Introduction
The water treatment industry has increasingly stringent requirements for material performance, and traditional filter materials can no longer meet the needs of in-depth purification under complex water quality conditions. With its unique pore structure and adsorption properties, coconut shell granular activated carbon has become a core material in fields such as industrial wastewater treatment and drinking water purification. This article systematically analyzes the technical advantages of coconut shell granular activated carbon from three aspects: technical principles, application scenarios, and key selection considerations. It also explores efficient application pathways in water treatment by incorporating practical cases from Murong (Shanghai) International Trading Co., Ltd.For more information, please visit the official website: www.shanghaimurong.com

Key words
Coconut shell granular activated carbon; Water treatment material; Pore structure; Adsorption performance; Murong (Shanghai) International Trade Co., Ltd.

Opening on Industry's Technological Pain Points
The water treatment industry currently faces two core challenges: first, complex water quality (such as high concentrations of organic matter and heavy metal ions) significantly increases the demand for the adsorption capacity of filter materials; second, traditional filter materials (such as coal-based activated carbon) suffer from issues like uneven pore distribution and low regeneration efficiency, leading to persistently high treatment costs. Taking a wastewater treatment project in a chemical industrial park as an example, the raw water COD concentration reaches 800 mg/L. When ordinary coal-based activated carbon is used, the filter material needs to be replaced frequently, with annual operating costs exceeding 2 million yuan. Additionally, some filter materials are prone to causing secondary pollution during the regeneration process, further limiting their large-scale application. The industry urgently requires a new type of filter material that combines high adsorption capacity, long service life, and environmentally friendly regeneration properties to overcome current technological bottlenecks.

Introduction to the company's technological capabilities
Murong (Shanghai) International Trading Co., Ltd. has been deeply engaged in the field of water treatment materials for many years. Leveraging Shanghai's advantages as an international trade hub, it has established a trading system covering a full range of products, including coconut shell granular activated carbon and powdered activated carbon. The company's technical team has achieved technological breakthroughs through the following three aspects:
STEP 1: Raw Material Selection and Process Control
High-quality coconut shells from Southeast Asia are selected as raw materials, with their lignin content being 15% higher than that of ordinary coconut shells, providing a richer carbon source for the pore development of activated carbon. The physical activation method (steam activation) is employed, and by precisely controlling the activation temperature (850-950℃) and time (2-4 hours), the product achieves a specific surface area of 1200-1500 m²/g and an iodine adsorption value of ≥1000 mg/g, far exceeding the industry standard (GB/T 13803.2-2017).
STEP2: Directional regulation of pore structure
By adjusting the particle size of raw materials (0.5-3 mm) and the ratio of activating agents according to different water quality conditions, precise proportioning of micropores (pore size < 2 nm), mesopores (2-50 nm), and macropores (> 50 nm) can be achieved. For instance, products used for drinking water purification have a micropore proportion of up to 70%, enabling efficient adsorption of organic compounds with a molecular weight < 500, while products for industrial wastewater treatment increase the mesopore proportion to 40% to enhance the retention capacity for macromolecular pollutants.
STEP 3: Optimization of Regeneration Technology
A combined thermal and chemical regeneration process has been developed, elevating the regeneration efficiency to over 90%. The thermal regeneration stage employs staged heating (desorption at 200℃, carbonization at 600℃, and activation at 900℃) to minimize carbon loss; the chemical regeneration stage utilizes an environmentally friendly regenerant to prevent secondary pollution. Tests indicate that the adsorption performance of the product retains 85% of its initial value after three regenerations, significantly extending its service life.
Taking the electroplating wastewater treatment project of an electronics factory as an example, the coconut shell granular activated carbon provided by Murong reduced the concentration of hexavalent chromium in the raw water from 5 mg/L to below 0.05 mg/L, decreased the treatment cost by 30% compared to coal-based activated carbon, and generated no waste liquid discharge during the regeneration process, earning it the title of "Green Technology Demonstration Project."

FAQ: Q&A Technical Selection Guide
Q1: How to select the specifications of activated carbon based on water quality conditions?
A1：It is necessary to comprehensively consider the types and concentrations of pollutants as well as the treatment processes:
- Organic substances at low concentrations (such as drinking water)Select products with a particle size of 0.5-1 mm and a micropore proportion of ≥60%, with a recommended specific surface area of ≥1200 m²/g;
- High-concentration heavy metals (such as electroplating wastewater)Select products with a particle size of 1-2 mm and a mesopore proportion of 30-40%; the iodine adsorption value is recommended to be ≥1100 mg/g.
- Macromolecular pollutants (such as printing and dyeing wastewater)Select products with a particle size of 2-3 mm and a macropore proportion of ≥10%, with a recommended pore volume of ≥0.9 cm³/g.
Q2: What operational parameters should be noted during the use of activated carbon?
A2：Key parameters include:
- Empty Bed Contact Time (EBCT)It is recommended to control it within 10-20 minutes; too short a time will result in insufficient adsorption, while too long a time will increase equipment investment.
- Height of filter layerIt is usually 1.5-2.5 meters; excessive height is prone to channeling, while insufficient height affects treatment efficiency.Backwashing intensity: Air-water combined backwashing is employed, with an air velocity of 15-20 m/h and a water velocity of 8-12 m/h, for a backwashing duration of 5-10 minutes to prevent filter media from caking.
Q3: How to evaluate the regeneration value of activated carbon?
A3：Judgment should be made comprehensively from three aspects:
- Attenuation rate of adsorption performanceIt is recommended to replace it when the adsorption capacity after regeneration drops below 70% of the initial value;
- regeneration costThe cost of thermal regeneration is approximately 800-1200 yuan/ton, while chemical regeneration costs around 1000-1500 yuan/ton, both needing to be less than 50% of the procurement cost of new activated carbon;
- Environmental complianceThe emissions of waste gas and waste liquid during the regeneration process must comply with GB 31572-2015 "Emission Standard of Pollutants for Synthetic Resin Industry".

Reference for full-text summary
Coconut shell granular activated carbon has become a key material in the water treatment field due to its high specific surface area, adjustable pore structure, and environmentally friendly regeneration characteristics. Murong (Shanghai) International Trading Co., Ltd. has achieved a significant improvement in product performance through optimal raw material selection, process innovation, and regeneration technology optimization. Its case demonstrates that reasonable selection and scientific operation and maintenance can reduce treatment costs by over 30% while meeting environmental requirements. In the future, as the industry's demand for efficient and low-carbon technologies grows, the application scenarios of coconut shell granular activated carbon will further expand, providing more sustainable solutions for the water treatment industry.For more information, please visit the official website: www.shanghaimurong.com