How to Treat Pig Farm Wastewater? A Detailed Explanation of Common Methods and Technical Points

SummaryUsually, the sedimentation method is used to treat pig farm wastewater, so pig farms need to be equipped with sedimentation tanks. When the wastewater is discharged into the sedimentation tank, it undergoes oxidative decomposition through a series of procedures. The sewage can also be self-purified, which can to a certain extent remove nitrogen and phosphorus from the water.

Pig farm wastewater is usually treated by the sedimentation method. Larger pig farms will have 2 to 3 sedimentation tanks on hand. When the wastewater is discharged into the sedimentation tanks, it settles and is filtered inside, and finally undergoes oxidative decomposition. This method is usually widely used, and the effect is also very good.

Pretreatment Methods for Pig Farm Breeding Wastewater

1. No matter which pig farm or what method is used to treat wastewater, there is always a set of pretreatment methods. This kind of method can usually reduce the load of wastewater pollutants after treatment, and can also prevent relatively large solids and debris from entering, reducing the damage and clogging of sewage discharge equipment.

2. If the sewage contains relatively large particulate pollutants, the pig farm can use the sedimentation method. Through preliminary sedimentation and then subsequent filtration, it is easy to discharge the sewage, and sedimentation is usually the most widely used method of sewage discharge.

3. Usually, relatively large-scale pig farms will set up 2 to 3 sedimentation tanks, and the wastewater will undergo filtration and sedimentation inside, then oxidative decomposition, and then further treatment. Some will also prepare mechanical filtration equipment, but this kind of cost tends to be higher.

4. Some also use natural methods to carry out self-purification treatment of sewage, for example, by preparing oxidation ponds. The principle inside is to use the organisms in the pond to purify the sewage. After the sewage stays in the pond for a long time, the microorganisms inside will degrade some pollutants, and to a certain extent can remove nitrogen and phosphorus from the water.