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Treatment method of wastewater containing amino compounds by copolymerization and extraction

An amine-based compound and treatment method technology, applied in extraction water/sewage treatment, chemical instruments and methods, water/sewage multi-stage treatment, etc., can solve the problem that high-concentration amine-containing wastewater cannot be treated, is difficult, and costs high problems, to achieve the effect of highlighting substantive features, reducing processing costs, and facilitating operation

Inactive Publication Date: 2012-07-11
蒋梦琪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, physical and chemical methods are costly and difficult to treat wastewater; biochemical treatment is only suitable for low-concentration amine-containing wastewater, and cannot treat high-concentration amine-containing wastewater, so it has certain limitations for wastewater treatment. There are deficiencies in the technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0014] Specific embodiment one: the aniline compound waste water containing high concentration is processed under normal temperature and pressure. Its steps are as follows:

[0015] Step 1: Place 100 L of wastewater containing aniline compounds in the copolymerization extraction reaction tower, and adjust the pH value of the wastewater to 5.7 with tap water. At this time, the concentration of aniline is 7500 μg / L, and the CODcr is 21670 mg / L;

[0016] Step 2: adding extractant oleic acid, the volume ratio of oleic acid to waste water is 1:200;

[0017] Step 3: reacting the waste water and oleic acid in the reaction tower with air aeration, and the aeration reaction time is 3 hours;

[0018] Step 4: After the wastewater and oleic acid in the reaction tower are aerated and reacted, let stand for 30 minutes;

[0019] Step 5: After standing still, liquid-liquid separation is carried out to the waste water and extractant in the reaction tower, and the extract phase after the upper...

specific Embodiment approach 2

[0021] Specific embodiment two: the o-chloroaniline wastewater containing high concentration is processed under normal temperature and pressure. Its steps are as follows:

[0022] Step 1: Place 100 L of o-chloroaniline-containing wastewater in the copolymerization extraction reaction tower, and adjust the pH value of the wastewater to 6.3 with tap water. At this time, the o-chloroaniline concentration is 6250 μg / L, and the CODcr is 6850 mg / L;

[0023] Step 2: adding extractant oleic acid, the volume ratio of oleic acid to waste water is 1:300;

[0024] Step 3: reacting the waste water and oleic acid in the reaction tower with air aeration, and the aeration reaction time is 2 hours;

[0025] Step 4: After the wastewater and oleic acid in the reaction tower are aerated and reacted, let stand for 15 minutes;

[0026] Step 5: After standing still, liquid-liquid separation is carried out to the waste water and extractant in the reaction tower, and the extract phase after the upper...

specific Embodiment approach 3

[0028] Specific embodiment three: the nitroaniline waste water containing high concentration is processed under normal temperature and pressure. Its steps are as follows:

[0029] Step 1: Place 100 L of nitroaniline-containing wastewater in the copolymerization extraction reaction tower, and adjust the pH value of the wastewater to 6.3 with tap water. At this time, the concentration of nitroaniline is 2460 μg / L, and the CODcr is 16130 mg / L;

[0030] Step 2: adding extractant oleic acid, the volume ratio of oleic acid to waste water is 1:200;

[0031] Step 3: reacting the waste water and oleic acid in the reaction tower with air aeration, and the aeration reaction time is 4 hours;

[0032] Step 4: After the wastewater and oleic acid in the reaction tower are aerated and reacted, let stand for 15 minutes;

[0033] Step 5: After standing still, liquid-liquid separation is carried out to the waste water and extractant in the reaction tower, and the extract phase after the upper l...

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Abstract

The invention provides a technical scheme of a treatment method of wastewater containing amino compounds by copolymerization and extraction. At normal temperature and normal pressure, the scheme comprises the following steps of: (1) placing the organic wastewater containing the amino compounds into a copolymerization and extraction reaction tower, regulating the pH value of the wastewater to 5.7-6.5; (2) adding an extracting agent, wherein the volume ratio of the extracting agent to the wastewater is 1: 100-1: 1000, and the extracting agent is of oleic acid or methyl oleate; (3) performing aeration reaction on the wastewater in the reaction tower, wherein the time of the aeration reaction is 2-6 hours; (4) standing for 5-30 minutes after the aeration reaction; (5) performing liquid-liquid separation on the wastewater in the reaction tower after standing, sucking out an extraction phase in the upper layer after reaction, placing into a decompression distillation reaction device, performing decompression distillation and recovering the extracting agent, so that low-concentration organic wastewater generated after copolymerization and extraction is left in the reaction tower; and (6) further performing treatment on the low-concentration organic wastewater through a biochemical treatment method and discharging the wastewater after the wastewater achieves the standard.

Description

Technical field: [0001] The invention relates to a method for treating waste water, in particular to a method for treating waste water containing amino compounds extracted by copolymerization. Background technique: [0002] In the petroleum and chemical industry, wastewater has the characteristics of large discharge volume, complex wastewater composition, poor biodegradability, toxic and harmful wastewater, etc. Therefore, this type of wastewater has always restricted the development of my country's environmental protection. Amino-containing organic compounds are widely used in pesticides, chemicals, printing and dyeing, and pharmaceutical industries. The compounds are carcinogenic, long-term residual, and bioaccumulative. These wastewaters have seriously affected people's normal life. In the prior art, amine-containing wastewater is mainly treated by physical, chemical and biological methods. The physical method mainly adopts adsorption method and resin method, the chemica...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F1/26C02F101/38
Inventor 蒋梦琪蒋文强
Owner 蒋梦琪
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