How to reduce the water content of fermented manure?

The study showed that the urine output of a 30kg pig in one day is 1180ml, and the water content of the feces is 71.96%. Generally speaking, the moisture content of fresh poultry manure is about 70%, which cannot be directly composted and fermented. Before using the trench compost turner , the moisture content of the material should be between 50% and 60%, but when the moisture content of the material is 70% or 80%, how to reduce the moisture content? There are two ways to reduce the moisture in your poultry manure compost.

 

  •  You can add auxiliary materials and match with agricultural waste straws, sawdust, etc. On the one hand, it can reduce the moisture content, on the other hand, it can increase the organic matter content.
  • When the moisture content of the material exceeds 90%, you can separate with a solid-liquid separator, and the separated material can be directly fermented. The separator can only separate pig manure, cow manure, etc., but do not recommend you dewater the chicken manure. Because of the high water content of chicken manure, the output of chicken manure of 3t is less than 1t of chicken manure after passing through the dehydrator. The output will be greatly reduced.
Manure solid-liquid separator equipment
Manure solid-liquid separator equipment


Why do we need to reduce the water and not ferment directly?

Aerobic fermentation needs to meet certain conditions in order to carry out fermentation. And moisture is one of the factors that affect aerobic. First, if

If the moisture conditions are not up to standard, it will cause the dead bed to stink and rot. Second, the carbon-nitrogen ratio in manure is unbalanced. Adding excipients can adjust the carbon-nitrogen ratio in feces.

Can the raw materials be directly dried in a dryer without fermentation?

The water content of the raw material is relatively large, and it is easy to stick to the wall when entering the dryer; and the cost is high, and the heat source needs cost; in addition, the temperature of the dryer is relatively high, which is easy to kill the active nutrients in the raw material.

Groove Type Compost Turner for Composting Poultry Manure in SX Organic Fertilizer Production Equipment Plant
Groove Type Compost Turner for Composting Poultry Manure in SX Organic Fertilizer Production Equipment Plant


Taking chicken manure as an example, the moisture content of chicken manure fermentation has strict requirements, and it is best to control it at about 55%. Obviously, the moisture content of chicken manure is mostly more than 70%. You should adjust the moisture content to about 60% to meet the moisture requirements of fermentation. Click here to know about chicken manure management.

Then it is to adjust the carbon-nitrogen ratio in the raw material and increase the organic matter content. The original carbon-nitrogen ratio of chicken manure is far from enough, because the carbon-nitrogen ratio of chicken manure is only about 9-10%, and the optimal carbon-nitrogen ratio for aerobic fermentation is 25%-30%. According to the NY525-2012 organic fertilizer standard, NPK (NPK refers to nitrogen, phosphorus, potassium), the total content must be greater than or equal to 5%, but the original nitrogen, phosphorus and potassium content in chicken manure cannot reach this target, we need to supplement it by adding auxiliary materials to make the organic matter content Greater than or equal to 45%, in line with the national standards.

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