What are other cheap and efficient coagulants apart from Aluminium Sulphates?
We are investigating some of the worse unsafe water sources (muddy water from rivers, ponds and wells) being used by some communities in some parts of Nigeria and how they treat the water before use.
We discovered that some of them use Alum (Aluminum Sulphate) as the cheapest available solution to clarify the water and use bleach to disinfect.
Our laboratory analysis of most of the "treated water" showed the presence of Aluminium at higher values than Nigeria Industrial Standard (NIS) and WHO guidelines for drinking water.
Is there a cheaper chemical solution that coagulates and clarifies such water?
There are other cheaper technologies to perform effluent coagulation. Here are some alternative, low-cost and natural examples: bentonite, fulvic and humic acids, moringa oleifera, among others. The important thing is to perform a jar test, to verify in the laboratory what would be the best application dosage in the effluent, in order to have a concentration of the coagulant agent, efficient and low cost.
Normally it is the cheapest coagulant. Probably you are not working in the correct range of pH. Try to find it by jar test. May be you can also use a pre sedimentation before your treatment for periods of high turbidity.
Aluminium sulphate is one of the better coagulants for the application. The challenge in a community application is that pH is not maintained in the optimum range (6.5 to 7.5) and if it falls below the solubility pH range, aluminium carryover into the filtered water is experienced.
If maintaining pH in the optimum range is difficult, can use ferric chloride that works in a wider pH range, between 4 and 10.
On arrive à un stade ou l'on fait n'importe quoi sans au préalable regarder ce qui est de nature -biologique- ou ce qui sera de nature -biochimique-.
Toute action biochimique sur un liquide contenant des éléments chimiques dissous aura un impact sur la caractéristique -biologique- de l'eau qui se répercutera autoamtiquement sur la santé des individus à qui on aura présenter cette eau comme une consommable
Oui, on peut tout faire mais quelles en seron les conséquences ?
Hello
We get to a stadium or we do anything without first looking at what is - biological - or whatever - biochemical-.
All biochemical action on a liquid that contains dissolved chemicals will have an impact on the feature - organic - water which will impact rupted on the health of individuals who will be presenting this water as a consumable
Yes, we can all do, but what in seron consequences?
To my knowledge Alum is the cheapest Cooagulant readily available in the market. Other coagulant which would be more efficient in your above mentioned applications could be Ferric Chloride but it would be definitely costlier than Alum.