- Email: [email protected]
The filtration society
FILTRATION SOCIETY
The Filtration Society Chairman Chris Withers Immediate Past Chairman Dr Neil Beaton Vice-Chairman Cyril Smith Honorary Secretary Mike Taylor 48 Springfield Road Horsham, W. Sussex RH12 2PD, UK Tel: 0403 257594, Fax: 0403 265005 Honorary Treasurer Peter Swift 7 Manor Close, Oadby, Leicester LE2 4FE. UK Tel: 0533 12500 Honorary Press Officer Maureen Duck Ordinary Members of Council Steve Barrett Prclfessor John Gregory (Honorary Librarian) Dr Clive Grimwood Dr Keith Morris Derek Purchas Bob van Ramesdonk Dr Albert Rushton Dr Jonathan Seville Jim White Derek Wyllie
Seminars on developments in water filtration processes at InterFlow 94 Held in conjunction with the InterFlow 94 exhibition at the GMex Centre in Manchester, UK, Dr Albert Rushton chaired a well attended one-day meeting on recent developments in water filtration processes. The meeting was in an innovative format, in that delegates could attend any number of the series of presentations, which meant that they only had to pay for those presentations of most interest and relevance. This was especially attractive to those with severe constraints on their time. After introductory remarks from Albert Rushton, the first presentation was by Dr Henry Wilson (University of Bradford), who talked in general terms about the wide variety of hazards to drinking water supplies, and shed further light on several specific incidents of contamination to water supplies. Moving on to a particular technology to alleviate such problems, Dr Steve Ragan (Sutcliffe Speakman Carbons Ltd) talked about developments in activated carbons for point of use water filters, and stressed the importance of using the most appropriate filter medium for a specific problem. Professor John Gregory (University College London) then moved on to talk about the treatment of Cryptosporidium in water, and in particular the monitoring methods used to detect this increasingly common - and virulent - pathogen. A major problem with the use of membrane systems in wastewater treatment is progressive blinding of the membrane, leading to early failure. Colin Monk (University of Portsmouth) offered an approach to mitigate this blocking, by use of a novel backwashing process that permits continuous filtration. A presentation by Professor Richard Wakeman (University of Exeter) on the Howden-Wakeman fibre bed filter, then discussed the application of this system to wastewater treatment (the full paper is published in this issue, on pages 183 - 187). Following his move to the World Bank, Jan Janssens was unable to present his paper on dissolved air flotation, so instead Rodney Elms (Erofta Engineering) talked about the company’s Sandtloat process, primarily used in the paper industry. The water utility viewpoint was represented by Mike Chipps (Thames Water Utilities), who discussed the practical problems involved, and in particular the benefits from using a new type of 164
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Argentine Chapter Mino Covo, President, Mino Covo S.A., Rio Bamba 1236-8”-C, (1116) Buenos Aires, Argentina. Tel: +54 1 814 4730/4731/4732, Fax: +54 1 814 4724, Telex: 17650 MCOVO-AR.
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Flemish Chapter, Belgium Dr Rik Vanbrabant, Chairman, Technical Inst. K-VIV. Ingenieurshuis, Desguinlei 214, B-2018 Antweroen. Belaium. Tel: +32 3 216 0996. Fax: +32 3’216 0689. Japanese Association Professor Emeritus M Shirato Nagoya Industrial Science Research Institute, Noa Yotsuya Building 2F, Yotsuya-dori l-13, Chikusa-ku, Nagoya 464, Japan. Fax: +81 52 781 1884. Netherlands Branch J P van der Linden, Secretary, Lavadadijk 145, NL-4706 KZ Roosendaal, The Netherlands. Fax: +31 1864 3722. Malaysian Chapter Professor Ramlan Abd. Aziz, Department of Chemical Engineering, Faculty of Chemical & Natural Resources Engineering, University of Technology, Jalan Semarak, 54100 Kuala Lumpur, Malaysia. Tel: +60 3 290 4358, Fax: + 60 3 293 7921.
rapid gravity filter plant. The final presentation was on an advanced membrane technology for wastewater treatment. Dr Peter Cardew (NWW Acumem Ltd) explained the advantages and disadvantages of membrane systems, and suggested that recent advances will lead to such systems being used in more and more applications.
