Supratec von-drais-straße 7 D Simmern/Hunsrück Fon: *49 ( ) Fax: *49 ( )

Transcription

1 BELÜFTUNGSTECHNIK UMWELT- & VERFAHRENSTECHNIK SERVICE & WARTUNG G E N E R A L I N F O R M A T I O N OXYFLEX - MF 650 MEMBRAN-PLATE-DIFFUSER for fine bubble aeration of liquids Supratec GESELLSCHAFT FÜR UMWELT- UND VERFAHRENSTECHNIK MBH von-drais-straße 7 D Simmern/Hunsrück Fon: *49 ( ) Fax: *49 ( ) info@supratec.cc internet:

2 G E N E R A L Supratec I N F O R M A T I O N GENERAL INFORMATION Supratec Gesellschaft für Umwelt- und produces modern high efficient aeration systems, which are mainly used for oxygen transfer into biological waste water treatment. These products can also be used for any kind of transfer of gases into liquids. OXYFLEX is the brand of membrane diffusers (plate, tubes and discs) with a plastic body. The extra ordinary charachteristics of OXYLFEX -MF membrane plate diffusers are given by its shape and the materials used. DESIGN MEMBRANE OXYFLEX -MF membrane plate diffusers are available in two sizes: OXYFLEX -MF 650 (width length) 650 mm 150 mm and OXYFLEX -MF 1100 (width length) 1100 mm 200 mm. The body is a oval plate, made of glass reinforced made of Polypropylene. The membrane is fixed to this body with a plastic frame also made of glass reinforced Polypropylene. Standard membranes are made of SUPRAFORM (EPDM). Membranes made of SUPRASIL (Silicone) and SUPRADUR (Polyurethane) are also available. The membranes have a unique slot-arrangment. The size and arrangement of those slots is optimized to archieve maximum oxygen transfer efficiency. CHARACTERISTICS OXYFLEX -MF membrane plate diffusers have low pressure loss. OXYFLEX -MF membrane plate diffusers are highly resitant against soiling. OXYFLEX -MF membrane plate diffusers produce fine bubbles of a medium diameter < 2 mm. Unlike tube diffusers, the whole active diffuser surface is at the same hydraulic level, therefore the membranes operate evenly across the full range from minimal to maximal air flow. The feature results in optimum lifetime and efficiency. OXYFLEX -MF membrane plate diffusers can be operated intermittently. OXYFLEX -MF membrane plate diffusers can be installed with plastic- and/or stainless steel pipes and are used for all geometric forms of tanks, but they are extraordinarily good for medium and huge sized tanks. PERFORMANCE OXYFLEX -MF membrane plate diffusers are well established and are working to the clients satisfaction world-wide. OXYFLEX -MF membrane plate diffusers have a very wide range, OXYFLEX -MF 650: 0-1Nm /h. The design air flow should be approximately, OXYFLEX -MF 650: 7 ± 2 Nm /h OXYFLEX -MF membrane plate diffusers can reach specific oxygen transfer efficiency up to 25 go /Nm xm, if coverage and water depth is favourable. 2 sup COMBINATION VARIATIONS For plants with partly intermittent operated tanks, OXYFLEX -MF membrane plate diffusers can be combined with BRANDOL ceramic tube diffusers. However, different pressure losses have to be considered. Modifed OXYFLEX -MF membrane plate diffusers are also available for drinking water purposes. OXYFLEX -MF membrane plate diffusers are also available as coarse bubble diffusers. Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

3 D R A W I N G O X Y F L E X - M F A S Membrane Plate Diffuser OXYFLEX -MF 650 Type AS will be mounted onto distributor with a welded clamp (different diameter available). Materials: Body: Polypropylen (PP-GF) : Polypropylen (PP-GF) Clamp: Polypropylen (PP) Gasket: EPDM Membrane: SUPRASIL (Silikon) SUPRAFORM (EPDM) Membrane area: 0,1 m² Membrane Body Distributor Pipe Gasket Thread Connection Hole Ø 14mm Clamp 2 Pieces Hole Ø 14mm Distribution Pipe Distributor in different diameter e.g. Dn100, DN80 2 Pieces Clamp Membrane Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

