SU1664757A1 - Method of biological denitrification of sewage - Google Patents
Method of biological denitrification of sewage Download PDFInfo
- Publication number
- SU1664757A1 SU1664757A1 SU884605727A SU4605727A SU1664757A1 SU 1664757 A1 SU1664757 A1 SU 1664757A1 SU 884605727 A SU884605727 A SU 884605727A SU 4605727 A SU4605727 A SU 4605727A SU 1664757 A1 SU1664757 A1 SU 1664757A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- wastewater
- sludge
- denitrification
- treatment
- organic substrate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000010865 sewage Substances 0.000 title description 2
- 239000010802 sludge Substances 0.000 claims abstract description 14
- 239000002351 wastewater Substances 0.000 claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 230000001651 autotrophic effect Effects 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000000855 fermentation Methods 0.000 claims description 7
- 230000004151 fermentation Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 6
- 239000008213 purified water Substances 0.000 claims description 5
- 150000002823 nitrates Chemical class 0.000 claims description 4
- 150000002826 nitrites Chemical class 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 2
- 150000003464 sulfur compounds Chemical class 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 241001517019 Philomachus Species 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 229910017464 nitrogen compound Inorganic materials 0.000 abstract description 2
- 150000002830 nitrogen compounds Chemical class 0.000 abstract description 2
- 239000011593 sulfur Substances 0.000 abstract description 2
- 229910052717 sulfur Inorganic materials 0.000 abstract description 2
- 229910002651 NO3 Inorganic materials 0.000 abstract 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical class [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 2
- 235000019345 sodium thiosulphate Nutrition 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 241001517013 Calidris pugnax Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical class [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical class [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical class [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- ZODDGFAZWTZOSI-UHFFFAOYSA-N nitric acid;sulfuric acid Chemical compound O[N+]([O-])=O.OS(O)(=O)=O ZODDGFAZWTZOSI-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011701 zinc Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- Y02W10/12—
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Изобретение относитс к обработке сточных вод, может быть использовано при биологической очистке промышленных потоков от соединений серы и азота и позвол ет снизить расход органического субстрата. Обработку сточных вод осуществл ют в денитрификаторе автотрофным и гетеротрофным илом, закрепленным на загрузке из смесей. Рециркулируемые сточные воды, содержащие не более 50 мг/л азота нитратов и нитритов и избыточный денитрифицирующий ил, подвергают сбраживанию сульфатредуцирующим илом, также закрепленным на ершах, и смешивают с исходным потоком перед подачей в денитрификатор. Применение способа позвол ет сократить необходимое количество органического субстрата в 1,25 - 1,6 раза и стабилизировать PH обрабатываемых сточных вод. 2 з.п.ф-лы, 1 табл.The invention relates to the treatment of wastewater, can be used in the biological treatment of industrial streams from sulfur and nitrogen compounds and reduces the consumption of organic substrate. Wastewater treatment is carried out in a denitrifier by autotrophic and heterotrophic sludge, which is attached to the feed from mixtures. Recycled wastewater containing no more than 50 mg / l of nitrate and nitrite nitrogen and excess denitrifying sludge is fermented with sulphate-reducing sludge, also attached to the ruffs, and mixed with the feed stream before it is fed into the denitrifier. The application of the method allows to reduce the required amount of organic substrate by 1.25 - 1.6 times and stabilize the PH of the treated wastewater. 2 hp ff, 1 tab.
Description
Изобретение относитс к обработке сточных вод и может быть использовано при биологической очистке промышленных потоков от соединений серы и азота.The invention relates to the treatment of wastewater and can be used in the biological treatment of industrial streams from sulfur and nitrogen compounds.
Целью изобретени вл етс снижение расхода органического субстрата при обеспечении аналогичной степени очистки.The aim of the invention is to reduce the consumption of an organic substrate while ensuring a similar degree of purification.
Дл осуществлени способа нитрат- и сульфатсодержащие сточные воды обрабатывают в реакторе-денитрификаторе автотрофнымигетеротрофным денитрифицирующим илом, закрепленным на загрузке из ершей. В схеме очистки предусматривают рециркул цию в денитрифи- катор очищенной воды в количестве 10-80% от исходного потока. Рециркул ционную воду и избыточный денитрифицирующий ил перед смешением с исходным потоком и органическим субстратом обрабатывают за,- крепленным на ершах сульфатредуцирующим илом в сульфатредукторе. Газы брожени со стадии сульфатредукции направл ют в денитрификатор.In order to carry out the process, nitrate- and sulphate-containing wastewater is treated in a denitrifying reactor with autotrophic heterotrophic denitrification sludge fixed on a ruff load. The purification scheme provides for the recirculation of purified water to the denitrifier of 10-80% of the initial stream. Recycling water and excess denitrifying sludge are mixed with sulphate-reducing sludge in a sulphate-reducer attached to the initial stream and the organic substrate before mixing with the initial stream and organic substrate. The fermentation gases from the sulfate reduction stage are sent to the denitrifier.
Добавл емое органическое вещество вл етс субстратом дл гетеротрофного денитрифицирующего ила, а восстановленные соединени серы, поступающие с рециркул ционным потоком - энергетическим субстратом, - дл автотрофных денитрифицирующих бактерий. Углекислый газ, необходимый дл роста автотрофного ила, образуетс при гетеротрофной денитрифи- кации и поступает также со стадии сульфат- редукции с рециркул ционным потоком и при растворении газов брожени . С газами брожени поступает и сероводород -донор электронов дл автотрофных денитрифицирующих бактерий. Дл предотвращени ин- гибировани процесса сульфатредукцииThe added organic matter is the substrate for heterotrophic denitrifying sludge, and the recovered sulfur compounds coming from the recycle stream, the energy substrate, for autotrophic denitrifying bacteria. The carbon dioxide necessary for the growth of autotrophic sludge is formed by heterotrophic denitrification and also comes from the sulfate reduction stage with a recycle stream and by dissolving the fermentation gases. Hydrogen sulfide, an electron donor for autotrophic denitrifying bacteria, is also supplied with fermentation gases. To prevent the inhibition of sulfate reduction process
ON О VJON About VJ
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VIVI
содержание нитратов и нитритов в очищенной воде не должно превышать 50 мг/л.the content of nitrates and nitrites in purified water should not exceed 50 mg / l.
