Purifying treatment agent for coal-washing wastewater and preparation method thereof

Abstract

The invention discloses a purifying treatment agent for coal-washing wastewater and a preparation method thereof. The purifying treatment agent is prepared from the following materials in parts by weight: 30-40 parts of sepiolite, 15-20 parts of montmorillonite, 10-15 parts of medical stone, 15-20 parts of polyacrylamide, 5-10 parts of sodium polyacrylate, 3-6 parts of aluminium polychlorid, 2-4 parts of sodium lignin sulfonate, 3-5 parts of alum powder, 6-9 parts of ferrous sulfate, 8-12 parts of guar gum powder, 5-10 parts of nano carbon, 4-8 parts of porous calcium phosphate, 10-15 parts of carboxymethyl chitosan, 5-10 parts of sodium alginate, 2-3 parts of span-80, 1-2 parts of sodium lauryl sulfate, 1-2 parts of stearic acid and 0.5-1 parts of gamma-aminopropyltriethoxysilane. The purifying treatment agent disclosed by the invention has the advantages that the flocculation effect is good, impurity particles in coal-washing water can be rapidly agglutinate and settled, simultaneously heavy-metal elements in the coal-washing water can be absorbed, the purifying effect is very obvious, the water purifying effect is 4-6 times of that of the common flocculating agent; and the used amount is less, the efficiency is high, the cost is low, the benefit is high, the complete environmental-friendly effect is achieved and the application prospect is wide.

Description

technical field [0001] The invention relates to a purification treatment agent for coal washing wastewater and a preparation method thereof, belonging to the technical field of flocculants. Background technique [0002] Coal washing wastewater is wastewater produced during raw coal washing. This type of wastewater has the characteristics of high suspended solids, fine solid particle size, and strong surface negative charge. . According to my country's environmental protection management requirements, coal washing wastewater must be treated to meet the requirement of suspended solids ≤ 300mg / L before it can be reused. At present, the treatment method of coal washing wastewater mostly adopts the method of flocculation and sedimentation. Although there are many types of flocculants in the market, most of them have problems such as large dosage, high cost, slow sedimentation speed, and unsatisfactory treatment effect. Contents of the invention [0003] The object of the pre...

AI Technical Summary

Problems solved by technology

Although there are many types of flocculants in the market, most of them have problems such as large dosage, high cost, slow sedimentation speed and unsatisfactory treatment effect.