Meeting on Pollution Control in the Foundry and Allied Industries Under the chairmanship of Dr Clive Smith (Greentec Consultancy Services), a one-day meeting on ‘Pollution Control in the Foundry and Allied Industries has been arranged for Tuesday 10 May at the Post House Hotel, Birmingham Airport. Papers to be presented include the following: 0 The EPA legislation and its relevance to the foundry industries’, by Simon Smith (HM Inspectorate of Pollution, Birmingham office). 0 ‘An approach to environmental management’, by Ernest Mackenzie (Castings Technology International). 0 ‘Dust arrestment requirements for a range of foundry applications’, by Bill Starrier (BMD Garant Systems, Airmaster Engineering Ltd) . 0 The control of odours from metallurgical processes’, by Brian Mills (Haden Drysys Environmental Ltd). 0 ‘Recovery of precious metals from liquid effluents’, by Tony Evans (Johnson Matthey). 0 ‘Pollution control using high efficiency ceramic filters’, by Chris Withers (Glosfume Environmental Controls). If you wish to attend this meeting, return the registration coupon in the advertisement for this meeting (on page 182 of this issue). Registration fees are f75.00 for members of the Society or the CT& s95.00 for non-members, or f20.00 for students and retired members. Note that VAT (at 17.5%) should be added to all these fees.
1994 Suttle Award meeting You are reminded that, as part of the Society’s 30th anniversary celebrations, the biennial Suttle Award is intended to attract March/April
1994
Flltratlon 8 Separatlon
FILTRATION SOCIETY papers on any topic or aspect relating to filtration and separation from younger workers aged up to 35 years, which has been raised from the previous 30 years limit. Furthermore, the value of the award has been doubled from r250 to f500. Adjudication will be based on assessment of papers in their written form, but also most importantly on their presentation by the authors at a special one-day meeting in the Department of Chemical Engineering, University of Technology, Loughborough, UK on Tuesday 6 September. The keynote address at this meeting is to be given by Professor Jacques Hermia of the Faculte des Sciences Appliquees, Unite des Procedes, Louvain-la-Neuve in Belgium. The competition is open to authors in universities, research institutions, industry or government departments?Papers must be original contributions by the authors, but it is not necessary for the subject to be restricted to an author’s own original research. Papers should be submitted in English by 1 June to the Secretary in the Horsham office.
Selection and scale-up for solid/liquid separation - 30th Anniversary Symposium This meeting will celebrate the 30th Anniverary of the founding of the Filtration Society, with a technical meeting, the Annual General Meeting and the 30th Anniversary Dinner taking place over the two days. Derek Purchas is chairing this event, being held 20 -21 September at the Forte Airport Post House, Birmingham. The programme will consist of 16 lectures, with the Annual General Meeting and 30th Annual Dinner being held on 20 September at the same venue. The symposium’s focus will be the experimental and mathematical procedures used for selecting and scaling-up separation techniques and equipment for industrial solid/liquid separation applications. The best current procedures will be highlighted, including, where possible, the most recent advances. The 16-paper programme is provisionally as follows: Tuesday
20 September:
0 Introduction - Derek B Purchas (Filtration Specialists). [7 Pretreatment chemicals - Gillian M Moody (Allied Colloids). 0 Gravity settling: Deep bed thickeners - Robert C Emmett and David Gough (Eimco). 0 Flotation clarification - P J Harvey (Purac Rosewater Ltd). 0 Hydrocyclones - Richard Mozley (Richard Mozley Ltd). 0 Sedimenting centrifuges - Alan Records (Alfa Lava1 Separa-
consistent with the new legislation in the Supply of Machinery (Safety) Regulations 1992. However, the Working Party is especially keen to produce a document that is both concise and readable, so that it will be of real value in helping existing and potential users of bag filters to identi& the key factors in ensuring high-quality installations. The Society has appreciated the unqualified support of the filtration industry, and each of the UK’s top five bag filter suppliers is represented on the Working Party. The meetings are being coordinated by Dr Clive Smith, a past Chairman of the Society, who has worked for more than 30 years in the environmental equipment industry. It is anticipated that an initial draft of the Code of Practice will be available before the end of Summer 1994. It is then planned to invite comments from a wide selection of users, regulatory authorities and other interested parties, who will be invited to participate in further meetings of the Working Party as appropriate. At its last meeting, held in Derby on 27 January, it was reported that commendable progress has been made in putting together the first draft of the Code of Practice. The first priority is to clarify issues relating to the Environmental Protection Act 1990, such as when dust monitors become mandatory, when is a stack mandatory, the provision of sampling points on compact plants, and the interpretation of Guidance Notes. Other items that will be covered at future meetings include filter media, test methods and guarantees. The Working Party welcomes the views of interested parties, who should contact Dr Clive Smith of Greentec Consultancy Services on (tel/fax) 0664 840002.
