The Experts below are selected from a list of 78 Experts worldwide ranked by ideXlab platform

Chuanfang Yang - One of the best experts on this subject based on the ideXlab platform.

  • designing high caliber nonwoven Filter Mats for coalescence filtration of oil water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

  • Designing high-caliber nonwoven Filter Mats for coalescence filtration of oil/water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

B. Rusten - One of the best experts on this subject based on the ideXlab platform.

  • Rotating belt sieves for primary treatment, chemically enhanced primary treatment and secondary solids separation.
    Water science and technology : a journal of the International Association on Water Pollution Research, 2020
    Co-Authors: B. Rusten, S S Rathnaweera, E Rismyhr, A K Sahu, J Ntiako
    Abstract:

    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 total suspended solids (TSS) and 30% removal of chemical oxygen demand (COD) at sieve rates as high as 160 m³/m²-h. Maximum sieve rate tested was 288 m³/m²-h and maximum particle load was 80 kg TSS/m²-h. When the Filter Mat on the belt increased from 10 to 55 g TSS/m², the removal efficiency for TSS increased from about 35 to 60%. CEPT is a simple and effective way of increasing the removal efficiency of RBS. Adding about 1 mg/L of cationic polymer and about 2 min of flocculation time, the removal of TSS typically increased from 40-50% without polymer to 60-70% with polymer. Using coagulation and flocculation ahead of the RBS, separation of biofilm solids was successful. Removal efficiencies of 90% TSS, 83% total P and 84% total COD were achieved with a 90 microns belt at a sieve rate of 41 m³/m²-h.

  • Pilot-scale study to investigate the impact of rotating belt Filter upstream of a MBR for nitrogen removal
    Water Science and Technology, 2019
    Co-Authors: V. A. Razafimanantsoa, B. Rusten, Ashish K. Sahu, Torleiv Bilstad, D. Adyasari, L. Ydstebø
    Abstract:

    : The goal of this study was to investigate what kind of impact the removal of particulate organic Matter with 33μm rotating belt Filter (RBF) (as a primary treatment) will have on the membrane bioreactor (MBR) performance. Two small MBR pilot plants were operated in parallel, where one train treated 2mm screened municipal wastewater (Train A) and the other train treated wastewater that had passed through a RBF with a 33μm Filter cloth (Train B). The RBF was operated without a Filter Mat on the belt. About one third of the organic Matter was removed by the fine mesh Filter. The assessment of the overall performance showed that the two pilot plants achieved approxiMately the same removal efficiencies with regard to total suspended solids (TSS), chemical oxygen demand (COD), total phosphorus and total nitrogen. It was also observed that the system with 33μm RBF as a primary treatment produced more sludge, which could be used for biogas production, and required about 30% less aeration downstream. Transmembrane pressure was significantly lower for the train receiving 33μm primary treated wastewater compared to the control receiving 2mm screened wastewater.

  • Rotating belt sieves for primary treatment, chemically enhanced primary treatment and secondary solids separation.
    Water Science and Technology, 2017
    Co-Authors: B. Rusten, S S Rathnaweera, E Rismyhr, A K Sahu, J Ntiako
    Abstract:

    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 MBBRs. Primary treatment using a 350 microns belt showed more than 40% removal of TSS and 30% removal of COD at sieve rates as high as 160 m³/m²-h. Maximum sieve rate tested was 288 m³/m²-h and maximum particle load was 80 kg TSS/m²-h. When the Filter Mat on the belt increased from 10 to 55 g TSS/m² the removal efficiency for TSS increased from about 35 to 60%. CEPT is a simple and effective way of increasing the removal efficiency of RBS. Adding about 1 mg/L of cationic polymer and about 2 min of flocculation time the removal of TSS typically increased from 40–50% without polymer to 60–70% with polymer. Using coagulation and flocculation ahead of the RBS, separation of biofilm solids was successful. Removal efficiencies of 90% TSS, 83% total P and 84% total COD were achieved with a 90 microns belt at a sieve rate of 41 m³/m²-h.

