1) Disinfect with chlorine 2) Process 3) To add chlorine to 4) Treat 5) Treat pool water 
Short blocks are often considered to be very serious punishments even though their direct impact is very small. They serve as little more than clips round the ear to drive home the point that you`ve done something wrong. One reason for this disproportionate opinion of them is that they are a permanent black mark on your block log. Therefore, a ve....
• (v. t.) To treat, or cause to combine, with chlorine.
Chlo'rin·ate transitive verb [ imperfect & past participle Chlorinated ; present participle & verbal noun Chlorinating .] (Chemistry) To treat, or cause to combine, with chlorine. 
[v] - treat or combine with chlorine 2. [v] - disinfect with chlorine
verb disinfect with chlorine; `chlorinate a pool`
· to combine or treat with chlorine. · to introduce chlorine atoms into an organic compound by an addition or substitution reaction.