Sludge conditioner is a chemical agent that can change the surface structure of sludge, reduce the solid surface load of sludge, reduce the specific surface area of sludge and destroy the structure of bacteria.
The agents that can be used for deep dewatering of paper mill sludge mainly include but are not limited to the following:
Common sludge conditioners include the following:
1. flocculants: common flocculants include polyaluminum chloride (PAC), polyacrylamide (PAM) and so on. They are used to encourage the particles in the sludge to aggregate into larger clumps to facilitate subsequent settling and separation.
2. dispersant: used to disperse the particles in the sludge, so that it is evenly dispersed, to avoid the formation of clumps. Dispersant is helpful to improve sludge fluidity and mixability. Chemicals such as polyphosphates can be used as dispersants.
3. pH regulator: used to adjust the pH value of the sludge, so that it is in the appropriate range. Acid regulators (such as sulfuric acid, hydrochloric acid) and alkaline regulators (such as sodium hydroxide, calcium hydroxide) can be used to regulate the pH of the sludge.
4. oxidizing agent: used to oxidize organic matter in sludge, promote its degradation and stabilization. Commonly used oxidants include hydrogen peroxide, potassium permanganate, etc.
5. sedimentation agent: used to speed up the sedimentation rate of particles in the sludge, improve the sedimentation efficiency. Chemicals such as ferric sulfate and ferric chloride are commonly used as settling agents.
6. sludge dewatering agent (sludge conditioner) : it has the advantages of small dosage of agents, low cost, breaking the bottleneck of sludge dehydration, achieving efficient concentration and dehydration, good treatment effect and high cost performance. Sludge dewatering agent (sludge conditioner) is widely used in life, printing and dyeing, paper making, electroplating, chemical industry, leather and other industries of sludge dewatering treatment. Combined with the plate and frame mud press, the sludge moisture content can be reduced from more than 90% to 40%-60%, and the sludge reduction can be fully realized.
It is necessary to select the appropriate sludge conditioner according to the specific sludge characteristics, treatment objectives and process requirements, and dosing according to the product description and recommended dosage. At the same time, relevant environmental regulations and standards should be complied with to ensure the safe use and treatment effect of sludge conditioners. It is best to use sludge treatment and conditioner under the guidance of professionals.