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Magnetic treatment and vulcanization process cooperative processing device and method for heavy-metal-containing wastewater

A technology of collaborative treatment and magnetic treatment, applied in chemical instruments and methods, magnetic field/electric field water/sewage treatment, water/sewage treatment, etc. Environmental benefits, reduced reaction time, enhanced solubility effects

Active Publication Date: 2018-11-23
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a device for co-processing wastewater containing heavy metals by magnetic treatment and vulcanization, so as to solve the problem that the existing wastewater treatment technology cannot meet the domestic wastewater discharge standards

Method used

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  • Magnetic treatment and vulcanization process cooperative processing device and method for heavy-metal-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Cu in wastewater 2+ , Pb 2+ , Zn 2+ The concentration is 1g / L.

[0036] Step 1. Inject the waste water to be treated into the water tank 6, the magnetization intensity is 0.2T m, the length of the magnet 1 is 0.5m, and the magnetic induction intensity is set to 0.4T;

[0037] Step 2: Turn on the water pump 5, adjust the flow rate of the waste water to 3m / s through the valve 4 by means of the flowmeter 8, the volume of the waste water to be treated is 100L, and the cross-sectional area of ​​the water pipe is 0.1m 2 , the magnetization time is 335s;

[0038] Step 3, turn on the stirring device 3 and the heating device 2, set the rotating speed of the stirring device 3 to 200r / min, set the temperature of the heating device 2 to 40°C, add Na at a concentration of 2.5g / L and a flow rate of 200L / h 2 S, heavy metal ion Cu was measured after 30 min 2+ , Pb 2+ , Zn 2+ The precipitation rates were 86.2%, 84%, and 81%, respectively.

Embodiment 2

[0040] Cu in wastewater 2+ , Pb 2+ , Zn 2+ The concentration is 1.5g / L.

[0041] Step 1. Inject the waste water to be treated into the water tank 6, the magnetization intensity is 0.4T m, the length of the magnet 1 is 0.5 m, and the magnetic induction intensity is set to 0.8T;

[0042] Step 2, turn on the water pump 5, adjust the flow rate of the waste water to 5 m / s through the valve 4 by means of the flow meter 8, the volume of the waste water to be treated is 100L, and the cross-sectional area of ​​the water pipe is 0.1m 2 , the magnetization time is 200s;

[0043] Step 3, turn on the stirring device 3 and the heating device 2, set the rotating speed of the stirring device 3 to 200r / min, set the temperature of the heating device 2 to 70°C, and add Na with a concentration of 2.8g / L and a flow rate of 300L / h 2 S, heavy metal ion Cu was measured by sampling after 40min 2+ , Pb 2+ , Zn 2+ The precipitation rates were 90.3%, 87.8%, and 83.3%, respectively.

Embodiment 3

[0045] Cu in wastewater 2+ , Pb 2+ , Zn 2+ The concentration is 2g / L.

[0046] Step 1. Inject the waste water to be treated into the water tank 6, the magnetization intensity is 0.5T·m, the length of the magnet 1 is 0.5m, and the magnetic induction intensity is set to 1T;

[0047] Step 2: Turn on the water pump 5, adjust the flow rate of the waste water to 6m / s through the valve 4 by means of the flowmeter 8, the volume of the waste water to be treated is 100L, and the cross-sectional area of ​​the water pipe is 0.1m 2 , the magnetization time is 170s;

[0048] Step 3, turn on the stirring device 3 and the heating device 2, set the rotating speed of the stirring device 3 to be 500r / min, use the temperature regulator 3 to set the temperature of the heating device 2 to be 55°C, set the concentration to 4.5g / L, and the flow rate to be 250L / min h added to Na 2 S, heavy metal ion Cu was measured by sampling after 60 min 2+ , Pb 2+ , Zn 2+ The precipitation rates were 96.5%,...

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Abstract

The invention discloses a magnetic treatment and vulcanization process cooperative processing device and method for heavy-metal-containing wastewater, and belongs to the field of wastewater treatment,and solves the problem that the existing wastewater treatment technology cannot meet national wastewater discharge standards. The device comprises a water slot and a heating device, and further comprises a magnet, a water pump, a valve, a flow meter and a water tube, wherein the magnet, the water pump, the valve, the flow meter, the heating device and the water slot are in series connection on the water tube to form a circulating loop. The method comprises the following steps of: injecting to-be-treated wastewater into the water slot, and setting magnetic induction intensity of the magnet; starting the water pump, and regulating flow speed of to-be-treated wastewater, and magnetizing under the condition; starting the stirring device and the heating device, adding a vulcanizing agent, andreacting for 30-60 minutes. The devices has the beneficial effects of improving a reaction rate, reducing overflow of H2S gas in a treatment process, and reduces usage amount of the vulcanizing agent.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a device and method for co-processing wastewater containing heavy metals by magnetic treatment and vulcanization. Background technique [0002] As the types and quantities of pollutants contained in modern industrial wastewater become more and more complex, it is difficult to meet the requirements with a single conventional water treatment agent, and advanced treatment is urgently needed. Especially the situation that the wastewater contains a large amount of heavy metal ions is particularly serious. The discharge of these wastewaters not only poses a threat to aquatic organisms, but may also be continuously enriched through sedimentation, adsorption and food chains, destroying the ecological environment and ultimately threatening human health. [0003] Wastewater treatment technologies are mainly physical, chemical, and biological methods. With the continuous im...

Claims

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Application Information

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IPC IPC(8): C02F1/48C02F1/52C02F101/20
CPCC02F1/481C02F1/5236C02F2101/20
Inventor 姚夏妍余江鸿鲁兴武李彦龙程亮李俞良李守荣张恩玉李贵
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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