Hidrológiai Közlöny 1976 (56. évfolyam)

7. szám - Tóth András–Tóthné Palotai Emese–Dr. Hoffmann István–Dr. Bulkai Lajos–Oláh József: Kísérletek új, hazai alapanyagú derítőszerrel

Tóth A. és mtsai: Kísérletek új, hazai alapanyagú derítőszerrel Hidrológiai Közlöny 1976. 7. sz. 331 IRODALOM [1] Bulkai •— Dobolyi — Körös — Tóth : Harmadfokú szennyvíztisztító módszerek. 1973. Vízügyi Műszaki Gazdasági Tájékoztató. 57. sz. [2] NSZK 1 592 104. sz. szabadalmi bejelentése: Ver­fahren zur Aufbereitung von Rotschlamm. Bejelen­tés napja: 1905. febr. 0. Megjelent: 1972. máj. 10. [3] Magyar szabadalom 151 988. sz. Eljárás felszíni vi­zek ivóvíz céljára, valamint ipari vizek elfolyatására alkalmassá tótelére történő mesterséges tisztítására derítés útján. Bejelentés napja: 1963. jan. 30. Meg­jelent: 1965. dec. 1. [4] Tóth András: Balatonfüredi szennyvízkísérleti ál­lomás előkísérletei. VITUKI jelentés 1972. Buda­pest. [5] Magyar szabadalom 167 398. sz. Eljárás felszíni ós szennyvizek vegyszeres derítésére. Bejelentés napja: 1973. október 16. Megjelent: 1975. aug. 7. [6] A. J. Tóth: Secondary Effluent Polishing by Rapid Sand Filtration. Sesja Naukowa : Wysokoefektywne metody oczyszczania sciekow, Krakow 1975. Experiments with new flocculants of raw materials available in Hungary By Tóth, A. —Tóth (Mrs.), E. P. —Dr. PI off mann, /.— Dr. Bulkai, L.—Oláh, J. Flocculants have thus far been applied mainly in the treatment of surface waters, although chemicals are essential also in the clarification treatment of waste­waters if the recipient is a lake. This is due to the fact that the phosphates liable to cause eutrophication cannot be removed from the wastewater by the conventional biological methods of treatment. This, together with the chemical needed for sludge conditioning, calls for ever-increasing amounts of flocculants at the lowest possible prices. Cheap ferri-sulphate can, however, be applied in combination with aeration only, while for lime treatment high doses are needed and, moreover, the resulting high pH must also be buffered, before the effluent is disposed of. For clarilication the simultaneous use of iron- and aluminium sails was found advantageous, the efficiency of clarilication being then less dependent on the pH of the water. For this reason a flocculant was produced from bauxite by acid processing, utilizing both the iron­and aluminium content present in the bauxite. The manu­facture of the flocculant and the process of clarification have been registered by VITUKI (5). The flocculant can be manufactured also from low-grade bauxite ore, from which no aluminium can be gained by the Bayer process, i. e., such having moduli lower than 7. As indicated by pot-, laboratory- and pilot scale experiments alike, the dosage of crystalline