Tracking Legionella in air generated from a biological treatment plant: a case study of the outbreak of legionellosis in Norway

2011 ◽  
Author(s):  
Janet M. Blatny ◽  
Jaran S. Olsen ◽  
Øyvind Andreassen ◽  
Viggo Waagen ◽  
Bjørn Anders P. Reif
Keyword(s):  
Biological Treatment ◽  
Treatment Plant

scholarly journals Biological treatment of landfill leachate: efford landfill, Hampshire, UK - a case study

2019 ◽  
pp. 377-387
Author(s):  
Steve Last ◽  
Jonty Olufsen ◽  
Howard Robinson
Keyword(s):  
United Kingdom ◽  
Biological Treatment ◽  
Batch Reactor ◽  
Treatment Plant ◽  
Treatment Technique ◽  
Leachate Treatment ◽  
Best Available Techniques ◽  
The United Kingdom ◽  
N Removal

Demand for of on-site treatment schemes that are capable of treating landfill leachates to highstandards has grown substantially during the last two decades. Increasingly, plants are beingrequired to discharge high quality effluents directly into surface watercourses, or to provide ahigh degree of treatment prior to discharge into the public sewerage system. This trend is certainto continue - primarily driven in the United Kingdom in recent months by the requirements of theEU IPPC Directive, which demands the application of Best Available Techniques (BAT), and bythe EU Water Framework Directive.Aerobic biological treatment of leachate from domestic landfills has widely been shown to be themost appropriate, reliable and successful treatment technique to consistently meet stringentdischarge constraints with minimal operator input. The cost of this technology is also oftenfavourable, when compared with alternative processes. More than 50 plants of this type arecurrently operational in the United Kingdom, making it by far the most widely adopted on-sitetreatment technology, and many other examples exist overseas.This paper provides a detailed case study of the design, construction and commissioning of abiological, Sequencing Batch Reactor (SBR) leachate treatment plant for Hampshire CountyCouncil, at Efford Landfill Site in the New Forest in Hampshire, UK.Since plant commissioning was completed by the authors during early 2003, extensive anddetailed monitoring data have been collected. These are presented for the plant, which is capable 3 of treating up to 150 m /day of strong methanogenic leachate (ammoniacal-N from 600-1 000mg/1), and are compared with treatment performances achieved at other full-scale leachatetreatment plants. The paper shows 80D5 and ammoniacal-N removal efficiencies in excess of99%.Results also show the efficiency of polishing treatment in a reed bed, before discharge of finaleffluent to public sewer.

scholarly journals Contaminants of Emerging Concern Removal in an Effluent of Wastewater Treatment Plant under Biological and Continuous Mode Ultrafiltration Treatment

2020 ◽  
Vol 12 (2) ◽  
pp. 725 ◽  
Author(s):  
Cristian Ferreiro ◽  
Iker Gómez-Motos ◽  
José Ignacio Lombraña ◽  
Ana de Luis ◽  
Natalia Villota ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Biological Treatment ◽  
Food Additives ◽  
Treatment Plant ◽  
Pharmaceutical Products ◽  
Contaminants Of Emerging Concern ◽  
Removal Rates ◽  
Wide Range

This work presents a case study of a wastewater treatment plant (WWTP), located in Biscay (Spain), in which the removal of high-occurrence contaminants of emerging concern (CEC) was studied. The existing biological treatment in the WWTP was complemented with a continuous ultrafiltration (c-UF) pilot plant, as a tertiary treatment. Thus, the effect on CEC removal of both treatments could be analyzed globally and after each operation. A total of 39 CEC were monitored, including pharmaceutical products, industrial additives, food additives, herbicides and personal care products. For evaluation of the efficiencies, the removal rates of the biological and of the c-UF treatments, including their variability over a day and a week in relation to the ammonium content, were examined in the influent of the WWTP. In the biological treatment, a wide range of different removal rates was obtained due to the different CEC’s biodegradability and concentration. In UF, lower, but more constant removal rates, were achieved. In addition, the reduction of the general toxicity by the UF treatment in terms of the Microtox® toxicity assay was also evaluated. After UF, all of the samples yielded values of TU50 lower than 1, confirming this result the UF effectiveness for toxicity removal.

