sludge screening Articles

  • Pulp & Paper Water Treatment - A look at optimizing water resource management

    Application Case Study (Pulp/Paper Operations) The pulp and paper industry has traditionally been a consumer of large amounts of fresh water and power. Recently, increased focus has been given to the optimized efficiency of paper mills and to the environmental sustainability footprint of the industry. Therefore, water resource management has become a more critical factor ...

  • Case study - Procurement and installation of a Biogas desulphurization unit at the Chania WWTP

    A proposal based on Bioconservacion’s technology was selected as the winning bid in the public tender released in 2015, covering the design, procurement and construction of a biogas desulfurizing unit to be installed in the waste water treatment plant in Chania, Greece. With a population over 100,000, Chania is the second largest municipality in the Greek island of Crete. Its waste water ...


    By Bioconservacion SA

  • Common Treatment Technologies for Inorganics in Soil, Sediment, and Sludge

    The most commonly used treatment technologies for inorganics in soil, sediment, and sludge include solidification/stabilization (S/S), excavation and off-site disposal, and acid extraction. These treatment technologies are described briefly below. Solidification processes produce monolithic blocks of waste with high structural integrity. The contaminants do not necessarily interact chemically ...

  • Metagenomic screening for bleomycin resistance genes {triangledown}

    A metagenomic library of activated sludge was screened for bleomycin resistance genes. Two genes were identified that differed greatly from each other, from the genes of bleomycin-producing actinomycetes, and from those of clinical isolates. Therefore, the nonclinical environment is a rich reservoir of new resistance elements, and metagenomics can be used to sample the resistome rapidly. ...

  • Land remediation & sludge processing case study

    In late 2009 the company was approached by a London based consultancy on behalf of their clients with oil and gas interests in an Eastern European country. The brief was to supply a technology that could assist in the clean-up of historical oil spills around redundant oil wells in a working oilfield. Our initial meeting led us to believe that this was a viable contract and following several ...

  • Ex Situ Biological Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatment is that it generally requires shorter time periods than in situ treatment, and there is more certainty about the uniformity of treatment because of the ability to homogenize, screen, and continuously mix the soil. However, ex situ treatment requires excavation of soils, leading to increased costs and engineering for equipment, possible permitting, and ...

  • Ex Situ Thermal Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatments is that they generally require shorter time periods, and there is more certainty about the uniformity of treatment because of the ability to screen, homogenize, and continuously mix the soils. Ex situ processes, however, require excavation of soils leading to increased costs and engineering for equipment, possible permitting, and materials handling worker ...

  • The Dangers of Uncalibrated Activated Sludge Simulation Packages

    ABSTRACTActivated sludge simulation packages are useful tools, but it can be dangerous to rely on them ifthey are used incorrectly. How dangerous? To determine potential pitfalls, we compared theactivated sludge tank volumes predicted by three simulation packages used directly out-of-theboxwithout calibration. We sought to identify the underlying reason for differences in predictedrequired ...

  • SaniTEE: an ideal septic tank wastewater screen

    SaniTEE is an effluent wastewater screen (commonly known as an effluent filter) that reduces the gross suspended solids discharged in septic tank effluent. This helps extend the lives of drain fields, reduces clogging of orifices in effluent disposal systems, and allows use of non-solids handling effluent pumps. It is shown in Figure 1. It fits inside a standard septic tank outlet tee by dropping ...


    By Bio-Microbics, Inc.

  • Processing Wastewater Sludge Using Dewatering Containers

    The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...


    By Flo Trend® Systems, Inc.

  • Isolation of Extra Cellular Biopolymer Producing Microorganisms from Wastewater Sludge for Sludge Settling and Dewatering

    Sludge settling and dewatering are carried out by employing cationic synthetic polymer (CSP) in municipal and industrial wastewater treatment plant. CSP are expensive and further pollute the environment, hence to address these problems bioflocculation of sludge was examined in this study. Microorganisms were isolated from municipal and industrial wastewater sludges and six extracellular polymeric ...

