Pengurangan COD dan BOD limbah cair terolah industri penyamakan kulit menggunakan taman tanaman air dengan tanaman melati air

A research was performed to treat the treated tannery wastewater using mexican swordplant (Echinodorus palaefolius) in constructed wetland. It was designed by uplow system with 3 m x 1 m x 1 m in dimension equal with 3 m3 in volume, whereas the media consist of 0.3 m thick first layer of rock in the bottom; 0.3 m thick gravel in second layer and 0.1 m third layer of Black sugar-palm fiber and at the top was sand layer with 0.3 m in thickness. The experiment was run by COD and BOD loading varied at 0.137; 0.137; 0.392; 0.409; 0.643; 0.648 kg/d for COD and 0.049; 0.051; 0.125; 0.133; 0.464; 0.467 kg/d for BOD. Effectivity of constructed wetland was determined by COD and BOD removal. Optimum effectivity of COD removal by 68.75% was found by operational condition of influent debit 0.576 m3/d ; detention time 2 days and 2 hours; COD loading 0.405 kg/d, whereas optimum effectivity of the BOD removal by 61.79 % was found by operational condition at influent debit1.440 m3/d ; detention time 1 days 13 hours and 30 minutes and COD loading 0.466 kg/d and reducing constant (k) = 0.008 d-1.