Inclined Plate Media | Honeycomb Inclined Tube | Ethylene-Propylene Copolymer Inclined Plate

Working Principle The media is installed in the settling tank at an angle, usually around 60 degrees. Wastewater moves slowly through the channels while suspended particles travel forward with the flow and settle downward at the same time. Because the channels are shallow and have a small hydraulic radius, particles only need to settle a short distance before hitting the plate surface, then slide down the incline into the sludge hopper at the bottom. Flow inside the channels stays laminar, so settled sludge doesn't get stirred back up. The sludge is discharged periodically, and clear water overflows from the top. Application Fields 1.Municipal wastewater: solids separation in primary and secondary clarifiers. 2.Industrial wastewater: settling treatment in chemical, printing and dyeing, and papermaking industries. 3.Water treatment: flocculation and settling tanks in water plants. 4.Water reuse: settling and separation units in advanced treatment. FAQ Q1: What material is inclined plate media usually made of? A: Ethylene-propylene copolymer, PVC, and FRP are the common ones. Ethylene-propylene copolymer resists acids and bases, ages well, lasts a long time, and sits at a mid-range price—so it's the most widely used. PVC costs less but gets brittle as it ages. FRP is strong and corrosion-resistant but pricier, so it's mostly used where requirements are higher. Q2: What's the difference between inclined tubes and inclined plates? A: Inclined tubes have honeycomb-shaped hexagonal channels, while inclined plates are parallel corrugated sheets. Tubes have isolated channels, so flow is more stable and settling works better—but they're harder to make and install, and they cost more. Plates are simpler, easier to install, and cheaper, but sludge tends to build up between the sheets and needs periodic flushing. The principle is the same for both; which one you pick mostly comes down to water quality and budget. Q3: Why is the installation angle usually 60 degrees? A: If the angle is too shallow, sludge doesn't slide down well and piles up on the plate surface, eventually clogging the channels. If it's too steep, the height requirement goes up and the effective settling area drops. 60 degrees is the usual practice—it lets sludge slide down smoothly while balancing settling performance and tank height. The exact angle also depends on sludge properties and tank conditions.