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Extractant for treating trivalent chromium ions in chrome tanning waste liquid, preparation method and extraction method thereof

An extractant and trivalent chromium technology, applied in chemical instruments and methods, extraction water/sewage treatment, animal processing wastewater treatment, etc., can solve the problems of full utilization of environmental pollution resources, etc., and achieve low treatment cost and fast mass transfer rate , the effect that the conditions are easy to control

Active Publication Date: 2018-05-08
昆山循清环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can effectively solve the problems of environmental pollution and full utilization of resources that restrict the sustainable development of the leather industry

Method used

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  • Extractant for treating trivalent chromium ions in chrome tanning waste liquid, preparation method and extraction method thereof
  • Extractant for treating trivalent chromium ions in chrome tanning waste liquid, preparation method and extraction method thereof
  • Extractant for treating trivalent chromium ions in chrome tanning waste liquid, preparation method and extraction method thereof

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Embodiment １

[0034] An extractant for treating trivalent chromium ions in chrome tanning waste liquor, the extractant is a colloidal liquid foam, comprising the following raw materials in parts by weight: 0.08 part of oil-soluble surfactant, 0.08 part of water-soluble surfactant lauryl 0.04 parts of sodium sulfate, 120 parts of extractant P204, 280 parts of kerosene and 40 parts of distilled water.

Embodiment ２

[0036] An extractant for treating trivalent chromium ions in chrome tanning waste liquor, the extractant is a colloidal liquid foam, comprising the following raw materials in parts by weight: oil-soluble surfactant Tween-800.1 part, water-soluble surfactant Tween-8 0.06 parts of sodium alkyl sulfate, 180 parts of extractant P204, 420 parts of kerosene and 60 parts of distilled water.

Embodiment ３

[0038] An extractant for treating trivalent chromium ions in chrome tanning waste liquor, the extractant is a colloidal liquid foam, comprising the following raw materials in parts by weight: 0.09 parts of oil-soluble surfactant Tween-80, ten parts of water-soluble surfactant 0.05 parts of sodium dialkyl sulfate, 150 parts of extractant P204, 350 parts of kerosene and 50 parts of distilled water.

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Abstract

The present invention provides an extractant for treating trivalent chromium ions in a chrome tanning waste liquid, wherein the extractant is a colloidal liquid foam, and comprises the following raw materials by weight: 0.08-0.1 part of an oil-soluble surfactant, 0.04-0.06 part of a water-soluble surfactant, 120-180 parts of an extractant P204, 280-420 parts of kerosene, and 40-60 parts of distilled water. The preparation method comprises: respectively preparing an oil phase solution and a water phase solution; and continuously stirring the water phase solution, and slowly adding the oil phasesolution into the water phase solution in a dropwise manner when a large amount of foams are generated, wherein the adding is gradually accelerated, and the stirring is stopped until the oil phase solution is completely added in the dropwise manner so as to produce the colloidal liquid foam. According to the present invention, the problems of environmental pollution restricting the sustainable development of leather industry and the complete utilization of resources can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of chemical waste liquid treatment, and relates to the treatment of trivalent chromium ions in chrome tanning waste liquid, in particular to an extraction agent for treating trivalent chromium ions in chrome tanning waste liquid, a preparation method and an extraction method thereof. Background technique [0002] So far, a lot of research work has been done on the treatment and recycling of chrome tanning waste at home and abroad, and some treatment methods have been explored to reduce the amount of chrome tanning liquid and the amount of Cr. 3+ discharge of waste liquid to reduce Cr in tannery wastewater 3+ To meet the national industrial wastewater discharge standards, there are mainly the following methods. [0003] (1) Alkaline precipitation method, G.Chirita and A.Chirita from Romania, Hou Jie and Ma Guozhong from China, G.Tibaldi from Germany, R.Hrnjic from Japan, A.Boast from the United States and Qi...

Claims

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Application Information

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IPC IPC(8): C02F1/26C02F103/24C02F101/22
CPCC02F1/26C02F2101/22C02F2103/24
Inventor 吴清宇
Owner 昆山循清环保工程有限公司
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