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

6 Cites 1 Cited by

AI-Extracted 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 pre...

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.

Application Domain

Semi-permeable membranesSustainable biological treatment +1

Technology Topic

PollutantMembrane configuration +7

Image

Examples

Experimental program(3)

Example Embodiment

[0016] Example 1

[0017] It consists of 400 tubes with an inner diameter of 8mm and a length of 1200mm, both inside and outside coated with polyvinylidene fluoride film, with an effective membrane area of 12m 2 , Arranged in a 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 left box-type water collector is connected to the inlet of the water pump, the right box-type water collector The receiver pipe is connected with the backwash pump, and the produced water for backwashing is provided with a compressed air aeration pipe at the lower part. Place the above-mentioned tubular MBR device in a domestic sewage treatment tank, the sewage influent COD is 4000mg/L, the water temperature is 26℃, the aeration intensity is 22:1 (air-water ratio), and the pump vacuum is 25kpa, according to the water produced Operate in the operating mode of backwashing with produced water for 60s at 60kpa pressure for 80min. Average water production 28L/m 2.h, produced water COD is 36mg/L, produced water turbidity: 0.98NTU, SS is 0.8mg/L.

Example Embodiment

[0018] Example 2

[0019] It consists of 400 tubes with an inner diameter of 8mm and a length of 1200mm that are coated with polyvinylidene fluoride film inside and outside. The effective membrane area is 12m. 2 , Arranged in a square staggered arrangement, the side length is 12mm, epoxy resin is used as the packaging material, the inner cavity of the box-type water collector is 40mm thick, the left box-type water collector is connected to the inlet of the water pump, and the right box-type water collector The receiver pipe is connected with the backwash pump, and the produced water for backwashing is provided with a compressed air aeration pipe at the lower part. Place the above-mentioned tubular MBR device in a domestic sewage treatment tank, the sewage influent COD is 4000mg/L, the water temperature is 26℃, the aeration intensity is 26:1 (air-water ratio), and the pump vacuum is 30kpa, according to the production water 60min, run in the operating mode of backwashing with produced water for 50s at 80kpa pressure. Average water production 30.3L/m 2.h, product water COD is 38mg/L, product water turbidity: 1.11NTU, SS is 0.9mg/L.

Example Embodiment

[0020] Example 3

[0021] It consists of 400 tubes with an inner diameter of 6mm and a length of 1200mm, both inside and outside coated with polyvinylidene fluoride film, with an effective membrane area of 9m 2 , Arranged in a square staggered arrangement, side length is 10mm, epoxy resin is used as encapsulation material, box-type water collector inner cavity thickness is 40mm, the left box-type water collector is connected to the inlet of the water pump, and the right box-type water collector The receiver pipe is connected with the backwash pump, and the produced water for backwashing is provided with a compressed air aeration pipe at the lower part. Place the above-mentioned tubular MBR device in a domestic sewage treatment tank, the sewage influent COD is 4000mg/L, the water temperature is 26℃, the aeration intensity is 28:1 (air-to-water ratio), and the pump vacuum is 30kpa, according to the production water 60min, run in the operating mode of backwashing with produced water for 50s at 80kpa pressure. Average water production 27.2L/m 2.h, produced water COD is 36g/L, produced water turbidity: 1.0NTU, SS is 0.9mg/L.

PUM

Property	Measurement	Unit
Thickness	40.0	mm

Description & Claims & Application Information

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