Nitrogen and phosphorus treatment of marine wastewater by a laboratory-scale sequencing batch reactor with eco-friendly marine high-efficiency sediment

Abstract

DO: dissolved oxygen; Eco-HEMS: eco-friendly high efficiency marine sludge; F/M: food and microorganism ratio; HRT: hydraulic retention time; ML(V)SS: mixed liquor (volatile) suspended solids; NCBI: National Center for Biotechnology Information; ND: not determined; qPCR: quantitative real-time polymerase chain reaction; RE: removal efficiency; SBR: sequencing batch reactor; SD: standard deviation; SDNR: specific denitrification rate; SNR: specific nitrification rate; SPUR: specific phosphate uptake rate; SRT: solids retention time; T-N: total nitrogen; T-P: total phosphorus; (V)SS: (volatile) suspended solids; w.w.: wet weight.

Determining Indigenous Microalgae Species in Malakand Water Bodies for Potential Use as a Biofuel Production Source

“…On the other hand, phosphorus played a vital role in the distribution and growth of microalgae in these habitats. Phosphorus is one of the two main growth factors that could promote microalgal growth [82][83][84][85]. In the current work the microalgal species like Chlorella, Scenedesmus, and Pandorina were found to be more tolerant to high phosphorus and were present in the water bodies containing high phosphorus, whereas some strains like Chlamydomonas and Gonium were observed to be less tolerant as they were absent in high phosphorus-containing water bodies.…”

Pilot plant study on nitrogen and phosphorus removal in marine wastewater by marine sediment with sequencing batch reactor

“…The sieved marine sediment was applied to a sequencing batch reactor (SBR) system in pilot plant-scale with SBR cycles (more description in the next section). Bacterial strains used in this study were described in our previous study [17], whereas Bacillus sp. KGN1 (KEMB 3401-006) and Vibrio sp.…”

“…The pilot plant-scale SBR biological system was designed as 10 m 3 d -1 of daily wastewater flow (Q) with 4.5 m 3 of SBR reactor in a total volume (V T ), 2.5 m 3 of filling volume (V F ), and 6 h cycle -1 of time per cycle (T C ) from previously obtained parameters in lab-scale data [17,18], and setup in Tongyeong-si, Gyeongsangnam-do, South Korea (34˚49'31.82"N 128˚20'10.17"E, S1(b) and S1(c) Fig) . Tongyeong is located in the southern-coastal area of South Korea in which red tide frequently occurred according to the statistical data [26]. The optimal conditions obtained from the lab-scale reactor were applied to the pilot plant-scale SBR system at the setup.…”

“…KGN1 (KEMB 3401-006) efficiently removed nitrogen (N) with 86.0% removal efficiency (RE) for 10 h at initial 10 mg L -1 NH 3 -N and Vibrio sp. KGP1 (KEMB 3001-129) efficiently removed phosphorus (P) with 99.9% RE for 10 h at initial 10 mg/L PO 4 3-P [17]. Moreover, aerobic granular sludge (AGS) instead of common activated sludge bacteria was used for improving settlement in the biological treatment of marine wastewater [10,11,[17][18][19].…”

“…KGP1 (KEMB 3001-129) efficiently removed phosphorus (P) with 99.9% RE for 10 h at initial 10 mg/L PO 4 3-P [17]. Moreover, aerobic granular sludge (AGS) instead of common activated sludge bacteria was used for improving settlement in the biological treatment of marine wastewater [10,11,[17][18][19]. Thus, we also previously applied AGS to lab-scale SBR reactor, and found that AGS increased settlement of activated sludge for better efficiency in the biological treatment [18].…”