Dates announced for 1995 Filtech Europa conference and exhibition Filtech Europa 95 will take place 17- 19 October 1995 at the KKA in Karlsruhe, Germany. Karlsruhe has been selected again because of its excellent facilities, and its popularity with both delegates and exhibitors.
Subscription
reminder
Members who have not yet paid their 1994 subscriptions are requested to remit them as soon as possible to the Horsham office. Unpaid subscriptions will be deleted from the Filtration & Separation mailing list after this issue. The rates for 1994 are f50 sterling, DM 125 or US$ 75.
tion)
0 Vibrating screens - Jeff Balderson (Russell Finex). q Deep bed filters - David Stevenson (PWT Projects). Wednesday
21 September:
0 Continuous filters - Neil Beaton (Dorr Oliver). 0 Pressure vessel filters - P Mtiller (DrM Dr Mfiller AG) 0 Cartridge filters - Eric Blakie (Domnick Hunter). 0 Crossflow filters - Peter Cardew (NWWAcumem Ltd). 0 Two papers still to be finalised. 0 Filtering centrifuges - Bnmo Hegnauer (Krauss MaIfei). IJ Expert system approaches - Professor Richard Wakeman (University of Exeter) For further information, contact the Secretary’s Horsham office. There will also be a partners’ programme.
Working Party on ‘Code of Practice for Dust Collectors’ The Filtration Society has formed a special Working Party to establish a voluntary Code of Practice for industrial dust collectors based on fabric filtration. The aim of the group is to establish a written standard covering the design, construction, performance, testing and servicing of bag filters. Particular emphasis will be paid to safety and reliability, and it is anticipated that the objectives will be highly relevant and Filtration 01Separation
March/April
1994
New company for former Chairman Ron Bosley, a former Chairman of the Society, has linked up with Peter White and several others to set up Filtration Services Ltd, based in Macclesfield, Cheshire, UK The company will supply consumables such as filter cloths, discharge and compression belts, filter elements and sleeves etc., as well as offering an extensive range of services in maintenance and trouble-shooting. For further information, contact Ron Bosley on (tel) 0625 616109 or (fax) 0625 502323.
