polymer flocculant Articles

  • Pilot scale evaluation on ferric floc sludge concentration with pelleting flocculation blanket process

    Pelleting flocculation blanket (PFB) process has been successfully applied to high turbidity suspensions for high efficient solid/liquid separation. In this paper, by using the PFB process, a dynamic experimental study was carried out on concentrating ferric flocs sludge with a scale of 1.3–5.4 m3/h. The pilot experiment aimed to optimize the conditioning system and determine the ...


    By IWA Publishing

  • Upgrading secondary wastewater plant effluent by modified coagulation and flocculation, for water reuse in irrigation

    In this study, the feasibility of using coagulation, flocculation, and sedimentation (CF-S) for advanced treatment of secondary effluent released from the Yazd Intermittent Cycle Extended Aeration System was investigated. Four coagulants including ferric chloride (FeCl3), polyaluminum chloride (PAC), ferrous sulfate (FeSo4), and potassium ferrate (K2FeSo4) along ...


    By IWA Publishing

  • Pilot scale evaluation on ferric floc sludge concentration with pelleting flocculation blanket process

    Pelleting flocculation blanket (PFB) process has been successfully applied to high turbidity suspensions for high efficient solid/liquid separation. In this paper, by using the PFB process, a dynamic experimental study was carried out on concentrating ferric flocs sludge with a scale of 1.3–5.4 m3/h. The pilot experiment aimed to optimize the conditioning system and determine the operational ...


    By IWA Publishing

  • Flocculation - Flotation pretreatment improves operation of MBR installed to treat snack food manufacturing wastewater

    Abstract Large food manufacturing company has facilities to produce their well known brand name dairy based products in rural Indiana. As is commonly case with dairy wastewater, significant amount of proteins, sugars, oil and some suspended solids are present. Company installed membrane bioreactor (MBR) System to treat such wastewater for possible reuse. The MBR performed poorly ...

  • Assessment of a tannin-based organic polymer to harvest Chlorella vulgaris biomass from swine wastewater digestate phycoremediation

    This study investigated the efficiency of an organic tannin polymer alone or amended with polyacrylamide to harvest Chlorella vulgaris biomass grown in a laboratory-scale photobioreactor treating swine wastewater digestate. The effect of biomass concentration, tannin (TAN) dosages and changes in pH were evaluated in jar test experiments. Among the TAN concentrations tested (11, 22, 44, 89, ...


    By IWA Publishing

  • Extraction, characterization and application of malva nut gum in water treatment

    In view of green developments in water treatment, plant-based flocculants have become the focus due to their safety, degradation and renewable properties. In addition, cost and energy-saving processes are preferable. In this study, malva nut gum (MNG), a new plant-based flocculant, and its composite with Fe in water treatment using single mode mixing are demonstrated. The result presents a ...


    By IWA Publishing

  • Effectiveness of coagulants and coagulant aids for the removal of filter-clogging Synedra

    ABSTRACTThe occurrence of Synedra spp. in the source water of the CheongJu water treatment plant (South Korea) decreased filter run times of rapid sand filters to below 5 hours. During the filter-clogging episode, full-scale Synedra removal by coagulation  with polyaluminium hydrogen chloride silicate (PAHCS), flocculation and sedimentation ranged from 20 to 70%. To reduce filter clogging, ...


    By IWA Publishing

  • Die Casting

    A sample of wastewater was received from firm in the south central region of the US. The client could not get sufficient flocculation, despite using 10 lbs. of another dry flocculating material. The sample had an initial pH of 6.5. The sample contained glycol, mineral oil emulsion, wax polymers and soap for cleaning the floor. The sample was flocculated with Floccin K. The material formed a good ...


    By Integrated Engineers Inc.

  • Effectiveness of coagulants and coagulant aids for the removal of filter-clogging Synedra

    The occurrence of Synedra spp. in the source water of the CheongJu water treatment plant (South Korea) decreased filter run times of rapid sand filters to below 5 hours. During the filter-clogging episode, full-scale Synedra removal by coagulation with polyaluminium hydrogen chloride silicate (PAHCS), flocculation and sedimentation ranged from 20 to 70%. To reduce filter clogging, strategies ...


    By IWA Publishing

  • Landfill leachate treatment

    BOYDEL is pleased to confirm that we have produced great results running a heavily fuel and metals laced municipal landfill leachate through our LMR electrocoagulation reactor. The attached picture essentially speaks for itself except that the clear BOYDEL treated effluent is free of fuel smell and that the sludge depicted on the right side of the picture has not been further dewatered and is ...

