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WO1995003142A1 - Sanitation process for industrial sedimentation plants - Google Patents

Sanitation process for industrial sedimentation plants Download PDF

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Publication number
WO1995003142A1
WO1995003142A1 PCT/EP1994/002382 EP9402382W WO9503142A1 WO 1995003142 A1 WO1995003142 A1 WO 1995003142A1 EP 9402382 W EP9402382 W EP 9402382W WO 9503142 A1 WO9503142 A1 WO 9503142A1
Authority
WO
WIPO (PCT)
Prior art keywords
dams
industrial
sludge
pouring edge
dam
Prior art date
Application number
PCT/EP1994/002382
Other languages
German (de)
French (fr)
Inventor
Lutz-Heinrich Benner
Frank Otto
Original Assignee
DMT-Gesellschaft für Forschung und Prüfung mbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DMT-Gesellschaft für Forschung und Prüfung mbH filed Critical DMT-Gesellschaft für Forschung und Prüfung mbH
Priority to AU74593/94A priority Critical patent/AU7459394A/en
Publication of WO1995003142A1 publication Critical patent/WO1995003142A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C41/00—Methods of underground or surface mining; Layouts therefor
    • E21C41/32—Reclamation of surface-mined areas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B1/00—Dumping solid waste
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil

Definitions

  • the invention relates to a method for the refurbishment of industrial settling plants according to the preamble of claim 1.
  • the invention has for its object to renovate industrial settling plants with relatively little effort.
  • dams are formed in the industrial settling plant, the dams being driven from the bank towards the pond or the next transverse dam.
  • An earth building material e.g. B. Haldenmateri ⁇ al, transported to the end of the stabilized area with trucks.
  • a wide-chain caterpillar moor caterpillar
  • the dumped material is on a front of z. B. 30 m wide in the direction of the longitudinal axis of the dam.
  • the material is advanced in such a way that the caterpillar is always at a level which is clearly above the level of the tailing sediment.
  • the heap material is poured over the pouring edge in the direction of the "middle of the pond" or to the next transverse dam.
  • the flooded areas can only be entered with moor caterpillars at the beginning. Only when the main setting has subsided (after approx. 2 - 3 days) this route can be traveled by truck.
  • the height of the pouring edge depends on the consistency of the sludge. As a rule, you can work with a pouring edge of approx. 3 to 6 m in height.
  • the industrial settling plant is issued into individual segments with the aid of the bulk dams thus formed, which run in the longitudinal and transverse directions. After formation of these bulk dams, the individual segments are also gradually covered in the manner described above.
  • a significantly lower pouring edge can be provided for the covering in the area of the segments between the pouring dams.
  • the flooded subfields are also only to be driven on with moor caterpillars for the time being.
  • the industrial settling plants are dewatered by consolidating the sludge.
  • vacuum wells can be brought into the dams after the dump dams have been created. It has been shown that with very early and intensive use of vacuum wells, the sediment can quickly drain in the subfields, so that the subfields can be stabilized and overburdened at short notice.
  • Figure 1 shows the principle of the formation of the bulk dams.
  • FIG. 3 shows a cross section through a settling plant with a bulk dam
  • Fig. 4 shows the formation of a bulk dam with large sediment thicknesses
  • Fig. 5 shows the drainage using vacuum wells.
  • a longitudinal dam 2, a longitudinal dam 3 and a transverse dam 4 are arranged in an industrial settling plant 1.
  • the dams 2, 3 and 4 will be formed with earth building materials, which are delivered in trucks 5 and 6 in tipping areas.
  • the material is pushed into the industrial settling plant 1 with a wide-chain caterpillar.
  • the crawling directions of the caterpillar are represented by arrows in the individual dams 2, 3 and 4.
  • the dams 2, 3 and 4 can be driven on by trucks and the material can be dumped on the bulk dam.
  • the tilting areas 7 on embankment 2 and 8 on embankment 3 are shown by way of example.
  • a segment 9 is formed by the dams 2, 3 and 4.
  • segment 9 The overburdening of a segment 9 is shown schematically in FIG.
  • the reference numerals have the same meaning as in FIG. 1.
  • segment 9 the direction of movement of the caterpillar is shown schematically by arrows, as is segment 9 with a continuous pouring edge 10, 11, 12, 13, 14 and 15 an earth building material is covered.
  • FIG. 3 shows a cross section through an industrial settling plant 1, in which a dam 2 is arranged above the sludge 16 of the settling plant 1.
  • the continuous pouring edges 14 in the direction of the middle of the pond are indicated in the dam 2.
  • FIG. 4 shows the formation of a bulk dam with large sediment thicknesses.
  • FIG. 4a shows an industrial settling plant 1 with sludge 16, in which a bulk dam 2 is to be built up. Due to the large sediment thickness, a so-called bottom fracture occurs, which is symbolized by the arrows, ie the sediments are affected by the heavier material displaced. As a result of this displacement, there is a greater embedment depth of the stockpile material and thus a higher breaking load if it is overturned.
  • a basic fracture figure 20 forms in the settling plant 1. In other words, the stockpile material moves back to the surface of the settling plant 1 in a semicircular movement (FIG. 4b). In the event of further flooding, the dam 2 can be formed in the industrial settling plant 1 (FIG. 4c).

