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Aerobic-process-based wastewater treatment method using modified graphene iron-carbon material

A technology for wastewater treatment and aerobic process, applied in aerobic process treatment, water/sewage treatment, water treatment parameter control, etc. Degradation of a large amount of organic matter, no secondary pollution, and the effect of reducing COD value

Active Publication Date: 2019-04-16
辽宁中舟得水环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The hydrogen peroxide method to directly oxidize propylene to produce propylene oxide (HPPO method for short) has a simpler process flow, milder reaction conditions, and the least investment; Methanol, sodium hydroxide, propionaldehyde hydrazone, sodium formate, hydrazine hydrate, propylene oxide dipropylene glycol monomethyl ether, etc.
Current biochemical treatment methods can be severely affected by these impurities, making the pollutants in the sewage not biodegradable effectively

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A kind of aerobic process wastewater treatment method that adopts modified graphene iron-carbon material of the present invention, its technical scheme is as follows:

[0022] Step 1. Add 0.8mol / L hydrochloric acid to the HPPO propylene oxide industrial waste water in the pH adjustment pool to adjust the pH to 3, and then pump the waste liquid into the electrolysis reaction tower for micro-electrolysis reaction. There is a modified graphene iron-carbon material in the reaction tower; in the electrolytic reaction tower, uniformly aerate for 45 minutes, and constantly add hydrochloric acid during the aeration, so that the pH value of the waste liquid remains below 4;

[0023] Step 2. Import the wastewater from step 1 into the bioregulation tank, add sodium hydroxide to adjust the pH value to 7.5, then add 0.5kg / t of phosphorus salt and 0.3kg / t of urea into the wastewater, stir and dissolve Uniform;

[0024] Step 3, pump the adjusted waste water into the biochemical syste...

Embodiment 2

[0034] A kind of aerobic process wastewater treatment method that adopts modified graphene iron-carbon material of the present invention, its technical scheme is as follows:

[0035] Step 1. Add 0.5 mol / L hydrochloric acid to the HPPO propylene oxide industrial wastewater in the pH adjustment pool to adjust the pH to 2, and then pump the waste liquid into the electrolysis reaction tower for micro-electrolysis reaction. There is a modified graphene iron-carbon material in the reaction tower; in the electrolytic reaction tower, uniformly aerate for 30 minutes, and constantly add hydrochloric acid during the aeration, so that the pH value of the waste liquid remains below 4;

[0036] Step 2. Import the wastewater from step 1 into the biological adjustment tank, add sodium hydroxide, adjust the pH value to 6.5, then add 0.2kg / t of phosphorus salt and 0.1kg / t of urea into the wastewater, stir and dissolve Uniform;

[0037] Step 3, pump the adjusted waste water into the biochemical...

Embodiment 3

[0047] A kind of aerobic process wastewater treatment method that adopts modified graphene iron-carbon material of the present invention, its technical scheme is as follows:

[0048] Step 1. Add 1.0mol / L hydrochloric acid to the HPPO propylene oxide industrial wastewater in the pH adjustment pool to adjust the pH to 4, and then pump the waste liquid into the electrolysis reaction tower for micro-electrolysis reaction. There is a modified graphene iron-carbon material in the reaction tower; in the electrolytic reaction tower, uniformly aerate for 60 minutes, and constantly add hydrochloric acid during the aeration, so that the pH value of the waste liquid remains below 4;

[0049] Step 2. Import the wastewater from step 1 into the bioregulation tank, add sodium hydroxide, adjust the pH value to 8.5, then add 0.7kg / t of phosphorus salt and 0.5kg / t of urea into the wastewater, stir and dissolve Uniform;

[0050] Step 3, pump the adjusted waste water into the biochemical system. ...

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Abstract

The invention discloses an aerobic-process-based wastewater treatment method using a modified graphene iron-carbon material. According to the situation that wastewater of a propylene oxide project ishigh in organic matter and salt content, the wastewater is treated by micro-ionization to achieve the purpose of preliminary electrochemical degradation of organic matter in wastewater and decrease ofthe COD value in wastewater. The modified graphene iron-carbon material is used, innumerable primary batteries are produced in equipment due to the potential difference produced by modified grapheneiron-carbon material, the reaction activity of the material is enhanced and meanwhile the problems of packing hardening and inactivation are solved. The technical scheme meets the requirement of national environmental protection, a pressure biological reaction device is used, the amount of degrading organic matter in wastewater is large, both temporary and permanent solutions are sought by one step, energy conservation and emission reduction are achieved, and no secondary pollution is caused.

Description

technical field [0001] The invention relates to the field of industrial wastewater treatment, and relates to the treatment of HPPO propylene oxide industrial wastewater by an aerobic process, in particular to an aerobic process wastewater treatment method using a modified graphene iron-carbon material. Background technique [0002] Propylene oxide plays an important role in organic chemical production. It can produce propylene glycol ether, propylene glycol, polyether polyol and other chemical substances. An important raw material for plastics. In the process of production, it is inevitable that industrial wastewater will be discharged, and its wastewater treatment process is very important for the production of this product. [0003] 201810278212.4 discloses a propylene oxide industrial wastewater treatment system, including a heat exchanger, a filtration system, a pervaporation system, a condenser, a vacuum pump, a liquid storage tank, a methanol tower, a main tower, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F1/001C02F1/46104C02F1/56C02F1/58C02F1/66C02F3/02C02F9/00C02F2101/30C02F2209/08
Inventor 王静叶兆健苗畅通周子卿
Owner 辽宁中舟得水环保科技有限公司
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