Application of Pd-TiO2 photocatalyst in algae inhibition and algae inhibition and denitrification reactor

A photocatalyst and reactor technology, used in chemical instruments and methods, special compound water treatment, light water/sewage treatment, etc., can solve problems such as difficult operation, rebound growth of algae, secondary pollution of water bodies, etc., and reduce ammonia nitrogen content. , the effect is significant, the effect of improving the effect

Pending Publication Date: 2020-08-11
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above technologies all face many deficiencies in the process of algae inhibition. The algae removal time is too long and the operation is difficult. Incomplete treatment will lead to the possibility of rebound growth of algae after treatment; chemical algae inhibition will bring secondary pollution to the water body. risks of

Method used

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  • Application of Pd-TiO2 photocatalyst in algae inhibition and algae inhibition and denitrification reactor
  • Application of Pd-TiO2 photocatalyst in algae inhibition and algae inhibition and denitrification reactor
  • Application of Pd-TiO2 photocatalyst in algae inhibition and algae inhibition and denitrification reactor

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Embodiment 1

[0027] Pd-TiO 2 Application of photocatalyst in inhibiting algae, the Pd-TiO 2 The photocatalyst is the nanomaterial TiO loaded with noble metal Pd (palladium) 2 . The doping molar concentration of Pd in ​​the photocatalyst is 5%. Pd-TiO 2 The photocatalyst is placed in water and irradiated with visible light to inhibit algae cells; the specific principle is as follows: Pd-TiO 2 The photocatalyst will form an efficient electron-hole separation under the irradiation of incident light, and the electrons will form active oxygen radicals (O 2- .), the holes split water to produce hydroxyl radicals (OH - ), these free radicals (ROS) will cause chlorophyll a to be directly oxidized, attack pigments and active proteins at the same time, and accelerate the death of algae cells. When ROS accumulates in a large amount in the chloroplast of algal cells, it will intensify the inhibition of light-harvesting proteins and achieve the effect of inhibiting algae. The ROS generated by ph...

Embodiment 2

[0029] Such as figure 1 As shown, the algal denitrification reactor includes a reaction tank, a catalyst filling layer 4, a denitrification microbial layer 9, a photocatalytic lamp 6, an aeration pump 7, a chlorophyll a sensor 3 and a controller. A water inlet 1 is opened on the top of one end of the reaction tank, and a water outlet 8 is opened on the bottom of the other end. The water outlet 8 of the reaction pool is provided with a chlorophyll a sensor 3 of model S600-C. The S600-C chlorophyll a sensor 3 can detect the content of chlorophyll a in the water output from the reaction tank in real time, so as to feed back the algae inhibition effect of the present invention to the staff.

[0030] The denitrification microbial layer 9 is arranged in the middle of the reaction tank, and separates the water inlet 1 and the water outlet 8 of the reaction tank. The denitrification microorganism layer 9 is provided with an aeration pipe 7, a temperature monitoring device 2 and a de...

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Abstract

The invention discloses an application of a Pd-TiO2 photocatalyst in algae inhibition and an algae inhibition and denitrification reactor. The existing algae treatment technology has the defects of overlong algae removal time and difficulty in operation. The invention provides the application of the Pd-TiO2 photocatalyst in algae inhibition. The Pd-TiO2 photocatalyst is a nano catalytic material TiO2 loaded with noble metal Pd. The invention relates to an integrated photo-catalytic inhibition algae denitrification reactor which comprises a reaction tank, a catalyst filling layer, a denitrification microorganism layer and a photo-catalytic lamp, according to the invention, the precious metal palladium (Pd)-loaded nano material titanium dioxide (TiO2) is used as an algae-inhibiting photocatalytic material, and compared with the existing algae-inhibiting photocatalyst, the Pd-TiO2 photocatalyst can achieve a more remarkable algae-inhibiting effect in a shorter time. Besides, the temperature monitoring device is matched with the photocatalytic lamp, so that the temperature of the water body can be kept, and damage to denitrifying microorganisms due to over-high water temperature is avoided.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a reactor for inhibiting algae denitrification, which is suitable for inhibiting or preventing the growth of algae in algae-containing waters such as rivers and lakes. Background technique [0002] In recent decades, due to human activities, water eutrophication has become increasingly serious, and cyanobacterial blooms have occurred frequently, which has attracted widespread attention. Slow-flowing water bodies such as lakes, estuaries, and bays are rich in nutrients such as nitrogen and phosphorus. The algae in the water body multiply rapidly, resulting in a decrease in the oxygen content and transparency of the water body, causing a large number of aquatic organisms to die, and the water quality is seriously polluted. The source is very dangerous. [0003] At present, in the algae treatment technology, many new anti-algae technologies and means have emerge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F101/16
CPCC02F3/34C02F1/30C02F2305/10C02F2101/16
Inventor 张杭君卢诗焕丁佳锋
Owner HANGZHOU NORMAL UNIVERSITY
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