SE175782C1

SE175782C1 -

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Publication number: SE175782C1
Authority: SE
Publication date: 1961-01-01

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KLASS 55 d:13/01 INT. KLASS D 21 f PATENTTID FRAN DEN 17 DECEMBER 1952 BEVIDAT DEN 20 APRIL 1961 PUBL10ERAT DEN 20 3UNI 1961 Ans. 10918/1952 den 17/12 1952Hdrtill en ritning J 0 G ALBREKTSSON, GLIMMINGE ocH A M R KARLSTROM, GOTEBORG Satt och anordning for att infora finfordelad luft eller annan gas i vatten vid rening eller klarning av detsamma medelst flotation Uppfinningen avser ett sdtt vid rening eller klarning av vatten medelst flotation, som utOres i en flotationsbehallare, i vilken det fOr flotationshehandling avsedda vattnet inledes och i vilken den for flotationen erforderliga kvantiteten luft (eller annan gas) inledes 'efter att forut ha lasts i en separat, relativt vat-. tenmangden, som shall flotationsbehandlas, mindre mangd vatska, frA.n vilken efter tryckreduktion smh luftblasor frigoras och i flotationsbehallaren upplyfta i vattnet forekommande fasta partiklar till vattenytan i flotationsbekallaren, varifran dessa partiklar avI Ogsnas. CLASS 55 d: 13/01 INT. CLASS D 21 f PATENTARY TIME FROM 17 DECEMBER 1952 PROVIDED ON 20 APRIL 1961 PUBLISHED ON 20 3UN 1961 Ans. 10918/1952 on 17/12 1952In addition to a drawing J 0 G ALBREKTSSON, GLIMMINGE and AMR KARLSTROM, GOTEBORG Set and device for introducing finely divided air or other gas into water during purification or clarification of the same by flotation The invention relates to a solution for purification or of water by means of flotation, which is discharged into a flotation tank, in which the water intended for flotation treatment is introduced and in which the quantity of air (or other gas) required for flotation is initiated after having previously been loaded into a separate, relatively water-. the amount to be flotated, a smaller amount of liquid, from which, after pressure reduction by means of air bubbles, are released and in the flotation tank lift solid particles present in the water to the water surface in the flotation vessel, from which these particles of Ogsnas.

Det ar for flotationens nojaktiga utforande av storsta betydelse, att den i det for flotationsbehandling avsedda vattnet inforda luften bestar sa gott som enbart av ytterst sma. luftblhsor. FOrekomma stora luftblasor i avsevard mangd forsvaras flotationen i hog grad, enar stora luftblasor ej bindas av vid flotationen •eventuellt anvant floeiningsmedel, skada i vattnet befintliga, fOr flotationen lampliga flockar och astadkomma f Or flotationens genomforande skadliga stromningar i vattnet. Enligt en kand meted har man avlett en mindre del av ravattnet fore dettas rening till en skumalstrare, 1 vilken en propeller arbetar for inblandning av luft i denna mindre del av ravattnet och i vilken skumhildande. medel inledes. Det kan harvid givetvis i&e hindras att stora ,skumhlasor bildas. Inhlandningen av luften sker utan anvandning av overtryck, vilket Or olampligt dh darigenom de erhallna luftblasorna ej kunna Ni onskvart sma. Bl. a. or det i dylikt fall ocksa nodvandigt att anvanda relativt stora mangcler vatska f8r infOrandet air luften i vattnet som skall flotationsbehandlas. Eljest blir lufttillf orseln otillracklig. It is of the utmost importance for the accurate execution of the flotation that the air introduced into the water intended for flotation treatment consists almost exclusively of extremely small ones. luftblhsor. In the presence of large air bubbles in a considerable amount, the flotation is defended to a high degree, if large air bubbles are not bound off during the flotation • any floating agent used, damage to the water existing, for the flotation flammable flocks and to prevent the flotation's harmful flows in the water. According to a method, a small part of the amber water has been diverted before its purification to a foam generator, in which a propeller works for mixing air in this smaller part of the amber water and in which foam holding. funds are initiated. This can of course prevent the formation of large, foam beads. The inhalation of the air takes place without the use of overpressure, which is unreasonable, ie as a result of which the air bubbles obtained cannot be smothered. Bl. a. in such a case it is also necessary to use relatively large quantities of liquid for the introduction of air into the water to be treated by flotation. Otherwise the air supply will be insufficient.

