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    METHOD OF DEWATERING SEWAGE SLUDGE IN FILTER PRESSES
    11.
    发明专利
    METHOD OF DEWATERING SEWAGE SLUDGE IN FILTER PRESSES 未知

    公开(公告)号：DE3162983D1

    公开(公告)日：1984-05-10

    申请号：DE3162983

    申请日：1981-10-12

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR ,  LAUER HERBERT DR ,  NEUWIRTH MANFRED

    IPC: B01D25/12 ,  B01D37/00 ,  B01D37/03 ,  C02F11/12 ,  C02F11/14

    Abstract: 1. A multistage process for dewatering sewage sludges by mixing these homogeneously with inert additives, such as finely divided coal or ash or mixtures thereof, adding organic flocculants, removing the greater part of the water, in a first dewatering step, by gravity filtration without applying a pressure differential and then effecting further dewatering in a second dewatering step, by pressure filtration on filter presses, in order to obtain filter cakes which can be combusted, with the utilization of their calorific content, wherein the additives, such as finely divided coal or ash or mixtures thereof, are added in an amount of from 0.5 to 1.5 parts by weight per part by weight of sludge solids and from 1 to 7 kg of organic flocculant/tonne of sludge solids is added to the sewage sludges before or during admixture of the additives.

    12.
    发明专利
    未知

    公开(公告)号：DE2038908A1

    公开(公告)日：1972-02-10

    申请号：DE2038908

    申请日：1970-08-05

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR

    IPC: C08G2/00 ,  C08G1/04

    Abstract: 1350955 Tertiary butyl perchlorate BADISCHE ANILIN- & SODA-FABRIK AG 4 Aug 1971 [5 Aug 1970] 36548/71 Heading C2C [Also in Division C3] Tertiary butyl perchlorate is prepared in the usual manner from AgClO 4 and t-C 4 H 9 Cl, but using as solvent mono- or di-ethylene glycol dimethyl ether or ethylene chloride. It is employed as a catalyst in the polymerization of trioxane.

    18.
    发明专利
    未知

    公开(公告)号：DE59100367D1

    公开(公告)日：1993-10-21

    申请号：DE59100367

    申请日：1991-01-26

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR ,  MARQUARDT SIEGFRIED ,  KEMPE UWE DR ,  VODRAZKA WOLFGANG DR ,  LUETH GERO DR

    IPC: B01D37/03 ,  C02F1/54 ,  C02F9/00 ,  C02F11/10 ,  C02F11/12 ,  C02F11/14 ,  C10L5/40

    Abstract: Process for the utilisation of soot, arising in the production of synthesis gas in the form of soot-containing waste water, characterised in that, in a sewage sludge treatment plant, the soot-containing waste water a) is mixed with a clarified sludge, to which are added organic flocculating agents as dewatering aids and to which, if required, are added still further amounts of finely particulate coals and/or ashes, b) this pretreated sludge mixture is subjected to filtration c) the filter cake obtained is incinerated and d) the ash is deposited in a supervised landfill.

    19.
    发明专利
    未知

    公开(公告)号：DE4003242A1

    公开(公告)日：1991-08-08

    申请号：DE4003242

    申请日：1990-02-03

    Applicant: BASF AG

    Inventor： SANDER BRUNO DR ,  MARQUARDT SIEGFRIED ,  KEMPE UWE DR ,  VODRAZKA WOLFGANG DR ,  LUETH GERO DR

    IPC: B01D37/03 ,  C02F1/54 ,  C02F9/00 ,  C02F11/10 ,  C02F11/12 ,  C02F11/14 ,  C10L5/40

    Abstract: Process for the utilisation of soot, arising in the production of synthesis gas in the form of soot-containing waste water, characterised in that, in a sewage sludge treatment plant, the soot-containing waste water a) is mixed with a clarified sludge, to which are added organic flocculating agents as dewatering aids and to which, if required, are added still further amounts of finely particulate coals and/or ashes, b) this pretreated sludge mixture is subjected to filtration c) the filter cake obtained is incinerated and d) the ash is deposited in a supervised landfill.

    20.
    发明专利
    未知

    公开(公告)号：DE3528598A1

    公开(公告)日：1987-02-19

    申请号：DE3528598

    申请日：1985-08-09

    Applicant: BASF AG

    Inventor： GETTERT HANS DR ,  KAEMPFER KNUT DR ,  SANDER BRUNO DR ,  MARQUARDT SIEGFRIED ,  MUELLER K ROBERT DR

    IPC: B01D37/03 ,  C02F1/54 ,  C02F11/00 ,  C02F11/12 ,  B01D23/00

    Abstract: Wastewaters which contain carbon black and ash and originate from high temperature processes and in which the carbon black is present in a very finely divided state and partially in a colloidal state are treated and disposed of by a process in which the wastewater is treated with calcium carbonate or calcium hydroxide and an organic flocculant and subjected to a two-stage filtration and the resulting filter cake containing carbon black and ash is subjected to an aftertreatment with an aqueous iron salt solution.

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