DD157965A3 - PROCESS FOR ENZYMATIC SLUDGE STABILIZATION - Google Patents
PROCESS FOR ENZYMATIC SLUDGE STABILIZATION Download PDFInfo
- Publication number
- DD157965A3 DD157965A3 DD21832780A DD21832780A DD157965A3 DD 157965 A3 DD157965 A3 DD 157965A3 DD 21832780 A DD21832780 A DD 21832780A DD 21832780 A DD21832780 A DD 21832780A DD 157965 A3 DD157965 A3 DD 157965A3
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- sludge
- enzyme
- enzymatic
- stabilization
- amount
- Prior art date
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000006641 stabilisation Effects 0.000 title claims abstract description 12
- 238000011105 stabilization Methods 0.000 title claims abstract description 12
- 230000002255 enzymatic effect Effects 0.000 title abstract description 10
- 102000004190 Enzymes Human genes 0.000 claims abstract description 18
- 108090000790 Enzymes Proteins 0.000 claims abstract description 18
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 244000063299 Bacillus subtilis Species 0.000 claims abstract description 5
- 235000014469 Bacillus subtilis Nutrition 0.000 claims abstract description 5
- 239000000758 substrate Substances 0.000 claims abstract description 3
- 108091005804 Peptidases Proteins 0.000 claims description 4
- 239000004365 Protease Substances 0.000 claims description 4
- 102000035195 Peptidases Human genes 0.000 claims description 3
- 238000011534 incubation Methods 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 2
- -1 disodium dihydrogenated ethylenediaminetetraacetate Chemical class 0.000 claims 1
- 230000009466 transformation Effects 0.000 abstract 1
- 229940088598 enzyme Drugs 0.000 description 12
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- 108090000787 Subtilisin Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001461 cytolytic effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 229940079919 digestives enzyme preparation Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000219 ethylidene group Chemical group [H]C(=[*])C([H])([H])[H] 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003262 industrial enzyme Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000135 prohibitive effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000009423 ventilation Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (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 Sludge (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Enzymes And Modification Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Paper (AREA)
Abstract
Die Erfindung bezieht sich auf ein Verfahren zur enzymatischen Stabilisierung organischer Schlaemme. Ziel der Erfindung ist es, die Leistungsfaehigkeit der Schlammbehandlungsanlagen bei gleichzeitiger Reduzierung der eingesetzten Enzymmenge wesentlich zu erhoehen. Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Transformation organischer Schlaemme in eine stabilisierte Form zu entwickeln. Erfindungsgemaess werden bei der enzymatischen Schlammstabilisierung unter Verwendung eines natuerlichen, im vorliegenden Falle aus Bacillus subtilis gewonnenen Enzymgemisches, das in Mengen von etwa 3-10mg/l dem Substrat zugesetzt wird, dem Gemisch Komplexone in Mengen von 35-70% der Enzymmenge zugegeben.The invention relates to a method for the enzymatic stabilization of organic Schlaemme. The aim of the invention is to substantially increase the efficiency of the sludge treatment plants while reducing the amount of enzyme used. The invention has for its object to develop a process for the transformation of organic Schlaemme in a stabilized form. According to the invention, enzymatic sludge stabilization using a natural enzyme mixture obtained in the present case from Bacillus subtilis, which is added in amounts of about 3-10 mg / l to the substrate, adds complexones to the mixture in quantities of 35-70% of the enzyme amount.
Description
Verfahren zur enzymatischen SchlammstabilisierungMethod for enzymatic sludge stabilization
Anwendungsgebiet der Erfindung · Die Erfindun'g bezieht sich auf ein Verfahren zur enzymatischem, äclil ammstabil is ierung.FIELD OF THE INVENTION The invention relates to a process for the enzymatic, cyclic stabilization.
Charakteristik der bekannten technischen LösungenCharacteristic of the known technical solutions
Zur Behandlung organischer Schlämme sind aerobe und anaerobe Verfahren bekannt» Bei den aeroben'Verfahren wird das zu behandelnde Material belüftet, um die nur bei Anwesenheit von Sauerstoff ablaufenden mikrobiellen Abbauprozesse zu gewähr 1 eisten»For the treatment of organic sludges, aerobic and anaerobic processes are known »In the aerobic process, the material to be treated is aerated in order to ensure the microbial degradation processes occurring only in the presence of oxygen.