Obituary: Stephen Evans It has been announced that Stephen Evans, Delkor’s sales director, died in the Royal United Hospital, Bath on 31 December 1993, after a short but courageously fought illness. Aged 39, he was a Member of the Institution of Chemical Engineers, and was respected as an ‘industry authority’ on solid/liquid filtration technology. He graduated from the University of Bath with a first-class honours degree in chemical engineering in 1976, later joining Delkor as a sales engineer. In his 13 years with the company he played a key role in developing it into an international leader in vacuum filtration systems. In 1988 he was appointed to the board, and was responsible for worldwide marketing of industrial filtration equipment. He had considerable success in China, the Far East and the Pacific Rim; many of his negotiated contracts will run into the mid-1990s. q 165
The Filtration Society Chairman Chris Withers Immediate Past Chairman Dr Neil Beaton Vice-Chairman Cyril Smith Honorary Secretary Mike Taylor 48 Springfield Road Horsham, W. Sussex RH12 2PD, UK Tel: 0403 257594, Fax: 0403 265005 Honorary Treasurer Peter Swift 7 Manor Close, Oadby, Leicester LE2 4FE. UK Tel: 0533 12500 Honorary Press Officer Maureen Duck Ordinary Members of Council Steve Barrett Prclfessor John Gregory (Honorary Librarian) Dr Clive Grimwood Dr Keith Morris Derek Purchas Bob van Ramesdonk Dr Albert Rushton Dr Jonathan Seville Jim White Derek Wyllie
Seminars on developments in water filtration processes at InterFlow 94 Held in conjunction with the InterFlow 94 exhibition at the GMex Centre in Manchester, UK, Dr Albert Rushton chaired a well attended one-day meeting on recent developments in water filtration processes. The meeting was in an innovative format, in that delegates could attend any number of the series of presentations, which meant that they only had to pay for those presentations of most interest and relevance. This was especially attractive to those with severe constraints on their time. After introductory remarks from Albert Rushton, the first presentation was by Dr Henry Wilson (University of Bradford), who talked in general terms about the wide variety of hazards to drinking water supplies, and shed further light on several specific incidents of contamination to water supplies. Moving on to a particular technology to alleviate such problems, Dr Steve Ragan (Sutcliffe Speakman Carbons Ltd) talked about developments in activated carbons for point of use water filters, and stressed the importance of using the most appropriate filter medium for a specific problem. Professor John Gregory (University College London) then moved on to talk about the treatment of Cryptosporidium in water, and in particular the monitoring methods used to detect this increasingly common - and virulent - pathogen. A major problem with the use of membrane systems in wastewater treatment is progressive blinding of the membrane, leading to early failure. Colin Monk (University of Portsmouth) offered an approach to mitigate this blocking, by use of a novel backwashing process that permits continuous filtration. A presentation by Professor Richard Wakeman (University of Exeter) on the Howden-Wakeman fibre bed filter, then discussed the application of this system to wastewater treatment (the full paper is published in this issue, on pages 183 - 187). Following his move to the World Bank, Jan Janssens was unable to present his paper on dissolved air flotation, so instead Rodney Elms (Erofta Engineering) talked about the company’s Sandtloat process, primarily used in the paper industry. The water utility viewpoint was represented by Mike Chipps (Thames Water Utilities), who discussed the practical problems involved, and in particular the benefits from using a new type of 164
I
Argentine Chapter Mino Covo, President, Mino Covo S.A., Rio Bamba 1236-8”-C, (1116) Buenos Aires, Argentina. Tel: +54 1 814 4730/4731/4732, Fax: +54 1 814 4724, Telex: 17650 MCOVO-AR.
.
I I’
I
Flemish Chapter, Belgium Dr Rik Vanbrabant, Chairman, Technical Inst. K-VIV. Ingenieurshuis, Desguinlei 214, B-2018 Antweroen. Belaium. Tel: +32 3 216 0996. Fax: +32 3’216 0689. Japanese Association Professor Emeritus M Shirato Nagoya Industrial Science Research Institute, Noa Yotsuya Building 2F, Yotsuya-dori l-13, Chikusa-ku, Nagoya 464, Japan. Fax: +81 52 781 1884. Netherlands Branch J P van der Linden, Secretary, Lavadadijk 145, NL-4706 KZ Roosendaal, The Netherlands. Fax: +31 1864 3722. Malaysian Chapter Professor Ramlan Abd. Aziz, Department of Chemical Engineering, Faculty of Chemical & Natural Resources Engineering, University of Technology, Jalan Semarak, 54100 Kuala Lumpur, Malaysia. Tel: +60 3 290 4358, Fax: + 60 3 293 7921.
rapid gravity filter plant. The final presentation was on an advanced membrane technology for wastewater treatment. Dr Peter Cardew (NWW Acumem Ltd) explained the advantages and disadvantages of membrane systems, and suggested that recent advances will lead to such systems being used in more and more applications.
