sewage treatment process Articles

  • Sludge Blanket Level Detection – making new process opportunities possible

    Much Pulsar's Self-Cleaning Viper Sludge Sensor of the demonstrating the effective maintenance-free solution. discussion around the way we deal with sewage sludge – the way it is moved around the process, the bellmouth valves and decant processes, the downstream treatment of the liquors, important issues around TOTEX and discharge Compliance, plus more recently the ...

  • Nutrient removal for sewage treatment

    Addition of a tertiary process provides one means of upgrading a sewage treatment plant's performance. Hans Wouters looks how this can be done using enhanced ...


    By Paques B.V.

  • Sewage treatment plant

    BONO ARTES has developed an activated sludge process called BIOCLAR, which is a great technological step forwards compared to conventional methods. A large part of civil and industrial installations, especially in developing countries, is located in remote and secluded areas where there is no possibility for connection to a public sewer. On the other hand, the minimisation of the impact on the ...


    By Artes Ingegneria SpA

  • Enhanced physicochemical-biological sewage treatment process in cold regions

    Biological treatment processes give relatively poor pollutant removal efficiencies in cold regions because microbial activity is inhibited at low temperatures. We developed an enhanced physicochemical-biological wastewater treatment process that involves micro-membrane filtration, anaerobic biofilter, and aerobic biofilter to improve the pollutant removal efficiencies that can be achieved under ...


    By IWA Publishing

  • Sewage treatment plant case study

    Contributing to snowy regions in which the transportation of sludge is difficult In municipal wastewater treatment plant in snowy regions, snow-bound in winter, taking dewatered cake out regularly is sometimes difficult. Two problems were also presented in this municipal wastewater treatment plant, i.e., the difficulty of taking sludge out using carriers in winter, which had been ...


    By AMCON Inc.

  • The Municipal Water & Sewage Treatment Sector

    The best reason for the use of Albin Pump Hose pumps in this industry is the low maintenance of the pump. This industry readily accepts an average hose life of 1.500 - 3.000 hours in continuous duty and this hose life will provide much lower maintenance costs and repair time than with other pumps. Basic Pump Requirements For operation in an automatic system the following would ...


    By Albin Pump SAS

  • The Rhizopur® process ten years on: a green solution for sewage treatment in small communities

    Ten years ago the Rhizopur® process was conceived in order to treat sewage from small towns. Since 1999 when the first Rhizopur® plant was commissioned, the number of facilities has been growing steadily and today there are more than fifty Rhizopur® facilities in France. This process combines three existing technologies, i.e. biofilm, infiltration/percolation and mineralisation in constructed ...


    By IWA Publishing

  • Toluene in sewage and sludge in wastewater treatment plants

    Toluene is a compound that often occurs in municipal wastewater ranging from detectable levels up to 237 μg/L. Before the year 2000, the presence of the aromatic hydrocarbons was assigned only to external sources. The Enhanced Biological Nutrients Removal Processes (EBNRP) work according to many different schemes and technologies. For high-efficiency biological denitrification and ...


    By IWA Publishing

  • Kemicond - Improvement of the Dewaterability of Sewage Sludge by Chemical Treatment

    The Kemicond process for sludge conditioning consists of a chemical treatment with sulphuric acid and hydrogen peroxide at a pH-value around 4 followed by a dewatering unit. It is shown that through the chemical treatment of ferruginous digested sludge the dewaterability, measured in laboratory experiments as CST-value, can be improved. From the results of the experiments, it is concluded that ...

  • Energy utilization in sewage treatment – a review with comparisons

    In recent years, the operating cost of sewage treatment plants (STPs) in some parts of the world has been rising due to increases in the cost of energy. STPs have focused on energy reduction and recovery from treatment processes in order to lower energy consumption. The development involves the improvement of capital set-up for treatment plants in terms of equipment upgrading/plant sizing as ...


    By IWA Publishing

  • Gatineau Sewage Treatment Plant, Gatineau, Quebec, Canada

    Project No. 1 Industrial Boiler Application A FLU-ACE waste heat recovery system installed to process all flue gases from three boilers. The system recovers up to 3.5 mmBTU/h of waste heat which is re-used for heating the digester sludge. The main fuel for the boilers is recycled methane based sewage gas generated from the plant’s anaerobic digesters. 'The installation ...

