Effects of electromagnetic energy in irradiation of total suspended solids (TSS)‎ and total desolved solids (TDS)‎ and their effects on the turbidity in the municipal wastewater samples

Abstract EN

Gamma radiation (most powerful radiation in penetrating materials) is used in the removal of the phenol from the wastewater samples taken from the effluent of sedimentation tank of AL-Rustamia wastewater treatment plant.

Many doses of radiation are used, such as 25, 50, 100, 200, 300, 400 and 500 krad.

The final value is an average of the three samples for the same absorbing dose of radiation.

Most of the measurements are found in the acceptable range of Iraqi limits of these tests.

Total suspended solids (TSS) response to the treatment, where the concentrations decrease from 308, 422 and 450 mg/l to 40 mg/1 at 200 krad, 42 mg/1 and 48 mg/l at 300 krad respectively, where the accepted value of TSS in the treated wastewater is 60 mg/l.

Also total dissolved solids (TDS) respond to the radiation, where low doses of radiation decrease the value from 10580, 12435 and 12210 mg/l to 1208 mg/l at 10 krad, 1100 mg/l and 1121 mg/I at 25 krad respectively.

As it is known, the most reasons of turbidity presence are the TDS and TSS, since the results of turbidity are matched with those tests, where the concentration of turbidity reaches 68 NTU at 50 krad, 92 NTU at 100 krad and 42 NTU at 100 krad, while the initial values are 125,180 and 190 NTU.

Then the concentrations of turbidity increase at 500 krad to reach 120, 200 and 210 NTU.

This increase can be avoided by using activated carbon as an absorbing media to absorb the excessive concentrations of dissolved organic substances