A New Bleaching Method for Straw

Abstract

The invention provides a new method for bleaching straw weaving, which belongs to the technical field of straw weaving bleaching and dyeing, and comprises the following steps: S1, activation pretreatment: adding straw weaving to a reactor, then adding an aqueous solution of surfactant I, and adjusting the pH of the solution to 4.5- 5.5, soaking activation pretreatment after heating up; S2, soaking and cleaning with water; S3, bleaching treatment: soak the straw weaving in the bleach solution, adjust the pH of the solution to 10-12, and perform a bleaching treatment after heating up; adjust the pH of the solution to 9 with inorganic alkali ~10, carry out secondary bleaching treatment; wherein, the bleaching agent solution is prepared from a composite hydrogen peroxide stabilizer, surfactant II, water and hydrogen peroxide; S4, add water to soak and wash several times until the hydrogen peroxide is detected to be qualified, take out The straw is dried to obtain the bleached straw. The method reduces the sewage treatment cost, is convenient to operate and easy to control, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of straw weaving bleaching and dyeing, and in particular relates to a new bleaching treatment method for straw weaving. Background technique [0002] Straw weaving is a traditional folk handicraft, which is made of various flexible herbs (such as wheat straw, cattail grass, corn husk, reed grass, yellow grass, sage grass, mat grass, golden silk grass, asparagus grass, rush grass , Kuai grass, recommended grass, bamboo shell, Ruo shell, straw, rough, etc.) are handicrafts made from raw materials. [0003] In order to increase the added value of straw weaving crafts, it is particularly important to bleach and dye straw weaving. Because the traditional bleaching and dyeing process of straw mainly uses chemicals containing phosphorus and sulfur, the bleaching and dyeing process is cumbersome, time-consuming, labor-intensive, and water consumption is high; the total phosphorus content in the production sewage is...

AI Technical Summary

Problems solved by technology

Because the traditional bleaching and dyeing process of straw mainly uses chemicals containing phosphorus and sulfur, the bleaching and dyeing process is cumbersome, time-consuming, labor-intensive, and water consumption is high; the total phosphorus content in the production sewage is as high as 800mg / L, and the sulfide content is as high as 300mg / L, this will increase the input cost of sewage treatment, and the bleached and dyed straw will affect the sales and application fields of the product due to the residue of chemicals such as sodium hydrochloride

At the same time, due to the large water consumption of straw bleaching and dyeing, the large fluctuation of water quality and quantity, and the high pollution load of wastewater, especially the high content of COD, BOD, SS, and total phosphorus, it seriously pollutes the environment

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