine manures. Both capital equipment and treatment costs were lower for swine manure than dairy manure. Abstract . Swine manure is typically in slurry form and contains nitrogen (N), phosphorus (P), and organic material that is beneficial to crops. Unfortunately, for economic and logistical reasons, manure tends to be applied to soils near where it is produced and P concentrations increase to the point that they are often in excess of crop demands. With the implication that runoff of excess P contributes to eutrophication of streams and other water bodies, farmers are experiencing increasing pressures and regulation to not apply manure to those soils. We previously reported on an invention capable of removing P from dairy manures. This pilot-scale study shows that the MAPHEX System can remove greater than 96% of the phosphorus in swine manures, and strongly suggests that, once scaled up, the essentially P free effluent could be beneficially used for fertigation without further loading the receiving soils with P. This scaling up has the potential to reduce storage volumes to allow for mitigation of overflow problems during large storms. Furthermore, this study suggests that capital equipment costs and treatment costs for swine manure would be lower than for treating dairy manure. Keywords: Chemical treatment, Manure, Phosphorus, Solid separation, Swine, Treatment systems.

scholarly journals Tailings Filtration Using Viper Filtration Technology—a Case Study

2021 ◽  
Author(s):  
Oliver Whatnall ◽  
Kevin Barber ◽  
Peter Robinson
Keyword(s):  
Large Scale ◽  
Full Scale ◽  
Plant Design ◽  
Design Data ◽  
Pilot Testing ◽  
Performance Improvements ◽  
Wide Range ◽  
Vacuum Belt ◽  
Filtration Technology

AbstractInvestigation and uptake of filtered tailings continues to grow throughout the globe. This is driven by a wide range of site-specific considerations, which include such factors as tailings characteristics (e.g., amenability to filtration), production rates, climate, water availability, cost drivers, environmental requirements, and social factors. Despite the aforementioned technological growth, the currently available filtration technology is not able to meet the needs of many operations and projects that would otherwise adopt the technology. Experience with large-scale industrial filtration shows that vacuum belt filter systems meet the needs of many modern users, exceptions being the inability to effectively dewater tailings at altitude and/or with a fine particle size distribution: a potential fatal flaw. This paper presents a case study on the utilization of the patented Viper Filtration technology on gold tailings to overcome this challenge and shares the resultant full-scale plant design, highlighting the features designed to overcome cost and scalability deterrents. This technology is a novel mechanical process which complements the vacuum pressure in dewatering the filter cake as it travels along the belt filter. This project commenced with a pilot testing program, which successfully met the objective to rigorously test, measure and record any performance improvements achieved when engaging the Viper technology. Of the two tailings products tested, gross improvements of 4.2%w/w and 5.7%w/w were achieved when compared to the conventional vacuum belt filter operation. This pilot testing facilitated measurement of operating and design data, which forms the basis of the full-scale system design and resultant equipment supply of three vibration roller assemblies for retro-fitting on the existing vacuum belt filter.

scholarly journals Sustainability metrics for commercial buildings in Sweden

2018 ◽  
Vol 36 (5) ◽  
pp. 521-543
Author(s):  
David Olof Fredrik Sundfors ◽  
Magnus Bonde
Keyword(s):  
Real Estate ◽  
Green Building ◽  
Commercial Buildings ◽  
Indoor Climate ◽  
Actual Performance ◽  
Content Type ◽  
Starting Point ◽  
Wide Range ◽  
Over Time

Purpose Environmental rating systems typically focus on building characteristics at a specific point in time; but from investment and valuation perspectives, actual performance over time should be the most important thing. Newly constructed commercial buildings today usually come with a high degree of technically advanced installations and a wide range of monitoring possibilities. This provides us with the possibility of monitoring a building’s in-use performance. The purpose of this paper is to investigate how frontrunners in the Swedish green building market actually monitor their new buildings, and look for similarities in that area. Design/methodology/approach By investigating a selected case study, conducting a survey and follow-up interviews among Swedish real estate companies and finally studying the available industry information, this paper considers what key performance indicators real estate developers choose to monitor as well as how they go about collecting and using the data. By doing this, we can get an idea of what is already monitored and to what extent. The case study also provides an insight into what is technologically possible. Findings A comparison of the gathered data from this study is then made with information that investors and property valuers would be expected to be interested in. The results show that these data are, to a large extent, information that the frontrunners already gather, but it is not made publicly available. One area where important information is lacking, however, is data about indoor climate. Research limitations/implications The study is solely focussed on commercial buildings in Sweden and also on real estate owners with a high sustainability profile. Originality/value This paper presents a starting point in introducing the research area of the continued sustainability performance of our built environment. In order to understand and improve the environmental performance over time of our buildings and the connection to potential value, it is important to know what we can and should monitor.

