RO86780B - Process for removing heavy metal compounds from muds resulting from tanneries - Google Patents

Process for removing heavy metal compounds from muds resulting from tanneries

Info

Publication number
RO86780B
RO86780B RO109659A RO10965983A RO86780B RO 86780 B RO86780 B RO 86780B RO 109659 A RO109659 A RO 109659A RO 10965983 A RO10965983 A RO 10965983A RO 86780 B RO86780 B RO 86780B
Authority
RO
Romania
Prior art keywords
acid
heavy metal
sludge
resulting
metal compounds
Prior art date
Application number
RO109659A
Other languages
Romanian (ro)
Other versions
RO86780A (en
Inventor
Jozsef Bakan
Lajos Barna
Edit Bator
Bela Farkas
Zoltan Kiss
Ferenc Nagy
Zoltan Repasy
Maria Voroshazi
Original Assignee
Mta Muszaki Kemiai Kutato Intezet
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 Mta Muszaki Kemiai Kutato Intezet filed Critical Mta Muszaki Kemiai Kutato Intezet
Publication of RO86780A publication Critical patent/RO86780A/en
Publication of RO86780B publication Critical patent/RO86780B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • 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
    • C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/529—Processes or devices for preparing lime water
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F11/004—Sludge detoxification
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/303—Complexing agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
    • C02F2103/24—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof from tanneries
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/06—Controlling or monitoring parameters in water treatment pH
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

Landscapes

  • Chemical & Material Sciences (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)
  • Inorganic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Removal Of Specific Substances (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Inventia se refera la un procedeu pentru înlaturarea compusilor de metale grele din namolurile reziduale rezultate la tabacarie. în conformitate cu inventia, la o suspensie continînd cel mult 100 kg/m3 de material solid, se agauga acid sulfuric si/sau un amestec de acid mineral continînd cel putin 30% în greutate acid sulfuric, astfel încît concentratia de acid sa depaseasca 10% în greutate totala a namolului, iar pH-ul amestecului da fie sub 1 dupa terminarea tratamentului cu acid. reactia este reasizata la o temperatura între 20 si 100 degree C, sub agitare puternica. Lichidul acid continînd sarurile de metale grele este separat de namol, iar solutia este neutralizata; sarurile metalice se precipita, se purifica si namolul organic este spalat pîna la eliberarea totala de ionii metalici si de acid.The invention relates to a process for the removal of heavy metal compounds from the residual sludge resulting from tanning. In accordance with the invention, sulfuric acid and / or a mineral acid mixture containing at least 30% by weight sulfuric acid is sapped in a suspension containing at most 100 kg / m3 of solid material such that the acid concentration exceeds 10% of the total sludge, and the pH of the mixture is less than 1 after completion of the acid treatment. the reaction is reassembled at a temperature of between 20 and 100 degrees C under vigorous stirring. The acidic liquid containing the heavy metal salts is separated from the sludge and the solution is neutralized; metal salts precipitate, purify and organic sludge is washed until total release of metal and acid ions.

RO109659A 1982-01-14 1983-01-10 Process for removing heavy metal compounds from muds resulting from tanneries RO86780B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU82100A HU185194B (en) 1982-01-14 1982-01-14 Method for detoxication mixing tannery sewage sludges

Publications (2)

Publication Number Publication Date
RO86780A RO86780A (en) 1985-05-20
RO86780B true RO86780B (en) 1985-05-31

Family

ID=10947909

Family Applications (1)

Application Number Title Priority Date Filing Date
RO109659A RO86780B (en) 1982-01-14 1983-01-10 Process for removing heavy metal compounds from muds resulting from tanneries

Country Status (10)

Country Link
CS (1) CS246057B2 (en)
DD (1) DD209430A5 (en)
DE (1) DE3301120A1 (en)
ES (1) ES8402549A1 (en)
GB (1) GB2113199B (en)
HU (1) HU185194B (en)
IT (1) IT1160174B (en)
PL (1) PL139584B1 (en)
RO (1) RO86780B (en)
YU (1) YU6383A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428535A1 (en) * 1984-08-02 1986-02-13 Siekmann, Helmut E., Prof.Dr.-Ing., 1000 Berlin METHOD AND DEVICE, IN PARTICULAR FOR THE CONDITIONING OF SEWAGE SLUDGE
DE3503199C2 (en) * 1985-01-31 1987-03-19 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for producing a soil improver or a fertilizer from sewage sludge
DE3627253C2 (en) * 1986-08-12 1995-06-22 Linde Ag Process for the biological treatment of substrates containing organic substances
DE3919788C1 (en) * 1989-06-16 1990-07-05 Siebtechnik Gmbh, 4330 Muelheim, De
FI97288C (en) * 1993-08-26 1996-11-25 Kemira Oy Procedure for treatment of wastewater sludge
ITRM20010671A1 (en) * 2001-11-12 2003-05-12 Sicit Chemitech S P A CHROME-BASED PRODUCT IN COMPOSITION WITH HYDROLYZED PROTEINS AND PROCESS FOR ITS OBTAINING.
AU2003900241A0 (en) * 2003-01-21 2003-02-06 Australian Organic Resources Pty Ltd The extraction and treatment of heavy metals in sewage sludge
ITRM20050425A1 (en) * 2005-08-05 2007-02-06 Sicit Chemitech S P A PROCESS FOR THE PRODUCTION OF PRODUCTS BASED ON HYDRAULIC PROTEINS IN COMPOSITION WITH MANGANESE.
JP5985925B2 (en) * 2012-08-20 2016-09-06 水ｉｎｇ株式会社 Method and apparatus for treating waste liquid containing heavy metal

Also Published As

Publication number Publication date
DD209430A5 (en) 1984-05-09
PL139584B1 (en) 1987-02-28
GB2113199B (en) 1985-07-10
IT8319091A0 (en) 1983-01-13
GB8300987D0 (en) 1983-02-16
PL240123A1 (en) 1984-06-18
RO86780A (en) 1985-05-20
DE3301120A1 (en) 1983-07-28
GB2113199A (en) 1983-08-03
YU6383A (en) 1985-10-31
HU185194B (en) 1984-12-28
IT1160174B (en) 1987-03-04
ES518907A0 (en) 1984-03-01
CS246057B2 (en) 1986-10-16
ES8402549A1 (en) 1984-03-01

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