Structural filter core for removing benzene from drinking water and preparation method thereof

Abstract

The invention discloses structural filter cores and specifically relates to a structural filter core for removing benzene from drinking water and a preparation method thereof. In the preparation process of the structural filter core, a certain amount of 180-mesh bentonite is weighed according to ratio of raw materials, sodium sulfide is added in the bentonite, and activation is carried out for 120-240min at the temperature of 120-180 DEG C; the activated mixture is mixed with polyvinyl chloride, a certain amount of azodicarboxylate isopropyl is then added and mixed to be even; and the mixture is put in a columnar mold, sintered at the temperature of 320-400 DEG C and molded after about 210-300min, and demolded till being cooled by airing, and then, the columnar filter core with the pore diameter of 3mm to 5mm and the porosity factor of 30% to 40% is formed. The structural filter core not only purifies the drinking water, but also avoids the injury to human bodies arising from excessive benzene in the drinking water, thereby being very applicable to the treatment of drinking water at home terminals. Proved by test, the structural filter core can have a ratio of over 99.9% in the removal of the benzene in the drinking water.

Description

technical field

[0001] The invention relates to a structural filter element for removing benzene in drinking water and a preparation method thereof, relates to the removal of benzene in drinking water, and belongs to the technical field of drinking water purification treatment. Background technique

[0002] Benzene is a carcinogen with varying degrees of toxicity to the human body and aquatic organisms; inhalation of high-soluble benzene in a short period of time can cause anesthesia of the central nervous system, and mild cases may cause dizziness, headache, nausea, chest tightness, and fatigue , confusion, severe cases can cause coma and death due to respiratory and circulatory failure; when the benzene content reaches a certain concentration, people may have neurasthenia-like symptoms such as headache, insomnia, listlessness, and memory loss; benzene compounds have been approved by the World Health Organization Determined as a strong carcinogen; the country has restricted...