Method for biological denitrogenation of nitrogen-containing organic industrial wastewater

A technology for industrial wastewater and biological denitrification, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of high total nitrogen removal rate, high power consumption and increased treatment costs and other problems, to achieve the effect of high pollutant removal efficiency, low operating cost, and improved removal rate.

Active Publication Date: 2013-03-20
SICHUAN UNIV
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pre-denitrification process is also called the A/O process. This process has good adaptability to the change of wastewater quality. It does not need to add an organic carbon source and has a certain denitrification effect. However, it needs to adopt effluent backflow measures, and the power consumption is higher large, and is easily affect

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
  • Method for biological denitrogenation of nitrogen-containing organic industrial wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this embodiment, the COD concentration of nitrogen-containing organic industrial wastewater is 800 mg / L, the total nitrogen concentration is 130 mg / L, and the pH value is 7.5. The process for biological denitrification is as follows figure 1 As mentioned, the steps are as follows:

[0026] (1) At a stirring speed of 60r / min, nitrogen-containing organic industrial wastewater is input into the regulating pond from the bottom of the regulating pond through the first water inlet pump 4-1, and the pH value control device 5 and temperature control device 6 are set to The pH value of the wastewater in the regulating pool is controlled at 7.0, and the temperature is controlled at 15°C;

[0027] (2) Put the suspended filler 8 made of polyethylene into the moving bed biofilm reactor 2 and carry out biofilm cultivation. The amount of the suspended filler 8 is 60% of the effective volume of the moving bed biofilm reactor. The biofilm cultivation method is as follows: add wastew...

Embodiment 2

[0032]In this embodiment, the COD concentration of nitrogen-containing organic industrial wastewater is 800 mg / L, the total nitrogen concentration is 130 mg / L, and the pH value is 7.5. The process for biological denitrification is as follows figure 1 As mentioned, the steps are as follows:

[0033] (1) At a stirring speed of 60r / min, nitrogen-containing organic industrial wastewater is input into the regulating pond from the bottom of the regulating pond through the first water inlet pump 4-1, and the pH value control device 5 and temperature control device 6 are set to The pH value of the wastewater in the regulating pool is controlled at 8.0, and the temperature is controlled at 20°C;

[0034] (2) Put the suspended filler 8 made of polyethylene into the moving bed biofilm reactor 2 and carry out biofilm cultivation, the amount of the suspended filler 8 is 70% of the effective volume of the moving bed biofilm reactor, and the The biofilm cultivation method is as follows: add...

Embodiment 3

[0039] In this embodiment, the COD concentration of nitrogen-containing organic industrial wastewater is 800 mg / L, the total nitrogen concentration is 130 mg / L, and the pH value is 7.5. The process for biological denitrification is as follows figure 1 As mentioned, the steps are as follows:

[0040] (1) At a stirring speed of 60r / min, nitrogen-containing organic industrial wastewater is input into the regulating pond from the bottom of the regulating pond through the first water inlet pump 4-1, and the pH value control device 5 and temperature control device 6 are set to The pH value of the wastewater in the regulating pool is controlled at 7.0 and the temperature is controlled at 30°C;

[0041] (2) Put the suspended packing 8 made of polyethylene into the moving bed biofilm reactor 2 and carry out biofilm cultivation, the amount of the suspended packing 8 is 80% of the effective volume of the moving bed biofilm reactor, and the The biofilm cultivation method is as follows: a...

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

No PUM Login to view more

Abstract

The invention relates to a method for biological denitrogenation of nitrogen-containing organic industrial wastewater and belongs to the field of industrial wastewater treatment methods. The method comprises the following steps of 1, feeding nitrogen-containing organic industrial wastewater into a regulating tank with stirring so that water in the regulating tank is homogenized, 2, pouring a suspended filler into a moving-bed bio-membrane reactor, carrying out bio-membrane culture, after the bio-membrane culture, inputting the wastewater in the regulating tank into the moving-bed bio-membrane reactor, and carrying out treatment, wherein the moving-bed bio-membrane reactor operates by water continuous feeding, water continuous discharge and intermittent aeration methods, and 3, inputting the wastewater treated by the moving-bed bio-membrane reactor into an inner circulating membrane bioreactor, putting activated sludge into the inner circulating membrane bioreactor, treating by the water continuous feeding, water continuous discharge and intermittent aeration methods, treating the treated wastewater by a membrane filtration assembly of the inner circulating membrane bioreactor, and discharging it so that biological denitrogenation treatment on nitrogen-containing organic industrial wastewater is finished.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment methods, in particular to a biological denitrification method for organic industrial wastewater. Background technique [0002] At present, the treatment of industrial wastewater usually adopts physical and chemical methods and biochemical methods. Physicochemical methods are usually used in the pretreatment process of high-concentration industrial wastewater. The reaction speed is fast and the treatment effect is good, but the treatment cost of this method is too high; Pollutants and toxic substances will affect the activity of microorganisms in the biochemical treatment process, resulting in a decrease in the treatment capacity of the biochemical treatment process. Therefore, the treatment of industrial wastewater is often carried out by combining physicochemical and biochemical processes, and the biochemical treatment process is a strong guarantee for the quality of effluent. [...

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
IPC IPC(8): C02F9/14
Inventor 李慧强彭玉梅赖波杨平
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap