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A kind of organic arsenic wastewater treatment and arsenic stabilization method

A technology for wastewater treatment and organic arsenic, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., to reduce the cost of sewage treatment, inhibit re-release, and weaken bioavailability

Active Publication Date: 2021-05-07
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the cost of adsorption technology is relatively low, it only transfers pollutants
In addition, the arsenic-containing regeneration solution formed by traditional adsorption methods is also an unsolved problem

Method used

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  • A kind of organic arsenic wastewater treatment and arsenic stabilization method
  • A kind of organic arsenic wastewater treatment and arsenic stabilization method
  • A kind of organic arsenic wastewater treatment and arsenic stabilization method

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Embodiment Construction

[0025]Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, there are all other embodiments obtained without making creative labor without making creative labor premises.

[0026]SeeFigure 1-3The present invention provides a technical solution: an organic arsenic wastewater treatment and arsenic stabilization method, and 200ml simulated organic arsenic contaminated wastewater, the initial concentration of amino benzophenic acid is 30 mg / L; 3.5 mmol / L was added to the wastewater After sodium metallicate and 1.5 mmol / L of ethylenediamine four acetic acid, the control system pH was 6.5, followed by a flow rate of 60 ml / s into the system, and added 20 mg of nano-zero price iron powder; stir for ...

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Abstract

The invention discloses a method for treating organic arsenic wastewater and stabilizing arsenic. Specifically, in a neutral aerobic environment, zero-valent iron and complexes are added for stirring, and the formed active oxygen species can completely remove the organic arsenic in the water body. Oxidation to inorganic arsenic; after the oxidation stage is over, stop the aeration and add aluminum salt to continue stirring, and form a variety of hydroxyl complexes and hydroxides to achieve effective separation of inorganic arsenic; by controlling the complexes, zero-valent iron and The proportion of aluminum salt can further realize the stabilization of arsenic-containing sludge; this method can realize the thorough purification of organic arsenic wastewater, the amount of arsenic-containing sludge formed is small, the amount of arsenic leaching in sludge is small, and the bioavailability is weak; this method It can be used for the treatment of livestock and poultry breeding wastewater, industrial wastewater, surface water and groundwater containing organic arsenic.

Description

Technical field[0001]The present invention relates to the field of wastewater treatment treatment, and is specifically an organic arsenic wastewater treatment and arsenic stabilization method.Background technique[0002]Aromatic organic arsenic acid such as aminobenzoic acid, 3-nitro-4 hydroxybenzene acid has a wide range of livestock and poultry farming in my country with broad-spectrum, promoting livestock and poultry growth and improving productivity. . Such aromatic organic arsenic is difficult to decompose in animal metabolism, and most of them are excreted with the drug prototype with the body. Since such organic arsenic is high, it is easy to migrate into ground water, soil and groundwater, and the mechanism of biological and non-biological is converted into inorganic arsenic, which is more migrated, and more toxic. As the largest livestock and poultry meat producer, my country has more than 1,000 yuan of consumption of feed additives such as aminophenic acid, and there are als...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F11/00C02F11/12C02F11/122C02F11/127C02F101/30C02F101/38C02F101/34
CPCC02F1/5236C02F1/725C02F1/727C02F1/74C02F11/12C02F11/122C02F11/127C02F2101/30C02F2101/34C02F2101/38
Inventor 何小松虞敏达席北斗张慧毛旭辉李丹
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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