DK157186B - PROCEDURE FOR SULFURING OF WASTE WATER USING HYDROGEN PEROXIDE - Google Patents
PROCEDURE FOR SULFURING OF WASTE WATER USING HYDROGEN PEROXIDE Download PDFInfo
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- DK157186B DK157186B DK107680AA DK107680A DK157186B DK 157186 B DK157186 B DK 157186B DK 107680A A DK107680A A DK 107680AA DK 107680 A DK107680 A DK 107680A DK 157186 B DK157186 B DK 157186B
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- wastewater
- hydrogen peroxide
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims description 34
- 239000002351 wastewater Substances 0.000 title claims description 31
- 238000000034 method Methods 0.000 title claims description 12
- 238000011282 treatment Methods 0.000 claims description 24
- 150000003568 thioethers Chemical class 0.000 claims description 13
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 7
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims 1
- 230000023556 desulfurization Effects 0.000 claims 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 12
- 241000196324 Embryophyta Species 0.000 description 11
- 238000000746 purification Methods 0.000 description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 229910052717 sulfur Inorganic materials 0.000 description 4
- 239000011593 sulfur Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 235000019645 odor Nutrition 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- RSPISYXLHRIGJD-UHFFFAOYSA-N OOOO Chemical compound OOOO RSPISYXLHRIGJD-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 150000002978 peroxides Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229940059867 sulfur containing product ectoparasiticides Drugs 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000380131 Ammophila arenaria Species 0.000 description 1
- 241001442654 Percnon planissimum Species 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000011418 maintenance treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- PVRJOEAYRBQPLF-UHFFFAOYSA-N n-(2-hydroxypropyl)-n-(2-oxopropyl)nitrous amide Chemical compound CC(O)CN(N=O)CC(C)=O PVRJOEAYRBQPLF-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- GTUJJVSZIHQLHA-XPWFQUROSA-N pApA Chemical compound C1=NC2=C(N)N=CN=C2N1[C@@H]([C@@H]1O)O[C@H](COP(O)(O)=O)[C@H]1OP(O)(=O)OC[C@H]([C@@H](O)[C@H]1O)O[C@H]1N1C(N=CN=C2N)=C2N=C1 GTUJJVSZIHQLHA-XPWFQUROSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Sewage (AREA)
- Treating Waste Gases (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
DK 157186 BDK 157186 B
Den foreliggende opfindelse angâr en fremgangsmâde til af-svovling af spildevand indeholdende sulfider og hydrogensulfid ved hjælp af hydrogenperoxid med henblik pâ at fjerne sâdanne forbindelser.The present invention relates to a process for desulfurizing wastewater containing sulfides and hydrogen sulfide by hydrogen peroxide in order to remove such compounds.
5 Tilstedeværelsen i spildevand. af svovlholdige produkter, der almindeligvis dannes ved reduktion af sulfater un-der indvirkning af anaerobe bakterier, frembyder en dob-belt ulempe: afgivelsen af de kvalmende lugte fra et toxisk produkt, hydrogensulfid, samt en kraftig korrosion 10 af rerforingerne og af de installationer til rensnings- behandlinger, som kan være udfort i métal eller i béton.5 The presence in wastewater. of sulfur-containing products, usually formed by the reduction of sulphates under the influence of anaerobic bacteria, presents a twofold disadvantage: the release of the nauseating odors from a toxic product, hydrogen sulphide, and a strong corrosion 10 of the casings and of the installations for the purification treatments which may be performed in metal or in concrete.
Man har længe foreslâet talrige behandlingsmetoder til at f jerne svovlholdige produkter fra spildevand sâsom beluftning og oxidering.Numerous treatment methods have been proposed for long periods to remove sulfur-containing products from wastewater such as aeration and oxidation.
15 Anvendelsen af hydrogenperoxid HgOg som oxiderende reak- tionskomponent ved behandling af spildevand er blevet om-talt i USA patentskrift nr. 2 070 856, idet oxideringen af H2S samt af sulfider ved hjælp af H2O2 i sig selv er en velkendt reaktion.The use of hydrogen peroxide HgOg as the oxidizing reaction component in the treatment of wastewater has been disclosed in United States Patent No. 2,070,856, the oxidation of H 2 S and of sulfides by H 2 O 2 itself being a well-known reaction.
