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Amino benzene analog waste water biological treatment method

A biological treatment, waste water technology, applied in the direction of sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as the inability to apply fluidized bed reactors, and achieve good economic benefits and environmental protection Benefits, waste reduction, and the effect of increasing the concentration of microorganisms

Inactive Publication Date: 2007-10-10
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it has great limitations in application, such as the use of screens to fix resin particles, which cannot be applied to fluidized bed reactors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the SBR reactor with an effective volume of 1.3L, large-porous cross-linked polystyrene white balls were used as immobilized microbial carriers. The carrier volume was 4% of the effective volume of the reactor. After 20-30 days of microbial immobilization, the synthetic A stable biofilm is formed on a macroporous polymer carrier. The test wastewater is simulated p-toluidine wastewater, whose pH value is adjusted to 5-10, and nitrogen and phosphorus nutrients are added to make the wastewater COD 1100mg / L and p-toluidine concentration 327mg / L. Add 0.8L waste water to the reactor in each batch, and the water inflow mode is instantaneous water inflow. At 25°C, when the aeration rate is 0.6L / min, after aeration for 360 minutes, sediment for 30 minutes and drain. The COD in the effluent is 10.5mg / L, the concentration of p-toluidine is less than 0.5mg / L, and the concentration of ammonia nitrogen is 20mg / L.

Embodiment 2

[0023] In the SBR reactor described in Example 1, macroporous cross-linked polystyrene white balls accounting for 6% of the effective volume were added as immobilized microorganism carriers. After 20-30 days of microorganism immobilization, a stable biofilm is formed on the synthetic macroporous polymer carrier. The test wastewater is simulated p-aminophenol production wastewater, whose pH value is adjusted to 5-10, and nitrogen and phosphorus nutrients are added to make the wastewater COD 2300mg / L and p-aminophenol concentration 648mg / L. The amount of water inflow and the way of water inflow are the same as in Example 1. At 15°C, when the aeration rate is 0.9L / min, after aeration for 420 minutes, sediment for 120 minutes and drain. The COD in the effluent was 16.4mg / L, the concentration of p-aminophenol was less than 0.5mg / L, and the concentration of ammonia nitrogen was 23.9mg / L.

Embodiment 3

[0025] In the SBR reactor described in Example 1, macroporous anion exchange resin D301 accounting for 10% of the effective volume was added as the immobilized microorganism carrier. After 20-30 days of microorganism immobilization, a stable biofilm is formed on the synthetic macroporous polymer carrier. Test waste water, water intake and water intake mode are the same as embodiment 1. At 10°C, when the aeration rate is 0.9L / min, after aeration for 480 minutes, sediment for 90 minutes and drain. The COD in the effluent is 17.1mg / L, the concentration of p-toluidine is less than 0.5mg / L, and the concentration of ammonia nitrogen is 24.1mg / L.

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PUM

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Abstract

The invention discloses a method for strengthening amino benzenes production wastewater SBR biological treatment with synthesized macroporous high-molecular polymer as immobilization microbe. For the drawback of the prior microbe carrier, the invention provides a kind of synthesized high-molecular polymer as immobilization microbe, and applies it to strength amino benzenes production wastewater SBR biological treatment. Compared with prior SBR technique, when microbe carrier used is 2-10% of active volume of the reactor, and the technique condition such as aeration volume, reaction time and temperature equals, with the method, the clearance of amino benzenes materials improves by 35-60% and the concentration of ammonia nitrogen in water outlet decreases by 5-15mg / L. The invention can be applied for modifying the prior wastewater treatment device, or building new wastewater treatment device, having good economic profit and environmental benefit.

Description

technical field [0001] The present invention relates to a kind of waste water treatment method, especially a kind of method that utilizes synthetic macroporous macromolecule polymer as microbial carrier to strengthen biological processor to process the waste water of aniline production, especially a kind of method by feeding sequence batch reactor ( SBR) is added with a synthetic macroporous polymer as an immobilized microbial carrier to strengthen the biological treatment method for aniline wastewater. Background technique [0002] At present, as a cost-effective biological treatment technology for organic poisons in water, the commercial application of immobilized microorganism technology is increasing. In the biological treatment of organic chemical wastewater, the immobilized microorganism technology can effectively prevent the loss of high-efficiency microorganisms and increase the effective biomass in the reactor. Immobilized microorganisms have a good ability to with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F3/10C02F3/08C02F101/30
CPCY02W10/10
Inventor 陈金龙张波张全兴张庆建张炜铭鲁俊东李爱民翟建平
Owner NANJING UNIV
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