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Processing equipment for separating waste water by superconducting magnet

A wastewater treatment and magnetic separation technology, which is applied in the fields of magnetic field/electric field water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem that magnetic attraction cannot be separated, and achieves no need for frequent maintenance, high efficiency and low cost low effect

Inactive Publication Date: 2010-07-21
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, some people have used superconducting magnetic separation technology to separate and purify magnetic metal impurity particles in wastewater from steel mills, aluminum factories, etc. The separation effect is obvious, but it is still limited to the separation of magnetic metal pollutants in wastewater. For organic and inorganic pollutants in wastewater , since these pollutants are not magnetic themselves, they cannot be separated by the magnetic attraction generated by the magnetic field

Method used

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  • Processing equipment for separating waste water by superconducting magnet
  • Processing equipment for separating waste water by superconducting magnet
  • Processing equipment for separating waste water by superconducting magnet

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the magnetic separation wastewater treatment device of this embodiment includes a magnetic seed and flocculant dispenser 3 , a mixer 4 , a superconducting magnetic separator 7 and a recoverer 10 . The magnetic seed and flocculant feeder 3 is used to feed magnetic seeds and flocculant to the mixer at a certain rate. The mixer 4 is connected with a water inlet pipe for fully mixing the magnetic seeds and flocculant with the wastewater, and the mixer 4 has a stirring blade 5 in it. The water inlet pipe of the mixer 4 can be connected with a water pump 2 for pumping waste water from the waste water pool 1 into the mixer 4 . One end of the magnetic separator is connected to the mixer 4 through a pipeline, and the other end is connected to a water outlet pipe, and the water outlet pipe has a water outlet 13 . The superconducting magnetic separator 7 includes a refrigerator 6, a superconducting magnet 9, and a wastewater treatment pipeline placed i...

Embodiment 2

[0053] The magnetic separation wastewater treatment device of this embodiment is basically the same as that of Embodiment 1, except that a vertical structure (such as figure 2 shown). This embodiment is a vertical structure, which is suitable for the purification treatment of oilfield tertiary oil recovery reinjection water. In a vertical structure, clean sieve plates enter the wastewater treatment pipeline from bottom to top.

[0054] The common feature of Examples 1 and 2 is that the sieve plate is used to absorb pollutants, and the internal resistance of the magnetic separator is small, which is suitable for treating wastewater with a large flow rate and a high content of suspended solids.

[0055] The start-up steps and wastewater treatment process of the magnetic separation wastewater treatment device in this embodiment are consistent with those in Embodiment 1.

[0056] According to the procedure of this embodiment, the purification experiment was carried out three ti...

Embodiment 3

[0058] The magnetic separation wastewater treatment device of this embodiment is as image 3 shown. The magnetic separation wastewater treatment device of this embodiment is basically the same as that of Embodiment 1, except that the magnetic separator of this embodiment uses steel wool instead of a sieve plate for filtration. The steel wool is filled in the wastewater treatment pipeline of the magnetic separator, and the steel wool is twisted and wound by steel wire made of ferritic stainless steel. The wire diameter of the steel wool is 0.05-1 mm. This embodiment may have multiple segments of steel wool, and the distance between two adjacent segments of steel wool is 1 / 3 to 1 / 2 of the length of each segment of steel wool. In this embodiment, the conveying mechanism is used to continuously convey the clean steel wool into the magnetic separator, and continuously remove the steel wool that has absorbed the pollutant flocs from the magnetic separator. The cleaning mechanism ...

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Abstract

The invention provides processing equipment for separating waste water by superconducting magnet, comprising a magnetic seed and flocculating agent feeding machine, a mixer and a superconducting magnetic coolant separator; wherein the magnetic seed and flocculating agent feeding machine is used for feeding magnetic seeds and flocculating agent to the mixer; the mixer is connected with a water pipe and used for fully mixing the magnetic seeds and flocculating agent with the waste water; one end of the superconducting magnetic coolant separator is connected with the mixer by a pipeline and the other end thereof is connected with a water outlet pipe, the superconducting magnetic coolant separator is provided with a filtration device made from ferrite stainless steel material. In the invention, the magnetic seeds are added in advance, so that nonmagnetic harmful substances can be fully combined with the magnetic seeds, thus realizing separation and purification of the waste water by superconducting magnet and being widely applied to process industrial and domestic waste water. Meanwhile, the invention has the advantages of low cost, high efficiency, small power consumption and unattended automatic operation.

Description

technical field [0001] The invention belongs to the field of resource and environment protection, in particular, the invention relates to a superconducting magnetic separation device for wastewater treatment. Background technique [0002] At present, the industrial wastewater treatment methods widely used in China mainly include chemical methods and biochemical methods. Chemical methods mainly include precipitation, filtration, neutralization and decolorization. Biochemical methods mainly include biological contact oxidation-coagulation sedimentation method, biological filter-oxidation ditch and activated sludge method, pure oxygen activated sludge method, oxidation pond method, etc. However, the current practical chemical and biochemical methods have problems such as large investment, high operating cost, long reaction time, large footprint, complex process, low efficiency, and high energy consumption. Especially in paper mill wastewater treatment, these problems are more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/48C02F1/52
Inventor 李来风张浩黄荣进徐向东龚领会徐冬周远
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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