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Soil Sciences (AREA)
  • Remote Sensing (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Treatment Of Sludge (AREA)

Abstract

A sanitation process is disclosed for industrial sedimentation plants by which the sediments are covered and dewatered. In order to cover the sediments with earth materials, dams (2, 3, 4) which at first float on the sludge are arranged in such a way that an embankment is formed over a continuous pouring edge, the floating dams are arranged on the industrial sedimentation plant (1) in such a way that the sedimentation plant is segmented, and the thus formed segments (9) are covered with earth materials over a continuous pouring edge, and thus a bearing surface is created for a covering. The sludge is dewatered by consolidation.

Description

Verfahren zur Sanierung von Industriellen Abβetzanlaσen Process for the rehabilitation of industrial wastewater treatment plants
Die Erfindung betrifft ein Verfahren zur Sanierung von Industriellen Absetzanlagen gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for the refurbishment of industrial settling plants according to the preamble of claim 1.
Es ist aus der Veröffentlichung "Dränentwässerung einer Schlammdeponie mit Hilfe einer Geozell-Matratze", Sei¬ ten 287 - 294, 2. Kongreß, Kunststoffe in der Geotech- nik, K-GEO 92, Luzern, 20. - 22. Mai 1992, Herausgeber SVG Schweizerischer Verband der Geotextilfachleute c/o EMPA St. Gallen, bekannt, daß Industrielle Absetzanla¬ gen mit Hilfe von Geotextilsystem abgedeckt werden. Diese Art der Abdeckung ist sehr aufwendig; besonders bei großen Tailings werden hohe Investionen für die Geotextilien benötigt.It is from the publication "Drainage of a Mud Landfill Using a Geocell Mattress", pages 287-294, 2nd Congress, Plastics in Geotechnics, K-GEO 92, Lucerne, May 20-22, 1992, Publisher SVG Swiss Association of Geotextile Specialists c / o EMPA St. Gallen, known that industrial settling plants are covered with the help of a geotextile system. This type of cover is very complex; Large investments in geotextiles are required, especially for large tailings.
Der Erfindung liegt die Aufgabe zugrunde, Industrielle Absetzanlagen mit relativ geringem Aufwand zu sanieren.The invention has for its object to renovate industrial settling plants with relatively little effort.
Diese Aufgabe wird durch die Merkmale des Kennzeichens des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.
Eine Weiterbildung der Erfindung ist in Anspruch 2 nie¬ dergelegt. Gemäß der Erfindung werden Dämme in der Industriellen Absetzanlage ausgebildet, wobei die Dämme vom Ufer aus in Richtung Teich bzw. nächsten Querdamm vorgetrieben werden. Dabei wird ein Erdbaustoff, z. B. Haldenmateri¬ al, bis zum Ende der stabilisierten Fläche mit LKW's antransportiert. Mit einer breitkettigen Raupe (Moorraupe) wird das abgekippte Material auf einer Front von z. B. 30 m Breite in Richtung Längsachse des Dammes geschoben. Das Vorschieben des Material erfolgt derart, daß sich die Raupe stets auf einem Niveau be¬ findet, das deutlich über dem Niveau des Tailingssedi- ments liegt. Über die Schüttkante wird das Haldenmate¬ rial in Richtung "Teichmitte", bzw. zum