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Preparation method of ferrum-titanium-manganese ternary compound arsenic removal adsorbent

A ternary composite, adsorbent technology, applied in chemical instruments and methods, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of increasing water treatment costs and increasing the complexity of water treatment operations, etc. To achieve the effect of good removal performance, excellent water purification performance, and environmentally friendly materials

Inactive Publication Date: 2018-03-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the current arsenic removal adsorption material requires the cooperation of a pre-oxidation treatment unit, which not only increases the cost of water treatment, but also increases the complexity of water treatment operation, and provides an iron-titanium-manganese ternary compound arsenic removal The preparation method of adsorbent

Method used

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  • Preparation method of ferrum-titanium-manganese ternary compound arsenic removal adsorbent

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specific Embodiment approach 1

[0030] Specific implementation mode 1: This implementation mode is a preparation method of an iron-titanium-manganese ternary composite arsenic removal adsorbent, which is specifically carried out according to the following steps:

[0031] Dissolve iron salt, titanium salt and manganese salt in water and mix to obtain mixed solution A; dissolve soluble permanganate and alkaline compound in water and mix together to obtain mixed solution B; add mixed solution B to mixed solution A , to obtain a mixed solution C with a pH of 5-9, continue to stir the mixed solution C for 5min-4h, then age for 1h-12h, discard the supernatant, keep the lower precipitate, wash the precipitate with water until no anions are detected in the lotion , suction-filtering the washed precipitate to obtain a filter cake, and then drying the filter cake at a temperature of 25° C. to 100° C. to obtain an iron-titanium-manganese ternary composite adsorbent for removing arsenic;

[0032] In this embodiment, the...

specific Embodiment approach 2

[0040] Embodiment 2: This embodiment differs from Embodiment 1 in that the soluble ferrous salt is one or a mixture of ferrous chloride and ferrous sulfate. Others are the same as the first embodiment.

specific Embodiment approach 3

[0041] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the soluble titanous salt is one or a mixture of titanous chloride and titanous sulfate. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to a preparation method of a ferrum-titanium-manganese ternary compound arsenic removal adsorbent and relates to a preparation method of an arsenic removal adsorbent, aiming at solving the technical problems that not only is water treatment cost increased, but also the complexity of water treatment operation is increased because a current arsenic removal adsorbing material needs to cooperate with a pre-oxidation treatment unit. According to the preparation method, ferric salt, titanium salt, manganese salt and an alkali compound are dissolved in water and are mixed, and then the mixture is aged, washed and dried. The adsorbent has relatively large surface area, is good in arsenic removal performance, and has an excellent removal capacity for lead, phosphorus, cadmiumand other heavy metal ions in water; and the material is simple in synthesis process, economical and low-cost in material, and friendly to material environment, and can be used for purification treatment of underground water, surface water and industrial waste water. The preparation method is applied to the field of water treatment.

Description

technical field [0001] The invention relates to a preparation method of an adsorbent for removing arsenic. Background technique [0002] Arsenic (As) is a relatively rare but ubiquitous heavy metal-like element in the natural environment. Due to its high toxicity and carcinogenicity, arsenic has attracted worldwide attention. Arsenic pollution in natural water mainly comes from natural migration and human activities, resulting in millions of people being exposed to arsenic hazards, such as chronic arsenic poisoning and a series of other cancer problems. In many countries, such as Bangladesh, India, China, Chile, and Vietnam, the arsenic content in groundwater reaches 100-2000 μg / L, and the arsenic content in industrial wastewater is as high as ppm (mg / L). The upper limits of the arsenic content in the formulated water quality standards for drinking water and industrial wastewater discharge are 10 μg / L and 100 μg / L, respectively. In addition, in natural water bodies, As ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/02B01J20/30C02F1/28C02F1/72C02F101/10
CPCB01J20/0229B01J20/0211B01J20/0222B01J20/06B01J2220/42B01J2220/4806C02F1/281C02F1/72C02F1/725C02F2101/103
Inventor 马军张伟
Owner HARBIN INST OF TECH
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