Sattet enligt uppfinningen kannetecknas i huvudsak darav, att den namnda separata vatskan, som luftmattats under lampligt Overtryck, utsattes for en hastig tryckreduktion, da en vatske-luftdispersion med utomordentligt sma luftblasor erhalles, och att denna dispersion forst darpa infores i det vatten, som shall flotationsbehandlas. Pa delta satt kan man genomfora flotationen med en noggrant beredd, alltsh f6r andamillet hogvardig luftdispersion, vars tillforsel till avlopps- eller ravattnet latt kan regleras till den mangd, som passar till det forevarande vattnet. HOr komma inga luftblasor av besvarande storlek att upptrada i flotationsbehallaren. Kvantiteten av vatske-luftdispersionen Or sasom namnts i forhallande till den vattenmangd, van i den infores, helt liten, kostar i framstallning en obetydlighet och verkar leke nedbrytande ph I vattnet forefintliga flockar. The method according to the invention is mainly characterized by the fact that the said separate liquid, which has been air-matted under suitable overpressure, is subjected to a rapid pressure reduction, when a liquid-air dispersion with extremely small air bubbles is obtained, and that this dispersion is first introduced into the water to be flotation treated. In this way, the flotation can be carried out with a carefully prepared, all for the spirit, high-quality air dispersion, the supply of which to the sewage or amber water can easily be regulated to the amount that suits the water present. No air bubbles of the corresponding size will appear in the flotation tank. The quantity of the liquid-air dispersion Or as it is called in relation to the amount of water used in it is completely small, costs in production an insignificance and seems to play degrading ph In the water existing flocks.

Luftblhsornas kolloidala eller nara nog kolloidala storleksordning tillater deras haftning Oven vid mycket sma partiklar. Blasorna hinn.a under flotationstiden icke att Vala till sa.- dart storlek, att de frigora sig frail partiklarna resp. flockarna. Fastmera komma blasorna att inga i under bildning varande flockar, vilka harigenom forIanas en mycket god stigformaga. P0 grand air att dispersionens lufthlO sor ha kolloidal beskaffenhet kunna desamma ocksa i manga avloppsvatten och naturliga rOvatten tjana som flocknin.gsmedel oth som shdant ersatta eljest brukliga kemiska flockningsmedel, sasom hartslim. The colloidal or almost colloidal magnitude of the air bubbles allows their adhesion. Even with very small particles. During the flotation period, the blisters do not appear to be of such a size that they free themselves from the particles resp. the flocks. The blisters come to the fore that there are no flocks in formation, which thereby give a very good path shape. Due to the colloidal nature of the dispersion's air dispersions, they can also be found in many wastewater and natural wastewater as flocculants and as substitutes for otherwise customary chemical flocculants, such as resin adhesives.

