Poly ferrosilicium coagulant and preparation method thereof

A technology of coagulant and polysilicon ferrosilicon, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of complex preparation process, secondary pollution of the environment, and high production cost, and achieve low preparation cost, enhanced adaptability, and method simple effect

Active Publication Date: 2009-03-18
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the defects of poor adaptability to low temperature and low turbidity water quality, high production cost, complex preparation process and secondary pollution to the environment in the existing preparation of polyferrosilicon coagulant, and provides a polysilicon coagulant Iron coagulant and preparation method thereof

Method used

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  • Poly ferrosilicium coagulant and preparation method thereof
  • Poly ferrosilicium coagulant and preparation method thereof

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specific Embodiment approach 1

[0012] Specific embodiment 1: The polysilicon ferrosilicon coagulant of this embodiment is composed of 20%-60% water glass, 10%-30% dilute acid solution, 10%-50% ferrous sulfate and 1.5% by weight. ~10% sodium chlorate; the solute of the dilute acid solution is sulfuric acid, hydrochloric acid, phosphoric acid or acetic acid, and the concentration of the dilute acid solution is 20%-50%.

specific Embodiment approach 2

[0013] Specific embodiment two: the difference between this embodiment and the specific embodiment one is: the polysilicon ferrosilicon coagulant is composed of 30%-50% water glass, 15%-25% dilute acid solution, 20%- It is made of 40% ferrous sulfate and 3% to 8.5% sodium chlorate; the concentration of the dilute acid solution is 30% to 40%. Others are the same as the first embodiment.

specific Embodiment approach 3

[0014] Specific embodiment three: the difference between this embodiment and specific embodiment one is: polysilicon ferrosilicon coagulant is composed of 40% water glass, 20% dilute acid solution, 30% ferrous sulfate and 10% by weight. Made of sodium chlorate; the concentration of the dilute acid solution is 35%. Others are the same as the first embodiment.

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Abstract

The invention discloses a poly silicon iron coagulating agent and a preparation method thereof, relates to an inorganic polymer coagulating agent and a preparation method thereof and solves the disadvantages of poor adaptability to low temperature and low turbidity water quality, high production cost, complex preparation technique and secondary pollution to the environment in the existing preparation process of poly silicon iron coagulating agent. The poly silicon iron coagulating agent of the invention is made from soluble glass, soluzione leggermente acida, ferrous sulfate and sodium chlorate. The preparation method of the poly silicon iron is as follows: step 1. raw materials are weighted; step 2. the soluble glass is added into the soluzione leggermente acida and activated silicic acid is prepared after the reaction; 3. the ferrous sulfate and the sodium chlorate are added into the rest soluzione leggermente acida and then the activated silicic acid obtained in step 2 is added, thus obtaining the poly silicon iron coagulating agent. The poly silicon iron coagulating agent is applicable to low temperature and low turbidity water quality and has the advantages of low preparation cost, simple preparation method and no pollution during the preparation process.

Description

Technical field [0001] The invention relates to an inorganic polymer coagulant and a preparation method thereof. Background technique [0002] Chemical coagulation is one of the important unit operations of water treatment. Generally, the flocs formed by coagulation can be separated from water by processes such as precipitation, filtration or air flotation. As a unit operation, the efficiency of the coagulation operation will not only be affected by the pre-treatment, but also have a significant impact on the subsequent treatment. Coagulation technology is an economical and simple water treatment technology used to improve water quality treatment efficiency at home and abroad. One of the key issues of coagulation technology is the choice of coagulant. Among them, inorganic polymer coagulants have shown obvious advantages since they were developed in the 1960s. Compared with traditional flocculants, it has better performance and is cheaper than organic polymer flocculants. It is w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52
Inventor 于水利许霞
Owner HARBIN INST OF TECH
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