Upgrading a Large Municipal Sewage Treatment Plant by a Combination of Biological and Chemical Processes

1990 ◽  
Vol 22 (7-8) ◽  
pp. 105-112 ◽  
Author(s):  
H. H. Hahn ◽  
E. Hoffmann ◽  
A. Kleinschmidt ◽  
R. Klute
Keyword(s):  
Biological Treatment ◽  
Structural Changes ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Chemical Processes ◽  
Plant Performance ◽  
Municipal Sewage ◽  
The Past

The Standards controlling sewage treatment are continuously in development. Thus, upgrading existing plants is a frequently encountered problem. In the past this meant structural changes, mostly in terms of enlargement of existing facilities or addition of new units. More recently the possibilities of improving plant performance through chemicals addition (inducing precipitation and coagulation) with or without intensified biological treatment have been explored. Chemicals addition has become necessary in many instances due to the tightening of standards for phosphorous concentrations in the plant effluent. The present discussion is based on a case study where possibilities and limits of chemical and/or biological upgrading have been investigated. The analysis showed that neither chemical stages nor secondary biological stages alone can guarantee the effluent standards formulated by the water authorities.

Reduksi Energi Pengolahan Air Limbah di Kawasan Industri Dengan Implementasi Teknologi Food Chain Reactor (Studi Kasus : Kawasan Industri Jababeka Bekasi)

2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Temmy Wikaningrum ◽  
Rijal Hakiki
Keyword(s):  
Energy Consumption ◽  
Food Chain ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Industrial Area ◽  
Oxidation Ditch ◽  
Cost Component ◽  
Food Industries ◽  
Treatment Processes

Biological-aerobic process is a technology that is often chosen to treat wastewater in industrial areas, especially industries related to food industries. Compared to chemical treatment and advanced treatment, biological treatment is relatively more efficient in the costs required. However, in conventional biological treatment the amount of energy consumption in the process is a major cost component that it becomes one of the challenges in implementing this technology. This paper contains a review of the implementation of the Food Chain Reactor (FCR) technology in treating industrial area wastewater, focusing on an overview of energy consumption compared to conventional biological-aerobic treatment of oxidation ditch (OD). FCR is a wastewater treatment plant (IPAL) that combines Integrated Fixed Film Activated Sludge (IFAS) technology and technology that resembles Constructed Wetland, thus enabling the simultaneous physical, biological and biochemical treatment processes within the reactor. In this case study, the implementation succeeded in showing a reduction in energy consumption by 46.4% while maintaining an efficiency decrease in BOD by 83% and efficiency in decreasing ammonia by 82%. As with the OD process, in this FCR study showed that the denitrification process has not been successful.

scholarly journals Case Study: Regional Supply of Fuel to Cement Industry – Evalutaion of a Regional Waste Treatment

2017 ◽  
pp. 598-606
Author(s):  
Peter Mellbo
Keyword(s):  
Solid Waste ◽  
Biological Treatment ◽  
Evaluation Method ◽  
Waste Treatment ◽  
Treatment Plant ◽  
Point Of View ◽  
Cement Industry ◽  
Waste Hierarchy ◽  
Refuse Derived Fuel

In 2005, 49 million tonnes of municipal solid waste (MSW) were incinerated in conventional incineration plants (CWI-plants) in Europe. There are, however, alternatives to treating solid waste in CWI-plants. By treating the solid waste in a mechanical-biological treatment plant (MBT-plant) or in a mechanical treatment plant (MT-plant) the solid waste can be sorted into fractions of combustible matter, inert matter and metals. The sorted combustible matter (refuse-derived fuel, RDF) can be used for co-incineration in e.g. cement kilns. This study comprises an environmental economic evaluation of treatment of solid waste in a CWI-plant or treatment in a MBT-plant or a MT-plant, followed by incineration of produced RDF at a regional cement industry. The evaluation was made with an evaluation method, in which criteria were quantified or valuated. The aim of this study was to identify the economic and environmental effects of a regional treatment of solid waste. The study shows that a treatment of solid waste in a MT-plant is the best scenario from an environmental economical point of view, while a treatment and incineration in a CWI-plant is the worst scenario. The study clearly shows that KSRR and the environment has a lot to gain if the treatment of solid waste in the future is changed from treatment and incineration in a CWI-plant to a treatment in a MT-plant, where produced RDF is incinerated at the regional cement industry. It also shows that treatment in a MBT-plant or a MT-plant follows the waste hierarchy to a better extent, compared to treatment and incineration in a CWI-plant.

