Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of coagulant and its application

A coagulant and reaction solution technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc. The effect of energy consumption

Active Publication Date: 2016-08-24
重庆能兴科技发展有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many treatment methods, the treatment costs are often high, and some have secondary pollution problems

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of coagulant and its application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: a kind of preparation method of coagulant, comprises the steps:

[0027] (1) Accurately weigh aluminum hydroxide and sodium hydroxide at a mass ratio of 1.8:1 and place it in a reaction vessel; add a small amount of water to control the mass concentration of the sodium hydroxide solution to 50%; The temperature of the system was raised to slightly boiling; the complete reaction required 30 min;

[0028] (2) After the reaction solution in step (1) is cooled to room temperature, quickly add hydrochloric acid solution with a volume concentration of 19%, control the basicity of the reaction solution to 2.4, and stir rapidly to obtain a gel containing active aluminum hydroxide The mixed solution of polyaluminum chloride with high salinity;

[0029] (3) After the aluminum hydroxide gel-polyaluminum chloride mixed solution obtained in step (2) is mixed evenly, heat at 80°C for 0.5 hour; and age for three days to obtain a stable coagulant product.

Embodiment 2

[0030] Embodiment 2: a kind of preparation method of coagulant, comprises the steps:

[0031] (1) Accurately weigh aluminum hydroxide and sodium hydroxide at a mass ratio of 1.5:1 and place them in the reaction vessel; add a small amount of water to control the mass concentration of the sodium hydroxide solution to 60%; The temperature of the system was raised to slightly boiling; it took 25 min for complete reaction;

[0032] (2) After the reaction solution in step (1) is cooled to room temperature, quickly add hydrochloric acid solution with a volume concentration of 28%, control the basicity of the reaction solution to 2.7, and stir rapidly to obtain a gel containing active aluminum hydroxide The mixed solution of polyaluminum chloride with high salinity;

[0033] (3) After the aluminum hydroxide gel-polyaluminum chloride mixed solution obtained in step (2) is mixed evenly, heat at 60°C for 0.5 hour; and age for three days to obtain a stable coagulant product.

Embodiment 3

[0034] Embodiment 3: a kind of preparation method of coagulant, comprises the steps:

[0035] (1) Accurately weigh aluminum hydroxide and sodium hydroxide at a mass ratio of 1.8:1 and place it in the reaction vessel; add a small amount of water to control the mass concentration of the sodium hydroxide solution to 60%; The temperature of the system was raised to slightly boiling; it took 25 min for complete reaction;

[0036] (2) After the reaction solution in step (1) is cooled to room temperature, quickly add hydrochloric acid solution with a volume concentration of 19%, control the basicity of the reaction solution to 2.4, and stir rapidly to obtain a gel containing active aluminum hydroxide The mixed solution of polyaluminum chloride with high salinity;

[0037] (3) After the aluminum hydroxide gel-polyaluminum chloride mixed solution obtained in step (2) is mixed evenly, heat at 80°C for 1 hour; and age for three days to obtain a stable coagulant product.

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

PUM

No PUM Login to View More

Abstract

The invention discloses a method for preparing a coagulant and an application thereof. The method comprises the following steps: by taking industrial aluminium hydroxide as a main raw material, reacting with a sodium hydroxide solution under high temperature, cooling to room temperature, adding a hydrochloric acid solution into the reaction solution, controlling the basicity of the reaction solution to 2.4-2.7, and rapidly stirring to obtain an aluminium trichloride mixed solution with high basicity containing an active aluminium hydroxide gel; and heating and aging to obtain the coagulant after uniformly mixing the aluminium trichloride mixed solution with high basicity containing the active aluminium hydroxide gel. The invention also discloses an application of the coagulant prepared by the method for removing heavy metals in the water body. The preparation method provided by the invention is simple in process, low in energy consumption and small in device corrosion; and the obtained coagulant is good in stability without changing within 6 months, convenient to use and has a good removing effect on the heavy metals and the COD in the water body.

Description

technical field [0001] The invention belongs to the technical field of flocculant preparation, and relates to a preparation method and application of a coagulant, in particular to a preparation method and application of a coagulant for heavy metal treatment in water bodies. Background technique [0002] Coagulation is a widely used water treatment method, which has the advantages of high efficiency, low cost, and convenient use. Coagulant is the core of coagulation method, and its quality will largely determine the effect of water treatment. Coagulants are mainly divided into inorganic coagulants, organic flocculants, and microbial flocculants. The inorganic coagulants are divided into traditional inorganic coagulants and inorganic polymer coagulants. At present, the commonly used inorganic polymer coagulants are mainly polymeric aluminum salt coagulants and polymeric iron salt coagulants. [0003] Polyaluminum chloride is a widely used inorganic polymer coagulant. It ma...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/62
Inventor 郑怀礼王小平唐晓旻郑欣钰龚曼瑀周于皓徐先明赵纯张育新
Owner 重庆能兴科技发展有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com