Modified fly ash-based high-efficiency waste water treatment agent for landfill permeate and preparation method thereof

Abstract

The invention discloses a garbage permeate wastewater treatment agent based on modified fly ash and a preparation method. The composition comprises the following raw materials in parts by weight: fly ash fine powder 50-60, sodium bicarbonate 8-10, Polydimethyldiallyl ammonium chloride 11‑17, cationic polyacrylamide 9‑10, hydroxymethyl chitosan 10‑20, chitosan quaternary ammonium salt 10‑20, montmorillonite powder 20‑24, biological Sludge 6-10, magnetized tourmaline powder 12-15, basic alumina 8-10, loofah 40-50, appropriate amount of ethanol, appropriate amount of deionized water, appropriate amount of water. The present invention uses sodium bicarbonate to pretreat the coal ash powder, which improves the pore size and surface area ratio of the coal ash powder, and then further composites and modifies the activated composite powder to improve the adsorption efficiency. The present invention also realizes the coal ash powder The advantages of high-capacity, easy-to-separate, and easy-to-recover adsorbents.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a modified fly ash-based high-efficiency wastewater treatment agent for garbage permeate and a preparation method. Background technique [0002] With the rapid development of cities in our country, the output of garbage continues to increase. During the process of landfilling and stacking, due to the decomposition of organic matter inside the garbage or the combination of free water in the garbage, the garbage seepage is formed. The garbage seepage is a kind of high-concentration organic Wastewater, water quality and quantity are unstable, and the water contains a large amount of refractory substances, so the treatment of garbage permeate filtrate is very difficult. [0003] Fly ash is a pozzolanic-like moderating material formed after coal powder is burned at high temperature. It is rich in alumina, and there are a large number of active points such as aluminum an...

AI Technical Summary

Problems solved by technology

[0003] Fly ash is a pozzolanic-like moderating material formed after coal powder is burned at high temperature. It is rich in alumina, and there are a large number of active points such as aluminum and silicon in it, which can be combined with adsorbate through chemical bonds. At the same time, the structure of fly ash is very strong. Control, the specific surface area is large, so it has a certain adsorption performance, and sometimes can even replace activated carbon, silica gel, etc. Small size, low treatment efficiency, difficult solid-liquid separation in the later stage, easy to form industrial sludge, troublesome post-processing, non-reusable, poor selectivity, etc.