Activated Carbon For Coking Plant Wastewater Treatment Heycarbons Manufacturer From China
Activated carbon can be used to treat wastewater from coking plants. It can effectively absorb ammonia, phenol, benzene, cyanide, oil, ammonia nitrogen and other substances in the wastewater, and can stably remove COD and decolorize the wastewater.
Why Does Coking Plant Wastewater Need to Be Treated?
Coking wastewater is wastewater generated during coking, gas purification and by-product recovery.
The causes of coking wastewater are mainly reflected in the following aspects:
- Ammonia-containing liquid cracked by boiler equipment during cooling operation,
- Benzene and aromatic hydrocarbon products decomposed by purification equipment under high temperature conditions,
- Excessive salt-containing wastewater generated by distillation equipment.
All of these will cause a series of water pollution phenomena rich in heavy metals and organic matter.
The amount of wastewater discharged by the coking plant is large. The water quality is complex, with high concentrations of phenol, cyanide, oil, ammonia nitrogen and other substances, rich in polycyclic aromatic hydrocarbons, high chroma of pollutants, and exists in the form of true solution or quasi-colloid in water. It is stable in nature and difficult to remove COD and chroma.
The quality of coking wastewater is affected by multiple factors such as coal quality, process flow, and operating technology. Because of differences in processes such as by-product recovery and coal raw materials, the content of pollutants in coking wastewater also varies greatly. From a conventional perspective, wastewater contains relatively many types of organic matter, mainly polycyclic aromatic compounds, phenolic compounds, etc.
Activated carbon adsorption is the main process for treating coking wastewater. Activated carbon can effectively adsorb ammonia, phenol, benzene, cyanide, oil, ammonia nitrogen and other substances, and can stably remove COD and decolorize wastewater. Activated carbon treatment can ensure that coking wastewater meets the requirements of local emission indicators and protect the environment.
How is Coking Wastewater Treated?
The coking wastewater treatment process is generally divided into three stages: physical and chemical pretreatment, biochemical treatment, and deep treatment.
Stage 1-Physical and chemical pretreatment
Stage 2-Biochemical treatment
Stage 3-Deep treatment
The deep treatment part includes ozone contact oxidation, activated carbon adsorption and reverse osmosis membrane components.
Ozone is highly oxidizing and has a strong oxidative degradation effect on organic matter in water, reduces COD in wastewater, and has a certain effect on decolorization.
The role of ozone treatment is to protect the reverse osmosis membrane components, reduce the degree of contamination on the membrane surface as much as possible, and increase the working cycle and water production rate of the membrane.
Activated carbon adsorption plays the role of a security filter for reverse osmosis membrane components. Its function is to remove unconsumed or excess ozone, and it can also remove some soluble COD, and it also has a certain effect on decolorization.
Reverse osmosis (RO) is a technology that uses pressure as a driving force and uses the selectivity of reverse osmosis membranes to separate solutes from water in aqueous solutions. The water produced by the reverse osmosis membrane assembly can meet the water quality requirements for the production of net circulating water supplement water. About 25% of the concentrate can be sprayed on the coal yard, and can also be used as supplementary water for wet coke quenching.
Activated Carbon For Coking Wastewater Decolorization Experiment
1. Preparation:
100ml of raw water
600ppm of activated carbon
300ppm of polyferric sulfate PFS decolorizer
2. Process:
Add activated carbon and PFS decolorizer to the test tube at the same time, stir for 30 minutes and filter.
3. The left picture shows the coking wastewater after being treated with different activated carbons. The activated carbons used are from left to right: the activated carbon currently being used by the customer and three types of coal-based powdered activated carbons with different iodine values.
How to Use Activated Carbon For Coking Plant?
In the treatment of coking wastewater, activated carbon is mainly used in the following three types of equipment:
- Fixed bed adsorption tower (most common)
- Fluidized bed (continuous adsorption)
- Powdered activated carbon addition (suspended adsorption)
Activated carbon is usually used after biochemical treatment to remove residual pollutants that are not completely removed by biochemical treatment.
