Coal-Based Granular Activated Carbon
Coal-Based Granular Activated Carbon for Municipal Drinking-Water Odour Polishing
Coal-based granular activated carbon for odour polishing in municipal drinking-water treatment. The page explains where the granular form fits in the treatment train, the coal-based mixed pore profile relevant to taste- and odour-causing organics, application limits around upstream treatment and contact time, and the specification values a buyer should confirm before enquiry. Certificate scope and sample RoHS documents are stated for what they cover; price, availability, delivery and performance guarantees are not published and are confirmed in writing.
Reference values from the coal-based series range; batch values and document scope are confirmed before quotation.
- Iodine value
- 500 – 1100 mg/g
- Methylene blue adsorption
- ≥ 90 mg/g
DESCRIPTION
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Coal-Based Granular Carbon for Odour Polishing in Drinking-Water Duty
This product is a coal-based granular activated carbon supplied for odour polishing in municipal drinking-water treatment. It is intended for fixed-bed and contactor duty where water has already passed the main treatment stages and the remaining task is to reduce taste- and odour-causing organics before final disinfection. Typical placement is after clarification and filtration, and before chlorination or other final disinfection, so that organics are removed before oxidants are applied.
The coal feedstock gives a broad pore structure that combines micropores for small organic molecules with a developed mesopore fraction that can take up larger odour-causing compounds. The granular form is chosen for pressure-driven water duty rather than for fine polishing of a clear liquid: the particles form a permeable bed that can be backwashed, and the graded size distribution supports even flow distribution and controlled head loss across the contactor.
What This Grade Suits and Where It Reaches Its Limits
This grade is most suitable for odour and taste polishing on municipal water with moderate organic loading. It is not a general-purpose replacement for coagulation, sedimentation, filtration or disinfection, and it does not by itself remove every contaminant class. Bed performance depends on the inlet organic concentration, contact time, empty bed contact time and backwash regime, so the figures published here describe the coal-based series rather than a guaranteed outlet quality. The values listed in the specification block are reference values from the series range. Batch values are confirmed before quotation.
How the Granular Form Behave in a Contactor
Water passes through the packed carbon bed in downflow or upflow mode, depending on the contactor arrangement. The granular particles present a large external and internal surface for adsorption, and the bed can be backwashed periodically to release accumulated solids and restore permeability. Operating practice should set backwash rate and frequency by observed head loss and turbidity rather than by a fixed schedule, because a bed that is backwashed too aggressively can stratify or lose fines, while an under-washed bed can channel and shorten service life. The hardness, attrition and moisture figures bound the as-supplied condition of the batch.
Selection Checks Before Enquiry
A buyer selecting this grade should first confirm the treatment target, the inlet and target odour or organics figures, the flow rate, the intended empty bed contact time, the column or contactor dimensions and the planned backwash method. Granular size should be matched to the vessel and the acceptable head loss rather than chosen only on adsorption capacity. Where a pre-treatment step is already removing suspended solids, the carbon bed will normally last longer between backwashes. Discussing the full duty train with the carbon supplier avoids treating the carbon as a stand-alone fix. Please note that price, available quantity and delivery date are not published here and are confirmed by a written quotation or order.
SPECIFICATIONS
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Specification range for this coal-based granular series. Values are reference figures from the series range; batch values are confirmed before quotation, and the columns expressed as ranges are not single fixed points.
| Iodine value | 500 – 1100 mg/g |
|---|---|
| Methylene blue adsorption | ≥ 90 mg/g |
| BET surface area | 650 – 1000 m²/g |
| CTC adsorption | ≥ 35 % |
| Ash content | ≤ 20 % |
| Moisture | ≤ 8 % |
| Hardness | ≥ 90 % |
| Bulk density | 0.5 – 0.65 g/cm³ |
| pH value | 7 – 11 |
| Particle size | 4 – 40 目 |
ADVANTAGES
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What a buyer can check before placing an order.
Five material series from one supplier
Coal-based, coconut shell, wood-based, nutshell and bamboo activated carbon are produced and exported directly, so different filtration duties can be covered without splitting the order across suppliers.
Material choice
OUR COMMITMENTS
Six Reasons Industrial Buyers Trust Sanniu Carbon
These commitments reflect the supplier's confirmed general service process and describe how an enquiry for this coal-based granular carbon is handled. They do not state fixed price, stock, delivery time, warranty, sample supply or any performance guarantee.
Duty review after enquiry
When an enquiry is received, the use scenario, treatment target and product form are reviewed before any selection direction is discussed, so the conversation starts from the actual odour-polishing duty rather than from a catalogue number.
Scope of specifications and documents
The supplier explains the applicable range of the referenced specifications and documents for this coal-based granular carbon. Batch-level indicators and the documents that can be provided are confirmed before the transaction.
Packing and moisture protection confirmed at order
Packing specification and moisture-protection requirements are checked when the order is confirmed. The order information agreed by both sides governs.
Price, availability and delivery verified by hand
Price, available quantity and delivery date are verified manually and are governed by the written quotation or order confirmed by both sides. No fixed figures are published on this page.
After-delivery follow-up
Questions about use or documentation after delivery are received and followed up through the agreed contact channel.
