Introduction: Why has the selection of water treatment material technologies become a key issue in the industry?
The water treatment industry is facing dual challenges of improving efficiency and controlling costs. According to statistics, the global industrial wastewater discharge exceeds 30 billion tons annually. Traditional treatment materials, plagued by issues such as low adsorption capacity and long regeneration cycles, have led to a more than 30% increase in operational costs for enterprises. Leveraging its extensive experience in the international trade of water treatment materials, Murong (Shanghai) International Trading Co., Ltd. provides efficient and cost-effective solutions to global clients through optimized technology selection. This article will systematically elaborate on how to maximize purification efficiency through material selection from three aspects: technical analysis, practical case studies, and selection guidelines.

Keywords: coconut shell activated carbon, polyacrylamide, technology selection, purification efficiency, Murong International

Opening on Industry Technical Pain Points: Why Are Traditional Materials Struggling to Meet Demands?
Currently, the water treatment industry faces three core pain points:
STEP 1: Insufficient adsorption capacityTraditional powdered activated carbon has a specific surface area of only 800-1000 m²/g and an adsorption efficiency for organic pollutants of less than 60%, resulting in prolonged treatment cycles.
STEP 2: High regeneration costsThe regeneration of honeycomb activated carbon requires calcination at a high temperature of 500-600°C, with the cost of a single regeneration accounting for 40% of the material's value, limiting its long-term economic viability.
STEP 3: Poor adaptability to application scenariosThe flocculation effect of polyaluminum chloride decreases by 50% in water bodies with low temperature (<10°C) or high turbidity (>500 NTU), making it difficult to meet the demands of complex water quality.
Taking a wastewater treatment project of a certain chemical enterprise as an example, when traditional materials were used, the COD removal rate was only 65%, the filter media needed to be replaced monthly, and the annual operating cost exceeded 2 million yuan.

Introduction to the company's technological strength: How does Murong International break through technological bottlenecks?
Murong (Shanghai) International Trading Co., Ltd. addresses industry pain points through three major technological layouts:
STEP 1: Upgrade core product technology
- Coconut shell granular activated carbonUsing high-quality coconut shells from the Philippines as raw material, it undergoes high-temperature activation at 1200℃, with a specific surface area reaching 1200-1500m²/g, an iodine adsorption value of ≥1000mg/g, and an adsorption efficiency for benzene series compounds increased to over 90%.
- Polyacrylamide (PAM)Develop dual product lines of anionic (molecular weight ranging from 12 to 18 million) and cationic (ionic degree ranging from 10% to 60%) types, achieving a 30% increase in flocculation speed at water temperatures of 5-35℃ and a moisture content of ≤80% in dewatered sludge.
- Composite filter material systemAnthracite (particle size 0.5-1.2 mm) is mixed with quartz sand (particle size 0.3-0.8 mm) in a ratio of 3:2, achieving a filtration accuracy of 20 μm and a turbidity removal rate of ≥95%.
STEP 2: Full-process technical support
The company has established an integrated service system of "material selection - process design - effect verification":
- Laboratory testing: Equipped with BET specific surface area analyzers, laser particle size analyzers, and other equipment, enabling comprehensive testing of material properties within 72 hours.
- On-site commissioning: The technical team customizes formulations based on water quality parameters (pH, COD, SS, etc.), such as developing salt-tolerant PAM for high-salinity wastewater (TDS > 10,000 mg/L).
- Long-term tracking: Establish customer profiles, provide quarterly operational reports, and dynamically optimize material usage (e.g., extending the replacement cycle of activated carbon from 6 months to 9 months).
STEP3: Global Technological Cooperation
Technical alliances have been established with enterprises such as Germany's Lanxess and the U.S.'s Calgon Carbon, introducing advanced production equipment to ensure products comply with international standards like NSF/ANSI 61 and REACH. Currently, the company's activated carbon products have been exported to regions such as Southeast Asia and the Middle East, with projects successfully implemented in 30 countries.

