CS225877B1 - Method of preparing industrial waste water clearing sorbents by heat treating - Google Patents
Method of preparing industrial waste water clearing sorbents by heat treating Download PDFInfo
- Publication number
- CS225877B1 CS225877B1 CS744981A CS744981A CS225877B1 CS 225877 B1 CS225877 B1 CS 225877B1 CS 744981 A CS744981 A CS 744981A CS 744981 A CS744981 A CS 744981A CS 225877 B1 CS225877 B1 CS 225877B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- dolomite
- waste water
- kubel
- organic
- sulfur
- Prior art date
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- 239000002594 sorbent Substances 0.000 title claims description 15
- 238000000034 method Methods 0.000 title claims description 5
- 239000010842 industrial wastewater Substances 0.000 title claims description 3
- 239000010459 dolomite Substances 0.000 claims description 18
- 229910000514 dolomite Inorganic materials 0.000 claims description 18
- 239000002351 wastewater Substances 0.000 claims description 10
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical class O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 5
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 3
- 239000011593 sulfur Substances 0.000 claims 3
- 229910052717 sulfur Inorganic materials 0.000 claims 3
- 125000001741 organic sulfur group Chemical group 0.000 claims 2
- WWSJZGAPAVMETJ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-3-ethoxypyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C(=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2)OCC WWSJZGAPAVMETJ-UHFFFAOYSA-N 0.000 claims 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims 1
- 239000000920 calcium hydroxide Substances 0.000 claims 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims 1
- 238000005987 sulfurization reaction Methods 0.000 claims 1
- 238000003856 thermoforming Methods 0.000 claims 1
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 description 6
- 238000005352 clarification Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 4
- 238000007669 thermal treatment Methods 0.000 description 4
- 235000012216 bentonite Nutrition 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000003295 industrial effluent Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical group [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229940088417 precipitated calcium carbonate Drugs 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Description
POPIS VYNÁLEZUDESCRIPTION OF THE INVENTION
K AUTORSKÉMU OSVEDČENIUTO THE COPYRIGHT CERTIFICATE
ČESKOSLOVENSKASOCIALISTICKÁREPUBLIKA( 19 ) 225877 (11) (Bl) (22) Přihlášené 12 10 81(21) (PV 7449-81) (40) Zverejnené 29 07 83CZECHOSLOVAKCASOCIALISTREPUBLIC (19) 225877 (11) (Bl) (22) Enrolled 12 10 81 (21) (PV 7449-81) (40) Published 29 07 83
ÚŘAD PRO VYNÁLEZYOFFICE OFFICE
A OBJEVY (45) Vydané 15 10 85 (51) Int. Cl.3 B 01 J 20/04,B 01 J 20/30,C 02 F 1/28A OBJEVY (45) Published 15 10 85 (51) Int. Cl.3 B 01 J 20/04, B01J 20/30, C02F 1/28
Autor vynálezu FILÁK MIREK ing., KUBELKA VÁCLAV dr. Ing. PhMr., MEDVEĎ JÁN RNDr. CSc.,Author of the invention FILÁK MIREK ing., KUBELKA VÁCLAV dr. Ing. PhMr., MEDVEĎ JÁN RNDr. CSc.,
NOVÁK IVAN ing. CSc., BRATISLAVA (54) Spčsob výroby sorbentu na čírenie priemyselných odpadových v6d,termickou úpravou 1NOVÁK IVAN ing. CSc., BRATISLAVA (54) Method of production of sorbent for industrial waste v6d, thermal treatment 1
Vynález sa týká spOsobu výroby sorbentu na čírenie priemyselných odpadných v5d, termic-kou úpravou dolomitu. V súčasnosti sa ako sorbenty použivajú bentonity prírodné a chemickyupravené, ktoré použivajú sa najma v kombinácii s chemickými číriacími prostriedkami. Sá-lej sa používá gama modifikácia kysličníka hlinitého, ktorý sa vyrába žíháním v rozmedzíteplSt 850 až 1 000 °C. Tento je možné po dezaktivácii regenerovat vyžíhaním. V menSejmiere sa používá na čírenie odpadových vňd aj aktivně uhlie, ktoré sa po dezaktivácii vačši-nou spáruje a vápenné mlieko, pri použití ktorého sa odpadové voda sýti kysličníkem uhličitýmVznikajúci zrážaný uhličitan vápenatý má sorpčné vlastnosti. Odpadový bentonit a dezaktivo-vaný zrážaný uhličitan vápenatý sa použivajú na zúrodňovanie poTnohospodárskej pddy. . Je tiež známe, že na neutralizáciu kyslých odpadových v6d sa používá polovypálený do- lomit pálený pri 1 000 °C po dobu 1 hodiny. Spomínané sorbenty majú niekol’ko nevýhod, spo-čívajúcich predovšetkým v tom, že majú poměrně nízku číriacu účinnost, alebo sa nedajú re- v- generovat, čo zvyšuje ekonomická náročnost čistiaceho procesu a spňsobuje ekologické problé- my so skládkou takto získaného odpadu. Iné, napr. aktivně uhlie sú i pri vysokéj čistiacejúčinnosti finančně náročné a ťažko sa z vyčištěných vňd oddeTujú.