Iron and Manganese Removal plus (ZMIR)

Iron and Manganese Removal plus (ZMIR)

ZIMR is state-of-the-art filtration media dedicated to iron and manganese removal, independently developed and produced in China. The product is fabricated from natural zeolite substrate surface-modified with high-purity manganese dioxide catalytic coating. Proprietary formulations and unique structural characteristics deliver outstanding physical and catalytic properties: it boasts low bulk density (1.05 g/cm³), ample contact surface for filtration, prolonged operational longevity, and stable 5-micron fine filtration accuracy. This media is widely applicable across diverse water treatment processes, capable of high-grade filtration, decolorization and deodorization, removal of iron, manganese and hydrogen sulfide, plus effective reduction of arsenic, zinc, copper, lead and other heavy metal pollutants.

1·Key properties:

Appearance	Black Granules
Odor	Odorless
Size	0.5-1.5mm(regular grade)
Uniformity coefficient	≤1.7
Density	1.05g/cm³
High contact area	300m²/g
Filtration	≤5 microns

2·Core advantages：

ZIMR:10% high-purity Manganese dioxide (MnO2) coating on natural zeolite.

ZIMR delivers far more efficient oxidation and co-precipitation of impurities. For raw water containing ultra-high contaminant concentrations, H₂O₂ is recommended as the oxidizer to accelerate catalytic oxidation across the media surface. Standard oxidizing chemicals including chlorine and potassium permanganate may also be adopted where applicable.

3·Work principle：

1.Catalytic Oxidation

The manganese dioxide coating acts as a permanent catalyst. Without continuous chemical dosing,it converts soluble divalent iron,manganese and hydrogen sulfide into insoluble solid precipitates.These solid impurities will be washed away easily during regular backwash.

2.Heavy Metal Adsorption

The porous zeolite skeleton can effectively trap arsenic,lead,radium and other trace toxic heavy metals in water,meeting strict drinking water safety standards.

3.Physical Filtration

The uniform particle bed blocks sediment,rust and colloidal impurities to clarify raw water.

4·Recommended operating conditions：

Recommended water ph	6-10
Freeboard	30%-40%
Minimal bed depth	75cm
Service flow	10-20m/h
Backwash velocity	25-30m/h
Backwash time	15-20mins
Rinse time	2-3mins

Note:

1.When inlet water pH <6 or="">10, pre-neutralization treatments required to prevent chemical corrosion of filter media and tank liner.

2.Freeboard value 0.4 represents 40%of the total tank bed height,reserved for media expansion during backwash.Do not fill filter media over the limit.

3.Service flow 10-20 m/h:Lower velocity (10-15m/h)recommended for raw water with high turbidity,iron/manganese contaminants to achieve better filtration effect.

The backwash velocity and time differ according to the inlet water parameters.

Backwash guide

Control over the filter operation time.

Adjust the running cycle within 48 hours according to filter service time and recommended backwash & rinse settings. Or ensure the filter shall not run continuously for more than 72 hours before backwash.(once every two days to three days)

Step 1 Stop water production service

Shut off the inlet valve to stop normal filter service. Record the inlet & outlet pressure and current head loss value.

Step 2 Start backwash cycle (upward high-flow flushing)

Switch the control valve to Backwash mode. Adjust flow to the specified backwash flow rate in the vessel parameter table, ensure the media expands by 30%–40% and rolls fully. Standard backwash duration: 15-20 minutes.

Step 3 Fast rinse (forward flow)

After backwashing finishes, switch to fast rinse mode with moderate forward flow. Drain turbid residual dirt suspended in the pressure vessel. Fast rinse lasts 2–3 minutes.

Step 4 Slow rinse to settle media bed

Run low-flow slow rinse in service direction for 3–5 minutes. Let Katalox-Light media settle evenly and compact to form a uniform filter bed until outlet water runs completely clear.

Step 5 Restore normal service filtration

Close the rinse valve, switch back to Service mode, and restart normal water production. Check the initial head loss to confirm the filter works properly.