ES2063682A1 - Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias. - Google Patents

Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias.

Info

Publication number
ES2063682A1
ES2063682A1 ES9300270A ES9300270A ES2063682A1 ES 2063682 A1 ES2063682 A1 ES 2063682A1 ES 9300270 A ES9300270 A ES 9300270A ES 9300270 A ES9300270 A ES 9300270A ES 2063682 A1 ES2063682 A1 ES 2063682A1
Authority
ES
Spain
Prior art keywords
solution
chromium
procedure
reactor
tannery
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
ES9300270A
Other languages
English (en)
Other versions
ES2063682B1 (es
Inventor
La Cuadra Herrera Antonio De
Amezaga Sebastian Amer
Martin Angel Luis
Gil Jose L Limpo
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.)
INGENIERIA DE PLANIFICACION Y
Original Assignee
INGENIERIA DE PLANIFICACION Y
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 INGENIERIA DE PLANIFICACION Y filed Critical INGENIERIA DE PLANIFICACION Y
Priority to ES9300270A priority Critical patent/ES2063682B1/es
Priority to EP94906933A priority patent/EP0637570B1/en
Priority to DE69412728T priority patent/DE69412728T2/de
Priority to AT94906933T priority patent/ATE170163T1/de
Priority to PCT/ES1994/000013 priority patent/WO1994018133A1/es
Publication of ES2063682A1 publication Critical patent/ES2063682A1/es
Application granted granted Critical
Publication of ES2063682B1 publication Critical patent/ES2063682B1/es
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

PROCEDIMIENTO PARA LA ELIMINACION DE CROMO DE LAS AGUAS RESIDUALES DE TENERIAS. EL PROCEDIMIENTO CONSISTE EN LA PRECIPITACION DEL CR(III) MEDIANTE HIDROXIDO DE MAGNESIO PERO CON LA PARTICULARIDAD DE QUE LA SOLUCION CONTENIENDO EL CROMO SE AÑADE LENTAMENTE Y DE FORMA CONTINUA SOBRE OTRA SOLUCION, QUE SE MANTIENE A UNA TEMPERATURA SUPERIOR A 55 C (PREFERENTEMENTE 60 C), A LA QUE TAMBIEN SE AÑADE DE FORMA CONTINUA EL HIDROXIDO (O MEJOR EL OXIDO) DE MAGNESIO O UNA MEZCLA DE ESTE PRODUCTO E HIDROXIDO SODICO. ESTA OPERACION SE REALIZA EN UN REACTOR COMPARTIMENTADO EN EL QUE EL TIEMPO DE RESIDENCIA DE LA SOLUCION EN CADA UNO DE LOS COMPARTIMENTOS ES DE 2 A 4 HORAS, DEPENDIENDO DEL CONTENIDO DE COMPLEJANTES DEL CR(III) EN LA SOLUCION A TRATAR. LA PULPA QUE SALE DEL REACTOR PASA A UN DECANTADOR CUYO REBOSE ES LA SOLUCION DEPURADA. EL PRODUCTO ESPESO PUEDE LLEVARSE A UN REACTOR DONDE MEDIANTE ACIDO SULFURICO SE REDISUELVE PARA OBTENER UNA SOLUCION ACIDA QUE CONVENIENTEMENTE NEUTRALIZADA PUEDE VOLVERA EMPLEARSE EN LA PROPIA TENERIA.
ES9300270A 1993-02-11 1993-02-11 Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias. Expired - Fee Related ES2063682B1 (es)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES9300270A ES2063682B1 (es) 1993-02-11 1993-02-11 Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias.
EP94906933A EP0637570B1 (en) 1993-02-11 1994-02-11 Treatment of solid and liquid effluents from tan-yards for removing and recovering the chromium contained in the effluents
DE69412728T DE69412728T2 (de) 1993-02-11 1994-02-11 Behandlung von gerbereiabwässern und suspensionen zum entfernen und wiedergewinnen von chrom
AT94906933T ATE170163T1 (de) 1993-02-11 1994-02-11 Behandlung von gerbereiabwässern und suspensionen zum entfernen und wiedergewinnen von chrom
PCT/ES1994/000013 WO1994018133A1 (es) 1993-02-11 1994-02-11 Tratamiento de efluentes solidos y liquidos de tenerias para la eliminacion y recuperacion del cromo contenido

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES9300270A ES2063682B1 (es) 1993-02-11 1993-02-11 Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias.

Publications (2)

Publication Number Publication Date
ES2063682A1 true ES2063682A1 (es) 1995-01-01
ES2063682B1 ES2063682B1 (es) 1996-04-01

Family

ID=8280766

Family Applications (1)

Application Number Title Priority Date Filing Date
ES9300270A Expired - Fee Related ES2063682B1 (es) 1993-02-11 1993-02-11 Procedimiento para la eliminacion de cromo de las aguas residuales de tenerias.

Country Status (1)

Country Link
ES (1) ES2063682B1 (es)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8201211A1 (es) * 1980-02-19 1981-12-01 Campomarzio Impianti Srl Un metodo con su instalacion de realizacion para recuperar de forma continua el cromo trivalente de aguas residuales deteneria
US4560546A (en) * 1980-05-12 1985-12-24 Luigi Stoppani S.P.A. Chromium hydroxide precipitate obtained by a continuous process for the removal of chromium from waste waters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES8201211A1 (es) * 1980-02-19 1981-12-01 Campomarzio Impianti Srl Un metodo con su instalacion de realizacion para recuperar de forma continua el cromo trivalente de aguas residuales deteneria
US4560546A (en) * 1980-05-12 1985-12-24 Luigi Stoppani S.P.A. Chromium hydroxide precipitate obtained by a continuous process for the removal of chromium from waste waters

Also Published As

Publication number Publication date
ES2063682B1 (es) 1996-04-01

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Legal Events

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FD2A Announcement of lapse in spain

Effective date: 20180806