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Photocatalytic oxidation reaction- membrane separation method for processing antibiotic industry waste water

A technology of photocatalytic oxidation and catalytic oxidation, which is applied in the direction of oxidized water/sewage treatment, chemical instruments and methods, light water/sewage treatment, etc. It can solve the problems of high cost, unstable treatment effect, and difficulty in meeting industry discharge standards. , to achieve the effect of reducing the burden

Inactive Publication Date: 2006-02-15
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the large amount of biologically toxic substances contained in wastewater, purely relying on biological treatment has high cost and unstable treatment effect, and it is difficult for the effluent to meet the industry discharge standards.

Method used

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  • Photocatalytic oxidation reaction- membrane separation method for processing antibiotic industry waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0013] 15L of antibiotic pharmaceutical wastewater enters the pretreatment tank 1, the temperature of the wastewater is 25°C, the chroma is 320 times (yellow brown), and the content of suspended solids is 850mg / L. After stirring for 10 minutes at ℃, let it stand for precipitation, and take the supernatant of the treated wastewater, COD Cr From 3100mg / L to 550mg / L, the removal rate of organic matter is 82%. Then use coarse filtration (pore size 30μm) to remove fine impurities in the water, and adjust the pH of the wastewater solution to 9.0 with NaOH solution.

[0014] 5L of pretreated waste water is injected into the photocatalytic oxidation reactor 7 through the gas-liquid mixing pump 5, and the water enters from the lower part of the reactor where the ultraviolet lamp is placed, and the particle catalyst TiO 2 Loaded on a glass carrier, the glass carrier is fixed in the reactor, and the coated titanium dioxide has an area of ​​0.182m 2 , using oxygen generator 2 and ozone g...

Embodiment example 2

[0017] The method of this implementation case is the same as that of implementation case 1, and the effects of different flocculants and coagulant aids in treating wastewater are specifically investigated.

[0018] 15L of antibiotic pharmaceutical wastewater enters the pretreatment tank 1, the temperature of the wastewater is 25°C, the chroma is 320 times (yellow brown), and the content of suspended solids is 850mg / L. Add 6750mg of polyferric chloride as a flocculant and 225mg of activated silicic acid as a coagulant. After stirring for 10 minutes at ℃, let it stand for precipitation, and take the supernatant of the treated wastewater, COD Cr From 3100mg / L to 750mg / L, the removal rate of organic matter is 75%, then use coarse filtration (pore size 30μm) to remove fine impurities in the water, and adjust the pH of the wastewater solution to 9.0 with NaOH solution.

Embodiment example 3

[0020] The method of this implementation case is the same as that of implementation case 1, and the effects of different membranes for wastewater treatment are specifically investigated.

[0021] COD of wastewater treated by photocatalytic oxidizer Cr The wastewater is 88mg / L and the conductivity is 3120μs / cm. The wastewater enters the membrane separator. The membrane is a polyamide reverse osmosis membrane. The wastewater flow rate is 5L / min. It enters the membrane separator through the booster pump 8, the coarse filter 9 and the high pressure pump 10. 12. Membrane flux 30L / m 2 h, at 27°C and 1.0MPa, after separation for 1h, the COD of the permeate was measured Cr The removal rate of organic matter is 8mg / L, the removal rate of organic matter is 91%; the conductivity is 62μs / cm, the desalination rate is 98%, and the permeate can be recycled completely.

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Abstract

The invention relates to a treatment method for antibiotic pharmaceutical waste water integrated with photocatalyst oxidation reaction and membrane separation. Wherein, taking flocculations, coarse filter and adjust pH value to the waste water putting the water into photocatalyst oxidation reactor with particle titania as catalyst, ultraviolet light as light source and ozone, hydrogen dioxide or chlorine dioxide as oxidizer; degradating organic in water; forcing the waste water into membrane separator to catch most inorganic salt and organic of 97% removal ratio and 98% desalinization ratio and satisfy the recycle standard. This method has high efficiency and the yielding water is colourless and clear.

Description

technical field [0001] The invention relates to a method for treating antibiotic pharmaceutical industrial wastewater by integrating photocatalytic oxidation reaction-membrane separation, and belongs to the technical field of pharmaceutical wastewater treatment. Background technique [0002] Antibiotic wastewater is a kind of organic wastewater containing intermediate products, residual antibiotics and organic solvents produced in the antibiotic production process. This type of wastewater has complex components and contains a variety of refractory substances and antibiotics with antibacterial effects. Among them, the content of organic matter, soluble and colloidal solids, and suspended matter is high, the pH range is large, the temperature is high, and it has color and smell. Biological toxicity. At present, aerobic, anaerobic or anaerobic plus aerobic biological treatment methods are mainly used for the treatment of antibiotic industrial wastewater at home and abroad. Ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/52C02F1/32C02F1/72C02F1/44
Inventor 王志解利昕顾俊璟樊智锋王纪孝
Owner TIANJIN UNIV
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