Strengthened autotrophs desulphurization apparatus with complex function

An autotrophic, composite function technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem of low reactor processing capacity, limited membrane surface area, and low hydrogen solubility and other problems, to achieve the effect of strengthening sulfate reducing ability, improving bacterial adaptability, and high treatment efficiency

Active Publication Date: 2011-06-29
TSINGHUA UNIV
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Problems solved by technology

The disadvantage of this method is that a large gas pressure needs to be used. Due to the low solubility of hydrogen, the gas needs to be separated from H 2 S. After being compressed and recycled, the power cost is relatively high, and the safety hazard is relatively large during the cycle compression process
The problem with this method is that microorganisms attach and grow on the surface of the membrane. Due to the limited surface area of ​​membrane filaments, the biomass is low and the reactor processing capacity is low.
Increasing the amount of bio-adhesion on the surface of the membrane filament is conducive to improving the treatment capacity, but at the cost of blocking the membrane pores and reducing the mass transfer performance
In addition, autotrophic growth is slow, and microbial metabolic processes need to be strengthened

Method used

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  • Strengthened autotrophs desulphurization apparatus with complex function
  • Strengthened autotrophs desulphurization apparatus with complex function
  • Strengthened autotrophs desulphurization apparatus with complex function

Examples

Experimental program
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Embodiment 1

[0023] A device for strengthening autotrophic biological desulfurization with multiple functions, such as figure 1 As shown, the device is mainly composed of a cathode chamber 9 and an anode chamber 21. The cathode chamber 9 and the anode chamber 21 are separated by a proton membrane 19, and the shape-stable anode 20 is placed in the anode chamber 21 (the anode material is ruthenium-plated titanium). The cathode chamber 9 is mainly composed of a uniform water distributor 11 and a multifunctional three-dimensional composite biocathode, and the multifunctional three-dimensional composite biocathode (such as figure 2 shown) is mainly composed of a hydrogen supply system air intake chamber 13, a membrane wire 10, a conductive porous flexible carbon material 8 coated on the surface of the membrane wire (the carbon material is graphite felt), and fixed on one side of the flexible carbon material 8 to facilitate communication with the outside. Circuit-connected guide rods 17 (the gu...

Embodiment 2

[0028] The device of Example 1 was used to carry out self-distributing sulfate reduction. The hollow fiber membranes used were 300 polypropylene hollow fiber membranes (hydrophobic) produced by Tianjin Seawater Desalination Institute Blue Cross Membrane Technology Co., Ltd., with an effective length of 300mm. The conductive porous flexible carbon material adopts graphite felt (produced by Morgan Company) 300×150×5mm, and the specific surface area is 2000m 2 / g. Wrap the membrane filament inside the graphite felt and seal the end of the membrane filament. Roll the graphite felt coated with membrane wire into a cylindrical shape, sew it with non-conductive and corrosion-resistant materials such as nylon rope, and tightly bond it with graphite rods (25 × 6mm) to facilitate external circuit wiring. The cathode chamber adopts a cylindrical shape, the anode adopts a square shape, and the anode material is a porous mesh titanium electrode coated with ruthenium.

[0029] The power su...

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Abstract

The invention discloses a device with complex function to intensify the desulfuration of autotrophic organisms, belonging to the water treatment technical field. The device mainly comprises a cathode chamber and an anode chamber which are separated by a proton membrane; wherein, the anode chamber is internally put with dimensional stability anode; the cathode chamber mainly comprises an uniform water-locator and a multifunction three-dimensional compound biology cathode which mainly comprises a hydrogen supply system air inlet chamber, membrane wires, an electric conduction porous flexible carbon material clad on the surface of the membrane wires and a diversion rod which is fixed on one side of the flexible carbon material and is convenient for external circuit to be connected; sulfate reducing bacteria is attached to the electric conduction porous flexible carbon material carrier and the surface of the membrane wires; the external circuit is supplied by power supply. The device has the advantages of high treatment efficiency, low consumption, stable operation and low investment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a device for strengthening autotrophic biological desulfurization with multiple functions. Background technique [0002] High sulfate and high hardness mine water is widely distributed in Henan, Jiangsu, Shandong, and Anhui coal mining areas in my country, and causes varying degrees of sulfate pollution on the ground and underground water bodies, affecting the quality of the water environment and the safety of water supply. Industrial activities such as electroplating, printing and dyeing, and flue gas washing also produce a large amount of sulfate wastewater with low organic content. [0003] Sulfate is one of the weakly toxic ions, and drinking water contains SO 4 2- It will have a bitter taste, and water with a concentration exceeding 600mg / L will generally have a diarrhea reaction, which will easily cause damage to the digestive tract (WHO, 1996). In addition to th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00
Inventor 张旭徐慧纬李广贺杨姗姗
Owner TSINGHUA UNIV
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