Next™Sand Silt, Sediment and Turbidity Removal Media - 1 cu.ft ~ 55 Lbs.

High‑Density Filtration Media

• NEXT‑Sand is a heavy, high‑purity alumino‑silicate mineral with a bulk density of ~55 lbs/ft³, significantly heavier than standard multimedia blends.

• Its weight and hardness require strong backwash flow rates to properly expand, lift, and clean the media bed.

High Backwash Flow Requirements

• Due to its density and microporous structure, NEXT‑Sand requires 13–22 gpm/ft² backwash flow depending on water temperature.

• Systems must be sized with adequate pump capacity and proper drain line diameter to ensure full bed expansion (40–50%).

• Correct backwash flow is essential to prevent media fouling, channeling, and turbidity breakthrough.

Superior Filtration Performance

• Provides 3–5 micron nominal filtration, outperforming traditional multimedia (8–15 micron).

• Delivers high surface loading rates (12–20 gpm/ft²), enabling smaller tanks to achieve higher flow rates.

• Excellent turbidity reduction for silt, clay, ultrafine particulates, and SDI improvement.

High Capacity & Long Media Life

• Full‑depth filtration throughout the entire bed provides 2–3× the dirt‑holding capacity of multimedia.

• Media is not consumed during operation and typically lasts 5+ years with proper backwashing.

Used in WECO NEXT-Series Backwash Filters

• NEXT‑Sand is the filtration media used in:

  • WECO NEXT‑0948

  • WECO NEXT‑1054

  • WECO NEXT‑1252 / NEXT‑1354 / NEXT‑1465 / NEXT‑1665

• WECO can manufacture custom NEXT‑Sand backwash filters for residential, commercial, industrial, and municipal applications.

Ideal Applications

• RO pretreatment (excellent SDI reduction)

• Cooling tower filtration

• Municipal pressure filters

• Wastewater polishing

• Carwash reclaim systems

• Irrigation water clarification

• Precipitated metals removal (iron, manganese, etc.)

Technical Advantages

• Microporous structure increases surface area (25 m²/gram) for enhanced particulate capture.

• Hydrophilic surface improves wetting and filtration efficiency.

• High void volume (55%) allows deeper penetration of suspended solids.

• Thermally stable up to 500°C.

• Uniformity coefficient of 1.7 ensures predictable hydraulic performance.

Operational Characteristics

• Service flow: 12–20 gpm/ft²

• Backwash flow: 13–22 gpm/ft² (temperature dependent)

• Backwash duration: 5–15 minutes

• Bed expansion: 40–50%

• Bed depth: 30–48 inches, depending on tank size and application

• Backwash frequency: Delta‑P determined (based on pressure drop)