Joint Treatment of Industrial Effluent: Case Study of Limassol Industrial Estate

1994 ◽  
Vol 29 (9) ◽  
pp. 99-104 ◽  
Author(s):  
I. Hadjivassilis ◽  
L. Tebai ◽  
M. Nicolaou
Keyword(s):  
Biological Treatment ◽  
Industrial Effluent ◽  
Treatment Plant ◽  
Biological Sludge ◽  
Sludge Stabilization ◽  
Industrial Estate ◽  
Treated Effluent ◽  
Chemical Sludge

The treatment plant has been designed and installed for the treatment of wastewater discharged from various industries at Limassol Industrial Estate. The total daily flow and biological load after the last extension of the plant are 1000-1200m3/d and 220-264kg BOD5/d respectively. Chemical treatment followed by biological treatment is applied. The main steps of the treatment process are as follows: equalization, flotation, coagulation-flocculation, settlement of chemical sludge, pH-adjustment, nutrient addition, aeration of activated sludge, settlement of biological sludge, chlorination and sludge stabilization. The efficiency of the plant with respect to BOD5 and COD removal is over 90%. The quality of the treated effluent is BOD5 < 15mg/l and COD < 40mg/l. The concentration of trace elements are below the recommended limits for reclaimed water used for irrigation purposes.

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.

The Implementation of Biological Phosphorus and Nitrogen Removal with the Bio-Denipho Process on a 265,000 PE Treatment Plant

1992 ◽  
Vol 25 (4-5) ◽  
pp. 161-168 ◽  
Author(s):  
J. Einfeldt
Keyword(s):  
Nitrogen Removal ◽  
Treatment Plant ◽  
First Year ◽  
In Series ◽  
Design Loads ◽  
Last Stage ◽  
Two Stages ◽  
The City ◽  
Biological Phosphorus

A process, called Bio-Denipho, for combined biological phosphorus and nitrogen removal in a combination of an anaerobic tank and two oxidation ditches is described. In this process the anaerobic tank consisting of three sections working in series is followed by two oxidation ditches. These too are working in series, but with both inlet to and outlet from the tanks changing in a cycle. The Bio-Denipho process is described specifically for the process itself and as a case study for the implementation of the process on a 265,000 pe wastewater treatment plant for the city of Aalborg in Denmark. The plant was designed and erected in two stages and the last stage was inaugurated October 31,1989. Lay-out and functions for the plant is described and design loads, plan lay-out and tank volumes are given in this paper together with performance data for the first year in operation.

Use of chemical upgrading (CU) in Hungary and Slovakia

1994 ◽  
Vol 30 (5) ◽  
pp. 87-95 ◽  
Author(s):  
Susan E. Murcott ◽  
Donald R. F. Harleman
Keyword(s):  
Wastewater Treatment ◽  
Biological Treatment ◽  
Treatment Plant ◽  
Domestic Sewage ◽  
Metal Salts ◽  
Plant Performance ◽  
Eastern European ◽  
Low Doses ◽  
The Past ◽  
Treatment Technologies

In the past decade, the development of polymers and new chemical technologies has opened the way to using low doses of chemicals in wastewater treatment. “Chemical upgrading” (CU) is defined in this paper as an application of these chemical technologies to upgrade overloaded treatment systems (typically consisting of conventional primary plus biological treatment) in Central and Eastern European (CEE) countries. Although some of the chemical treatment technologies are proven ones in North America, Scandinavia, and Germany, a host of factors, for example, the variations in composition and degree of pollution, the type of technologies in use, the type and mix of industrial and domestic sewage, and the amount of surface water, had meant that the viability of using CU in CEE countries was unknown. This report describes the first jar tests of CU conducted during the summer of 1993. The experiments show CU's ability to improve wastewater treatment plant performance and to potentially assist in the significant problem of overloaded treatment plants. Increased removal of BOD, TSS, and P in the primary stage of treatment is obtained at overflow rates above 1.5 m/h, using reasonably priced, local sources of metal salts in concentrations of 25 to 50 mg/l without polymers.

Sign in / Sign up

Export Citation Format

Share Document