nächsten Quer¬ damm, geschüttet. Die überschütteten Bereiche können zu Beginn jeweils nur mit Moorraupen befahren werden. Erst wenn die Hauptsetzung abgeklungen ist (nach ca. 2 - 3 Tagen) kann diese Strecke mit LKW's befahren werden.A further development of the invention is set out in claim 2. According to the invention, dams are formed in the industrial settling plant, the dams being driven from the bank towards the pond or the next transverse dam. An earth building material, e.g. B. Haldenmateri¬ al, transported to the end of the stabilized area with trucks. With a wide-chain caterpillar (moor caterpillar) the dumped material is on a front of z. B. 30 m wide in the direction of the longitudinal axis of the dam. The material is advanced in such a way that the caterpillar is always at a level which is clearly above the level of the tailing sediment. The heap material is poured over the pouring edge in the direction of the "middle of the pond" or to the next transverse dam. The flooded areas can only be entered with moor caterpillars at the beginning. Only when the main setting has subsided (after approx. 2 - 3 days) this route can be traveled by truck.
Die Schüttkantenhöhe ist abhängig von der Konsistenz des Schlammes. In der Regel kann mit einer Schüttkante von ca. 3 bis 6 m Höhe gearbeitet werden. Die Industri¬ elle Absetzanlage wird mit Hilfe dieser so gebildeten Schüttdämme, die in Längs- und Querrichtung verlaufen, in einzelne Segmente erteilt. Nach Ausbildung dieser Schüttdämme werden die einzelnen Segmente sukzessive auf die oben beschriebene Art ebenfalls abgedeckt.The height of the pouring edge depends on the consistency of the sludge. As a rule, you can work with a pouring edge of approx. 3 to 6 m in height. The industrial settling plant is issued into individual segments with the aid of the bulk dams thus formed, which run in the longitudinal and transverse directions. After formation of these bulk dams, the individual segments are also gradually covered in the manner described above.
Für die Überschüttung im Bereich der Segmente zwischen den Schüttdämmen kann eine deutlich geringere Schütt¬ kante vorgesehen werden. Die überschütteten Teilfelder sind ebenfalls vorerst nur mit Moorraupen zu befahren. Die Entwässerung der Industriellen Absetzanlagen er¬ folgt durch Konsolidierung des Schlammes.A significantly lower pouring edge can be provided for the covering in the area of the segments between the pouring dams. The flooded subfields are also only to be driven on with moor caterpillars for the time being. The industrial settling plants are dewatered by consolidating the sludge.
Soll das Wasser dem Sediment schnell und gezielt entzo¬ gen werden, können nach dem Erstellen der Schüttdämme Vakuu brunnen in den Dämmen niedergebracht werden. Es hat sich gezeigt, daß bei sehr frühem und intensivem Einsatz von Vakuumbrunnen es in den Teilfeldern schnell zu einer Entwässerung des Sedimentes kommen kann, daß eine Stabilisierung und Überschüttung der Teilfelder kurzfristig möglich ist.If the water is to be removed from the sediment quickly and in a targeted manner, vacuum wells can be brought into the dams after the dump dams have been created. It has been shown that with very early and intensive use of vacuum wells, the sediment can quickly drain in the subfields, so that the subfields can be stabilized and overburdened at short notice.
