The sewage treatment process involves a range of economic, scientific, and effective methods designed to manage urban domestic wastewater and industrial effluents. These processes can be broadly categorized into physical, chemical, physicochemical, and biological methods. **Physical Methods**: These involve mechanical or physical separation techniques such as filtration, sedimentation, centrifugation, and flotation. They are typically used for removing suspended solids and large particles from the water. **Chemical Methods**: This approach uses chemical reactions to neutralize, oxidize, reduce, or precipitate harmful substances in wastewater. Common techniques include neutralization, oxidation, reduction, coagulation, and chemical precipitation. **Physicochemical Methods (Internal Electrolysis)**: These combine physical and chemical processes to remove contaminants. Techniques such as stripping, adsorption, ion exchange, and reverse osmosis are commonly used. Internal electrolysis is particularly effective for treating complex organic pollutants. **Biological Methods**: These rely on microorganisms to break down organic matter through metabolic processes. Common systems include activated sludge, biofilters, oxidation ponds, and anaerobic digestion. **Internal Electrolysis Technology**: This is an advanced method for treating high-concentration and hard-to-degrade organic pollutants. It works by generating a 1.2-volt potential difference without external power. When connected to wastewater, the system forms multiple galvanic cells that create electric fields, enabling efficient electrochemical degradation of pollutants. **Weifang Puyin Runrun Iron-Carbon Filler – Key Innovations**: (1) Multi-metal alloy is formed via high-temperature melting, ensuring continuous "primary battery" efficiency. Unlike physical mixing, this prevents electrode separation, maintaining consistent performance. (2) The microporous structure provides a large surface area and uniform flow channels, enhancing current density and catalytic activity. (3) High reactivity, low specific gravity, no passivation, and no compaction ensure fast reaction rates and long-term stability. (4) Customizable catalyst ratios allow for optimized performance across different types of wastewater. (5) During operation, active iron acts as an anode, releasing electrons and dissolving into the water, while carbon particles are carried away. The filler can be easily replenished, reducing maintenance workload. (6) The process integrates multiple mechanisms: oxidation, reduction, electrodeposition, flocculation, adsorption, and co-precipitation. (7) Low cost, high efficiency, and improved biodegradability make it ideal for removing organic pollutants. (8) Flexible design allows for custom equipment based on project scale and client needs. (9) Standard size: 1cm x 3cm. (10) Technical specifications: Specific gravity 1.1 tons/m³, specific surface area 1.2 m²/g, void ratio 65%, physical strength ≥1000 kg/cm². **Company Commitment**: (1) All samples come directly from our factory, with customers able to keep them for inspection. A penalty of ten times the value is guaranteed if quality issues arise. (2) Our team of engineers offers 24/7 support, free technical consultation, and provides process diagrams and tank designs at no cost. (3) With pH between 3-4, annual filler loss is less than 15%. This data has been verified by Sun Yat-sen University's environmental lab over six months and confirmed by users. **Applications of Weifang Puyin Runrun Iron-Carbon Filler**: (1) Dyeing, chemical, pharmaceutical, coking, and petroleum wastewater — significantly improves BOD/COD ratio. (2) Printing and dyeing, leather, papermaking, and wood processing wastewater — effective for decolorization, COD, and ammonia nitrogen removal. (3) Electroplating, printing, mining, and heavy metal-containing wastewater — effectively removes heavy metals. (4) Organic phosphorus and chlorine agricultural wastewater — enhances biodegradability, removes phosphorus and sulfides.
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