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for the production of sorbent for the clarification of industrial waste by thermal treatment of dolomite. Currently, natural and chemically modified bentonites are used as sorbents, which are used in particular in combination with chemical clarifiers. The alkali is used for the gamma modification of alumina, which is produced by annealing in the range of 850 to 1000 ° C. This can be regenerated by annealing after deactivation. Activated charcoal is also used actively to clarify waste wastes, which, after deactivation, is also paired with lime milk, with which the waste water is saturated with carbon dioxide. The precipitated calcium carbonate has sorption properties. Waste bentonite and inactivated precipitated calcium carbonate are used to fertilize agricultural soil. . It is also known that a half-burned burn at 1000 ° C for 1 hour is used to neutralize acid waste v6d. These sorbents have several drawbacks, mainly because they have relatively low clarification efficiency or cannot be regenerated, which increases the cost of the cleaning process and causes environmental problems with the waste landfill. Others, such as actively coal, are costly and even difficult to clean, even with high cleaning efficiency.
Teraz sa zistilo, že na čírenie priemyselných odpadových vňd je ako sorbent vhodnýtermicky upravený dolomit spflsobom podl’a vynálezu.It has now been found that dolomite is suitable as a sorbent for clarifying industrial waste wastes according to the invention.
Podstata vynálezu spočívá v tom, že dolomit sa po dobu 0,5 až 3 hodin žíhá při teplo-tě 650 až 950 °C, s výhodou pri teplote 700 až 800 °C a připadne po vychladnutí podrví a roz-frakcionuje na vel’kost častíc od 0,01 do 0,5 mm. 225877 225877 2The invention is based on the fact that the dolomite is calcined at a temperature of 650 to 950 ° C, preferably at 700 to 800 ° C for 0.5 to 3 hours. particles from 0.01 to 0.5 mm. 225877 225877 2
Mechanická úprava vyčíhaného dolomitu sa viaže na druh použitej suroviny. Termickouúpravou dolomitu podl’a vynálezu dochádza k selektívnemu rozkladu uhličitanu horečnatéhoz dolomitu na oxid horečnatý, pričom uhličitan vápenatý ostává nerozložený. Oxid horečna-tý vzniká vo veTmi jemnej aktívnej formě, s veTkým reaktívnym povrchom. Pri číření odpado-vých v3d s takto upraveným dolomitom dochádza súčapne k hydratácii oxidu horečnatého na vy-sokoaktívny hydroxid horečnatý a súčasne k nevratnaj adsorpcii a organických nečistčtz odpadovej vody. Použitý sorbent je možné opakovanou termickou úpravou spfisobom podlá vy-nálezu mnohonásobné regenerovat alebo sa m6že použit v poTnohospodárstve alebo v oceliarstve.The mechanical treatment of the clarified dolomite is related to the type of raw material used. The dolomite thermal treatment of the invention results in the selective decomposition of the magnesium carbonate from dolomite to magnesium oxide, with the calcium carbonate remaining undivided. The magnesium oxide is formed in very fine active form, with a large reactive surface. In the clarification of the wastewater treated with dolomite, hydration of the magnesium oxide is effected as high-activity magnesium hydroxide and, at the same time, the adsorption and organic impurities of the waste water are not reversed. The sorbent used can be repeatedly regenerated or used in agriculture or steel by repeated thermal treatment in accordance with the invention.
Sorbent vyrobený podl’a vynálezu má vysokú čistiaciu účinnost v priemyselných odpadovýchvodách znečistěných nepolárnými nečistotami, ktoré sa len ťažko čistia bežne používanýmisorbentami a chemickými prostřiedkami.The sorbent produced according to the invention has a high purification efficiency in industrial effluents contaminated with non-polar impurities which are difficult to purify by commonly used absorbents and chemical agents.
