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uv/h for deep removal of pharmaceutical micropollutants in sewage 2 o 2 Combined biological activated carbon process

A technology of bio-activated carbon and combined biology, applied in the direction of water pollutants, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as unsystematic research, and achieve the effect of simple equipment, low cost, and reduced toxicity

Active Publication Date: 2021-05-28
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Use UV / H 2 o 2 There is no systematic research on the removal of pharmaceutical micropollutants in actual sewage by combining biological activated carbon process

Method used

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  • uv/h for deep removal of pharmaceutical micropollutants in sewage <sub>2</sub> o <sub>2</sub> Combined biological activated carbon process
  • uv/h for deep removal of pharmaceutical micropollutants in sewage <sub>2</sub> o <sub>2</sub> Combined biological activated carbon process
  • uv/h for deep removal of pharmaceutical micropollutants in sewage <sub>2</sub> o <sub>2</sub> Combined biological activated carbon process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment is carried out with the secondary biological effluent of a municipal sewage treatment plant in Nanjing as the object. The UV / H 2 o 2 Combined biological activated carbon process, including the following steps:

[0035] UV / H deep removal of pharmaceutical micropollutants in sewage 2 o 2 Combined biological activated carbon process, including the following steps:

[0036] S1: Prepare a mixed solution of pharmaceutical micropollutant standard (100 μg / L), add an appropriate amount of 30wt% H 2 o 2 solution such that H 2 o 2 The molar concentration ratio of micro-pollutants is 10:1, and it is kept uniform by electromagnetic stirring. UV light is carried out through a photoreactor, and the reaction is 10 minutes, and the light power is 22W;

[0037] S2: Add nutrient source to the effluent in step S1, carbon source: COD 50mg / L, nitrogen source: NO 3-N 10mg / L, NH 4 -N 5mg / L, domesticate the biological activated carbon column (AquaSorb PICABIOL2, 8×18mes...

Embodiment 2

[0049] This embodiment is carried out with the secondary biological effluent of a municipal sewage treatment plant in Nanjing as the object. The UV / H 2 o 2 Combined biological activated carbon process, including the following steps:

[0050] UV / H deep removal of pharmaceutical micropollutants in sewage 2 o 2 Combined biological activated carbon process, including the following steps:

[0051] S1: Prepare a mixed solution of pharmaceutical micropollutant standard (500μg / L), add an appropriate amount of H2O with a concentration of 30wt% 2 o 2 solution such that H 2 o 2 The molar concentration ratio of micro-pollutants is 15:1, and it is kept uniform by electromagnetic stirring. UV light is carried out through a photoreactor, and the reaction is 20 minutes, and the light power is 100W;

[0052] S2: Add nutrient source to the effluent in step S1, carbon source: COD 50mg / L, nitrogen source: NO 3 -N 10mg / L, NH 4 -N 5mg / L, domesticate the biological activated carbon column (...

Embodiment 3

[0064] This embodiment is carried out with the secondary biological effluent of a municipal sewage treatment plant in Nanjing as the object. The UV / H 2 o 2 Combined biological activated carbon process, including the following steps:

[0065] UV / H deep removal of pharmaceutical micropollutants in sewage 2 o 2 Combined biological activated carbon process, including the following steps:

[0066] S1: Prepare a mixed solution of pharmaceutical micropollutant standard (1000μg / L), add an appropriate amount of H2O with a concentration of 30wt% 2 o 2 solution such that H 2 o 2 The molar concentration ratio of micro-pollutants is 20:1, and it is kept uniform by electromagnetic stirring. UV light is carried out through a photoreactor, and the reaction is 30 minutes, and the light power is 300W;

[0067] S2: Add nutrient source to the effluent in step S1, carbon source: COD 50mg / L, nitrogen source: NO 3 -N 10mg / L, NH 4 -N 5mg / L, domesticate the biological activated carbon column ...

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Abstract

The invention discloses a UV / H system for deep removal of pharmaceutical micropollutants in sewage 2 O 2 The combined biological activated carbon process includes the following steps: (1) Prepare a high-concentration mixed solution of pharmaceutical micropollutant standards, add H 2 O 2 Carry out UV light reaction; (2) add nutrient source domestication biological activated carbon column; (3) further stabilization and activation of biological activated carbon column; (4) sewage precipitation separation; (5) add H 2 O 2 The solution undergoes UV light reaction to decompose and mineralize the micro-pollutants in the water; (6) the effluent is treated with biological activated carbon; (7) the effluent is subjected to result analysis, disinfection and discharge. The present invention uses UV / H 2 O 2 Combined with the biological activated carbon process, it can effectively remove the pharmaceutical pollutants in the sewage, make the sewage discharge meet the requirements, and reduce the environmental risks caused by the pharmaceutical pollutants. Moreover, the present invention makes up for the shortcomings of the prior art in the incomplete removal of drugs and the increased risk of transformation products, and fills the gap in the removal technology of drug pollutants in sewage at home and abroad.

Description

technical field [0001] The invention relates to the technical field of deep purification treatment of sewage, in particular to a UV / H system for deep removal of pharmaceutical micro-pollutants in sewage 2 o 2 Combined biological activated carbon process. Background technique [0002] Drugs are new pollutants with a wide variety, which can include all kinds of prescription and non-prescription drugs widely used, such as antibiotics, non-steroidal anti-inflammatory drugs, beta-blockers, lipid regulators, pain relievers, stimulants, Sedatives and hormones etc. Pharmaceutical micropollutants are usually not completely absorbed by the human body, so the unabsorbed part will be excreted into the sewer, and can enter the water environment through various channels, including municipal sewage, direct discharge of industrial wastewater treatment plants, hospital sewage, Sewer leaks / overflows, landfill leachate, and surface runoff from urban or agricultural areas. Pharmaceutical mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/34C02F101/36C02F101/38
CPCC02F1/32C02F1/50C02F1/722C02F1/725C02F3/34C02F9/00C02F2001/007C02F2101/34C02F2101/36C02F2101/38C02F2303/04C02F2305/06
Inventor 耿金菊沈国宸许柯任洪强
Owner NANJING UNIV