Dispersionsmedlet Or som regel vatten, men kan ocksh vara en annan vatska. Nar vatten anvandes, valjer man i syfte att erhalla en mojligast stabil dispersion ett rent sadant. Lampligen anvander man for detta andamal genom flotationsbehandlingen utvunnet vat-ten. errar genom uppfinningens utovande ett hoggradigt renat vatten erhalles. 2— — Uppfinningen avser ocksh en anardning for utfarande av det har avsedda sattet, vilken anordning är fOrsedd med en flotationsbehalTare, i vilken det for flotation avsedda vattnet inledes genom ett inlopp och som upptill är forsedd med rarliga organ for avlagsnande av den genom flotationen pa vattenytan i flotationsbehallaren uppflutna partikelmassan. Denna anordning kanneteeknas vasentligen darav, att vid denna flotationsbehallare at anordnat ett i forbindelse med en ledning far tryckluft staende karl, till -vilket en tillloppsledning far den separata, relativt vattenmangden, som skall flotationsbehandlas, mindre mangden vatska ãr ansluten och till vilket kiln Or. ansluten en avloppsledning f8r den luftmattade vatskan, vilken avloppsledning Or forsedd med en tryekreduceringsventilanordning, som Or sã anordnad, att p0 dess lagtryckssida den de utomordentligt sma luftblasorna innehailande vatske-luftdispersionen bildas, saint att tryekreduceringsventilanordningens lagtryekssida Or forbunden med flotationsbehallaren vid eller fore dess inlopp for tillforsel av derma vatske-luftdispersion till -vattnet 1 flotationsbehallaren. Harvid Or karlets ovre del, i vilken av genam ledningen tillford tryckluft en luftkudde uppratthalles, medelst en ledning fOr tryckluf ten farbunden med tilloppsledningen far den relativt vattenmangden, som skall flotationsbehandlas, mindre mangden vatska, och 1 denna tillloppsledning är inkopplad en ejektor, i vilken luften blandas med denna vatska och fran vilken denna blandning drives in i karlet. Med fardel Or den anordningen vidtagen, att avloppsledningen frau karlet utmynnar i en spridare for finfordelning av vatske-luftdispersionen i vattnet, som skall flotationsbehandlas. The dispersant Or is usually water, but may also be another liquid. When water is used, in order to obtain the most stable dispersion possible, a pure one is chosen. For this purpose, water recovered by the flotation treatment is used for this purpose. By practicing the invention a highly purified water is obtained. The invention also relates to a device for carrying out the intended method, which device is provided with a flotation container, in which the water intended for flotation is introduced through an inlet and which at the top is provided with pleasant means for depositing it by the flotation on the water surface in the flotation tank inflated particulate matter. This device can be essentially characterized by the fact that in this flotation tank a man standing in connection with a line receives compressed air, to which a supply line receives the separate, relative amount of water to be treated for flotation, the smaller amount of liquid is connected and to which kiln Or. connected to a drain line for the air-fed liquid, which drain line Or is provided with a pressure reducing valve device, which Or is arranged so that on its low pressure side the liquid-air dispersion containing the extremely small air bubbles is formed, or the pressure reduction valve supply of this liquid-air dispersion to the water in the flotation tank. In this case, the upper part of the vessel, in which an air cushion is supplied by the conduit through the line, is maintained by means of a line for the compressed air connected to the supply line, the relative amount of water to be treated for flotation is less liquid, and in this supply line an ejector is connected. the air is mixed with this liquid and from which this mixture is driven into the vessel. By means of a conveyor part, the device is taken so that the sewer line from the vessel empties into a spreader for atomizing the liquid-air dispersion in the water, which is to be treated for flotation.

Ett par soul exempel valda utforingsformer av anordningen far utfOrande av sattet enligt uppfinningen visas 0 den bifogade ritningen. Fig. 1 Niser den ena och fig. 2 den andra utforingsformen huvudsakligen i vertikal genomskarning. I fig. 2 Oro vissa med fig. 1 gemensamma delar endast antydda medelst en med prickstreckade linjer visad rektangel. Embodiments of the device selected by the invention according to the invention are shown in the accompanying drawing. Fig. 1 shows one and Fig. 2 the other embodiment mainly in vertical section. In Fig. 2, certain parts common to Fig. 1 are indicated only by a rectangle shown in dotted lines.

Flotationsbehallaren 1 enligt fig. 1 Or, om man bortser Iran det centrala inloppet 2, de perifera avloppsroren 3' och den genom behallarens ovre gavel nedskjutande, roterbara a-vsugningsledningen 4, sluten. Avsugningsledningen 4 tillsammans med munstyeket 5 sal.- jer fOr uppratthallandet av konstant undertryek i behallaren 1 samt avlagsnar den ph vattenytan i hehallaren uppflutna massan. Inloppet 2 neddoppar I det for flotationsbehandling avsedda vattnet i en lada 6, dit det inkommer genom en ranna 7 och vattnet stiger genom undertrycket i behallaren 2 till den av storleken av namnda undertryck bestamda nivan. Det far avloppsraren 3' gemensamma samlingsraret 3 nedskjuter i en som vatten lOslade. 8', som kart installas lamplig hajd. Fran laden 8' nedrinner det renade vattnet till en samlingslada 8, varifran det uttages far olika andamal. Overskjutande vatten rinner Over en vagg 9' till avloppet 9. The flotation tank 1 according to Fig. 1 Or, if one disregards Iran the central inlet 2, the peripheral drain pipes 3 'and the rotatable a-suction line 4 projecting through the upper end of the tank, closed. The suction line 4 together with the nozzle 5 sells for maintaining a constant negative pressure in the container 1 and removes the pH of the water surface in the whole holder. The inlet 2 immerses in the water intended for flotation treatment in a barn 6, where it enters through a gutter 7 and the water rises through the negative pressure in the container 2 to the level determined by the magnitude of said negative pressure. The common collecting pipe 3 'drains the drain pipe 3' into a water-discharged water. 8 ', as map installed lamplig hajd. From the barn 8 'the purified water flows down to a collecting barn 8, from which it is taken for various purposes. Excess water flows over a rock 9 'to the drain 9.