Pay attention to the actual operation
- Regular replacement/regeneration
Activated carbon will be saturated when adsorbed to a certain extent, and the adsorption performance will decrease. It needs to be replaced in time or regenerated by high temperature.
- Cost control
The price of activated carbon is relatively high, and the dosage and regeneration frequency directly affect the operating cost.
- Combined process
It is usually used in combination with other processes (such as flocculation sedimentation, biochemical treatment) to achieve better treatment effects.
Powdered activated carbon filling process
The following video shows you the filling process of powdered activated carbon for coking wastewater treatment.
What is the Use of Activated Carbon in Coking Wastewater Treatment?
Activated carbon can be used for wastewater treatment in coking plants to adsorb organic matter, decolorize and remove odors, remove micro-pollutants, and be used for subsequent deep treatment.
- Adsorption of organic matter
Activated carbon has a well-developed microporous structure and a large specific surface area, and has a strong adsorption capacity for organic pollutants such as COD, benzene series and phenolic compounds in wastewater.
- Decolorization and deodorization
Activated carbon can adsorb chromaticity and some odor components in wastewater.
- Removal of micro-pollutants
Activated carbon also has a certain removal effect on some trace heavy metals and persistent organic matter.
- Subsequent deep treatment
Activated carbon is generally used as a deep treatment link after biochemical treatment to further improve the quality of wastewater.
Coking Wastewater Emission Standards
Emission standards for wastewater treatment in coking plants:
- COD: 300-400mg/L → <80mg/L
- Ammonia nitrogen: 300-400mg/L → <25mg/L
Best Activated Carbon For Coking Plant
What is Activated Carbon Powder For Wastewater Treatment in Coking Plants?
If you want to know which powdered activated carbon is suitable for coking plant wastewater treatment, Heycarbons provides you with two customer cases for your reference.
If you have other needs, you can also tell us. Heycarbons has been focusing on activated carbon production for more than 20 years and provides you with professional advice, high-quality activated carbon, direct factory prices and free samples.
Coal Powdered Activated Carbon For Coking Wastewater Treatment Customer Case
A customer requested to use activated carbon to treat coking wastewater to remove COD and ammonia nitrogen in the water. The phenol adsorption value of the activated carbon was required to be 3-4. After understanding the customer’s needs, heycarbons professionals recommended the following activated carbon specifications:
- Coal powdered activated carbon
- 200 mesh
- Iodine value 900mg/g
Wood Powdered Activated Carbon For Coking Wastewater Decolorization Customer Case
A customer has a decolorization requirement for the treatment of coking wastewater. Heycarbons recommends the customer to use wood powdered activated carbon with 200mesh, methylene blue value of 14 ml/0.1g.
Powdered Activated Carbon
Heycarbons Activated Carbon For Industrial Wastewater Treatment
Custom Heycarbons Activated Carbon Solution For Coking Wastewater
Heycarbons provides a full range of activated solutions at competitive prices.
Custom Heycarbons Activated Carbon For Coking Wastewater
Heycarbons has proudly served the activated carbon industry with high-quality products since 2005, we can customize your activated carbon for your project.
- Personalized service and advice based on your needs and preferences. Different raw materials for different applications.
- Customized size, iodine value , methylene blue, PH, ash, etc.
- Heycarbons customized package to promote your brand, and free design service.
Call Us
+86-180 3788 5195
Our Email
info@heycarbons.com
Steps to Custom Heycarbons Activated Carbon For Coking Wastewater
Consultation
By understanding your needs and requirements, our salesmen work with you to submit the appropriate activated carbon solution.
Quotation
Heycarbons expert customer service will provide you with a free quote based on your requirements as well as product specifications and quantities.
Production
Heycarbons has sufficient inventory and strong production capacity, and will report production progress to you from time to time.
Shipping
Heycarb know you need to receive the product as soon as possible, after rigorous quality checks and protective packaging, by fedex shipping.
Are You Looking for Heycarbons Activated Carbon Manufacturers?
Contact us for design assistance, free quote, and expert advice today.
Your inquiry will be replied within 24 working hours, and Heycarbons respect your privacy.