20 Behandlingen af svovlholdigt spildevand med hydrogen peroxid er blevet omtalt i fransk patentskrift nr.The treatment of sulfur-containing wastewater with hydrogen peroxide has been disclosed in French patent no.
2 126 199» som anbefaler en behandling omfattende til-forslen af 1^2 ved et enkelt punkt i spildevandssyste-met, eller ved indgangen til behandlingsanlægget, og som 25 omfatter pâ hinanden folgende en forudgâende tilbered- ningsfase, hvor man anvender fra 4 til 10 gange den stok-iometriske ækvivalentværdi i forhold til svovlet og til hydrogensulf idet i det indstremmende spildevand, derpâ en vedligeholdende behandlingsperiode, hvor man anvender fra 30 en til to gange denne stokiometriske ækvivalentværdi.2 126 199 'which recommends a treatment comprising the supply of 1 ^ 2 at a single point in the wastewater system, or at the entrance to the treatment plant, and which comprises 25 consecutive a preceding preparation phase employing from 4 to 10 times the stoichiometric equivalent value to the sulfur and to hydrogen sulfide, in the effluent wastewater, thereupon a maintenance treatment period using from 30 to twice this stoichiometric equivalent value.
Denne fremgangsmâde tillader i visse tilfælde, at man op-nâr ved indgangen til behandlingsanlægget et spildevand, 2This procedure allows, in certain cases, to reach a waste water at the entrance to the treatment plant.
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som praktisk tait ikke indeholder mere sulfid eller hydro-gensulfid, men den sikrer ikke en tilfredsstillende be-skyttelse af det samlede ledningsomrâde, som ligger forud for oprensningsanlægget.which practically does not contain more sulphide or hydrogen sulphide, but it does not ensure a satisfactory protection of the total conduit area which precedes the purification plant.
5 Man har nu konstateret, at for at opnâ gode resultater i almindelighed sâvel med hensyn til beskyttelsen af ledningsnettet, som med hensyn til indholdet af sulfider eller af hydrogensulfid ved indgangen til rensningsan-lægget, var det nedvendigt, at tilsætning af hydrogen-10 peroxid blev foretaget pâ forskellige steder i tilfor- selssystemet for spildevand til behandligsanlægget, idet sâ-danne steder skulle være regelmæssig fordelt inden for hele ledningsnettets udstrækning.5 It has now been found that in order to obtain good results in general as well as with respect to the protection of the conduit, as with the content of sulphides or of hydrogen sulphide at the entrance to the purification plant, it was necessary that addition of hydrogen peroxide was carried out at various locations in the wastewater supply system to the treatment plant, such sites being regularly distributed throughout the entire wiring network.
Opfindelsen er derfor ejendommelig ved, at man tilforer hydro-genperoxid pâ flere steder i det System, der forer spildevandet til behandlingsanlægget, idet sâdanne steder er regelmæssigt fordelt inden for hele systemets omrâde, hvorved de ovenfor nævnte ulemper ved den kendte teknik afhjælpes.The invention is therefore characterized by the addition of hydrogen peroxide at several locations in the System which feeds the wastewater to the treatment plant, such sites being regularly distributed over the entire system area, thereby alleviating the above-mentioned disadvantages of the prior art.
De- nodvendige mængder H2O2 skal ikke være fastlagt for-inden, de afhænger faktisk ikke alene af sulfidindholdet i det vand, der skal behandles, men ligeledes af de ka-rakteristiske egenskaber for det ledningsnet, der er i anvend-e-lse, sâsom- rorforingernes 1-ængde, gennemsnitsop*-holdstiden, temperaturen etc.The required amounts of H2O2 must not be determined before, in fact, they depend not only on the sulfide content of the water to be treated, but also on the characteristic properties of the wiring harness in use, such as - the 1-length of the rudder liners, the average up * holding time, the temperature etc.
Porsog, som man har udfort pâ spildevandsanlæg under faktisk anvendelse, har vist, at man opnâede den bedste ud-nyttelse af ved at fordele tilsætningen af dette mellem forskellige punkter, der blev holdt pâ en sâdan mâde, at sulfidindholdet af spildevandene ved tilforsel til de forskellige punkter for tilsætning af H2O2 var praktisk tait nul.Porsog, which has been carried out on wastewater plants in actual use, has shown that the best use was obtained by distributing the addition of this between different points held in such a way that the sulfide content of the wastewater is supplied to the wastewater. various points of addition of H2O2 were practically zero.
