Silica Sol Membrane Concentration Project Case
Project Overview
The client is a domestic inorganic new‑material enterprise producing silica sol. The original evaporation process suffers high energy consumption and colloid loss under high temperature. Small‑molecule inorganic salt impurities in feed liquid degrade final product quality.
Client requirements: adopt room‑temperature process to concentrate silica sol and remove small‑molecule impurities, improve material recovery rate and reduce energy & labor cost.
Project target: concentrate silica sol feed at ambient temperature, remove inorganic salt impurities, guarantee colloidal stability and improve economic benefit.
Feed Parameters
‑ Material: Silica sol feed liquid
‑ Capacity: 50 tons per day
‑ Inlet silica sol concentration: 8‑10%
‑ Main impurity: small‑molecule inorganic salt
‑ Process requirement: ambient‑temperature operation to protect colloid performance
Solution
Custom BluewavBio dedicated silica sol membrane concentration system, including feed pre‑treatment unit, main membrane unit, PLC automatic control system, CIP on‑line cleaning unit, material tanks and complete pipelines & instruments.
Process flow:
Feed tank → Pre‑treatment filtration → Membrane concentration host → Concentrated silica sol discharge. Water and small‑molecule salt form permeate for reuse. CIP on‑line cleaning regenerates membrane elements and extends service life.
Operation Performance
| Item | Inlet Feed | Concentrated Outlet |
|---|---|---|
| Silica sol concentration | 8‑10% | 25‑30% |
| Material recovery rate | ‑ | ≥98% |
| Small‑molecule inorganic salt | Present | Effectively removed |
| Operating temperature | Ambient | No thermal damage to colloid |
Highlight: Full ambient‑temperature membrane separation avoids damage to silica sol colloidal structure.
Client Benefits
High material recovery ≥98%, reduce material loss and increase output.
Great energy saving, replace thermal evaporation to cut operating expense.
Integrate concentration and impurity removal, improve product quality & stability.
PLC automatic control, lower labor intensity and shorten production cycle.
Convenient maintenance with on‑line CIP cleaning.
Project Site
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