Name：
Water Treatment 50T / H Category: hollow-fiber ultraf
Classification：
Hollow-fiber ultrafiltration d
Manufacturer：
Dow environmental protection
Key words：Water treatment, water treatment equipment, water treatment company, the electronic ultra-pure water, deionized water equipment, water filtration equipment, pharmaceutical water purification equipment, glass cleaning water...
1, multi-media filter
Devices usually have a water filter, water distribution systems, major equipment, and sometimes used the device into the air. There are a variety of peripherals in the filter pipes and valves necessary. Mechanical filters are commonly used fiberglass tanks, stainless steel and carbon steel lined coating made of commonly used filters filter are: quartz sand, marble, anthracite, manganese ore and dolomite, the granule diameter of about 0.5- between 1.5. Filter can be filled with one kind of filler, but also filling two or three fillers.
Filter operation is as cyclical, each cycle can be divided into filters, backwash and flushing three steps.
The purpose of backwashing the filter layer is to remove accumulated dirt, cutting pollution to restore the ability of the filter layer. It is the filter to run an important step. In order to counter the effect of a good wash in the backwash Shihai often leads to compressed air.
Normal operation of the filter flow rate of about 8 ~ 10m / h, when it runs into the water flow filtration layer to allow the pressure drop limit, stop filtering operation, start backwashing. At this point the filter the water discharged into the upper edge of the filter layer so far, and then into the strength of 18-25L / (m². S) of compressed air, 3 ~ 5min after the purge, while continuing to supply air in the case, within the filter into backwash water, the intensity filter layer expansion rate should be about 40% to 50%. Finally, water is the first pass down to the water before the official start filtering operation.
This filter, in addition to water through the filter layer according to the pressure drop to determine the need for cleaning, but also can be run in accordance with a certain time, to be cleaned. Allowed to run its cycle, should be obtained by adjusting the test. Filters should not be frequently suspended solids that will have to wash through when the parties should be slightly in advance, otherwise the filter layer is not easy to clean, filter the long run will produce agglomeration. Generally allowable pressure drop of about 0.5bar.
2, activated carbon filters
Major role in activated carbon filter to remove organics and residual chlorine in water can also remove the water smell, color and so on.Typically, the activated carbon are advised to use high-quality shell class to have to ensure good mechanical strength and fast absorption, adsorption capacity, activated carbon has a dual role: first, adsorption; second filter, activated carbon surface of a large number of hydroxyl and hydroxyl functional groups , the organic nature can be to a variety of chemical adsorption, and electrostatic force of gravity, therefore, activated carbon to remove the humic acid, Fuwei acid, lignin sulfonate and other organic substances; organic pollutants (such as phenolic compounds); You can also remove the residual oxidant in water, free chlorine, odor, harmful gases.Activated carbon can also remove heavy metal ions in water, water in the Hg, Cd and Cr.
Activated carbon filters are generally run a flow rate of 10-20m / h.
As the activated carbon filter inside the filter and the porous structure of activated carbon adsorption of nutritious organic matter, providing breeding environment for the bacteria, therefore, activated carbon filters require periodic disinfection or chemical treatment.
Backwash mode: joint air and water backwash, backwash intensity of 0.5m ³ / (m². S), backwash time for 10-15min (or backwash flow rate of 20-30m / h, backwash time 4-10min, 3-6 days a backwash, the filter layer expansion rate of 30% -50%).
Carbon life: typically 2-3 years, renewable carbon saturated or replacement. Just loaded activated carbon, we must first filled with water, soaked 24 hours to fully wet, remove its internal pores when carbon particles in the air, the carbon material does not float in water, then seal the hole, pressure test and is wash, wash away the carbon in anthracite dust, wash water to colorless, non-fine particles, can be put into use.
