Hydroxylamine hydrochloride heterogeneous Fenton-like system and application thereof

A hydroxylamine hydrochloride, heterogeneous technology, applied in the field of water treatment, can solve problems such as poor effect, limited reducibility, and inability to achieve very satisfactory results, achieve broad practical application prospects, alleviate insufficient reducibility, and improve The effect of organic removal rate

Pending Publication Date: 2021-05-07
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its own reducible characteristics are limited, and the effect is not good in the application of activated persulfate, and it cannot achieve very satisfactory results in its catalyzed persulfate system.

Method used

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  • Hydroxylamine hydrochloride heterogeneous Fenton-like system and application thereof
  • Hydroxylamine hydrochloride heterogeneous Fenton-like system and application thereof
  • Hydroxylamine hydrochloride heterogeneous Fenton-like system and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039]Example 1 Hydroxylamine hydroxylamine synergism of chloride decomposing in uniforms in Fantonian system degrades organic pollutants

[0040]1. Hydroxylamine hydroxylamine in the form of Fandon system: Hydroxylamine (HA), chloride (FeoCl), potassium hydroxide (PMS), wherein the ratio of hydrochloride and a sulfate substance is 1: 1.5, the ratio of the hydroxylamine and the ferric oxide substance of the hydrochloride is 1: 1.9.

[0041]2, experimental method

[0042]Experimental group (PMS / HA / FeoCl): 98ml of aqueous solution containing 5 mg / l-cyclopropoxicle was added to 250 mL cone flakes as a hydrochloride hydroxylamine having a concentration of 100 mmol / L and 0.02 g (0.19 mmol). Iron oxide, adjusted pH of 6.5, then adding 1 ml of potassium hydrogen sulfate at a concentration of 150 mmol / L, at room temperature for 15 minutes.

[0043]PMS control group: 99 ml of 5 mg / L cyclopropoxicle was added to 250 mL cone flakes as a water body to be treated, and the pH was 6.5, and then 1 ...

Embodiment 2

[0048]Example 2, hydroxylamine hydroxylamine non-uniform phase of Fandon system degrades organic pollutants

[0049]Example 1 is exchanged in three iron oxide and three iron hydroxide, that is, the composition of the system: hydroxylamine hydroxylamine, iron oxide / ferric / tetraned iron, potassium hydrogen sulfate, other operations The experimental group in Example 1 was 15 minutes, and the results are shown in Table 1.

[0050]Table 1, the removal rate of cyclopropoxicle

[0051] catalyst Chloride Ferric oxide Iron oxide Removal rate (100%)98.8816.3322.92

[0052]It can be seen from Table 1 that after the system is changed to three iron oxide and three iron dioxide, the removal rate of cyclopropoxicle is greatly reduced. This shows that chlorine oxide has a better non-uniform phase-fungion system activity of two ferric ferrous oxide and three iron dioxide, further reflecting the efficiency of the system of the present invention.

Embodiment 3

[0053]Example 3, hydroxylamine hydroxylamine synergistic chloride orthodoxide inverted E. coli

[0054]1, hydroxylamine hydroxylamine inverarin: hydroxylamine, hydroxylamine, hydroxide, potassium hydrochloride, wherein the ratio of hydrochloride and hydrogen sulfate substance is 1: 1.5, hydroxylamine and chlorine The ratio of iron oxide material is 1: 1.9.

[0055]2, experimental method

[0056]LB culture fluid composition: trypsin 10g / L, yeast extract 5g / L, sodium chloride 10g / L, solvent is water, pH is natural.

[0057]LB solid medium composition: trypsin 10g / L, yeast extract 5 g / L, sodium chloride 10g / L, agar 15g / L, solvent is water, pH is natural.

[0058]Escherichia coli liquid: Inoculated E. coli (CMCC44102) in 100 mL of LB culture solution, the culture was activated in 37 ° C constant temperature incubator, and then passed through 5000 rpm centrifugation, and the precipitate was washed with sterilized water twice. Sterile water housing and dilute to 1 × 108CFU / mL, which is E...

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Abstract

The invention discloses a hydroxylamine hydrochloride heterogeneous Fenton-like system and an application thereof. The hydroxylamine hydrochloride heterogeneous Fenton-like system is prepared by adding hydroxylamine hydrochloride, iron oxychloride and persulfate into wastewater to be treated and stirring and reacting at room temperature for 5-15 minutes. The catalytic activity of iron oxychloride on persulfate is effectively improved, organic pollutants in water can be effectively removed under the condition that the pH value is close to neutral, the disinfection and inactivation of escherichia coli are realized, and the used catalyst iron oxychloride still has relatively good catalytic activity after being recycled for five times.

Description

[0001](1) Technical field[0002]The present invention belongs to the field of water treatment, and more particularly to a new type of non-uniform phase of Fandon system composed of hypervonary sulfate, hydroxylamine and chloride oxide and its degradation of organic contaminants in water and inactivating E. coli.[0003](2) Background[0004]With the rapid development of my country's urbanization, the yield of wastewater has increased, and its ingredients become more complicated. Basic water treatment processes such as biological treatment, adsorption, precipitation and chlorine disinforcement are difficult to withstand current more complex water pollution, which urgently needs innovative more advanced water treatment materials and techniques.[0005]As a simple and effective method, the advanced oxidation process has recently been widely used in water treatment, and disinfecting organic pollutants in the wastewater and disinfected. Among them, the high-grade oxidation process based on sulf...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F101/30
CPCC02F1/725C02F1/722C02F2101/30C02F2303/04C02F2305/026
Inventor 罗宏伟曾一峰程莹何东芹潘响亮
Owner ZHEJIANG UNIV OF TECH
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