Project Background: A large-scale printing and dyeing enterprise in Shandong generates mixed sludge with a moisture content of approximately 98% on a daily basis. The original process employed traditional lime and iron salt treatment, which had issues such as high chemical consumption, sticky sludge, easy clogging of filter cloth, and a moisture content that remained at 75%-80% and was difficult to further reduce. Moreover, the amount of sludge generated was huge, and the subsequent incineration disposal cost was high.

Solution: After the technical team of Works Co., Ltd. got involved, they did not directly recommend a single product. Instead, they first conducted a one-week analysis of the physical and chemical properties of the sludge samples. Considering the high organic content and high viscosity of the sludge in this plant, we proposed a modified solution mainly using the SJC-08 type deep sludge dehydration enhancer, replacing some of the traditional inorganic conditioning agents.

Implementation effect (based on actual operational data):

Water content variation: After the adjustment, the average water content of the sludge cake after plate and frame filtration was stable within the range of 58% - 62%, which was approximately 15 - 20 percentage points lower than that before the renovation, meeting the basic standards for landfilling and co-incineration.

2. Chemical consumption cost: Although the unit price of the new sludge enhancer is higher than that of lime, the dosage is significantly reduced (only 1/3 to 1/4 of the traditional process), and the amount of lime residue is also decreased. As a result, the overall cost per ton of sludge treated has decreased by approximately 18%.

3. Operational efficiency: The sludge cake stripping performance has significantly improved, and it no longer adheres to the filter cloth. The single batch filtration cycle has been shortened by approximately 15%, thereby enhancing the processing capacity of the equipment.

Customer feedback: "The effect is real, but not as 'magical' as advertised. During the initial debugging, there were also fluctuations. However, with the on-site guidance of the Works technicians, by fine-tuning the pH value and the mixing time, the system quickly returned to stability. For us, achieving stable performance is more valuable than the occasional occurrence of extremely low moisture content."

This project once again demonstrates that scientific selection and meticulous operation are the key to the success of sludge dewatering.