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

Method for manufacturing immersed square staggered arrangement tubular membrane bioreactor

A bioreactor and square technology, applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problem of increased manufacturing costs, inability to perform reverse cleaning of membrane modules, and weakening the development of membrane contamination layers And other issues

Inactive Publication Date: 2016-08-24
JIANGNAN UNIV
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the manufacturing cost of the flat MBR membrane module is also greatly increased, and the bubble rise process is too regular, which fails to significantly weaken the development of the fouling layer on the membrane surface.
[0003] The characteristics of these membrane modules determine that the control measures are limited, the membrane modules cannot be backwashed, and other technologies that can effectively control membrane surface pollution can only maintain the dynamic balance of the low-flux operating system in a low-flux operation mode.
[0004] The preparation of tubular MBR components has also been reported, but this technology is similar to the preparation principle of flat MBR components. The tube membranes are arranged vertically, and the gas-liquid fluid floats from bottom to top along the surface of the tube membranes, but backwashing cannot be performed.
Membrane surface fouling is also controlled based on the vertical flow rate of the aeration bubbles, the vacuum degree of the product water, and external factors, and the dynamic balance of the low-flux operation system has not been significantly improved.

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 manufacturing immersed square staggered arrangement tubular membrane bioreactor
  • Method for manufacturing immersed square staggered arrangement tubular membrane bioreactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 400 tubes with inner diameter of 8mm and length of 1200mm are coated with polyvinylidene fluoride membrane, the effective membrane area is 12m 2 , according to the square staggered arrangement, the side length is 12mm, epoxy resin is used as the packaging material, the inner cavity thickness of the box-type water collector is 40mm, the connecting pipe of the left box-type water collector is connected with the inlet of the produced water pump, and the right box-type water collection The connecting pipe of the device is connected to the backwash pump, and the produced water is used for backwashing, and a compressed air aeration pipe is arranged at the lower part. The above-mentioned tubular MBR device is placed in a domestic sewage treatment tank, the COD of the sewage influent is 4000mg / L, the water temperature is 26°C, the aeration intensity is 22:1 (air-water ratio), the vacuum degree of the pump is 25kpa, and the output water 80min, backwashing with permeated water fo...

Embodiment 2

[0019] 400 tubes with inner diameter of 8mm and length of 1200mm are coated with polyvinylidene fluoride membrane, the effective membrane area is 12m 2 , according to the square staggered arrangement, the side length is 12mm, epoxy resin is used as the packaging material, the inner cavity thickness of the box-type water collector is 40mm, the connecting pipe of the left box-type water collector is connected with the inlet of the produced water pump, and the right box-type water collection The connecting pipe of the device is connected to the backwash pump, and the produced water is used for backwashing, and a compressed air aeration pipe is arranged at the lower part. The above-mentioned tubular MBR device is placed in a domestic sewage treatment tank. The COD of the sewage influent is 4000mg / L, the water temperature is 26°C, the aeration intensity is 26:1 (air-water ratio), and the vacuum degree of the pump is 30kpa. 60min, backwashing with permeated water for 50s at 80kpa pr...

Embodiment 3

[0021] 400 tubes with inner diameter of 6mm and length of 1200mm are coated with polyvinylidene fluoride membrane inside and outside, the effective membrane area is 9m 2 , according to the square staggered arrangement, the side length is 10mm, epoxy resin is used as the packaging material, the inner cavity thickness of the box-type water collector is 40mm, the connecting pipe of the left box-type water collector is connected with the inlet of the produced water pump, and the right box-type water collection The connecting pipe of the device is connected to the backwash pump, and the produced water is used for backwashing, and a compressed air aeration pipe is arranged at the lower part. The above-mentioned tubular MBR device is placed in a domestic sewage treatment tank. The COD of the sewage influent is 4000mg / L, the water temperature is 26°C, the aeration intensity is 28:1 (air-water ratio), and the vacuum degree of the pump is 30kpa. 60min, backwashing with permeated water f...

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for manufacturing an immersed square staggered arrangement tubular membrane bioreactor (MBR). Tubular membranes are arranged in square staggered rows in the horizontal direction, and the two ends of each membrane are connected with effluent and backflushing operation respectively. A membrane assembly is immersed into a biological reaction pond, and an aerating device is mounted at the bottom of an MBR device to compress air for aeration. The flowing direction of air-liquid mixed fluid is perpendicular to the surface of a cylindrical membrane, and a remarkable inhibiting effect is achieved on a membrane face contaminated layer. Membrane face pollutants are removed through the reverse washing process to keep high membrane flux.

Description

technical field [0001] The invention belongs to the field of sewage treatment, in particular to a submerged square staggered tubular membrane bioreactor. Background technique [0002] Membrane bioreactor (MBR) is a water treatment technology that organically combines biological treatment process and membrane separation process. It has significant advantages over traditional biological treatment technology and has played an important role in the field of sewage treatment. One of the key technologies in the development of MBR is how to weaken membrane fouling. The earliest developed curtain hollow fiber MBR technology is a treatment process based on the dynamic balance among factors such as sludge concentration, pollutant characteristics, aeration rate, membrane characteristics and water production. Curtain-type hollow fiber MBR has operational problems such as broken filaments, fiber entanglement and cleaning difficulties, and people have developed a flat-plate MBR. The fla...

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): C02F3/12B01D65/02
CPCY02W10/10
Inventor 孙余凭朱春瓶
Owner JIANGNAN UNIV
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More