Composite medicament for preventing membrane pollution
A technology for compounding chemicals and membrane fouling, applied in the field of environmental engineering, can solve the problems of high investment in membrane-bioreactor infrastructure, inconvenient operation and management, and increased operating costs, and achieves the effects of small investment, simple operation and management, and low operating costs.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0034] The experimental device is an integrated membrane bioreactor. The experimental device is composed of a high-level water tank, an inlet pipeline, a balance tank, a bioreactor, a membrane module, an outlet pipeline, an aeration system, and a piezometer pipeline. Raw water enters the balance water tank by gravity from the high water tank, and the liquid level of the reactor is maintained by the float valve in the balance water tank. The cross-section of the bioreactor is a rectangular plexiglass column with a cross-section of 0.30×0.20m and an effective water depth of 0.75m. The membrane module is a polyvinylidene fluoride hollow fiber curtain membrane (PVDF), with a membrane pore size of 0.2 μm, a fiber inner diameter of 0.5 mm, an outer diameter of 0.8 mm, and a membrane area of 1 m 2 . The sand filter aeration head of the bioreactor provides the dissolved oxygen required by the microorganisms in the aeration tank and generates cross-flow fluid to scour the membrane s...
Embodiment 2
[0039] The test device of this embodiment is the same as the test device of embodiment 1. In 1# reactor, add the anti-pollution compound agent of 1mg / L, 2# reactor does not add anti-pollution compound agent, the compound agent that adds is made of powdered activated carbon (80-100 orders of effective particle size) powdered activated carbon 50%, 25% ferric chloride, 5% polyaluminum chloride, 5% polyacrylamide, 10% calcium hydroxide, and 5% aluminum sulfate are used for parallel comparative tests. The test results are shown in Table 2 and drawn as image 3 , where TMP is the transfer pressure difference inside and outside the membrane, which is the main parameter to measure membrane fouling, and t is the running time.
[0040] Membrane pressure difference (KPa)
[0041] From Table 2 and image 3It can be concluded that the membrane fouling rate of the reactor added with the anti-membrane fouling compound agent is 0.0702KPa / d, while the membrane fouling rate of the...
Embodiment 3
[0043] The test device of this embodiment example is the same as the test device of Example 1. In 1# reactor, add the anti-pollution compound agent of 1mg / L, 2# reactor does not add anti-pollution compound agent, the compound agent that adds is made of powdered activated carbon (effective particle diameter 80-100 order) powdered activated carbon 40%, 30% of ferric chloride, 5% of polyaluminum chloride, 10% of polyacrylamide, 10% of calcium hydroxide, and 5% of aluminum sulfate are used for parallel comparative tests. The test results are shown in Table 3 and plotted as Figure 4 , where TMP is the transfer pressure difference inside and outside the membrane, which is the main parameter to measure membrane fouling, and t is the running time.
[0044] Membrane pressure difference (KPa)
days of operation
Reactor 1
Reactor 2
10
3.000
2.000
20
3.234
2.340
30
5.850
3.220
40
1...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Membrane pore size | aaaaa | aaaaa |
| The inside diameter of | aaaaa | aaaaa |
| Outer diameter | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
