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System and method for treating waste pickling liquor and sludge in wire rope factories

A technology for pickling waste liquid and steel wire rope, applied in the field of environmental treatment, can solve the problems of secondary pollution and high treatment costs, and achieve the effects of preventing leakage, ensuring safety, and achieving reduction in quantity.

Pending Publication Date: 2017-10-10
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the method for treating waste acid and sludge in the prior art is difficult to be applied on a large scale, the treatment cost is high, and it is easy to cause secondary pollution, the present invention provides a system for treating waste pickling liquid and sludge in a steel wire rope factory And method, the present invention is aimed at industrial production, forms a complete set of working system, can realize the co-disposal of steel wire rope pickling waste acid and sludge, can effectively remove zinc, lead element, prepare the industrial product polyferric chloride with higher added value flocculant, and meet the requirements of industrial waste reduction

Method used

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  • System and method for treating waste pickling liquor and sludge in wire rope factories
  • System and method for treating waste pickling liquor and sludge in wire rope factories

Examples

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Effect test

Embodiment 1

[0038] like figure 1 , figure 2 As shown, a system for treating pickling waste liquid and sludge in a steel wire rope factory can reduce sulfide sediment leaching devices without requiring sludge production and reducing equipment operation processes. The system includes acid mud mixing device 1, vacuum filtration device 4, lead-zinc waste liquid sodium sulfide treatment device 5, ferric chloride flocculant storage device 6, polyferric chloride flocculant preparation device 8, industrial centrifuge 9, vulcanization reaction Treatment effect safety device 10, the acid mud mixing device 1, vacuum filtration device 4, lead-zinc waste liquid sodium sulfide treatment device 5, industrial centrifuge 9, sulfidation reaction treatment effect safety device 10, polyferric chloride flocculant The preparation device 8 and the polyferric chloride flocculant storage device 6 are sequentially connected through pipelines, and a reflux device is provided between the lead-zinc waste liquid sod...

Embodiment 2

[0061] like figure 1 , 2 As shown, the sulfide precipitate separated from the industrial centrifuge still contains a large amount of ferrous ions. When the maximum efficiency of ferrous ions is required to prepare polyferric chloride flocculant and sludge reduction is required, it is necessary to increase Sulfide sediment leaching device 7 utilizes the dilute hydrochloric acid solution of pH=1 to effectively leach ferrous ions and lead-zinc ions co-precipitated with lead-zinc, thereby reducing the content of ferrous ions and lead-zinc ions in the sludge and achieving heavy purpose. Continue to detect the concentration of lead and zinc in the leaching solution. When the concentration of lead and zinc in the leaching solution reaches the requirements of HG / T 4672-2014 "Water Treatment Agent Polyferric Chloride", when Pb<20ppm and Zn<1000ppm, use special pumps to pump to polychloride In the iron flocculant preparation device, the polyferric chloride flocculant is prepared. If ...

Embodiment 3

[0074] like figure 1 , figure 2 As shown, in the case of requiring the reduction of sludge production, the sulfidation sediment leaching device should be added.

[0075] A system for treating pickling waste liquid and sludge in a steel wire rope factory, including an acid mud mixing device 1, a vacuum filtration device 4, a lead-zinc waste liquid sodium sulfide treatment device 5, a ferric chloride flocculant storage device 6, and a sulfurized sediment Leaching device 7, polyferric chloride flocculant preparation device 8, industrial centrifuge 9, vulcanization reaction treatment effect safety device 10, the acid mud mixing device 1, vacuum filtration device 4, lead-zinc waste liquid sodium sulfide treatment device 5. Industrial centrifuge 9, vulcanization reaction treatment effect safety device 10, polyferric chloride flocculant preparation device 8, polyferric chloride flocculant storage device 6 are sequentially connected through pipelines, the lead-zinc waste liquid sodi...

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Abstract

The invention discloses a system and a method for treating waste pickling liquor and sludge in wire rope factories, which belong to the field of environmental governance. The system for treating waste pickling liquor and sludge in wire rope factories disclosed by the invention comprises an acid-sludge mixing unit, a hydrogen sulfide warning unit, a hydrogen sulfide absorption unit, a vacuum filtration unit, a lead-zinc waste liquor sodium sulfide treatment unit, a polyferric chloride flocculant storage unit, a polyferric chloride flocculant preparation unit, an industrial centrifuge, and a vulcanization reaction treatment effect safety unit. The method for treating waste pickling liquor and sludge in wire rope factories disclosed by the invention includes acid-sludge mixing, solid-liquid separation, vulcanization reaction, and oxidation reaction. The invention can realize the co-disposal of pickling liquor and sludge of wire ropes, can effectively remove zinc and lead elements, and can prepare industrial polyferric chloride flocculant product with high added value.

Description

technical field [0001] The invention belongs to the field of environmental management, and more specifically relates to a system and method for treating pickling waste liquid and sludge in a steel wire rope factory. Background technique [0002] With the development of social economy, steel wire rope, as a material with high tensile strength, fatigue strength and impact toughness, is widely used in lifting equipment, elevator ropes and so on. The iron oxide layer formed on the surface during the production process needs to be removed by pickling. At present, domestic steel wire rope enterprises mainly use hydrochloric acid pickling. When the concentration of hydrochloric acid solution drops below 10%, the pickling effect will drop significantly, and it needs to be discarded when it fails to meet the use requirements. Steel wire rope pickling waste acid has strong acidity (pH<0) and contains a large amount of toxic and harmful heavy metal elements (lead, zinc, etc.). was...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F1/52C02F11/00C01F7/56
CPCC01F7/56C02F1/5236C02F9/00C02F11/00C02F1/001C02F1/38
Inventor 张毅敏徐斌孟瑞华彭福全孔明巫丹朱月明
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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