Tilsætningspunkterne for H2O2 ber fortrinsvis være pâ en sâdan mâde, at behandlingen pâbegyndes tidligst muligt i 3 forhold til stromnlngsretningen inden for systemet» og at det pâ den mest mulige homogène mâde dækker det samlede ledningsnet.The addition points for H2O2 should preferably be in such a way that the treatment is started at the earliest possible level in relation to the flow direction within the system »and that in the most homogeneous way it covers the entire wiring system.
De steder inden for ledningsnettet, hvor man lof ter spildevandet, er steder, soin er særügt egnede til inâ-spro^tning af H2O2» fordi driften af indsprojtnings-pumperne for sa kan synkroniseres med loftepum- perne, og fordi den omroring, som fremkaldes af lofte-pumperne, er tilstrækkelig stor til at sikre en god homogenisering af hlandingen. Man kan anvende aile van-dige oplosninger af til udforelse af fremgangsmâ- den ifolge opfindelsen, men det tilrâdes i sserlig grad at anvende oplosninger indeholdende 50% H2O2, hvilket forer til den laveste omkostning,The locations within the wiring system where the wastewater ceiling is located are particularly suitable for injecting H2O2 because the operation of the injection pumps can then be synchronized with the ceiling pumps and because the stirring induced of the ceiling pumps is sufficiently large to ensure a good homogenization of the landing. All aqueous solutions may be used to carry out the process according to the invention, but it is particularly advisable to use solutions containing 50% H2O2, which leads to the lowest cost.
Tilforslen af i spildevandsrorledningerne kan gen- nemfores ved et hvilket som helst kendt middel, idet an-vendelsen af doseringspumper særlig skal anbefales.The supply of in the sewage pipes can be carried out by any known means, the use of dosing pumps being particularly recommended.
De efterfolgende eksempler helyser de intéressante detaljer ved fremg„ngsmâden ifolge opfindelsen, Eksempel 1 er et sammenligningseksempel, hvor tilsætning af er blevet foretaget ved et enkelt punkt i ledningsnettet; eksempel 2 er et eksempel pâ en praktisk udforelse af fremgangsmâ.den ifolge opfindelsen til behandling af svovlholdigt spildevand med HgOg med tilforsel af hydrogenperoxid pâ forskellige punkter i ledningsnettet til tilforsel af spildevand, som er for-delt pâ regelmæssig mâde over hele ledningsnettets omrâde, Og som mân har gennemfort.The following examples highlight the interesting details of the process according to the invention. Example 1 is a comparative example in which addition has been made at a single point in the wiring grid; Example 2 is an example of a practical embodiment of the process according to the invention for treating sulfur-containing wastewater with HgO and with the supply of hydrogen peroxide at various points in the wastewater distribution network, which is distributed in a regular manner throughout the area of the wastewater network, and as man has accomplished.
EKSEMPEL 1EXAMPLE 1
Et spildevandsystem, som foder en biologisk rensningssta-tion, bestâr af tre stationer til oppumpning B, C, D, som hver modtager spildevand fra forskellige omràder i en by, idet spildevandet kommende fra disse tre stationer samles i en loftestation A ved h.iæln af rorforineeme: 4A wastewater system that feeds a biological purification station consists of three stations for pumping B, C, D, each receiving wastewater from different areas of a city, the wastewater coming from these three stations being collected in a loft station A at the helm of the helmets: 4
DK 157186 BDK 157186 B
- BA gravitation med længden 1650 m og med diameter 0,315 m - CA omfattende to dele: en trykledning af længden 665 m og med diameteren 0,25 m, og derpâ en gravitations-sektion af længden 905 m og med diameteren 0,25 m 5 - BA indeholdende to dele: en trykledning af længden 900 m og med diameteren 0,355 a» og derpâ en gravitations-sektion af længden 1690 m og med diameteren 0,355 m.- BA gravity with a length of 1650 m and a diameter of 0,315 m - CA comprising two parts: a pressure line of length 665 m with a diameter of 0,25 m, and a gravity section of length 905 m with a diameter of 0,25 m 5 - BA containing two parts: a pressure line of length 900 m and with a diameter of 0.355 a »and thereon a gravitational section of length 1690 m and of diameter 0.355 m.
