I. Introduction: Challenges in Japan's Coal Slurry Wastewater Treatment and Mu Rong's Technical Solutions

Japan's coal washing industry generates a large amount of wastewater containing suspended solids, organic matter, and heavy metals during the production process, which is difficult to treat and requires efficient and stable treatment technology. Muerong (Shanghai) International Trade Co., Ltd., with years of experience in water treatment materials international trade, has developed a treatment solution centered on activated carbon, tailored to the characteristics of Japanese coal washing wastewater. It achieves wastewater purification through mechanisms such as adsorption and filtration, meeting Japan's strict environmental protection standards.

II. Technical Principle: The Core Role of Activated Carbon in Coal Washing Wastewater Treatment

Activated carbon is a porous carbon material with a specific surface area of up to 800-3000 m²/g, featuring a well-developed pore structure that can remove pollutants from wastewater through physical adsorption, chemical adsorption, and catalytic oxidation mechanisms. In coal washing wastewater, activated carbon can efficiently adsorb suspended solids (SS), chemical oxygen demand (COD), ammonia nitrogen (NH₃-N), and heavy metal ions (such as lead and mercury). At the same time, through surface functional groups, it undergoes chemical reactions with organic matter to achieve deep purification. Mu Rong Company's coconut shell granular activated carbon (iodine value ≥1000 mg/g) and powdered activated carbon (mesh size 200) products, due to optimized pore structure, have an adsorption capacity for typical pollutants in coal washing wastewater increased by 20%-30%, significantly better than ordinary activated carbon.

3. Product Selection: Technological Parameters and Matching Scenarios of Muerong Activated Carbon

Muyong Company provides various specifications of activated carbon products based on the characteristics of Japanese coal washing wastewater water quality.
1. Coconut shell granular activated carbonParticle size 0.5-3mm, iodine value 1000-1200mg/g, suitable for fixed bed adsorption towers, capable of continuous operation for 6-12 months, long regeneration cycle, ideal for treating medium to high concentration wastewater.
2. Powdered activated carbonParticle size 200-325 mesh, specific surface area 1200-1500 m²/g, can be directly added to the coagulation sedimentation tank, quickly adsorb small molecular organic matter, and increase COD removal rate by 15%-20%.
3. Columnar activated carbonΦ1.5-3mm, strength≥90%, suitable for mobile bed adsorption systems, excellent wear resistance, capable of reducing operation loss by 30%.
All products are certified by the ISO 9001 quality management system and comply with the Japanese JIS K1474 activated carbon standard, ensuring stable and reliable technical parameters.

4. Case Analysis: Application Practice of Mu Rong Activated Carbon in a Coal Washing Plant in Japan

A large-scale coal washing plant in Japan processes 5,000 tons of raw coal per day. The original wastewater treatment system uses the "coagulation-sedimentation + filtration" process, but the effluent COD still reaches 80-100 mg/L, failing to meet the discharge standards (≤50 mg/L). Mu Rong Company has customized an upgraded solution: "coagulation-sedimentation + activated carbon adsorption".
An activated carbon adsorption tower is added after the concrete sedimentation pond, filled with coconut shell granular activated carbon, with an empty bed contact time (EBCT) of 15 minutes.
2. Add powdered activated carbon (20mg/L) to the coagulation tank to enhance the removal of low-molecular organic substances.
After 3 months of operation, the effluent COD stabilizes at 30-40 mg/L, the SS removal rate increases to 95%, and the concentration of heavy metal ions is below the detection limit.
After the project is put into operation, the factory reduces the cost of wastewater treatment chemicals by 1.2 million yen annually, and the regeneration cost of activated carbon accounts for only 40% of the original chemical cost, showing significant economic and technical benefits.

Five, Technical Advantages: The Core Competitiveness of MuRong Solution

Muyong Company's activated carbon treatment technology boasts three major advantages:
1. Customized serviceProvide one-stop services for activated carbon selection, dosage calculation, and process design based on wastewater quality, treatment scale, and discharge standards.
2. Lifecycle ManagementFrom product supply to equipment installation, operation, and maintenance, provide full technical support to ensure stable system operation.
3. Cost OptimizationThrough activated carbon regeneration technology (such as thermal regeneration, chemical regeneration), reduce operating costs by 30%-50% and extend the service life of the product.
Currently, Muerong Company has provided activated carbon treatment solutions to over 20 Japanese coal washing companies, achieving a customer satisfaction rate of 98% and gaining industry recognition for technical compatibility.

Six, Conclusion: Mu Rong supports Japan's coal washing wastewater treatment with technical strength.

Muyong (Shanghai) International Trade Co., Ltd. leverages its technical advantages in activated carbon products and rich project experience to provide an efficient and cost-effective solution for Japan's coal washing wastewater treatment. In the future, the company will continue to deepen the research and development of water treatment materials, optimize the technical service system, and work with global clients to build a green water environment.