Meeting on Pollution Control in the Foundry and Allied Industries Under the chairmanship of Dr Clive Smith (Greentec Consultancy Services), a one-day meeting on ‘Pollution Control in the Foundry and Allied Industries has been arranged for Tuesday 10 May at the Post House Hotel, Birmingham Airport. Papers to be presented include the following: 0 The EPA legislation and its relevance to the foundry industries’, by Simon Smith (HM Inspectorate of Pollution, Birmingham office). 0 ‘An approach to environmental management’, by Ernest Mackenzie (Castings Technology International). 0 ‘Dust arrestment requirements for a range of foundry applications’, by Bill Starrier (BMD Garant Systems, Airmaster Engineering Ltd) . 0 The control of odours from metallurgical processes’, by Brian Mills (Haden Drysys Environmental Ltd). 0 ‘Recovery of precious metals from liquid effluents’, by Tony Evans (Johnson Matthey). 0 ‘Pollution control using high efficiency ceramic filters’, by Chris Withers (Glosfume Environmental Controls). If you wish to attend this meeting, return the registration coupon in the advertisement for this meeting (on page 182 of this issue). Registration fees are f75.00 for members of the Society or the CT& s95.00 for non-members, or f20.00 for students and retired members. Note that VAT (at 17.5%) should be added to all these fees.
1994 Suttle Award meeting You are reminded that, as part of the Society’s 30th anniversary celebrations, the biennial Suttle Award is intended to attract March/April
1994
Flltratlon 8 Separatlon
FILTRATION SOCIETY papers on any topic or aspect relating to filtration and separation from younger workers aged up to 35 years, which has been raised from the previous 30 years limit. Furthermore, the value of the award has been doubled from r250 to f500. Adjudication will be based on assessment of papers in their written form, but also most importantly on their presentation by the authors at a special one-day meeting in the Department of Chemical Engineering, University of Technology, Loughborough, UK on Tuesday 6 September. The keynote address at this meeting is to be given by Professor Jacques Hermia of the Faculte des Sciences Appliquees, Unite des Procedes, Louvain-la-Neuve in Belgium. The competition is open to authors in universities, research institutions, industry or government departments?Papers must be original contributions by the authors, but it is not necessary for the subject to be restricted to an author’s own original research. Papers should be submitted in English by 1 June to the Secretary in the Horsham office.
Selection and scale-up for solid/liquid separation - 30th Anniversary Symposium This meeting will celebrate the 30th Anniverary of the founding of the Filtration Society, with a technical meeting, the Annual General Meeting and the 30th Anniversary Dinner taking place over the two days. Derek Purchas is chairing this event, being held 20 -21 September at the Forte Airport Post House, Birmingham. The programme will consist of 16 lectures, with the Annual General Meeting and 30th Annual Dinner being held on 20 September at the same venue. The symposium’s focus will be the experimental and mathematical procedures used for selecting and scaling-up separation techniques and equipment for industrial solid/liquid separation applications. The best current procedures will be highlighted, including, where possible, the most recent advances. The 16-paper programme is provisionally as follows: Tuesday
20 September:
0 Introduction - Derek B Purchas (Filtration Specialists). [7 Pretreatment chemicals - Gillian M Moody (Allied Colloids). 0 Gravity settling: Deep bed thickeners - Robert C Emmett and David Gough (Eimco). 0 Flotation clarification - P J Harvey (Purac Rosewater Ltd). 0 Hydrocyclones - Richard Mozley (Richard Mozley Ltd). 0 Sedimenting centrifuges - Alan Records (Alfa Lava1 Separa-
consistent with the new legislation in the Supply of Machinery (Safety) Regulations 1992. However, the Working Party is especially keen to produce a document that is both concise and readable, so that it will be of real value in helping existing and potential users of bag filters to identi& the key factors in ensuring high-quality installations. The Society has appreciated the unqualified support of the filtration industry, and each of the UK’s top five bag filter suppliers is represented on the Working Party. The meetings are being coordinated by Dr Clive Smith, a past Chairman of the Society, who has worked for more than 30 years in the environmental equipment industry. It is anticipated that an initial draft of the Code of Practice will be available before the end of Summer 1994. It is then planned to invite comments from a wide selection of users, regulatory authorities and other interested parties, who will be invited to participate in further meetings of the Working Party as appropriate. At its last meeting, held in Derby on 27 January, it was reported that commendable progress has been made in putting together the first draft of the Code of Practice. The first priority is to clarify issues relating to the Environmental Protection Act 1990, such as when dust monitors become mandatory, when is a stack mandatory, the provision of sampling points on compact plants, and the interpretation of Guidance Notes. Other items that will be covered at future meetings include filter media, test methods and guarantees. The Working Party welcomes the views of interested parties, who should contact Dr Clive Smith of Greentec Consultancy Services on (tel/fax) 0664 840002.
