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Degradation method and degradation system of organic wastewater

A technology of organic wastewater and degradation reaction, applied in the direction of oxidized water/sewage treatment, etc., can solve problems such as pH value effect, achieve high degradation efficiency and realize the effect of resource utilization

Active Publication Date: 2021-01-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This degradation method can maintain a high level in the pH value of wastewater in a wide pH range of 1-12, and successfully solves the problem that the Fenton system is greatly affected by the pH value in the process of degrading organic wastewater

Method used

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  • Degradation method and degradation system of organic wastewater
  • Degradation method and degradation system of organic wastewater

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 Shown, a kind of degradation system of organic waste water, comprises:

[0038] The mixing kettle is equipped with a first stirring paddle inside, and a hydrogen peroxide feeding port is arranged on the top, and its inlet end is connected to an organic waste water source; the water inlet pipe of the mixing kettle is arranged at the bottom of the mixing kettle, and the water outlet pipe is arranged at the upper end of the mixing kettle. The first stirring paddle rotates driven by the first motor. The specific structure of the first stirring paddle is not limited, and may be any existing stirring paddle structure capable of achieving a mixing effect.

[0039] The reaction kettle is equipped with a second stirring paddle inside, and a ferric ion feeding port is provided on the top, and its inlet port is connected with the outlet port of the mixing kettle; the second stirring paddle rotates under the drive of the second motor, and the specific configuratio...

Embodiment 2

[0043] Reagent: o-phenylenediamine (C6 h 8 N 2 ), H 2 o 2 (30%), NaSiO 3 , FeSO 4 , Fe 2 (SO 4 ) 3 , NaOH, and HCl were of analytical grade and purchased from Aladdin.

[0044] Prepare o-phenylenediamine solution (simulated o-phenylenediamine organic waste water), wherein, the concentration of o-phenylenediamine is 0.04mol / L, it is equally divided into 42 parts, and the volume of every part is 500ml, is divided into six groups, each Group 7 and adjust the pH of each solution in each group.

[0045] The first group, the pH value is 1, 3, 5, 7, 9, 11, 13;

[0046] The second group, the pH value is 1, 3, 5, 7, 9, 11, 13 in turn;

[0047] The third group, the pH value is 1, 3, 5, 7, 9, 11, 13 in turn;

[0048] The fourth group, the pH value is 1, 3, 5, 7, 9, 11, 13 in turn;

[0049] The fifth group, the pH value is 1, 3, 5, 7, 9, 11, 13 in turn;

[0050] The sixth group, the pH value is 1, 3, 5, 7, 9, 11, 13 in turn.

[0051] The test method of the first group is to ...

Embodiment 3

[0061] The incoming water of organic waste water containing o-phenylenediamine enters the mixing tank. The pH value of the organic waste water is 7.6. Hydrogen peroxide is added to the organic waste water in the mixing tank. The amount of hydrogen peroxide added per liter of organic waste water is 0.2mol. Turn on the first motor to drive the first stirring paddle to rotate, and at the same time turn on the second pump to pump the organic wastewater from the bottom of the mixing tank to the upper end of the mixing tank, so that the organic wastewater is mixed with hydrogen peroxide in the circulating flow. After fully mixing, transfer the mixed solution in the mixing tank to the reaction tank, and add iron sulfate to it, and Fe in each liter of organic wastewater 2 (SO 4 ) 3 The dosage is 0.01mol, and the second motor is turned on to drive the second stirring paddle to rotate, so that ferric ions and organic wastewater are mixed evenly, and the degradation reaction is fully ca...

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Abstract

The invention discloses an organic wastewater degrading method and system. The method comprises the following steps: adding hydrogen peroxide to organic wastewater; uniformly mixing; adding ferric ion; uniformly mixing; degrading. According to the method, the adding sequence of hydrogen peroxide and ferric ion is adjusted; the organic wastewater is mixed with hydrogen peroxide in advance, and thenthe ferric ion is added, so that the degrading efficiency is high under the pH range of 1-12 of the organic wastewater, and as a result, the pH range that the degrading reaction can be carried out isobviously expanded; the pH of the organic wastewater is not repeatedly adjusted during degrading reaction; acid can be added to adjust pH while degrading alkaline organic wastewater, and thus the labor and financial investment can be decreased.

Description

technical field [0001] The invention belongs to the field of organic wastewater treatment, and in particular relates to a degradation method and a degradation system of organic wastewater. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Organic wastewater generally refers to wastewater with COD above 2000mg / L discharged from industries such as papermaking, leather, food, and pharmaceutical production. It can usually be divided into three categories according to its nature and source: 1) Wastewater that does not contain harmful substances and is easily biodegradable High-concentration organic wastewater, which generally comes from industrial wastewater that uses agricultur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72
Inventor 闫云涛张柯毛岩鹏李国杨忠
Owner SHANDONG UNIV