ค้อนบด

Sludge Disintegration With Stirred Ball Mills. Various sludge disintegration technologies for sludge minimization are discussed including mechanical methods focusing on stirred ballmill high. Small Ball Mills For Sale From E U.

Mill Type. Ball Mill. Vertimill® SMD. 100000. 10000. 1000. 100. 10. Microns. 1. Ball Mills and stirred mills are applied across a wide range of applications, but for each ore there is optimum ...

Breaking down sludge floc (sonodyspergation effect) and destruction of the cell membranes of microorganisms forming floc is a direct effect of ultrasonic disintegration of sludge excess. This results in release of organic material by liquid sludge (the sonolysis effect). Desired technological effects of the disintegration are: to shorten the hydrolytic phase of …

reviewed and compared current biosolids and sludge disintegration technologies, including mechanical, chemical, thermochemical, biological, and oxidative processes. Four mechanical cell disinte gration techniques were tested by Kopp et al. (1997). Stirred ball mills and high-pressure homogenizers had the best performance

The resources of excess sludge exist in zoogloea and bacteria cells.Excess sludge disintegration technique enables the full release of the organic matter in sludge, so that nutrients, energy and other resources in sludge can be fully recycled, meanwhile, the reduction of sludge solids matter can be achieved.Excess sludge disintegration is necessary …

Stirred ball mills Ultrasonic homogenizers High performance pulses Lysat centrifuge Gamma irradiation ... Crown® Disintegration System SLUDGE THICKENER DIGESTER DISCHARGE PUMP DISINTEGRATION NOZZLE MACERATOR PRESURIZATION ... After AD of mixed sludge 6/7 samples are free of E. coli and 3/7 samples are salmonella free.

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.

Ball mill shakers were reported to efficiently disintegrate activated sludge micro-organisms but they are quite energy intensive : sludge breaking yields of 90% consumed 60 MJ kg~1 TDS.16 The disintegration of bacterial cell walls by an agitator ball mill was studied in detail by Kunz et al.17 Sludge was pressed through a cylindrical or conical ...

An agitator ball mill for finely grinding or dispersing material has a cylindrical or conical grinding chamber for accommodating grinding bodies and for accommodating the material which is to be ground or dispersed. It also has an inlet, which is arranged at one end of the grinding chamber, an agitator, which extends in the axial direction into the grinding chamber and has agitating …

There is a method for the mechanical disintegration of biogenic sewage sludge, for which the sewage sludge, in an initial state, has microorganisms in the form of cells and a solid, which is formed essentially from aggregates of cells and suspended materials, and for which a disintegration process (3, 4) causes a destruction of aggregates and a destruction of cells.

Mechanical Disintegration Of Sewage Sludge. 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.

complex organic compounds, such as waste-activated sludge (WAS). The aim of lab-scale experiments was to pre-hydrolyze the sludge by means of low intensive alkaline sludge conditioning before applying hydrodynamic disinte-gration, as the pre-treatment procedure. Application of both processes as a hybrid disintegration sludge technology result-

Ball mill is a cylinder rotating at about 70-80 of critical speed on two trunnions in white metal bearings or slide shoe bearings for large capacity mills.Vrm Vs Ball Mill For Cement Grinding - Page 1 Of 1. Feb 10, 2016 planning to put up a new cement grinding plant using vertical roller mill(300-350 – tph) and before implementing the project

The stirred ball mill is regarded as one of the most efficient devices for micronizing coal. Using a 13.4 cm batch mill, the optimum operating conditions have been determined in terms of media size, feed size and media type. The rate of breakage determined with monosized feeds are compared on the basis of specific energy consumption.

