折点加氯去除氨氮（Lets add chlorine to remove ammonia nitrogen）.docVIP

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折点加氯去除氨氮（Lets add chlorine to remove ammonia nitrogen）.doc

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折点加氯去除氨氮（Lets add chlorine to remove ammonia nitrogen）

折点加氯去除氨氮（Lets add chlorine to remove ammonia nitrogen） ? 9? work factory with Urban sewage WATER back when used in circulating cooling WATER ammonia nitrogen removal of INDUSTRIAL WATER and WASTEWATER INDUSTRIAL WATER WASTEWATER Vol. 31, No. 6, 2000 jaew, Mr. Guo, circumferential (northeast China municipal engineering design and research institute, changchun, jilin, 130021 Bao xianzhi (dalian city drainage area, liaoning dalian 116,000 ) date of collection: 2000-09-19 in urban sewage, especially after secondary treatment Nitrogen, which is more than 90 percent, is in the form of ammonia, denitrification in the form of ammonia nitrogen, which is easier than the removal of nitrate nitrogen and is not required in some cases The removal of total nitrogen only requires the removal of ammonia nitrogen. Ammonia is in the industrial cycle Chlorine is increased when water is sterilized. Ammonia is special to certain metals Copper is corrosive. When recycled water is used as cooling water, it should be tested Worry about corrosion of the cooling equipment. Therefore, it is considered that it will be processed When urban sewage goes back to the industrial circulating cooling water system, ammonia nitrogen goes Except that it is important. Removal of ammonia nitrogen has the following methods: 1 fold point plus chlorine Wastewater contains ammonia and various organic nitrogen compounds, most of which are sewage Treatment plant drainage contains a considerable amount of nitrogen. If youre dealing with a second order When nitrification is completed, nitrogen is usually stored in the form of ammonia or nitrate Throughout the year. Chloric acid is very easy to react with ammonia in wastewater Three types of chloramine are formed in the reaction: And NH3 + HOCl NH2Cl (monochloramine) + H2O NH2Cl + HOCl - NHCl2 (dichloramine) + H2O NHCl2 + HOCl - NCl3 (trichloride) + H2O above reactions and p H values, temperature and contact time, and also The initial ratio of ammonia to chlorine i