Pit Remedy BioSystems 

ALD BioSystems is a service subsidiary of Al Larson Distributing, Inc. (ALD), that focuses on manure management in large earthen storage and lagoon systems. The main technology utilized is a combination of our bacterial products and a small-scale aeration system. Pit Remedy alone has been shown to reduce odors by 50% to 70%. However, in order to achieve the odor control levels that are surfacing on State and Federal regulatory levels, larger facilities need to also add an aeration system with recommended maintenance doses of Pit Remedy to the lagoon system and buildings.

First bacteria is added to the system to facilitate what we call a "cleanup." During this period of time, solids that have accumulated in the system are liquefied and prepared for the aerated mixing process. The liquefication process is characterized by increased biological activity, bubbling and boiling, in the lagoon. On the bottom of the lagoon, 30 to 90 days after bacterial treatment, we generally see the solids change from a thick, unmovable material to a loose, pith-like consistency. In addition to the change in consistency, the levels of sludge decrease from 25% to 60% depending on the age of the lagoon and percentage of fixed solids vs. volatile solids.

After the lagoon has been treated with Pit Remedy and the solids have been liquefied, it is necessary to set up a small-scale aeration system. To provide air to the system, a mechanical blower is set up on the side of the lagoon. Hoses are then branched off from the outlet of the blower and attached to air diffuser that will be weighted down and placed at different locations on the bottom of the lagoon. It is important to keep in mind that we add only a small fraction of the air necessary to make the system function aerobically. It is instead designed to provide mixing to the effluent and increase the surface area of the accumulated solids. Producers who implement this technology will see tremendous reductions in BOD and Volatile Fatty Acids shortly after the introduction of the bacteria and aeration. Correspondingly, detectable emissions of volatile compounds such as hydrogen sulfide, mercaptans, organic acids and ammonia will be significantly reduced. The end result is a tremendous reduction in odor and solids.

Please pay special attention to the analytical graphs from the University of Purdue and Minnesota Pollution Control Agency (MPCA) study. The information provided demonstrates the effectiveness of this technology. In addition, the hydrogen sulfide monitoring data gathered by the MPCA shows profound reductions in hydrogen sulfide from the beginning of the study in April to the completion in September. These reductions were shown not only from the 20 million-gallon lagoon, but from the buildings as well.

ALD prides itself on providing cost-effective solutions for pork producers across the United States today. Please contact us if interested in utilizing our experiences and technologies in this 'New World' of State and Federal restrictions and regulations. We will be happy to assist you.

Back to Products