Classification of sludge conditioner

      Conditioner, also known as dehydrating agent, can be divided into inorganic conditioner and organic conditioner. Inorganic conditioner is generally suitable for vacuum filtration and plate frame filtration of sludge, while organic conditioner is suitable for centrifugal dewatering and belt pressure filtration dewatering of sludge.

(1) Inorganic conditioner.

The most commonly used inorganic conditioners are iron salt and aluminum salt.

(2) Organic conditioner.

There are many kinds of organic synthetic polymer conditioners. According to the degree of polymerization, they can be divided into two types: low degree of polymerization (molecular weight is about 1000-tens of thousands) and high degree of polymerization (molecular weight is about several hundred thousand to several million); according to the ionic type, it can be divided into cationic type, anionic type, non-ionic type, anionic type, etc. Compared with inorganic conditioner, organic conditioner dosage is less, generally 0.1% – 0.5% of sludge dry solid weight, and has no corrosivity.

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      The organic conditioner used for sludge conditioning is mainly high polymerization degree of polyacrylamide flocculant products, mainly cationic polyacrylamide, anionic polyacrylamide and non-ionic polyacrylamide.

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