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| 配方类型： |
MISCELLANEOUS |
| 配方说明： |
Citric Acid Cleaning Solution for Membrane Cleaning (pH 3.5, for
Iron Fouled Membranes) |
| 配制方法： |
Dissolve 10 lb citric acid anhydrous in 500 gal water to make a 0.25% solution of citric acid. Neutralize to pH 3.5 using approximately 3 lb ammonium hydroxide. Recirculate at normal operating pressures for 15 min at 100-110 F. Shut off pump and let soak for 15 min. Recirculate with no back pressure for 15 min. Flush systems with water until clear. |
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