Alum and Ferric Chloride: Pros, Cons, and Substitutes
2017年10月18日 · Alum and ferric chloride are two widely-used “commodity chemical” coagulants that have been around for a long time. Why are alum and ferric chloride so commonly used? …
Both alum and ferric chloride can be used to generate inorganic polymeric coagulants. These coagulants are typically generated by partially neutralizing concentrated solutions of alum or …
• Chemicals (ex: alum; ferric chloride) are added in solution to (1) increase size of particles, (2) capture them in hydroxide flocs and then precipitate them.
1.4: Coagulation and Flocculation - Workforce LibreTexts
2021年3月20日 · The three most common coagulants used in water treatment are Aluminum Sulfate (Alum), Ferric Sulfate, and Ferric Chloride. The most commonly used primary …
cationic (positively charged) polymers may be used alone, or in combination with alumor ferric coagulants to attract suspended solids and neutralize their surface charge. Manufacturers can …
Laboratory evaluation of alum, ferric and ferrous-water treatment ...
2020年8月1日 · The primary water/wastewater coagulants used are aluminum sulfate (alum), ferric chloride and ferrous chloride (Brennan et al., 2011; Matilainen et al., 2010). During …
water treatment - coagulation-flocculation typical reagents
Ferric salts are the most frequently used iron salts. The overall reaction is the same as that for aluminium salts: and, for instance, with ferric chloride in water with calcium alkalinity:
Wastewater Treatment Using Alum, the Combinations of Alum-Ferric …
2018年12月17日 · To reduce the large intake of aluminium salt in the treatment of palm oil mill effluent (POME), this research examined the comparative suitability of alum and combinations …
Water Treatment | Coagulation Chemistry Basics
2018年1月16日 · Aluminum Sulfate – The most common and is often used with cationic polymer. Aluminum Chlorohydrate – Produces less sludge and is less corrosive than aluminum sulfate. …
2.1. Water treatment residual sources, collection, and characterization methods Three different WTRs were used in the study. Al-WTR was collected from drying beds of a 35 million …
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