( ( The ( SODIS method ) ) ( ( uses ( ( ( a combination ) ( of UV ) ) ( ( light and ) ( ( ( increased temperature ) ( -LRB- ( ( solar thermal ) -RRB- ) ) ) ( for ( ( disinfecting water ) ( using ( only ( sunlight ( and ( plastic ( PET bottles ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP SODIS) (NN method)) (VP (VBZ uses) (NP (NP (DT a) (NN combination)) (PP (IN of) (NP (NNP UV))) (UCP (ADJP (JJ light)) (CC and) (NP (NP (NP (VBN increased) (NN temperature)) (PRN (-LRB- -LRB-) (NP (JJ solar) (NN thermal)) (-RRB- -RRB-))) (PP (IN for) (NP (NP (VBG disinfecting) (NN water)) (VP (VBG using) (NP (JJ only) (NN sunlight) (CC and) (JJ plastic) (NNP PET) (NNS bottles))))))))) (. .)))
The SODIS method uses a combination of UV light and increased temperature (solar thermal) for disinfecting water using only sunlight and plastic PET bottles.
(ROOT (S (SBAR (WHADVP (WRB When)) (S (NP (NP (DT the) (NN temperature)) (PP (IN of) (NP (NN water)))) (VP (VBZ is) (VP (VBN increased) (PP (IN after) (S (VP (VBG being) (VP (VBN used) (PP (IN in) (S (VP (VBG cooling)))))))))))) (, ,) (NP (PRP it)) (VP (VBZ is) (NP (JJ thermal) (NN pollution))) (. .)))
When the temperature of water is increased after being used in cooling, it is thermal pollution.