Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process

A biological activation and aeration technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problems of low specific surface area and oxygen utilization rate of biofilm carrier, insufficient microbial biomass, etc. , to achieve the effect of small footprint, low price and low operating cost

Active Publication Date: 2012-04-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of microorganisms to treat trace PPCPs still has technical problems such as insufficient microbial biomass, low specific surface area of ​​biofilm carriers, and low oxygen utilization efficiency.

Method used

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  • Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process
  • Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process
  • Method for treating trace pharmaceuticals and personal care products (PPCPs) in water through biological activation aeration process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Add bioactivator

[0041] In the first three days before the bioactivation aeration water treatment system is started, the bioactivator with a total concentration of 28mg / L is added to the primary aerobic tank 4 in the form of uniform spraying in water, once a day, and it is not necessary to add during normal operation. Daily input amount of bioactivator (M) According to empirical formula M=45-0.45×COD(g / m 3 )calculate. The biological activator Bio ActivationTM (abbreviated as BA, purchased from Duwei Science and Technology Environmental Protection Engineering Co., Ltd., Shunde District, Foshan City) selected in this embodiment is processed from natural organic waste, including enzyme preparations, trace elements, amino acids and polysaccharides, but not Water treatment chemicals containing microorganisms. Enzyme preparations account for 80% of the total, including 50% protease, 40% lipase and 10% cellulase. Trace elements account for 10% of the total, and trace ...

Embodiment 2

[0055] (1) Add bioactivator

[0056] In the first three days before the bioactivation aeration water treatment system is started, the bioactivator with a total concentration of 22mg / L is added to the primary aerobic tank 4 in the form of uniform spraying in water, once a day, and it is not necessary to add during normal operation. Daily input amount of bioactivator (M) according to empirical formula M=54-0.6×COD(g / m 3 )calculate. The bioactivator (purchased from Duwei Science and Technology Environmental Engineering Co., Ltd., Shunde District, Foshan City) consists of enzyme preparations, trace elements, amino acids and polysaccharides. Enzyme preparations account for 75% of the total, including 50% protease, 40% lipase and 10% cellulase. Trace elements account for 10% of the total, and trace elements are copper, zinc, manganese and cobalt. Amino acids and polysaccharides account for 15% of the total. The ratio of amino acids to polysaccharides is 2:3. Amino acids and polys...

Embodiment 3

[0070] (1) Add bioactivator

[0071] Three days before the bioactivation aeration water treatment system is started, add bioactivators with a total concentration of 45mg / L to the primary aerobic tank 4 in the form of uniform spraying in water, once a day, and do not need to be added during normal operation. Daily input amount of bioactivator (M) according to empirical formula M=50-0.28×COD(g / m 3 )calculate. The bioactivator (purchased from Duwei Science and Technology Environmental Engineering Co., Ltd., Shunde District, Foshan City) consists of enzyme preparations, trace elements, amino acids and polysaccharides. Enzyme preparations account for 80% of the total, of which protease 40%, lipase 40%, cellulase 20%; trace elements account for 10% of the total, trace elements include copper, zinc, manganese; amino acids and polysaccharides account for the total 10%, the ratio of amino acid to polysaccharide is 3:4, amino acid and polysaccharide come from food waste, amino acid is...

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Abstract

The invention provides a method for treating trace pharmaceuticals and personal care products (PPCPs) in water through a biological activation aeration process. The method comprises the following steps of: (1) in 3 to 5 days before biological activation aeration aerobic treatment, adding a biological activator at the total concentration of 10-80mg/L into a primary aerobic pond each day; and (2) performing three-stage aerobic treatment on water containing trace PPCPs, wherein an aeration quantity ratio of the first stage to the second stage to the third stage is (5-4):(3-2):(2-1), the water inlet speed is 0.01-0.1m/s, and the aeration is performed for 10 to 20 hours. By the treatment method, the operating cost is low, the occupied area is small, residual sludge is not generated, the operating and maintaining processes are simple, complicated equipment is not required to be manufactured, and the method is easy to promote and apply. When the water containing the trace PPCPs is treated bythe method, the removal efficiency is 70 to 95 percent.

Description

technical field [0001] The invention relates to water treatment technology in the field of environmental protection, in particular to domestic sewage treatment technology and treatment of slightly polluted natural water bodies. Background technique [0002] PPCPs (Pharmaceuticals and Personal Care Products) include various prescription and non-prescription drugs, such as new biogenetic drugs, antibiotics, steroids, anti-inflammatory drugs, sedatives, nutritional products, fragrances, cosmetics, soaps, shampoos, etc. PPCPs were first proposed by Christian G.Daughton in "Environmental Health Perspectives" published in 1999. As PPCPs were detected to be ubiquitous in various water bodies (including rivers, surface water, and drinking water), PPCPs are harmful to the environment and humans. The impact has attracted widespread attention (see Table 1 for common PPCPs in water bodies). [0003] Table 1 Common PPCPs in water bodies [0004] [0005] As a drug used by humans and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/32
Inventor 张锐坚黄少斌崔彬许辅乾张永清
Owner SOUTH CHINA UNIV OF TECH
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