Biochemical comprehensive treatment method for 1, 3-propylene glycol fermentation organism waste water

A technology for fermenting microorganisms and comprehensive treatment, applied in the field of environmental protection

Inactive Publication Date: 2010-04-14
NORTHEAST DIANLI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because at present, ATAD has never been used in the treatment of 1,3PD fermentation microorganisms

Method used

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  • Biochemical comprehensive treatment method for 1, 3-propylene glycol fermentation organism waste water
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  • Biochemical comprehensive treatment method for 1, 3-propylene glycol fermentation organism waste water

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 (ATAD processing)

[0038] Such as figure 2 shown by figure 1 The concentrated 1,3-PD fermented microbial wastewater of PetroChina Jilin Petrochemical Company is pumped into the reactor through the inlet pump 2-10 of the ATAD reactor 2-7 to carry out the automatic temperature-increasing degradation reaction of the fermented microorganism; the ATAD reactor is placed in In the water bath 2-8, the outside of the water bath is provided with an insulation layer 2-6; and the aeration rate of the aeration pipe 2-5 connected to it is adjusted by the aeration pump 2-9; the stirring device 2-1 is started to adjust the stirring The speed of the device 2-1 is stirred by the stirring paddle 2-3 to carry out the automatic temperature-increasing degradation reaction of the fermenting microorganism. A thermometer 2-4 is provided on the ATAD reactor; a sampling tube 2-2 is provided at the lower left side of the reactor. See Table 1 for the quality of wastewater entering...

Embodiment 2

[0046] Embodiment 2 (UASB processing)

[0047] From image 3 It can be seen that a water inlet pipe 3-1 is provided at the lower part of the UASB reactor side, a biogas pipe 3-2 and a water outlet pipe 3-3 are provided at the top; three sampling pipes 3-4 are provided at the middle and lower part of the other side of the reactor. 10-30 parts by mass of waste liquid after ATAD treatment and 70-90 parts by mass of concentrated 1,3-propanediol fermentation microbial waste water are mixed (supernatant produced by waste water after ATAD treatment and 1,3-propanediol product The sum of liquid and waste liquids is 100 parts by mass, the waste water after the automatic temperature-increasing degradation treatment of fermentation microorganisms accounts for 10-30 parts, and the supernatant liquid waste liquid produced by 1,3-propanediol products accounts for 70-90 parts), at a temperature of At 30-60°C, it is sent to the UASB reactor, and the biogas generated during the experiment is ...

Embodiment 3

[0052] Embodiment 3 (alternate A / O processing)

[0053] From Figure 4 It can be seen that the outlet water of the UASB in the present invention enters the alternate anoxic / aerobic (alternative A / O) pool through the pipe 4-1. The alternate A / O process tank 4-4 of the device is provided with a variable wattage heating rod 4-5, and the bottom of the tank is provided with a microporous aeration head 4-6 connected with an ACO-280 electromagnetic air compressor 4-7 , the upper left of the A / O pool is provided with a water inlet pipe 4-1, and the upper right is provided with an outlet pipe 4-3. The stirring paddle installed in the A / O pool is driven by the JJ-1 type precision timing electric agitator 4-2 . The fermentation waste liquid of 1,3-PD product of PetroChina Jilin Petrochemical Company is treated by UASB process and then by alternate A / O process. See Table 3 for the water quality after alternate A / O process treatment and polyaluminum chloride coagulation treatment.

[0...

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Abstract

Disclosed is a biochemical comprehensive treatment method for 1, 3-propylene glycol fermentation organism waste water. The biochemical comprehensive treatment method includes concentration of fermentation organism, ATAD, UASB, alternating A/O and chemical coagulation; culturing and domesticating thermophilic bacteria inside an ATAD reactor first, then culturing and domesticating anaerobic activated sludge inside a UASB reactor, and finally culturing and domesticating aerobic activated sludge inside an alternating A/O pool. During a formal experiment, waste water is treated by the ATAD first so as to improve biochemical property of waste liquor and enable viral fermentation organism to be converted into substances with biochemical energy, ATAD effluent is treated by the UASB so as to further lower down concentration of organism, methane produced in the process is recycled, and final UASB effluent can achieve the B standard of first-class emission standards of national standard GB18918-2002 after treated by the alternating A/O technique and the chemical coagulation, thereby realizing safe emission and providing a novel degradation pathway for the 1, 3-propylene glycol fermentation organism waste water.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a method for treating 1,3 propanediol fermentation microbial wastewater, in particular to a biochemical comprehensive treatment method for 1,3 propanediol fermentation microbial wastewater. Background technique [0002] 1,3-Propanediol (1,3-propanediol, referred to as 1,3-PD) is a very important and promising chemical raw material, which can be used as solvent, antifreeze, protective agent, fine chemical raw material, new polymer Among the many synthetic methods for monomers of ester and polyurethane, the production of 1,3-PD by microbial fermentation is not only an important achievement in the fermentation industry, but also will become a new direction for the development of the fiber industry in the 21st century. It is a new paradigm of application in the field of raw material production and has broad market application prospects. The process of producing 1,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/52C02F103/36
Inventor 刘景明星成萍曹静王楠杨震张立弟
Owner NORTHEAST DIANLI UNIVERSITY
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