Comet fiber filter water treatment filter material comet filter price

Comet fiber filter is a new type of filter material is made in the research ball rolling on the basis of the fiber bundle type, not easily spread. It has the advantage of high precision fiber filter filtration and interception large, but also has a particle filter backwash clean and high water consumption advantages and filter bed porosity distribution formed by that media close to the ideal filter structure. In the filter bed cross section (horizontal) on porosity distribution, ensuring consistency when filtering water channel size, the direct effect is uniform interception volume, flow short circuit is avoided. In the filter bed profile (vertical) top-down gradually reduced porosity distribution, porosity profile along the filter bed goes big small gradient distribution, the structure is very conducive to the effective separation of suspended solids in water, namely filter bed portion easily desorbed particles in the lower part of the filter bed narrow channel is captured and entrapped. When filtering, a large proportion of the nucleus of the tow compaction role to play, but due to the small size of the nucleus, filter section void distribution uniformity little effect on the ability to improve the interception of the filter bed. Backwash, since the proportion of the nucleus and tail tow difference, tail fiber with the backwash water and spread out and swing, resulting in a strong rejection of the drag force, the collision between the media also contributed to the fibers the water, by mechanical forces, irregular shape filter makes filter backwash water generated under the action of the rotating life 1-2 times longer than ordinary fiber ball is not easily dispersed higher precision filter backwash easier ! Comet fiber filter media mode of operation for the pressure type. Head loss during the test filter bed is in the operating pressure range, so the maximum time from the water leakage turbidity filter control. And other fiber filter is different, laboratory plexiglass filter found in the area comet fiber filter bed section of about 150-200mm of filter, filter layer loose suspension concentrate more, increasing the retention of suspended matter between contacts chance of collision, its role is similar clarifier suspension area. It was found in this area is also a great head loss, show increased utilization of the entire filter layer, which is a major cause of comet fiber filter pollutant carrying capacity of the filter bed. Also due to the special shape of the Comet filter, so that the backwash effect is good, it is far less than the rate of the remaining mud clogging fiber ball filter, thereby increasing the filter bed interception amount, maturity deep bed filter backwash filter after Filter early stage there is a quality of instability, called the filter bed filtration maturity or early stage. Filter the beginning of the filter backwash water replacement rate of the size of the pore structure of the filter layer compression speed and lateral filter bed determines the length of maturity. Higher filtration rate not only comet fiber filter layer filter backwash water accumulates quickly replaced out, while enabling rapid compression filter layer to achieve sufficient density; and small comet fiber filter scale, the structure is not symmetry and other factors, making the pore structure of the filter bed in the lateral uniformity has been significantly improved. First stage filter fiber ball filter is about 1h, comet fiber filter within 20-100m / h speed range filter filter early time up to 3min, water turbidity drops to 1ntu less backwash seen from Table 5, Under the same conditions filtration rate and water turbidity, fiber ball filter backwash water consumption rate of 5-8%, while the comet fiber filter backwash water consumption rate of 1-2%. Backwash filter through observation window found while media were dispersed after a single filter in the joint action of water and air flow in the filter movement, due to tail, the nucleus density difference and asymmetric structure the impact of fiber spreading tail and swing, resulting in a strong rejection of drag force, the solid particles adhered easy detachment. Where the tail is easily spread because of fibers in each filter contains a small number, usually 24 shares × (24-48) fiber filaments, so weak backwash mutual restraint between the filament and the wire. Filter bed head loss filtration rate increases or increases water turbidity, filter layer total head loss is growing rapidly with time. Comet filter total head loss with the filter time is not strictly linear relationship was, because the filter bed resistance in addition to the filtration rate and increased water turbidity increase caused the increase, the amount of pollutant the filter bed causes further compression, The porosity of the filtration bed decreases, the head loss increases. Filter media filling volume filling amount is too small, it will penetrate the filter bed early, turbidity value increases rapidly reach the desired effect; on the contrary excessive filter loading capacity filled, will create unnecessary head loss, and at the same backwash conditions, reduce the degree of flow filter, the impact of the backwash effect.