Removing iron and/or manganese from water supplies manganese sand filter

Product Overview

Description

Iron and Manganese Removal filter

 

 

Introduction 
Iron and manganese (Fe/Mn) are common in groundwater supplies used by many Forest Service water systems. Iron is the more frequent of these two contaminants, but they often occur together. High levels of these contaminants can result in discolored water, stained plumbing fixtures, and an unpleasant metallic taste to the water. This can lead to employee and visitor complaints about the water. Iron deposits can buildup in pressure tanks, storage tanks, water heaters, and pipelines. Iron-deposit buildup can decrease capacity, reduce pressure, and increase maintenance. These deposits can also cause self-closing valves to stick. 
High levels of iron and manganese do not pose any known adverse heath risks. The U.S. Environmental Protection Agency (EPA) has not set maximum contaminant levels (MCL) for iron and manganese in the National Primary Drinking Water Regulations. Secondary maximum contaminant levels (SMCL) recommended in the National Secondary Drinking Water Regulations are set for esthetic reasons and are not enforceable by EPA, but are intended as guides to the States. The SMCL for iron is 0.3 milligrams per liter (mg/L) and the SMCL for manganese is 0.05 mg/L. States may adopt SMCLs as guidelines or enforce them as contaminants. FSM 7400-Public Health and Pollution Control Facilities requires all Forest Service water systems to comply with the SMCLs.

Manganese sand filter is the use of domestic quality, grain density, mechanical strength, chemical activity, not broken, do not dissolve in water, natural manganese ore. It has a water filter ideal grading scale, it has the largest volume in the unit specific surface area, the strongest interception capacity of the largest and smallest catalytic oxidation backwash churn. Manganese sand filter appearance of rough brown or light gray, commonly used in drinking water in addition to iron, manganese filters, water treatment effect is very good. (Note: MnO2 ≥ 35% either in addition to iron, but also manganese, MnO2 ≤ 30%) can only be used for groundwater in addition to iron) 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.

 

Purposes and working principles

Ground water in addition to iron and manganese filter is mainly applied to the high concentration of iron fierce groundwater removal of iron and manganese, industrial demineralized water, demineralized water pretreatment. The device using the aeration oxide, manganese sand catalysis, adsorption, filtration in addition to iron manganese removal principle, the aeration device to the oxygen in the air to water Fe2 + and Mn2 + oxidation into water-insoluble Fe3 + and MnO2 in the combination of natural manganese sand catalysis, adsorption, filtration, removal of iron and manganese ions in water. 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 +

Technical performance

Gas-water mixing time :3-5min;

filter filtration speed :10-14m / h;

 backwashing strength :16-18L / m2.s;

filter layer thickness :1.0-1 .2 m;

inlet pressure ≥ 0.06Mpa;

equipment to withstand pressure :0.06-1 .0 Mpa.

Scope: water Fe2 + ≤ 20mg / L,

Mn 2 + ≤ 10mg / L,

the effluent Fe2 + ≤ 0.3mg / L,

Mn 2 + ≤ 0.1mg / L.

 

Product Features:

Ground water iron and manganese sand filter

Our company has developed an integrated and efficient energy-saving water treatment equipment.

1, Aeration part: without aeration tanks and aeration tower does not need to dosing chemicals and catalysts, just filling a small amount of air, which reduces operating costs.

2, The main part of the strong oxidizing reaction, separation desander, packet suspension pool filter technology in the one unit, unique structure.

3, The filter section: Since inside the filter has its own backwash device does not need to be configured. Backwash pump and backwash the pool, can reduce the area of the project, reduce the engineering investment.

4, Pressure filter backwash, high strength, rinse the filter layer evenly, do not form completely dead ends, recoil time is short, long filter cycles, to extend the service life of the filter.

5, The device can be directly water supply pipe network to the user, without with clean water tank and two pumping stations, reduce equipment investment, avoid secondary pollution.