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Device and method for treating pharmaceutical tail water

A tail water and water treatment technology, applied in water/sewage treatment, natural water treatment, water treatment parameter control, etc., can solve problems such as poor biodegradability, oxidative degradation of organic matter, toxicity of intermediate products, etc., to avoid secondary pollution , Improve the contact effect, strengthen the effect of degradation effect

Inactive Publication Date: 2017-08-04
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although oxidation treatment has good oxidative degradation ability for organic pollutants in water, the reaction between different oxidants and organic matter has strong selectivity, it is difficult to completely oxidize and degrade organic matter, and some intermediate products are also highly toxic.
Therefore, for pharmaceutical tail water with extremely poor biodegradability, how to improve the utilization rate and oxidation efficiency of oxidants and enhance the oxidative degradation effect of pollutants has become an urgent problem to be solved.

Method used

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  • Device and method for treating pharmaceutical tail water

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preparation example Construction

[0054] In the present invention, there is no special limitation on the source of the second catalyst, which can be prepared by using commercially available products or preparation methods well known to those skilled in the art. In the present invention, the preparation of the second catalyst preferably includes the following steps: immersing the carrier in a manganese nitrate solution, drying and calcining to obtain the second catalyst. In the present invention, the mass concentration of the manganese nitrate solution is preferably 5-10%, more preferably 6-8%. In the present invention, the soaking time is preferably 18-30 hours, more preferably 20-25 hours, and most preferably 22-23 hours. In the present invention, the drying is preferably room temperature evaporation. In the present invention, the calcination temperature is preferably 320-360°C, more preferably 330-350°C, most preferably 340°C; the calcination time is preferably 4-6 hours, more preferably 5 hours.

[0055] ...

Embodiment 1

[0083] This embodiment provides a pharmaceutical tail water heterogeneous catalytic ozonation advanced treatment device such as figure 1As shown, it includes: a catalytic oxidation tower, a first water distribution area is provided at the bottom of the catalytic oxidation tower, a water inlet is provided in the first water distribution area; a catalytic reaction area is provided above the first water distribution area , the first catalyst powder is placed in the catalytic reaction zone; a first orifice plate is set between the first water distribution zone and the catalytic reaction zone. The height ratio of the first water distribution area to the catalytic reaction area is 1:9; a return pipe is communicated with the upper part of the catalytic reaction area, and the return pipe is also communicated with the first water distribution area, which is suitable for Return part of the water in the catalytic reactor to the first water distribution area, a dissolved air pump is provi...

Embodiment 2

[0086] The pharmaceutical tail water discharged from the secondary biochemical treatment process of a park is treated by using the multi-phase catalytic ozone oxidation advanced treatment device for pharmaceutical tail water described in Example 1. The water quality of the waste water is: COD, 140-160mg / L; BOD 5 , 18~20mg / L, pH value is 7.2~7.5, SS is 25mg / L. The concentration of berberine in the pharmaceutical tail water is 12mg / L.

[0087] The processing method specifically includes the following steps:

[0088] (1) The pH of the pharmaceutical tail water flowing out of the adjustment tank is adjusted to 8.0, and the ozone oxidation efficiency is the highest under this pH, and the water pump is pumped into the first water distribution area at the bottom of the catalytic oxidation tower through the water inlet, and the pharmaceutical tail water The inflow of water is 0.25t / h; the pharmaceutical tail water is mixed with the water returned by the return pipe and ozone gas in t...

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Abstract

The invention provides a device and method for treating pharmaceutical tail water. The device for treating the pharmaceutical tail water comprises a catalytic oxidation tower and a composite contact stop tower, wherein a first water distribution area is arranged at the lower part of the catalytic oxidation tower; a catalytic reaction area is arranged at the upper part of the first water distribution area; a first catalyst is fed to the catalytic reaction area; a second water distribution area is arranged at the lower part of the composite contact stop tower; a contact stop area is arranged at the upper part of the second water distribution area; the contact stop area comprises a UV photocatalytic stop area communicating with the top of the second water distribution area and a fixed bed contact stop area separated from the second water distribution area. Different types of catalytic oxidation reactions are fully utilized and grading oxidation treatment is carried out on refractory organic compounds in the pharmaceutical tail water, so that removal of pollutants and efficient utilization of ozone are achieved to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a device and method for treating pharmaceutical tail water. Background technique [0002] The concentration of pollutants in the pharmaceutical tail water is high, the water quality is complex, the chroma is high, and the salt content is high. The biodegradability of antibiotics and other toxic and harmful pollutants in the wastewater is extremely poor, and the treatment is difficult. After the secondary biochemical treatment of the comprehensive pharmaceutical tail water produced in the pharmaceutical industrial park, the effluent still contains high concentrations of COD and toxic and harmful pollutants, and the effluent is difficult to meet the discharge standards stipulated by the state. Therefore, the intensive advanced treatment of pharmaceutical tail water can not only meet the urgent needs of sewage treatment plants to meet the discharge standards, but also h...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F103/34
CPCC02F9/00C02F1/32C02F1/722C02F1/725C02F1/78C02F2103/343C02F2201/322C02F2201/782C02F2209/06C02F2209/08C02F2301/046
Inventor 魏健曾萍宋永会涂响任越中刘诗月
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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