Method for treating industrial wastewater containing hexamethylenediamine

A technology for industrial wastewater and treatment methods, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve problems such as easy harm to the environment, and avoid sludge swelling , the effect of improved biodegradability and stable operation

Inactive Publication Date: 2011-03-30
SHEN MA INDUSTRY CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a treatment method for industrial wastewater containing hexamethylenediamine, so as to overcome the problems that existing biochemical treatment methods still have relatively large hidden dangers and are easy to endanger the environment.

Method used

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  • Method for treating industrial wastewater containing hexamethylenediamine
  • Method for treating industrial wastewater containing hexamethylenediamine
  • Method for treating industrial wastewater containing hexamethylenediamine

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Embodiment 1

[0041] The treatment method of industrial wastewater containing hexamethylenediamine adopts the A-A-O (anaerobic biological treatment-anoxic-aerobic) treatment process, and combined with the attached drawings, the following steps are carried out in sequence:

[0042] (1) After the industrial wastewater containing hexamethylenediamine is homogenized by the front-end regulating tank 1, it enters the biochemical water treatment system to keep the wastewater load and water volume relatively stable. 11.3, the inlet water temperature is around 35°C.

[0043](2) The wastewater enters the hydrolysis and acidification treatment process, and the water is evenly distributed from the bottom 3 of the pool to ensure that the average residence time is 18 hours. Elastic fillers are evenly distributed in the pool to fix the activated sludge, increasing the contact area between the wastewater and the activated sludge; the submerged mixer is used to prevent a large amount of activated sludge fro...

Embodiment 2

[0056] (1) After the industrial wastewater containing hexamethylenediamine is homogenized by the front-end regulating tank 1, it enters the biochemical water treatment system to keep the wastewater load and water volume relatively stable, and control the CODcr of the wastewater inflow at 784 mg / L and the pH value at 11.1, the inlet water temperature is around 30°C.

[0057] (2) The wastewater enters the hydrolysis and acidification treatment process, and the water is evenly distributed from the bottom 3 of the pool to ensure that the average residence time is 17 hours. Elastic fillers are evenly distributed in the pool to fix the activated sludge, increasing the contact area between the wastewater and the activated sludge; the submerged mixer is used to prevent a large amount of activated sludge from depositing and make the water quality uniform to ensure the anaerobic treatment effect. At the same time, part of the sludge return is carried out by the secondary settling tank 6...

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Abstract

The invention belongs to the technical field of wastewater treatment, in particular to amethod for treating industrial wastewater containing hexamethylenediamine by sequentially carrying out anaerobic biological treatment, hypoxia treatment, aerobic treatment and drainage to wastewater. The invention has simple process, low operation cost and good wastewater treatment effect, can stably reach the emission standard of chemical industrial wastewater containing the hexamethylenediamine so that various indexes of dischage water stably reach or exceed the A-catalog indexes of national first-order discharge water.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a treatment method for industrial wastewater containing hexamethylenediamine. Background technique [0002] There are many types of wastewater discharged from the production of modern chemical industry, and most of them are highly toxic and not easy to purify. Among them, organic chemical wastewater has various components, including wastewater discharged from synthetic rubber, synthetic plastics, artificial fibers, synthetic dyes, paint coatings, pharmaceuticals, etc., which has a strong oxygen-consuming nature and strong toxicity. Compounds are therefore highly polluting and difficult to decompose. Among them, during the production of polyamides such as nylon 66, nylon 610, etc., and the use of these raw materials for industrial yarn production, the main pollutants of industrial wastewater generated are single hexamethylenediamine monomers and a small a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/30
Inventor 张鲁亚王海义陈春襄米东兴张国庆陈学民李东智樊根成石建国刘自豪郭义合李涛聂建伟樊惠林王克建
Owner SHEN MA INDUSTRY CO LTD
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