Application of coconut shell activated carbon in drinking water treatment

Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. Germs and chemicals can get in drinking water at the water’s source or in the distribution system after the water has already been treated. Harmful germs and chemicals can get in the water from many sources, including: Fertilizers, pesticides, or other chemicals that

 

Drinking water is water that is used in drink or food preparation; potable water is water that is safe to be used as drinking water. Germs and chemicals can get in drinking water at the water’s source or in the distribution system after the water has already been treated. Harmful germs and chemicals can get in the water from many sources, including: Fertilizers, pesticides, or other chemicals that have been applied to land near the water.

 

 

Common contaminants in drinking water include:

Sediment & Turbidity、Total Suspended Solids、Scaling、Iron、Manganese、Hydrogen Sulphide、PFOA/PFOS、Chloramines、Disinfectant By-products、Chlorine、THMs、Low pH、Organic Matters、Ammonia、Odour & Colour、Bacteria & E. Coli、Lignin、Humic substances、Radioactive、Substances、Heavy Metals、Arsenic、Uranium、Selenium、Aluminum、Barium、Chromium、Boron、Copper、Silica、Lead、Sewage & Wastewater、Phosphates、Nitrates、Algae、Hormones、Oil in Water、Cyanide、Pathogens & Pesticides、Pharmaceutical、Products、Chemicals.

Water purification filter materials, including: water purification filter materials: fiber balls, fruit shell filter materials, selected anthracite filter materials, refined quartz sand filter materials, magnetite filter materials, manganese sand filter materials, limestone filter materials, ceramsite filter materials, pebbles, zeolite, garnet, medical stone, corundum, rare earth porcelain sand, activated alumina, coconut shell activated carbon, fruit shell activated carbon, wood powdered activated carbon, coal columnar activated carbon, coal granular carbon!

 

Drinking water filter materials mainly include the following categories:

Activated carbon: Activated carbon is an excellent adsorbent, which is often used to remove odor, residual chlorine and organic pollutants in water. It adsorbs harmful substances on the surface of activated carbon through adsorption, thereby achieving the purpose of purifying water quality.

RO reverse osmosis membrane: Reverse osmosis is a highly efficient filtration technology that removes tiny particles, heavy metals and dissolved salts in water through a semi-permeable membrane. The RO system can provide relatively pure water and is suitable for environments that require high water quality.

Ultrafiltration membrane: Ultrafiltration membrane is a physical filtration technology with a small pore size that can effectively block bacteria, viruses and large particle pollutants, providing relatively clean water.

Electrolytic negative ion technology: Some advanced water dispensers may use electrolytic negative ion technology to remove odor, harmful gases and microorganisms in water through the action of negative ions.

Intelligent monitoring system: Some water dispensers are equipped with intelligent monitoring systems that can monitor the use of the filter element and remind users when the filter element needs to be replaced to ensure the filtration effect.

The choice of these filtration materials and technologies depends on the user's needs, water quality and usage environment. Regular replacement of the filter element is a key step to maintain the filtration effect and the normal operation of the water dispenser. When selecting and using a water dispenser, users are advised to read the product manual carefully to understand the performance and maintenance requirements of the filtration system.

1. Fruit shell activated carbon

Filter impurities, absorb odors, and filter rusty water;

2. Medical stone

After dissolving in water, it can release more than 20 trace elements such as zinc and strontium that are useful to the human body. It has a strong adsorption capacity for harmful substances in water such as arsenic, mercury, lead, and cadmium;

3. Quartz sand

It has the effect of high filtration accuracy and clear and transparent filtrate;

4. Garnet It has high density and does not contain organic matter.

It can be used as a sand layer filter material, with anthracite on the top, quartz sand in the middle, and garnet at the bottom. It is used in industrial filtration systems and swimming pools to eliminate pollution and purify water quality.

As a water filtration medium, the unique density and hardness of garnet make it widely used in modern mixed media or multi-layer water filtration systems, replacing traditional quartz sand filters. The use of garnet can improve filtration efficiency and prevent the filter layer from being disturbed and releasing dirt when backflow occurs, affecting water quality.

5. Magnetite

High-density ore filter material, with a large specific gravity, so the particle size can be small, which is conducive to controlling the water quality after high-speed filtration; high strength, fast filtration speed, and not easy to mix layers during backwashing. It is also very effective in removing iron, manganese, and fluorine.

6. Silver-loaded activated carbon

Can remove odors and harmful substances such as mercury, benzene, phenol, chromium, arsenic, lead, and pesticides in water, relying on the silver ion Wendongli effect to inhibit bacteria and sterilize;

7. Zeolite (activated coral sand)

Absorb odors and filter impurities;

8. Far-infrared sintered ball

It has an activation function, and through far-infrared radiation, it turns large molecular groups in the water into small molecular groups. Thereby increasing the oxygen content in the water and making the water have better biological activity;

9. Coconut shell activated carbon

Filter impurities, absorb discoloration and odor, increase the filtration process of water, and make the filtered water clearer and purer;

10. PP filter element, melt-blown PP filter element, wire-wound filter element

The commonly used ones are 5μm and 1μm. Filter to remove impurities, rust, etc.;

11. Ultrafiltration membrane filter element

Filter macromolecules in water. Generally, impurities, organic matter, pesticides, etc. in water canbe removed except for some inorganic salt ions.

12. Sodium filter membrane

It has the same function as ultrafiltration membrane and is mainly used in industrial production, drinking water and other industries.

13. Reverse osmosis membrane

Reverse osmosis refers to the separation of solutes and solvents in a solution under a pressure higher than the osmotic pressure of the solution by means of the selective interception of a reverse osmosis membrane that only allows water molecules to pass through, thereby achieving the purpose of pure water. The reverse osmosis membrane is composed of polymerized cellulose with a highly ordered matrix structure. Its pore size is 0.1 nanometers to 1 nanometer, that is, one billionth of a meter (equivalent to one thousandth of the size of E. coli and one percent of a virus). Therefore, its function is to remove inorganic salt ions, viruses and other things harmful to human health in the water (correspondingly, some ions that are beneficial to the human body will also be removed; but don’t worry, because the removal rate of reverse osmosis membranes used in home machines is currently at a maximum of about 92%, and it will not remove all inorganic salts, such as sodium, calcium, magnesium, iron ions, etc.; and don’t worry, based on the relationship between pore size, heavy metal ions and viruses and bacteria can be completely removed).

14. Volcanic rock filter

The reservoir properties of acidic volcanic rock filter are poor, with porosity between 2% and 18.8%, an average porosity of 5.3%, a permeability of 0.01~13mD, and an average permeability of 0.35mD. (The porosity of volcanic rock filter is closely related to water quality) and belongs to low-porosity and low-permeability reservoirs (according to the research report on the evaluation technology of volcanic rock side wells in the Kaiping area of ​​Xingcheng, Qingshen Gas Field). The reservoir space types of the young layer are complex, and the main reservoir space types include pores, residual pores after pores are filled, almond-shaped internal pores, micro-voids caused by devitrification of rhyolitic glass in spherulite rhyolite, feldspar dissolution pores, volcanic ash dissolution pores, carbonate dissolution pores, quartz tendon fragment dissolution pores, gravel pores, shrinkage joints around spherulites and between pulls, cracks and micro-cracks, etc. Moreover, the above types of reservoir spaces generally do not exist alone, but often appear in a certain combination. This makes the porosity interpretation more difficult.