  • Biodegradation of total petroleum hydrocarbon (TPH) in Jordanian petroleum sludge

    Bioremediation, or the use of micro-organisms to decontaminate soil or groundwater, is being increasingly seen as an effective, environment-friendly treatment for oil-contaminated sites. In this study, the results are presented concerning a laboratory screening of several natural bacterial consortia and laboratory tests to establish the performance in degradation of hydrocarbons contained in oily ...


    By Inderscience Publishers

  • Ex Situ Physical/Chemical Treatment for Soil, Sediment, and Sludge

    The main advantage of ex situ treatment is that it generally requires shorter time periods than in situ treatment, and there is more certainty about the uniformity of treatment because of the ability to homogenize, screen, and continuously mix the soil. Ex situ treatment, however, requires excavation of soils, leading to increased costs and engineering for equipment, possible permitting, and ...

  • Integration of thermal hydrolysis into sludge treatment at cottonvalley WwTW, milton keynes

    The paper is a case study of the construction, commissioning and operation of a new 21,000 tonnes dry solids per annum sludge treatment centre at Anglian Water’s wastewater treatment works at Cottonvalley, Milton Keynes. The construction of the new sludge treatment centre was completed in summer 2008 and is part of Anglian Water’s £95 million AMP5 biosolids programme to provide treatment capacity ...


    By Cambi AS

  • Control of Microthrix parvicella and sludge bulking by ozone in a full-scale WWTP

    Bulking and rising sludge are common problems in wastewater treatment plants (WWTPs) and are primarily caused by increased growth of filamentous bacteria such as Microthrix parvicella. It has a negative impact on sludge settling properties in activated sludge (AS) process, in addition to being responsible for foam formation. Different methods can be used to control sludge bulking. The aim of ...


    By IWA Publishing

  • Impact of activated sludge process configuration on removal of micropollutants and estrogenicity

    The efficacy of three different wastewater treatment configurations, conventional activated sludge (CAS), nitrifying activated sludge (NAS) and biological nutrient removal (BNR) for removal of selected micropollutants from authentic wastewater was investigated. The processes were also characterized based on their proficiency to reduce the estrogenic activity of the influent wastewater using the ...


    By IWA Publishing

  • New technology for sludge management reduces waste to landfill by 80%

    The first batch of results from a new sludge management and waste reduction system at Severn Trent's Coleshill Sewage Treatment Works in Birmingham, England show a consistent 80% reduction in waste to landfill volumes. The DMax system has specifically been developed by CDE Ireland Ltd to process a variety of wastes as detailed below. This list is not exhaustive and represents the material for ...


    By CDEnviro

  • Spreadsheet Implementation of Activated Sludge Model #1 for Sequencing Batch Reactors

     KEYWORDS Sequencing Batch Reactor, Simulation Modeling, ASM1, Flow Routing BACKGROUND Many small municipal wastewater treatment plants in North America use sequencing batch reactors (SBR) to provide secondary treatment. SBRs are a fill-and-draw variant of the activated sludge process in which a single reactor is used to mix raw ...

  • Case study - Monitoring sewage sludge AD for Southern Water

    To check sludge AD, Southern Water uses portable biogas analysers specially developed for AD biogas and based on proven methane and associated gas analysis equipment from Geotech. Southern Water has an important routine; every single day it checks the health of its sewage sludge anaerobic digesters on eighteen sites across Hampshire, IoW, Sussex and Kent. There, each day Southern Water ...


    By Geotech

  • Reduction of Solvent Use in Cleaning of Printing Screens: Cutler Brands

     The installation of new cleaning equipment at Cutler Brands printing works in Adelaide, South Australia, has resulted in a 40 percent reduction in cleaning solvent used and an annual saving of almost $165,000. Not only was the investment of $45,000 recouped in 4 months through savings and increased productivity, but exposure of employees to hazardous fumes and chemicals substantially ...


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