Sewage treatment biological filter material based on low-voltage electric porcelain waste and preparation method thereof

Abstract

The invention specifically relates to a sewage treatment biological filter material based on low-voltage electric porcelain waste and a preparation method of the sewage treatment biological filter material. According to the technical scheme, the method includes the first step of using 40.0-60.0 wt% of the low-voltage electric porcelain waste, 15.0-25.0 wt% of coal ash, 10.0-20.0 wt% of pyrophyllite and 5.0-15.0 wt% of clay as raw materials, adding 500-1000 L of pore-forming agents into per ton of the raw materials, conducting mixing, further adding 2.0-5.0 wt% of binding agents and 15.0-25.0 wt% of water, and then conducting pelleting forming, and the second step of conducting drying for 24-48 hours at the temperature ranging from 80 DEG C to 140 DEG C, conducting heat preservation for 2-12 hours at the temperature ranging from 800 DEG C to 1200 DEG C, and finally obtaining the sewage treatment biological filter material based on the low-voltage electric porcelain waste. The method has the advantages of being simple in process, capable of saving resources and friendly to the environment. Products manufactured through the method are large in specific surface area, high in mechanical strength, good in wear resistance and high in apparent porosity.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment biological filter material. In particular, it relates to a biological filter material for sewage treatment based on low-voltage electric porcelain waste and a preparation method thereof. Background technique [0002] Low-voltage electrical ceramics are commonly used electrical ceramics and are widely used in low-voltage power transmission and transformation lines. The use environment of low-voltage electrical porcelain materials is harsh, resulting in very strict production processes. Once tiny cracks appear or the content of impurity elements exceeds the standard during production or use, they will be eliminated as low-voltage electrical ceramic waste. Every year, millions of tons of low-voltage electrical ceramic waste are eliminated from production lines and low-voltage transmission and transformation lines in my country, piling up like mountains, polluting the environment and wasting...

AI Technical Summary

Problems solved by technology

Moreover, the sewage treatment filter material prepared by the existing technology shows a series of technical defects such as insufficient strength, poor acid and alkali resistance, difficult regeneration and poor adsorption capacity. Therefore, a biological filter material with excellent comprehensive performance has been researched and developed to become a sewage treatment technology. one of the keys

[0004] "A Sewage Treatment Filter Material Using Riverside Silt as Raw Material and Its Manufacturing Method" (CN 101711931A) discloses a method for preparing biological filter material from riverside sludge, fly ash and steelmaking red mud. The purpose of waste treatment, but there are still defects: (1) The porosity is low, the average pore size is small, and the space for accommodating bacteria is small; (2) The density and the solubility of hydrochloric acid are too high, and the scouring pressure caused by the filter large and limits its useful life

"A composition for making filter ceramsite and a method for making filter ceramsite" (CN 103570373A) discloses a method for preparing filter ceramsite from shale, bauxite and iron ore. The filter material ceramsite produced by this method has high strength and strong adsorption capacity, but it has disadvantages: (1) the raw material is natural minerals, which consumes a lot of natural resources; (2) the apparent density is too high, and the load on the filter is too high (3) The specific surface area is small, and the space for the growth of bacteria is small