Filter Brewery Wastewater to Reduce Disposal Costs and Save Water

Brewery wastewater is not easily disposed of and can be a major operating expense. This dilute wastewater is mainly composed of water, grains, and fermentation by-products which can result in high surcharges when disposed of in the sewer system. For plants not connected to a sewer, the cost to haul wastewater to nearby processing locations can be steep.

Digested Organics specializes in organic waste management and provides customized solutions to help breweries take care of their wastewater. We offer a unique stainless steel ultrafiltration system, which can remove suspended solids, a fraction of the organic matter, and large fractions of the nitrogen and phosphorus. See the below data table for a brewery wastewater sample we recently put through the ultrafilter, along with the picture of the raw wastewater, filtrate, and concentrate.


For customers that want an even cleaner effluent, we use our Two-Step Reverse Osmosis System.  This is a combination of forward and reverse osmosis that produces very clean water that just has trace amounts of sodium–ideal for reuse onsite, direct or indirect discharge, or sewer disposal with little or no surcharges. Below is a representative data table as well as a picture showing the raw wastewater, the TSRO concentrate, and the clean water effluent.



Avoid Winter Manure Spreading with Advanced Filtration

During winter, manure is applied on accessible fields or parts of fields that are available depending on weather conditions. This is known as winter manure spreading. Winter manure spreading is a practice that is intensely scrutinized and regulated because of the high risk of polluting water sources and loss of nutrients. The risk of runoff to surface water increases when manure is applied to frozen or snow-covered ground, and this runoff can spread contaminants like phosphorus and nitrates.

Typically, the greatest risk of runoff and nutrient loss occurs within 72 hours of rain or snowmelt. With climate change causing more dramatic rain events, the risk of runoff and surface water contamination is only rising.

Luckily, you can potentially avoid winter manure spreading with customized filtration technology from Digested Organics. By removing liquid from your lagoon year-round, the chance of needing to spread manure in the winter due to a full lagoon is dramatically reduced.

Digested Organics deploys a stainless steel ultrafiltration system and Two-Step Reverse Osmosis system that can dramatically reduce the volume of liquid in your lagoon as well as help concentrate nutrients for more cost effective land application. When deployed together, we call this our Nutrient Concentration & Water Reclamation System. With these filtration solutions, you can:

  • Reduce manure hauling and spreading costs
  • Reduce the risk of manure hauling spills, road deterioration, and soil compaction
  • Prevent groundwater contamination and reduce odors
  • Manage nitrogen and phosphorus levels to allow farmers to expand operations
  • Customize a solution to meet your site’s specific needs

The systems built by Digested Organics can turn manure into clean, reusable water and concentrated fertilizer that is ready to be land applied when it makes the most sense for your crops and not when your lagoon is simply full .


Ultrafiltration Creates Milk Permeate used to Make Vodka

“Vodka distilled from an unwanted milk product is selling out within days of production,” according to Progressive Dairyman’s article entitled “Canadian Brewers Distill Vodka from Milk Permeate.” The article discusses the development of a new vodka product, called Vodkow, which is created using ultra-filtered milk, known as milk permeate.

Milk permeate is created by using an ultrafiltration system to remove the fat, cream, and proteins, leaving behind a liquid that is high in milk sugar or lactose. Yeast is then added to begin the quick fermentation process and ultimately create Vodkow.

In the article, Omid McDonald, founder of Dairy Distillery, describes Vodkow as a clear, sweet smelling liquid with the same heat as vodka but having an almost caramel aftertaste that makes is easy to sip.

The hope is that Vodkow is the start to a new development in the alcohol industry that could also create an additional revenue stream for the dairy industry.

Digested Organics offers a customized, stainless steel ultrafiltration system that distillers or dairy processing plants could use to create milk permeate. For more information on our solutions or to get a customized quotation, email today or call us at 844-934-4378.


Ultrafiltration Technology Helps Distilleries Manage Stillage

One of the biggest challenges in distilling is the disposal or treatment of stillage, the remaining mixture of grain and water after fermentation and distillation. With the growing production of spirits, distillers are faced with more and more stillage that can be costly to process and transport. While stillage contains grains that are useful as an animal feed, it is typically 94-97% water, so huge volumes have to be transported to deliver relatively few pounds of useful feed.

