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How to removal iron and manganese in water treatment
There are various treatment processes that are used to remove iron and manganese from ground water for potable water supplies. Iron and manganese are typically found in groundwater in a dissolved state and the water may appear clear. While there are various less common treatment methods used (such as ion exchange), most treatment systems for iron and manganese oxidize the ferrous state (clear iron) to a ferric state so the solid particles can then be filtered out.
Iron and manganese removal in water treatment
· Iron or manganese removal commonly involves injecting chlorine or potassium permanganate, followed by filtration with sand or coated greensand media. Chlorine can affect the taste and odor of the water as well as involve high levels of maintenance and costs
· Most treatment systems for removing iron and manganese from groundwater sources use chlorine, oxygen or various other chemicals to oxidize the clear state of iron and manganese to an oxidized or solid form so the particles can then be filtered out. If complete oxidation occurs and if the oxidized floc is of suitable condition, a filtration system consisting of filter sand and anthracite is used.
· In place of filter sand, manganese dioxide filter media can be used. Manganese dioxide media are either naturally mined and in a solid granule form or manufactured by applying a coating of manganese dioxide on the surface of various types of granular filter media such as silica or greensand.
Large scale iron manganse remove filtration system.
Input Iron< 15mg/L, Manganes<10mg/L.
Output Iron< 0.03mg/L, Manganes<0.01mg/L.
Reach drinking water standard.
Manganese sand filter mainly used to reduce the water content of iron and manganese, ferromanganese total, some of our groundwater iron up 5 ~ 10mg / L, also have high to 20 ~ 30mg / L, manganese of up to 0.5 ~ 2.0mg / L, more than 2mg / L or each high 5 ~ 10mg / L is also a discovery . China's "drinking water standards" requirement, the iron content in drinking water should not exceed 0.3mg / L, manganese content of not more than 0.1mg / L, over time must be addressed.
Manganese sand filter is a strong antioxidant , to oxidation ferrous up oxidation role in water , usual used in drinking water in addition to iron and manganese removal filter device, groundwater for removing iron and manganese purification of water use.
10m3/hr iron manganese remover system in water treatment
Process flow
iron filter for well water filtration system process flow introduction
Difference use purpose use differece process/flow chat.
How it works:
Fe (Mn) of groundwater through aeration or adding an oxidizing agent, the water iron (manganese) ions begin oxidized manganese sand filter when the water flows through when contact occurs during filtration and the filter surface oxidation biochemical and physical adsorption interception , so that the water iron (manganese) ions precipitate removed. Especially in the treatment of micro process polluted groundwater manganese, iron, manganese bacteria not only can effectively remove, while ammonia as a nutrient source to the water for metabolism, the participation of the other bacteria, and to achieve the effect of ammonia.
Principle:
| Iron and manganese oxidation reaction in the following manner: |
| Iron oxide: Air: 4Fe2 + +3 O2 +6 H2O = 4Fe (OH) 3 ↓ |
| Manganese sand MnO Mn2O7 + Fe2 + + O2 + 6 H2O = 3MnO2 +4 Fe (OH) 3 ↓ |
| Manganese oxide: Mn2 + + O2 = MnO2 ↓ |
| Manganese sand Mn2 + + MnO2 • H2O = MnO2 • MnOH2O +2 H + |
Reverse Osmosis System process:
Raw water tank→ raw water pump→manganese sand filter→quartz sand filter →activated carbon filter→security filter→high pressure pump→ro system→pure water tank+UV sterilizer(ozone generator) +precision filter+ water supply point
Engineer Certification
Patents and ISO
Iron and manganese removal can separate the color from waster water.Example iron and manganese can remove the colour for dye waster water concentrate.
Advantage of iron and manganese removal in water treatment
1.Slow filtration to avoid speed filtration cause the output water quality is not clean and the water still content iron and manganese.
2.According the source water analysis report customized process to sure the output water meet WHO standard.
2. More functions with semi-automatic,automatic backwash operation to meet user needs.
3. The backwash water source recommend from treated water then can full flush thoroughly. System can automatically switched (special requirements).
4. It is customized according the user requirements. It can be a single filter unit or a combination of multiple filter units.
5.The shell and tubes are carbon steel Q235B by phosphate surface treatment with internal and external surface anti-corrosion.It can also be made of stainless steel.
Buying Guides for Iron and manganese removal filter in water treatment
To find the most appropriate iron and manganese for your use, please have the following information ready
· Product water flow rate ( m3/hr, m3/day, Liter/hr,GPM,GPD etc.)
·· Product water purpose(industry process or others)
· Feed Water TDS (Total dissolved solids). Is it from Borehole/salt/brackish/lake water
· Iron
· Manganese
· TSS(Total Suspended Solid)
· SDI(Silting Density Index)< 3
· Water must be free from oils and grease
· Chlorine must be removed
· Power (110/220/380V/415V/460V, 50 or 60 Hz) 3 phase.
· It is necessary to make water analysis reprot for borehole water,lake water, seawater.
· If soure water is tap water no need end to us TDS or water analysis report.
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