Wastewater treatment device for chrome plating by coke-scrap iron method

A wastewater treatment and iron filings technology, which is applied in metallurgical wastewater treatment, reduced water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of polluting drinking water and industrial water, endangering agriculture, forestry, animal husbandry and fishery, and affecting industry and agriculture Problems such as normal production, to achieve the effect of ensuring effective precipitation, ensuring continuity, and benefiting environmental protection

Inactive Publication Date: 2008-10-01
WUHAN UNIV OF TECH
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  • Description
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Problems solved by technology

Untreated electroplating wastewater is discharged into rivers, ponds, and seeps into the ground, which will not only endanger agriculture, forestry, animal husbandry, sideline fishing, and affect the normal production of industry and agriculture, but also pollute drinking water and industrial water.

Method used

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  • Wastewater treatment device for chrome plating by coke-scrap iron method
  • Wastewater treatment device for chrome plating by coke-scrap iron method
  • Wastewater treatment device for chrome plating by coke-scrap iron method

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Embodiment Construction

[0032] Below in conjunction with embodiment and Figure 1 to Figure 4 The present invention is further described.

[0033] The coke-iron scrap method chrome-plating waste water treatment equipment provided by the invention comprises following reaction unit and aftertreatment unit:

[0034] Reaction device: mainly composed of a drum 6, a stirrer 10, a medicine tank 11 and a plurality of curved plates 16. The drum 6 is movably supported on the frame 1, and is tilted toward the sedimentation tank; the two ends of the drum are respectively provided with a water inlet 3 and a water outlet 9, and the water inlet 3 is connected with the water source that requires chrome-plating waste water through the water inlet pipe, and the water outlet 9 is facing the first transition storehouse 15 below it. Agitator 10 and medicine tank 11 are located on the sedimentation water tank. A plurality of curved plates 16 are arranged in a tooth shape and fixed on the sides of the neutralization tan...

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Abstract

The invention relates to a treatment equipment of wastewater produced from chromate treatment by using a coke-scrap iron method, wherein, a reaction device is essentially composed of a roller (6) which is placed in an incline way, bent plates (16), and a stirrer (10) and a drug tank (11) arranged on a settling water tank. A plurality of bent plates are arranged at the rims of the two sides of a neutralizing tank (21) in a tooth form; an aftertreatment device is provided with the settling tank, in which a plurality of transitional bins and filtration bins that are arranged crosswise and communicated are arranged, wherein, the neutralizing tank (21) that is communicated with a first transitional bin (15) is arranged in the first transitional bin (15) which is also provided with rough hole and pore foam board filtration devices (13) and double-inclined-tube settlers arranged in different filtration bins. The treatment equipment has novel design. The roller can lead the coke and the scrap iron to make free fall in the roller, thereby avoiding caking of the scrap iron; the economic and suitable double-inclined-tube settlers are used in the filtration bins; a rough hole and pore foam board design is used in the last purifying procedure; therefore, the final water quality requirements are guaranteed. The whole equipment can treat wastewater continuously.

Description

technical field [0001] The invention relates to the field of chromium-plating wastewater treatment, in particular to equipment used for coke-iron scrap treatment of chromium-plating wastewater. Background technique [0002] Chromium plating currently uses chromic anhydride with a high concentration as the plating solution, and chromium-containing wastewater is one of the main sources of wastewater in electroplating. Due to the wide distribution of electroplating factories and the variety of highly toxic substances contained in the wastewater, the harm is extremely great. Untreated electroplating wastewater is discharged into rivers, ponds, and seeps into the ground, which will not only endanger agriculture, forestry, animal husbandry, sideline fishery, and affect the normal production of industry and agriculture, but also pollute drinking water and industrial water. Chromium-containing wastewater belongs to the national first-class wastewater. [0003] Chromium in electrop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/70C02F103/16C02F101/22
Inventor 柯常忠陈昕刘雷王啸崔昊罗雯
Owner WUHAN UNIV OF TECH
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