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Device for simulating in-situ river course sediment anaerobic ammoxidation process, and use method and application thereof

A technology of anaerobic ammonium oxidation and river sediment, which is applied in anaerobic digestion treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problems of river water deterioration and achieve low cost, convenient production, Versatile Effects

Active Publication Date: 2015-02-04
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The problem to be solved by the present invention is to solve the increasingly serious problem of river water body deterioration and the existing device is difficult to analyze the influence of multi-factor changes on the anaerobic ammonium oxidation process of river sediment. The method and device of the process can effectively improve the denitrification effect of the in-situ water body of the river, thereby improving the water quality of the river and promoting the research on the ecological restoration of the in-situ river

Method used

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  • Device for simulating in-situ river course sediment anaerobic ammoxidation process, and use method and application thereof
  • Device for simulating in-situ river course sediment anaerobic ammoxidation process, and use method and application thereof
  • Device for simulating in-situ river course sediment anaerobic ammoxidation process, and use method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Indoor simulation experiment (investigate the change of ammonia nitrogen concentration in the water body with time in the simulation experiment device)

[0042] During the experiment, the water samples in the device were collected every 5 days, and the water quality analysis was carried out in the laboratory to obtain the changes of the ammonia nitrogen concentration over time. After sampling and determination, the experimental results are as follows: figure 2 As shown, with the increase of culture time, the concentration of ammonia nitrogen gradually decreased, the highest was 1.15mg / L, and the lowest was 0.056mg / L.

Embodiment 2

[0044] Indoor simulation experiment (investigate the change of nitrite nitrogen concentration in the water body with time in the simulation device)

[0045] During the experiment, the water samples in the device were collected every 5 days, and the water quality analysis was carried out in the laboratory to obtain the change of the nitrite nitrogen concentration over time.

[0046] After sampling and determination, the experimental results are as follows: image 3 As shown, with the increase of culture time, the concentration of nitrite nitrogen also decreased, the highest was 0.038mg / L, and the highest was 0.015mg / L.

Embodiment 3

[0048] Indoor small test (to investigate the changes in the abundance of anammox bacteria in the river sediment in the simulated device with the growth of culture time in different treatment groups)

[0049] The device for simulating the anaerobic ammonium oxidation process of in-situ river (Qingshui River) includes 1, circulating water outlet 2, temperature probe 3, halogen lamp 4, culture solution inlet 5, circulating water inlet 6, denitrifying bacteria carrier 7, column 8 , water body sampling port 9, submerged plant (Elodea) 10, bottom mud slice 11, bottom mud pore water sampling port 12, bottom plug 13, agitator 14, static gas collection box 15, gas collection port 16, dissolved oxygen Probe 17, computer 18, water storage tank 19, peristaltic pump. The distances from the sampling port 12 on the outer surface of the test column 11 to the bottom are 20 cm, 30 cm, and 40 cm, respectively. The bottom mud inlet of the simulation device is set from the mud-water interface. S...

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Abstract

The invention belongs to the technical field of ecological engineering, and particularly relates to a device for simulating an in-situ river course sediment anaerobic ammoxidation process, and a use method and application thereof. The device is composed of an organic glass column, a gas collection box on the top of a test column, a water body temperature control system on the surface of the double-layer organic glass column, a computer monitoring unit and an in-situ water body water storage unit. The inside of the simulation test column is provided with a submerged plant (waterweed), an in-situ sediment deposit, a temperature probe, a pH probe and a dissolved oxygen probe. The device can implement real-time monitoring on the temperature, pH and dissolved oxygen in the whole simulation culture process, and can regularly complete determination of gas production condition in the device, determination of the concentration of water body nutritive salts and determination of the anaerobic ammoxidation bacteria related function gene copy number in the sediment deposit. The device is simple in structure, can be operated indoors and outdoors, has favorable effect on simulating the river course anaerobic ammoxidation process, and is convenient to manufacture and low in cost.

Description

technical field [0001] The invention belongs to the technical field of ecological engineering, and in particular relates to a device for simulating the anaerobic ammonium oxidation process of in-situ river sediment, its use method and application Background technique [0002] With the rapid development of my country's economy, the discharge of pollutants such as nitrogen and phosphorus in areas along rivers and lakes has increased year by year, and the water quality of rivers has become increasingly serious. Concentrate on the increase of eutrophication of river water quality. Eutrophication of water body refers to the excessive nitrogen and phosphorus entering the water body to cause abnormal reproduction of algae and aquatic organisms, changes in dissolved oxygen and transparency of the water body, resulting in deterioration of water quality. Anaerobic ammonium oxidation bacteria widely exist in rivers and freshwater lakes. Due to the anoxic environment of eutrophic water...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/32
CPCC02F3/28C02F3/307C02F3/327C02F2301/10C02F2209/38C02F2301/00C02F2209/22C02F2209/06C02F2209/05C02F2209/02C02F2103/007Y02A20/402Y02W10/10
Inventor 李正魁韩华杨张万广朱倩王晶晶
Owner NANJING UNIV
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