Method for purifying pig-breeding wastewater by manganese metal self-loaded biochar

A self-loading, biochar technology, applied in chemical instruments and methods, animal husbandry wastewater treatment, special compound water treatment, etc., can solve problems such as difficulty in effluent quality, large actual consumption of chemical methods, secondary pollution, etc.

Pending Publication Date: 2022-02-11
SHAANXI SCI TECH UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the microbial toxicity of antibiotics, it is difficult for the biological water treatment process with significant economic benefits to operate efficiently and stably in the pig wastewater treatment, resulting in the problem that the effluent water quality is difficult to meet the standard
Therefore, physical methods and chemical methods are widely used in the treatment of pig wastewater. Chemical methods require a lot of actual consumption, which is not only economical, but also may cause secondary pollutio

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
  • Method for purifying pig-breeding wastewater by manganese metal self-loaded biochar
  • Method for purifying pig-breeding wastewater by manganese metal self-loaded biochar
  • Method for purifying pig-breeding wastewater by manganese metal self-loaded biochar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: A. Preparation of metal manganese self-supporting biochar: After harvesting the corn stalks collected from manganese-rich soil and growing for 30 days, crush them to 2 cm, dry them in an oven at 80°C for 12 hours, and put them into a nitrogen atmosphere tube type Furnace, set the heating rate at 5°C / min, and treat at 400°C for 2 hours; cool to room temperature, grind to 60 mesh to obtain metal manganese self-supporting biochar; B, pretreatment of pig manure, solid-liquid separation: The solid-liquid separation of suspended solids is realized through 140-mesh screen filtration and plate-and-frame pressure filtration, and the solid-liquid separation of insoluble impurities is realized by adding 0.01% polyacrylamide flocculant to the filtrate, and finally the pig raising wastewater after the solid matter is separated C, deployment of pig raising wastewater: add metal manganese self-loaded biochar to the pig raising wastewater after separating solid matter in a ra...

Embodiment 2

[0025] Example 2: A. Preparation of metal manganese self-supporting biochar: After harvesting the corn stalks collected from manganese-rich soil and growing for 30 days, crush them to 2 cm, dry them in an oven at 80°C for 12 hours, and put them into a nitrogen atmosphere tube type Furnace, set the heating rate at 5°C / min, and treat at 400°C for 2 hours; cool to room temperature, grind to 60 mesh to obtain metal manganese self-supporting biochar; B, pretreatment of pig manure, solid-liquid separation: The solid-liquid separation of suspended solids is realized through 140-mesh screen filtration and plate-and-frame pressure filtration, and the solid-liquid separation of insoluble impurities is realized by adding 0.01% polyacrylamide flocculant to the filtrate, and finally the pig raising wastewater after the solid matter is separated C, deployment of pig raising wastewater: add metal manganese self-loaded biochar to the pig raising wastewater after separating solid matter in a ra...

Embodiment 3

[0026]Example 3: A. Preparation of metal manganese self-supporting biochar: After harvesting the corn stalks collected from manganese-rich soil and growing for 30 days, crush them to 2 cm, dry them in an oven at 80°C for 12 hours, and put them into a nitrogen atmosphere tube type Furnace, set the heating rate at 5°C / min, and treat at 400°C for 2 hours; cool to room temperature, grind to 60 mesh to obtain metal manganese self-supporting biochar; B, pretreatment of pig manure, solid-liquid separation: The solid-liquid separation of suspended solids is realized through 140-mesh screen filtration and plate-and-frame pressure filtration, and the solid-liquid separation of insoluble impurities is realized by adding 0.01% polyacrylamide flocculant to the filtrate, and finally the pig raising wastewater after the solid matter is separated C, deployment of pig raising wastewater: add metal manganese self-supporting biochar to the pig raising wastewater after separating solid matter in a...

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 a method for purifying pig-breeding wastewater by using manganese metal self-loaded biochar. The method comprises the following steps: preparing manganese metal self-loaded biochar; carrying out pretreatment and solid-liquid separation of pig manure; blending pig-breeding wastewater; and purifying. The preparation of the manganese metal self-loaded biochar comprises the following steps: crushing corn straws harvested from manganese-rich soil, drying, carrying out high-temperature pyrolysis, cooling and grinding to obtain the manganese metal self-loaded biochar. In the step of blending pig-breeding wastewater, manganese metal self-loaded biochar is added into the pig-breeding wastewater from which solid substances are separated according to the weight ratio of (1: 500)-(1: 300); and in the purifying step, the water depth of the blended pig-breeding wastewater is maintained to be not more than 1.2 m, the water temperature is kept to be 10-55 DEG C, the speed is kept to be 100 r/min and the treatment time is kept to be 6-10 h. According to the method, the antibiotics and Cu<2+> in the pig-breeding wastewater can be efficiently, cheaply and synergistically removed, and the removal rates of the antibiotics and Cu<2+> are both greater than or equal to 90%.

Description

technical field [0001] The invention relates to a method for purifying pig raising wastewater, which belongs to the technical field of environmental protection, especially the technical field of wastewater treatment. Background technique [0002] After nearly 20 years of rapid development, my country has become the largest producer and consumer of meat, poultry, and eggs, with an annual output of about 3.8 billion tons of livestock and poultry manure. In order to accelerate the growth of livestock and poultry and reduce the occurrence of diseases, feed additives and antibiotics are widely used in the process of livestock and poultry breeding. In 2019, the "Report on the Use of Veterinary Antibiotics in China" released by the Ministry of Rural Agriculture mentioned that in 2019, 30,903.66 tons of veterinary antibiotics were used in China. Due to the limited absorption of livestock and poultry intestines, these antibiotics are usually excreted Into the breeding manure, result...

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): C02F9/04B01J20/20C02F103/20C02F1/28C02F1/72C02F101/20C02F101/30
CPCC02F9/00B01J20/20B01J20/02C02F2305/023C02F2103/20C02F1/283C02F1/72C02F1/001C02F1/56C02F2101/20C02F2101/30
Inventor 李琛党佩佩季晓晖张宇罗学刚高艳红郭少波
Owner SHAANXI SCI TECH UNIV
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