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  • 污水处理运营中各项指标表示什么意思?
  • 本站编辑:四川国清源环保科技有限公司发布日期:2019-10-19 08:16 浏览次数:

污水处理运营中污水中有大量的含碳有机物与含氮有机物,前者以碳、氢、氧为基本元素。后者以氮、硫、磷为基本元素。含氮有机物在好氧分解过程中,最终会转化为氨氮肥、亚硝酸盐氮肥、硝酸盐氮、水和二氧化碳等无机物。因此污水处理运营中测定上述三个指标可反映污水分解过程与经处理后无机化的程度。

       当二级污水处理厂中只有少量亚硝酸氮出现时,该处理出水尚不能稳定,当氧量不足时,则污水处理运营中的有机氮大多数转化为无机物,出水流入水体后是较为稳定的。一般进厂污水的氨氮值约30~70mg/L。进厂水中一般不含有亚硝酸盐与硝酸盐。污水处理运营中二级污水处理厂一般不能大量除氮肥,处理程度较高时,能够将部份氨氮转化为硝酸盐氮。

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In sewage treatment operation, there are a large number of carbon-containing organic matter and nitrogen-containing organic matter in sewage treatment. The former uses carbon, hydrogen, and oxygen as the basic elements. The latter uses nitrogen, sulfur, and phosphorus as the basic elements. Nitrogen containing organic matter will eventually be converted into inorganic substances such as ammonia nitrogen fertilizer, nitrite nitrogen fertilizer, nitrate nitrogen, water and carbon dioxide during aerobic decomposition. Therefore, the determination of the above three indexes in sewage treatment operation can reflect the decomposition process and the degree of inorganic treatment after treatment.
When only a small amount of nitrite nitrogen appears in the secondary sewage treatment plant, the treated water is not yet stable. When the oxygen is insufficient, most of the organic nitrogen in the sewage treatment operation is converted into inorganic substances, and the outflow water flows into the water body. It is relatively stable. In general, the ammonia nitrogen value of sewage entering the plant is about 30 to 70 mg / L. The water entering the plant generally does not contain nitrite and nitrate. Secondary sewage treatment plants in sewage treatment operations generally can not remove large amounts of nitrogen fertilizer. When the treatment level is high, some ammonia nitrogen can be converted into nitrate nitrogen.


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