Dye wastewater pretreatment
Coal-Based Granular Activated Carbon for Dye Wastewater Pretreatment
Coal-based granular activated carbon for dye wastewater pretreatment ahead of biological polishing. The granular fixed-bed form is intended to reduce color bodies and residual organic load before the biological stage. Reference values on the frozen specification are verified against batch figures before quotation.
Coal-based granular carbon for color and organic load reduction ahead of biological polishing.
- Iodine value
- 500 – 1100 mg/g
- Methylene blue adsorption
- ≥ 90 mg/g
DESCRIPTION
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This coal-based granular activated carbon is positioned for dye wastewater pretreatment ahead of biological polishing. It is a granular fixed-bed carbon made from a coal precursor, intended to reduce color bodies and residual organic load before the biological stage takes over.
Why use it before biological polishing
Dye wastewater often carries color bodies and residual organics that can disturb a biological stage. Placing a granular carbon bed upstream allows part of that load to be retained first, so the biological process meets a lower and steadier influent. The coal-based precursor gives a pore structure suited to retaining color bodies in pretreatment, and the granular form supports a fixed bed with lower pressure drop than a fine powder.
Selection checks
Confirm the dye type or wastewater source, flow rate, inlet color or COD, target outlet value, required granule size and purchase quantity. Granule size is matched to column diameter, flow rate and allowable pressure drop. The indicators on the frozen specification, such as iodine number, methylene blue adsorption, hardness and moisture, are reference values for the coal-based series; the applicable batch figures are verified before quotation. No removal guarantee is made, and price, available quantity and delivery are confirmed by a person in writing.
Next step
Send your process data through the contact channel so the applicable specification, granule size and document scope for the dye wastewater pretreatment duty can be reviewed against actual working conditions.
SPECIFICATIONS
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Reference values for the coal-based series; applicable batch figures are verified before quotation.
| 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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Why coal-based granular activated carbon is positioned ahead of biological polishing in dye wastewater treatment.
Suited to pre-biological polishing
The granular bed is positioned upstream of the biological stage to reduce color and organic load before the biological process takes over.
Upstream application
OUR COMMITMENTS
Six Reasons Industrial Buyers Trust Sanniu Carbon
How inquiries and orders for this coal-based granular carbon are handled, based on the confirmed service process.
Application review on inquiry
On receiving an inquiry we check the intended use, treatment objective and required product form before discussing the selection direction.
Scope of specifications and documents
We explain the applicability of the specifications and documents offered; the specific batch figures and available documents are confirmed before the transaction.
Packing and moisture requirements
When the order is confirmed, packing format and moisture-protection requirements are reviewed and governed by the mutually agreed order information.
Written confirmation of commercial terms
Price, available quantity and delivery are verified by a person and stated in the mutually agreed written quotation or order.
Follow-up after delivery
Questions about use or documents received after delivery are received and followed up through the agreed contact channel.
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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Packaging and moisture-control arrangements are reviewed and confirmed with each order for this coal-based granular carbon.
PROCESS
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How an inquiry for coal-based granular carbon in dye wastewater pretreatment is handled.
Share the process and targets
Describe the dye type or wastewater source, flow rate, inlet color or COD, target outlet value and the position of the bed in the treatment line.
Review the application and product form
We check the intended use, treatment objective and required granular form so the discussion starts from the actual working conditions.
Confirm the applicable specification
The specifications and documents offered are scoped to the product under discussion, and the exact batch figures are verified before quotation.
Agree packing and moisture protection
Packaging format and moisture-control requirements are reviewed when the order is confirmed and are governed by the mutually agreed order information.
Confirm commercial terms in writing
Price, available quantity and delivery are checked by a person and stated in the written quotation or order.
Follow up after delivery
Questions about use or documents received after delivery are handled through the agreed contact channel.
DIMENSIONS
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Physical and performance indicators used to describe the coal-based granular carbon in this pretreatment application.
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 questions buyers and engineers raise when specifying coal-based granular activated carbon ahead of biological polishing.
What makes this carbon suitable for dye wastewater pretreatment?
The coal-based granular form provides a mechanically stable bed with a pore structure suited to retaining color bodies and residual organics before biological polishing. The exact working capacity depends on the dye chemistry, concentration and contact time, so a batch value is confirmed against the frozen specification before quotation.
Should it be used before or after biological treatment?
This product is positioned upstream of biological polishing. Removing part of the color and organic load first can reduce the burden on the biological stage; if the biological stage is already primary, a post-polishing position may be more appropriate and should be reviewed with the process data.
Which specification values should I confirm before ordering?
Review iodine number, methylene blue adsorption, hardness and moisture on the frozen specification, then confirm the applicable batch values. The ranges shown are reference values for the coal-based series, and batch figures are verified before the quotation is issued.
How is the granular size selected for a fixed bed?
Granular size is matched to the column diameter, flow rate and allowable pressure drop. A finer granule generally gives faster kinetics while a coarser granule lowers pressure drop; the trade-off is decided from the actual bed geometry.
What information should be included in an inquiry?
Please describe the dye type or wastewater source, flow rate, inlet color or COD, target outlet value, required granule size and purchase quantity. This lets us confirm the applicable specification and document scope; price, available quantity and delivery are then verified by a person against a written quotation or order.
Can the carbon be regenerated or reused?
Reuse depends on the adsorbed load and the regeneration method available at the site. Because no performance guarantee is made here, we recommend discussing the spent carbon and regeneration route with us so the feasible option can be confirmed.
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RELATED TOPICS
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