  • Impact of fine mesh sieve primary treatment on nitrogen removal in moving bed biofilm reactors
    Water Science and Technology, 2015
    Co-Authors: B. Rusten, V. A. Razafimanantsoa, M. A. Andriamiarinjaka, C. L. Otis, Ashish K. Sahu, Torleiv Bilstad
    Abstract:

    The purpose of this project was to investigate the effect of selective particle removal during primary treatment on nitrogen removal in moving bed biofilm reactors (MBBRs). Two small MBBR pilot plants were operated in parallel, where one train treated 2 mm screened municipal wastewater and the other train treated wastewater that had passed through a Salsnes Filter SF1000 rotating belt sieve (RBS) with a 33 µs sieve cloth. The SF1000 was operated without a Filter Mat on the belt. The tests confirmed that, for the wastewater characteristics at the test plant, Salsnes Filter primary treatment with a 33 µs RBS and no Filter Mat produced a primary effluent that was close to optimum. Removal of organic Matter with the 33 µs sieve had no negative effect on the denitrification process. Nitrification rates improved by 10–15% in the train with 33 µs RBS primary treatment. Mass balance calculations showed that without RBS primary treatment, the oxygen demand in the biological system was 36% higher. Other studies have shown that the sludge produced by RBS primary treatment is beneficial for biogas production and will also significantly improve sludge dewatering of the combined primary and biological sludge.

  • Evaluation and testing of fine mesh sieve technologies for primary treatment of municipal wastewater.
    Water Science and Technology, 2006
    Co-Authors: B. Rusten, Hallvard Ødegaard
    Abstract:

    Fine mesh sieve technologies were tested in full scale at several municipal wastewater treatment plants. A screening test was used to characterize wastewater and establish the design criteria for the sieves. To achieve high removal efficiencies it was crucial to operate the sieves with a Filter Mat. Rotating belt sieves performed best in the full-scale tests. A small dose of cationic polymer and a static flocculator ahead of a rotating belt sieve achieved excellent results on a wastewater that was originally found unsuitable for primary treatment with fine mesh sieves. Simple screw presses dewatered the sludge from the sieves to typically 25–30% total solids. Using fine mesh sieves with

Dan Hu - One of the best experts on this subject based on the ideXlab platform.

  • designing high caliber nonwoven Filter Mats for coalescence filtration of oil water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

  • Designing high-caliber nonwoven Filter Mats for coalescence filtration of oil/water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

Xiaoyu Li - One of the best experts on this subject based on the ideXlab platform.

  • designing high caliber nonwoven Filter Mats for coalescence filtration of oil water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

  • Designing high-caliber nonwoven Filter Mats for coalescence filtration of oil/water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

Lei Li - One of the best experts on this subject based on the ideXlab platform.

  • designing high caliber nonwoven Filter Mats for coalescence filtration of oil water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.

  • Designing high-caliber nonwoven Filter Mats for coalescence filtration of oil/water emulsions
    Separation and Purification Technology, 2015
    Co-Authors: Dan Hu, Xiaoyu Li, Lei Li, Chuanfang Yang
    Abstract:

    Oily wastewater is a major problem in industries that can cause severe environmental pollution without proper treatment. In this paper, an easily fabricated, robust and durable nonwoven fibrous Filter Mat was prepared for coalescence filtration of four kinds of oil-in-water emulsions, namely hexadecane/water, octane/water, soybean oil/water and engine oil/water. An aroMatic thermoplastic polyurethane resin (TPU) was selected to bind the fibers together for structure integrity of the Mat. Special roughening treatment to the Mat was conducted to deliver the required wettability for effective coalescence separation of these emulsions. The Filter Mat thus prepared reached a tensile strength of 2.99 MPa, 20 times stronger than that of the pristine Mat. The Mat surface was made both hydrophilic and superoleophilic, allowing it to have separation efficiency as high as 99.61% in a single pass flow. Moreover, even pre-saturated with oil, the Mat remained effective in separation and permitted high flow, proving its high caliber for potential industrial applications. (C) 2015 Elsevier B.V. All rights reserved.