Ben centrait anbragte station A er selv forbundet med rensningsanlægget ved fcgælp af en trykledning af længden 10 1S70 m og med diameteren 0,40 m. Anlægget modtager andre forsyninger af spildevand, men kontrollen udfort ved til-fsrsel er udelukkende udovet pâ vand stammende fra sta-tionen A« ïïnder forsogsperioden kom vandet fra station A med en 15 hastighed fra 3000 til 4000 m^/dag" og kendetegnene for spildevandet uden anvendelse af peraxid-behandling var som folger:Ben centrait located station A is itself connected to the purification plant by a pressure line of length 10 1S70 m and with a diameter of 0.40 m. The plant receives other supplies of wastewater, but the control carried out by supply is exclusively exercised on water originating from the During the experimental period, the water came from station A at a rate of 3000 to 4000 m 2 / day and the characteristics of the wastewater without the use of peraxide treatment were as follows:
- temperatur 19 til 22°C- temperature 19 to 22 ° C
--pH 7,4 til 8,4- pH 7.4 to 8.4
20 - redoxpotential - 60 til - 400 mV20 - redox potential - 60 to - 400 mV
- sulfidindhold ved tilforsel til loftestationen A: 0,52 mg/l i gennemsnit - sulfidindhold ved indgangen til behandlingsanlægget: 4,6 mg/l i gennemsnit 25 Mâlingeme af sulfidindholdet udfores potentiometrisk umiddelbart efter udtagning af preverne ved hjælp af en selektiv sulfid-elektrode.- sulphide content when delivered to the ceiling station A: 0.52 mg / l on average - sulphide content at the entrance to the treatment plant: 4.6 mg / l on average 25 The measurements of the sulphide content are carried out potentiometric immediately after sampling by means of a selective sulphide electrode.
Hydrogenperoxid-behandling med tilforsel af hydrogenperoxid i den centrait anbragte loftestation A foregik gennem 42 3o dage, idet man tilsatte 50% Η202 e^er I0£tepnmperne ved hjælp af doseringspumper. H202“pumperne var synfcroniseret med loftepumperne for spildevandet, som arbejdede i inter-mitterende drift.Hydrogen peroxide treatment with the supply of hydrogen peroxide in the centrally located ceiling station A took place for 423 days, adding 50% Η202 e ^ to the I10 pumps using metering pumps. The H202 pumps were synchronized with the sewage ceiling pumps, which operated in intermittent operation.
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Den intermitterende drift forte til en middelopholdstid pâ 100 minutter i udlcbsraret i den omhandlede période, Yandprover blev udtaget i bronden fer lcftepumperae og ved udstramningsniveauet fra udlcbsrorene ved ankomsten 5 til stationen.The intermittent operation led to an average residence time of 100 minutes in the discharge tube during the period in question. Yand samples were taken in the well before lift pump pump and at the level of discharge from the discharge tubes upon arrival at the station.
Driftsbetingelserne og de opnâede resultater under visse tidsforlob af dette forsog er samlet i efterfolgende tabel I. 'The operating conditions and the results obtained during certain time periods of this experiment are summarized in the following Table I. '
Efter to dages. drift uden tilsætning af HgOg» hvorved 10 man konstaterer et sulfidindhold ved indgangen til lof- testationen A varierende fra 0,32 til 0,61 mg/1, og ved indgangen til anlægget pâ 4,2 til 5,2 mg/1, tilsætter man den tredje dag ved A til en fomdgâende behandling 22,9 mg/1 50$ ïi^Og, d.v.s. ca, 2,5 gange den stokiometrisk 15 n0dvendige mængde til oxidationsomsætningen af sulfider til svovl. Indholdet af H2O2 sænkes den fjerde dag til 5,7 mg/1, og derpâ hæves det atter den syvende dag til ca. 8,8 mg/1 I^OgîAfter two days. operation without the addition of HgOg »whereby a sulfide content is found at the entrance to the ceiling test A varying from 0.32 to 0.61 mg / 1, and at the entrance to the plant of 4.2 to 5.2 mg / 1, add the third day at A for an ongoing treatment 22.9 mg / 1 50 $ ïi ^ And, that is, about 2.5 times the stoichiometric amount needed for the oxidation reaction of sulfides to sulfur. The content of H2O2 is lowered to 5.7 mg / l on the fourth day, and then raised to approx. 8.8 mg / l in Ogî
Eftersom sulfidindholdet ved tilforslen til behandlings-20 anlægget er uregelmæssigt og for hojt, ihæver man den niende dag indholdet af H^Og til ca. 19 mg/1, et indhold som op-retholdes indtil den attende dag.Since the sulfide content of the feed to the treatment plant is irregular and too high, the content of H 19 mg / l, a content maintained until the eighteenth day.
