DC HDPE 07 For Municipal Wastewater, Industrial Wastewater

The DC07 MBBR Media is a compact, high‑performance biofilm carrier made from 100% virgin HDPE, designed specifically for Moving Bed Biofilm Reactor (MBBR) systems where space efficiency and stable biomass attachment matter most. What makes the DC07 stand out is its 7 through‑holes combined with a cross‑cut internal geometry — but that’s only half the story. The outer surface features strategically placed small protrusion (convex bumps or short ribs), which serve a purpose similar to the vertical ridges found on larger carriers. These surface bumps improve hydraulic mixing around each piece, prevent the media from packing too tightly, and create additional micro‑zones where young biofilm can establish without being scraped off by adjacent carriers.

The internal cross‑cut structure, together with the seven holes, forms multiple protected chambers where microorganisms can grow undisturbed by hydraulic shear. This design leads to faster start‑up times, better resistance to shock loads, and more consistent effluent quality. The added surface roughness from the convex bumps also improves initial biomass attachment — a detail that operators notice during the first weeks of operation.

With a specific surface area exceeding 400 m²/m³ and a void fraction well above 90%, the DC07 strikes a smart balance between biomass holding capacity and free flow of water and air. Oxygen transfer efficiency gets a real boost because the combination of holes and external bumps forces rising bubbles to take a longer, more tortuous path, increasing contact time with the biofilm. In everyday terms, this means reliable BOD/COD removal and stable nitrification, even in low‑temperature conditions (down to 5 °C) or challenging industrial effluents.

The media’s density is held tightly between 0.94 and 0.97 g/cm³, ensuring a well‑fluidized bed at filling ratios from 15 % to 65 %. Each cubic meter packs more than 118,000 pieces, giving engineers plenty of flexibility to dial in the exact biofilm surface area per reactor volume. Typical applications include municipal sewage upgrades, food processing wastewater, recirculating aquaculture systems (RAS), and high‑strength industrial waste.

Because the DC07 is injection‑molded from UV‑stabilized HDPE (available on request), it resists fouling, abrasion, and chemical attack across a pH range of 2–12. Operators often report less clogging compared to foam or sponge carriers, and the smooth‑enough outer contour — enhanced with gentle bumps rather than sharp edges — prevents excessive wear on reactor liners. Whether you are retrofitting an existing tank or designing a new MBBR stage, this media offers a proven, low‑maintenance solution backed by ISO 9001 and CE certification.

Q: Are you a trading company or manufacturer?

A: We are factory.

Q: How long is your delivery time?

A: Generally, it is 10-20 days if the goods are in stock. or it is 30-45 days if the goods are not in stock, it is according to quantity. 

Q: Do you provide samples? is it free or extra?

A: Yes, we could offer the sample for free charge, there are delivery cost to be paid by buyer.

Q: What is your terms of payment?

A: T/T L/C.