DE2403200A1 - Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating - Google Patents

Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating

Info

Publication number
DE2403200A1
DE2403200A1 DE2403200A DE2403200A DE2403200A1 DE 2403200 A1 DE2403200 A1 DE 2403200A1 DE 2403200 A DE2403200 A DE 2403200A DE 2403200 A DE2403200 A DE 2403200A DE 2403200 A1 DE2403200 A1 DE 2403200A1
Authority
DE
Germany
Prior art keywords
sludge
gas
heating
oil
sewage sludge
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
DE2403200A
Other languages
German (de)
Inventor
Wilhelm Boettinger
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.)
WILHELM BOETTINGER ROHRLEITUNG
Original Assignee
WILHELM BOETTINGER ROHRLEITUNG
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 WILHELM BOETTINGER ROHRLEITUNG filed Critical WILHELM BOETTINGER ROHRLEITUNG
Priority to DE2403200A priority Critical patent/DE2403200A1/en
Publication of DE2403200A1 publication Critical patent/DE2403200A1/en
Pending legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61LMETHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L11/00Methods specially adapted for refuse
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/18Treatment of sludge; Devices therefor by thermal conditioning

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Treatment Of Sludge (AREA)

Abstract

A sterilisation plant for sewage sludge comprises a pressure vessel with an overflow linked to a shut-off stop, which commences to operate when the vessel is filled to the level of the overflow, and works at a pressure of 0, 5 atm., regulated by a safety valve. The plant has a simple design, a wide range of applications and is economic in operation.

Description

Apparat zum Sterilisieren von Abwasserschlamm Die Erfindung betrifft einen Apparat zum Sterilisieren von Abwasserschlamm, der sich durch einfache Bauart und große Anwendungsmöglichkeit auszeichnet. Apparatus for Sterilizing Sewage Sludge The invention relates to an apparatus for sterilizing sewage sludge, which is simple in construction and great application possibilities.

Der Erfindung liegt die Aufgabe zugrunde, den aus den Faulbehältern oder Kläranlagen austretenden, bakterienhaltingen Abwasserschlamm auf eine möglichst wirtschaftliche Weise zu sterilisieren.The invention is based on the object from the digesters bacteria-containing wastewater sludge escaping from sewage treatment plants to the greatest possible extent economical way to sterilize.

Die Aufgabe wird nach der Erfindung gelöst durch einen Druckkessel mit Heizröhren und Außenmantel, mit einem abstellbaren überlauf, der erst bei fast vollständig gefülltem Kessel in Tätigkeit tritt, so wie mit einem Sicherheitsventil, welches bei etwa 0,5 atü anspricht.The object is achieved according to the invention by a pressure vessel with heating tubes and outer jacket, with an overflow that can be turned off, which only starts at almost completely filled boiler comes into operation, as with a safety valve, which responds at about 0.5 atm.

Der überdruck von 0,5 atü genügt, um den im Kessel befindlichen Schlamm auf 1100C zu erhitzen und damit alle gefährlichen Bakterien darin abzutöten. Der geringe restliche Raum reicht wohl mit Sicherheit für die Ausdehnung der Flüssigkeit während der Erhitzung auf 1100C aus und bildet zugleich einen Sammelraum zur Aufnahme der aus dem Schlamm aufsteigenden Gase, verhindert aber zugleich eine unnötige Dampfbildung.The overpressure of 0.5 atm is sufficient to remove the sludge in the boiler To heat up to 1100C and thus kill all dangerous bacteria in it. Of the little remaining space is probably sufficient for the expansion of the liquid during the heating to 1100C and at the same time forms a collecting space for receiving the gases rising from the sludge, but at the same time prevents unnecessary steam formation.

Die Zeichnung gibt einen Längsschnitt durch einen Apparat nach der vorliegenden Erfindung vorwiegend schematisch wieder.The drawing gives a longitudinal section through an apparatus according to the present invention mainly schematically again.

Auf einem Sockel 1, dessen Innenraum 2 als Feuerraum eingerichtet ist und deswegen mit einer feuerfesten Schicht 3 ausgefüttert ist, ruht ein Druckkessel 4, der mit einem Außenmantel 5 umgeben ist. Der Außenmantel 5 verengt sich im oberen Teil 7 trichterförmig und ist an einen Heizgasabzug 8 angeschlossen.On a base 1, the interior 2 of which is set up as a combustion chamber and is therefore lined with a refractory layer 3, a pressure vessel rests 4, which is surrounded by an outer jacket 5. The outer jacket 5 narrows in the upper Part 7 is funnel-shaped and is connected to a heating gas vent 8.

An der einen Seite des Sockels 1 ist ein Gas- und Ölbrenner 9 angebracht, von dem aus die heißen Abgase zwischen dem Druckkessel 4 und dem Außenmantel 6 sowie durch Heizrohre 10 hindurch über den Heizgasabzug 8 ins Freie gelangen.A gas and oil burner 9 is attached to one side of the base 1, from which the hot exhaust gases between the pressure vessel 4 and the outer shell 6 as well get through heating pipes 10 through the heating gas vent 8 into the open.

In dem oberen Deckel 11 des Kessels sitzt ein Verteilerstück 12, welches den durch eine Zuleitung 13 ankommenden Abwasserschlamm verteilt in den Kessel einführt. Ein Überlauf 14, der durch ein Ventil 15 geschlossen werden kann, sorgt dafür, daß der Kessel nicht höher als bis zu der Marke 16 gefüllt wird und erst durch die Erhitzung des Kesselinhaltes auf 110° C die Marke 17 erreicht.In the upper lid 11 of the boiler sits a distributor piece 12, which introduces the incoming sewage sludge distributed through a feed line 13 into the boiler. An overflow 14, the can be closed by a valve 15, ensures that the boiler is not filled higher than the mark 16 and only reached the mark 17 when the boiler contents were heated to 110 ° C.

