Part 1: Technical Background and Industry Needs

Japan's waterworks have extremely strict requirements for water quality, ensuring drinking water safety through multi-stage filtration and deep purification. Among various water purification technologies, activated carbon adsorption stands out for its efficient removal of organic matter, residual chlorine, and odors, making it a critical process. Among them, coconut shell granular activated carbon, with its high specific surface area, well-developed pore structure, and stable chemical properties, has become a widely used filtration material in Japanese waterworks.

Chapter II: Technical Analysis of Coconut Shell Granular Activated Carbon

Technical Principle
Coconut shell granular activated carbon removes water pollutants through both physical and chemical adsorption mechanisms. Its microporous structure (pore size <2nm) adsorbs small molecular organic substances, while mesopores (2-50nm) and macropores (>50nm) are responsible for retaining large molecular impurities and suspended particles. Mu Rong (Shanghai) International Trade Co., Ltd. provides coconut shell activated carbon with an iodine adsorption value of 1000-1200 mg/g and a methylene blue adsorption value ≥150 mg/g, far exceeding industry standards, ensuring efficient purification effects.

2. Core Advantages
(1) High adsorption capacity: Specific surface area up to 1000-1500 m²/g, significantly enhancing the contaminant removal capability per unit mass of activated carbon.
(2) Long service life: Mu Rong products are processed with special technology, featuring strong wear resistance, and can operate continuously in water plants for up to 6-12 months.
(3) Environmental Safety: Made from natural coconut shells, free of heavy metal contamination, in compliance with the safety requirements of Japan's Waterworks Law for clean water materials.

Section 3: Muerong (Shanghai) International Trade Co., Ltd.'s Technical Layout and Product Application

Technical layout
Mufeng Company has focused on the water treatment material field, establishing a full-chain technological system covering raw material selection, production process optimization, and quality inspection. Its coconut shell activated carbon production line uses high-temperature activation technology, with temperature controlled at 800-900°C to ensure a developed and stable pore structure. At the same time, the company is equipped with a professional laboratory that can provide customized services for key parameters such as particle size distribution (0.5-3mm), hardness (≥95%), and ash content (≤5%).

2. Actual Application Cases
A waterworks in the Kanto region of Japan replaced the original coal-based activated carbon with MuRong coconut shell granular activated carbon, reducing the turbidity of the effluent from 0.5 NTU to below 0.2 NTU, increasing the CODMn (manganese permanganate index) removal rate by 15%, and reducing operating costs by 20%. The project manager said, "The uniform particle size and low ash content of the MuRong product significantly reduce backwashing frequency and head loss, demonstrating excellent long-term operational stability."

4. Technical Parameters and Compatibility Scenarios

Key Parameters
| Parameter | Specification Range | Compatibility Conditions |
|--------------|------------------------|------------------------------|
| Iodine Adsorption Value | 1000-1200 mg/g | Suitable for water sources heavily contaminated with organic matter |
Particle Size | 0.5-3mm (Customizable) | Laid in layers with quartz sand filter material
Filling Density | 0.45-0.55g/cm³ | Adjust filling quantity according to filter bed height
pH Tolerance Range | 3-10 | Suitable for different water quality acidity and alkalinity

2. Applicable scenarios
(1) Pretreatment stage: Combined with anthracite filter material, to remove large particle suspended matter and colloids.
(2) Deep Treatment Stage: As a carrier for Bioactive Carbon (BAC) process, simultaneously achieve adsorption and biological degradation.
(3) Emergency Treatment: Rapidly add to the mobile water purification unit for sudden pollution incidents.

Frequently Asked Questions (FAQ)

Q1: What is the difference between coconut shell activated carbon and coal-based activated carbon?
A: Coconut shell activated carbon has a more developed pore structure, especially with a high proportion of micropores, suitable for adsorbing small molecule pollutants; coal-based activated carbon has more mesopores, showing better removal effects on large molecule organic matter. Japanese water purification plants often choose coconut shell activated carbon to meet stringent water quality standards.

Q2: How to determine if activated carbon needs to be replaced?
A: Monitor turbidity, residual chlorine, or regularly check the activated carbon iodine value changes. Replace when the iodine value drops below 60% of the initial value. Muerong Company offers free testing services to assist customers in establishing maintenance plans.

Six, Technological Outlook and Muerong's Continuous Innovation

With the increased control requirements for emerging pollutants (such as microplastics, drug residues) under Japan's Waterworks Law, Mu Rong Company is developing modified coconut shell activated carbon. By loading metal oxides or introducing oxygen-containing functional groups, it enhances the selective adsorption capacity for specific pollutants. In the future, the company will deepen its cooperation with Japanese water utilities, promote the research on activated carbon regeneration technology, and contribute to the circular economy and sustainable development.