4 D R A W I N G O X Y F L E X - M F B Membrane Plate Diffuser OXYFLEX -MF 650 Type B will be installed to a rectangular pipe by 4 welded thread bolts, those are welded to the pipe. Materials: Body: Polypropylen (PP-GF) : Polypropylen (PP-GF) Gasket: EPDM Membrane: SUPRASIL (Silikon) SUPRAFORM (EPDM) Membrane area: 0,1 m² Membrane Body plate Distributor Pipe Gasket Air-Socket Hole Ø 2mm 2 Pieces Threat bolts M6 Hole in Pipe Ø 2mm Distributor Pipe 2 Pieces Membrane Stand Juni 2009 Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

5 C U R V E S P R E S S U R E - O X Y G E N OXYFLEX -MF650 membrane plate diffuser are high efficient diffusers and are mainly used for oxygen supply to biological waste water treatment plants. Beside procedural necessities, important criterions are used to select the matching fine-bubble aeration-technology to the features of a treatment plant. Systems using OXYFLEX -MF650 membrane plate diffusers are typically designed at a specific air-flow of 7 Nm /h per unit. This gives a good compromise between capital in investment and efficiency. The following table shows figures taken from an actual oxygen efficiency test. The values have been reached in a circular basin with water depth of 4,5m, submergence of diffusers of 4,15m and coverage of 11,27%. These are typical values particular to the test basin. The figures can deviation ± 25% in tanks of different sizes and diffuser density and loading. SUPRATEC GmbH would be pleased to produce a data-sheet for any individual application on request. No guarantee-claims can be derived from the diagram! 0 specific O 2-entrainment standard conditions and pressure loss OXYFLEX -Mf p OC OCL,h [go2/(nm³ x met)] p [mbar] specific load [Nm³/m] 10 Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

6 I N S T A L L A T I O N Supratec M A N U A L DESCRIPTION OXYFLEX -MF650 - membrane plate diffuser Type AS has a solid, strong, horizontal body, made of glass-reinforced Polypropylene and a slipped over membrane (e.g. EPDM). The two-piece-frame, made of glass-reinforced Polypropylene ensures the proper location of the membrane. The body has a connecting-thread (standard 1 BSPmale) that is welded into a Polypropylene clamp. This clamp can be fastened by screws or wedges. The integral gasket of the clamp seals the system. MEASUREMENTS Width: 189 mm, Length: 680 mm, Height: 21 mm - with rounded edges (not including clamp) 2 Free membrane area: Length: 650 mm, Width: 150 mm (0,1 m ) STORAGE PREPARATION The diffusers should be stored in their packing inside a dry and aerated building. DIN 7716 has to be considered. Before installation of the OXYFLEX -MF membrane plate diffuser Type AS it has to be checked that the piping system is clean. Drilling chips, dirt etc. have to be removed, as those will be transported into the diffusers as soon as blowers are set into operation causing serious damage to the diffuser membranes. LEVELLING INSTALLATION OXYFLEX -MF membrane plate diffuser Type AS normally installed onto round pipes. The piping system has to be levelled to maximum ± 10 mm. OXYFLEX -MF membrane plate diffuser Type AS can be fixed to round pipes made of stainless steel or plastic, with a minimum diameter of 50 mm. On the upper side of those pipes, centred holes of diameter Ø 14 mm must be made. The clamp will be installed in such a way, that the hole of Ø 14 mm and the opening of the clamp are aligned. Care must be taken of the horizontal seat of the diffusers. The O-Ring seal, made of EPDM must be clean and undamaged and should sit between diffuser and pipe. Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

