Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Device for pyridine mineralization simultaneous denitrification through nano-iron oxide

A ferroferric oxide and nanometer technology, which is applied in chemical instruments and methods, aerobic and anaerobic process treatment, water pollutants, etc., can solve the problems of pyridine-containing wastewater degradation and low denitrification efficiency, and achieve good electron conduction Features, tight combination, and the effect of reducing the loss of iron

Pending Publication Date: 2019-09-27
南京润科环境有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings of the prior art in the degradation and denitrification efficiency of pyridine-containing wastewater, the present invention provides a device that utilizes nano-ferric oxide to strengthen pyridine mineralization and denitrification synchronously

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device for pyridine mineralization simultaneous denitrification through nano-iron oxide
  • Device for pyridine mineralization simultaneous denitrification through nano-iron oxide
  • Device for pyridine mineralization simultaneous denitrification through nano-iron oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A device for synchronous denitrification of pyridine mineralization enhanced by using nanometer iron ferric oxide, including a water inlet tank 1, a UASB anoxic reactor 2, an ABR anaerobic baffle reactor 3, a first sedimentation tank 4, and a MBBR mobile bed biofilm aerobic device 5 and effluent pool 6; the upper end of the UASB anoxic reactor 2 is provided with a first overflow pool 7, and the upper end of the UASB anoxic reactor 2 passes through the first overflow pool 7 and ABR anaerobic reflux The reactors 3 are connected; the upper end of the MBBR moving bed biofilm aerobic device 5 is provided with a second overflow pool 8, one end of the second overflow pool 8 is connected with the outlet pool 6, and the other end of the second overflow pool 8 The first return pipe 21 is connected to the bottom of the UASB anoxic reactor 2 .

[0042] The ABR anaerobic baffle reactor 3 includes a first anaerobic zone 10, a second anaerobic zone 11, and a microaerobic zone 12 arran...

Embodiment 2

[0054] The first stage of reaction: This example takes pyridine-containing wastewater as the treatment object. The anaerobic sludge of the urban sewage treatment plant was used as the initial inoculation sludge, and nano-ferric oxide was added to the anaerobic sludge and stirred to mix the nano-ferric oxide and the sludge evenly. The activated sludge added with nano-ferric oxide is respectively put into each reactor of the device, so that the concentration of nano-ferric oxide in the reactor is 1000 mg / L. The temperature of the reactor is kept at 35±2°C, the total volume of the reactor is 14L, and the hydraulic retention time is 4 days. The pH of the reactor is 7.0-7.6, the concentration of pyridine in the wastewater is 500 mg / L, and the concentration of the added carbon source sodium acetate is 500 mg / L. The sludge concentration in the reactor is 8g / L, and the particle size of nano-ferric oxide is kept at about 50nm. The influent water passes through the anoxic-anaerobic-mi...

Embodiment 3

[0057] The second stage of reaction: this reaction stage is different from Example 2 in that no additional carbon source (external carbon source sodium acetate) is added to the influent, and pyridine is used as the only carbon source and nitrogen source for pyridine degradation. The concentration of pyridine in the waste water is 500 mg / L, and others are identical with embodiment 2.

[0058] Depend on Figure 5-7 As shown, with the removal of the easily degradable carbon source sodium acetate, the reaction device uses highly toxic pyridine as the only carbon and nitrogen source, and the pyridine degradation and nitrification effects are not inhibited but further improved. After anoxic and anaerobic degradation, the removal rate of pyridine was as high as 64.1±0.8%, and only 186 mg / L of pyridine remained in the anaerobic effluent, which indicated the good promotion effect of nano-ferric oxide.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
Login to View More

Abstract

The invention relates to a device for pyridine mineralization simultaneous denitrification through nano-iron oxide. The device comprises a water inlet pool, a UASB anoxic reactor, an ABR anaerobic baffling reactor, a first settling pool, an MBBR moving bed biological membrane aerobic device and a water outlet pool which are sequentially connected. The upper end of the UASB anoxic reactor is provided with a first overflow pool. The upper end of the UASB anoxic reactor is connected with the ABR anaerobic baffling reactor through the first overflow pool. The upper end of the MBBR moving bed biological membrane aerobic device is provided with a second overflow pool. One end of the second overflow pool is connected with the water outlet pool. The other end of the second overflow pool is connected with the bottom of the UASB anoxic reactor through a first backflow pipe. Degrading bacteria and nitrifying bacteria are effectively intercepted, sludge loss is reduced, the high pyridine degradation efficiency is ensured, the nitrifying efficiency is improved, and the long-term effective and stable operation of the reaction device is guaranteed.

Description

technical field [0001] The invention relates to a device for strengthening pyridine mineralization and synchronous denitrification by using nanometer iron ferric oxide, and belongs to the technical field of biointensive treatment of environmentally refractory organic pollutants. Background technique [0002] In the technical field of sewage treatment, pyridine is a typical nitrogen-containing heterocyclic compound, which is a refractory toxic and harmful organic compound. Pyridine and its derivatives are widely used in pesticides, dyes, medicines, catalysts, deformation agents and other industries. Pyridine is volatile and has obvious teratogenic and carcinogenic properties. Therefore, if the wastewater containing pyridine is discharged without treatment, it will cause serious pollution and harm. [0003] At present, the biological treatment process plays an important role in pyridine degradation. Biological treatment refers to the method of using microorganisms to metabol...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F101/38C02F101/16
CPCC02F3/30C02F2101/16C02F2101/166C02F2101/163C02F2101/38
Inventor 刘润
Owner 南京润科环境有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com