DE2415160A1 - Mud filter for synthetic fabric - featuring a closer weave near stitched supports - Google Patents

Mud filter for synthetic fabric - featuring a closer weave near stitched supports

Info

Publication number
DE2415160A1
DE2415160A1 DE2415160A DE2415160A DE2415160A1 DE 2415160 A1 DE2415160 A1 DE 2415160A1 DE 2415160 A DE2415160 A DE 2415160A DE 2415160 A DE2415160 A DE 2415160A DE 2415160 A1 DE2415160 A1 DE 2415160A1
Authority
DE
Germany
Prior art keywords
esp
threads
stitched
zones
weave
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
DE2415160A
Other languages
German (de)
Inventor
Eduard Dipl Chem Dr Hilscher
Karl-Heinz Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Priority to DE2415160A priority Critical patent/DE2415160A1/en
Priority to SE7407985A priority patent/SE7407985L/xx
Priority to CH825774A priority patent/CH586163A5/xx
Priority to AT503674A priority patent/AT331736B/en
Priority to JP49068795A priority patent/JPS5048558A/ja
Priority to ES427372A priority patent/ES427372A1/en
Priority to IT24122/74A priority patent/IT1022047B/en
Priority to DK325774A priority patent/DK325774A/da
Priority to FR7421082A priority patent/FR2234025B1/fr
Priority to NL7408183A priority patent/NL7408183A/xx
Priority to GB2722374A priority patent/GB1474547A/en
Priority to CA212,093A priority patent/CA1086658A/en
Publication of DE2415160A1 publication Critical patent/DE2415160A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/128—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using batch processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/086—Filter cloth, i.e. woven, knitted or interlaced material of inorganic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1291—Other parameters

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Filtering Materials (AREA)

Abstract

Tubular fabric filters made from synthetic filaments in a square woven pattern where a closer weave is used in zones to be stitched to rigid supports or spacers. Esp. applicable to filters with 8.5 threads/cm warp and weft made of 2200 dtex threads of polyamide, polyester, polyolefin or glass filaments, esp. high tenacity polyester monofilaments which were flat woven. Esp. suitable for clarifying water from settling tanks or flocculation vats for concentrating sewage. Thetithter mesh zones tolerate local distortion or gathering of the weave pattern by the stresses of the support stitches without generating oversize pores which would admit unwanted particles. Thread frequency increased from 8.5 to 11 threads/cm in the support stitch zones.

Description

Verfahren zum Entwässern von Schlämmen Zusatz zu Patent (Anmeldung P 23 31 118.4) Gegenstand des-Hauptpatentes (Anmeldung P 23 31 118.4) ist ein achlauchartiger Schlammfilter aus einem synthetischen Gewebe mit vertikal verlaufenden Kett- und horizontal verlaufenden Schußfäden sowie Nähten im Bereich der Aufhängung des Schlammfilters und am Bodenteil, das dadurch gekennzeichnet ist, daß die Schußfadeneinstellungen des Gewebes ii Bereich der Nähte an der Aufhängung und am Bodenteil dichter sind als in den übrigen Gewebeteilen des Schlamm filters.Process for dewatering sludge Addition to patent (registration P 23 31 118.4) The subject of the main patent (application P 23 31 118.4) is a hose-like Mud filter made of a synthetic fabric with vertical warp and horizontally running weft threads and seams in the area of the suspension of the sludge filter and on the bottom part, which is characterized in that the weft thread settings of the fabric ii area of the seams on the suspension and on the bottom part are denser than in the rest of the fabric parts of the sludge filter.

Gegenstand des Hauptpatentes ist auch ein Verfahren zum Entwässern von Schlämmen mit Hilfe der beanspruchten Vorrichtung.The subject of the main patent is also a process for dewatering of sludge with the aid of the claimed device.

Es hat sich nun herausgestellt, da diese Vorrichtung ganz besonders für die Entwässerung von Abwasserklärschlamm geeignet ist. Unter dem Begriff Abwasserklärschlamm sollen nicht nur die Schlämme verstanden werden, die in Haushalten, Städten und Gemeinden anfallen, sondern auch dieJoni8tn, die in der Landwirtschaft anfallen, beispielsweise auch die Nullen, die bekanntlich aus Exkrementen, vermischt mit Urin und Wasser bestehen.It has now been found that this device is very special is suitable for the dewatering of sewage sludge. Under the term sewage sludge not only should be understood the sludges that exist in households, cities and Municipalities, but also the fees that arise in agriculture, for example the zeros, which are known to be found in excrement mixed with urine and water exist.

Als synthetische Gewebe fUr diesen Anwendungszweck lassen sich für Sb Schlammfilter z.B. Gewebe aus Polyamiden, Polyesten und Polyolefinen verwenden. Geeignet sind beispielsweise Gewebe aus Polycaprolaktam, Poly(hexamethylenadipat), Poly-(hexamethylensebacat), Polyundscansäure amid, polythy1enterephthalat, Polybutylenterephthalat Poly-l, 4-dimethylolcyclohexanterephthalat sowie analoge Produkte au Basis von lsophthalsäure, Polyäthylen oder Polypropylen, ferner Poly-p-phenylen-terephthal amid.Synthetic fabrics for this purpose can be used for Sb mud filters e.g. use fabrics made of polyamides, polyesters and polyolefins. For example, fabrics made of polycaprolactam, poly (hexamethylene adipate), Poly (hexamethylene sebacate), polyundscanoic acid amide, polythylene terephthalate, polybutylene terephthalate Poly-1,4-dimethylolcyclohexane terephthalate and analogous products based on isophthalic acid, Polyethylene or polypropylene, also poly-p-phenylene-terephthalamide.

