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A kind of tannery process that recycles waste liquid for neutralization

A waste liquid and process technology, applied in application, leather impregnation, small raw hide/large hide/leather/fur treatment, etc., can solve the problems of environmental pollution, resource waste ecology, environmental pollution, etc.

Active Publication Date: 2015-10-14
张壮斗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Today, China has become a world-recognized leather producing country, but the rapid development of the leather industry has also caused serious environmental pollution, waste of resources and ecological damage
The neutral salt in the neutralization waste liquid pollutes the environment and is difficult to treat. If the neutralization waste liquid is discharged randomly, it will not only cause great pollution to the environment, but also cause a great waste of resources
[0003] At present, domestic and foreign methods for treating neutralized waste liquid containing neutral salts mainly include: chemical reduction method, electrolysis method, membrane separation method, adsorption method, ion exchange method, biological method, etc., but the operation process is often expensive. , low efficiency and poor effect cannot achieve the real purpose of pollution control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0010] The process is: 200% neutralized waste liquid, temperature adjusted to 35°C, 2.0% neutralized tannin, 1.5% sodium formate, rotating drum for 20 minutes, 1.2% baking soda, 3.0% fatliquor, rotating for 60 minutes. Requirements: cut through the heart.

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Abstract

The invention provides a tanning process capable of conducting neutralization by recycling waste liquid infinite, which is characterized in that use quantity of neutralizing materials is greatly reduced, the problem of pollution environment caused by waste liquid neutral salt neutralization is solved, water resource is saved, and the neutralizing effect is better than that in a conventional process.

Description

technical field [0001] The invention belongs to the green recycling process of making full use of raw materials and reducing pollution discharge in the technical field of leather production, and a tanning process of neutralizing waste liquid recycled indefinitely is introduced here. Background technique [0002] Today, China has become a world-recognized leather producing country, but the rapid development of the leather industry has also caused serious environmental pollution, waste of resources and ecological damage. The neutral salt in the neutralization waste liquid pollutes the environment and is difficult to treat. If the neutralization waste liquid is discharged arbitrarily, it will not only cause great pollution to the environment, but also cause a great waste of resources. [0003] At present, the domestic and foreign methods for treating the neutralization waste liquid containing neutral salt mainly include: chemical reduction method, electrolysis method, membrane ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C14C1/00
Inventor 张壮斗
Owner 张壮斗
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