For beredning av den vid flotationen anvanda vatske-luftdispersionen kan tjana den anordning, som visas mom den prickstreckade rektangeln A. 10 Or ett slutet karl, t. ex av vanlig hydrofortyp, vilket Or fyllt med vatska, vanligen vatten, till lamplig niva. Till karlets ovre del Or ansluten en ledning 11, genom vilken luft av nagorlunda konstant tryck in-fares. Vid hittills utforda forsok har ett tryck av 5 atm. kommit till anvandning. I karlet bildas Ohs& en luftkudde, fran vilken den far vattnets luftmattning erforderliga luften en-Mlles. Far att astadkomma en stor kontaktyta mellan vatten och luft och harigertom uppna en snabh lasning av luften, later man vattnet cirkulera genom en ledning, I vilken en ejektor 13 Or inkopplad. Deana suger in luft fain karlets ovre del, varvid luften inblandas i det cirkulerande vattnet. Far att On mera haja inblandningseffekten Or i ledningen 21 efter ejektorn 13 en dispergeringsanordning I form av borstar 23 av exempelvis nylon anbragt. Genom en till karlets 10 nedre del ansluten ledning 24 gar vattnet via en ledning 16 till en pump 18, som Astadkommer det for eirkulationen erforderliga trycket, passerar en med regleringsventil 20 forsedd ledning 19 till ejektorn 13, soil genom ledningen 12 suger in luft frau behallarens Ovre del och blandar denna luft med vattnet. Genom ledningen 21 aterfores det luftblandade vattnet genom ett perforerat, ringformat ror 22 till karlet 10 ett stycke ovanfor uttagsappningen. For the preparation of the liquid-air dispersion used in the flotation, the device shown by the dotted rectangle A may serve. Connected to the upper part Or of the vessel is a line 11, through which air of fairly constant pressure is introduced. In so far challenging trials have a pressure of 5 atm. come into use. In the vessel, Ohs & an air cushion is formed, from which it obtains the air-saturated air required by the water. If a large contact area is established between water and air and, on the other hand, a rapid release of the air is achieved, the water is allowed to circulate through a line, in which an ejector 13 Or is connected. Deana sucks in air from the upper part of the man, mixing the air into the circulating water. In order to increase the mixing effect Or in the line 21 after the ejector 13, a dispersing device in the form of brushes 23 of, for example, nylon is arranged. Through a line 24 connected to the lower part of the vessel 10, the water passes via a line 16 to a pump 18, which provides the pressure required for the circulation, a line 19 provided with control valve 20 passes to the ejector 13, soil through the line 12 sucks air from the container Upper part and mixes this air with the water. Through the line 21, the air-mixed water is returned through a perforated, annular tube 22 to the vessel 10 some distance above the outlet opening.

Det ph detta satt under tryek luftmattade vattnet uttages genom en avloppsledning 27 i karlets 10 botten. Far att fria luftblasor ieke skein folja med det avtappade vattnet, Or runt uttaget i karlet anordnad en krage 25. Nar vattnet passerar en i avloppsledningen 27 inkopplad tryekreduceringsventilanordning 26, med vilken Oven den uttagna luftmattade vattenmangden regleras, -varvid trycket hastigt nedgar, farvandlas det luftmattade vattnet till den anskade luftdispersionen med utomordentligt sma luftblasor. Genom avloppsledningen 27 ledes denna dispersion till forbrukningsstallet, vilket har Or rummet under inloppet 2. For att erhalla en majligast god fOrdelning av dispersionen i det genom inloppet 2 uppstigande vattnet, som shall renas genom flotationen, Or till finden av avloppsledningen 27 ansluten en spridare i form av ett perforerat rorsystem 28. Det genom ventilanordningen 26 uttagna vattnet ersattes med vatten fran pumpen 15, som genom tilloppsledningen 14, 16, 19 och 21 presser in. erforderligt vatten i karlet 10. The pH this was under pressure air-fed water is taken out through a drain line 27 in the bottom of the vessel 10. If free air bubbles do not appear to follow with the drained water, a collar 25 is arranged around the outlet in the vessel. air-fed the water to the desired air dispersion with extraordinarily small air bubbles. Through the drain line 27 this dispersion is led to the consumption stall, which has the space below the inlet 2. In order to obtain the best possible distribution of the dispersion in the water ascending through the inlet 2, which is to be purified by the flotation, Or to the fin of the drain line 27 connected a spreader in in the form of a perforated pipe system 28. The water taken out through the valve device 26 was replaced with water from the pump 15, which is forced in through the supply line 14, 16, 19 and 21. required water in the vessel 10.

