ES342919A1 - Process and apparatus for drying sludge such as sewage sludge - Google Patents

Process and apparatus for drying sludge such as sewage sludge

Info

Publication number
ES342919A1
ES342919A1 ES342919A ES342919A ES342919A1 ES 342919 A1 ES342919 A1 ES 342919A1 ES 342919 A ES342919 A ES 342919A ES 342919 A ES342919 A ES 342919A ES 342919 A1 ES342919 A1 ES 342919A1
Authority
ES
Spain
Prior art keywords
sludge
drying
evaporator
waste gas
plant
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.)
Expired
Application number
ES342919A
Other languages
Spanish (es)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of ES342919A1 publication Critical patent/ES342919A1/en
Expired 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • 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
    • 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
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Abstract

A process for drying sludge comprises drying in a thermal drying plant producing a watervapour-containing waste gas, wherein heat contained in the waste gas of the plant is used partially to dewater the sludge in a partial-pressure evaporator to which the sludge is fed prior to introduction into the drying plant. The waste gas from a drying plant substantially as described in Specification 1,097,846, viz a rotary drum drier 2 heated by a furnace 1 and cyclone separator 6, is fed to an air preheater 10 and thence both to a partial-pressure evaporator 12 containing sludge 12a and sludge preheater 11. The sludge is recirculated through lines 13, 14 from the heater to the evaporator and vice versa with fresh sludge being introduced into the line 14 and partially de-watered sludge is withdrawn from the evaporator through a line 17 to a mixer 4 for mixture with sawdust or the like absorbent carrier material prior to entry into the drier 2.
ES342919A 1966-07-12 1967-07-11 Process and apparatus for drying sludge such as sewage sludge Expired ES342919A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1008666A CH441142A (en) 1966-07-12 1966-07-12 Process for utilizing the vapor waste heat from a thermal drying system for sludge, in particular sewage sludge, and system for carrying out the process

Publications (1)

Publication Number Publication Date
ES342919A1 true ES342919A1 (en) 1968-10-01

Family

ID=4359171

Family Applications (1)

Application Number Title Priority Date Filing Date
ES342919A Expired ES342919A1 (en) 1966-07-12 1967-07-11 Process and apparatus for drying sludge such as sewage sludge

Country Status (8)

Country Link
AT (1) AT275435B (en)
BE (1) BE700989A (en)
CH (1) CH441142A (en)
ES (1) ES342919A1 (en)
GB (1) GB1127267A (en)
LU (1) LU53994A1 (en)
NL (1) NL154991B (en)
SE (1) SE334581B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20050401A1 (en) * 2005-03-11 2006-09-12 Vincenzo Bellini PROCEDURE AND PLANT FOR THE DRIING OF SLUDGE OR SUBSTANCES OF A HUMIDITY
IL204790A (en) * 2010-03-28 2014-07-31 Airgreen Ltd Method of processing and drying waste in a cyclic continuous process

Also Published As

Publication number Publication date
SE334581B (en) 1971-04-26
BE700989A (en) 1967-12-18
AT275435B (en) 1969-10-27
GB1127267A (en) 1968-09-18
DE1729240A1 (en) 1971-06-09
LU53994A1 (en) 1967-08-30
NL154991B (en) 1977-11-15
DE1729240B2 (en) 1975-12-11
NL6709438A (en) 1968-01-15
CH441142A (en) 1967-07-31

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