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Polyphenylene sulfide production wastewater deep treatment method

A technology for the production of wastewater and polyphenylene sulfide, which is applied in natural water treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve problems such as environmental pollution, limit the industrial production of polyphenylene sulfide, and achieve input costs Low, reduce the effect of adverse effects

Inactive Publication Date: 2015-11-11
ZHANGJIAGANG XINSHENG NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no suitable method at home and abroad to treat the wastewater produced by polyphenylene sulfide, which not only easily pollutes the environment, but also seriously limits the industrial production of polyphenylene sulfide.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The method for deepening the treatment of polyphenylene sulfide production wastewater comprises the following steps:

[0020] (1) First take a certain amount of polyphenylene sulfide production wastewater, then adjust the pH value of the polyphenylene sulfide production wastewater to 7, then add PAC and stir for 30 minutes. The amount of PAC added is 0.1% of the weight of the polyphenylene sulfide production wastewater. %, then add PAM, the addition of PAM is 0.1% of the weight of polyphenylene sulfide production wastewater, after the flocculation and sedimentation, get the supernatant;

[0021] (2) Next, adjust the pH value of the supernatant obtained in step (1) to 4, then perform iron-carbon micro-electrolysis treatment for 2 hours, and then take the supernatant after standing still;

[0022] (3) Then adjust the pH value of the supernatant obtained in step (2) to 7, then add PAC and stir for 30 minutes, the amount of PAC added is 0.1% of the weight of the supernatant...

Embodiment 2

[0026] The method for deepening the treatment of polyphenylene sulfide production wastewater comprises the following steps:

[0027] (1) First take a certain amount of polyphenylene sulfide production wastewater, then adjust the pH value of the polyphenylene sulfide production wastewater to 9, then add PAC and stir for 45 minutes. The amount of PAC added is 0.5% of the weight of the polyphenylene sulfide production wastewater. %, then add PAM, the addition of PAM is 0.5% of the weight of polyphenylene sulfide production wastewater, after the flocculation and sedimentation, get the supernatant;

[0028] (2) Next, adjust the pH value of the supernatant obtained in step (1) to 5, then perform iron-carbon micro-electrolysis treatment for 4 hours, and then take the supernatant after standing still;

[0029] (3) Then adjust the pH value of the supernatant obtained in step (2) to 8, then add PAC and stir for 45 minutes, the amount of PAC added is 0.5% of the weight of the supernatant...

Embodiment 3

[0033] The method for deepening the treatment of polyphenylene sulfide production wastewater comprises the following steps:

[0034] (1) First take a certain amount of polyphenylene sulfide production wastewater, then adjust the pH value of polyphenylene sulfide production wastewater to 10, then add PAC and stir for 60 minutes, the amount of PAC added is % of the weight of polyphenylene sulfide production wastewater , then add PAM again, the addition of PAM is 1% of the polyphenylene sulfide production wastewater weight, after the flocculation and sedimentation, get the supernatant;

[0035] (2) Next, adjust the pH value of the supernatant obtained in step (1) to 6, then perform iron-carbon micro-electrolysis treatment for 6 hours, and then take the supernatant after standing still;

[0036] (3) Then adjust the pH value of the supernatant obtained in step (2) to 10, then add PAC and stir for 60 minutes. The amount of PAC added is 1% of the weight of the supernatant obtained in...

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Abstract

The invention discloses a polyphenylene sulfide production wastewater deep treatment method which comprises the following steps: (1) taking polyphenylene sulfide production wastewater, adjusting the pH value to be 7-10, adding PAC and stirring for 30-60 minutes, adding PAM, precipitating, and then taking supernatant liquid; (2) adjusting the pH value of the supernatant liquid to be 4-6, carrying out iron-carbon micro-electrolysis treatment for 2-6 hours, and then taking supernatant liquid; (3) adjusting the pH value of the supernatant liquid to be 7-10, adding PAC and stirring for 30-60 minutes, adding PAM, precipitating, and then taking supernatant liquid; (4) adding active sludge into the supernatant liquid, and then stirring for 6-24 hours, wherein the addition of the active sludge accounts for 20-80% of the weight of the supernatant liquid obtained in the step (3); and (5) carrying out oxygenic aeration for 32-40 hours, and then carrying out centrifugal separation to obtain active sludge and qualified polyphenylene sulfide production wastewater. The polyphenylene sulfide production wastewater deep treatment method has the advantage of treating polyphenylene sulfide production wastewater into qualified industrial wastewater.

Description

technical field [0001] The invention relates to a method for deepening the treatment of polyphenylene sulfide production wastewater. Background technique [0002] The sodium sulfide method is a commonly used production method of polyphenylene sulfide at home and abroad. During the production of polyphenylene sulfide by the sodium sulfide method, a large amount of polyphenylene sulfide production wastewater will be generated, and the polyphenylene sulfide production wastewater has a large amount of water quality fluctuations. , poor biodegradability, complex composition, containing a large amount of benzene rings and heterocyclic organics, and high COD content (COD value can reach 6000-10000mg / L), it is one of the typical difficult-to-treat industrial wastewater. At present, there is no suitable method to treat polyphenylene sulfide production wastewater at home and abroad, which not only easily pollutes the environment, but also seriously limits the industrial production of ...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/38
Inventor 唐峰栗鹏伟
Owner ZHANGJIAGANG XINSHENG NEW MATERIAL
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