Unlock instant, AI-driven research and patent intelligence for your innovation.

Comprehensive utilization technology of residual liquid after evaporation of heavy salt water

A technology of residual liquid and high brine, applied in the direction of alkali metal compounds, bicarbonate preparation, alkali metal sulfite/sulfite, etc., can solve the problems of low product recovery rate and unsuitable industrial treatment, and achieve step reaction rate High, the effect of alleviating the shortage of water resources and reducing secondary pollution

Inactive Publication Date: 2015-04-29
东莞市英硫净水服务有限公司
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Since the residual liquid after evaporation of high-salt wastewater contains a large amount of Glauber's salt, salt and organic pollutants, COD and heavy metals, calcium, and magnesium hardness salts, if the above-mentioned process is simply applied, and there is only industrial salt or industrial Glauber's salt reaction process, the product recovery rate will be higher. Low, the product also contains heavy metals and organic matter, and cannot be processed industrially

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
  • Comprehensive utilization technology of residual liquid after evaporation of heavy salt water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A comprehensive utilization process of residual liquid after evaporation of high brine, including the following preparation process:

[0033] Step 1: add water to the residual liquid after evaporation of high brine to make it a mixed saturated solution, and then add 100 g / m 3 Activated carbon and 300g / m 3 Hydrogen peroxide, adjust the pH to 8, increase the temperature to 50°C, and the reaction time is 2 hours.

[0034] Step 2: Rapidly filter the solution after the reaction in Step 1, and take the filtrate for later use. The temperature of the pumping rate is 50°C.

[0035] Step 3: adding solid ammonium bicarbonate to the filtered solution, adjusting the pH value to 8, and centrifuging with a centrifuge to obtain solid sodium bicarbonate after the reaction. The reaction temperature was 30°C, and the reaction time was 2 hours.

Embodiment 2

[0037] A comprehensive utilization process of residual liquid after evaporation of high brine, including the following preparation process:

[0038] Step 1: add water to the residual liquid after evaporation of high brine to make it a mixed saturated solution, and then add 150 g / m 3 Activated carbon and 250g / m 3 Hydrogen peroxide, adjust the pH to 9, increase the temperature to 55°C, and the reaction time is 3 hours.

[0039] Step 2: Rapidly pump and filter the solution after the reaction in Step 1, and take the filtrate for later use. The temperature of the pumping rate is 55°C.

[0040]Step 3: adding solid ammonium bicarbonate to the filtered solution, adjusting the pH value to 9, and centrifuging with a centrifuge after the reaction to obtain solid sodium bicarbonate. The reaction temperature was 35°C, and the reaction time was 2.5 hours.

Embodiment 3

[0042] A comprehensive utilization process of residual liquid after evaporation of high brine, including the following preparation process:

[0043] Step 1: Add water to the residue after evaporation of high brine to make it a mixed saturated solution, and then add 200 g / m 3 Activated carbon and 200g / m 3 Hydrogen peroxide, adjust the pH to 10, increase the temperature to 60, and the reaction time is 2.5 hours.

[0044] Step 2: Rapidly pump and filter the solution after the reaction in Step 1, and take the filtrate for later use. The temperature of the pumping rate is 55°C.

[0045] Step 3: adding solid ammonium bicarbonate to the filtered solution, adjusting the pH value to 10, and centrifuging with a centrifuge after the reaction to obtain solid sodium bicarbonate. The reaction temperature was 40°C, and the reaction time was 3 hours.

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 technical field of heavy salt water desalting treatment, in particular to a comprehensive utilization technology of a residual liquid after evaporation of heavy salt water. The technology comprises preparing process as follows: step one, a mixed saturated solution is prepared from the residual liquid after evaporation of heavy salt water and added with activated carbon and an oxidizing agent, the PH is adjusted to 8-10, and the temperature is adjusted to 50-80 DEG C; step two, a solution obtained after reaction of the step one is subjected to rapid extraction and filtration, and a filtered liquid is taken for standby application; step three, solid ammonium carbonate is added to the filtered solution, the PH value is adjusted to 8-9, and solid sodium bicarbonate is obtained through centrifugal separation by a centrifugal machine after the reaction. The technology has the characteristics of simple steps, high comprehensive recovery rate, good purity of a finished product, low treatment cost and suitability for industrial treatment.

Description

technical field [0001] The invention relates to the technical field of high-salt water desalination treatment, in particular to a comprehensive utilization process of residual liquid after high-salt water evaporation. Background technique [0002] Whether looking at fresh water resources from a global perspective or from a Chinese perspective, we are already facing huge pressure on fresh water supply. In order to solve the water crisis, increasing revenue and reducing expenditure is a must, and wastewater treatment and reuse is an important part of it. [0003] High-salt wastewater refers to wastewater with a total saline mass fraction of at least 1%, and its main sources include inland lakes and coastal shallow water. . . . . , High-salt wastewater contains many types of organic matter, with large differences in chemical properties, and mostly contains Cl-, SO42-, Na+, Ca2+ and other salts. After multiple desalination treatments such as evaporation and filtration of hi...

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
IPC IPC(8): C01D7/10C01D5/00C01C1/16
Inventor 袁伟光
Owner 东莞市英硫净水服务有限公司