When dewatering sludge, the use of polymer is necessary. Depending on the composition of the sludge, flocculants and/or coagulants may be needed to facilitate the process of solid particles separating and settling out from the water. There are a variety of sludge dewatering polymers that can be formulated to effectively separate the water from your sludge. The benefits associated with using polymers are quite simple; it acts as a thickening agent, producing larger chunks of soiled materials. And in so doing, it releases clear, sludge-free water.
Here are eight polymer dosage tips you should be aware of:
- One gallon of polymer will treat anywhere from 6,000 to 7,500 gallons of sludge.
- You’ll need four gallons of polymer to treat 30,000 gallons of sludge (enough to fill a Sludge Mate).
- According to a study performed by the Minneapolis Wastewater Treatment Plant, polymer doses increase and cake dryness decreases when the ratio of primary to secondary bio-solids goes from 50:50 to 30:70.
- Longer anaerobic bacteria digestion times can result in decreased polymer doses.
- Sludge with smaller particles tend to require more polymer.
- Sulfides, phenolics, and chlorides can cause you to require more polymer.
- The higher the percentage of cake solids, the higher the dose of polymer needed.
- If you use too much or too little polymer, you may end up with a wet cake solid.
Have more questions about polymer and its role in dewatering? We can answer your questions! Contact us today.