Predmet vynálezu ilustrujú ale neobmedzujú nasledujúce příklady. Příklad , i 50 kg dolomitu sa vyžíha v rotačnej piecke pri teplote 820 °C tak, že držanie materiá-lu v žiarovom pásme je 30 minút. Vyčíhaný dolomit sa nechá vychladnút na teplotu 20 až 30 °C,rozdrví a rozfrakcionuje na částice hrůbky 0,01 až 0,2 mm. Takto upravený je vhodný pře v potřeby čírenia priemyselných odpadových v8d. Příklad 2 200 kg dolomitového piesku sa žíhá v muflovej peci při 680 °C po dobu 1 hodiny. Vyčí-haný dolomitový piesok sa nechá v muflovej peci ochladit na teplotu 20 až 30 °C, potom sarozdrví a rozfrakcionuje na částice 0,01 až-0j1 mm. Příklad 3 kegenerácia dezaktivovaného sorbentuHowever, the following examples are illustrative of the invention. An example, as well as 50 kg of dolomite, is annealed in a rotary oven at 820 ° C such that the holding of the material in the heat zone is 30 minutes. The calcined dolomite is allowed to cool to 20 to 30 ° C, crushed and broken down into ridge particles of 0.01 to 0.2 mm. Such modified is suitable for the purification of industrial waste. Example 2 200 kg of dolomite sand are calcined in a muffle furnace at 680 ° C for 1 hour. The resulting dolomite sand is allowed to cool in a muffle furnace to a temperature of 20 to 30 ° C, then granulated and broken down to particles of 0.01 to 0.01 mm. Example 3 cegeneration of deactivated sorbent
Použitý sorbent zbavíme přebytku vody odsátím alebo odstředěním, tento sa vysuší pri100 až 130 °C. Vysušený sorbent sa žíhá pri teplote 820 °C tak, že zdržanie v žárovom pásmeje 30 minút. Po ochladení na 30 až 50 °C je opat připravený na čírenie priemyselnej odpa-dovej vody. Příklad 4The used sorbent is freed from excess water by suction or centrifugation, which is dried at 100 to 130 ° C. The dried sorbent is annealed at 820 ° C such that the residence time in the hot zone is 30 minutes. After cooling to 30-50 [deg.] C., the dispenser is prepared for clarification of industrial waste water. Example 4
Použitý sorbent z dolomitického piesku sa zbaví přebytku vody a vysuší pri 100 až130 °C, potom sa žíhá pri teplote 680 °C po dobu 1 hodiny. Příklad 5The dolomitic sand sorbent used is freed of excess water and dried at 100-130 ° C, then calcined at 680 ° C for 1 hour. Example 5
Stanovenie účinnosti sorbentu -*' 1 liter odpadovej vody z termomechaniky, obsah organických látok 760 mg/Og (Kubel)sa přidalo 20 g vápenného mlieka obsahu 20,5 hm % CaO a sytilo sa kysličníkom uhličitýmdo pH 7,5, množstvo organických látok je uvedené v tabuTke. Příklad 6 1 liter odpadovej vody z termomechaniky, obsah organických látok 760 mg/Og (Kubel)sa přidělo 5 g bentonitu, množstvo organických látok po číření v tabuTke.Determination of sorbent efficiency - * 1 liter of waste water from thermomechanics, organic content 760 mg / Og (Kubel) was added 20 g of lime milk containing 20.5% by weight CaO and saturated with carbon dioxide to pH 7.5, the amount of organic matter is listed in Table. Example 6 1 liter of waste water from thermomechanics, organic content 760 mg / Og (Kubel) was added with 5 g of bentonite, the amount of organic matter after clarification in Table.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS744981A CS225877B1 (en) | 1981-10-12 | 1981-10-12 | Method of preparing industrial waste water clearing sorbents by heat treating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS744981A CS225877B1 (en) | 1981-10-12 | 1981-10-12 | Method of preparing industrial waste water clearing sorbents by heat treating |
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| Publication Number | Publication Date |
|---|---|
| CS225877B1 true CS225877B1 (en) | 1984-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CS744981A CS225877B1 (en) | 1981-10-12 | 1981-10-12 | Method of preparing industrial waste water clearing sorbents by heat treating |
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|---|---|
| CS (1) | CS225877B1 (en) |
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1981
- 1981-10-12 CS CS744981A patent/CS225877B1/en unknown
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