Recently, Franklin Food Company in the United States was fined $265,000 for its non-compliant wastewater treatment during dairy product production. The company had repeatedly violated environmental regulations as early as 2015 and 2018, with recurring issues such as abnormal pH values of wastewater, excessive phosphorus content, and failure of the wastewater sampling system. Even though it formulated a rectification plan, it failed to completely solve the problem and ultimately crossed the red line of environmental protection regulations again. As a professional cream cheese and dairy product processing enterprise, its wastewater treatment loopholes have also served as a warning bell for the global food processing industry: Improving the wastewater pre-treatment system and selecting high-performance filtration consumables are the key to enterprises maintaining the bottom line of environmental compliance.
The wastewater from food and dairy product processing is complex in composition, containing a large amount of milk proteins, oils, phosphates, etc. The water quality has large fluctuations in acidity and alkalinity, and the pollutants are highly adhesive. This poses strict requirements for the corrosion resistance, filtration capacity, and anti-blocking performance of the filtration equipment and folding filter cartridge. The core problem of Franklin Food's repeated violations lies in the rudimentary front-end filtration process. Ordinary filtration products cannot intercept fine colloids, suspended impurities, and bound phosphorus. This not only causes the effluent to exceed the indicators but also easily clogs the sampling pipeline, preventing normal wastewater sampling monitoring and creating a continuous violation risk. To solve these problems at the source, PVDF folded filter elements have become the preferred solution for wastewater pre-treatment in the food industry.
The PVDF material itself has excellent acid and alkali resistance and chemical corrosion resistance, which can adapt to the wide pH fluctuation conditions of dairy wastewater. It is not prone to deformation or damage during long-term use and perfectly matches the complex water quality environment of food production wastewater. Compared with traditional polypropylene pleated filter cartridge, PVDF folded filter elements adopt a folded structure, having a larger filtration area and stronger filtration capacity. They can efficiently intercept fine suspended solids, emulsified oils, milk protein colloids, and particulate phosphorus pollutants, significantly reducing the total phosphorus content in the effluent and stabilizing the water quality indicators.
In the wastewater sampling and online monitoring process, the advantages of pleated membrane filter cartridge are particularly prominent. They can be installed in the sampling pipeline and the front end of the online monitoring equipment, forming a precise protective layer that effectively blocks viscous impurities from blocking the probe and pipeline, ensuring the continuous and stable operation of wastewater sampling monitoring and completely eliminating violations such as "no wastewater sampling". At the same time, pp pleated filter cartridge has food-grade safety certification and no harmful substances are released, suitable for the entire food production chain, including dairy products and sauces, and complies with the water supply and environmental protection standards of multiple countries.
For large food enterprises with multiple production bases and long-term operation, a compliant wastewater treatment system is the cornerstone for the sustainable development of the enterprise. By building a multi-level filtration pre-treatment system using PVDF folded filter elements and combining with water quality online monitoring equipment, it can not only stabilize the control of core indicators such as pH value and phosphorus content but also ensure the normal operation of the monitoring system, effectively avoiding pollution penalties at the source. Many manufacturers also choose to match PP filter cartridge for auxiliary filtration to further optimize the overall treatment effect.
Nowadays, environmental protection supervision is becoming increasingly strict. Food processing enterprises can only upgrade their filtration processes, select high-performance filtration products, and fulfill the requirements of wastewater pre-treatment to protect the water environment and achieve the coordinated development of production and ecological protection.