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| The Applications of Bioactive Nitrogen (Super Nitro) in Paper Industry Wastewater Treatment |
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| DOI：10.11980/j.issn.0254-508X.2014.12.005 |
| Key Words:super nitro urea gradually replace activated sludge process |
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| Abstract:There are many problems such as single nutrition, lack of nitrogen and phosphorus nutrition in many industrial waste water treatment process. Bioactive nitrogen (super nitro) is a kind of liquid nitrogen source, can be the safe and efficient alternative of traditional nitrogen source: urea, normally the replacement ratio is one-third(on the weight of urea). Using super nitro as nitrogen source in paper wastewater treatment system, CODCr removal efficiency is good, ammonia nitrogen content in effluent is lower than the limit value of the regulation, SV30 is no obvious fluctuation. Microscope observations found that activated sludge zoogloea was more dense without filamentous fungi, but there were some rotifers, clock bug and projecting fiber which indicated good water quality after using the super nitro. |
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