Die Verweilzeit des abzubauenden Materials beträgt 2,5 bis 7 Tage»The residence time of the material to be mined is 2.5 to 7 days »
33ie anaeroben Verfahren (Faulung) verlaufen in wesentlich längeren Zeiträumen· Sie gehen unter Ausschluß von Sauerstoff vonstatten. Die Verweilzeit beträgt 30 - 70 Tage. Weiterhin ist .ein enz.ymatisch.es Verfahren zur Schlammstabilisierung vorgeschlagen worden (DD-WP 140 244)« Die Schlammstabilisierung erfolgt bei Temperaturen von 25 bis 4O0C5 bei einem pK-Wert von 6 bis' 9 und ei.ner .Behandlungsdauer von 5-10 Ii· Die Abbauprozesse werden durch Enzyme katalysiert und somit stark-beschleunigt. Die Verweildauer .reduziert sich bei gleicher Abbauieistung auf wenige Stunden. l\iun ist es bereits bekannt, schwermetallempfindliche Enzyme bereite bei ihrer Freisetzung aus Mikroorganismen durch Zugabe von Komplexonen zu schützen (Ruttloff et.al.', Industrielle Enzyme, Leipzig 1978, 3. 184)»The anaerobic processes (digestion) take place in much longer periods of time. They proceed in the absence of oxygen. The residence time is 30 - 70 days. Furthermore, an enz.ymatisch.es method for sludge stabilization has been proposed (DD-WP 140 244) "The sludge stabilization is carried out at temperatures of 25 to 4O 0 C 5 at a pK value of 6 to '9 and egg.ner. Treatment time 5-10 Ii · The degradation processes are catalyzed by enzymes and thus strongly-accelerated. The dwell time is reduced to a few hours at the same rate. In addition, it is already known to prepare heavy-metal-sensitive enzymes in their release from microorganisms by addition of complexones (Ruttloff et al., Industrial Enzymes, Leipzig 1978, 3. 184).
Von den_ durch Bac. subtilis produzierten Enzymen sind die Proteasen schwermetallerapf indlich (Kalunjanz, K.A'. , Abhandlung der ADYi der DDR. (1975) 1I5S. 187). Ein Schutz der Metallproteasen durch Komplexon verbietet sich jedoch bereits- deshalb, weil Komplexon seinerseits die enzymatisch^ Aktivität dieser Enzyme hemmt (Ruttloff et. al/, a.a.O. S. 315·). Ein Schutz der außerdem produzierten Serinprotease Subtilisin (Priest, P.G4, Bacteriol.Rev. 41 (1977) ,S. 711) erübrigt sich bereits deswegen, weil diese Protease bei den bei der en- . ' zymatischen Schlammstabilisierung gegebenen pH-Werten nicht wirksam wird. (Ruttloff et.al., a.a.O. Seite 3135 Tab. 5.9a). Im übrigen könnte Komplexon einen entsprechenden Schwermetallschutz schon deswegen nicht übernehmen, weil das in kommunalen Klärschlämmen vorhandene Eisen (Pöpel,F; Thorn,W. Gewässerschutz - V/asser - Abwasser 6 (1972) S. 179 - 193) zugegebenes Komplexon aufgrund seiner größeren Affinität binden würde. (Horst,K. Aquarien - Terrarien 1-5. (1968) 9, S. 309).From the_ through Bac. subtilis-produced enzymes are the proteases schwermetallerapf indlich (Kalunjanz, K.A '., treatise of ADYi of the GDR. (1975) 1I 5 p. 187). However, protection of the metal proteases by complexone is already prohibitive because complexone in turn inhibits the enzymatic activity of these enzymes (Ruttloff et al., Supra, p. A protection of the also produced serine protease subtilisin (Priest, PG 4 , Bacteriol.Rev 41 (1977), p 711) is unnecessary because this protease in the en-. zymatic sludge stabilization given pH levels will not be effective. (Ruttloff et al., Op. Cit. Page 313 5 Tab. 5.9a). Incidentally, Komplexon could not assume the corresponding protection of heavy metals because the iron present in municipal sewage sludge (Pöpel, F; Thorn, W. Wasserschutz - V / asser - Abwasser 6 (1972) pp. 179-193) added complexone due to its larger Affinity would bind. (Horst, K. Aquariums - Terrarium 1-5 (1968) 9, p 309).
Ziel der ErfindungObject of the invention
Das Ziel der Erfindung besteht darin, den erhöhten Anfall an Klärschlämmen und V/asserwerksschlämmen durch ein Verfahren zu bewältigen, das sich gegenüber den traditionellen Verfahren durch eine v/esentlich erhöhte Leistungsfähigkeit und gegenüber dem vorgeschlagenen enzymatischen Verfahren durch einen stark verringerten Enzymverbrauch auszeichnet.The object of the invention is to cope with the increased incidence of sewage sludge and water sludge by a process that is characterized by an actually increased efficiency compared to the traditional processes and by a greatly reduced enzyme consumption compared to the proposed enzymatic process.
