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Method for treating dye wastewater by using biomass and fungi

A dye wastewater and biomass technology, applied in biological water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of complex treatment process, unsatisfactory treatment effect, high cost, etc., and achieve simple operation , reduce the amount of use, reduce the effect of content

Pending Publication Date: 2022-02-01
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the above-mentioned technical treatment still has the problems of complex treatment process, high cost, and unsatisfactory treatment effect, and the treated waste still needs further treatment.

Method used

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  • Method for treating dye wastewater by using biomass and fungi
  • Method for treating dye wastewater by using biomass and fungi
  • Method for treating dye wastewater by using biomass and fungi

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Pretreatment of waste straw

[0045] In order to increase the contact area of ​​straw to dye wastewater and improve the adsorption efficiency, and at the same time facilitate the filtration and separation of straw and dye wastewater, the straw needs to be screened and pretreated. The specific process is as follows: use a guillotine to cut wheat straw, peanut shells, and corn straw into specifications It is a small section of 1-3cm, and it is ready to use after drying naturally outside.

Embodiment 2

[0046] Embodiment 2: Screening, purification, and rejuvenation of Mypopora haemorrhoids, Pleurotus ostreatus, and Lentinus edodes strains

[0047] Separation and screening were carried out by tissue imprinting method, and the separation and screening method was as follows: put rotten wood, fruiting bodies of Pleurotus ostreatus and fruiting bodies of Lentinus edodes in a beaker, and soak them in sterile water for 2 hours. The liquid samples were then diluted into different gradients and plated on PDA (20% potato extract, 2% glucose, 2% agar) medium containing 4% 2,6-dimethoxybenzene. Observe the growth of the colony on the medium every day and whether there is a red discoloration circle around the colony, select the strains with a red discoloration circle around the colony and transfer them to a new PDA medium, and finally obtain the purified strain. The purified strains were inoculated on the PDA slant and stored in a refrigerator at 4°C for subsequent use.

[0048] In order...

Embodiment 3

[0049] Example 3: Adsorption of wheat stalks, peanut shells, and corn stalks to dye wastewater

[0050] Compared with the traditional physical method, chemical method and biochemical method to treat dye wastewater, the biological method adopted in this technology uses straw waste as the adsorbent, and its adsorption efficiency reaches about 90%, realizing the concept of "treating waste with waste" . On this basis, the growth and metabolism of fungi are used to degrade the pollutants in the dye wastewater, and the effective removal is truly realized without secondary pollution. Increase farmers' income while reducing corporate governance costs.

[0051] Effect of dye wastewater concentration on adsorption effect: adjust the concentration of dye wastewater to 10, 50, 100, 200, 400mgL respectively -1 , add 2gL -1 Add wheat stalks, peanut shells, and corn stalks to a centrifuge tube containing 50 ml of dye wastewater. After shaking at natural pH and room temperature for 12 hou...

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Abstract

The invention discloses a method for treating dye wastewater by using biomass and fungi. The method comprises the steps of biomass pretreatment, adsorption, recovery and separation, solid state fermentation and the like. According to the method disclosed by the invention, a novel dye wastewater treatment method is designed by utilizing agricultural waste straws and a fungus solid-state fermentation technology, so that dye molecules are quickly attached to the surfaces of the straws through an adsorption effect, and the content of dye components in the wastewater is obviously reduced. Compared with an activated carbon adsorbent, the waste straw is lower in price and wide in source; and the cultured white-rot fungi have very good degradation and removal effects on dye pollutants, straws adsorbing dyes are treated by a fungus solid fermentation technology, and the use amount of chemical agents and the pollution of residual agents to the environment are reduced. The whole method is simple to operate, low in cost and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of dye wastewater treatment, in particular to a method for treating dye wastewater by using waste biomass and fungal solid fermentation. Background technique [0002] With the increase of dye production in our country year by year, a large amount of dye wastewater that is harmful to the environment and human body has been produced, with high organic content, complex components and biological toxicity. In view of the great harm of dye wastewater, it is extremely important to discharge dye wastewater up to the standard. At present, the commonly used adsorption method, microbial decomposition method, photocatalytic method, ozone method, etc. are used to treat dye wastewater. However, due to problems such as cost and secondary pollution, there are limitations in practical applications. [0003] The existing treatment of dye wastewater is mainly classified into physical methods, chemical methods, and biological...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F3/34C02F1/28
CPCC02F3/347C02F1/286
Inventor 刘家扬关健王滨
Owner NANJING UNIV OF TECH
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