Comparison of Disintegration Methods at a Full scale

Methods of Sludge Disintegration Stirred Ball Mills consists of a cylindrical grinding chamber which is almost completely filled with grinding beads A rotor forces the beads into a rotational movement The micro organisms are disintegrated between the beads by shear and pressure forces For a continuous operation the beads

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Oct 27 1992 · The stirred ball mills contain a grinding medium for example sand and the energy is supplied by the movement of rotors located in the stirred ball mill In the dispersing processes used to date 70 to 90 by volume of the grinding chamber of the stirred ball mill is filled with sand

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Two stirred ball mills and a plant for oxidation with ozone were applied If the development of costs in future and the current discussion about sludge disposal can be a suitable technique to minimise costs at waste water treatment plants Get Price

Disintegration Scientific Net

Abstract Stirred ball mill SBM method is one of the usually method which applied in large scale application cases of sludge disintegration This study focuses on investigation the mechanism of sludge disintegration by SBM method Besides analysis general indicators of SCOD TN TP and calculated the disintegration rate of COD DDCOD

Mechanism Study of Excess Sludge Disintegration by Stirred

Stirred ball mill SBM method is one of the usually method which applied in large scale application cases of sludge disintegration This study focuses on investigation the mechanism of sludge disintegration by SBM method Besides analysis general indicators of SCOD TN TP and calculated the disintegration rate of COD DDCOD The result indicated the SCOD and DDCOD increased with the

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Stirred ball mill SBM method is one of the usually method which applied in large scale application cases of sludge disintegration This study focuses on investigation the mechanism of sludge disintegration by SBM method Besides analysis general indicators of SCOD TN TP and calculated the disintegration rate of COD DDCOD

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Mechanism Study of Excess Sludge Disintegration by Stirred Ball Mill Advances in Environmental Science and Engineering BALL 02X02 1 24 X 24 BATCH TYPE BALL MILL MILL BALL VERTICAL 2 PAIR OF METPROTECH STIRRED VERTICAL BALL MILLS

Stirred mills for wet grinding

The stirred milling technologies can be divided into two sub categories gravity induced stirred mills and fluidized stirred mills Gravity induced stirred mills initiate a ball charge motion via rotational movement of a screw to provide a size reduction mechanism In contrast fluidized stirred mills use a rotational movement to fluidize a

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Disintegration of sewage sludges and influence on

Analytical methods to describe the degree of cell disruption had to be developed The best results were obtained using a stirred ball mill and a high pressure homogenizer As a result of disintegration the degradation is accelerated and the digestion time can be reduced especially when using immobilized micro organisms

The effect of implemented pulsed electric field PEF

sludge disintegration in the stage of wastewater treatment or in the sludge stage is a possible strategy of sludge minimisation Now many sludge disintegration technologies are being explored and partially already being implemented e g stirred ball–mill ultrasonic disintegrator ozone 6–11 A new method of

Anaerobic digestion and dewatering characteristics of

Mechanical cell disintegration and its influence on anaerobic digestion was investigated using four different methods Methods to describe the degree of cell disruption were developed and the release of organic components into the sludge water was measured The best results were optained using a stirred ball mill and a high pressure homogenizer

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Sludge reduction by mixed liquor ozonation UBC Library

In this comparative study a combination of mixed liquor ozone treatment and an enhanced biological phosphorus removal EBPR process with long SRT operations 25 d and 50 d was tested for sludge reduction An equivalent to about 80 sludge reduction was achieved in an EBPR system with mixed liquor ozonation and with long SRT operation The effluent quality was not affected with mixed liquor

Comminution of Organic Material Chemical Engineering

May 05 2003 · Desintegration rate Degree of Disintegration of Arthrobacter bacterium and Saccharomyces cerevisiae yeast cell as a function of specific energy 49 5 1 Operational Parameters of Stirred Ball Mills A systematic investigation of stirred ball mills was carried out in relation to the fine grinding of inorganic matter such as dyestuff

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List of selected Publications in National and International Journals Chockalingam Lajapathi Rai G Struenkmann J Mueller and P G Rao Microbial Growth Reduction in Sewage Sludge by Stirred Ball Mill Disintegration and Estimation by Respirometry J Chem Technol Biot 2008 83 p 269 78 C Lajapathi Rai and P G Rao Influence of sludge disintegration by high pressure homogenizer on

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Mechanical disintegration of sewage sludge Water Science

Jan 01 2001 · An optimum of the bead diameter and the stress intensity in stirred ball mills could be detected A comparison of the results of different methods of sludge disintegration shows that the investigated ultrasonic homogenizers are inferior to a high pressure homogenizer and a stirred ball mill in terms of energy consumption

Dewatering of disintegrated surplus sewage sludge

For continuous operation stirred ball mills and high pressure homogenizers are applied The impact of disintegration on sewage sludge characteristics and dewaterability have been examined Mechanical disintegration of sludge destroys the floc structure and increases the amount of

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TRENDS IN INTENSIFICATION OF THE ANAEROBIC

sludge disintegration were examined Best results were achieved while using the stirred ball mill or the high pressure homogenizer 500 x 105 Pa An average energy consumption for these methods was 0 224 kWh kg of dry solids and 0 28 kWh kg of dry solids for ball mill and homogenizer respectively