Under forsoget iagttager man et gennemsnitsforbrug af 50$ x H2O2 pâ 15,1 g pr, nr spildevand tilfert anlægget, idet 25 indholdet af sulfid ved indgangen til anlægget varierer i betydelig grad.During the experiment, an average consumption of 50 $ x H2O2 of 15.1 g per wastewater is observed at the plant, since the content of sulphide at the entrance to the plant varies considerably.
Forsoget blev fortsat i mere end en mâned med varierende indhold af H202, og man konstaterede den 42, driftsdag, at med et indhold af H202 pâ 36,1 mg/1 af 50$ HP0P blev 30 sulfidindholdet fort til mindre 0,1 mg/1, sâledes som det fremgâr af fortsættelsen af tabel I.The trial was continued for more than a month with varying levels of H 2 O 2, and it was found on the 42nd day of operation that with a H 2 O 2 content of 36.1 mg / 1 of 50 $ HPOP, the sulfide content was reduced to less than 0.1 mg / 1, as shown in the continuation of Table I.
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Dette indhold, der er tilfredsstillende med hensyn til sulfidindholdet ved indgangen til behandlingsanlægget, er opnâet under anvendelse af en E^C^-mængde svarende til 3,9 gange den stokiometriske mængde til oxidations-5 omsætningen, men derimod fjerner en sâdan fremgangsmâde pâ ingen mâde lugtene og korrosionen i rarledningeme, der befinder sig fer loftestationen A.This content, which is satisfactory with respect to the sulfide content at the entrance to the treatment plant, is obtained using an E ^C ^ amount corresponding to 3.9 times the stoichiometric amount for the oxidation reaction, but on the contrary removes such a method in no way. the odors and corrosion in the rarefied wires located at the ceiling station A.
EKSEMPEL 2EXAMPLE 2
Et spildevandsystem, bestâr som anfert i eksempel 1, 10 af et rorledningssystem, der grupperer sig omkring lef- testationerne B, G, D, som i sig selv samles til sta-tionen A» samt af et andet System, der er samlet omkring en station E. Rerledningerne stammende fra A og fra E samles ved indgangen til behandlingsanlægget.A wastewater system, as set forth in Examples 1, 10, consists of a pipeline system grouping around the lefts B, G, D, which itself is assembled to the station A »and another system assembled around a station E. The pipelines originating from A and from E are collected at the entrance to the treatment plant.
15 Kendetegnene for sektionerne BA, CA, DA samt for stationen A er de samme, sont anfert ved eksempel 1, og stationen E er pâ sin side forbundet med rersystemet kommende fra A lige fer tilferslen til anlægget gennem en trykledning af længden 850 m og med diameteren 0,25 m.The characteristics of sections BA, CA, DA as well as for station A are the same, clearly indicated in Example 1, and station E is in turn connected to the piping system coming from A just before the entry to the plant through a pressure line of length 850 m and with diameter 0.25 m.
20 Under forsegsperioden bestod spildevandet, der blev til- fert til anlægget, af en samlet mængde pâ 6700 til 7300 m^/dag, hvoraf 5500 til 6000 m^/dag stammede fra stationen A, og kendetallene for dette spildevand uden peroxid-behandling var som felgerîDuring the sealing period, the wastewater supplied to the plant consisted of a total volume of 6700 to 7300 m 2 / day, of which 5500 to 6000 m 2 / day came from station A, and the characteristics of this wastewater without peroxide treatment were as rimgerî
25 - temperatur 20,5°C til 23°C25 - temperature 20.5 ° C to 23 ° C
- pH 7,55 til 8,50pH 7.55 to 8.50
- redoxpotential - 260 til - 400 mV- redox potential - 260 to - 400 mV
- indholdet af sulfider ved tilferslen til station A 0,35 mg/l i gennemsnit 30 - indholdet af sulfider ved ind- gangen til stationerne B, C, D, E mindre end 0,05 mg/l - indholdet af sulfider ved indgangen til anlægget 3,43 mg/l i gennemsnit 7- the content of sulphides at the entrance to station A 0.35 mg / l on average 30 - the content of sulphides at the entrance to stations B, C, D, E less than 0.05 mg / l - the content of sulphides at the entrance to the plant 3.43 mg / l average 7
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Sulfidanalyserne udfores potentiometrisk umiddelbart efter udtagning af prever og ved hjælp af en selek-tiv suifid-elektrode.The sulfide assays are performed potentiometric immediately after sampling and by a selective sufide electrode.
