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[ Focus on Chemical Machinery Equipment Network ] Recently, the enhanced hydrolysis pretreatment technology for fermentation antibiotic production wastewater developed by the *Ecological Environment Research Center team has been successfully applied in Hebei Pharmaceutical Company.
This also means that a breakthrough has been found in the “trilemma” of difficult to treat wastewater from fermentation antibiotics, difficult to achieve stability, and difficult to be economical and efficient.
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipmentThis also means that a breakthrough has been found in the “trilemma” of difficult to treat wastewater from fermentation antibiotics, difficult to achieve stability, and difficult to be economical and efficient.
It is reported that this technology is aimed at pharmaceutical wastewater, and can effectively relieve the inhibitory effect of antibiotics on water treatment microorganisms and the driving force for the development of drug resistance, and block the spread of drug resistance in the environment.
Coincidentally, good news has also come from the previous "Water Pollution Control and Governance" national science and technology major project "Integration and Engineering Demonstration of Water Pollution Control Technology in the Whole Process of the Pharmaceutical Industry".
It is reported that in view of the high concentration of wastewater discharged from the penicillin fermentation process in the pharmaceutical industry, large acid-base changes, low carbon to nitrogen ratio, high chroma and residual antibiotics, the penicillin fermentation process specially formed by this water is optimized for raw material substitution and process control processes.
Pharmaceutical companies have been verified-fermentation waste acid water COD is reduced by 32.
7% compared with the original process, and the ammonia nitrogen in waste acid water has been reduced by 46.
5%.
Pharmaceutical companies have been verified-fermentation waste acid water COD is reduced by 32.
7% compared with the original process, and the ammonia nitrogen in waste acid water has been reduced by 46.
5%.
It is recognized that pharmaceutical wastewater is complex in composition and difficult to treat.
For example, antibiotic wastewater contains nutrient solution, fermentation residual substrate, distillation kettle residual liquid, raffinate liquid, bacterial backwash liquid and fermentation filtrate, adsorption waste liquid, etc.
Generally speaking, pharmaceutical wastewater has the characteristics of large water volume, complex water quality, high concentration of organic matter and suspended matter, high salt content, strong toxicity, deep color, and poor biodegradability.
For example, antibiotic wastewater contains nutrient solution, fermentation residual substrate, distillation kettle residual liquid, raffinate liquid, bacterial backwash liquid and fermentation filtrate, adsorption waste liquid, etc.
Generally speaking, pharmaceutical wastewater has the characteristics of large water volume, complex water quality, high concentration of organic matter and suspended matter, high salt content, strong toxicity, deep color, and poor biodegradability.
At present, the physical treatment technologies used in the treatment of pharmaceutical wastewater include coagulation sedimentation, adsorption, membrane separation, air flotation, etc.
; chemical treatment technologies include Fenton reagent method, advanced oxidation technology; and biochemical treatment technologies include UASB (upflow anaerobic Oxygen sludge bed) method, activated sludge method, SBR (sequence batch activated sludge) method, etc.
; chemical treatment technologies include Fenton reagent method, advanced oxidation technology; and biochemical treatment technologies include UASB (upflow anaerobic Oxygen sludge bed) method, activated sludge method, SBR (sequence batch activated sludge) method, etc.
The combined process is common in high-difficulty wastewater treatment systems, and is also commonly used in pharmaceutical wastewater treatment.
For example, a pharmaceutical company in Jiujiang adopted "air flotation + three-phase catalytic oxidation + pre-acidification + temperature control tank + UASB reaction tank" & "hydrolysis acidification + first-level A/O tank + first settling tank + second-level A/O tank" +Secondary sedimentation tank + Fenton oxidation + Third sedimentation tank".
The typical advantages are mature technology, small project investment, low operating cost, and high CODcr and NH3-N removal rates.
The typical advantages are mature technology, small project investment, low operating cost, and high CODcr and NH3-N removal rates.
On November 24, 2020, the "Catalogue of Major Environmental Protection Technology and Equipment Encouraged by the State (2020 Edition)" (Draft for Solicitation of Comments) was publicly solicited for comments, as of December 3, 2020.
Among them, the graphene oxide directional membrane filtration equipment is clearly marked for the deep purification and resource utilization of pharmaceutical wastewater.
This technology uses graphene oxide to prepare a high-efficiency membrane separation layer.
The rejection efficiency of negatively charged small molecule organics reaches 92% to 99.
8%, the low rejection rate of inorganic salts such as magnesium sulfate reaches 12% to 28%, and the secondary effluent recovery rate exceeds 90%.
%.
This technology uses graphene oxide to prepare a high-efficiency membrane separation layer.
The rejection efficiency of negatively charged small molecule organics reaches 92% to 99.
8%, the low rejection rate of inorganic salts such as magnesium sulfate reaches 12% to 28%, and the secondary effluent recovery rate exceeds 90%.
%.
Obviously, on the basis of continuous innovation and upgrading of pharmaceutical wastewater treatment technology, the path of cleaner production and high-quality development in the pharmaceutical industry will be smoother.
Original title: Challenge "High Difficulty"! Successive breakthroughs in pharmaceutical wastewater treatment technology
