Our industrial screening and treatment technologies can help breweries to improve their wastewater treatment processes, reduce their water use and cut effluent discharge fees.
Water is a critical issue for breweries of every size. Not only in terms of product - it takes eight pints of water to make one pint of beer - but also for cleaning and related processes. Forward-thinking breweries will not only consider water to be a resource and a source of cost, but also an opportunity to improve their bottom line.
Our beverage processing water management solutions can help you improve profitability by reducing your wastewater treatment costs, protecting and improving the performance of expensive downstream processes, increasing by-product capture, and helping you to recycle and reuse your water faster and more efficiently.
Finding the most efficient and effective solution to operational problems is critical to any brewery’s success. The Hydro MicroScreen™ ultrafine rotating belt screen significantly reduces the load that breweries need to send on to wastewater treatment processes, and by improving effluent quality it can reduce or even eliminate effluent discharge fees.
On-site wastewater treatment systems are designed to efficiently treat liquids, but they are not so good at dealing with solids, which reduce effectiveness and increase energy requirements. By capturing, compacting and dewatering by-product solids, the Hydro MicroScreen™ improves the capacity and efficiency of digesters and other treatment systems while providing output with high dry solids content that can be handled, disposed of or sold on to secondary markets (as fertilizer, for example) very cost effectively.
Biological Oxygen Demand (BOD) and Total Suspended Solids (TSS) are both very significant issues that breweries face in their wastewater. While typical domestic wastewater has a BOD and TSS of about 150 mg/L, brewery wastewater can have a BOD of 10,000 mg/L and a TSS of 5,000 mg/L.
High BOD and TSS levels in brewery effluent can lead to significant discharge fees. In some locations, this may be a reasonable cost of doing business, but in other places this water cost can make or break an operational budget. Further, sending large volumes of high BOD and TSS wastewater to a sewer system has the potential to completely overwhelm municipal treatment plants, making disposal a potentially very serious issue.
The Hydro MicroScreen™ captures particles 20% of the size that conventional screening can remove, reducing wastewater TSS levels and cutting effluent discharge fees.
The main sources of TSS in a brewery are things like spent hops and grains and bits of yeast that are washed into wastewater during operations, equipment cleaning and clean in place (CIP) activities. Conventional wedgewire screens have been used for years to reduce TSS, but despite being called "fine screens" this technology is not effective at capturing the smaller particles that cause the most problems.
While conventional screening systems typically remove solids with particle sizes of 500 micron and larger, the Hydro MicroScreen™ removes solids as fine as 100 micron - effectively capturing particles 20% of the size that conventional screening can remove. This provides a significant reduction in a brewery’s wastewater TSS - which translates into a reduction in effluent discharge fees.
The most common way to reduce soluble BOD is aeration. However, aeration systems are expensive to operate, with the electrical costs of blowers or compressors rapidly eating away at profitability - and if an aeration system is clogged with solids then breweries are paying more simply to get the same performance.
Reducing TSS before it enters aeration systems maintains processing capacity and prevents these increasing energy costs from hitting the bottom line. The Hydro MicroScreen™ can capture and remove those solids upstream to preserve your capacity and keep your energy costs down.
A New England brewery with an expensive anaerobic digestion system was looking to reduce TSS in their wastewater. The Hydro MicroScreen™ was piloted at the facility, and lab analysis of the pilot showed an average removal rate of 82% TSS. While COD was not the primary target of the system, the system also provided the additional benefit of removing 36% of COD.
Read the case study: Hydro MicroScreen™ helps New England brewery to cut disposal fees
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