Inorganic coagulant and preparation method thereof

An inorganic coagulant and steel slag technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water pollutants, etc., can solve the problems of unsatisfactory removal effect, chromaticity, general removal effect of organic polymer compounds, high cost

Inactive Publication Date: 2018-04-20
BAOTOU IRON & STEEL GRP
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  • Abstract
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Problems solved by technology

For example, polyaluminum chloride (PAC) and polyferric chloride (PFC), which are widely used, are generally prepared with raw materials such as aluminum hydroxide and bauxite, and the cost is relatively high
In addition, at present, this kind of coagulant has a general effect on the removal of chroma and organic polymer compounds in wastewater, especially for heavy metal ions such as Pb and Cr. 6+ The removal effect of etc. is not ideal

Method used

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  • Inorganic coagulant and preparation method thereof

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Embodiment Construction

[0024] In order to have a clearer understanding of the above objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0025] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0026] Such as figure 1 Shown, according to the inorganic coagulant of an embodiment that the present invention proposes and preparation method thereof, comprise the steps:

[0027] Step 10: Pretreatment of raw materials: crushin...

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Abstract

The invention provides an inorganic coagulant and a preparation method thereof. The inorganic coagulant is prepared from major raw materials including steel slag and pulverized fuel ash according to amass ratio of 8:2. The preparation method mainly comprises the following steps of raw material pretreatment, acidification treatment, alkalization treatment, mixing and drying. Through the technicalscheme, a large number of solid wastes are utilized; the environment is protected; the raw material sources are enlarged; the material cost is reduced; through acidification treatment and alkalizationtreatment, a multicomponent iron salt and aluminum salt mixed coagulant is obtained; the respective advantages of two coagulants are fully realized; the flocculation effect is improved; high adsorption capacity is realized, so that a better removal effect is achieved on hazardous substances such as chroma, macromolecular organic compounds and heavy metal ions.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to an inorganic coagulant and a preparation method thereof. Background technique [0002] Coagulants are substances that can bind and aggregate colloidal particles in water during water treatment. Generally, coagulants are divided into two categories: organic coagulants and inorganic coagulants. The coagulation process is the process of adding chemicals in the process of water treatment to make impurities coagulate and flocculate. It is mainly used for purification of drinking water and treatment of industrial wastewater. [0003] At present, inorganic coagulants for water treatment are mainly aluminum salt and iron salt coagulants, which play an important role in sewage treatment. For example, polyaluminum chloride (PAC) and polyferric chloride (PFC), which are widely used, are generally prepared from raw materials such as aluminum hydroxide and alumina, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F101/20C02F101/22C02F101/32C02F101/34C02F101/38
CPCC02F1/5236C02F2101/20C02F2101/22C02F2101/327C02F2101/345C02F2101/38
Inventor 田颖王雨
Owner BAOTOU IRON & STEEL GRP
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