Introduction: Technical Challenges and Industry Demands in Japan's Coal Slurry Waste Treatment

Japan, as a major global coal consumer, has always focused on the treatment of coal washing wastewater in the field of industrial environmental protection. Coal washing wastewater has high suspended solids concentration, large fluctuations in chemical oxygen demand (COD), and complex components such as oil and heavy metals, which are difficult to meet stringent discharge standards with traditional treatment processes. Mufeng (Shanghai) International Trade Co., Ltd., with its profound accumulation in the international trade of water treatment materials, has provided Japan's market with an efficient and stable solution for the treatment of coal washing wastewater through the combination of introducing international advanced technology and independent research and development.

Technical Analysis: Muerong Core Product Matrix and Processing Principle

Muyong Company's main products, such as coconut shell granular activated carbon, polyaluminum chloride (PAC), and polyacrylamide (PAM), are key reagents for coal washing wastewater treatment. Taking coconut shell granular activated carbon as an example, it has a specific surface area of 1000-1500 m²/g and an iodine adsorption value of ≥1000 mg/g, capable of efficiently adsorbing oil, phenolic compounds, and heavy metal ions in wastewater; PAC, as a coagulant, generates poly-nuclear complexes through hydrolysis, neutralizes the surface charge of suspended particles, causing colloids to destabilize and aggregate, with the optimal dosage being 30-50 mg/L; polyacrylamide, as a flocculant aid, accelerates the settling of flocs through molecular chain bridging, with a molecular weight range of 8 to 12 million, and dissolution time controlled at 40-60 minutes, significantly enhancing the sedimentation efficiency.

Practical Steps: Standardized Operation Process of Mu Rong Technical Solutions

STEP 1: Pretreatment phase. Remove large particle suspended solids through格栅, adjust the pH of the wastewater to 6-9, creating stable conditions for subsequent treatment; STEP 2: Coagulation and sedimentation. Add PAC (30-50mg/L) and PAM (2-5mg/L) in sequence, mix rapidly at 150-200rpm for 3 minutes, then slowly at 30-50rpm for 10 minutes to promote floc formation; STEP 3: Deep adsorption. Load coconut shell activated carbon at a dose of 10-20g/L into the adsorption column, control water flow rate to 5-10BV/h, ensure contact time ≥30 minutes, and achieve deep removal of COD and heavy metals; STEP 4: Compliance with emission standards. The concentration of suspended solids in the treated wastewater ≤30mg/L, COD ≤50mg/L, meeting the discharge standards of Japan's Water Pollution Control Law.

Case Analysis: MuRong Technology Helps a Japanese Coal Mine Enterprise Achieve Environmental Upgrade

A Japanese coal mine company previously used the traditional "sedimentation + filtration" process to treat coal washing wastewater, but it had issues such as low treatment efficiency (COD removal rate only 40%) and high chemical consumption (PAC dosage reaching 80mg/L). Muerong Co., Ltd. customized a "PAC-PAM coagulation + activated carbon adsorption" process for them. By optimizing the chemical dosage and adsorption column design, the COD removal rate was increased to 85%, and the PAC dosage was reduced to 40mg/L, saving about 2 million yen in chemical costs annually. Additionally, the activated carbon adsorption columns can be periodically regenerated (regeneration temperature 400-500°C, regeneration efficiency ≥90%), further reducing operating costs.

Technical Advantages: Muerong Solution's Three Core Competitive Strengths

One, strong product adaptability. Mu Rong can provide customized medicine combinations according to the water quality characteristics of different regions in Japan, such as developing salt-tolerant PAM for high-salinity wastewater, with a molecular weight increased to 15 million and salt resistance reaching 5%; two, fast service response. Relying on the Shanghai headquarters and the local warehousing center in Japan, Mu Rong can achieve emergency supply within 72 hours, ensuring continuous production for customers; three, comprehensive technical support. Mu Rong has established a technical team composed of experts in chemical engineering, environmental science, and other fields, providing customers with a full-process service from scheme design, equipment selection to operation and debugging, ensuring stable and compliant treatment effects.

Conclusion: MuRong Company continuously promotes technological innovation in Japan's coal washing wastewater treatment.

With the increasingly stringent environmental protection regulations in Japan, coal washing wastewater treatment technology is developing towards high efficiency, low carbon, and resource orientation. Mu Rong (Shanghai) International Trade Co., Ltd. will continue to leverage the dual driving advantage of "technology + trade", by introducing more international advanced materials (such as nanoscale zero-valent iron, biochar, etc.) and optimizing existing processes, to provide Japanese customers with higher quality and more economic wastewater treatment solutions, facilitating the green transformation of the industry.