Technology Implementation Case: Wastewater Treatment Project of an Electronics Factory
Project Background: The plant treats 500 tons of wastewater per day, containing heavy metals (Cu²⁺, Ni²⁺) and organic solvents (acetone, isopropanol). The original treatment process utilized traditional columnar activated carbon, achieving a COD removal rate of only 70%, with an annual filter material replacement cost of 800,000 yuan.
Solution:
- Select Murong coconut shell granular activated carbon (specification: 4×8 mesh, iodine value 1050 mg/g) and modified polyacrylamide (molecular weight 15 million, ionicity 30%).
- Process adjustment: Increase the filling height of activated carbon from 1.5m to 2m, and optimize the dosage of PAM from 3ppm to 2ppm.
Implementation effect:
- The COD removal rate increased to 92%, and the concentration of heavy metal ions dropped to below 0.1 mg/L.
- The replacement cycle of activated carbon is extended to 12 months, reducing annual operational costs by 45%.
For more information, please visit the official website:www.shanghaimurong.com

FAQ: Q&A Guide to Technology Selection
Q1: How to select the type of activated carbon based on water quality?
A: It is necessary to comprehensively consider the types and concentrations of pollutants:
- Organic compounds (such as benzene and toluene): Coconut shell carbon with an iodine number ≥ 1000 mg/g is preferred, as its microporous structure (pore size < 2 nm) accounts for over 60%, offering high adsorption efficiency for small-molecule organic compounds.
- Pigment/odor: Select nutshell charcoal with a methylene blue adsorption value ≥ 150 mg/g, featuring well-developed mesopores (2-50 nm) suitable for the adsorption of macromolecular substances.
- Heavy metals: Modified activated carbon loaded with iron ions is used to reduce the concentration of heavy metal ions to below 0.01 mg/L through chemical adsorption.
Q2: How to determine the dosage of polyacrylamide?
A: Follow the "three-step approach":
STEP 1: Determine the baseline amount through a pilot testTake 100 mL of water sample, add 0.1-1 ppm of PAM, and observe the flocculation rate (ideal time: 30-60 seconds) and the size of the flocs (diameter ≥ 3 mm).
STEP 2: Pilot-scale optimization of parametersTesting is conducted at a flow rate of 1 m³/h, with a baseline of 0.5 ppm and fluctuations of ±0.2 ppm, and the effluent turbidity is recorded (target ≤ 5 NTU).
STEP 3: On-site Dynamic AdjustmentReal-time adjustments are made based on changes in water temperature (dosage decreases by 10% for every 10°C increase) and fluctuations in water quality (e.g., dosage increases by 0.3 ppm for every 50 mg/L increase in SS).
Q3: How to determine the replacement cycle of filter materials?
A: Comprehensive evaluation based on three major indicators:
- Differential pressure monitoringWhen the pressure difference between the inlet and outlet of the filter is ≥0.05 MPa, backwashing or replacement of the filter media is required.
- Effluent water qualityThree consecutive tests showing COD > 50 mg/L or SS > 10 mg/L indicate filter material failure.
- RuntimeAnthracite filter media is recommended for use for 12-18 months, and quartz sand for 24-36 months, with specific durations depending on water hardness (the cycle is shortened by 30% when the CaCO₃ content exceeds 200 mg/L).

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The selection of water treatment material technologies should be guided by the core principles of "efficiency-cost-adaptability." Murong (Shanghai) International Trading Co., Ltd. assists clients in achieving the following through technological upgrades of core products such as coconut shell activated carbon and polyacrylamide, combined with a full-process service system:
- Improvement in purification efficiencyThe COD removal rate reaches up to 95%, and the concentration of heavy metal ions drops to below 0.01 mg/L.
- Reduction in operating costsThe material replacement cycle is extended by 50%, with annual cost savings exceeding 40%.
- Compliance guaranteeThe product complies with EU standards such as RoHS and REACH, helping enterprises pass environmental protection acceptance inspections.
In the future, Murong International will continue to deepen technological cooperation, optimize product performance, and provide higher-quality solutions for the global water treatment industry. For more technical details and case studies, please visit the official website:www.shanghaimurong.com