=== The Existing Wastewater System ===
[[File:Talibon.gif|right|200px]]
{| cellspacing="1" cellpadding="1" border="0" style="width: 100%"|-| style="width: 1405px; vertical-align: top" | The system as it is currently installed includes a single chamber digestive tank followed by two open concrete lined pits.The facility layout is represented in the diagram. The left-most box represents the digestive tank, the middle box represents the first open pit, and the right-most box represents the second open pit. The main concern with the existing layout is that it appears to be too small to accommodate all of the flow and provide the required treatment. Biodigesters that are designed to accomplish anaerobic digestion of slaughterhouse wastewater are generally designed for detention times of between 7 and14 days. Therefore, it appears that the digestive tank is significantly undersized to accomplish complete anaerobic digestion at the design flow. The pits are also on the small size given the projected wastewater flows. They will operate as anaerobic pits, which also require a sufficient detention time to accomplish proper treatment.
| style="width: 216px" | [[File:TalibonThe facility layout is represented in the diagram.gif| The left-most box represents the digestive tank, the middle box represents the first open pit, and the right|200px]]|}-most box represents the second open pit. The main concern with the existing layout is that it appears to be too small to accommodate all of the flow and provide the required treatment. Biodigesters that are designed to accomplish anaerobic digestion of slaughterhouse wastewater are generally designed for detention times of between 7 and 14 days. Therefore, it appears that the digestive tank is significantly undersized to accomplish complete anaerobic digestion at the design flow. The pits are also on the small size given the projected wastewater flows. They will operate as anaerobic pits, which also require a sufficient detention time to accomplish proper treatment.
=== Wastewater Treatment Concerns ===
[[File:Talibon2.png|right|200px]]
{| cellspacing="1" cellpadding="1" border="0" style="width: 100%"|-| style="width: 1405px; vertical-align: top" | There are two major concerns that are driving the initiative to retrofit the wastewater system:
*The first concern is the inability of the wastewater system to meet discharge requirements for biochemical oxygen demands and total suspended solids. Based on the components installed and the anticipated strength and volume (loading) of the wastewater, it is likely biocehmical oxygen demands and total suspended solids will exceed discharge limitations.
*The second concern is odor and nuisances. Anaerobic wastewater systems that are open to the atmosphere often generate odors and mosquitoes.
An initial recommendation is to minimize waste. Since the wastewater treatment infrastructure is already installed, reducing the volume and strength of the wastewater to be treated to match the infrastructure is one option. The facility should also follow best practices. For example, collecting the blood and offal from the slaughtering operation will help reduce organic loading and waste volume, making the wastewater easier to treat. In addition, covering the influent channel will minimize rainwater entering the system, which will maximize wastewater detention time through the system.
|}
=== Infrastructure Retrofit ===