Background
Beer is a low-alcohol, carbonated beverage brewed from malt, water, hops (including hop products), and yeast fermentation. This also includes non-alcoholic (dealcoholized) beer. Based on industry development and consumer demand, beer is generally classified into three categories:
1. Lager – pasteurized or sterilized.
2. Draft beer – stabilized using physical methods without pasteurization or sterilization, achieving biological stability.
3. Fresh beer – neither pasteurized nor sterilized, but contains a certain amount of live yeast to ensure biological stability.
Key Filtration Points in Beer Production
One of the most important stages in brewing is clarification filtration. During wort preparation, diatomaceous earth (DE) paperboard filters are widely applied to remove suspended solids and ensure process stability.
Great Wall in Brewing Filtration
For more than 30 years, Great Wall has been a trusted partner to the global brewing industry. By working closely with technology leaders, we continuously develop best-in-class filtration solutions. With the growth of the craft beer industry and the need for small-scale filtration, we provide flexible, efficient options that address individual challenges. Our depth filters help brewers achieve:
1. Environmentally friendly processes
2. High-quality filtrate
3. Reliable technical support with local presence
4. Reuse saves production costs
5. Removes impurities while preserving the flavor of beer.
The Challenge
The choice of clarification method depends on multiple factors, including:
1. Type of beer being brewed
2. Desired clarity level
3. Available equipment and resources
Depth filtration offers versatile solutions for breweries. After conditioning, beer is filtered to meet different final product requirements:
1. Coarse filtration – maintains a stable natural haze while removing residual yeast, proteins, and polyphenols.
2. Fine and sterile filtration – ensures microbiological stability by eliminating yeasts and bacteria that can shorten shelf life.
Optimized Filtration Solutions
SCP Support Sheets
Great Wall’s SCP support sheet is specifically designed for precoat filtration systems. It provides:
1. Excellent filter cake release
2. Lowest drip-loss
3. Longest service life
4. Reliable retention of unwanted particles (e.g., diatomaceous earth, PVPP, or other stabilization agents)
5. Consistent delivery of high-quality beer
Precoat Filtration
Precoat filtration is the classic method in beer production and has been used for decades. This process employs natural filter aids such as diatomaceous earth, perlite, or cellulose.
How it works:
1. Filter aids are deposited onto a coarse sifter, forming a fine filter cake.
2. Beer passes through the cake, which traps suspended solids such as yeast residues.
Benefits:
1. Gentle process that preserves beer’s ingredients, flavor, and color
2. Proven reliability with minor innovations (e.g., reduced water consumption, longer media service life)
To achieve the required final quality, precoat filtration is often followed by microbial-reducing depth filtration, using filter sheets, stacked disc cartridges, or filter cartridges.
Conclusion
Great Wall provides breweries with a complete range of depth filtration solutions to ensure stable, high-quality beer production. From precoat filtration with SCP support sheets to depth and trap filtration technologies, we help brewers achieve clarity, stability, and flavor preservation—meeting modern industry demands with proven, reliable systems.
