In China’s plastic raw material market, PVC granules have become a core material for construction, toys, daily necessities, automotive interiors and other industries, thanks to their excellent plasticity, corrosion resistance and cost efficiency. As ...

High-performance PVC pellets achieve breakthroughs in temperature resistance (-50°C to +125°C) and oil resistance through high polymerization, alloying, and additive optimization. They are driving application innovations in new energy vehicles, cables, industrial hoses, and other fields, while advancing toward functionalization and greener development.

In RAS projects, MBBR bio media is often overlooked, yet it plays a critical role in overall system efficiency. The right MBBR media delivers more than just energy savings—it enables superior ammonia control, faster system startup, lower maintenance, better fish growth, reduced operational risk, and a more compact design. Key benefits include higher biomass in less space, improved process reliability, reduced long-term operational burdens, and a healthier environment for fish. Choosing the right MBBR media is not a minor detail—it's a strategic decision that directly impacts RAS success. SmallBoss specializes in high-performance MBBR media designed for greater efficiency and lower costs.

I. Core Adaptable Processes 1. Injection Molding Process Core features: Strong mold adaptability, high product precision and outstanding mass production efficiency, suitable for small and medium-sized parts and precision parts processing; Adaptable p...

The MBBR process uses suspended carriers as its core component. Carrier specific surface area (typically 200–600 m²/m³), material (polyethylene/polypropylene), and fluidization performance directly determine treatment efficiency. High-quality carriers have a density of 0.95–0.98 g/cm³, enabling uniform fluidization with low energy input, fast biofilm formation, and no backwashing required. Carrier filling ratio ranges from 30% to 60% based on loading. For carbon removal, BOD surface area loading rates vary: >20 g/(m²·d) for high load, 5–15 g/(m²·d) for conventional load, and ≤5 g/(m²·d) for low load. Denitrification rates are typically 0.15–1.0 g/(m²·d) for pre-denitrification. System design requires horizontal flow velocity <20 m/h, HRT of 1.0–1.2 h (anoxic) and 3.5–4.5 h (aerobic), and DO at 2.0–6.0 mg/L. Adequate pretreatment with fine screens (≤3 mm) is essential. Aerobic tanks use perforated pipe aeration; anoxic tanks require mixers with 25–35 W/m³ power. MBBR offers high efficiency, shock load resistance, operational flexibility, and low-cost adaptability for municipal and industrial wastewater treatment.