7 O P E R A T I O N M A N U A L FUNCTION AND LEAKAGE CHECK FIRST RUN OF DIFFUSERS VISUAL BUBBLE CHECK OXYGEN- TRANSFER- EFFICIENCY TEST START UP After installation of OXYFLEX -MF 650 membrane plate diffusers a function and leakage test should be carried out. The tank should be filled with clean water up to maximum 10 cm above diffusers surface and the diffusers set in operation (specific air flow: 6 Nm /h per unit). Then function and installation can be checked and confirmed by report. After function and installation has been checked and confirmed OXYFLEX -MF 650 membrane plate diffusers have to be operated at least another 60 hours continuously, at a specific air flow of minimum 10 Nm /h per unit. Water level shall be as quickly as possible raised up to minimum 100 cm above diffusers surface. IMPORTANT: Diffusers should not stand still Specific air flow should not exceed 1 Nm /h per unit. The visual judgement of the bubble distribution should not be taken before the above specific first run of diffusers. To do the visual check, the diffusers shall operate at maximum capacity and shall be turned to the minimum. Test of even aeration (visual bubble check) must take place when the water level is at least cm above diffusers surface and a specific air flow of at least 6 Nm /h per unit. Test of even aeration (visual bubble check) at minimum air flow can only take place if the water temperature is above 10 C. Before the stated oxygen transfer efficiency figures of the OXYFELX - MF 650 membrane plate diffusers are proved with an oxygen transfer efficiency test, the above mentioned steps have to be considered. The oxygen transfer efficiency test must be done accordingly to accepted rules (e.g. ATV-M 209) in clean or waste water. Guarantee figures have to be controlled exactly. It is necessary to have a precise air-flow measurement system. After successful oxygen transfer efficiency test, start up of the OXYFLEX -MF 650 membrane plate diffusers may follow immediately. If there is a postponement of the start up, care should be taken that the water level stays at least 100 cm above diffusers surface to protect OXYFLEX -MF 650 membrane plate diffusers from sunlight and / or freezing. Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc

8 M A I N T E N A N C E M A N U A L MAINTENANCE OXYFLEX -MF 650 membrane plate diffusers do not need a lot of maintenance. Usually it is enough to have one run of 10 to 15 minutes operation at minimum air-flow per day, where each single OXYFLEX -MF 650 membrane plate diffuser shall operate at a specific air-flow of at least 10 Nm /h per unit. To do so, it may help to shut down the system partially, by closing the corresponding valves. This removes layers of sludge which may have occurred after long times of in operation of the system or long times of low specific air flow. At least once per year OXYFLEX - MF 650 membrane plate diffusers should be checked visually, particulary they should be checked for layers of sludge or similar. If so, those layers should be removed carefully. A seperate maintenance-contract is available. SUPERVISION A Visual bubble check should be carried out daily. The pressure loss of the system should be monitored and reported monthly. Apparent changes of the bubble distribution and/or of the pressure loss should be promptly reported to SUPRATEC GmbH, especially at installations with intermittent operation where there is a risk that activated sludge could penetrate the entire piping through a damaged OXYFLEX -MF 650 membrane plate diffuser which would affect function and lifetime of all OXYFLEX -MF 650 membrane plate diffusers in the system. The maximum of SUPRATEC GmbH s warranty for OXYFLEX -MF 650 membrane is 24 months. Longer warranty can be arranged only with conclusion of a maintenance contract between the operator and SUPRATEC GmbH. Damage and/or other influences are specifically excluded from the warranty promise. WARRANTY The warranty ends if it is known, that sewage is partially or mainly of industrial origin and/or the sewage has a damaging influence on membrane diffusers and SUPRATEC GmbH was not informed accordingly. In such a case, a confirmation of the warranty is to be ordered through SUPRATEC GmbH. The general sales and warranty conditions of SUPRATEC GmbH apply. Supratec von-drais-straße 7 D Simmern Fon: +49 ( ) Fax: +49 ( ) info@supratec.cc