Процесс автотрофной денитрификации сопровождаетс подкислением обрабатываемой воды, а гетеротрофной - подшелачи- ванием. Совместное осуществление этих процессов способствует стабилизации величины рН.The process of autotrophic denitrification is accompanied by acidification of the treated water, and heterotrophic - by acrylogging. The joint implementation of these processes contributes to the stabilization of pH.
Эффективность способа оценивают на модел х денитрификатора и сульфатредук- тора с имитатом сточной воды, содержащей, г/л: нитрат натри 1,4; сульфат кали 2,4; ацетат натри 1,3; тиосульфат натри (в отмеченных случа х) 0,6; однозамещенный фосфат кали 0,2; хлорид аммони 0,2; хлорид кальци 0,05; сульфат магни 0,1; хлорид железа 0,03. Микроэлементы (соли молибдена, меди, никел , цинка) - по 0,01 мг/л каждой. Растворы готов т на отстоен- ной водопроводной воде, рН стока 6,4.The effectiveness of the method is evaluated on models of a denitrifier and a sulfate reducing agent with a waste water simulator containing, g / l: sodium nitrate 1.4; potassium sulfate 2.4; sodium acetate 1,3; sodium thiosulfate (in the cases noted) 0.6; potassium phosphate monobasis 0.2; ammonium chloride 0,2; calcium chloride 0.05; magnesium sulfate 0.1; ferric chloride 0.03. Trace elements (salts of molybdenum, copper, nickel, zinc) - 0.01 mg / l each. Solutions are prepared on standing tap water, the pH of the runoff is 6.4.
П р и м е р 1. Сточную воду, содержащую 1,4 г/л нитрата натри , 0,6 г/л тиосульфата натри и 2 г/л органического субстрата (ацетат натри ), смешивают с рециркул ционным потоком, предварительно обработанным совместно с избыточным денитрифицирующим илом в сульфат редукторе , и подают в денитрификатор, где подвергают биохимической денитрификации автотрофным и гетеротрофным илом, закрепленным на загрузке из ершей.EXAMPLE 1 Sewage water containing 1.4 g / l sodium nitrate, 0.6 g / l sodium thiosulfate, and 2 g / l organic substrate (sodium acetate) is mixed with a recycle stream that has been pretreated together. with excess denitrifying sludge into a sulfate reducer, and fed into the denitrifier, where it is subjected to biochemical denitrification by autotrophic and heterotrophic sludge attached to a load of ruffs.
Расход рециркул ционной воды составл ет 40% от исходного потока. Остаточное содержание азота нитратов и нитритов в очищенной воде 39 мг/л. рН 6,4.The recycle water consumption is 40% of the feed stream. The residual nitrogen content of nitrates and nitrites in purified water is 39 mg / l. pH 6.4.
П р и м е р 2. Способ осуществл ют аналогично примеру 1 и дополнительно ввод т в денитрификатор газы брожени со стадии сульфатредукции. ОстаточноеEXAMPLE 2 The method is carried out analogously to example 1 and the gases of fermentation from the stage of sulfate reduction are additionally introduced into the denitrifier. Residual
содержание азота нитратов и нитритов в очищенной воде 38 мг/л, рН 6,4.the nitrogen content of nitrates and nitrites in purified water is 38 mg / l, pH 6.4.
В таблице приведены результаты обработки модельных сточных вод предлагае- мым и известным способами.The table shows the results of treatment of model wastewater by the proposed and known methods.
Применение способа позвол ет сократить необходимое количество добавл емого органического субстрата в 1,25-1,6 раза и стабилизировать значение рН обрабатываемых сточных вод. The application of the method allows to reduce the required amount of the added organic substrate by 1.25-1.6 times and stabilize the pH value of the treated wastewater.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884605727A SU1664757A1 (en) | 1988-11-15 | 1988-11-15 | Method of biological denitrification of sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU884605727A SU1664757A1 (en) | 1988-11-15 | 1988-11-15 | Method of biological denitrification of sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1664757A1 true SU1664757A1 (en) | 1991-07-23 |
Family
ID=21409539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU884605727A SU1664757A1 (en) | 1988-11-15 | 1988-11-15 | Method of biological denitrification of sewage |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1664757A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455722A (en) * | 2022-02-11 | 2022-05-10 | 杭州绿色环保技术开发有限公司 | Full-flow biochemical treatment and reclaimed water recycling process for ink-jet printing wastewater |
-
1988
- 1988-11-15 SU SU884605727A patent/SU1664757A1/en active
Non-Patent Citations (1)
| Title |
|---|
| G. Claus, Kutzner H.J. Autotrophlc denitrification by Thiobacillus denitriflcans In a packed bed reactor. - Applied and Microbiology Biotechnology, 1985. v. 22. № 4. 284-296. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114455722A (en) * | 2022-02-11 | 2022-05-10 | 杭州绿色环保技术开发有限公司 | Full-flow biochemical treatment and reclaimed water recycling process for ink-jet printing wastewater |
| CN114455722B (en) * | 2022-02-11 | 2023-03-21 | 杭州绿色环保技术开发有限公司 | Full-flow biochemical treatment and reclaimed water recycling process for ink-jet printing wastewater |
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