Treatment method of organic amine wastewater

A treatment method and organic amine technology, applied in the field of organic amine wastewater treatment, can solve the problems of generating harmful substances, side reaction incineration, secondary pollution, etc., and achieve the effects of reducing energy consumption, small footprint and easy control.

Inactive Publication Date: 2018-08-07
ZHEJIANG QICAI ECO TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] When the concentration of organic waste liquid is high, side reactions or insufficient incineration are prone to occur, harmful substances are generated, and secondary pollution is caused; when the concentration of organic waste liquid is low, a large amount of auxiliary fuel needs to be added during combustion, and energy consumption is high

Method used

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  • Treatment method of organic amine wastewater
  • Treatment method of organic amine wastewater

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Experimental program
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Embodiment 1

[0066] The processing system adopted in the processing method in embodiment 1 is as figure 1 shown.

[0067] The organic amine wastewater is adjusted to pH and heated and passed into the degassing membrane system. Organic amines and other volatile organic compounds enter the gas phase in the degassed membrane system. The degassed waste lye is diluted and neutralized and then enters the biochemical system for treatment. , the released organic amine waste gas is passed into the regulating tank, and after being diluted in the regulating tank, it passes through the heat exchanger to exchange heat with the incineration tail gas, and then passes into the catalytic incinerator for catalytic incineration. After the incinerated tail gas is cooled by the heat exchanger, a part Enter the regulating tank to dilute and preheat the organic amine waste gas, and the remaining part is passed into the water spray tower for washing with tap water. The water out of the washing is used to dilute t...

Embodiment 2

[0078] A special material company in Zhejiang, the main product is rubber gloves. Solvents DMF and triethylamine are also used in the glove production process, and a large amount of organic solvents can be recovered from workshop production wastewater through rectification. Because DMF is easy to decompose at high temperature, the condensed water of the rectification tower contains a large amount of small molecule organic amines, among which the content of dimethylamine is 1750mg / L, and the concentration of triethylamine is about 800mg / L. The direct entry of this waste water into the biochemical system will cause Wastewater discharge is not up to standard, and there is great difficulty in treatment.

[0079] The processing method is as follows:

[0080] (1) The workshop collects organic amine wastewater, adjusts the pH of the organic amine wastewater to 11, heats it with catalytic incineration tail gas to heat it to 65°C, and passes it into the polypropylene hollow fiber memb...

Embodiment 3

[0085]A chemical company in Jiangsu, the main product is the production of prochloraz and intermediates. In the production process of the product, a large amount of solvent DMF solvent is used, and triethylamine and propylamine are used as raw materials, and a large amount of waste water containing DMF and triethylamine and propylamine is produced per ton of product. The solvent wastewater workshop can recover a large amount of DMF through rectification, but the condensed water of the rectification tower contains a large amount of dimethylamine wastewater; other workshops produce a large amount of triethylamine and propylamine wastewater, of which the content of triethylamine is 2150 mg / L, and the content of propylamine The concentration is about 1100mg / L. The above wastewater enters the biochemical system for treatment through evaporation and condensate dilution, and the operation of the biochemical system is unstable. After adopting the amine-containing wastewater treatment...

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Abstract

The invention discloses a treatment method of organic amine wastewater. The treatment method includes following steps: (1), adjusting pH of the organic amine wastewater to above 10, rising temperatureto 25-80 DEG C, feeding the organic amine wastewater into a degassing membrane system to obtain waste lye and organic amine waste gas, and subjecting the waste lye to diluting, neutralizing and biochemical treatment; (2), feeding the organic amine waste gas into an adjusting tank, adjusting until TVOC concentration is 1000-8000mg/m<3>, and feeding into a catalytic reactor for catalytic burning byair volume of 200-10000m<3>/h, wherein reaction temperature of catalytic burning is 100-550 DEG C; (3), discharging tail gas of catalytic burning after water washing, acid pickling and/or alkali pickling. The treatment method is simple in operation, thorough in purification and free of secondary pollution.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to a method for treating organic amine wastewater. Background technique [0002] Organic amine wastewater mainly comes from industries such as tires, leather, and textiles, and is characterized by high concentration, strong toxicity, and difficulty in biochemical treatment. [0003] At present, domestic conventional treatment methods for organic amine wastewater mainly include biochemical treatment methods, including biochemical treatment methods, chemical oxidation or catalytic oxidation methods, and incineration methods. [0004] For example, the Chinese patent document with publication number CN104098228A discloses a method for organic amine wastewater, which mainly uses pre-oxidation, anaerobic, anoxic-aerobic bioreactor, enhanced coagulation / advanced oxidation, biological aerated filter Removal of organic amines in wastewater. The invention is complicated to operate and ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14B01D53/14B01D53/18B01D53/56B01D53/62B01D53/78F23G7/07C02F101/38
CPCB01D53/1456B01D53/1475B01D53/18B01D53/56B01D53/62B01D53/78C02F1/20C02F1/44C02F1/66C02F3/00C02F9/00C02F2101/38C02F2301/08F23G7/07
Inventor 毛兵李翔陈丽娜吕杨
Owner ZHEJIANG QICAI ECO TECH CO LTD
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