Decolourisation of secondary effluent by UV-mediated processes

Efficiency of sequential ozone and UV-based treatments for the treatment of secondary effluent

“…These experiments were repeated using UVH in place of VUV (Runs 8-11). The times and dose of hydrogen peroxide were chosen based on previous work on secondary effluent from the same WWTP [9]. In that investigation it was demonstrated that for UVH (32 mg/L H 2 O 2 ) and VUV treatments decreases in DOC of Fig.…”

“…These technologies have been shown to be effective for the removal of organic matter and pollutants from water being processed for drinking water [2,[4][5][6]. More recent studies have demonstrated the effectiveness of UV/H 2 O 2 (UVH) for the removal of dissolved organic matter and micropollutants from secondary effluent [7][8][9][10][11][12][13][14]. The effluent organic matter (EfOM) is a complex mixture of natural organic matter from drinking water, soluble microbial products from the wastewater treatment process and refractory organic chemicals [15].…”

Assessment of biological activated carbon treatment to control membrane fouling in reverse osmosis of secondary effluent for reuse in irrigation

“…Although BTSE has already undergone biological treatment, it still contains some biodegradable matter as shown by various authors [4][5][6] and this can lead to biofouling of membranes during water reclamation processes [7]. There is also potential for the MF permeate to still contain biodegradable material which can lead to biofouling of the RO membrane.…”

Performance of Hybrid Photocatalytic-Ceramic Membrane System for the Treatment of Secondary Effluent

“…However, secondary effluent from wastewater treatment plants (WWTPs) contains colloidal particles, pathogenic microorganisms and organic pollutants, as well as natural organic matter (NOM) that is not degraded in the biological treatment process. The presence of NOM can result in colour and odour, and can contain precursors for disinfection by-product formation increasing human health risks [ 1 ].…”