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

Method for removing hardness in drinking water of surface water plant

A technology for drinking water and surface water, applied in descaling and water softening, water/sewage treatment, chemical instruments and methods, etc., can solve problems affecting water quality, impact, etc., and achieve the effect of simple and efficient methods

Pending Publication Date: 2021-12-07
宿迁市河海大学研究院
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The hardness of drinking water in existing surface water plants includes temporary hardness and permanent hardness, but some existing hardness removal methods or processes cannot completely remove the temporary hardness and permanent hardness of drinking water in surface water plants, which affects the quality of treated water quality, will have a bad effect on the human body

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for removing hardness in drinking water from a surface water plant, characterized in that the hardness in drinking water from a surface water plant includes temporary hardness and permanent hardness, and the temporary hardness removal method includes the following steps:

[0023] (1) Acidification step: adding hydrochloric acid to the raw water for acidification and stirring reaction, the reaction time is 1min, to obtain the first intermediate solution;

[0024] (2) Aeration step: carry out aeration treatment on the first intermediate solution, the aeration time is controlled at 8 minutes, remove the temporary hardness of the drinking water in the surface water plant, and obtain the second intermediate solution;

[0025] The permanent hardness removal method is as follows: the above-mentioned second intermediate solution is passed through an ion exchange device to remove the permanent hardness in the drinking water of a surface water plant, and the ion exchange ...

Embodiment 2

[0030] A method for removing hardness in drinking water from a surface water plant, characterized in that the hardness in drinking water from a surface water plant includes temporary hardness and permanent hardness, and the temporary hardness removal method includes the following steps:

[0031] (1) Acidification step: adding hydrochloric acid to the raw water for acidification and stirring reaction, the reaction time is 2min, to obtain the first intermediate solution;

[0032] (2) Aeration step: carry out aeration treatment on the first intermediate solution, the aeration time is controlled at 10 minutes, remove the temporary hardness of the drinking water in the surface water plant, and obtain the second intermediate solution;

[0033] The permanent hardness removal method is as follows: the above-mentioned second intermediate solution is passed through an ion exchange device to remove the permanent hardness in the drinking water of a surface water plant, and the ion exchange...

Embodiment 3

[0038] A method for removing hardness in drinking water from a surface water plant, characterized in that the hardness in drinking water from a surface water plant includes temporary hardness and permanent hardness, and the temporary hardness removal method includes the following steps:

[0039] (1) Acidification step: adding hydrochloric acid to the raw water for acidification and stirring reaction, the reaction time is 3min, to obtain the first intermediate solution;

[0040] (2) Aeration step: carry out aeration treatment on the first intermediate solution, the aeration time is controlled at 12 minutes, remove the temporary hardness of the drinking water in the surface water plant, and obtain the second intermediate solution;

[0041] The permanent hardness removal method is as follows: the above-mentioned second intermediate solution is passed through an ion exchange device to remove the permanent hardness in the drinking water of a surface water plant, and the ion exchange...

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 relates to the field of surface water plant drinking water treatment, in particular to a method for removing hardness in surface water plant drinking water, the hardness in the surface water plant drinking water comprises temporary hardness and permanent hardness, the temporary hardness removing method comprises the following steps: an acidification step: adding hydrochloric acid into raw water for acidification stirring reaction so as to obtain a first intermediate solution, wherein the reaction time is 1-3 minutes, and an aeration step: carrying out aeration treatment on the first intermediate solution, controlling the aeration time to be 8-12 minutes, and removing temporary hardness in the drinking water of the surface water plant to obtain a second intermediate solution. The permanent hardness removal method comprises the following steps: removing the permanent hardness of the drinking water of the surface water plant from the second intermediate solution through an ion exchange device; and the method for removing the hardness in the drinking water of the surface water plant is simple and efficient, and the temporary hardness and the permanent hardness in the drinking water of the surface water plant can be effectively removed.

Description

technical field [0001] The invention relates to the field of drinking water treatment in surface water plants, in particular to a method for removing the hardness of drinking water in surface water plants. Background technique [0002] Water hardness (usually refers to the content of calcium and magnesium elements, and also includes metal cations such as iron, manganese, aluminum, etc., which are easy to form insoluble salts, calculated by the calcium carbonate content in water) is an important indicator to measure water quality, and regenerated water is usually used for circulating cooling The water quality requires that the sum of total alkalinity and total hardness is not higher than 700mg / L. It is generally believed in the industry that hardness + alkalinity exceeding 1200mg / L is easy to scale. Therefore, in the process of drinking water treatment in surface water plants, reducing hardness is an important part of improving water quality, whether it is concentrated by mem...

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 Applications(China)
IPC IPC(8): C02F9/04C02F1/42C02F5/00C02F7/00
CPCC02F9/00C02F1/42C02F5/00C02F2001/425C02F7/00Y02W10/10
Inventor 刘成邱超牛浩朱泉
Owner 宿迁市河海大学研究院
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