Die Erfindung wird nachfolgend anhand der Zeichnung nä¬ her beschrieben. Es zeigt dieThe invention is described below with reference to the drawing. It shows the
Fig. 1 das Verfahrensprinzip der Ausbildung der Schüttdämme;Figure 1 shows the principle of the formation of the bulk dams.
Fig. 2 die Abdeckung eines durch Schüttdämme gebildeten Segmentes;2 shows the covering of a segment formed by bulk dams;
Fig. 3 einen Querschnitt durch eine Absetz¬ anlage mit einem Schüttdamm;3 shows a cross section through a settling plant with a bulk dam;
Fig. 4 die Ausbildung eines Schüttdamms bei großen Sedimentmächtigkeiten undFig. 4 shows the formation of a bulk dam with large sediment thicknesses and
Fig. 5 die Entwässerung mit Hilfe von Vakuumbrunnen.Fig. 5 shows the drainage using vacuum wells.
Aus der Figur 1 geht hervor, daß in einer Industriellen Absetzanlage 1 ein Längsdamm 2 , ein Längsdamm 3 und ein Querdamm 4 angeordnet sind. Die Dämme 2, 3 und 4 werden mit Erdbaustoffen gebildet, die in Kippbereichen 5 und 6 mit LKW's angeliefert werden. Mit einer breitkettigen Raupe wird das Material in die Industrielle Absetzan¬ lage 1 geschoben. Die Schieberichtungen der Raupe sind in den einzelnen Dämmen 2, 3 und 4 durch Pfeile darge¬ stellt. Nachdem die Hauptsetzung abgeklungen ist können die Dämme 2, 3 und 4 mit LKW's befahren werden und das Material auf dem Schüttdamm abgekippt werden. Die Kipp¬ bereiche 7 auf Damm 2 und 8 auf Damm 3 sind beispiel¬ haft dargestellt. Durch die Dämme 2, 3 und 4 wird ein Segment 9 gebildet.It can be seen from FIG. 1 that a longitudinal dam 2, a longitudinal dam 3 and a transverse dam 4 are arranged in an industrial settling plant 1. The dams 2, 3 and 4 will be formed with earth building materials, which are delivered in trucks 5 and 6 in tipping areas. The material is pushed into the industrial settling plant 1 with a wide-chain caterpillar. The crawling directions of the caterpillar are represented by arrows in the individual dams 2, 3 and 4. After the main settlement has subsided, the dams 2, 3 and 4 can be driven on by trucks and the material can be dumped on the bulk dam. The tilting areas 7 on embankment 2 and 8 on embankment 3 are shown by way of example. A segment 9 is formed by the dams 2, 3 and 4.
In der Figur 2 ist die Überschüttung eines Segmentes 9 schematisch dargestellt. Die Bezugszeichen haben die gleiche Bedeutung wie in der Figur 1. In dem Segment 9 sind durch Pfeile die Schieberichtung der Raupe schema¬ tisch dargestellt, wie über eine fortlaufende Schütt¬ kante 10, 11, 12, 13, 14 und 15 das Segment 9 mit einem Erdbaustoff abgedeckt wird.The overburdening of a segment 9 is shown schematically in FIG. The reference numerals have the same meaning as in FIG. 1. In segment 9, the direction of movement of the caterpillar is shown schematically by arrows, as is segment 9 with a continuous pouring edge 10, 11, 12, 13, 14 and 15 an earth building material is covered.