bauxite flocculant is the same as of crystalline aluminium sul­phate. The chemical was found effective in removing both suspended- and organic substances, as well as the dissolved phosphate content from river waters, further from the effluents from biological treatment stages (Tables 2. to 5.). Moreover, it proved economical also in sludge dewatering (Tables 6, 7.). At the Budapest Chemical Works a 2 ton experimen­tal charge of bauxite flocculant was manufactured in December, 1975. 3KcnepMMeHTbi no npHiweHenHio HOBOTO cpe/icTBa am OCBETJIEHHFL BOAM Tom, A. —riaAomau, E. —d-p XoificfiMaii, H. — d-p EyAKau, JI. —OAOX, H. B Beiirpmi cpeacTBa fljiji ocBeTJiemitf BOflbi npHMeH«­I0TCH B 0CH0BH0M flJlfl OßpaÖOTKlI nOBepXHOCTHWX BOFL, OflliaKO OHH HeoGxOAHMbI II flJIJI XHMHMeCKOrO OCBeTJieHlUl CTOHHIIIX BOA, B cjiyiaax Korfla CTOMHbie BOÄbi cőpacbiBa­lOTCji B tienpoTOMHbie Bo«oeMbi. ,D[ejio B TOM, MTO <j)oc(J)aTbi, BbI3bIBai0lHHe 3BTpO(J)HKaUHK) OÖblMHOH ŐHOJIOrii'ieCKOlí 01HCTK0H lie y/iaJlillOTCH H3 CTOMHblX B0/1. YiIHTblBafl 3T0 a raioKe n iioTpeöHocTii B peareiiTax flji>i oöpaöoTKH HJia Tpeöyercji Bee Sojibiuee KOJWiecTBO cpe^cTB ocBeTJieHiui, npimeM no BO3MO>KHOCTH He AoporocToniuHx. OflHaico uiCBbift cyjibiJiaT wejie3a MO>KCT 6biri> npiiMenen Jinm B coqeTaiiiiH c aspauneii, a ocBerjiemie II3BCCTI,IO rpeöyer oieHb őojibtiiHX A03 H K TOMy we HeoOxofliiMa peretiepa­Hiisi B03pociuero 3iiaieHH>i pH. OribiT noflTBep >i<ÄaeT wo öJiaroiipiiflTiio coBMecTHoe npii.«eiieHne cojiefl >«ejie3a n ajnoMHHHH T. K. npn STOM 3([)(|)ei<TiiBHocTb ocBeTjienn>i B Meiibmeii CTeneHH 3aBiiciiT OT BejiHMiiHbi pH. I IoaroMy MI.I npuroTOBium cpeacTBo ;iji$i ocBerjieiniM c IIOMOIHIO KHCJIOTHOH oöpaooTKii ncnojib3y>i npH 3T0M Ő0KCHT, COAepMOUlHH Kai< aJIIOMMHHH T3K H >Ke­Jie30. PenenTypa 3Toro cpeflCTBa n cnocoG ripwvieHeHHii SIBJUIIOTCJI naTeHTOM BHTYKM. (5) OcBeTJiirrejib MO>KHO IipiirOTOBHTb flawe H3 TaKOrO tlI13K0C0pTH0r0 ÖOKCHTa, KOTopbiii He noAAaeTCH oöpaöoTKe MeTOAOM Bafiepa T. e. wweeT MOflyjib HH>Ke 7. NO pe3yjibTaTaM jiaőopaTopHbix H nojiynp0H3B0ACT­ISeHHblX 3KCnepHMeHT0B 113 KpHCTajlH30BailH0r0 Ő0KCH­Toro ocBeTJiHTejiji TpeSyeTca Tai<oe >Ke KOJiimecTBo KaK u H3 i<piiCTaJiH30BaHH0r0 cyjibiJiaTa aJiioMHHiiíi H OH MO>KeT ŐblTb 3(})lJ)eKTHBHO npHMCHCH AJIH yflajieHIlil B3BeUieHHblX ii opraHimecKHX BeiuecTB KaK H3 Cbipoii noBepxHOCTHoii BO^bi Tai< H 113 ÖHOJioraiecKH omimeHHbix CTOIHMX BO« (/pin ii3Bjie iieHi«i (})0C(J)aT0B 113 noc^eflHHx) (Taßji. 2—5). KpoMe 3T0I 0 HOBoe cpeACTBO M0>KeT öbiTb yciieuiHo npii­MeHCHO H ÄJ151 00e3B0>KiiiiaHH>i liiJiaMa (TaÖJi. 6 — 7). B aei<a6pe 1975 r. Ha EyflaneuiTCKOM XiiMimecKOM 3a­BOfle B 3KCIiepilMeHTaJlbHOM IIOpflAKe H3r0T0BJieH0 2 T. OOKCHTHOI O OCBeTJIHTejIfl.

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