Desiliconization agent, preparation method and application thereof

A technology of medicament and polyaluminium chloride, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of low silicon removal efficiency and affecting water hardness indicators, etc. Achieve good research prospects and application value, fast speed, and obvious settlement characteristics

Active Publication Date: 2022-07-29
神美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Therefore, the present invention provides a silicon removal agent, its preparation method and its application to overcome the problems of low silicon removal efficiency and affecting water hardness indicators in the prior art.

Method used

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  • Desiliconization agent, preparation method and application thereof
  • Desiliconization agent, preparation method and application thereof
  • Desiliconization agent, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present embodiment is a silicon removal agent CG-1, which is composed of the following components by weight: 75 parts of polyaluminum chloride, 12 parts of sodium metaaluminate, 6 parts of polyaluminum sulfate, 5 parts of polyferric sulfate, activated alumina 2 servings. The raw materials are weighed, ground, stirred and thoroughly mixed to obtain.

[0034] An oilfield in Dongying, Shandong carried out advanced treatment of heavy oil sewage, and reused thermal recovery boilers after reaching the standard. According to the Design Specification for Feed Water Treatment of Steam Generators" and SY 5854-2012 "Safety Specifications for Wet Steam Generators for Oil Fields", it clearly stipulates the silicate content (in terms of SiO) in the boiler incoming water. 2 meter) can not exceed 50mg / L. The silicon content of the sewage is seriously exceeding the standard.

[0035] The silicon-containing sewage was treated with the silicon-removing agent CG-1 prepared in this e...

Embodiment 2

[0038] The present embodiment is a silicon removal agent CG-2, which is composed of the following components by weight: 73 parts of polyaluminum chloride, 14 parts of sodium metaaluminate, 5 parts of polyaluminum sulfate, 6 parts of polyferric sulfate, activated alumina 2 servings. The raw materials are weighed in fixed mass fractions, ground, stirred and thoroughly mixed to obtain the product. The same silicon-containing sewage as in Example 1 was treated with the silicon-removing agent, and the treatment method was the same as that in Example 1. The results are shown in Table 1.

Embodiment 3

[0040] The present embodiment is a silicon removing agent CG-3, which is composed of the following components by weight: 74 parts of polyaluminum chloride, 12 parts of sodium metaaluminate, 8 parts of polyaluminum sulfate, 5 parts of polyferric sulfate, and activated alumina 1 serving. The raw materials are weighed in fixed mass fractions, ground, stirred and thoroughly mixed to obtain the product. The same silicon-containing sewage as in Example 1 was treated with the silicon-removing agent, and the treatment method was the same as that in Example 1. The results are shown in Table 1.

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Abstract

The invention provides a silicon-removing agent, a preparation method and an application thereof, belonging to the technical field of silicon-containing sewage treatment. The silicon removing agent includes the following components by weight: 73-77 parts of polyaluminum chloride, 10-14 parts of sodium metaaluminate, 4-8 parts of polyaluminum sulfate, 3-7 parts of polyferric sulfate, activated alumina 1‑3 servings. After the silicon-containing sewage is treated with the silicon-removing agent of the invention, the soluble silicon in the sewage is reduced to a certain extent, the recycling of sewage is not affected, nearly zero discharge is achieved, and multiple functions such as silicon-removing, coagulation, and turbidity removal are achieved. The silicon removing agent of the invention has high purity, less impurities, less dosage, low sludge amount, high silicon removing efficiency, is not affected by changes in sewage water quality, has high running stability, low running cost, and is safe and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a silicon removing agent, a preparation method and an application thereof. Background technique [0002] In the field of chemical industry, sewage recycling and reuse has become the trend of industrial water use, which can improve the pretreatment of influent water quality, remove or reduce suspended solids, colloids and ions in water, and meet water requirements. Among them, the coal chemical industry itself brings a high content of soluble silicon to the sewage, which brings a serious burden to the reverse osmosis system in the later stage. a lot of difficulty. In the field of oil exploitation, in the process of wastewater reuse boiler, SiO in heavy oil wastewater 2 It is easy to form dense and hard silicate scale in places with high heat load or in furnace tubes with poor water circulation, which seriously affects the heat transfer efficiency and safe op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/60C02F1/52
CPCC02F1/60C02F1/5245
Inventor 郑搏英朱希坤石伟杰柯建怡丁海静张襄张亮亮崔秀菊何永峰李佩鲜
Owner 神美科技有限公司
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