  • Sewage/effluent treatment by growth of diatom algae

    A new process to treat sewage/e²uents, by using Nualgi, a patented product that aids the growth of diatom algae in the waste water is described. The growing diatom algae absorb nutrients and carbon dioxide from the water and produce oxygen by photosynthesis at micro plant level. The oxygen released during photosynthesis helps aerobic bacteria in breaking down the organics and converting the ...


    By Nualgi

  • Ozone treatment of organic micro-pollutants in sewage sludge

    Organic micro-pollutants accumulate to a certain extent in sewage sludge and are therefore ecologically relevant if the sludge is to be reused in both agriculture and landscaping applications. This paper describes the degradation of endocrine-disrupting compounds and other micro-contaminants by means of ozone and ultrasonic treatment. One of the findings is that, as expected, aromatic compounds ...


    By IWA Publishing

  • Dogs put trust in onsite sewage treatment

    One of the obvious challenges of running Dogs Trust rehoming centres is the need to dispose of a significant quantity of hazardous waste. All locations not connected to mains drainage have to be served by reliable on site treatment systems and on completion of the latest installation at Salisbury a total of five WPL systems will be in operation around the UK. The charity cares for some 16,000 ...


    By WPL Ltd

  • An operating tale from næstved sewage treatment plant

    Conversion from a two-stage to a one -stage plant Næstved Central Sewage Treatment Plant was built as a Bio DeNiPho plant to treat 89,000 PE and the load is about 45,000 PE. The results of analyses of the micro pollutants indicated already in 1998 that we would face problems with export to the agriculture segment after 1 July 2000. At the same time the industry started saying that the micro ...


    By Cambi AS

  • Temporary sewage treatment plant for Scottish water at Glenluce

    WPL have a range of portable sewage treatment solutions that can be utilised to replace or augment existing sewage treatment plant. The plant range can be hired or purchased. WPL have considered each stage of the sewage treatment process within their portable range. Primary, secondary and tertiary options are available to meet stringent consent conditions. Background In ...


    By WPL Ltd

  • Analysis of Sewage and Sewage Sludge by Simultaneous ICP Spectroscopy

    In recent years, the development and expansion of sewage treatment facilities has resulted in increased amounts of sludge which is generated in the treatment process, and which has presented a problem due to processing of the sludge itself. Sludge is normally incinerated or solidified and then disposed of in landfills or recycled for use in construction materials such as concrete or ...

  • Computational fluid dynamics simulations of membrane filtration process adapted for water treatment of aerated sewage lagoons

    The aim of this study is to apply the membrane bioreactor technology in an oxidation ditch in submerged conditions. This new wastewater filtration process will benefit rural areas (<5,000 population equivalent) subject to chronic water shortages by reusing this water for irrigation of green areas. For this purpose, the membranes developed without support are immersed in an aeration well ...


    By IWA Publishing

  • Removal of selected steroid estrogens in a sewage treatment plant with Unitank process in Nanjing, China

    This study monitored estrone (E1), 17b-estradiol (E2) and 17a-ethynylestradiol (EE2) concentrations monthly for one year in the influent, effluent and various unit processes of a Unitank-based sewage treatment plant in Nanjing, China. The results showed that the concentrations of E1, E2 and EE2 in influents were 32.4–89.0 ng∙L –1 , 19.4–78.0 ng∙L –1 and 12.3–45.0 ng∙L –1 , ...


    By Inderscience Publishers

  • Design principles to achieve a robust sewage treatment process using rotating biological contactors and reed beds

    Severn Trent Water Ltd. has chosen to adopt rotating biological contactors (RBCs) and reed beds amongst other technologies for treating sewage where the population is less than 2000. The design of an RBC to achieve a fully compliant effluent can be difficult when flows are small or the system is combined and an overflow is not permissible. In addition, RBCs have been plagued by mechanical ...


    By Inderscience Publishers

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