No implied guarantees
This process does not represent a fixed quotation, stock level, delivery time, warranty, sample supply or any product performance guarantee.
CREDENTIALS
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ISO 9001:2015 quality management
Certificate for the company’s quality management system; its certified scope is activated carbon sales.
Beide RoHS sample test
Beide reported that the tested activated carbon sample met the cited RoHS requirements; this is a sample report.
CTI RoHS sample test
CTI reported a PASS result for the tested activated carbon sample under RoHS 2011/65/EU and (EU) 2015/863.
Activated carbon safety data sheet
UG issued SDS No. 84309439 for Carbon, Activated; use it for handling and safety information.
CCIC activated carbon sample report
The available cover identifies an activated carbon sample submitted to CCIC; test items and results require the report pages.
Wood powder carbon sample report
The available cover identifies a 200–325 mesh wood powder activated carbon sample tested by the Shanghai institute; no result is inferred.
PACKAGING
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PROCESS
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The steps below describe how coal-based granular activated carbon is made. They are manufacturing steps only and are not service commitments, warranties or performance guarantees.
Coal feedstock selection and preparation
Selected coal is prepared and sized to provide a consistent feedstock for the activation stage.
Carbonisation
The prepared coal is carbonised at elevated temperature in a controlled atmosphere, driving off volatiles and forming a carbon-rich char with an initial pore structure.
Activation
The char is activated at high temperature with an activating agent to develop the internal pore network, combining micropores with a mesopore fraction suited to odour-causing organics.
Crushing and granulation
The activated material is crushed and processed to the target granular form, so that the finished product can be packed into a permeable fixed bed rather than used as a fine powder.
Sizing and screening
The granules are screened to the graded size distribution of the series, which supports even flow distribution and controlled head loss in the contactor.
Quality checks and packing
The finished granules are checked against the series indicators and packed with moisture protection, ready for the packing specification agreed at order confirmation.
DIMENSIONS
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Classification references for this coal-based granular carbon, covering application area, product form and feedstock family.
Product form
Granular activated carbon
Granular media for fixed-bed adsorption and filtration. Compare particle size, pressure drop and handling needs.
Application
Water treatment
Activated carbon selection for water polishing, colour and odour control. Share the water analysis and treatment targets.
Material
Coal-based activated carbon
A versatile material family for industrial treatment, with granular, pellet and powder forms selected to suit the process.
FAQ
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Common selection questions from buyers comparing coal-based granular carbon for municipal drinking-water odour polishing.
How do I know whether a coal-based granular carbon suits my odour-polishing duty?
Start from the treatment target and the water matrix, not from the product name. Confirm what causes the taste and odour, the inlet and target odour or organics figures, the flow rate, the intended empty bed contact time and the contactor dimensions. Coal-based granular carbon has a mixed pore structure that can take up a range of odour-causing organics, so it is commonly considered for polishing duty with moderate organic loading. It is not a substitute for coagulation, sedimentation, filtration or disinfection, and it does not remove every contaminant class. Share the duty details in the enquiry so the selection can be discussed against the real operating conditions.
What specification values should I check first?
The specification block on this page covers iodine number, hardness, moisture, bulk density, particle size distribution, pH and fines content for the coal-based series. Batch indicators are confirmed before quotation. Priority depends on the duty: particle size and uniformity affect head loss and backwash behaviour; hardness and fines content affect how the bed holds up under repeated backwashing; adsorption-related indicators such as iodine number describe the series rather than guaranteeing a treated-water outlet. Use the published figures to narrow the choice, then confirm the batch values for the actual supply.
Can this carbon guarantee a specific treated-water odour result?
No outlet quality is guaranteed by this page. Carbon bed performance depends on the inlet organic concentration, contact time, empty bed contact time, temperature, pH, backwash regime and how well upstream treatment is working. The published figures describe the coal-based series range, and batch values are confirmed before quotation. Odour polishing in drinking-water duty should be assessed as part of the full treatment train, with any performance expectation set through site trials or an agreed specification rather than from a single product page.
Which information should I include in an enquiry?
Useful items are the treatment object and application, flow rate, inlet and target odour or organics figures, water temperature and pH, the intended contact time, contactor or column dimensions, planned backwash method, required particle size, and the purchase quantity you are considering. If the plant has constraints on packaging, liner material or unloading access, state them as well. These details let the supplier review the duty and discuss selection direction. Price, available quantity and delivery date are not published here and are confirmed by a written quotation or order.
Does the quality-management certificate cover production of this carbon?
The quality-management certificate referenced in the credentials section covers activated carbon sales, not production. It should not be read as a manufacturing certification for this or any other product. The RoHS documents referenced there relate to the specific activated carbon samples that were tested and are not a certification of every batch or of the full product range. If you need the document scope confirmed for a particular order, ask for that confirmation before the transaction.
Can I get a sample, a fixed price or a delivery date from this page?
This page does not state sample availability, prices, stock levels or delivery times. Such items are dealt with through the supplier’s normal enquiry and order process and are governed by the written quotation or order confirmed by both sides. Submit the duty details through the agreed contact channel, and the commercial points will be handled with the technical selection discussion rather than posted as fixed figures online.
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