Water purification and access to drinking water is still considered one of the most important issues in the water industry, and among the many solutions that have been industrialized in this field so far, photocatalytic purification is considered a new and rapidly improving technology. In this study, for the first time, using cement composite activated with industrial photocatalyst and without the use of nanomaterials, the simultaneous treatment of two pollutants, nitrate and methylene blue (MB), plus the fixed-bed reactor efficiency in terms of energy consumption and bed activity level were compared with other researches. For this purpose, the effect of concentrations of 4, 8, and 12 mg/L of MB on denitrification and MBdegradation rate was investigated simultaneously. In this reactor, the flow rate of water passing through the reactor was selected 4 and 12 L/min. Besides, the power of acid treatment on improving the efficiency of the composite surface was investigated in two states, intact and acid treated. The obtained results showed that the efficiency of the photocatalytic surface has increased and the energy consumption required to degrade the unit amount of pollutant in water has decreased drastically. Furthermore, the microstructure of the bed surface was presented for advanced analysis. The results revealed that increasing the concentration of MB, within the applied range, did not have a significant effect on reducing denitrification rate, and on the other hand, acid treatment in all specimens led to an improvement in reactor efficiency.