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Appl. Sci. 2020, 10, 8687 6 of 18 Appl. Sci. 2020, 10, x FOR PEER REVIEW 6 of 19 the SD technology. Following the influence of the WW flowrate at constant disc rotational speeds and also the influence of the disc rotational speed at constant WW flowrates on the color and suspended color and suspended solids removal, these quality indicators are discussed in the following solids removal, these quality indicators are discussed in the following subsections. subsections. Figure 3. Variation in the time of the textile WW suspended solids (MS) and colour at a 30 L/h flowrate Figure 3. Variation in the time of the textile WW suspended solids (MS) and colour at a 30 L/h flowrate and three different rotational speeds: (a) 100 rpm, (b) 300 rpm, (c) 500 rpm. and three different rotational speeds: (a) 100 rpm, (b) 300 rpm, (c) 500 rpm. It is worth mentioning that, after the application of the SD technology to the studied textile It is worth mentioning that, after the application of the SD technology to the studied textile wastewater, only very low changes in pH (no more than ±0.5 units) and temperature (no more than wastewater, only very low changes in pH (no more than ±0.5 units) and temperature (no more than ±4 ◦°C) took place; thus, one can conclude that no significant changes in the treated WW pH and ±4 C) took place; thus, one can conclude that no significant changes in the treated WW pH and temperature by SD technology at room temperature and the usual collected textile WW pH are temperature by SD technology at room temperature and the usual collected textile WW pH are obtained. obtained. 3.1.1. Flowrate Influence on the Effluent Treatment Efficiency Using SD Setup 3.1.1. Flowrate Influence on the Effluent Treatment Efficiency Using SD Setup The color removal for five different WW flowrates fed on the spinning disc at constant disc rotatiTonhael cspoleoerdsreismroepvarelsfeonrtefdiviendFigffueren4ta–Wg.WAsflonwercaatnesobfesdervoeninthFeigsuprienn4ain, gthedihsicghaetsctornemstaonvtaldsiosfc croltoartiaotn1a0l0srpemedwseisrere4p5.r2e1s%enatted10inL/Fhigafutreer540a–mgi.nAasnodn4e1c.6a7n%obatse1r5vLe/hinaFftiegru6r0em4ai,nt;haeshthigehWesWtrflemoworvatles ionfcrceoaloserda,tt1h0e0mrpaxmimwuemrea4t5ta.2in1%edadti1sc0oLlo/hraatifotenre5ffi0 cmieincaynde4cr1e.6a7s%ed.atA1t52L50/hrpafmte,rth60e mainx;imasutmhecWoloWr rfelomworvaatlewinacsr3ea3s.1e6d%, tfhoer2m0aLx/ihmaufmtera6t0taminiend,adsisceoelnoriantiFoinguerfefi4cibe,nwcyhidleecarte4a0s0edr.pmAtth2e50mrapxmim,utmhe rmegaixsitmeruedmvcaolluoerwreamso4v6a.4l8w%asat3230.1L6%/hfaofrte2r05L0/mhianft(eFrig60urmei4nc,).asThseebneisntcFoiglourere4mb,owvahlialemaotn4g00threpsme rtuhnesmwaaxsim53u.m50%re,grisetgeirsetdervedaluate1w5aLs/h46a.4n8d%55a0t 2r0pmL/,haaftfeterra5500minin(Foipgeurraeti4ncg).tTimhebinetsetrcvoalloorfrethmeoSvDal saemtuopng(Ftihgeusrer4udn)s.wAatsth53e.5805%0 r,premgidstiesrcerdoatatt1i5onLa/hl sapneded55,0threpm,aaxfitmeruam50dmiscinolopraetriaotninwgatism4e8i.0n3te%rvatl 1o5fLth/heaSfDterse6t0umpi(nF,igausrseho4wd)n. AintFthigeu8r5e04erp,wmhdiliescatro1t2a0t0iornpaml stpheelda,rgthesetmvalxuiemsuomfcdolioscrorleomraotvioanlwas 3498..5063% at 15 L//h afftter 60 miin,(Faisgsuhroew4fn).inNFoigreulrev4aen,t wdhatialewater1e20o0btrapinmedthaet l1a2rg00esrtpvmaluaensdo3f0cLol/ohr, trheumsothviaslflwoawsr3a9te.5i6s%noattr1e5prLe/shenatfetedr. 6O0nme cinan(Fniogtuicret4hfa).tNatothrelleavragnesttdiantvaeswtiegraeteodbtraoitnaetidonaatl1s2p0e0edrpomf 1a5n0d0r3p0mL/fhor,theus15thLi/shffllowrate,itshneodtisrceoplroersaetinotnede.ffiOcnieencyaninncroetaicsedt,hraetacahtitnhge4l9a.r6g4e%st,ainftveers3t0igmatiend, arnodtathioenadl espcreeadseodf,1w50h0ilerptmhefotrhtehrem1e5aLsu/hrefdloflworwatrea,ttehseddidisncoltoreantidoenr eafnfyiciemnpcyroivnecmreeanstesdr,ergearcdhiing t4h9e.6c4o%lo,rarfetmero3v0alm,tihnu,satnhdeythaernendoetcrepasredse,nwtehdilientFhieguorthee4rg.measured flowrates did not render any improvements regarding the color removal, thus they are not represented in Figure 4g.PDF Image | Textile Wastewater Treatment on a Spinning Disc Reactor
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