Organic arsenic wastewater treatment and arsenic stabilization method

A wastewater treatment and organic arsenic technology, applied in water/sewage treatment, chemical instruments and methods, oxidized water/sewage treatment, etc., to achieve the effects of inhibiting re-release, weakening bioavailability, and reducing sewage treatment costs

Active Publication Date: 2020-03-13
CHINESE RES ACAD OF ENVIRONMENTAL SCI
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of adsorption technology is relatively low, it only transfers pollutants
In addition, the a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic arsenic wastewater treatment and arsenic stabilization method
  • Organic arsenic wastewater treatment and arsenic stabilization method
  • Organic arsenic wastewater treatment and arsenic stabilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] see Figure 1-3 , the present invention provides a technical solution: a method for organic arsenic wastewater treatment and arsenic stabilization, taking 200mL simulated organic arsenic polluted wastewater, the initial concentration of p-aminophenylarsine is 30mg / L; adding 3.5mmol / L After the sodium metasilicate and ethylenediaminetetraacetic acid of 1.5mmol / L, the pH of the control system is 6.5, and then the flow rate is 60mL / s to pass oxygen into th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses an organic arsenic wastewater treatment and arsenic stabilization method, which specifically comprises the following steps: in a neutral aerobic environment, adding zero-valentiron and a complex, and stirring to form active oxygen species, and thoroughly oxidizing organic arsenic in a water body into inorganic arsenic by using the active oxygen species; after the oxidationstage is finished, stopping aeration, adding an aluminum salt, and stirring continuously to form various hydroxyl complexes and hydroxides so as to achieve the effective separation of inorganic arsenic; and controlling the ratio of the complex to the zero-valent iron to the aluminum salt in the system so as to achieve the stabilization of the arsenic-containing sludge. According to the method, the thorough purification of organic arsenic wastewater can be realized, the formed arsenic-containing sludge is small in amount, the leaching amount of arsenic in the sludge is small, and the bioavailability is weak. The method can be used for treating livestock and poultry breeding wastewater, industrial wastewater, surface water and underground water containing organic arsenic.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment and disposal, in particular to an organic arsenic wastewater treatment and arsenic stabilization method. Background technique [0002] Aromatic organic arsenic such as p-aminophenylarsine acid and 3-nitro-4-hydroxyphenylarsine acid has broad-spectrum sterilization, promotes the growth of livestock and poultry, and improves egg production rate, so it is widely used in my country's livestock and poultry breeding industry . This kind of aromatic organic arsenic is difficult to metabolize and decompose in animals, and most of it is excreted in the feces as the drug prototype. Due to the high water solubility of this kind of organic arsenic, it is easy to migrate and diffuse into surface water, soil and groundwater, and through biological and abiotic mechanisms, it is transformed into inorganic arsenic with stronger migration ability and higher toxicity. As the largest producer of livesto...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap