Iron and manganese removal filter

Operating principle

The dual purification process of aeration oxidation+manganese sand catalytic adsorption is adopted for the iron and manganese removal filter to specifically treat soluble iron and manganese ions in water. When the raw water enters the equipment, the dissolved ferrous iron and manganese divalent in the water are oxidized into insoluble ferric iron and manganese tetravalent solid oxide by fully dissolving oxygen through the aeration device.

The oxidized Fe-Mn precipitate is deeply retained and absorbed by the high-precision manganese sand filter layer, so as to completely realize solid-liquid separation, effectively reduce the Fe-Mn content in the water body, and produce clean water without rust odor when meeting the standard. The equipment is equipped with a full-automatic backwash system, which can regularly wash the oxide impurities deposited in the filter layer, restore the catalytic filtration performance of the filter material, avoid the hardening and blocking of the filter layer, and ensure the long-term stable and efficient operation of the equipment.

Equipment configuration

The whole machine is designed in a closed and integrated manner, with uniform water distribution, no dead corner in filtration and durable pressure bearing. The whole set of industrial configuration is suitable for 24h continuous water purification. The core configuration is as follows:

• High-strength filter tank body: carbon steel rubber lining anti-corrosion or food grade stainless steel material can be selected, which is integrally welded and formed, pressure and corrosion resistant, anti-seepage, no leakage, no fear of underground water acid and alkali fluctuation, and no secondary pollution of water quality.
• Special manganese sand catalytic filter material: high content natural manganese sand filter material is selected, with high catalytic activity, strong oxidation capacity, washing resistance, not easy to be pulverized, stable iron and manganese removal efficiency, long service life, suitable for various types of high iron and manganese raw water.
• Aeration dissolved oxygen system: built-in forced aeration device can quickly increase the dissolved oxygen content of water, accelerate the oxidation reaction of iron and manganese ions, greatly improve the filtration and purification efficiency, and adapt to the over-standard water quality of high concentration iron and manganese.
• Full-automatic multi-way control valve: intelligent electric/pneumatic control valve, automatically completing the whole process of filtration, aeration, forward washing, backwashing and blowdown, supporting timing and differential pressure start and stop without manual intervention.
• Uniform water distribution and collection system: upper and lower multi-layer filter cap+porous water distribution structure, uniform water flow distribution, no bias flow, no short circuit filtration, give full play to the adsorption and catalytic performance of manganese sand filter material, more thorough filtration.
• Pressure monitoring instrument: the front and rear high-precision pressure gauges monitor the pressure difference inside and outside the tank in real time, accurately judge the blocking status of filter materials, intuitively master the operating conditions of equipment, and timely give early warning for maintenance.
• Optional supporting system: PLC linkage control, online water quality monitoring, gas-water combined backwashing and pre-settlement device can be installed, which is applicable to the working conditions of heavy iron and manganese exceeding the standard and high turbidity complex groundwater.

Product advantages

H6>Targeted purification to completely solve water quality problems

The professional design is aimed at the over-standard problem of iron and manganese in groundwater. It can effectively remove iron ions, manganese ions and rust impurities in the water, completely eliminate the yellowing, redness, turbidity and peculiar smell of rust in the water body. The effluent is clear and bright, completely complying with the standards for drinking water and industrial water.

H6>Stable catalytic effect, high filtration efficiency

Relying on the principle of independent catalytic oxidation of manganese sand, there is no need to frequently add chemicals, the oxidation filtration effect is lasting and stable, and there is no obvious attenuation in long-term operation. The purification effect is superior to that of common filtration equipment by continuously treating the high concentration iron and manganese over-standard raw water.

H6>Protect back-end equipment and reduce O&M costs

Intercept iron and manganese oxide and rust impurities in advance, effectively avoid blocking, corrosion and scaling of rear-end RO membrane, ultrafiltration membrane, pipeline and water pump, greatly extend the service life of precision equipment and pipe network, and reduce equipment cleaning, maintenance and replacement costs.

H6>Full-automatic intelligent operation, saving heart and effort

Full-process automatic circulation operation, automatic aeration, automatic filtration, automatic backwashing and blowdown, fault self-inspection, support 24-hour uninterrupted water supply, no need for specially-assigned personnel, and adapt to the large-scale water supply scene in the plant area and villages and towns.

H6>Wide adaptability and flexible customization

The equipment specification and filter material ratio can be customized according to the iron and manganese content, turbidity and water consumption of raw water. Either single unit or multiple units can be connected in parallel. It can not only clean water for small household, but also meet the centralized water supply demand of large industries, villages and towns, with strong adaptability under working conditions.

Application Scenario

The equipment focuses on the purification of iron and manganese in groundwater, accurately solving the problem of over-standard well water and groundwater quality. The core application scenarios are as follows:

• Centralized water supply project for villages and towns: transformation of rural well water and groundwater to solve the yellowing and rusty smell of drinking water;
• Industrial production water: pre-treatment of underground water in the plant, mine and plant area to prevent iron-manganese scaling and corrosion of equipment pipeline;
• Commercial water purification system: deep purification of campus, community, homestay, mountain spring water and well water;
• Pretreatment of purified water: reverse osmosis, ultrafiltration, iron and manganese removal protection filtration at the front of drinking water system;
• Agricultural/landscape water: farmland irrigation and landscape pool water purification to avoid the impact of excessive iron and manganese on the use effect.

Technical parameters

• Treatment water volume 1T/H - 300T/H (customized for multiple units in parallel)
• Core filter material High-activity manganese sand filter material
• The iron and manganese removal rate is ≥ 98%, and the iron and manganese content in the effluent meets the national standard
• Working pressure 0.2MPa - 0.4MPa
• Control mode Full-automatic timing/differential pressure dual mode backwashing
• Tank material: carbon steel lined with rubber for corrosion protection/SS304/SS316L stainless steel
• Operating temperature 5 ℃ - 45 ℃
• Applicable to raw water, groundwater, well water, spring water and slightly turbid surface water
• The content of iron and manganese in the inlet water is suitable for the conventional over-standard water quality (for serious over-standard, the enhanced model can be customized)

After-sales guarantee

Provide one-stop survey, customization, installation, operation and maintenance services for iron and manganese removal filters, and specifically solve the problem of excessive iron and manganese in groundwater:

• Free water intake detection and site working condition survey, and customized special filtration scheme according to the iron and manganese concentration and turbidity of raw water;
• The complete machine is delivered from the factory, installed and commissioned quickly on site, and the equipment operating parameters are calibrated professionally to guide daily operation and maintenance;
• One year warranty for the complete machine, special warranty for tank body, control valve, aeration system and other core parts, and lifetime technical support;
• Hour all-weather after-sales response, quick remote troubleshooting, and on-site maintenance by nearby engineers to ensure continuous water supply;
• Provide lifelong manganese sand filter material replacement, filter layer cleaning, tank maintenance, system upgrading and other value-added operation and maintenance services.