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Acid wastewater treatment device utilizing membrane technique

A technology of wastewater treatment and membrane technology, applied in membrane technology, return water treatment, water/sludge/sewage treatment, etc., it can solve the problems of salt concentration and pH limit of hydrophobic microporous membrane sewage, and achieve high-quality and stable effluent quality. The effect of efficient separation and reduction of processing costs

Pending Publication Date: 2017-11-07
中山市创思泰新材料科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is a method of evaporating liquid water in waste acid sewage to obtain concentrated liquid. This method is simple to operate, but the problem of energy consumption caused by high temperature evaporation has always been a problem that many enterprises cannot overcome.
Another example is the hydrophobic microporous membrane used in Chinese patent application No. 201110269978.4, which is limited by the salt concentration and pH of the separated sewage.

Method used

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  • Acid wastewater treatment device utilizing membrane technique
  • Acid wastewater treatment device utilizing membrane technique
  • Acid wastewater treatment device utilizing membrane technique

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like figure 1 , figure 2 , image 3 Shown is embodiment 1 of the present invention, in this embodiment, a kind of acid waste water treatment device that adopts membrane technology, comprises sewage treatment tank 16, is provided with membrane module unit 11 in the sewage treatment tank 16, filters through membrane module unit 11 acid waste water. The membrane module unit 11 includes a pressure-bearing housing 11-6, and a plurality of external-pressure membrane tubes 11-1 are arranged inside the pressure-bearing housing 11-6, and water inlets 11-9 and outlets are respectively provided at both ends of the pressure-bearing housing 11-6. Nozzle 11-10.

[0060] like Figure 4 , Figure 5 As shown, the external pressure membrane tube 11-1 includes a support layer 11-3, and a separation layer 11-2 is arranged on the outside of the support layer 11-3. The separation layer 11-2 adopts a multifunctional graphene / polymer composite water permeable membrane. The pore diameter...

Embodiment 2

[0094] In this embodiment, the difference from Embodiment 1 is that, as Figure 8 As shown, the separation layer 11-2 is wrapped on the support layer 11-3 in a spiral wound structure, and is bonded with epoxy resin or polyurethane at the seam, or welded by heat and pressure, so that the separation layer 11-2 and the support layer 11-3 3 tightly connected together.

[0095] Figure 8 It is only a schematic diagram of the structure. During the winding process of the separation layer 11-2, each turn of the separation layer 11-2 needs to closely connect and transition with the upper and lower turns.

[0096] In the spiral-wound structure, the support layer 11-3 can be wrapped with a narrow separation layer 11-2.

[0097] Other structures of the tubular membrane module in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0098] In addition to providing the above acid wastewater treatment device using membrane technology, the present i...

experiment example 1

[0106] A kind of iron-containing waste hydrochloric acid water with an electrical conductivity (abbreviated as EC value) of about 120ms / cm is selected for concentration and separation treatment. The wastewater has been pretreated to remove particulate impurities and some organic components above 25 μm (microns); the chlorine ion content of the sewage is 1.51×10 4 mg / L, the pH value of raw water is less than 1, and the iron ion content is 2.14×10 3 mg / L.

[0107] In order to study the influence of different sewage treatment temperatures on the effluent water quality, the sewage temperature of the sewage treatment tank 16 was respectively set at 50°C, 60°C and 70°C to conduct a membrane module sewage concentration and separation experiment. The parameters of other parts of the acid wastewater treatment device are kept the same, that is, the condensed water temperature of the condensing device 13 is set at 18°C, and the vacuum degree of the negative pressure system 14 is kept at...

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Abstract

The invention discloses an acid wastewater treatment device utilizing a membrane technique. According to the acid wastewater treatment device, the technical problem that acid wastewater cannot be treated by virtue of a membrane material in the prior art is solved. The acid wastewater treatment device comprises a sewage treatment tank, wherein a membrane assembly unit is arranged in the sewage treatment tank, is used for filtering acid wastewater and comprises a pressure-bearing shell, a plurality of external pressure type membrane tubes are arranged in the pressure-bearing shell, a water inlet and a water outlet are respectively formed in two ends of the pressure-bearing shell, the external pressure type membrane tubes comprise support layers, and separation layers are arranged outside the support layers and are produced from multifunctional graphene / high molecular composite materials. According to the acid wastewater treatment device, the graphene / nanostructure multifunctional high molecular material separation layers adopted by the external pressure type membrane tubes have very strong corrosion resistance, acid-alkali resistance and mildew resistance and can be used for treating various acid wastewaters.

Description

technical field [0001] The invention relates to a wastewater treatment device, in particular to an acid wastewater treatment device using membrane technology, which can be used to treat sulfuric acid wastewater and the like. Background technique [0002] The problem of development and environmental protection is the most prominent contradiction since entering the 21st century, and among the environmental protection problems, water pollution is particularly prominent. Solving the problem of sewage and waste water has attracted widespread attention from all over the world. Some foreign experts have included the development of membrane technology in the "third industrial revolution", while Germany regards membrane technology as an innovative technology in the 21st century for application research and development, and vigorously promotes its application in the field of environmental protection. Especially in the application research of water treatment, because of its excellent e...

Claims

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Application Information

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IPC IPC(8): B01D63/06C02F1/44
CPCB01D63/065C02F1/44C02F2301/04
Inventor 曹丽薇郭剑锋
Owner 中山市创思泰新材料科技股份有限公司
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