Surface Water Quality Assessment. Case Study: Târnava Mare River, Mediaș Town-Romania

2011 ◽  
Vol 4 (5) ◽  
pp. 70-72
Author(s):  
Cristina Roşu ◽  
◽  
Ioana Piştea ◽  
Carmen Roba ◽  
Mihaela Mihu ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Quality Assessment ◽  
Surface Water Quality ◽  
Water Quality Assessment

Manufacture of full-scale geopolymer cement concrete components: A case study to highlight opportunities and challenges

PCI Journal ◽  
2015 ◽  
Vol 60 (6) ◽  
pp. 39-50 ◽  
Author(s):  
Brett Tempest ◽  
Clarke Snell ◽  
Thomas Gentry ◽  
Maria Trejo ◽  
Keith Isherwood
Keyword(s):  
Full Scale ◽  
Cement Concrete ◽  
Geopolymer Cement

When Culturally Significant Songs are Decontextualised: The Initiation Song Somagwaza, A Case Study

2018 ◽  
Vol 28 (2) ◽  
Author(s):  
T Dowling ◽  
Somikazi Deyi ◽  
Anele Gobodwana
Keyword(s):  
Qualitative Research ◽  
Comparative Method ◽  
Popular Song ◽  
Focus Group Discussions ◽  
Group Discussions ◽  
Ritual Music ◽  
Constant Comparative Method ◽  
Small Focus ◽  
Over Time

While there have been a number of studies on the decontextualisation and secularisation of traditional ritual music in America, Taiwan and other parts of the globe, very little has been written on the processes and transformations that South Africa’s indigenous ceremonial songs go through over time. This study was prompted by the authors’ interest in, and engagement with the Xhosa initiation song Somagwaza, which has been re-imagined as a popular song, but has also purportedly found its way into other religious spaces. In this article, we attempted to investigate the extent to which the song Somagwaza is still associated with the Xhosa initiation ritual and to analyse evidence of it being decontextualised and secularised in contemporary South Africa. Our methodology included an examination of the various academic treatments of the song, an analysis of the lyrics of a popular song, bearing the same name, holding small focus group discussions, and distributing questionnaires to speakers of isiXhosa on the topic of the song. The data gathered were analysed using the constant comparative method of analysing qualitative research.

IMPACT OF INDUSTRIAL EFFLUENTS ON GROUND WATER QUALITY- A CASE STUDY OF GUJRANWALA, PAKISTAN

2018 ◽  
Vol 2 (1) ◽  
pp. 18-20 ◽  
Author(s):  
Muhammad Usman ◽  
Mian Bilal Khalid ◽  
Hafsa Yasin ◽  
Abdul Nasir, ◽  
Ch Arslan
Keyword(s):  
Water Quality ◽  
Ground Water ◽  
Industrial Effluents ◽  
Ground Water Quality

STABILIZING EFFECT OF WWTP DISCHARGE ON WATER QUALITY AND FISH ASSEMBLAGE STRUCTURE. A CASE STUDY

2016 ◽  
Vol 15 (7) ◽  
pp. 1561-1570 ◽  
Author(s):  
Peter Takacs ◽  
Edina Balogh ◽  
Tibor Eros ◽  
Sandor Alex Nagy
Keyword(s):  
Water Quality ◽  
Fish Assemblage ◽  
Assemblage Structure ◽  
Fish Assemblage Structure ◽  
Stabilizing Effect

Establishment of Method for Identification of Water Quality in Fire-Tube Boiler - A Case Study for UTHM Biodiesel Plant's Boiler

2019 ◽  
Vol 11 (5) ◽  
Author(s):  
Kamal N. M. A. N. M. ◽  
◽  
Nasir N. F. ◽  
Abdul Patar M. A. ◽  
Seis M. F. ◽  
...  
Keyword(s):  
Water Quality ◽  
In Fire
Sign in / Sign up

Export Citation Format

Share Document