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        Your position:Home > Products > Sludge Disposal

        Heavy metal Sludge Drying

        Raw Material: metal sludge
        Moisture content: 35% to 95%
        Application range: can be applied to disposing active sludge disposal, paper sludge disposal, dyeing sludge disposal, coal washing factory, sewage factory, electroplating sludge and chemical pharmaceutical sludge. 

        Sales Hotline:

        0086-18539990967

        Technical introduction

        With the development of urbanization, emission load of municipal and industrial sewage becomes more and more. The output of side products of sludge disposal becomes more and more accordingly. The composition of sludge is complex and the moisture of sludge is pretty high. There is a lot of organic pollutants, harmful heavy metals and microorganism which are difficult to degrade. The health, development and surviving of human are threatened seriously. It is proved that using sludge as a kind of resource is a very necessary way to treat sludge. However, more than half heavy metal will be transmitted into sludge in the disposal process. The heavy metal seriously hinders the reclamation of sludge. If the sludge with high heavy metal content is applied to agriculture, the heavy metal content of crop will be increased accordingly. Also, it will lead to heavy metal pollution to soil. If the sludge containing much heavy metals  is applied to agricultural field, not only increase the heavy metal content of crops in the body, but also heavy metals in soil contamination, when there is rain, some heavy metals in soil and sludge into surface runoff and subsurface flow and migrate with the water, and then to groundwater cause secondary pollution. Heavy metals contained in the sludge also has an adverse impact on the engineering properties of the cured body, Minocha other studies have shown that when the sludge was added to the Zn concentration of 5%, the curing of the sample 28d compressive strength is reduced to the control sample 30% when the concentration of Zn up to 8%, the 28d compressive strength of only 15% of the control sample. The study also shows that heavy metals in the sludge adversely affect the development of sludge solidified body strength. In summary, how to deal with heavy metals become sludge treatment and disposal must be addressed.

        Advantages

        1. High thermal efficiency and low drying cost
        New internal structure, and strengthen the cleaning material dispersion and heat transfer effect; eliminate the cylinder wall adhesion phenomenon, material moisture, sticky and adaptable to increase the heat exchange area, to improve the drying efficiency. Operating parameters can be changed according to different materials, the entire drying system uses frequency control, so that the material in the dryer heat exchange more fully, than the average coal consumption and power consumption reduced by more than 20-25% of the dryer. Coal drying system from feeding to discharge procedure, run the fully sealed to prevent cold air into the system to improve heat utilization, to ensure product quality and stability.
        2. Reliably running and good stability
        New feeding and nesting devices put an end to the dryer feed blockage, discontinuous, uneven, and returning materials phenomenon. Drying machine "aligning type tugs means" to make tugs and rolling circle with linear contact was never greatly reduce the wear and power consumption. Dryer to achieve "zero level thrust" greatly reduces gear wear the roller, cylinder run more stable and reliable.
        3. Wide range of heat source and no pollution
        Fuel can be used coal, oil, natural gas, liquefied petroleum gas. According to the material requirements and the local natural advantages may be, improve production efficiency and economic benefits. The company new product gas furnace, biomass combustion furnace for heat carrier: energy-saving environmental health and safety, non-polluting materials after drying, high thermal efficiency, energy saving than the burner at more than 30%, an operator can, without circulation stoker can with the stop with the use.
        4. High level automation and supervise production concurrently
        The entire system uses PLC automatic control, the system includes advanced testing equipment: temperature detection, pressure testing, temperature adjustment (may be required at any time to adjust according to the material), automatic fault alarm, automatic protection shut-down of industrial TV monitoring system: production status, post production monitor, control and making drying equipment to better meet relevant requirements. 

        Working principle

        The drying process can be divided into three parts:
        Materials guiding stage: Wet sludge in this area in contact with the high-temperature hot air rapid evaporation of water, after large lead angle of the copy board copy move (to avoid bonding) into the next work area;
        Diffusion stage: Chunks of wet sludge in this area by means broken into small pieces break even powder, greatly increasing the slime and hot air heat exchange area;
        Inclined lifting plate stage: After breaking, wet sludge is raised in this area by the lifting plate, and form a material curtain. At the same time the material full contact with the hot, wet slime in evaporation and water vapor formed by the induced draft fan pulled out, the purpose of drying; prone to bonding roller wall phenomenon when material falls, so a cleaning device is specially set; low moisture loose slime water by heat exchange to achieve the desired state, into the discharge zone;
        Discharge stage: Drum no copy board in this area, the material rolling glide in this area to the discharge opening, to complete the drying process.

        Technical parameters

        Model Drum diameter (mm) Drum length (mm) Drum volume (m3) Rotary speed (r/min) Power(kW) Weight (t)
        HG0.6×6 600 6000 1.7 1-8 3 2.9
        HG0.8×8 800 8000 4 1-8 4 3.5
        HG1×10 1000 10000 7.9 1-8 5.5 6.4
        HG1.2×6 1200 6000 6.8 1-6 5.5 6.7
        HG1.2×8 1200 8000 9 1-6 5.5 8.5
        HG1.2×10 1200 10000 11.3 1-6 7.5 10.7
        HG1.2×12 1200 12000 13.6 1-6 7.5 12.5
        HG1.5×8 1500 8000 14.1 1-5 11 14.8
        HG1.5×10 1500 10000 17.7 1-5 11 16
        HG1.5×12 1500 12000 21.2 1-5 15 17.8
        HG1.5×15 1500 15000 26.5 1-5 15 19.2
        HG1.8×10 1800 10000 25.5 1-5 15 18.1
        HG1.8×12 1800 12000 30.6 1-5 18.5 21
        HG1.8×15 1800 15000 38.2 1-5 18.5 26.3
        HG1.8×18 1800 18000 45.8 1-5 22 31.2
        HG2.2×12 2200 12000 45.6 1-4 22 31
        HG2.2×15 2200 15000 53.2 1-4 30 36.2
        HG2.2×18 2200 18000 68.4 1-4 30 43.3
        HG2.2×20 2200 20000 76 1-4 30 48.8
        HG2.4×15 2400 15000 67.9 1-4 30 43.7
        HG2.4×18 2400 18000 81.4 1-4 37 53
        HG2.4×20 2400 20000 90.5 1-4 37 60.5
        HG2.4×24 2400 24000 108.6 1-4 45 69.8
        HG2.8×18 2800 18000 110.8 1-4 45 71.6
        HG2.8×20 2800 20000 123.2 1-3 55 76.8
        HG2.8×24 2800 24000 147.8 1-3 55 85
        HG2.8×28 2800 28000 172.4 1-3 75 95
        HG3×20 3000 20000 141.4 1-3 55 87
        HG3×24 3000 24000 169.7 1-3 75 105
        HG3×28 3000 28000 198 1-3 90 123
        HG3.2×24 3200 24000 193 1-3 90 120
        HG3.2×28 3200 28000 225.2 1-3 90 140
         

        Relevant cases

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        Sludge Reclamation

        Matching Device

        Sales hotline:0086-18539990967

        Address of headquarters:NO. 198, longding industrial zone, high-tech development zone, zhengzhou city, china

        Email:vip@tdaxy.com

        Zhengzhou Taida Group    Address:NO. 198,longding industrial zone,high-tech development zone,zhengzhou city,china    Sitemap

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