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A comprehensive treatment method for lithium-based rubber synthesis wastewater

A comprehensive treatment and rubber technology is applied in the field of comprehensive treatment of lithium-based rubber synthetic wastewater, which can solve problems such as poor economic benefits, inability to achieve energy saving and emission reduction, and inability to effectively purify wastewater pollutants.

Active Publication Date: 2020-10-27
SINOPEC BALING PETROCHEMICAL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the high-temperature and low-concentration lithium-containing wastewater produced in the rubber synthesis process, the above-mentioned existing treatment processes cannot effectively recover lithium in the wastewater, and cannot realize the resource utilization of lithium-based rubber synthesis wastewater, with poor economic benefits and ineffective Purify other pollutants in wastewater, unable to achieve the purpose of energy saving and emission reduction

Method used

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  • A comprehensive treatment method for lithium-based rubber synthesis wastewater

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Embodiment 1

[0031] A comprehensive treatment method for lithium-based rubber synthesis wastewater, which adopts the method of first absorbing organic matter and then absorbing lithium. The process flow chart is as follows figure 1 shown, including the following steps:

[0032] In this example, the lithium-based rubber synthesis wastewater is a large amount of high-temperature, low-lithium-concentration lithium-containing mixed wastewater produced in the coagulation process of a petrochemical industry rubber factory SBS, SIS and other production workshops. The main features of the lithium-based rubber synthesis wastewater are: a mixed solution of agglomeration wastewater of various rubbers, with white turbidity and many white rubber floating particles. At the same time, the concentration of lithium in the lithium-based rubber synthesis wastewater is 15.8 mg / L, the COD concentration is 414 mg / L, and the temperature of the lithium-based rubber synthesis wastewater is 75°C and the pH value is...

Embodiment 2

[0041] A comprehensive treatment method for lithium-based rubber synthesis wastewater, which adopts the method of first absorbing organic matter and then absorbing lithium. The process flow chart is as follows figure 1 shown, including the following steps:

[0042] In this example, the lithium-based rubber synthesis wastewater is a large amount of high-temperature, low-lithium-concentration lithium-containing mixed wastewater generated in the coagulation process of the SBS production workshop of a rubber factory in a petrochemical industry. The main characteristics of the lithium-based rubber synthesis wastewater: white turbidity, containing more white rubber floating particles. At the same time, the concentration of lithium in the lithium-based rubber synthesis wastewater was 32.2 mg / L, the COD concentration was 181 mg / L, and the temperature of the lithium-based rubber synthesis wastewater was 66°C and the pH value was 10.5.

[0043] (1) Remove most of the scum (such as rubb...

Embodiment 3

[0073] A comprehensive treatment method for lithium-based rubber synthesis wastewater, which is basically the same as in Example 2, except that the adsorption resin used to adsorb organic matter in Example 3 is a polystyrene resin without ion functional groups.

[0074] The results show that: after pretreatment, the COD concentration in the COD-removed liquid that adsorbs organic matter first drops to 35.7mg / L; and then in the lithium-removed liquid that absorbs lithium, the lithium adsorption rate is 98.0%.

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Abstract

The invention discloses a comprehensive treatment method for lithium-based rubber synthetic wastewater, which comprises the following steps: removing scum in lithium-based rubber synthetic wastewater; filtering the effluent to obtain filtered liquid; and adopting an adsorption resin to absorb the scum in the filtered liquid Organic matter and lithium, and complete the comprehensive treatment of lithium-based rubber synthesis wastewater. The method of the present invention can not only effectively recycle the lithium in the wastewater, but also effectively purify the organic pollutants in the wastewater by sequentially performing descum removal, filtration, adsorption of organic matter, adsorption of lithium and other treatments on the lithium-based rubber synthetic wastewater, thereby realizing the treatment of lithium It is a comprehensive treatment of rubber synthetic wastewater, which has the advantages of simple process, low treatment cost (the cost is as low as 1.5 yuan / ton), high lithium recovery rate, good purification effect, green and environmental protection, etc., and can realize the resource utilization of lithium rubber synthetic wastewater The purpose of reuse and energy saving and emission reduction has high use value and good application prospect.

Description

technical field [0001] The invention belongs to the technical field of treatment and recycling of lithium-based rubber synthetic wastewater in the petrochemical industry, and relates to a comprehensive treatment method for lithium-based rubber synthetic wastewater. Background technique [0002] When synthesizing lithium-based rubber, metal lithium or lithium compounds are needed as initiators, such as solution polystyrene-butadiene rubber (S-SBR), low-cis polybutadiene rubber (PB), block styrene-butadiene thermoplastic elastomer (SBS ), styrene / isoprene / styrene triblock copolymer (SIS), etc. In the production process, after the product is polymerized, a large amount of high-temperature, low-concentration lithium-containing wastewater will be produced during subsequent processes such as coagulation and cleaning, which is lithium-based rubber synthesis wastewater. [0003] At present, there is no research report on the treatment of lithium-based rubber synthesis wastewater. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F101/10C02F101/30C02F103/38
CPCC02F1/001C02F1/40C02F1/42C02F9/00C02F2101/10C02F2101/30C02F2103/38C02F2209/08C02F2301/08C02F2303/16
Inventor 夏栋蒋晓云刘雅倩
Owner SINOPEC BALING PETROCHEMICAL CO LTD