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A fast food restaurant faced growing problems with the grease interceptor located in the facility. The grease trap needed to be pumped every 6 months and the effluent was exceeding discharge limits.
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Thick with grease, cleaned every 6 months
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The management group elected to treat the problem with enzymes using ez Grease Trap, and provided the following treatment results:
PARAMETERS |
13 November
TEST RESULTS
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18 December
TEST RESULTS
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LIMITS
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WTA04-1. BIOCHEMICAL OXYGEN DEMAND (BOD5), mg/L
(By Azide Modification Dilution Technique) |
2579
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850
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700
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WTA05-1. CHEMICAL OXYGEN DEMAND (COD), mg/L
(By Open Reflux) |
6320
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1407
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1400
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WTA24-1. pH VALUE at 24 C
(By Glass Electrode) |
4.44
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4.7
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6.5 - 9.0
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WTA41-1. TOTAL SUSPENDED SOLIDS, mg/L
(By Gravimetric, Drying to Constant Weight at 103 - 105 C) |
1500
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147
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980
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WTA23-1. OIL AND GREASE, mg/L
(By Gravimetric - Petroleum Ether Extraction) |
203
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12
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70
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A visual inspection of the treated contaminant also showed a marked difference over the 1-month period.
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Effluent Sample Before Treatment
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Effluent Sample After Treatment
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Continued treatments with enzymes have reduced pumping requirements, put the restaurant back in line with discharge limits, tamed the foul odors, and restored the operation of the drain lines.
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