Darlegung des Wesens der ErfindungExplanation of the essence of the invention
Der Erfindung liegt die Aufgabe zu Grunde, ein Verfahren zur enzymatischen Schlammstabilisierung unter Verwendung eines aus Bacillus subtilis gewonnenen Enzymgemisch'es bei stark verringertem Enzymeinsatz zu entwickeln. Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß bei der enzymatischen Schlammstabilisierung unter Verwendung eines aus Bacillus subti lis gewonnenen cytolytischen Enzymgemisches, das in Mengen von etwa 3-10 mg/1 dem Substrat zugesetzt wird, wobei die Inkubation bei Temperaturen von 10 - 50'' C, einem pH-Wert von etwa 5-8 und einer Dauer von' etwa 0,5 bis 15 h erfolgt und anschließend in Schlamm und eine flüssige Phase getrennt wird, dem Gemisch Komplexone in einer: Menge von etwa 35 - 70 % der Enzymmenge zugesetzt werden.The invention is based on the object to develop a method for enzymatic sludge stabilization using an enzyme mixture obtained from Bacillus subtilis with greatly reduced enzyme use. According to the invention the object is achieved in that in the enzymatic sludge stabilization using a cytolytic enzyme mixture obtained from Bacillus subtilis added in amounts of about 3-10 mg / 1 to the substrate, wherein the incubation at temperatures of 10 - 50 '' C is a pH of about 5-8 and a duration of 'about 0.5 to 15 hours and then separated into sludge and a liquid phase, the mixture Komplexone in a: amount of about 35 to 70 % of the amount of enzyme be added.
· . ' o/, .mti 4ü>3 0#ii-a « ·. 'o /, .mti 4ü> 3 0 # ii-a «
- 3 -· 2 1 8 Vorzugsweise wird als Komplexem Diriatriumdiliydrogen-äthylen». diamintetraacetat eingesetzt.- 3 - · 2 1 8 Preferably, as a complex, diisobutyric acid ethylidene ". used diamintetraacetat.
Es' wäre au erwarten gewesen, daß durch die Zugabe von Komplexon'en der Enzymverbrauch ansteigen würde., Überraschend konnte aber durch eine geringe Zugabe von Komplexonen eine Verminderung der Zugabemenge an Enzymen erreicht werden«, Es liegt also ein neuer überraschender Effekt voro Enzympräparate und Kornplexone werden vorzugsweise für Mischschlämme, bestehend aus Vorbeckenschiamm und Belebtschlamm verwendet. Die eingesetzten Enzymmengen reduzieren sich um etwa 30% gegenüber dem vorbeschriebenen Verfahren der enzymatischen Schlammstabilisierung ohne Komplexon.It would have been expected that by the addition of Komplexon'en the enzyme consumption would increase., Surprisingly, however, could be achieved by a small addition of complexones, a reduction in the amount of enzymes added, "So there is a new surprising effect before o enzyme preparations and Kornplexone are preferably used for mixed sludge, consisting of Vorbeckenschiamm and activated sludge. The amounts of enzyme used are reduced by about 30% compared to the above-described method of enzymatic sludge stabilization without Komplexon.
Ausführungsbeispiel *Exemplary embodiment
Von Sperrgut_befreiter Vorbeckenschlamm wird mit Überschußschi amm aus der biologischen Stufe im Verhältnis 1:5 gemischtFrom Sperrgut_befreiter Vorbeckenschlamm is mixed with excess Schi amm from the biological stage in the ratio 1: 5
und pro m/ mit 3 - 10 g eines Bacillus Subtilis Präparates und 1 bis 10 g eines vorgelösten Komplexons (Dinatriumdihydrogenäthylendiamintetraacetat) versetzt,' Der Mischschlamm wird nun 5 Stunden bei 2rj°C gerührt und schwach belüftet. Nach der Inkubation wird der enzymatisch stabilisierte Schlamm durch Schwerkrafteindickung vom nährstoffhalt igen Schlammwasser getrennt und auf die Schiammtrockenplätze gebracht«. Das Schlammwasser wird einer speziellen Verwendung oder einem Belebungsb e c k e η züge f LIh r t.and per m / a 3 - 10 g of a Bacillus subtilis preparation and 1 to 10 g of a predissolved complexone (Dinatriumdihydrogenäthylendiamintetraacetat) was added, 'The mixed sludge is then stirred for 5 hours at 2 r j ° C and weak ventilation. After incubation, the enzymatically stabilized sludge is separated from the nutrient-containing sludge by gravity thickening and transported to the sludge drying places. " The sludge water is used for a special purpose or aeration purposes.