Organ Oro anordnade far att automatiskt uppratthalla konstant vatskeniva i karlet 10. Organ Oro arranged the father to automatically maintain a constant water level in the tub 10.

— — Den pumpen 15 tillhorande motorns arbete regleras .salunda medelst i karlets 10 vagg insatta elektroder 30 av vatskenivan i karlet 10, och derma niva. kan clarfor endast variera mellan de bada elektroderna. Det for beredning av luftdispersionen anvanda vattnet uttages lampligen genom veatilen 14' och ledningen 14 fran det genom flotationsbehandlingen renade vattnet i lddan 8. Systemet arbetar automatiskt och luftdispersionen uttages kontinuerligt och i anskad mangd. The operation of the motor belonging to the pump 15 is thus regulated by means of electrodes 30 inserted in the cradle of the vessel 10 by the water level in the vessel 10, and this level. clarfor can only vary between the two electrodes. The water used for the preparation of the air dispersion is suitably taken out through the veatil 14 'and the line 14 from the water purified by the flotation treatment in line 8. The system works automatically and the air dispersion is taken out continuously and in the required amount.

Av uppfinningens art torde framga, att forfaringssattet joke rar begransat till att tillAmpas i samband med den i fig. 1 -visade typen av flotationsanordning utan kan. anvandas vid andra slag av flotationsanordningar. It will be apparent from the nature of the invention that the method of joke is limited to be applied in connection with the type of flotation device shown in Fig. 1 without a can. used in other types of flotation devices.

Fig. 2 visar exempelvis anordningen for beredning av luftvattendispersionen i samband med en under atmosfarstryck arbetande flotationsanordning. I fig. 2 betecknar 1 en oppen flotationshehallare av rektangular form, till vars ena ande inloppet 2 for det inkommande vattnet ar anslutet. Den ph ytan uppflutna massan avlagsnas medelst ett langsamt Oende skrapverk 34-36,, som skjuter massan uppfor det 'sluttan.de planet 37, varifran den gar vidare till schaktet 38. Fig. 2 shows, for example, the device for preparing the air-water dispersion in connection with a flotation device operating under atmospheric pressure. In Fig. 2, 1 denotes an open flotation hopper of rectangular shape, to one end of which the inlet 2 for the incoming water is connected. The surface floated mass is deposited by means of a slow Oende scraper 34-36, which pushes the mass up the inclined plane 37, from where it proceeds to the shaft 38.

Det renade vattnet uttages genom oppningar 33 i behallarens botten och ledes genom en ledning 32 till en nivalada 31, varifran vattnet .aver det reglerbara skibordet 31' rinner till avloppet 3. The purified water is taken out through openings 33 in the bottom of the container and is led through a line 32 to a level 31, from which the water over the adjustable ski table 31 'flows to the drain 3.

Vattnet, .som skall flotationsbehandlas, uppfordras av pumpen 39 till flotationsbehallaren 1. Far reglering air vattenkvantiteten dr i ledningen 7 mellan pumpen 39 och inloppet 2 insatt en ventil 7'. Luftdispersionen infores lampligen pa en eller flera punkter mellan ventilen 7' och inloppet 2. Fore pumpen 39 le-des vattnet genom en ledning 47 till en facia 40, i vilken en konstant vattenniva. uppratthalles genom reglering av en i tilloppsledningen 47 insatt trottelventil 46, vilken medelst havstangsarmar 43, 44 och 15 paverkas air Lottoren 41. The water to be treated for flotation is requested by the pump 39 to the flotation tank 1. The regulation of the water quantity dr in the line 7 between the pump 39 and the inlet 2 is fitted with a valve 7 '. The air dispersion is suitably introduced at one or more points between the valve 7 'and the inlet 2. Before the pump 39 the water is led through a line 47 to a façade 40, in which a constant water level. is maintained by regulating a throttle valve 46 inserted in the supply line 47, which is actuated by means of sea rod arms 43, 44 and 15.