Dates announced for 1995 Filtech Europa conference and exhibition Filtech Europa 95 will take place 17- 19 October 1995 at the KKA in Karlsruhe, Germany. Karlsruhe has been selected again because of its excellent facilities, and its popularity with both delegates and exhibitors.
Subscription
reminder
Members who have not yet paid their 1994 subscriptions are requested to remit them as soon as possible to the Horsham office. Unpaid subscriptions will be deleted from the Filtration & Separation mailing list after this issue. The rates for 1994 are f50 sterling, DM 125 or US$ 75.
tion)
0 Vibrating screens - Jeff Balderson (Russell Finex). q Deep bed filters - David Stevenson (PWT Projects). Wednesday
21 September:
0 Continuous filters - Neil Beaton (Dorr Oliver). 0 Pressure vessel filters - P Mtiller (DrM Dr Mfiller AG) 0 Cartridge filters - Eric Blakie (Domnick Hunter). 0 Crossflow filters - Peter Cardew (NWWAcumem Ltd). 0 Two papers still to be finalised. 0 Filtering centrifuges - Bnmo Hegnauer (Krauss MaIfei). IJ Expert system approaches - Professor Richard Wakeman (University of Exeter) For further information, contact the Secretary’s Horsham office. There will also be a partners’ programme.
Working Party on ‘Code of Practice for Dust Collectors’ The Filtration Society has formed a special Working Party to establish a voluntary Code of Practice for industrial dust collectors based on fabric filtration. The aim of the group is to establish a written standard covering the design, construction, performance, testing and servicing of bag filters. Particular emphasis will be paid to safety and reliability, and it is anticipated that the objectives will be highly relevant and Filtration 01Separation
March/April
1994
New company for former Chairman Ron Bosley, a former Chairman of the Society, has linked up with Peter White and several others to set up Filtration Services Ltd, based in Macclesfield, Cheshire, UK The company will supply consumables such as filter cloths, discharge and compression belts, filter elements and sleeves etc., as well as offering an extensive range of services in maintenance and trouble-shooting. For further information, contact Ron Bosley on (tel) 0625 616109 or (fax) 0625 502323.
Obituary: Stephen Evans It has been announced that Stephen Evans, Delkor’s sales director, died in the Royal United Hospital, Bath on 31 December 1993, after a short but courageously fought illness. Aged 39, he was a Member of the Institution of Chemical Engineers, and was respected as an ‘industry authority’ on solid/liquid filtration technology. He graduated from the University of Bath with a first-class honours degree in chemical engineering in 1976, later joining Delkor as a sales engineer. In his 13 years with the company he played a key role in developing it into an international leader in vacuum filtration systems. In 1988 he was appointed to the board, and was responsible for worldwide marketing of industrial filtration equipment. He had considerable success in China, the Far East and the Pacific Rim; many of his negotiated contracts will run into the mid-1990s. q 165