settler Articles

  • Stormwater and lamella settlers: efficiency and reality

    ABSTRACTTwo settling devices treating rainwater from urban drainage areas and equipped with secondary sludge treatment were monitored over a period exceeding one year. The two devices differ in their design and in the quantity and quality of effluents received. Full analyses over approximately 30 mean samples of the intake and discharge effluents allowed judgment of the mean efficiency of ...


    By IWA Publishing

  • Mumbai Refinery Mahaul (BPCL) API settlers

    API Settlers DEWACO deployed a complete sludge removal system consisting of: 16 nos. Chain and Flight type sludge and scum collectors and 28 nos. Scum pipes . 3 nos. 21 x 2,5 3 nos. 21 x 2,5 2 nos. 18 x 4,6 3 nos. 18 x 6,1 5 nos. 18 x 6,1 Project completion: 2008 ...


    By Dewaco Ltd

  • Inclined Plate Settlers to Treat Stormwater Solids

    ABSTRACTIt has been well-documented that, in stormwater runoff, many of the problem pollutants are associated with the particulate fraction. Past characterization of urban runoff and source contributions has shown the following: (a) soil disturbance increased the TSS and turbidity in the runoff; and (b) correlations were observed between TSS and particulate runoff concentrations of chromium, ...

  • 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

  • Seven Ways Your Facility Isn’t Meeting Effluent Regulations and How to Solve Them

    Whether you own, operate, or help manage a municipal or industrial facility that deals with wastewater, it’s important to understand how wastewater treatment can play a significant role in the overall health of your business, especially when it comes to meeting effluent regulations. This is an important part of the wastewater treatment process to consider, as ignoring it could earn your ...


    By SAMCO Technologies, Inc.

  • Enhancement of settling tank capacity using a new type of tube settler

    The effectiveness of a newly developed lamellar settler was confirmed by onsite experiments. The device had inclined parallel plates arranged in a vertical direction in a settling tank. This vertical arrangement method enables many more plates to be set compared to the conventional horizontal arrangement. As an original and distinctive innovation, both the right and left edges of the plates were ...


    By IWA Publishing

  • Lamella settlers for storm water treatment – performance and design recommendations

    Three lamella settlers were monitored over a period of 4 years. The main objective was to determine removal efficiencies for total suspended solids and associated pollutants. For this purpose a new sampling method based on large volume solid samplers was developed allowing a detailed analysis of solids. With regard to total suspended solids the average removal efficiency of the plants range from ...


    By IWA Publishing

  • Modelling and characterization of primary settlers in view of whole plant and resource recovery modelling

    Characterization and modelling of primary settlers have been neglected pretty much to date. However, whole plant and resource recovery modelling requires primary settler model development, as current models lack detail in describing the dynamics and the diversity of the removal process for different particulate fractions. This paper focuses on the improved modelling and experimental ...


    By IWA Publishing

  • Impact on sludge inventory and control strategies using the benchmark simulation model no. 1 with the Bürger-Diehl settler model

    An improved one-dimensional (1-D) model for the secondary clarifier, i.e. the Bürger-Diehl model, was recently presented. The decisive difference to traditional layer models is that every detail of the implementation is in accordance with the theory of partial differential equations. The Bürger-Diehl model allows accounting for hindered and compressive settling as well as inlet ...


    By IWA Publishing

  • Shall we upgrade one-dimensional secondary settler models used in WWTP simulators? – An assessment of model structure uncertainty and its propagation

    In WWTP models, the accurate assessment of solids inventory in bioreactors equipped with solid-liquid separators, mostly described using one-dimensional (1-D) secondary settling tank (SST) models, is the most fundamental requirement of any calibration procedure. Scientific knowledge on characterising particulate organics in wastewater and on bacteria growth is well-established, whereas 1-D SST ...


    By IWA Publishing

  • Kimre Inc. LIQUI-NOMIX oil-water separators

    Liquid - liquid mixtures of contaminant oils (or organic solvents) in water (or aqueous solvents) can be separated economically and efficiently with gravity settlers or decanters. To achieve high efficiency separations, the settling unit must include a coalescing stage for removal of small droplets of oil. Kimre Inc.'s LIQUI-NOMIX coalescers provide high efficiency polishing of liquid streams and ...