Den far flotationen anvanda luftdispersionen framstalles i ett aggregat, som kan vara air samma principiella utforande som i samband med den flint beskrivna utforingsformen av flotationsanordningen, och angives darfor endast som en av prickstreckade linjer inramad rektangel A. The air dispersion used for flotation is produced in an assembly which can be of the same basic design as in connection with the flint-described embodiment of the flotation device, and is therefore indicated only as a rectangle A framed by dotted lines.

Tryckluftert infores alltsa genom ledningen 11 och vattnet eller vatskan genom ledningen 14. Den fardiga vatske-luftdispersionen uttages genom avloppsled:ningen 27 och infores pd. en eller flera punkter i pumpledningen, vanligen pa trycksidart air pumpen 39. Arbetssattet blir analogt med det vid den forsta utforingsformen och torde dArfOr ej tarva flagon beskrivrting. Compressed air is thus introduced through the line 11 and the water or liquid through the line 14. The finished liquid-air dispersion is taken out through the drain line 27 and introduced pd. one or more points in the pump line, usually on the pressure side air pump 39. The mode of operation becomes analogous to that of the first embodiment and should therefore not need to be described.

Det med A betecknade aggregatet kan variera med avseende till form och konstruktion, utan. att uppfinningens grundtanke fra.ngh.s. The unit denoted by A may vary in shape and construction, but. that the basic idea of the invention fra.ngh.s.

Claims

Patent claim:

1. When purified or clarified in water by means of flotation, which is carried out in a flotation tank, in which the water intended for flotation treatment is initiated and in which the quantity of air (or other gas) required for flotation is initiated after having previously been loaded in a separate, relative to the amount of water to be treated by flotation, a smaller amount of liquid, which after pressure reduction small air bubbles are released and in the flotation tank lift solid particles present in the water to the water surface in the flotation tank, from which these particles are deposited. suitable overpressure, was subjected to a rapid pressure reduction, as a liquefied air dispersion with extraordinarily small. air bubbles are obtained, and this dispersion is first introduced into the water to be treated by flotation.

2. According to patent claim 1, it has been clarified that the air is dissolved in practically clean water.

Salt according to patent claim 2, characterized in that the air is dissolved in pure water recovered during the flotation treatment.

Device for carrying out the set according to patent claim 1 with a flotation container, in which it for flotation. intended water is initiated through an inlet and as at the top dr f Equipped with movable organs. for removal of the particulate mass floated by the flotation on the water surface in the flotation tank, characterized in that a vessel (10) standing in connection with a line (11) for compressed air is arranged at this flotation hopper (1); to which a supply line (14, 16, 19, 21) for the separate, relative amount of water to be treated for flotation, the smaller amount of liquid Ar is connected and to which potassium connected a drain line (27) receives the air-fed wart, which. drain line Is provided with a pressure reducing valve device (26), which is so arranged that on its legal pressure side it. the extremely small air bubbles containing the liquid-air dispersion are formed, and that the low pressure side of the pressure reducing valve device is connected to the flotation tank at or before its inlet (2) for supply of this roller air dispersion to the water in the flotation tank.

5. Device according to claim 4, characterized in that the upper part of the vessel (10), in which of an air cushion is maintained by compressed air supplied air, is connected by means of a charge (12) for the compressed air to the supply line (14, 16, 19, 21 ). for the relative amount of water to be treated by flotation, the smaller amount of liquid, and that in this supply line Or an ejector (1,3) is connected, in which the air is mixed with this - - volcanic and from which this mixture is forced into the vessel (10) .

Device according to patent claims 4 and 5, characterized in that the sewer line

7. from the tub (10) opens into a diffuser

8. for the atomization of the liquid-air dispersion in the water, which is to be treated by flotation. Request publications: Patentskrif ter frein Sverige 94456, 108472; U. S. A. 864856, 1 376 459, 2 220 574, 2 370 772, 2 606 150. Stockholm 1961. Hung "Boktr. P. A, Norstedt & Saner. 610089