Vorsorglich ist noch ein Sicherheitsventil 18 vorgesehen, welches bei etwa 0,5 atü öffnet. Das austretende Faulgas-Wasserdampf-Gemisch wirdin bekannter Weise einem Sammelbehälter zugeführt, aus welchem nach der Kondensation des Wasserdampfes das Gas wieder zu Heizzwecken entnommen wird.As a precaution, a safety valve 18 is also provided, which opens at about 0.5 atm. The exiting digester gas / steam mixture is known Way fed to a collecting container, from which after the condensation of the water vapor the gas is withdrawn again for heating purposes.

Zur Bedienung des Kessels wird das beispielsweise an eine Kläranlage angeschlossene Ventil 19 geöffnet, so daß der zu sterilisierende Wasserschlamm mit einer Temperatur von etwa 330C über Rohrleitung 13 und Verteiler 12 in den Kessel 4 gelangen kann. Das Ventil 20, welches zur Umwälzpumpe führt, sowie die Ventile 22 und 23, zwischen denen Ablaufleitung 24 des Kesselbodens 25 einmündet, bleiben geschlossen. Nur das Ventil 15 bleibt offen und läßt bei gefülltem Kessel den überflüssigen Schlamm durch einen Trichter 26 nach außen gelangen.To operate the boiler, for example, it is connected to a sewage treatment plant connected valve 19 opened, so that the water sludge to be sterilized with a temperature of about 330C via pipe 13 and distributor 12 into the boiler 4 can reach. The valve 20, which leads to the circulation pump, and the valves 22 and 23, between which the drain line 24 of the boiler bottom 25 opens, remain closed. Only valve 15 remains open and leaves the superfluous when the boiler is full Get sludge through a funnel 26 to the outside.

Ist das zu beobachten, so werden die Ventile 19 und 15 geschlossen und es wird das Ventil 22 geöffnet, so daß nach 9inschalten der Umwälzpumpe 21 während der Erhitzung des Kesselinhaltes der Abwasserschlamm dauernd am Kesselboden 25 durch die Leitung 24 abgesaugt und durch Umwälzpumpe 21, Ventil 20, Leitung 13 und Verteilerstück 12 wieder dem Kessel zugeführt, bis am Thermometer 27 die gewünschte Temperatur in Höhe von 1100C abgelesen werden kann. Dann wird zuerst das Ventil 23 geöffnet und nach Entlastung des Kessels zusätzlich das Ventil 15 freigegeben, so daß der Kesselinhalt durch die Entleerungsleitung 28 schnell und ungehindert abfließen kann.If this can be observed, the valves 19 and 15 are closed and the valve 22 is opened so that after switching on the circulation pump 21 during the heating of the boiler contents of the sewage sludge continuously on the boiler bottom 25 the line 24 sucked off and through circulation pump 21, valve 20, management 13 and distributor 12 fed back to the boiler until 27 on the thermometer desired temperature of 1100C can be read off. Then first the valve 23 is opened and, after the boiler has been relieved, the valve 15 is also opened released so that the boiler contents through the drainage line 28 quickly and can flow off unhindered.

Patentanspruch:Claim:

Claims (1)

PATENT AN SPRUCH Apparat zum Sterilisieren von Abwasserschlamm, gekennzeichnet durch einen Druckkessel (4) mit Heizrohren (10) und Außenmantel (5), mit einem abstellbaren (5) überlauf (14), der erst bei fast vollkommen gefülltem Kessel (16) in Tätigkeit tritt, sowie einem Sicherheitsventil (18), welches bei etwa 0,5 atü sich öffnet. PATENT TO APPLICATION Apparatus for the sterilization of sewage sludge, marked through a pressure vessel (4) with heating pipes (10) and outer jacket (5), with one that can be switched off (5) overflow (14), which only starts to work when the boiler (16) is almost completely full occurs, as well as a safety valve (18), which opens at about 0.5 atmospheres. L e e r s e i t eL e r s e i t e
DE2403200A 1974-01-23 1974-01-23 Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating Pending DE2403200A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2403200A DE2403200A1 (en) 1974-01-23 1974-01-23 Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2403200A DE2403200A1 (en) 1974-01-23 1974-01-23 Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating

Publications (1)

Publication Number Publication Date
DE2403200A1 true DE2403200A1 (en) 1975-07-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE2403200A Pending DE2403200A1 (en) 1974-01-23 1974-01-23 Oil and gas fired sterilisation vessel for sewage sludge - includes circulating sludge in closed circuit and recovering gas for heating

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523568A1 (en) * 1982-03-16 1983-09-23 Defontaine Sa Waste water sludge digester with low energy requirement - uses compressed methane by=product to pump, preheat and agitate sludge
EP0605644A1 (en) * 1991-10-03 1994-07-13 Medical Waste Tech, Inc. System for biologically neutralizing waste material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523568A1 (en) * 1982-03-16 1983-09-23 Defontaine Sa Waste water sludge digester with low energy requirement - uses compressed methane by=product to pump, preheat and agitate sludge
EP0605644A1 (en) * 1991-10-03 1994-07-13 Medical Waste Tech, Inc. System for biologically neutralizing waste material
EP0605644A4 (en) * 1991-10-03 1996-02-28 Medical Waste Tech Inc System for biologically neutralizing waste material.

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