Die Figur 3 zeigt einen Querschnitt durch eine Indu¬ strielle Absetzanlage 1, in der ein Damm 2 über dem Schlamm 16, der Absetzanlage 1 angeordnet ist. In dem Damm 2 sind die fortlaufenden Schüttkanten 14 in Rich¬ tung Teichmitte angedeutet.FIG. 3 shows a cross section through an industrial settling plant 1, in which a dam 2 is arranged above the sludge 16 of the settling plant 1. The continuous pouring edges 14 in the direction of the middle of the pond are indicated in the dam 2.
Die Figur 4 zeigt die Ausbildung eines Schüttdammes bei großen Sedimentmächtigkeiten. In Figur 4a ist eine In¬ dustrielle Absetzanlage 1 mit Schlamm 16 dargestellt, in der ein Schüttdamm 2 aufgebaut werden soll. Aufgrund der großen Sedimentmächtigkeit kommt es zu einem soge¬ nannten Grundbruch, der durch die Pfeile symbolisiert wird, d. h. die Sedimente werden von dem schwereren Ma- terial verdrängt. Aufgrund dieser Verdrängung kommt es zu einer größeren Einbindtiefe des Haldenmaterials und somit zu einer höheren Grundbruchlast bei weiterer Überkippung. Durch Versuche hat sich herausgestellt, daß sich eine Grundbruchfigur 20 in der Absetzanlage 1 ausbildet. D. h., das Haldenmaterial wandert in einer halbkreisförmigen Bewegung wieder an die Oberfläche der Absetzanlage 1 (Figur 4b) . Bei weiterer Überschüttung kann der Damm 2 in der Industriellen Absetzanlage 1 ausgebildet werden (Figur 4c).FIG. 4 shows the formation of a bulk dam with large sediment thicknesses. FIG. 4a shows an industrial settling plant 1 with sludge 16, in which a bulk dam 2 is to be built up. Due to the large sediment thickness, a so-called bottom fracture occurs, which is symbolized by the arrows, ie the sediments are affected by the heavier material displaced. As a result of this displacement, there is a greater embedment depth of the stockpile material and thus a higher breaking load if it is overturned. Experiments have shown that a basic fracture figure 20 forms in the settling plant 1. In other words, the stockpile material moves back to the surface of the settling plant 1 in a semicircular movement (FIG. 4b). In the event of further flooding, the dam 2 can be formed in the industrial settling plant 1 (FIG. 4c).
In der Figur 5 sind Brunnen 30 in einer Industriellen Absetzanlage 1, die in einem Damm 2 angeordnet sind, dargestellt. Mit Hilfe dieser Brunnen 30, die in Form von Brunnengalerien angeordnet werden, wird die Entwäs¬ serung und damit die Konsolidierung des Schlammes 16 beschleunigt. 5 shows wells 30 in an industrial settling plant 1, which are arranged in a dam 2. With the help of these wells 30, which are arranged in the form of well galleries, the dewatering and thus the consolidation of the sludge 16 is accelerated.
B E Z U G S Z E I C H E N L I S T EB E Z U G S Z E I C H E N L I S T E
1 Absetzanlage1 sedimentation system
2 Längsdamm2 longitudinal dam
3 Längsdamm3 longitudinal dam
4 Querdamm4 transverse dam
5 Kippbereich5 tilting area
6 Kippbereich6 tilting area
7 Kippbereich7 tilting area
8 Kippbereich8 tilting area
9 Segment9 segment
10 Schüttkante10 pouring edge
11 Schüttkante11 pouring edge
12 Schüttkante12 pouring edge
13 Schüttkante13 pouring edge
14 Schüttkante14 pouring edge
15 Schüttkante 16 Schlamm15 pouring edge 16 mud
20 Grundbruchfigur20 ground breaking figure
30 Brunnen 30 wells