    By Kimre, Inc.

  • MIEX Resin Water Treatment Process

    The MIEX®1 Resin process was developed in Australia for the removal of natural organic material in water treatment. This novel, truly continuous ion exchange process, is based on the MIEX® resin – a micro size, macroporous, strong base, magnetic ion exchange resin. The resin was specially developed for this application and optimised for reversible removal of negatively charged organic ions. The ...


    By IXOM Watercare

  • Evaluation of DEWATS in Java, Indonesia

    Under the Indonesian PPSP (Accelerated Sanitation Development for Human Settlements Program) thousands of new DEWATS (Decentralized Wastewater Treatment Systems) may be realized in the coming five years. Taking the massive scale of planned implementation into consideration an evaluation of the technical and financial-economic aspects and users' involvement for three different types of ...


    By IWA Publishing

  • Sludge reduction and performance analysis of a modified sludge reduction process

    A modified sludge process reduction activated sludge (SPRAS) technology was developed by inserting a sludge process reduction (SPR) module, composed of an aeration tank and a settler, before the activated sludge system was proposed in this study. Compared with the anaerobic/anoxic/aerobic (AAO) process, the SPRAS resulted in a remarkable decrease in sludge production by 76.6%; sludge ...


    By IWA Publishing

  • Settlement Dynamics of the Encrusting Epibenthic Macrofauna in Two Creeks of the Caeté Mangrove Estuary (North Brazil)

    Abstract  The epibenthic encrusting fauna of 2 creeks of the Caeté mangrove estuary, northern Brazil, was studied over a 13 month period using collectors fixed at 2.5 and 3.5 m above the creek bottom and in which upper and lower sides of ceramic and wooden panels were used as settlement substrates. The number of individuals of the most abundant organisms (barnacles, oysters and mussels) ...


  • MOL oil & gas refinery

    MOL Hungarian Oil & Gas Plc is the national Oil & Gas company for Hungary, it forms part of the large MOL Group and is by far the largest, in terms of turnover for the Hungarian sector as a whole. The project is a first for the region. API Settlers DEWACO supplied a fully functional sludge removal system comprising of: 6 nos. Chain & Flight type sludge and scum ...


    By Dewaco Ltd

  • Utility reduces DBPs while controlling algae growth - case study

    In the fall of 2004, the Operations Division of the Santa Clara Valley Water District (the District) started a program called the Operations Council on Excellence. The program was created to support the District’s vision of a cleaner, greener, and leaner operation. At the time, two of the District’s three water treatment plants, Penitencia and Santa Teresa, were undergoing ...

  • Parameters affecting steady-state floc blanket performance

    A laboratory-scale reactor was used to simulate a water treatment process sequence of rapid mix, hydraulic flocculation, upflow clarification with a floc blanket, and lamellar sedimentation to accomplish removal of colloidal particles. This study focused on variables affecting performance of the floc blanket including: provision of hydraulic flocculation, raw water turbidity, coagulant dose, ...


    By IWA Publishing

  • Innovative use of lamella clarifiers for central stormwater treatment in separate sewer systems

    Lamella settlers have been used in the past few years for the sedimentation of particles in wastewater and stormwater applications. A new and very innovative approach for the treatment of stormwater flows is proposed which extends the portfolio of solutions beyond traditional settling tanks. Surface runoff is stored in a sewer or a basin and finally treated in a small but continuously operated ...


    By IWA Publishing

  • Life Cycle Assessment of an intensive sewage treatment plant in Barcelona (Spain) with focus on energy aspects

    Life Cycle Assessment was used to evaluate environmental impacts associated to a full-scale wastewater treatment plant (WWTP) in Barcelona Metropolitan Area, with a treatment capacity of 2 million population equivalent, focussing on energy aspects and resources consumption. The wastewater line includes conventional pre-treatment, primary settler, activated sludge with nitrogen removal, and ...


    By IWA Publishing

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