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Vdater Treatment Plant Prcdudion Study <br />TABLE 12: <br />S'1'EP Ih`IEP 2 COACIMNT OOSFS <br />CUAGUV~M WSfi <br />FlRST <br />QUARIPR <br />SECOND <br />QUMITR <br />IHIRD <br />QUARIER <br />FOUftlH <br />QUMIFR <br />AU;M <br />l0 <br />.•fy„]Q...:::f.: <br />EO <br />10 <br />SABIl:f.flANT <br />NYPFRIOVtl90 <br />IO <br />°,~]OG>.. <br />511 <br />.'Y/.1...• % <br />HYP0110N95@A <br />]0 <br />!~il ODa!g. <br /> <br />W <br />.rD]._.:: <br />,acu <br />no <br />w <br />;.,ns:::... <br />a <br />Q6R01(EEPLWI' <br />HYPERIOV1090 <br />)5 <br />15 <br />10 <br />M <br />NYPFRION'ISIQA <br />35 <br />b <br />35 <br />3 <br />• ~.a':.,,:.~~.~~.a,a,.~.a.~,~.~,~.~m~ . <br />Color removal by preozonafion alone was significanUy lower at the Sabine <br />plant (6.3% to 12.7%). <br />~ Preozonation alone did not improve TOC removal. The TOC levels in the <br />non-ozonated and ozonated settled water were approximately the same. <br />However, it is anticipated that the TOC removal at the full-scale ozone plants <br />will improve because of additional TOC removal in the biological filters. <br />Ozone conditions water so that biological growth can occur in the filters. <br />~ Preozonation controlled chlorination by-product (TTHMs and HAAs) <br />formation. It is very likely that the City's finished water TTHM and HAAs <br />levels would be below 0.04 and 0.03 mg/L., respectively if preozonation <br />facilities are installed at both plants. <br />~ The threshold odor numbers (TON) were not reduced significantly at both <br />plants due to preozonation. However, the odor of water changed due to <br />preozonation (from gYassy/slighUy musty to disagreeable at the Sabine WTP; <br />from musty/fishy to disagreeable at the Cherokee WTP). <br />♦ At each plant, no significant levels of bromate were fonned. <br />Plant <br />Quarter <br />1 <br />Doc <br />4.0 <br />UV-254 <br />.015 <br />SUVA <br />3.75 <br />2 <br />6.45 <br />0.32 <br />4.96 <br />Sabine Plant <br />- <br />3 <br />5.9 <br />0.157 <br />2.66 <br />4 <br />7.4 <br />0.306 <br />4.14 <br />1 <br />4.4 <br />0.086 <br />1.95 <br />Cherokee <br />2 <br />4.6 <br />0.09 <br />1.95 <br />Plant <br />_ <br />3 <br />_ <br />5.8 <br />0.121 <br />2.08 <br />4 <br />4.8 <br />0.100 <br />2.08 <br />4190, <br />1-Rl-.[S[-Nlc: HOL$ <br />