Activated Carbon For Landfill Leachate Heycarbons Manufacturer From China
Landfill leachate can cause harm to the ecological environment and human health, so it is imperative to use activated carbon to treat landfill leachate.
Why Use Activated Carbon to Treat Landfill Leachate?
what is landfill leachate?
Landfill leachate is a high-concentration organic wastewater produced during the landfill or stacking of domestic waste. It is the product of the contact, penetration and decomposition of garbage with water (such as rainfall, groundwater, and wet garbage itself).
It contains organic pollutants (COD, BOD, humic acid, volatile phenols), nitrogen substances (ammonia nitrogen NH₄⁺-N, nitrates), heavy metals, inorganic salts, color and odor.
The production of landfill leachate will pollute surface water and groundwater resources; contain carcinogenic, teratogenic, and mutagenic components; it will also cause impact loads on sewage treatment facilities; and it is easy to cause soil salinization and acidification.
Landfill leachate poses a threat to ecosystems and human health, so it needs to be effectively treated.
Activated carbon is mainly used in the deep purification stage of landfill leachate treatment. Due to its large specific surface area and strong adsorption capacity, activated carbon can effectively remove pollutants such as organic matter, ammonia nitrogen, pigments, odors, heavy metals, etc., so that landfill leachate meets environmental protection standards and ensures the safety of the water environment.
How Do You Treat Leachate From Landfills?
Treatment of Leachate from the Landfill
The leachate treatment process is divided into three stages: pretreatment, biochemical treatment and deep treatment.
Pretreatment stage
- Grilles and screens
It’s installed at the water inlet, used to intercept large solid impurities such as large particles, plastic bags, wood chips, etc., to prevent clogging of pipes and damage to equipment.
- Regulating tank
It’s used to homogenize the water quality and water volume of leachate, adjust the pH value, and buffer water inlet fluctuations. Generally equipped with mechanical stirring or aeration devices to prevent sedimentation and odor.
- Coagulation and sedimentation
By adding coagulants (such as polyaluminium chloride PAC, polyacrylamide PAM), colloids, organic matter, and some metal ions in the water are aggregated into large particles and precipitated, reducing turbidity and some COD.
- Oxidation pretreatment
Such as Fenton oxidation, ozone oxidation and other means, chemically decompose refractory organic matter, improve the biodegradability of wastewater, and create good conditions for subsequent biochemical treatment.
Biochemical treatment stage
This stage is the core of the entire process. It mainly uses microorganisms to degrade organic pollutants and nitrogen substances in wastewater, significantly reducing COD, BOD and ammonia nitrogen concentrations.
- Upflow anaerobic sludge bed UASB
Suitable for high-concentration organic wastewater treatment, relying on anaerobic microorganisms to decompose organic matter into biogas (mainly methane), with the advantages of low energy consumption and low sludge production.
- A/O or A²/O process (anoxic-aerobic/anaerobic-anoxic-aerobic process)
By adjusting the oxygen environment, the nitrification-denitrification reaction of ammonia nitrogen is achieved, and ammonia nitrogen and some organic pollutants are effectively removed.
- SBR (Sequencing Batch Reactor):
Suitable for small and medium-sized landfills, periodic operation, can integrate homogenization, reaction, and precipitation, flexible operation, and small footprint.
- MBR (Membrane Bioreactor)
Combines membrane separation with activated sludge method, has excellent effluent quality, can achieve efficient solid-liquid separation, but has high investment and operation costs, and requires regular cleaning of membrane components.
Deep treatment stage
This stage mainly targets the residual small molecular organic matter, salt and chromaticity in the effluent of biochemical treatment to ensure that the effluent water quality meets the standard or can be reused.
- Nanofiltration (NF)
It is used to intercept divalent and some monovalent ions and small molecular organic matter, and is often used as the pretreatment link of the reverse osmosis RO system.
- Reverse osmosis (RO)
It uses a high-pressure membrane system to effectively remove more than 99% of soluble salts and most organic matter in wastewater, and the produced water can be reused for greening, cleaning or further purification.
- Activated carbon adsorption
It uses activated carbon with a high specific surface area to adsorb residual organic matter, pigments and odors in the water as a terminal enhanced treatment process to improve the water quality.
- Advanced oxidation (such as ozone, Fenton)
It decomposes difficult-to-degrade organic matter through strong oxidation reactions, which is especially suitable for deep purification or emergency treatment of leachate.
What is the Use of Activated Carbon in Wastewater Treatment?
