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A device and method for treating refractory organic matter in high-concentration waste hydrochloric acid

A technology for refractory organic matter and waste hydrochloric acid, which is applied in the field of devices for treating refractory organic matter in high-concentration waste hydrochloric acid, can solve problems such as unsatisfactory effects, achieve remarkable treatment effects, simple treatment process, and reduced content

Inactive Publication Date: 2016-08-31
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But above-mentioned device and method are unsatisfactory when dealing with the organic matter in the waste hydrochloric acid of high concentration

Method used

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  • A device and method for treating refractory organic matter in high-concentration waste hydrochloric acid

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Effect test

Embodiment 1

[0018] Embodiment 1: COD is 200mg / L, and the waste hydrochloric acid that hydrochloric acid concentration is 12mol / L is passed into reactor 2, releases hydrogen simultaneously to form gas-liquid mixture, every processing 1L of waste hydrochloric acid adds the hydrogen of 20ml; Utilization power is 10kw The pulse power supply 10 generates a pulse voltage with a frequency of 1000HZ and an average voltage of 440V, which is discharged through the electrode plate 5, and the hydraulic retention time (ie, the reaction time of waste hydrochloric acid per unit mass in the reactor 2) is 20 minutes. The COD in the degraded waste hydrochloric acid was 52 mg / L, and the removal rate of organic matter was 74.0%.

Embodiment 2

[0019] Embodiment 2: COD is 240mg / L, and the waste hydrochloric acid that hydrochloric acid concentration is 12mol / L is passed into reactor 2, releases hydrogen at the same time to form gas-liquid mixture, every processing 1L of waste hydrochloric acid adds the hydrogen of 15ml; Utilization power is 5kw The pulse power supply 10 generates a pulse voltage with a frequency of 1000HZ and an average voltage of 440V, which is discharged through the electrode plate 5, and the hydraulic retention time is 30min. The COD in the degraded waste hydrochloric acid was 52 mg / L, and the removal rate of organic matter was 78.3%.

Embodiment 3

[0020] Embodiment 3: COD is 211mg / L, and the waste hydrochloric acid that hydrochloric acid concentration is 8mol / L is passed into reactor 2, releases hydrogen simultaneously to form gas-liquid mixture, every processing 1L of waste hydrochloric acid adds the hydrogen of 20ml; Utilization power is 20kw The pulse power supply 10 generates a pulse voltage with a frequency of 1000HZ and an average voltage of 440V, which is discharged through the electrode plate 5, and the hydraulic retention time is 10 minutes. The COD in the degraded waste hydrochloric acid was 60 mg / L, and the removal rate of organic matter was 71.6%.

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Abstract

The invention discloses a device for processing degradation-resistant organic substances in high-concentration waste hydrochloric acid. The device comprises a reactor, a pulse power supply and an electrode plate arranged in the reactor, wherein the electrode plate is connected with the pulse power supply; an atomizing spray head is arranged on the top of the reactor, and the atomizing spray head is communicated with a water inlet pipeline; a water outlet is formed in the bottom of the reactor, an aeration head is further arranged on the bottom of the reactor, and the aeration head is communicated with a hydrogen gas pipeline. The invention further discloses a method for processing degradation-resistant organic substances in high-concentration waste hydrochloric acid, wherein the method comprises the following steps: introducing hydrogen gas while introducing high-concentration waste hydrochloric acid into a reactor to atomize, sufficiently discharging after forming a gas-liquid mixture, generating a great number of strong oxidizing hydroxyl radical particles, and converting chlorine ions into strong oxidizing chlorine radical ions; oxidizing and degrading the organic substances through cooperative effects of the strong oxidizing hydroxyl radical particles and the strong oxidizing chlorine radical ions. According to the device and the method disclosed by the invention, the cooperative effects are remarkable, the degradation-resistant organic substances in the waste hydrochloric acid can be effectively treated, the concentration of the hydrochloric acid is not reduced and the follow-up recycling of the hydrochloric acid is not affected.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a device and method for treating refractory organic matter in high-concentration waste hydrochloric acid. Background technique [0002] my country's energy has the characteristics of rich coal, poor oil, and little gas. In recent years, the coal chemical industry has developed rapidly in my country, which has also caused air pollution and water pollution. For example, in the coal chemical industry, the mainstream coal gasification technology has produced a large number of Wastewater, the main components of wastewater are ammonia nitrogen, chlorine, formate, suspended solids, etc. In addition, in the fertilizer production industry, in order to reduce production costs, some enterprises adopt the reaction of sulfuric acid and potassium chloride to produce sulfur-based compound fertilizers. However, the reaction of sulfuric acid and potassium chloride is an incomplete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461C02F1/467C02F1/72C02F1/76C01B7/07
Inventor 李孟李苾蕊
Owner WUHAN UNIV OF TECH
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