Alum as we know as a best cogulant especially in water treatment processes.. but can you imagine the cost of alum in the market? Alum cost quite high every year in market demand. So, drastically research and study need to conduct to replaced alum.
Last 2 years, during my practical training at "Local Water Industry Company" they proposed the project to Research and Development to do the study. The study include:
- To do research and study of Alum sludge for recovery.
- To do further potential recovery alum can reduced the cost of land for solid waste management.
The research works begun from bench scale which laboratory works evolved. The laboratory works focused on the chemical and physical properties of Alum sludge itself. The laboratory test such as pH , color, TSS, SS, 30 minutes settlement, etc had been conducted. Unfortunately the research only popular on the bench scale only. Its because:-
a) We found that Alum sludge has potential for recovery but costly especially for separation between alum and sludge.
b) Alum recovery we tested very poor as function of cougulant. So we need additives such as polymer to geneat flocc.
For me, its a good afforrd of their company try to something new. More Research and study need to conduct for
alternatives and also for company benefit even its study and reserach was failed.
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