Preparation method for Trichoderma harzianum degrading p-toluenesulfonic acid and industrial waste water treatment method

Abstract

The invention discloses a preparation method for Trichoderma harzianum degrading p-toluenesulfonic acid. A solid fermentation method is used for preparing the Trichoderma harzianum, and the preparation method includes the steps that straw powder is added into a fermentation vat, water and a nitrogen source are added and stirred sufficiently and evenly, and the mixture is inoculated with Trichoderma harzianum strains and make full contact with the straw powder; fermentation is carried out under the natural condition, and the temperature of a fermentation substrate is controlled not to exceed 50 DEG C. When laccase activity in the substrate is not increased, fermentation is stopped, and the obtained fermentation substrate is the Trichoderma harzianum used for treating industrial waste water. An industrial waste water treatment method with the Trichoderma harzianum includes the step that the additive amount of the Trichoderma harzianum in industrial waste water accounts for 0.1-5% of the waste water amount; the pH value of the industrial waste water is 3.0-6.0, the treatment temperature is 20 DEG C-50 DEG C, and the treatment time is 2-10 h.

Description

Technical field [0001] The invention relates to the fields of environmental protection and biochemical industry, in particular to a method for preparing and treating industrial wastewater by degrading Trichoderma harzianum p-toluenesulfonate. Background technique [0002] P-toluenesulfonic acid is widely used as a stabilizer for the synthesis of medicines, pesticides, polymerization reactions and a catalyst for organic synthesis (esters, etc.); as an intermediate for medicines and coatings and as a resin curing agent, as well as an intermediate for electroplating. P-toluenesulfonic acid has a strong irritating effect on the eyes, skin, mucous membranes and upper respiratory tract; after inhalation, it can cause spasm, edema of the larynx and bronchi, chemical pneumonia or pulmonary edema. Poisoning manifestations include burning sensation, cough, wheezing, and laryngitis , Shortness of breath, headache, nausea and vomiting. The acute toxicity test shows that the LD50 of p-toluen...

AI Technical Summary

Problems solved by technology

Use other chemical, photochemical and physical chemical means to solve the pollution of p-toluenesulfonic acid, but this will cause secondary pollution or only transfer pollutants from one environmental system to another, such as photolysis and chemical oxidation, due to The excitation effect of light energy and chemical energy on the intermediate product makes the intermediate product sometimes more toxic than before treatment

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