Et forseg med behandling af E^02 med samtidig tilsæt-5 ning af peroxid i de fern stationer til leftning A, B, C, D, E blev udfdrt gennem 9 dage, idet man tilsatte 50% H202 efter loftepumperne ved hjælp af doserings-pumper. H202-pumperne blev synkroniseret med leftepum-perne for spildevand, som arbejdede med intermitterende 10 drift.A trial of treating E ^ O2 with the simultaneous addition of peroxide in the left-to-left A, B, C, D, E stations was carried out for 9 days, adding 50% H2 O2 to the ceiling pumps by dosing. pumps. The H 2 O 2 pumps were synchronized with the wastewater pumps, which operated with intermittent operation.
Driftsbetingelserne og de opnâede resultater er samlede i efterfelgende tabel II.The operating conditions and the results obtained are summarized in the following Table II.
H202 blev til at begynde med tilsat i stationen A og derpâ efterhânden i de andre stationer, idet indholdet 15 af sulfider ved indgangen til stationen A oprindelig var 0,35 mg/1 og derpâ blev mindre end 0,05 mg/1 i lebet af to dage, og parallelt hermed blev indholdet af sulfider ved indgangen af behandlingsanlægget, son i middel var 3»4 mg/1 umiddelbart fer igangsætningen af indspr0jtningen af 20 -¾¾51 mindre end 0,05 mg/1, nâr indsprojtning af H202 blev foretaget i de fem stationer A, B, C, D og E.H 2 O 2 was initially added at station A and subsequently at the other stations, the content of sulphides at the entrance of station A initially being 0.35 mg / l and thereafter less than 0.05 mg / l at two days, and, in parallel, the content of sulphides at the entrance of the treatment plant, the mean in the medium was 3 »4 mg / l immediately before the start of the injection of 20-51 less than 0.05 mg / 1 when injection of H2 O2 was made. the five stations A, B, C, D and E.
Man bemærker, at anvendelsen af fremgangsmâden ifolge den foreliggende opfindelse ferer til indhold af sulfider, der praktisk tait er nul, som er mindre end grænsen for 25 den analytiske bestemmelse, 0,05 mg/1, inden for hele netværkets omrâde. Denne behandling medforer sâledes den fuldstændige forsvinden af lugtene, og den eliminerer en-hver korrosion inden for de samlede omrâder.It should be noted that the use of the process of the present invention results in content of sulphides which are practically zero, which is less than the limit of the analytical determination, 0.05 mg / l, within the entire range of the network. This treatment thus causes the complete disappearance of the odors and eliminates any corrosion within the overall areas.
Under dette forseg var det gennemsnitlige forbrug af 50% 30 H2Q2 pâ 36,5 g 50% H202 pr. m^ vand malt ved indgangen til behandlingsanlægget, og dette tillod at bringe indholdet af sulfider ved indgangen til dette samme behandlingsanlæg fra 3,4 mg/1 til mindre end 0,05 mg/1.During this test, the average consumption of 50% H 2 O 2 on 36.5 g of 50% H m ^ water ground at the entrance to the treatment plant, and this allowed the content of sulfides at the entrance to this same treatment plant to be reduced from 3.4 mg / l to less than 0.05 mg / l.
