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Pretreatment method of waste water from production of rubber additives

A technology of pretreatment and wastewater, applied in natural water treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low recovery rate of activated carbon, difficult treatment, and high treatment cost, and achieve a Conducive to energy saving and environmental protection, simple pretreatment method and obvious environmental benefits

Active Publication Date: 2019-01-01
BEIJING HUIYU LEBANG ENVIRONMENT PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main equipment used in this method is still, steam injection compressor and preheater, which consume a lot of energy and are highly corrosive. At the same time, there are difficult-to-volatile and high-boiling organic compounds in the distillate and still liquid, which are difficult to handle and easily cause secondary pollution. secondary pollution
In addition, in the prior art, there is also an adsorption method to treat wastewater from the production of rubber additives, for example, activated carbon and other substances are used as adsorbents. This method has the problems of high treatment cost and low recycling rate of activated carbon, and is not suitable for industrial applications.

Method used

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  • Pretreatment method of waste water from production of rubber additives
  • Pretreatment method of waste water from production of rubber additives
  • Pretreatment method of waste water from production of rubber additives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Using liquid membrane separation technology to pretreat M wastewater, including the following steps:

[0058] Take surfactant L-113A 30L, additive liquid paraffin 60L and film solvent aviation kerosene 910L to form an oil phase, put it into an emulsifier, turn on the emulsifier, add 500L of sulfuric acid solution with a mass fraction of 10%, and shear at high speed for 10 minutes. That is, a milky white water-in-oil emulsion is obtained. Take 200L of the emulsion and disperse it in 3000L of M wastewater, control the rotation speed at 150 rpm, stir and extract for 15 minutes, let it stand for stratification, and after the lower water phase is clarified, the water phase enters the biochemical treatment device; 205L of the extraction phase enters the electrostatic demulsification After 60 minutes of demulsification, the oil phase 130L was separated and reused for milk making; the water phase (recovery phase) 75L, which contained 12% aniline salt, could be reused in the pro...

Embodiment 2

[0061] Pretreatment of DM wastewater by complex extraction technology includes the following steps:

[0062] Take 30L of N23530L and 70L of aviation kerosene to make a complex extraction agent, take 20L and disperse it into 520L of DM wastewater with pH=3, control the rotation speed at 150rpm, stir and extract for 30min, let it stand for stratification, and separate the oil-water two-phase after the lower water phase is clarified , to obtain 21 L of loaded oil phase, add 3 L of 15% sodium hydroxide solution, extract for 30 minutes, stand for stratification, separate 19.5 L of oil phase and 4.5 L of water phase, and reuse the oil phase for the treatment of DM wastewater.

[0063] After testing the treated wastewater, the COD was 1063mg / L, and the COD removal rate was 53.4%; the B / C value increased from 0.15 to 5.

Embodiment 3

[0065] Using liquid membrane separation technology to pretreat CBS wastewater includes the following steps:

[0066] Take surfactant L-113A 30L, additive liquid paraffin 60L and film solvent aviation kerosene 910L to form an oil phase, put it into an emulsifier, turn on the emulsifier, add 500L of sulfuric acid solution with a mass fraction of 10%, and shear at high speed for 10 minutes. That is, a milky white water-in-oil emulsion is obtained. Take 600L of the emulsion and disperse it in 3000L of CBS wastewater with adjusted pH value, control the rotation speed at 150 rpm, stir and extract for 15 minutes, let it stand for stratification, and after the lower water phase is clarified, the water phase enters the biochemical treatment device; the extraction phase After 205L enters the electrostatic demulsifier for demulsification for 60 minutes, 400L of the oil phase is separated and reused for milk making; 75L of the water phase (recovery phase), which contains 6% cyclohexylamin...

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Abstract

The invention discloses a pretreatment method of rubber ingredient production wastewater. The rubber ingredient production wastewater is M wastewater, DM wastewater and CBS wastewater. A liquid film separation technique is utilized to pretreat the M wastewater, a complex extraction technique is utilized to pretreat the DM wastewater, and a liquid film separation technique is utilized to pretreat the CBS wastewater. The invention provides the treatment technique of every type of production wastewater in the field of rubber ingredient production wastewater for the first time. The method is simple, has the advantages of high treatment efficiency and stable operation, is beneficial to energy saving and environment friendliness, and has obvious environmental benefits.

Description

technical field [0001] The invention relates to the field of wastewater treatment. More specifically, it relates to a method for pretreatment of wastewater produced by rubber additives. Background technique [0002] There are many types of rubber additives, especially rubber accelerators. There are many small-tonnage varieties, resulting in different components of production wastewater formed by the production of different rubber accelerators. [0003] In the prior art, in order to improve the treatment efficiency, the production wastewater of various rubber additives is usually mixed together, and then the wastewater is treated uniformly on the mixture. However, a single wastewater treatment method cannot achieve the desired effect. In the prior art, physical methods, chemical methods, biochemical methods, etc. are combined for comprehensive implementation in order to achieve better results. [0004] In the production of several commonly used rubber additives, such as ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/12C02F103/36
Inventor 程迪欧云川杨宏伟
Owner BEIJING HUIYU LEBANG ENVIRONMENT PROTECTION TECH CO LTD