Claims

Patentansprüche: Claims:
1. Verfahren zur Sanierung von Industriellen Absetzanlagen durch Abdeckung und Entwässerung der Sedimente, dadurch gekennzeichnet, daß eine Überschüttung mit Erdbaustof¬ fen vorgenommen wird, wobei1. A method for the remediation of industrial settling plants by covering and draining the sediments, characterized in that an overburden with Erdbaustof¬ fen is carried out, wherein
a) zunächst auf dem Schlamm schwimmende Dämme da¬ durch angeordnet werden, daß über eine fortlau¬ fende Schüttkante ein Schüttdamm ausgebildet wird,a) dams floating on the sludge are first arranged by forming a dump dam over a continuous pouring edge,
b) die schwimmenden Dämme auf der industriellen Ab- setzanlage derart angeordnet werden, daß die Ab¬ setzanlage segmentiert wird,b) the floating dams are arranged on the industrial settling plant in such a way that the settling plant is segmented,
c) die so gebildeten Segmente über eine fortlaufen¬ de Schüttkante mit Erdbaustoffen abgedeckt und so eine tragfähige Oberfläche für eine Abdeckung geschaffen wird, undc) the segments formed in this way are covered with earth building materials over a continuous pouring edge, thus creating a load-bearing surface for a covering, and
d) die Entwässerung durch Konsolidierung des Schlammes erfolgt.d) the dewatering takes place through consolidation of the sludge.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Entwässerung durch Vakuumbrunnen, die in den Dämmen niedergebracht werden, beschleunigt wird. 2. The method according to claim 1, characterized in that the drainage is accelerated by vacuum wells which are brought down in the dams.
PCT/EP1994/002382 1993-07-21 1994-07-20 Sanitation process for industrial sedimentation plants WO1995003142A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU74593/94A AU7459394A (en) 1993-07-21 1994-07-20 Sanitation process for industrial sedimentation plants

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4324433.5 1993-07-21
DE19934324433 DE4324433C1 (en) 1993-07-21 1993-07-21 Process for the sanitation of industrial sedimentation sites

Publications (1)

Publication Number Publication Date
WO1995003142A1 true WO1995003142A1 (en) 1995-02-02

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DE (1) DE4324433C1 (en)
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065926A1 (en) * 1998-06-17 1999-12-23 Bio Merieux Method for marking a ribonucleic acid and resulting marked rna fragments
US6489114B2 (en) 1999-12-17 2002-12-03 Bio Merieux Process for labeling a ribonucleic acid, and labeled RNA fragments which are obtained thereby
US6902891B2 (en) 1999-12-17 2005-06-07 Bio Merieux Process for labeling a nucleic acid

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
DE10059076B4 (en) * 2000-11-28 2005-10-06 Rag Ag Sludge beds for dewatering flotation mine discharges

Citations (1)

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Publication number Priority date Publication date Assignee Title
US4611951A (en) * 1985-10-07 1986-09-16 American Cyanamid Company Process for reclamation of excavated mine sites

Patent Citations (1)

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US4611951A (en) * 1985-10-07 1986-09-16 American Cyanamid Company Process for reclamation of excavated mine sites

Non-Patent Citations (1)

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Title
2. KONGRESS , KUNSTSTOFFE IN DER GEOTECHNIK K-GEO 92 , LUZERN , 20-22 Mai 1992 SVG Schweizerischer Verband der Geotextilfachleute c/o EMPA St. *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999065926A1 (en) * 1998-06-17 1999-12-23 Bio Merieux Method for marking a ribonucleic acid and resulting marked rna fragments
FR2780059A1 (en) * 1998-06-17 1999-12-24 Bio Merieux PROCESS FOR MARKING A RIBONUCLEIC ACID AND RNA FRAGMENTS MARKS THUS OBTAINED
US6376179B1 (en) 1998-06-17 2002-04-23 Bio Merieux Process for labeling a ribonucleic acid, and labeled RNA fragments which are obtained thereby
US6921640B2 (en) 1998-06-17 2005-07-26 Bio Merieux Process for labeling a ribonucleic acid
US6489114B2 (en) 1999-12-17 2002-12-03 Bio Merieux Process for labeling a ribonucleic acid, and labeled RNA fragments which are obtained thereby
US6902891B2 (en) 1999-12-17 2005-06-07 Bio Merieux Process for labeling a nucleic acid

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DE4324433C1 (en) 1994-08-25
AU7459394A (en) 1995-02-20

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