Highly efficient treatment process for waster water with high content of salt

Abstract

A high efficient processing technique for hypersaline waste water generates aerobic granular sludge in a sequencing batch reactor and adopts certain startup method and sluge domestication method, in condition of without halophilic bacteria, sludge in the reactor realize aggregating growth and form composite microecology, so hypersaline waste water can be processed effectively and resistance to salinity shock of the system can be improved.

Description

Technical field [0001] The patent of the present invention relates to an industrial sewage treatment technology, especially a technology that can use a special biofilm --- aerobic granular sludge in a high-salt wastewater treatment system to achieve efficient treatment. Background technique [0002] At present, the well-known industries such as oil exploration, printing and dyeing, pharmaceuticals, and seafood processing will produce a large amount of high-salt wastewater (salinity NaCl is above 15g / L), and high salt will be toxic to, inhibit and damage the organisms in the wastewater treatment system. The effect of destroying the sedimentation performance of the sludge makes it difficult for the ordinary activated sludge method to effectively treat high-salt wastewater. Ordinary activated sludge method has low treatment efficiency and poor resistance to salinity shock when treating high-salt wastewater. At present, the method of inoculating halophilic microorganisms is gen...

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Problems solved by technology

[0002] At present, the well-known industries such as oil exploration, printing and dyeing, pharmaceuticals, and seafood processing will produce a large amount of high-salt wastewater (salinity NaCl is above 15g / L), and high salt will be toxic to, inhibit and damage the organisms in the wastewater treatment system. Destroying the sedimentation performance of sludge makes it difficult for ordinary activated sludge methods to effectively treat high-salt wastewater

Ordinary activated sludge method has low treatment efficiency and poor resistance to salinity impact when treating high-salt wastewater

At present, the method of inoculating halophilic microorganisms to effectively treat organic matter is generally used in the treatment of high-salt wastewater, but the inoculation of halophilic bacteria is limited by conditions, and halophilic microorganisms are also subject to competition from indigenous microorganisms in the sewage treatment system, resulting in this problem. The cost of the treatment method is high, and the treatment effect is difficult to guarantee for a long time[1]

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