Oil removal process for cobalt sulfate extraction waste liquid

A technology of cobalt sulfate and waste liquid, which is applied in metallurgical wastewater treatment, grease/oily substance/suspton removal devices, special treatment targets, etc. It can solve the problems of easy pollution of water bodies and failure to achieve adsorption, so as to achieve difficult desorption and improve The effect of adsorption capacity and convenient recycling

Pending Publication Date: 2021-11-09
科立鑫(珠海)新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) The use of ordinary adsorbent resins cannot achieve good adsorption of oil in wastewater;
[0005] (2) After the wastewater absorbs part of the oil, it also contains a large amount of heavy metals, and direct discharge is easy to pollute the water body

Method used

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  • Oil removal process for cobalt sulfate extraction waste liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The modified flocculant is prepared by the following steps:

[0033] S1: Control the dosage ratio of sodium alginate, absolute ethanol, ethylene glycol, and calcium chloride to 4.56g: 60mL: 4mL: 5.0g, add sodium alginate to the absolute ethanol solution, stir with a magnetic stirrer, Control the rotation speed to 1000r / min, stir for 30min, then add sodium periodate into the water solution, control the sodium periodate: distilled water dosage ratio in the sodium periodate aqueous solution to be 2.35g: 50mL, react at room temperature for 3h, obtained Oxidized sodium alginate, then continue to add ethylene glycol and calcium chloride, filter out, wash twice with 75% ethanol, put the washed sodium alginate into distilled water, continue to stir for 10 minutes until it is completely dissolved, and obtain a mixed Liquid A;

[0034] S2: Control the dosage ratio of triethylenetetramine and sodium borohydride to 3.89g:0.45g, raise the temperature of the triethylenetetramine sol...

Embodiment 2

[0038] The modified flocculant is prepared by the following steps:

[0039] S1: Control the dosage ratio of sodium alginate, absolute ethanol, ethylene glycol, and calcium chloride to 4.56g: 60mL: 4mL: 5.0g, add sodium alginate to the absolute ethanol solution, stir with a magnetic stirrer, Control the rotation speed to 1100r / min, stir for 30min, then add sodium periodate into the water solution, control the sodium periodate: distilled water dosage ratio in the sodium periodate aqueous solution to be 2.35g: 50mL, react at room temperature for 4h, obtained Oxidized sodium alginate, then continue to add ethylene glycol and calcium chloride, filter out, wash twice with 75% ethanol, put the washed sodium alginate into distilled water, continue to stir for 15 minutes until it is completely dissolved, and obtain a mixed Liquid A;

[0040] S2: Control the dosage ratio of triethylenetetramine and sodium borohydride to 3.89g:0.45g, raise the temperature of the triethylenetetramine sol...

Embodiment 3

[0044] The modified flocculant is prepared by the following steps:

[0045] S1: Control the dosage ratio of sodium alginate, absolute ethanol, ethylene glycol, and calcium chloride to 4.56g: 60mL: 4mL: 5.0g, add sodium alginate to the absolute ethanol solution, stir with a magnetic stirrer, Control the rotation speed to 1200r / min, stir for 30min, then add sodium periodate into the water solution, control the sodium periodate in the sodium periodate aqueous solution: the ratio of distilled water is 2.35g: 50mL, react at room temperature for 5h, obtained Oxidized sodium alginate, then continue to add ethylene glycol and calcium chloride, filter out, wash twice with 75% ethanol, put the washed sodium alginate into distilled water, continue to stir for 20 minutes until it is completely dissolved, and obtain a mixed Liquid A;

[0046] S2: Control the dosage ratio of triethylenetetramine and sodium borohydride to 3.89g:0.45g, raise the temperature of the triethylenetetramine soluti...

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PUM

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Abstract

The invention relates to an oil removal process for cobalt sulfate extraction waste liquid, and belongs to the technical field of waste liquid treating, DA201-A resin is used for effectively adsorbing oil in waste water, after the DA201-A resin is saturated in adsorption, the oil is decomposed and adsorbed in a steam blowing mode, and the oil is recycled in a condensation mode, so that waste of oil resources is avoided, And dilute alkali is added to regenerate the activity of the DA201-A resin so as to realize the reuse of the DA201-A resin, an unrecyclable oil component C is introduced into a biochemical tank to obtain a waste liquid B, a modified flocculantis added into the waste liquid B, filtering is performed to obtain recyclable wastewater and wastewater containing flocculate, and the waste of resources can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of waste liquid treatment and relates to a cobalt sulfate extraction waste liquid degreasing process. Background technique [0002] Cobalt is an important strategic metal widely used in aerospace, electrical appliances, machinery, chemical industry, ceramics and batteries and other fields. Battery-grade cobalt sulfate can be used to prepare cobalt salts such as cobalt carbonate, cobalt oxalate, and cobalt hydroxide. Cobalt metal can also be prepared by electrowinning. Spherical cobalt oxide prepared by calcination reduction method can be used to prepare lithium cobaltate cathode materials. Battery-grade cobalt sulfate solution can co-precipitate with Ni, Mn, Al and other salt solutions to form binary and ternary hydroxides, which are important raw materials for preparing lithium-ion battery cathode materials. [0003] In the prior art, the following problems exist in the waste water of the nickel-cobalt hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/16
CPCC02F9/00C02F1/40C02F1/285C02F3/00C02F1/62C02F1/001C02F2103/16C02F2303/16
Inventor 林庆绪陈深培
Owner 科立鑫(珠海)新能源有限公司
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