Micro Drum Filters. filters filtratietechniek separatietechniek

Transcription

1 Micr Drum Filters filters filtratietechniek separatietechniek

2 Micr Drum Filters Micr Drum Filters ffer an efficient and reliable methd fr the separatin f fine slids and rganic material ut f varius types f liquids. Auxill Nederland has develped this prcess ne step further and nw ffers a range f rugged, efficient and ecnmical drum filters, used in water filtratin, prcess water circulatin prcesses and liquid circulatin. Pht 1: Terneuzen (NL), prject De Drie Ambachten (surce: Waterfrum Media) Micr Drum Filters briefly: Filtratin f surface water Effluent plishing in waste water Remval f rganic and fibrus slids Filtratin f (surce and well) water fr irrigatin Easy maintenance and lw peratin csts Capacity frm 10 m³ up t 4500 m³/h Screens frm 20 µ up t 3000 µ made frm Stainless Steel Grstraat HG Detinchem telefn: inf@auxill.nl 1

3 Applicatins Micr Drum Filters riginate frm the fish farming industry, which requires is a cnstant take in f clean water. Envirnmental regulatins made n the effluent f such farms bligate the use f these filters t clean waste water, which lads f rganic matter, such as fd rests, fish drppings, scales etc. Nwadays the applicatin f the Micr Drum Filter has expanded t ther area s. In the verview written belw yu will find the areas in which the drum filter is used. Fish farming Filtratin intake water Remval f slids in effluent Cling prcess Filtratin intake water Remval f mussel seeds, algae etc. Waste water treatment Effluent plishing, remval f suspended slids Pre filter fr Membrane Bi Reactrs (M.B.R.) Laundries Remval f Fibers Textile cmpanies Remval f fibers Pre filter t UF fr indig recvery Wd prcessing Remval f fibers Irrigatin Filtratin f intake water, drip irrigatin prtectin Algae remval Industry general All prcesses, where light slids may cause prblems Pre filter fr water making installatins Pre filter fr Membrane Bi Reactrs (M.B.R.) Fd prcessing Remval f starches and fibrus materials Remval f cagulated slids ut f cking prcesses Recreatin parks & z Cleaning f swimming pls and recreatinal pnds and waterwrks (mbile units) Grstraat HG Detinchem telefn: inf@auxill.nl 2

4 Brief prcess descriptin The liquid, mixed with slid particles, flws int the drum thrugh the inlet flange ( ). The Micr Drum Filter cntains a rtating drum, equipped with variable netting that filters the slid particles frm the liquid. Thrugh the utlet flange ( ) the clean liquid flws further int the prcess. With the use f a cleaning element dirt is remved frm inside the drum. Slid particles are cllected and dispsed thrugh a sludge cnveyr screw ( ). The sludge cnveyr screw is cnnected directly t the drum transmissin. Dewatering insert is ptinal (see pht 4). Pht 4 General data Screen size 20 µ µ Capacity Up t 4500 m³/h Material Pwer cnsumptin Very lw Maintenance Limited Operatin Unattended Grstraat HG Detinchem telefn: inf@auxill.nl 3

5 Technical specificatins Material Tank 316 L Frame 316 L Drum 316 L Filter material Mesh wven Drive axle Bearing SKF Piping Spray nzzles Brnze f Ball valve (flush) Cllectin tray Sludge utlet Cnnectins Inlet Flanged (DIN) Outlet Flanged (DIN) Sludge utlet Pipe end Tank - Pump Optinal Pmp Spraying system Fitted Mtr Flender r similar Standard direct drive mtr Optinal Direct drive mtr with adjustable gearbx, variable speed Pump Calpeda Capacity 2.2 l/min. Each spray nzzle. P = 5-6 bar Optinal, screen < 100 µ Capacity 2.2 l/min. Each spray nzzle. P = bar Level regulatin Water pressure nzzles IFM, alternative Vegabar en Vegamet 624 Pressure transmitter Suc, 1 30 bar Pht 5 Flender mtr reductr Grstraat HG Detinchem telefn: inf@auxill.nl 4

