A kind of pectin dephosphorization agent prepared by utilizing waste water from orange petal decapsulation and its preparation method

Abstract

The invention belongs to the technical field of comprehensive utilization of waste water, and relates to a pectin dephosphorization agent and a preparation method prepared by utilizing the waste water from orange petal decapsulation as resources. The method comprises the following steps: A, filtering and purifying, filtering the waste water from orange petal decapsulation, removing impurities to obtain a pretreatment solution, B, separating pectin, performing deacidification and dealkali treatment on the pretreatment solution to obtain a pectin solution, and recovering Dilute acid and recover dilute alkali, C, pectin alkylation, add aldehyde to pectin solution, carry out aldol condensation reaction, obtain alkylated pectin solution, D, pectin surface grafting, after completing step C , Add vinyl monomer and catalyst to carry out polymerization reaction, E, concentrate and dry to get pectin phosphorus removal agent. The phosphorus removal agent of the invention has good effect and is easy to biodegrade, and the precipitated sludge in the phosphorus removal process can be used as an organic phosphorus fertilizer.

Description

technical field

[0001] The invention belongs to the technical field of comprehensive utilization of waste water, and relates to a pectin dephosphorization agent and a preparation method prepared by utilizing the waste water from orange petal decapsulation as resources. Background technique

[0002] China is the world's largest producer of citrus. During the 12th Five-Year Plan period, my country's citrus cultivation area and annual output have increased significantly, and it ranked first in the world in 2012. The country's citrus planting area reached 34.32 million mu, with a total output of more than 33 million. Ton. In addition to being eaten as a favorite fruit for consumers, citrus is processed into a large number of products such as citrus juice, citrus wine, and canned orange petals. With the development of science and technology, my country’s citrus production technology and equipment have reached the international advanced level. The world’s canned citrus 80% of the t...