Activated carbon can remove organic pollutants (COD, BOD, humic acid, volatile phenols), nitrogen substances (ammonia nitrogen NH₄⁺-N, nitrates), heavy metals, inorganic salts, color and odor from leachate.
Removal of organic matter
Removal of organic matter (COD, BOD, humic acid, phenols, surfactants): Adsorption of small molecule organic matter that is difficult to degrade and reduction of COD.
Color and odor removal
Removal of color and odor (humic acid, ammonia gas, volatile organic compounds (VOCs)): Improvement of effluent color and removal of odor molecules.
Removal of nitrogen
Removal of trace nitrogen substances (NH₄⁺-N, NO₃⁻): Partial adsorption of ammonia nitrogen and organic nitrogen is possible, but the effect is limited and it is not the main removal method.
Removal of heavy metals
Removal of heavy metal ions (Zn²⁺, Pb²⁺, Cd²⁺, Cu²⁺): Adsorption of heavy metals by surface complexation.
Stabilize the quality of effluent water
Stabilize the quality of effluent water: prevent effluent water from failing to meet standards due to load fluctuations, and play a role of “buffering” and “polishing”.
Protect the subsequent membrane system
Protect the subsequent membrane system: reduce membrane pollution, extend membrane life, and adsorb colloids and organic matter in the water before the membrane.
What is Activated Carbon For Leachate Treatment?
Heycarbons can also be customized according to your specific needs.
Heycarbons Best Activated Carbon For Landfill Leachate
Coal granular activated carbon is often used in leachate treatment facilities such as filter towers and adsorption towers for landfill leachate. It has strong adsorption capacity, can be repeatedly regenerated, and has a long service life; the particle size and pore structure design enable it to efficiently adsorb organic pollutants and heavy metals. The specifications of coal-based granular activated carbon are as follows:
| Project | Specifications |
|---|---|
| Mesh Size | 8*16, 12*40, 8*30 |
| Iodine value | min. 900mg/g |
| Moisture | max. 5% |
| Ash | 8-15% |
Custom Heycarbons Activated Carbon For Landfill Leachate
Heycarbons provides a full range of activated solutions at competitive prices.
What Clients Say on Our Activated Carbon
Custom Heycarbons Activated Carbon For Landfill Leachate
Heycarbons has proudly served the activated carbon industry with high-quality products since 2005, Heycarbons can customize your coal activated carbon for your project.
- Customize different raw materials according to different applications.
- Cost-effective solutions customized according to customer applications. such as size, moisture, ash, iodine value...
Call Us
+86-180 3788 5195
Our Email
info@heycarbons.com
Heycarbons Other Activated Carbon Solutions
Drinking Water treatment
Heycarbons provide 8*16, 8*30, 12*40, 30*60, 50-150 mesh high iodine value low ash granular carbon for water treatment and water device – CTO, UDF.
Waste water Treatment
Heycarbons supply of granular and powdered activated carbon for wastewater treatment to remove COD, BOD, heavy metals, organics, iodic acid, odors, hydrocarbons, color, etc.
VOCs Removel
Our activated carbon can help remove volatile organic compounds (VOCs) from the air by removing contaminants and impurities.
Gold Recovery
Provides high iodine 6-12, 8-16mesh coconut shell granular carbon for gold mining. (CIC, CIP, CIL)
Air Purification
Heycarbons provide 4mm, 0.9-8mm pelleted and impregnated pellet activated carbon, and granular carbon for various exhaust gas treatment, vapor recovery, VOCs removal, biogas H2S removal, etc.
Solvent Recovery
Heycarbons provide EAC carbon for high-end air purification or various gas solvent recovery, such as benzene, toluene, and other solvents, Dichloromethane solvent recovery, and tape factory solvent recovery.
Catalyst Carrier
A special process, adding a Special substance in Pellet (Extruded) activated carbons, also named Catalytical activated carbons, used for acid gas treatment such as H2S, water washing regeneration, high strength
Food Purificaion Decolorization
Heycarbons provide 8*16, 8*30, 12*40 mesh bituminous or briquetting activated carbon for food and water decolorization and purification, such as Sugar, MSG, Juice and wine, Edible oil, glycerin, Sewage decolorization, Corn starch sugar, amino acid, etc.
Steps to Custom Heycarbons Activated Carbon For Landfill Leachate
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
Heycarbons know you need to receive the product as soon as possible, after rigorous quality checks and protective packaging, by fedex shipping.
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