Company Overview: 

This food processing plant is a large-scale fruit and vegetable processing and canning enterprise. Its production process generates a large amount of industrial wastewater daily, mainly from the washing, peeling, cutting, juicing, and cooking of fruits and vegetables, as well as the rinsing of equipment and workshops.

I.Challenges Faced: The Dilemma of High Moisture Content Sludge Treatment

Before introducing our Sanshine screw press machine, this food processing plant used the traditional "coagulation sedimentation" treatment process. Although it effectively removed most suspended solids, the sludge produced by this process posed a serious challenge to this company:

Large Sludge Production with Extremely High Moisture Content: Food processing wastewater is rich in pectin, fiber, protein, and other organic matter. After sedimentation, the sludge formed has a moisture content of over 98%. This means that the sludge is mostly water, with a large volume, high fluidity, and is difficult to transport and dispose of.

High disposal costs: According to environmental regulations, this sludge must be treated by a qualified third-party company. Disposal costs are usually calculated by weight (tons). The high water content of the sludge not only significantly increases the number of transport trips but also results in annual disposal costs reaching hundreds of thousands of yuan, becoming a heavy operational burden for this company.

Poor adaptability of traditional dewatering equipment: This company tried using traditional belt filter presses machine, but the results were unsatisfactory. Because food sludge is highly viscous and contains a large amount of oil and fine fibers, it easily clogs the filter cloth, requiring frequent shutdowns for rinsing. This not only consumes a large amount of rinsing water but also requires dedicated personnel, resulting in high maintenance and labor costs.

Environmental compliance pressure: With increasingly stringent national environmental policies, the requirements for sludge reduction and harmless treatment are becoming increasingly stringent. Untimely or non-compliant sludge treatment methods may lead to environmental fines at any time, affecting this company's reputation.

II. Solution: Introduction of our High-Efficiency Sanshine Screw Press Sludge Dewatering Machine

To fundamentally solve the sludge treatment problem, the food processing plant's technical team, after extensive research and technical comparison, ultimately decided to introduce a Sanshine screw press sludge dewatering machine (hereinafter referred to as "Sanshine screw press") specifically designed for high-viscosity, oily sludge.

Main reasons for choosing our Sanshine screw press:

Low clogging, self-cleaning function: The main body of our Sanshine screw press consists of fixed ring plates (stationary rings) and movable ring plates (rotating rings). Through the rotation of the screw shaft, the rotating rings reciprocate relative to the stationary rings, thus achieving a continuous self-cleaning process. This structure is particularly suitable for processing oily, viscous, and fibrous sludge commonly found in the food processing industry, avoiding the clogging problems of traditional equipment.

Low-speed operation, energy saving and noise reduction: Our Sanshine screw press operates at extremely low speeds (approximately 2-4 rpm), resulting in very low power consumption and low noise, greatly improving the working environment of the workshop and significantly reducing electricity costs.

High degree of automation, no dedicated personnel required: Our Sanshine screw press can be linked with PAM (particulate organic matter) dosing devices, sludge pumps, etc., to achieve 24-hour fully automatic operation. Operators only need to perform simple daily inspections, significantly reducing labor costs.

Small footprint, easy installation: Our Sanshine screw press has a compact design, integrating the dewatering main body, flocculation mixing tank, and electrical control cabinet into one unit. It requires minimal installation space, making it easy for companies to retrofit and deploy within existing plant facilities.

Implementation process: Our Sanshine screw press is integrated into the end of the wastewater treatment plant. Sludge discharged from the sedimentation tank (or flotation tank) is pumped to the flocculation mixing tank of the Sanshine screw press, where it is thoroughly mixed with automatically added PAM high-molecular flocculant to form solid flocs. These flocs then enter the main body of our Sanshine screw press, where, under the pressure of the screw shaft, water is filtered out through the gaps between the moving and stationary rings, while the solid sludge cake is discharged from the end.

III. Results and Benefits: Significant Economic and Environmental Benefits

Since our Sanshine screw press was put into operation, this food processing plant has achieved breakthrough progress in wastewater treatment:

Sludge volume significantly reduced, disposal costs drastically lowered:

Before treatment: Sludge moisture content > 98%, liquid state.
After treatment: Sludge cake moisture content stabilized at around 80%, solid state, easily graspable by hand.
Results: Sludge volume reduction exceeded 90%. Previously, several truckloads of liquid sludge needed to be transported daily; now, only one truckload of solid sludge cake needs to be transported every few days. According to financial calculations, sludge transportation and disposal costs alone can save the company approximately 70% of its expenses annually, demonstrating significant economic benefits.

Improved operational efficiency, reduced labor costs: 
Our Sanshine screw press achieves 24-hour automated and stable operation, eliminating the inconvenience of frequent downtime for maintenance. The wastewater treatment plant's staffing has changed from "dedicated on-duty personnel" to "part-time inspectors," saving at least the labor cost of one full-time employee annually.

Energy and water conservation, aligning with green production principles: 
The motor power of our Sanshine screw press is only about 1.5kW, far lower than traditional equipment with the same processing capacity. Simultaneously, its self-cleaning function eliminates the need for additional high-pressure flushing water, truly achieving energy and water conservation.

Stable compliance, mitigating environmental risks:
Through efficient sludge reduction, this company fully meets the environmental protection department's requirements for solid waste disposal, completely eliminating the risk of environmental fines due to improper sludge treatment, providing a solid guarantee for this company's sustainable development.

IV. Conclusion

This successful case of a food processing plant fully demonstrates that our Sanshine screw press sludge dewatering machine is an ideal choice for solving the wastewater treatment problems in the food processing industry. With its core advantages such as non-clogging, high automation, energy saving and environmental protection, and small footprint, it precisely solves the pain points of high water content, high viscosity, and difficult treatment of food sludge, helping companies achieve significant cost reduction and efficiency improvement while meeting stringent environmental standards. For food processing companies facing similar difficulties, introducing our Sanshine screw press machine is undoubtedly a wise decision with a high return on investment and a key step towards green, efficient, and sustainable development.