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

A treatment process, high salt content technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc., can solve the problem of poor resistance to salinity impact, long-term guarantee of treatment effect, Low efficiency and other problems, to achieve the effect of improving the ability to resist salinity shock

Inactive Publication Date: 2007-10-17
BEIJING NORMAL UNIVERSITY
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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 resista...

Method used

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

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[0011] Figure 1 is an enlarged schematic diagram of the aerobic granular sludge formed in the high-saline wastewater treatment device and its reactor. During the start-up period of the system shown in the figure, gradually increase the salinity of the influent. When the salinity is less than 10g / LNaCl, the gradient of each salinity change is 2g / LNaCl, and at least 8 cycles are run under each salinity condition. The aerobic sludge granulation control in the treatment system is realized under the condition that the salinity is less than 10g / LNaCl, and the granulation degree is more than 75%. When better sludge granulation is achieved in the reactor and the salinity reaches 10g / LNaCl, the gradient of each salinity increase gradually changes to 3g / LNaCl and 4g / LNaCl, and when the salinity reaches 30g / LNaCl, the salinity changes The gradient is 5g / L NaCl. The start-up period ends after the aerobic granular sludge cultivation and domestication in high-salt wastewater is achieved s...

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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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Application Information

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IPC IPC(8): C02F3/12C02F3/10C02F101/12C02F101/30
CPCY02W10/10
Inventor 汪善全竺建荣
Owner BEIJING NORMAL UNIVERSITY
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