HJ/T 70-2001 Translated English of Chinese Standard. HJT70-2001: High-chlorine wastewater - Determination of chemical oxygen demand - Chlorine emendation methodhttps://www.chinesestandard.net, 09.02.2020 - 11 Seiten This method applies to the determination of chemical oxygen demand (COD) in high-chlorine wastewater with a chloride ion content of less than 20 000 mg/L. The detection limit of the method is 30 mg/L. It applies to the determination of COD in wastewater from oil fields, coastal refineries, oil depots, chlor-alkali plants, and deep-sea discharge wastewater. |
Häufige Begriffe und Wortgruppen
1,10-phenanthroline indicator solution absorption bottle ammonium ferrous sulfate amount of water apparent COD blank test boiling Bumping-proof glass beads chemical oxygen demand chloride ion concentration Chloride ion emendation COD in wastewater COD mg/L concentration of oxygen condensing tube consumed is converted deep-sea discharge wastewater determination of COD dichromate standard solution different chloride ion DILUTE DISSOLVE ferrous sulfate standard g of potassium HgSO4 high chloride ion High-chlorine wastewater inline conical flask ion emendation value mass concentration mercury sulfate solution ml of water ml/min mol/L oil depots oil production wastewater oxidized chloride ions PASS IN nitrogen potassium dichromate standard potassium iodide reagents RECORD the milliliters Reflux absorption device SHAKE silver sulfate Silver sulfate-sulfuric acid Sodium thiosulfate Na2S2O3 sodium thiosulfate standard solution/ml standard titration solution sulfate standard titration sulfate-sulfuric acid solution sulfuric acid 5.1 sulfuric acid solution thiosulfate standard titration titration solution 5.8 titration solution consumed volumetric flask wastewater from oil water sample