Tanning technology for treatment and reuse of waste chrome liquor of bate without discharge and its treatment device

A technology of waste chromium solution and zero discharge, which is applied in the field of gray lye waste chromium solution treatment device, and can solve problems such as environmental hazards, waste of water resources, waste of resources, etc.

Inactive Publication Date: 2005-08-17
HAINING SENDE LEATHER
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  • Abstract
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Problems solved by technology

From the perspective of resource utilization, the discharge of a large amount of sewage is a great waste of water resources; the dis

Method used

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  • Tanning technology for treatment and reuse of waste chrome liquor of bate without discharge and its treatment device
  • Tanning technology for treatment and reuse of waste chrome liquor of bate without discharge and its treatment device
  • Tanning technology for treatment and reuse of waste chrome liquor of bate without discharge and its treatment device

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Embodiment Construction

[0029] Such as figure 1 As shown, after the raw hide is pre-soaked, oil-scraped, and main soaked in water, it is dehaired by the hair-preserving method and then limed, and the ash lye produced in the dehairing and liming steps is treated and reused in the dehairing and liming steps; Afterwards, skinning, deliming, softening, water washing, pickling and tanning are carried out to obtain wet blue leather; the waste chromium liquid generated in the tanning step is treated and reused in the tanning step.

[0030] Ash lye treatment is done through ash lye treatment device. Such as figure 2 and Figure 4As shown, the ash lye treatment device includes a regulating tank 1, a pump 2, a hair filter 7, a hair removal machine 3, a suspension and sedimentation tank 4, an ash lye recovery tank 5, a sludge tank 6, and a stirring system 8; 2 is set between the adjustment tank 1 and the filter machine 7; the hair removal machine 3 is set on the top of the liquid inlet tank 13 of the suspen...

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Abstract

The present invention provides one kind of tanning technology treating lixivium and waste chrome tannage liquid to realize zero exhaustion. The tanning process includes water soaking, scraping oil, depilation, liming, softening, water washing, pickling, tanning, treating lixivium, treating waste chrome tannage liquid and other steps. The lixivium treatment includes regulation, fishing hair, filtering, suspending and depositing, and modification; and the waste chrome tannage liquid treatment includes fishing hair, aeration and regulating, suspending and depositing, filtering, and modification. The present invention also provides the treating apparatus for treating lixivium and treating waste chrome tannage liquid. The present invention can save water resource and chemical material and lower production cost.

Description

technical field [0001] The invention belongs to a clean production technology and a corresponding device in the tanning industry, and in particular relates to a tanning technology and a treatment device for ash lye and waste chrome solution which can realize zero discharge of ash lye waste chrome solution treatment and reuse. Background technique [0002] Tannery sewage is one of the main pollutions produced by tannery enterprises. The amount of tannery sewage is large, and the content of toxic and harmful substances such as chromium and sulfide is relatively high. According to the requirements of the environmental protection department, the tannery sewage must be discharged up to the standard. At present, most tanning enterprises have established sewage treatment systems. Due to the centralized treatment, the effect is not ideal, but the treatment cost is very high. Especially in some tanning enterprises in economically underdeveloped areas, the cons...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/66C02F7/00C02F9/04
CPCY02W10/10
Inventor 朱张金周小松施小斌宋洪斌朱建强
Owner HAINING SENDE LEATHER
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