Apply Design of Experiment (DOE) Method to Build Green Media to Decompose Organic Contents

摘要

1. Table 1 shows the compressive strength, density, water absorption and specific external surface area under the optimal ratio of rebuilt WAS pellets and other references. The raw pellets can be made of WAS, laterite and chemical additive with an optimal formula of 50% of WAS according to DOE. The basic characteristics of rebuilt raw pellets with the water absorption of 33.6 %, specific external surface area of 2.6cm~2/g, bulk density: 3.5 g/cm~3 and the compressive strength: 35.3 kgf/cm~2 (Figures 2 and3). 2. Two systems (SBR and SBBR) were cultured to steady state under three different loadings. The SBBR system was almost completely removed the ammounium (effluent NH_4~+-N: below 1 mg/L) (Figure 4).