Apoaqua - Model ApoPro-DRS -Domestic Wastewater Sludge Dewatering Machine

The pollutants contained in domestic sewage are mainly a large number of pollutants. For example, a large number of pathogenic microorganisms (such as parasitic eggs and intestinal infectious viruses). The organic matter present in domestic sewage is extremely unstable and easily corrodes to produce odor. Bacteria and pathogens utilize organic matter in wastewater to multiply in large quantities, leading to the spread of infectious diseases. Domestic sewage contains a large amount of pollutants. Not only does it affect human health, but it also has a certain impact on the ecological environment. Therefore, domestic sewage must be treated before it can be discharged.

Domestic water treatment processes generally produce aqueous sludge of different properties. Sludge dehydration equipment mainly reduces the moisture contained in sludge and reduces the moisture content. Reduce the volume of sludge and facilitate subsequent treatment or disposal of sludge. Sludge dewatering equipment can generally be divided into belt dewatering machines, centrifugal dewatering machines, plate and frame filter presses and sludge dewatering equipment.

At present, belt dehydrators have problems such as large water consumption and high operating requirements. The wastewater sludge dewatering machine is rapidly being recognized and accepted by the market with its advantages of energy saving, stability, and high degree of automation.

how to dewater domestic wastewater sludge?

After being concentrated by gravity in the concentration section, the domestic sludge is transported to the dehydration section. In the process of advancement, the filter gaps and pitch gradually become smaller. And under the blocking action of the back pressure plate, great pressure is generated, and the volume is continuously reduced to achieve the purpose of full dehydration.

• The four-section segmented design of the stacked screw body can withstand greater torque. It is not easy to deform, which can avoid the friction between the spiral shaft and the fixed ring and the support plate after large deformation, which will shorten the service life of the spiral shaft.
• The first-level concentration section uses large gap finishing gaskets to ensure the rapid passage of filtrate. 
• The secondary concentration section uses medium gap finishing gaskets. While ensuring the rapid passage of filtrate, it prevents the passage of flocculated sludge.
• The third and fourth-stage dehydration sections use small gap finishing gaskets. It prevents the flocculated sludge from passing through and reduces the amount of sludge running while allowing the filtrate to pass through. Maximize the rapid passage of filtrate while reducing the amount of flocculated sludge.
• The elastic back-pressure mechanism can self-adjust the mud discharge gap according to the inner cavity pressure. This avoids premature damage to the screw shaft and moving ring caused by excessive internal pressure and prolongs the service life of the equipment.
• When the pressure in the inner cavity increases, the back pressure plate moves backward, and the mud outlet gap becomes larger, so that the internal pressure is released. When the pressure in the inner cavity becomes smaller, the back pressure plate moves forward, and the mud outlet gap becomes smaller, which increases the internal pressure and ensures the dryness of the mud outlet.
• Spiral shaft: overall finishing after welding. The surface of the spiral blade adopts supersonic spray tungsten carbide surface hardening process.
• Ring piece: It is laser cut as a whole and mechanically leveled after cutting.
• Gasket: turning finishing, dimensional accuracy ±0.02.