Carbon Steel Multi-Media Filter (Supplier)

1. Introduction to the working principle of carbon steel multi-media filter Carbon steel multi-media filters, as the name suggests, are mechanical filters filled with two or more filter media. They are commonly used in the water treatment industry. They can be two-, three-, or four-media, but the most common are two-layer filters, typically consisting of anthracite and quartz sand, or activated carbon and quartz sand. Combinations such as manganese sand and quartz sand can also be used depending on the water quality requirements.

2. Instructions for selecting fillers for multi-media filters Common filter media include anthracite, ceramsite, quartz sand, and activated carbon. Quartz sand boasts high density, small particles, and a low price. Anthracite, with its low density, strong pollutant interception capacity, large particles, and relatively affordable price, combines the retention properties of quartz sand with the adsorption properties of activated carbon and is commonly used in sewage treatment and oil removal. Activated carbon, with its low density and strong deodorization and decolorization capabilities, is relatively expensive and is generally used in drinking water. Besides its aforementioned benefits, it can also improve the taste of water. However, anthracite is rarely used in drinking water.

3. Instructions for filling filter media of carbon steel multi-media filter The filter media design for the filter layer of a carbon steel multi-media filter generally requires that the particle size of the lower filter media be smaller than that of the upper filter media to ensure the effectiveness and full utilization of the lower filter media. The density of the upper layer should be small to ensure stratification recovery after backwashing. If the density of the upper layer is small, the filter media of the upper layer will sink to the lower layer after backwashing. Taking a two-layer filter bed as an example, the upper filter media has the largest particles and is composed of lightweight filter media with low density, such as anthracite and activated carbon; the lower filter media has a small particle size and high density, and is generally composed of quartz sand; the upper filter media plays a coarse filtration role, with low head loss under resistance, and the lower filter media plays a fine filtration role with strong sewage interception capacity. In this way, the role of the multi-media filter bed is fully utilized, that is, the characteristics of low head loss and good filtration effect, and the advantages of each medium are fully utilized.

4. Multi-media filter tank structure Multi-media is divided into: carbon steel multi-media filter or stainless steel multi-media filter, anti-corrosion measures: internal coating of epoxy resin or internal lining of natural rubber for anti-corrosion, water distribution system includes hanging basket water distribution, dome plate water distribution, stainless steel tube water distribution, flat plate water distribution, water distribution caps include ABS mushroom type and wire-wound cylindrical water distribution, among which the tube water distribution and the dome plate water distribution have a cushion layer under them, which is composed of large pebbles or large quartz sand. This is mainly because they have large gaps and low resistance, which is convenient for collecting water and backwashing.

5. Multi-media filter quotation Multi-media filter quotes. Our factory produces multi-media filters, primarily by calculating steel costs, labor costs, taxes, and a reasonable profit margin to determine the price of quartz sand filters. The main materials include the upper and lower heads, upper and lower water distributors, manholes, discharge ports, legs, lifting lugs, welding wire, material loss, etc., as well as internal anti-corrosion treatment and external surface treatment (carbon steel exterior is primed with anti-rust paint, and topcoat can be applied according to customer requirements; stainless steel exterior is generally polished or matte-finished). The quote for a complete set of multi-media filters is calculated based on the configuration of the main pipes and valves (such as backwash, forward wash, and operating pipes and valves) and filter media according to customer requirements. We can also provide drawings and instructions for the piping and valves for the purchaser to connect independently. We provide the filter media types and specifications, and the purchaser can purchase them independently, thus saving the purchaser's purchase costs.

6. Technical parameters of carbon steel multi-media filter

1. Design filtration rate: 8-12 m/h. When the head loss is about 5 m, backwash regeneration is required (generally by reading the inlet and outlet pressure difference at 0.05 MP).

2. Backwash intensity: 10-15L/second•square meter.

3. Flushing time: 5-7 minutes

4. Water inlet pressure: ≥0.4Mpa Backwash water inlet pressure: ≥0.15Mpa

5. The expansion rate is 30%-50%.

7. Carbon Steel Multi-Media Filter Selection Parameter Comparison Table

Our company specializes in the production of stainless steel and carbon steel multi-media filters. The multi-media filters are supplied to major cities across the country such as Shanghai, Nanjing, Guangzhou, Shenzhen, Fuzhou, Xiamen, Chengdu, Chongqing, Lanzhou, Tianjin Nanchang, Wuhan, Changsha, Beijing, Zhengzhou, as well as Southwest, Northeast and North China regions, and have supporting services from freight logistics companies.

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