Stirred ball mills and high pressure homogenizers were used for sludge disintegration by Muller (2000), to produce a carbon. 4 source for denitrification. According to their experiments the maximum denitrification rate was up to 15 mg NO 3-N g …

Mechanically disintegrated excess sludge J3J The excess sludge was disintegrated by a stirred ball mill (Netzsch, type LME 4) and a high-pressure homogenizer (APV-Gaulin, LAB 60), an ultrasonic homogenizer (B.Braun, Labsonic L) and a shear-gap homogenizer (IKA, Ultra T~rrax T2S).

disintegration and ozonation of excess sludge showed accelerated anaerobic digestion.11 Besides mechanical disintegration and ozonation, other methods, e.g. oxidation, thermal, chemical and thermochemical pretreatment methods are also used to improve sludge digestibility.12–14 Stirred ball mill method Experimental investigations using SBM ...

liquefL solids as much as possible. Different disintegrating devices, mechanical as stirred ball mills, homogenizers, ultra-sound and other systems can be introduced in sludge treatment technology line after thickening of waste activated sludge, even can be directly integrated into thickening machine (lysate centrifuge). (Dohanyos at al., 1997)

The grinding energy consumption of 30-40 kW hr/ton is competitive with that of small ball mills. Unlike ball mills, the KDS machine reuses that grinding energy to dry the coal, hence is actually more efficient. With the KDS Micronex™, it is possible to increase the value of lower grade coals which have limited use at present.

Various half-scale and lab-scale investigations have already shown that the disintegration of excess sludge is a possible pre-treatment to optimise anaerobic digestion. To control these results different methods of disintegration were investigated at a full-scale plant. Two stirred ball mills and a plant for oxidation with ozone were applied.

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.

78 Mechanical sludge disintegration methods are generally based on the disruption 79 of microbial cell walls by shear stress. Stirred ball mills, high pressure homogenisers 80 and mechanical jet smash techniques have been used for mechanical pre-treatment 81 application although the most used technique is sludge sonication [6-10].

Mechanical sludge disintegration methods are generally based on the disruption of microbial cell walls by shear stresses. Stirred ball mills, high pressure homogenisers and mechanical jet smash techniques have been used for mechanical treatment application although the most used technique is sludge sonication [5,7]. Sonication is a combination

Jun 03, · Abstract The stirred ball mill (SBM) method is a common method applied in largescale sludge disintegration. Many reports focus on the disintegration results of sludge or the influence of parameters on the anaerobic process of treated sludge, but there have been few studies on the mechanism of sludge disintegration by SBM.

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 …

Mechanical sludge disintegration for the production of . These methods include mechanical disruption via the mill process [5], a spider deflaker homogenizer [6] and the stirred ball mill (SBM) method [7], physicochemical disruption via . Get Price

UNIVERSITE DE LIMOGES Ecole Doctorale Sciences, Technologie, Santé Laboratoire des Sciences de l'Eau et de l'Environnement N° [68-2008] THESE

US9216418B2 US13/902,396 US201313902396A US9216418B2 US 9216418 B2 US9216418 B2 US 9216418B2 US 201313902396 A US201313902396 A US 201313902396A US 9216418 B2 US9216418 B2 US 9216418B2 Authority US United States Prior art keywords grinding ball mill container grinding bodies auxiliary Prior art date Legal status (The legal status is …

In our study we applied hydrodynamic cavitation and ozonation both separately and combined, to determine the synergistic effect of these two technologies for sludge disintegration. A 2 mm orifice was used as a cavitation device. Ozone was injected after cavitation at a concentration of 35 mg/L at a flow of 3 Lpm. The sludge was subjected to treatment for 90 minutes in all three …

Microbial growth reduction in sewage sludge by stirred ... - Core . sludge by stirred ball mill disintegration ... Division, Central Leather Research Institute, Adyar, Chennai 6000 20, India ...

A ball mill, a type of grinder, is a cylindrical device used in grinding (or mixing) materials like ores, chemicals, ceramic raw materials and paints.Ball mills rotate around a horizontal axis, partially filled with the material to be ground plus the grinding medium. Different materials are used as media, including ceramic balls, flint pebbles ...

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).

Various sludge disintegration technologies for sludge minimization are discussed, including mechanical methods (focusing on stirred ball-mill, high …

The excess sludge was disintegrated by a stirred ball mill (Netzsch, LME 4), a high-pressure homogenizer (APY-Gaulin, LAB 60), an ultrasonic homogenizer (B. Braun, Labsonic L) and a shear-gap homogenizer (lKA, Ultra Turrax T25). The excess sludge was treated with different operational parameters.

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.