  • Mono nov tailors pumping solutions for allied colloids

    Based in Bradford, Allied Colloids’ Engineering Equipment division is responsible for providing customers withthe appropriate technology to ensure that the chemicals manufactured by its production division are utilised efficiently. A number of pumps were required to fulfil two main duties on the flocculant preparation and dosing rigs; a largerpump to transfer the mixed and aged flocculant at ...

  • Comparison of centrifuge and belt press for compressible digested sludge after thermal hydrolysis

    ABSTRACT Historically it has been shown on many projects that centrifuges can outperform belt presses in dewatering digested sludge. However results from a number of projects where sludge has been treated before digestion with Cambi thermal hydrolysis process (THP) have shown good results for belt press dewatering – generally greater than 30% DS. The authors propose that the main mechanism in ...


    By Cambi Group AS

  • Influence of water treatment residuals on dewaterability of wastewater biosolids

    Co-dewatering of water treatment residuals (WTR) and wastewater biosolids can potentially benefit municipalities by reducing processing equipment and costs. This study investigated dewaterability (using capillary suction time, CST) of combined alum residuals (Al-WTR) and anaerobically digested biosolids at various blending ratios (BR), defined as the mass ratio of WTR to biosolids on a dry ...


    By IWA Publishing

  • CETCO scores a perfect 10 with RM-10 - eliminating hazardous waste disposal

    CETCO Oilfield Services’ Industrial Wastewater Treatment Division has over 30 years experience in treating industrial wastewater, helping clients meet compliance requirements and reduce costs. Additionally, CETCO Oilfield Services’ RM-10® flocculant has been successfully applied in the aerospace sector, turning a previously hazardous waste product into a delisted sludge. The aerospace facility ...


    By CETCO Energy Services

  • The effectiveness of humic acids coagulation with the use of cationic polyacrylamides

    The chemical coagulation process is a popular method for eliminating the precursors of disinfection by-products. This study presents the results of a laboratory experiment which investigates the use of cationic polyacrylamide copolymers (CPAMs) as primary coagulants in the purification of solutions containing humic acids (HA). A number of polymers with various molecular weight and charge density ...


    By IWA Publishing

  • Chemical pretreatment of combined sewer overflows for improved UV disinfection

    The aim of this research was to better understand chemical pre-treatment of combined sewer overflows (CSOs) for subsequent ultraviolet (UV) disinfection. Approximately 200 jar tests were completed. Alum (Al2(S04)3·12H2O) resulted in a higher UV light transmission (UVT), and equivalent total suspended solids (TSS) removal, than ferric chloride (FeCl3). An ...


    By IWA Publishing

  • The effectiveness of humic acid coagulation with the use of cationic polyacrylamides

    The chemical coagulation process is a popular method for eliminating the precursors of disinfection by-products. This study presents the results of a laboratory experiment which investigates the use of cationic polyacrylamide copolymers (CPAMs) as primary coagulants in the purification of solutions containing humic acids (HA). A number of polymers with various molecular weight and charge density ...


    By IWA Publishing

  • Rotating belt sieves for primary treatment, chemically enhanced primary treatment and secondary solids separation

    Fine mesh rotating belt sieves (RBS) offer a very compact solution for removal of particles from wastewater. This paper shows examples from pilot-scale testing of primary treatment, chemically enhanced primary treatment (CEPT) and secondary solids separation of biofilm solids from moving bed biofilm reactors (MBBRs). Primary treatment using a 350 microns belt showed more than 40% removal of ...


    By IWA Publishing

  • Textile Manufacturing

    A textile manufacturer in North Carolina was having a problem with removing color from their waste stream. The plant effluent had 800 color units and the local POTW was threatening to fine the manufacturer based on this discharge. The facility was using alum and a polymer to reduce the color and had continual violations for excess color. Integrated Engineers was requested to examine the water ...


    By Integrated Engineers Inc.

  • Pacific place contaminated groundwater treatment facility

    Location: Vancouver, B.C. Owner: B.C. Ministry of Environment, Lands and Parks Description: This $1.5 million facility is capable of treating 135 L/min of contaminated groundwater, removing primarily BTEX and PAH. Through aeration, pH adjustment, and polymer addition, flocculation and settling, the majority of the contaminants are removed. ...


    By NovaTec Consultants Inc.

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