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Table 1 Properties of the natural wastewater used in the experiments

From: Improved biodegradability of hardly-decomposable wastewaters from petrochemical industry through photo-Fenton method and determination of optimum operational conditions by response surface methodology

Parameter Industrial wastewater Sanitary wastewater Mix wastewater for experimental
Karoon petrochemical Maroon petrochemical Karoon petrochemical
COD (mg L−1) 3980 742 81 2498
BOD5 (mg L−1) 345 70 64 226
TDS (mg L−1) 7050 24,350 1402 11,186
pH 5 6.5 7 5.7
BOD5/COD 0.09 0.09 0.8 0.09
Mix ratio 2 1 0.5