Digested Organics is a company that is committed to changing the way waste is managed. Our mission is to empower businesses to reclaim waste in a way that is more cost effective and eco-friendly. Our ultrafiltration technology solution for stillage can remove 65-90% of the liquid volume as “ultra-thin stillage”, which is ideal to reuse as backset with no fats/oil nor bacteria, and fewer organics. The remaining concentrate is typically 12-15% dry matter and rich in protein, making it more valuable as an animal feed and less costly to transport.  To learn more, visit: #filtration

Digested Organics Helps Local Robotics Team Learn about Anaerobic Digestion

Digested Organics CEO, Robert Levine, recently helped the Hurricane Bots of Hutchings Elementary School in Howell, Michigan gain an advantage on their competition. The Hurricane Bots are trying to find a way to make a 3D printer filament out of digestate on a space station. Levine explained that anaerobic digestion may be helpful in the creation of the filament, and he went on to teach the students about anaerobic digestion more generally as part of this after school program . The team at Digested Organics is looking forward to seeing what the Hurricane Bots come up with and providing further support in the future. Go Hurricane Bots!

Digested Organics Prevents Manure Lagoon Overflows

This fall, Hurricane Florence’s rains flooded a large area of North Carolina that included many hog farms, causing overflows of the manure lagoons. These overflows raised serious concerns around pollution and questions about the best way to deal with hog manure.

Situations like this could be prevented in the future with the use of Digested Organics’ waste management solutions. Our customized stainless steel ultrafiltration systems can turn manure into a filtrate with little to no suspended solids, bacteria, and phosphorus, while simultaneously creating a high value concentrated fertilizer for more targeted land application. For sites that want to remove water from lagoons and directly discharge it to nearby waterways, we use our Two-Step Reverse Osmosis System to polish the UF permeate, creating crystal clear water for discharge (or reuse) and a second concentrated fertilizer. Used together, we call our integrated filtration package the Nutrient Concentration & Water Reclamation System.

Digested Organics’ products are customized to the farmer’s needs and have proven to be better for the bottom line and better for the environment. Give us a call at 844-934-4378 to learn how we can help you improve lagoon and manure management today.

Filtering Thin Stillage Beats Evaporation


Are you evaporating thin stillage? We can filter it instead at a fraction of the cost! Our stainless steel ultrafilter recovered ~75% of this thin stillage as a clarified filtrate with no suspended solids and significantly reduced nutrient content.

Key benefits:

  • UF permeate is ideal to reuse as backset since it contains no oils, no bacteria, and fewer volatile acids
  • Increases the amount of thin stillage usable as backset
  • UF concentrate is a higher solids slurry for incorporation into DDGS and reduces energy required for evaporation
  • May increase efficiency of corn oil recovery by reducing oil recycled in raw thin stillage to fermenters

Download the Ultrafiltration for Thin Stillage Technical Brief to learn more!

UF Cleans Up Biodiesel Wastewater

We recently demonstrated how our stainless steel ultrafilter could process oil-washing wastewater rich in FOG from a biodiesel plant. The UF removes all suspended solids, FOG, and makes a filtrate that the plant can reuse to wash the next batch of raw oil. Our UF can also be an effective solution before onsite wastewater treatment or sewer discharge since it removes a large fraction of the BOD/COD. The UF concentrate is a high solids slurry (15-20% TS) that can be sold as an animal feed ingredient.

Download the Ultrafiltration for Biodiesel Wastewater Technical Brief to learn more.

Digested Organics Moves into New Headquarters!

We are pleased to announce we have moved into a new facility to expand our manufacturing and pilot testing capabilities, analytical lab, and office space. Our new address is:

Digested Organics
23745 Research Dr.
Farmington Hills, MI 48335

Please stop by and see us!

Digested Organics Awarded Grant for Manure Ultrafiltration in Vermont Phosphorus Innovation Challenge

Digested Organics was recently awarded a $45,000 grant to study manure and digestate ultrafiltration in Vermont as part of the Vermont Phosphorus Innovation Challenge (VPIC). We will be deploying a mobile pilot-scale ultrafiltration system to show how we can concentrate the phosphorus in dairy manure (or digested manure) into about 20% of the initial volume, thereby making it possible to transport to nearby composting operations for creation of value-added soil amendments that can be exported from the watershed. For more information, please see this presentation and check back here soon for more updates.

A video of the recent press conference is available via Facebook or can be viewed here:

Vermont Phosphorus Innovation Challenge winners announced. #VT #ThinkVT

Posted by Vermont Agency of Agriculture on Friday, October 5, 2018