6 Cntrl system The cntrl f the Auxill Micr Drum Filter is lcated in a stainless steel Rittal Bx (see pht 6). The prcessr in the cntrl cabinet is cntrlled by a signal frm a pressure sensr, standard manufactured by IFM (see pht 7, an alternative manufactured by Vega). Pht 6 Pht 7 During the rtatin f the Micr Drum Filter with Flender reductr (see pht 5) the nzzles clean the screen frm the utside using high-pressure spraying. The screw inside the cllectr transprts the slid ut. This prcess will lwer the level until al lw level has been reached. The drum and the pump will cntinue t clean fr abut 10 t 20 secnds befre it stps. The pump, fabricated by Calpeda (see pht 10), prduces a water pressure f 5-6 bar r bar intended fr the sprayers. Water is sucked frm the bttm f the Micr Drum Filter. This water has already been filtered by the. Installing the levels take int accunt the pump des nt run dry. Spray pressure mnitring The Suc pressure transmitter (see pht 8) cntrls the water pressure n the spray bar. Prper peratin f the spray bar is very imprtant. This can nly be guaranteed if the screen is cleaned rderly. A clgged nzzle can cause capacity prblems. Blckage can thus be identified early. Grstraat HG Detinchem telefn: inf@auxill.nl 5

7 Pht 8: Suc pressure transmitter (abve) and water valve (belw) Pht 9: Manmeter Grstraat HG Detinchem telefn:

8 Level cntrl The IFM pressure sensr gives a signal if the level des nt decrease, fr example due t extreme circumstances during the cleaning prcess, and keeps n rising even, it will reach high level. At this pint the supply will be reduced r entirely clsed, until the liquid has reduced t a lwer level by means f the cleaning prcess. When it reaches a lwer level, the supply can be pened again. The filter has been designed and built in such a manner it requires nly a minimum f maintenance. Visual inspectin althugh is required every six mnths. Pht 10 Pump Calpeda Screen specificatins Screens Open area (%) Weight (kg/m²) mm 20 µ mesh H mm 25 µ mesh H/D mm 30 µ mesh H mm 38 µ mesh H/D mm 40 µ mesh H/D mm 53 µ mesh H mm 63 µ mesh H/D mm 75 µ mesh H/D mm 100 µ mesh H/D mm 118 µ mesh H/D mm 140 µ mesh H/D mm 178 µ - 80 mesh D mm µ - 70 mesh D Grstraat HG Detinchem telefn: inf@auxill.nl 7

9 Flw capacity Auxill Micr Drum Filters () Type number Filter area in m² 1,1 2,2 3,4 5,0 6,9 9,2 11,7 14,6 Slids lad 10 mg/litre Maximum flw in m³/hur* Screen size Slids lad 15 mg/litre Maximum flw in m³/hur* Screen size Slids lad 25 mg/litre Maximum flw in m³/hur* Screen size Slids lad 40 mg/litre Maximum flw in m³/hur* Screen size * Kind f slids lad (T) in incming flw can have an effect n the final capacity. Abve numbers are always an indicatin. If yur applicatin is nt mentined in abve list, please cntact Auxill Nederland. Grstraat HG Detinchem telefn: inf@auxill.nl 8

10 Test results Waste water treatment effluent plishing As a result f varius tests in waste water treatment plants we have cmpiled the fllwing analyses f results; using the Auxill Micr Drum Filter in effluent plishing. Waste Water Cmpnents Befre Filter After Filter Reductin Fsfr, ttal 0.35 mg/l 0.08 mg/l DS % BOD 5 DS mg/l 2.70 mg/l 49.63% DS 2206 Ammnia- Nitrgen 0.82 mg/l <0.1 mg/l 87.80% ISO 7150/1 Suspended slids 9.18 mg/l 1.00 mg/l 89.11% Test perfrmed in Denmark December 1996 Suspended slids cntent Befre installatin After installatin January 22th, February 22th, February 12th, April 27th, March 18th, June 8th, April 1st, July 1st, May 26th, June 6th, August 25th, September 17th, September 30th, Octber 22th, Nvember 17th, December 1st, Average 10.5 Average 2.0 The installatin cnsisted f a µ - after 4 tests the results were satisfying s that further testing was nt requested by custmer Ptat prcessing plant remval f starch ut f washing water As a result f varius tests in industrial prductin plants we have cmpiled the fllwing analyses f results, using the Auxill Micr Drum Filter in effluent plishing. Waste Water Cmpnents Befre Filter After Filter Reductin Flw (ttal) 1800 l/h 1674 l/h 126 l/h (slurry) Flw 100 % 93 % 7 % COD mg/l 8960 mg/l 48.5 % N-Ki 319 mg/l 185 mg/l 42.0% Suspended slids 6890 mg/l 180 mg/l 97.4 % Tests perfrmed at the Danisc Fd Factry in Hlland May 1999 with µ Objective t save n waste water treatment charges was achieved by a pssible saving f 450,=/day Ptat prcessing plant remval f starch ut f washing water Waste Water Cmpnents Befre Filter After Filter Reductin Flw (ttaal) 800 l/h 764 l/h 36 l/h (slurry) Flw 100 % 95.5% 4.5 % Suspended slids 25 mg/l 8 mg/l 68 % Grstraat HG Detinchem telefn: inf@auxill.nl 9