Der Entwässerung kann der Klärschlamm als solcher unterworfen werden.The sewage sludge as such can be subjected to dewatering.

Vielfach ist es jedoch bevorzugtnoch anion- oder kationaktive Flockungshilfsmittel, z.B. auf Basis von Polya@rylamid, polymeren Phosphaten, Eisenchlorid, Eisen- oder Aluminiumsulfat, Kalk oder Rohphosphat zuzusetzen.In many cases, however, it is still preferred to use anionic or cationic flocculants e.g. based on polyamide, polymeric phosphates, iron chloride, iron or Add aluminum sulfate, lime or rock phosphate.

Die Erfindung wird durch das folgende Beispiel erliutert: Eeispiel: Ausgefaulter Klärsclllamm einer kommunalen Kläranlage mit einem Feststoffgehalt von ca. 5 % wird mit 150 g pro cbm eines kationaktiver Flockungshilfsmittels auf Basis von Polyacrylamid vermischt und über eine Mischtrommel in den erfindungsgemißen Schlammfilter gegeben. Die @rderleistung der Pumpe beträgt 3 cbm pro Stunde. Während der Füllung @aufen 12)-)- . je Stunde ab.Nach 20 Stunden weiteren Verweilens im Filter hat der entwässerte Schlamm einen Feststoffgehalt von 22 %. Die Volumenvernjinderung beträgt ca.80 %.The invention is illustrated by the following example: Example: Digested sewage sludge from a municipal sewage treatment plant with a solid content of approx. 5% is increased with 150 g per cubic meter of a cationic flocculant Based on polyacrylamide and mixed through a mixing drum in the inventive Given a sludge filter. The pump output is 3 cbm per hour. While the filling @aufen 12) -) -. per hour. After 20 hours of remaining in the Filter, the dewatered sludge has a solids content of 22%. The volume reduction is about 80%.

Claims (3)

Patent an srüch e Patent to srüch e 0 Verfahren zum Entwässern von Schlammen nach Patent ....0 method for dewatering sludge according to patent .... (Anmeldung P 23 31 118.h), dadurch gekennzeichnet, daß Abwasserklärschlamm entwässert wird.(Registration P 23 31 118.h), characterized in that sewage sludge is drained. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß Güllen entwässert werden.2. The method according to claim 1, characterized in that manure drains will. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Entwässerungsschlanim vor der Entwässerung mit Flockungshilfsmitteln behandelt wird.3. The method according to claim 1 or 2, characterized in that the Drainage sludge is treated with flocculants before drainage.
DE2415160A 1973-06-19 1974-03-29 Mud filter for synthetic fabric - featuring a closer weave near stitched supports Pending DE2415160A1 (en)

Priority Applications (12)

Application Number Priority Date Filing Date Title
DE2415160A DE2415160A1 (en) 1974-03-29 1974-03-29 Mud filter for synthetic fabric - featuring a closer weave near stitched supports
SE7407985A SE7407985L (en) 1973-06-19 1974-06-17
CH825774A CH586163A5 (en) 1973-06-19 1974-06-17
AT503674A AT331736B (en) 1973-06-19 1974-06-18 HOSE-LIKE MUD FILTER
JP49068795A JPS5048558A (en) 1973-06-19 1974-06-18
ES427372A ES427372A1 (en) 1973-06-19 1974-06-18 Filters
IT24122/74A IT1022047B (en) 1973-06-19 1974-06-18 FILTER FOR TUBE MUDS AND PROCESS FOR THE DEHYDRATION OF SLUDGE
DK325774A DK325774A (en) 1973-06-19 1974-06-18
FR7421082A FR2234025B1 (en) 1973-06-19 1974-06-18
NL7408183A NL7408183A (en) 1973-06-19 1974-06-19
GB2722374A GB1474547A (en) 1973-06-19 1974-06-19 Filters
CA212,093A CA1086658A (en) 1974-03-29 1974-10-23 Filter sock with increased thread count at ends

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2415160A DE2415160A1 (en) 1974-03-29 1974-03-29 Mud filter for synthetic fabric - featuring a closer weave near stitched supports

Publications (1)

Publication Number Publication Date
DE2415160A1 true DE2415160A1 (en) 1975-10-23

Family

ID=5911519

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2415160A Pending DE2415160A1 (en) 1973-06-19 1974-03-29 Mud filter for synthetic fabric - featuring a closer weave near stitched supports

Country Status (2)

Country Link
CA (1) CA1086658A (en)
DE (1) DE2415160A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442535A1 (en) * 1984-10-12 1986-04-17 Heinz Dorr Deponienbetrieb GmbH, 8960 Kempten Process for treating the supernatant water from faecal sludges, in particular from domestic sewage treatment plants

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3442535A1 (en) * 1984-10-12 1986-04-17 Heinz Dorr Deponienbetrieb GmbH, 8960 Kempten Process for treating the supernatant water from faecal sludges, in particular from domestic sewage treatment plants

Also Published As

Publication number Publication date
CA1086658A (en) 1980-09-30

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