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Inclined plate electroplate device for removing heavy metal from wastewater and manufacturing method of filter board

A technology for electroplating wastewater and production method, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. , low energy consumption, the effect of solving the way out problem

Inactive Publication Date: 2013-01-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Biological treatment has the advantages of low cost, simple process control, convenience and practicality, but it is difficult to treat large-flow wastewater containing low-concentration heavy metals; chemical treatment has the advantages of low investment and easy operation, but it occupies a large area and requires additional Chemical material

Method used

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  • Inclined plate electroplate device for removing heavy metal from wastewater and manufacturing method of filter board
  • Inclined plate electroplate device for removing heavy metal from wastewater and manufacturing method of filter board
  • Inclined plate electroplate device for removing heavy metal from wastewater and manufacturing method of filter board

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Experimental program
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Effect test

Embodiment 1

[0034] A slant plate type electroplating wastewater heavy metal removal device, the structure is as follows figure 1 As shown, it includes a water distribution device, an inclined plate reaction device 6 , a flushing device 10 , an effluent collecting device 13 and a sediment collecting device 7 . The water distribution device is mainly composed of a water collection pool 1 and a water distribution pool 3. A peristaltic pump 2 with a flowmeter is provided on the pipeline between the water collection pool 1 and the water distribution pool 3. Between the water distribution pool 3 and the inclined plate reaction device 6 The room is separated by a water distribution plate 4; the main body of the inclined plate reaction device 6 is a box reactor with an open upper part, and there are three groups of filter plates 9 placed obliquely in the reactor, and the adjacent two groups of filter plates are perpendicular to each other, so The upper right of the inclined plate reaction device ...

Embodiment 2

[0039]Embodiment 2: The structure of the inclined plate type electroplating wastewater heavy metal removal device is as described in Embodiment 1, the difference is that the production method of the red mud coal powder filter plate is as follows:

[0040] Weigh 78 parts of red mud, 12 parts of coal powder, 3 parts of expansion agent aluminum powder and 7 parts of water to make a slurry; take 5.5g of the slurry and apply it evenly on the wire mesh mud hanger with a brush, and dry it A raw mud filter plate is obtained; the raw mud filter plate is fired in a muffle furnace; the firing temperature is 310° C., and the firing time is 25 minutes. The filter plate has a removal rate of more than 95% for copper-containing electroplating wastewater.

Embodiment 3

[0041] Embodiment 3: The structure of the inclined plate type electroplating wastewater heavy metal removal device is as described in Embodiment 1, the difference is that the production method of the red mud coal powder filter plate is as follows:

[0042] Weigh 73 parts of red mud, 15 parts of coal powder, 2 parts of expansion agent aluminum powder and 10 parts of water to make a slurry; take 8.0g of the slurry and apply it evenly on the wire mesh mud hanger with a brush, and dry it to make a slurry. A raw mud filter plate was obtained; the raw mud filter plate was fired in a muffle furnace at a firing temperature of 350° C. and a firing time of 20 minutes. The filter plate has a removal rate of more than 99% for zinc-containing electroplating wastewater.

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Abstract

An inclined plate electroplate device for removing heavy metal from wastewater and a manufacturing method of a filter board. The device provided by the invention comprises a water distributing device, an inclined plate reaction device, a flushing device, an effluent gathering device and a sediment gathering device, the main body of the incline plate reaction device is a box-type reactor with the upper portion openmouthed and three filter boards are obliquely disposed inside the reactor; an overflow groove on one side of the upper portion of the reactor is connected with the effluent gatheringdevice; and the bottom of the reactor is provided with the sediment gathering device. The filter board is prepared by steps of: mixing red mud, coal dust, an expanding agent and water, coating the mixture on a netted mud hanging device woven by iron wires, drying and sintering. Wastewater containing toxic heavy metal fully contacts with the filter boards in the device provided by the invention soas to make the heavy metal to react with the filter boards; red mud adsorbed with the heavy metal on the surface layer of the filter boards gathers in the sediment gathering device of the reactor andis together removed. The device provided by the invention is convenient to operate, occupies little space, and can be use to recover the heavy metal in wastewater and solve the reutilization problem of red mud.

Description

technical field [0001] The invention relates to a slant plate type heavy metal removal device and a manufacturing method of a filter plate, belonging to the field of sewage treatment, in particular to the field of electroplating wastewater treatment. Background technique [0002] After the 1950s, the global population grew rapidly and industry developed rapidly. The situation of global water resources is rapidly deteriorating, and the "water crisis" is becoming more and more serious. At present, the annual discharge of electroplating wastewater in my country has reached 4 billion m 3 , the heavy metals it contains not only pose a threat to environmental protection and species diversity, but also seriously affect human physical and mental health. Lead in sewage can cause poisoning of fish and aquatic organisms; if it enters the human body and accumulates, it will cause headaches, memory loss, amnesia and other symptoms. Excessive copper can cause dermatitis and eczema, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
Inventor 岳钦艳王小娟高悦叶新强齐元峰高宝玉祁振
Owner SHANDONG UNIV
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