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Bionic removal method for wastewater containing low-concentration organic amine

An organic amine and low-concentration technology, applied in chemical instruments and methods, water pollutants, light water/sewage treatment, etc., can solve the problems of reduced number of living organisms, long time required for wastewater treatment, etc., and achieve less waste residue generation , Avoid pollution transfer and secondary pollution, and the effect of short treatment time

Inactive Publication Date: 2020-02-21
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the problem that the existing biological method requires a long time for wastewater treatment and the low content of carbon (C) and nitrogen (N) will lead to a decrease in the number of living organisms. The need for friendly removal of organic amines in wastewater, and a biomimetic removal method for wastewater containing low concentrations of organic amines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 0.05 g of ferrous sulfate heptahydrate to 100 mL of lysine aqueous solution with an initial COD of 282.2 mg / L and a nitrogen content of about 25 mg / L, and adjust the pH to 7.5-8 with sodium hydroxide. The solution was then placed under light intensity of 10×10 3 μW / cm 2 ~15×10 3 μW / cm 2 Irradiated under sunlight, after 5 hours, the residual COD measured in the solution was 162 mg / L, and the residual ammonia nitrogen concentration was 6.5 mg / L.

[0026] At the same time, without adding ferrous sulfate, the same light contrast experiment was carried out. After 5 hours, the residual COD of the solution was 210 mg / L, and the residual ammonia nitrogen concentration was about 23 mg / L.

Embodiment 2

[0028] Add 0.001 g of ferric sulfate to 100 mL of EDTA (disodium ethylenediaminetetraacetic acid) aqueous solution with an initial COD of 362.8 mg / L and a nitrogen content of about 24 mg / L, and adjust the pH to 4-4.5 with hydrochloric acid. Then this solution was ventilated into the air, and placed in a light intensity of 20×10 3 μW / cm 2 ~30×10 3 μW / cm 2 exposure to sunlight. After 5 hours, the residual COD measured in the solution was 168 mg / L, and the residual total nitrogen concentration was about 18 mg / L.

[0029] At the same time, the same light contrast experiment was carried out without adding ferric sulfate. After 5 hours, the residual COD of the solution was 300 mg / L, and the residual total nitrogen concentration was about 23 mg / L.

Embodiment 3

[0031] Add 0.03 g of ferric chloride to 100 mL of di-n-butylamine aqueous solution with an initial COD of 327.7 mg / L and a nitrogen content of about 24 mg / L, and adjust the pH to 8.5-9.0 with potassium hydroxide. Then, under the oxygen flow, the solution was placed in a light intensity of about 25×10 3 μW / cm 2 Left and right sun exposure. After 5 hours, it was measured that the residual COD in the solution was 235 mg / L, and the residual ammonia nitrogen concentration was about 10.0 mg / L.

[0032] At the same time, without adding ferric chloride, the same light contrast experiment was carried out. After 5 hours, the residual COD of the solution was 278.3 mg / L, and the residual ammonia nitrogen content was about 23 mg / L.

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PUM

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Abstract

The invention discloses a bionic removal method for wastewater containing low-concentration organic amine. Under inspiration of the self-purification function of a water body, the method realizes thepurification of the water body under the conditions of being close to the natural water body environment and being assisted by illumination. The method comprises the steps: adding a transition metal-containing compound into a water body containing low-concentration organic amine, and then carrying out deamination operation in an aerobic environment and under the irradiation of sunlight (or simulated sunlight). The method is characterized in that under illumination, the content of amine in the wastewater is reduced by controlling the addition amount of the transition metal-containing compound and controlling the pH value of the solution. According to the method, amine pollutants are removed in a bionic mode under the condition close to the natural water body environment. Compared with a pure biological method, the method has the advantages that the environmental compatibility advantage of the biological method is reserved, the time required for water body treatment is shortened, used reagents are economical and easy to obtain, contained species are common species in the natural water body, no harmful element is added into a system in the pollutant removal process, and the method isan environment-friendly treatment process.

Description

【Technical field】 [0001] The invention relates to the field of waste water treatment of environmental technology, in particular to a method for biomimetic removal of waste water containing low-concentration organic amines. 【Background technique】 [0002] Water is the source of life. Water resources are also an indispensable natural resource for human production and life, and one of the most important elements of the ecological environment. [0003] The water body itself has the function of self-purification. However, when the pollutants in the water body exceed its self-purification capacity, serious water pollution will occur. This harmful effect will also pose a serious threat to human health and become a "bottleneck" restricting the sustainable development of economy and society. [0004] Wastewater containing organic amines only accounts for about 1% of the total amount of organic wastewater discharged by industry, but its harmfulness has reached 50%. Wastewater cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F101/38
CPCC02F1/30C02F2101/38
Inventor 孙波宋雪李学领王皓天吴新世万钧张春雪
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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