Claims (1)
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD21832780A DD157965A3 (en) | 1980-01-07 | 1980-01-07 | PROCESS FOR ENZYMATIC SLUDGE STABILIZATION |
| BG8049938A BG34816A1 (en) | 1980-01-07 | 1980-12-01 | Method for fermentation stabilizing of slime |
| DE19803045712 DE3045712A1 (en) | 1980-01-07 | 1980-12-04 | Enzymatic sludge and liq. manure decomposition - using complexing cpd. together with Bacillus subtilis-derived enzyme compsn. contg. protease, amylase and glucanase |
| AT592480A AT388908B (en) | 1980-01-07 | 1980-12-04 | METHOD FOR ENZYMATIC SLUDGE STABILIZATION |
| CS876980A CS258401B1 (en) | 1980-01-07 | 1980-12-11 | Method of sludge's fermentative stabilization |
| SU807771535A SU1227604A1 (en) | 1980-01-07 | 1980-12-17 | Method of ferment stabilization of organic deposit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD21832780A DD157965A3 (en) | 1980-01-07 | 1980-01-07 | PROCESS FOR ENZYMATIC SLUDGE STABILIZATION |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD157965A3 true DD157965A3 (en) | 1982-12-22 |
Family
ID=5522154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD21832780A DD157965A3 (en) | 1980-01-07 | 1980-01-07 | PROCESS FOR ENZYMATIC SLUDGE STABILIZATION |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT388908B (en) |
| BG (1) | BG34816A1 (en) |
| CS (1) | CS258401B1 (en) |
| DD (1) | DD157965A3 (en) |
| DE (1) | DE3045712A1 (en) |
| SU (1) | SU1227604A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3441690A1 (en) * | 1984-11-15 | 1986-05-15 | VEB Projektierung Wasserwirtschaft, DDR-4020 Halle | Process for the enzymatic treatment of organic substances and biomass |
| DE3443364A1 (en) * | 1984-11-28 | 1986-05-28 | FALI Landwirtschaftliche Service GmbH, 7867 Wehr | SOURCE TREATMENT AGENTS FOR PREVENTING FLOATING CEILINGS AND SINK LAYERS AND THE USE THEREOF |
| DE3545321C2 (en) * | 1985-12-20 | 1995-07-20 | Gfs Ges Fuer Flugaschenverwert | Process for the treatment of sludges containing heavy metals |
| CS275735B6 (en) * | 1988-09-14 | 1992-03-18 | Projekt Wasserwirtschaft Veb | Method of mesophilic or thermophilic anaerobic enzymatic conditioning of liquid organic substances and biological materials |
| DE10249081A1 (en) * | 2002-10-21 | 2004-04-29 | Volker Lenski | Simplified sewage sludge treatment comprises an enzyme treatment step, and optionally a peroxide treatment step at an acidic pH |
| SE531167C2 (en) * | 2007-05-31 | 2009-01-07 | Kemira Oyj | Process for treating sludge in water treatment |
| CN108585438A (en) * | 2018-04-17 | 2018-09-28 | 沈阳环境科学研究院 | A kind of preparation method of sludge drying co-substrate fermentate |
-
1980
- 1980-01-07 DD DD21832780A patent/DD157965A3/en not_active IP Right Cessation
- 1980-12-01 BG BG8049938A patent/BG34816A1/en unknown
- 1980-12-04 AT AT592480A patent/AT388908B/en not_active IP Right Cessation
- 1980-12-04 DE DE19803045712 patent/DE3045712A1/en active Granted
- 1980-12-11 CS CS876980A patent/CS258401B1/en unknown
- 1980-12-17 SU SU807771535A patent/SU1227604A1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| CS258401B1 (en) | 1988-08-16 |
| DE3045712C2 (en) | 1989-04-20 |
| ATA592480A (en) | 1989-02-15 |
| DE3045712A1 (en) | 1981-10-22 |
| AT388908B (en) | 1989-09-25 |
| BG34816A1 (en) | 1983-12-15 |
| SU1227604A1 (en) | 1986-04-30 |
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| ENJ | Ceased due to non-payment of renewal fee |