Defluorination adsorbent as well as preparation method and application thereof

A technology of adsorbent and raw material, applied in the field of environmentally friendly adsorbent for treating fluoride ions in industrial wastewater and its preparation field, can solve the problems of small pH application range, small saturated adsorption capacity, small adsorption capacity, etc., and achieve simple preparation method, fluorine ion Large adsorption capacity and high fluorine removal rate
CN103071450BActive Publication Date: 2014-11-12HOHAI UNIV
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2014-11-12

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a defluorination adsorbent, which is prepared by the following raw materials: general silicate cement, water and aluminum sulfate at the weight ratio from 5:15:3 to 5:15:4. The invention further discloses a preparation method for the defluorination adsorbent and an application of the defluorination adsorbent to treatment of fluorine ions in industrial wastewater. The defluorination adsorbent prepared by utilizing waste cement paste has the characteristics of being environment-friendly, harmless, low in cost, simple to prepare, high in fluorine adsorption capacity and high in defluorination rate; the preparation method is simple; the saturated adsorption capacity of the defluorination adsorbent on fluorine in water can reach up to 49.3 mg / g and is much higher than that of other adsorption materials; and the treated fluorine-containing industrial wastewater can meet the national comprehensive sewage emission standards.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of water treatment, and in particular relates to an environmentally friendly adsorbent for treating fluorine ions in industrial waste water, a preparation method and application thereof. Background technique

[0002] Fluorine is one of the essential trace elements for human body. Trace amounts of fluorine can promote children's growth and development and prevent dental caries. The daily intake of fluoride for adults is generally 1.0~1.5mg, excessive intake will endanger health. Fluorine in the human body comes directly from drinking water, food and air. Orally ingested fluoride is absorbed by the gastrointestinal tract, and the absorption rate is about 80% to 97%. Previous studies on the effects of fluorosis mostly focused on the damage to bone tissue. In recent years, it has been found that fluorine has varying degrees of damage to non-bone tissues such as the liver, kidneys, cardiovascular system, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More