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Method for deeply treating secondary biochemical tail water of fermented pharmaceutical wastewater

A pharmaceutical wastewater, secondary biochemical technology, applied in the direction of chemical instruments and methods, filtration treatment, special treatment goals, etc., can solve the problems of incomplete degradation of dissolved organic matter, secondary pollution, secondary pollution of sludge, etc., and achieve improvement The treatment effect of dissolved organic matter is poor, the water quality of the effluent is improved, and the treatment effect is good

Active Publication Date: 2020-11-03
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the high cost of activated carbon in the adsorption method is difficult to regenerate, and it is easy to cause secondary pollution; the membrane separation technology has serious membrane pollution problems; the coagulation and sedimentation method has a large amount of coagulant dosage, and the sludge is prone to secondary pollution
The advanced oxidation method is incomplete in the degradation of dissolved organic matter and the mineralization rate is low
It is difficult for a single process to meet the requirements of the advanced treatment process of fermented pharmaceutical wastewater, and it is difficult to achieve a stable discharge standard. The advanced treatment of fermented pharmaceutical wastewater needs to be combined

Method used

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  • Method for deeply treating secondary biochemical tail water of fermented pharmaceutical wastewater
  • Method for deeply treating secondary biochemical tail water of fermented pharmaceutical wastewater
  • Method for deeply treating secondary biochemical tail water of fermented pharmaceutical wastewater

Examples

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Embodiment 1

[0027] Embodiment 1: This embodiment is carried out with the secondary biochemical tail water of an antibiotic pharmaceutical pharmaceutical factory as the object. The method for the advanced treatment of the secondary biochemical tail water of fermented pharmaceutical wastewater includes the following steps:

[0028] Step 1: Add hydrochloric acid to the fermented pharmaceutical wastewater, adjust the pH of the fermented pharmaceutical wastewater to 3, and then add iron-carbon particles to the fermented wastewater at a rate of 50g / L, with a particle size of 2cm 3 , the mass ratio of iron to carbon is 15:1, and then the catalyst is added at 20g / L to the fermentation pharmaceutical wastewater, and the catalyst is made of 1mm 3 Activated carbon particles, MnO 2 Powder and NaCl powder are pressed into 8mm according to the mass ratio of 5:2:1 3 Square particles, carry out electromagnetic stirring for 30min, filter after the completion of electromagnetic stirring, filter using 100 ...

Embodiment 2

[0031] Embodiment 2: This embodiment is carried out with the secondary biochemical tail water of an antibiotic pharmaceutical pharmaceutical factory as the object. The method for the advanced treatment of the secondary biochemical tail water of fermented pharmaceutical wastewater includes the following steps:

[0032] Step 1: Add hydrochloric acid to the fermented pharmaceutical wastewater, adjust the pH of the fermented pharmaceutical wastewater to 3.2, and then add iron-carbon particles to the fermented wastewater at a rate of 50g / L, with a particle size of 2cm 3 , the mass ratio of iron to carbon is 26:1, and then the catalyst is added to the fermentation pharmaceutical wastewater at a rate of 20g / L, and the catalyst is 1mm 3 Activated carbon particles, MnO 2 Powder and NaCl powder are mixed according to the mass ratio of 5:2:1, and pressed into 8mm 3 Square particles, carry out electromagnetic stirring for 40min, filter after the completion of electromagnetic stirring, fi...

Embodiment 3

[0035] Embodiment 3: This embodiment is carried out with the secondary biochemical tail water of an antibiotic pharmaceutical pharmaceutical factory as the object. The method for the advanced treatment of the secondary biochemical tail water of fermented pharmaceutical wastewater includes the following steps:

[0036] Step 1: Add hydrochloric acid to the fermented pharmaceutical wastewater, adjust the pH of the fermented pharmaceutical wastewater to 3.5, and then add iron-carbon particles to the fermented wastewater at a rate of 50g / L, with a particle size of 2cm 3 , the mass ratio of iron to carbon is 28:1, and then 20g / L of catalyst is added to the fermentation pharmaceutical wastewater, and the catalyst is 1mm 3 Activated carbon particles, MnO 2 Powder and NaCl powder are mixed according to the mass ratio of 5:2:1, and pressed into 8mm 3 Square particles, carry out electromagnetic stirring for 50min, filter after the completion of electromagnetic stirring, filter with 120 ...

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Abstract

The invention discloses a method for advanced treatment of secondary biochemical tail water of fermented pharmaceutical wastewater, and relates to the technical field of industrial wastewater advancedtreatment. The method comprises the following steps: 1) carrying out microfiltration pretreatment on the secondary biochemical tail water of the fermented pharmaceutical wastewater; (2) introducing the effluent in the step (1) into an ozone reactor, then introducing mixed gas of O3O2, and reacting for 5-30 minutes; and 3) introducing the effluent in the step 2) into a reverse osmosis system, anddischarging the reverse osmosis produced water after reaching the standard. By adopting an ozone-reverse osmosis combined process, soluble organic matters in the sewage can be effectively removed, sothat the sewage discharge meets the requirements, and meanwhile, the environmental risk of secondary effluent of the pharmaceutical wastewater is reduced. The method has the advantages of simple equipment, simplicity and convenience in operation, economy, reasonability and the like, and has an efficient treatment effect and high stability. The method makes up for the defect of poor removal effectof organic matters in the fermented pharmaceutical wastewater in the prior art.

Description

technical field [0001] The invention relates to the technical field of advanced treatment of industrial wastewater, in particular to a method for advanced treatment of secondary biochemical tail water of fermentation pharmaceutical wastewater. Background technique [0002] With the rapid rise of my country's pharmaceutical industry, the production capacity of the pharmaceutical manufacturing industry ranks among the top in the world, and it is also the world's leading exporter of chemical and biological pharmaceuticals, especially raw materials. Fermentation pharmaceutical technology makes full use of the growth characteristics of microorganisms, has broad market prospects, and occupies a major position in the current pharmaceutical production. In recent years, the quality of my country's water environment has continued to deteriorate, and groundwater resources have become increasingly tense. Advanced treatment and effective reuse of industrial wastewater are effective ways ...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F103/34C02F101/30
CPCC02F9/00C02F2103/343C02F1/441C02F1/78C02F2305/02C02F2101/30C02F1/001C02F1/32C02F1/722C02F1/725C02F1/444C02F1/50C02F1/36C02F2303/04C02F2305/10C02F1/461
Inventor 耿金菊石玉飞李胜楠许柯任洪强
Owner NANJING UNIV