FR2314897A1 - Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod. - Google Patents

Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.

Info

Publication number
FR2314897A1
FR2314897A1 FR7519095A FR7519095A FR2314897A1 FR 2314897 A1 FR2314897 A1 FR 2314897A1 FR 7519095 A FR7519095 A FR 7519095A FR 7519095 A FR7519095 A FR 7519095A FR 2314897 A1 FR2314897 A1 FR 2314897A1
Authority
FR
France
Prior art keywords
sludge
fertiliser
prod
giving
coagulants
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.)
Granted
Application number
FR7519095A
Other languages
French (fr)
Other versions
FR2314897B1 (en
Inventor
I S Turovsky
L L Goldfarb
L V Zamoschin
A I Zhukov
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.)
INST KOMMUNALNOGO VODOSNAB
Original Assignee
INST KOMMUNALNOGO VODOSNAB
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 INST KOMMUNALNOGO VODOSNAB filed Critical INST KOMMUNALNOGO VODOSNAB
Priority to FR7519095A priority Critical patent/FR2314897A1/en
Publication of FR2314897A1 publication Critical patent/FR2314897A1/en
Application granted granted Critical
Publication of FR2314897B1 publication Critical patent/FR2314897B1/fr
Granted 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
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents

Landscapes

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

Abstract

A sludge waste stream is treated by coagulating the sludge by means of mineral coagulants, mechanically dehydrating the sludge, and drying the dehydrated sludge to 10-50% (10-30%) moisture content by means of a gaseous heat-carrier with an initial temp. of 600-900 degrees C under countercurrent and air-stream conditions, and adding dried sludge to the coagulation step in an amt. to give a 50-120 g/litre sludge mixt. Smaller amts. of coagulants are used. The capacity of the treatment plant is increased. The slurry has a low water content after dehydration. Industrial wastes or sewage can be treated. The prod. can be used as fertiliser, giving 1.5-25 x increase in yield and better soil structure. The fertiliser can be used once in 3 years at a rate of 10-15 tons/hectare. If the sludge contains toxic components it may be burned or taken to tips.
FR7519095A 1975-06-18 1975-06-18 Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod. Granted FR2314897A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7519095A FR2314897A1 (en) 1975-06-18 1975-06-18 Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7519095A FR2314897A1 (en) 1975-06-18 1975-06-18 Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.

Publications (2)

Publication Number Publication Date
FR2314897A1 true FR2314897A1 (en) 1977-01-14
FR2314897B1 FR2314897B1 (en) 1977-12-09

Family

ID=9156709

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7519095A Granted FR2314897A1 (en) 1975-06-18 1975-06-18 Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.

Country Status (1)

Country Link
FR (1) FR2314897A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223402A1 (en) * 1971-05-17 1972-11-30 Mitsubishi Heavy Ind Ltd Process for treating waste water

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2223402A1 (en) * 1971-05-17 1972-11-30 Mitsubishi Heavy Ind Ltd Process for treating waste water

Also Published As

Publication number Publication date
FR2314897B1 (en) 1977-12-09

Similar Documents

Publication Publication Date Title
SE8400043D0 (en) PROCEDURE FOR THE PREPARATION OF A COMPOSIBLE MIXTURE OF SLAM FROM WASTE WASTE WASTE PURIFICATION DEVICE FOR THE USE OF THE MIXTURE
ES445447A1 (en) Gas dehydration with liquid desiccants and regeneration thereof
ATE102242T1 (en) DEVICE AND METHOD FOR DRYING LOW-GRADE COAL.
PL1771074T3 (en) Dehydration method
JPS531103A (en) Treatment of plating sludge
AU626443B2 (en) Improving the water absorption capacity of crosslinked, water-swellable polymers
IT1037442B (en) Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.
FR2314897A1 (en) Coagulating waste sludge streams by addn. of dried sludge - and smaller amts. of mineral coagulants, giving fertiliser prod.
DE69108102D1 (en) Process for the recovery of maleic anhydride from reaction gas mixtures.
KR830005906A (en) Clay mucus treatment method
DE3546303A1 (en) METHOD AND DEVICE FOR DRYING WATER PLANTS
EP0211659A3 (en) Gas drying process
GB1299344A (en) The fractionation of tall oil
JPS5594675A (en) Method of processing drained water from coke production plant
CN114591069B (en) Sludge ceramsite and preparation method and application thereof
GB572171A (en) Improvements in or relating to processes for the production of organic fertilizers and apparatus therefor
FR2279458A1 (en) Organic manure granulation - by drying, and compacting, granulating after rehydrating to 15-20 percent moisture
SU443015A1 (en) Method of reprocessing live-stock discharge
JPS5827700A (en) Treatment of sewage sludge
JPS5547200A (en) Drying sludge or like
FR2123516A1 (en) Conditioning and de watering of effluent sludge - by mixing with flocculants
ES453321A1 (en) A procedure and a corresponding device for the continuous treatment of the wet mud obtained in a water treatment plant. (Machine-translation by Google Translate, not legally binding)
Hill et al. Neutrolosis Treatment of Acid Mine Drainage
JPS57156097A (en) Carbonization treatment for converting activated sludge to active carbon
NO20021839D0 (en) Process for dewatering sludge

Legal Events

Date Code Title Description
ST Notification of lapse