Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Treatment method of papermaking wastewater

A papermaking wastewater and treatment method technology, applied in the field of papermaking industry, can solve the problems of high cost, low recycling rate, and large residual amount of toxic and harmful substances, and achieve the effect of reducing COD and BOD values ​​and realizing maximum utilization

Inactive Publication Date: 2017-10-13
ANHUI BILUN DOMESTIC PAPER CO LTD
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing waste water treatment method for papermaking has high cost, large residual amount of toxic and harmful substances, and low recycling rate

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for treating papermaking wastewater, comprising the steps of:

[0020] (1) Cultivate microbial cells

[0021] Inoculate the mixed strains on the prepared medium, shake and culture at 28°C for 30 hours, and culture at 20°C for 20 hours, pour the culture solution into a centrifuge tube, and centrifuge at 4500 rpm for 8 minutes , remove the supernatant, wash the residue twice with PBS buffer, collect the microbial cells and store them at 5°C for later use. The content of each component of the medium is: beef extract 1.5g / L, glucose 1.0g / L, tryptone 4.5g / L, yeast powder 4.0g / L, sodium chloride 0.5g / L, and the balance is a universal carrier;

[0022] (2) Enhanced aerobic granular sludge

[0023] Disperse the cultured microbial cells in a glucose solution with a concentration of 5g / L according to the volume ratio of 1:1000, and spread them on the dry aerobic granular sludge. Rotate the culture for 20 hours, adjust the pH value of the papermaking wastewater to 6.8...

Embodiment 2

[0030] A method for treating papermaking wastewater, comprising the steps of:

[0031] (1) Cultivate microbial cells

[0032] Inoculate the mixed strains on the prepared medium, shake and culture at 30°C for 33 hours, and culture at 23°C for 22 hours, pour the culture solution into a centrifuge tube, and centrifuge at 4800 rpm for 9 minutes , remove the supernatant, wash the residue twice with PBS buffer, collect the microbial cells and store them at 6°C for later use. The content of each component of the medium is: beef extract 1.7g / L, glucose 1.2g / L, tryptone 5.0g / L, yeast powder 4.5g / L, sodium chloride 0.7g / L, and the balance is a universal carrier;

[0033] (2) Enhanced aerobic granular sludge

[0034] Disperse the cultured microbial cells in a glucose solution with a concentration of 6g / L according to the volume ratio of 1:1000, and spread them on the dry aerobic granular sludge. Rotate the culture for 22 hours, adjust the pH value of the papermaking wastewater to 6.9...

Embodiment 3

[0041] A method for treating papermaking wastewater, comprising the steps of:

[0042] (1) Cultivate microbial cells

[0043]Inoculate the mixed strains on the prepared culture medium, culture with shaking at 32°C for 36 hours, and culture at 25°C for 24 hours, pour the culture solution into a centrifuge tube, and centrifuge at 5000 rpm for 10 minutes , remove the supernatant, wash the residue with PBS buffer three times, collect the microbial cells and store them at 8°C for later use. The content of each component of the medium is: beef extract 2.0g / L, glucose 1.5g / L, tryptone 5.5g / L, yeast powder 5.0g / L, sodium chloride 1.0g / L, and the balance is a universal carrier;

[0044] (2) Enhanced aerobic granular sludge

[0045] Disperse the cultured microbial cells in a glucose solution with a concentration of 7g / L according to the volume ratio of 1:1000, and spread them on the dry aerobic granular sludge. Rotate culture for 24 hours, adjust the pH value of the papermaking wast...

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 relates to the technical field of papermaking industry, and discloses a treatment method of papermaking wastewater. The treatment method comprises the following steps of (1) culturing of microorganism bacteria: building dominant bacteria according to the degrading characteristics of the microorganism bacteria, and effectively utilizing the treatment characteristic of the free bacteria flora on the wastewater; (2) strengthening of aerobic granular sludge: strengthening the aerobic granular sludge by the built dominant bacteria, optimizing the treatment capacity of the aerobic granular sludge on the papermaking wastewater, effectively degrading and converting the multi-chloride organic matter and harmful inorganic compound in the chloride-containing bleaching wastewater in the paper pulp, and reducing the COD (chemical oxygen demand) and BOD (biological oxygen demand) values in the wastewater; (3) preparing of biogas by wastes: further biologically treating the papermaking wastes, and preparing the biogas by the treated wastes according to certain ratio and conditions, so as to realize the maximum utilization of resources.

Description

technical field [0001] The invention belongs to the technical field of papermaking industry, and in particular relates to a treatment method for papermaking wastewater. Background technique [0002] The papermaking industry has high energy consumption and material consumption, and is also very serious to environmental pollution. Among them, the SS and COD concentrations in wastewater are high, which bring great harm to the environment and human health. Papermaking industrial wastewater is a kind of difficult-to-treat organic wastewater with large water volume, high chroma, high content of suspended solids, high concentration of organic matter and complex components. There are three main sources of papermaking wastewater: pulping waste liquid, mid-stage water, and paper machine white water: pulping is to separate the fibers in plant raw materials, make pulp, and then bleach it; papermaking is to dilute and shape the pulp , pressed, dried, and made into paper. Both processes...

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): C02F9/14C02F11/04C12N1/20C12P5/02C02F103/28C12R1/40C12R1/01
CPCC02F1/001C02F1/5245C02F1/66C02F3/12C02F3/34C02F9/00C02F11/04C02F2001/007C02F2103/28C02F2209/08C02F2303/10C12N1/20C12P5/023Y02E50/30
Inventor 许亦南
Owner ANHUI BILUN DOMESTIC PAPER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com