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A kind of treatment method and device of fluorine-containing high-salt organic wastewater

A treatment device and organic wastewater technology, applied in energy wastewater treatment, mechanical oscillation water/sewage treatment, water/sewage treatment, etc., can solve the problems of unsuitable high-salt organic wastewater, low salt content of treated wastewater, and affecting microbial activity, etc. , to achieve the effect of being conducive to long-term stable operation, increasing the vaporization rate, and promoting solvent vaporization

Active Publication Date: 2022-07-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the salt content of wastewater treated by this method is low, and it is not suitable for the treatment of high-salt organic wastewater. The high-salt environment will affect the activity of microorganisms, and even cause the death of bacteria.

Method used

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  • A kind of treatment method and device of fluorine-containing high-salt organic wastewater
  • A kind of treatment method and device of fluorine-containing high-salt organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] with attached figure 1 The device treats fluorine-containing high-salt organic wastewater. The liquid distributor is a tube-type liquid distributor, the packing is a corrugated metal wire mesh packing, and the field effect is a magnetic field. The number of backpack vaporizers is 3.

[0034] In the fluorine-containing high-salt organic wastewater, the TDS is 72400 mg / L, the COD is 22400 mg / L, the sodium fluoride is 30300 mg / L, and the pH value of the wastewater is 6.5.

[0035] The specific processing process is as follows:

[0036] (1) The wastewater is dispersed by the pipe-type liquid distributor and then enters the process intensification zone. Under the action of packing and magnetic field, the wastewater is intensively treated. The treatment temperature is 45 °C to reduce the latent heat of solvent vaporization.

[0037] (2) After treatment in the process intensification zone, the wastewater enters the vaporization zone of the main reactor, and the treatment te...

Embodiment 2～6

[0042] The quality of the wastewater is the same as in Example 1. The difference is that the wastewater indicators are different and the main process parameters are different. Specific wastewater indicators, main process parameters and indicators of treated effluent are shown in Table 1.

[0043] Table 1 Wastewater treatment results

[0044]

Embodiment 7

[0046] The composition of wastewater quality is the same as that in Example 1. The difference: the field effect uses ultrasound. After the wastewater is treated, the TDS in the effluent is 880mg / L, and the desalination rate is 98.79%; the COD is 950mg / L, and the organic matter removal rate is 95.76%. After 6 months of operation of the reactor, there is no obvious corrosion phenomenon of fluoride ion.

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Abstract

The invention relates to a treatment method and device for fluorine-containing high-salt organic wastewater. The treatment device mainly includes five regions: a process intensification zone, a main reactor vaporization zone, a backpack-type vaporization zone, a crystallization separation zone and an anaerobic treatment zone. The present invention also provides a method for treating fluorine-containing high-salt organic wastewater by using the above-mentioned treatment device. The method and the device of the invention reduce the energy consumption of crystallization and weaken the corrosion of equipment by fluorine ions while efficiently desalting and removing COD.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a method and device for treating fluorine-containing high-salt organic wastewater. Background technique [0002] Fluoride salts and fluorides are widely used in industry. For example, in glass production, electroplating production, aluminum and steel refining, and semiconductor component production, a large amount of fluoride-based chemicals are commonly used, resulting in a large amount of fluorine-containing wastewater. If fluorinated wastewater is directly discharged without treatment or if the treatment is not up to standard, it will seriously pollute the environment and threaten human health. [0003] The treatment methods of fluorine-containing wastewater mainly include: chemical precipitation, coagulation precipitation, adsorption, electroflocculation, electrodialysis, etc. The chemical precipitation method is often used to treat high-concentrati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/36
CPCC02F9/00C02F2101/36C02F1/302C02F1/36C02F1/48C02F1/048C02F1/043C02F1/22C02F3/28Y02W10/37
Inventor 马传军王雪清马宁
Owner CHINA PETROLEUM & CHEM CORP
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