Oxytetracycline wastewater treatment process

A technology for wastewater treatment and oxytetracycline, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply saving, etc. cost saving effect

Active Publication Date: 2014-12-24
沁浩膜技术(厦门)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the production of oxytetracycline, a large amount of wastewater will be produced, which contains oxytetracycline, protein, pigment, inorganic salt and other substances, and has the characteristics of "high COD content, high chroma and high salt content". After being mixed into other wastewater It will increase the difficulty of comprehensive production wastewater treatment, and the general sewage treatment process is difficult to discharge up to the standard

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Embodiment 1

[0036] Example 1: Oxytetracycline wastewater treatment process

[0037] ① Filtrate oxytetracycline wastewater through a centrifuge (three-legged centrifuge, rotating speed 1200 rpm, loading capacity 145kg) to obtain supernatant;

[0038] ②The supernatant is sent to the adsorption resin for adsorption (macroporous adsorption resin XAD-4);

[0039] ③ adjust the pH value of the solution after the adsorption resin is adsorbed to be 6-7;

[0040] ④ Filter with a precision filter with a precision of 1 μm, and the precision filter is stainless steel;

[0041] ⑤ Feed liquid obtained by filtration is sent to ordinary reverse osmosis membrane system for concentration;

[0042] ⑥Due to the high salt content of oxytetracycline wastewater, ordinary reverse osmosis systems need to overcome huge osmotic pressure to concentrate, and the concentration ratio is low, resulting in low recovery rate of the system and excessive residual concentrate, which is difficult to handle. Therefore, thi...

Embodiment 2

[0045] Embodiment 2: electrodialysis experiment

[0046] Electrodialysis is the process of separating different charged solute particles by using the selective permeability of semi-permeable membrane under the action of electric field. However, in the process of electrodialysis desalination, there are often substances other than salt that can also pass through the ion exchange membrane, resulting in a decrease in the yield of materials during the desalination process. In this experiment, by changing the pressure conditions of the concentration chamber and the desalination chamber, the influence of the pressure of the concentration chamber on the recovery rate of the material in the electrodialysis desalination process is studied.

[0047] experimental method:Add the configured soy sauce water with a conductivity of 20 ms / cm into the desalination chamber, and conduct the desalination experiment under the conditions of 0.03 MPa / 0.03 MPa and 0.01 MPa / 0.04 MPa in the desalinat...

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Abstract

The invention discloses an oxytetracycline wastewater treatment process. The oxytetracycline wastewater treatment process includes steps that oxytetracycline wastewater is filtered by a centrifugal machine and subjected to adsorption through adsorption resins, the potential of hydrogen (PH) value is adjusted to 6-7, filtering is performed by a precise filter which is 1 mum in precision, a common reverse osmosis membrane system is used for concentration, an electroosmosis system is used for desalination, a reverse osmosis (RO) concentrated solution serves as water supply of an electroosmosis fresh water chamber, a large part of RO dialysate directly reaches the standards to be discharged, a small part of the dialysate serves as a water supply of an electroosmosis concentrated water chamber and an electrode water chamber, inorganic salt in a fresh water chamber concentrated solution is continuously moved to the concentrated water chamber under the action of an electroosmosis electric field, a fresh water chamber low-pressure RO concentrated solution after desalination is delivered into a high-pressure RO system to be subjected to concentration to obtain a high-pressure RO concentrated solution, high-pressure RO dialysate reaches the standards to be discharged, and finally, evaporation is performed in an evaporation process. By means of the oxytetracycline wastewater treatment process, water outlet COD is smaller than 100mg / L, discharging up to standards can be directly performed, environmental protection can be achieved, and costs are saved.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to an oxytetracycline wastewater treatment process. Background technique [0002] In the production of oxytetracycline, a large amount of wastewater will be produced, which contains oxytetracycline, protein, pigment, inorganic salt and other substances, and has the characteristics of "high COD content, high chroma and high salt content". After being mixed into other wastewater It will increase the difficulty of comprehensive production wastewater treatment, and the general sewage treatment process is difficult to discharge up to the standard. Contents of the invention [0003] The object of the present invention is to provide an oxytetracycline wastewater treatment process with simple process, low cost and direct discharge of treated sewage. [0004] To achieve the above object, the invention provides a kind of oxytetracycline wastewater treatment process, it is characterized in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCY02A20/131
Inventor 黄桂辉张唐标颜文剑
Owner 沁浩膜技术(厦门)有限公司
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