Different Chemicals for Water Treatment

Water treatment chemicals include: 
1) Trichloroisocyanuric acid (TCCA)
2) Sodium dichloroisocyanurate (DCCNa, SDIC)
3) Calcium hypochlorite
4) BCDMH (bromine)
5) Potassium persulphate
6) Chlorine dioxide
7) Sodium hypochlorite
8) Sodium bisulphate
9) Sodium carbonate
10) Sodium bicarbonate
11) Calcium chloride
12) Cyanuric acid 
13) Aluminum sulfate
14) Polyaluminum chloride (PAC)
15) Copper sulphate
16) Benzalkonium chloride  
17) Sodium thiosulfate, penta
18) Bronopol (2-Bromo-2-Nitropropane -1.3-Diol)
19) 1, 2, 3-benzotriazole
20) Tolyltriazole 
21) 2-hydroxy phosphonoacetic acid (HPA)
22) Aminotrimethylene phosphonic acid (ATMP) 
23) Diethylenetriamine pentanmethylene phosphonic acid (DETPMP)
24) 1-hydroxyethylidene-1.1-diphosphonic acid (HEDP)
25) 2-phosphonolutane-1, 2, 4-tricarboxylic acid (PBTC)
26) Potassium permanganate 
27) Sodium bromide 
28) Sodium fluoride 
29) Sodium hexametaphosphate 
30) Sodium flourosilicate
31) Ferric chloride
32) Ferrous sulfate
33) Citric acid
34) Zinc oxide
35) Phosphorous acid
36) Ammonium bifluoride
37) Active carbon
38) Hydrofluoric acid