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Eksempel 2: Tilsætning a£ H202 ved flere punkter i systemetExample 2: Addition of £ H2O2 at multiple points in the system
Dag Klok- statlon A_ Station ,_Anlæg_ nr. ke- Sulfidind- Behandlings- B C D_E . Sulfi.dindhold slet hold ved grad i mg7l Behandlingsgrad iDay Clock Statlon A_ Station, _ Plant_ No. ke- Sulfide Ind- Treatment- B C D_E. Sulfide content delete hold by degree in mg7l Treatment degree i
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Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7906448A FR2451346A1 (en) | 1979-03-14 | 1979-03-14 | TREATMENT OF SULPHIDIC SEWAGE WITH HYDROGEN PEROXIDE |
| FR7906448 | 1979-03-14 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK107680A DK107680A (en) | 1980-09-15 |
| DK157186B true DK157186B (en) | 1989-11-20 |
| DK157186C DK157186C (en) | 1990-04-23 |
Family
ID=9223096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK107680A DK157186C (en) | 1979-03-14 | 1980-03-13 | PROCEDURE FOR SULFURING OF WASTE WATER USING HYDROGEN PEROXIDE |
Country Status (14)
| Country | Link |
|---|---|
| JP (1) | JPS55124593A (en) |
| BE (1) | BE882099A (en) |
| CH (1) | CH640488A5 (en) |
| DE (1) | DE3009512A1 (en) |
| DK (1) | DK157186C (en) |
| ES (1) | ES489595A1 (en) |
| FR (1) | FR2451346A1 (en) |
| GB (1) | GB2044745B (en) |
| IE (1) | IE49424B1 (en) |
| IT (1) | IT1130297B (en) |
| LU (1) | LU82246A1 (en) |
| NL (1) | NL8001513A (en) |
| SE (1) | SE8001946L (en) |
| TR (1) | TR21084A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3811789A1 (en) * | 1988-04-08 | 1989-10-19 | Layer & Knoedler Abwassertechn | METHOD FOR REMOVING SULFIDES FROM SEWAGE |
| CN115124163A (en) * | 2022-06-30 | 2022-09-30 | 江苏恒富新材料科技有限公司 | A kind of wood pulp sponge mother liquor desulfurization purification process and treatment device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525685A (en) * | 1969-06-25 | 1970-08-25 | Richard N Edwards | Intermediate sewage treatment process and means |
| US3705098A (en) * | 1971-02-22 | 1972-12-05 | Fmc Corp | Sewage treatment with hydrogen peroxide |
| DE2604484A1 (en) * | 1975-02-05 | 1976-08-19 | Sumitomo Chemical Co | METHOD OF TREATMENT OF ORGANIC SULFUR COMPOUNDS CONTAINING STINKY WASTE |
| FR2378722A1 (en) * | 1977-01-31 | 1978-08-25 | Gen Electric | Removing dissolved organic impurities from waste water - by simultaneous adsorption on adsorbent and destructive oxidn. e.g. with ozone |
-
1979
- 1979-03-14 FR FR7906448A patent/FR2451346A1/en active Granted
-
1980
- 1980-02-26 GB GB8006453A patent/GB2044745B/en not_active Expired
- 1980-03-05 IT IT20364/80A patent/IT1130297B/en active
- 1980-03-06 BE BE0/199685A patent/BE882099A/en not_active IP Right Cessation
- 1980-03-12 SE SE8001946A patent/SE8001946L/en not_active Application Discontinuation
- 1980-03-12 DE DE19803009512 patent/DE3009512A1/en active Granted
- 1980-03-12 LU LU82246A patent/LU82246A1/en unknown
- 1980-03-13 CH CH199380A patent/CH640488A5/en not_active IP Right Cessation
- 1980-03-13 TR TR21084A patent/TR21084A/en unknown
- 1980-03-13 IE IE516/80A patent/IE49424B1/en not_active IP Right Cessation
- 1980-03-13 NL NL8001513A patent/NL8001513A/en not_active Application Discontinuation
- 1980-03-13 DK DK107680A patent/DK157186C/en active
- 1980-03-14 ES ES489595A patent/ES489595A1/en not_active Expired
- 1980-03-14 JP JP3173980A patent/JPS55124593A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL8001513A (en) | 1980-09-16 |
| JPS55124593A (en) | 1980-09-25 |
| FR2451346B1 (en) | 1983-06-03 |
| DE3009512C2 (en) | 1989-02-23 |
| FR2451346A1 (en) | 1980-10-10 |
| IE49424B1 (en) | 1985-10-02 |
| GB2044745A (en) | 1980-10-22 |
| DK157186C (en) | 1990-04-23 |
| GB2044745B (en) | 1982-11-10 |
| DK107680A (en) | 1980-09-15 |
| IT8020364A0 (en) | 1980-03-05 |
| DE3009512A1 (en) | 1980-09-25 |
| LU82246A1 (en) | 1981-10-30 |
| BE882099A (en) | 1980-09-08 |
| IE800516L (en) | 1980-09-14 |
| TR21084A (en) | 1983-06-29 |
| IT1130297B (en) | 1986-06-11 |
| SE8001946L (en) | 1980-09-15 |
| ES489595A1 (en) | 1980-09-16 |
| CH640488A5 (en) | 1984-01-13 |
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