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

Membrane treatment process for high-salt industrial wastewater

A technology of industrial wastewater and treatment process, which is applied in the field of water treatment, can solve the problems of high energy consumption, etc., and achieve the effects of low energy consumption, simple sludge components, and short treatment time

Pending Publication Date: 2022-02-11
波塞冬(江苏)新材料科技有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-salt industrial wastewater membrane treatment process to solve the problem of large energy consumption in the above-mentioned background technology

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
  • Membrane treatment process for high-salt industrial wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A high-salt industrial wastewater membrane treatment process, characterized in that it includes: a raw water tank, a chemical softening unit, a microfiltration unit and a nanofiltration unit; the chemical softening unit includes a dosing system, a chemical softening tank, and a sludge dehydrator; The microfiltration unit includes tubular membrane microfiltration equipment and a microfiltration liquid tank; the nanofiltration unit includes nanofiltration equipment and a nanofiltration dope tank.

[0037] According to the above technical solution, the raw water tank pumps raw water into the chemical softening tank through a feed pump; the raw water tank is connected to the chemical softening tank through a pump and a pipeline, and a flow meter is installed on the pipeline.

[0038] According to the above technical solution, the dosing system adds chemicals to the chemical softening tank through the dosing pump and the pipeline, and the chemical softening tank is connected ...

Embodiment 2

[0050] A high-salt industrial wastewater membrane treatment process, characterized in that it includes: a raw water tank, a chemical softening unit, a microfiltration unit and a nanofiltration unit; the chemical softening unit includes a dosing system, a chemical softening tank, and a sludge dehydrator; The microfiltration unit includes tubular membrane microfiltration equipment and a microfiltration liquid tank; the nanofiltration unit includes nanofiltration equipment and a nanofiltration dope tank.

[0051] According to the above technical solution, the raw water tank pumps raw water into the chemical softening tank through a feed pump; the raw water tank is connected to the chemical softening tank through a pump and a pipeline, and a flow meter is installed on the pipeline.

[0052] According to the above technical solution, the dosing system adds chemicals to the chemical softening tank through the dosing pump and the pipeline, and the chemical softening tank is connected ...

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 membrane treatment process for high-salt industrial wastewater. The device comprises a raw water tank, a chemical softening unit, a microfiltration unit and a nanofiltration unit. By adding sodium hydroxide to adjust the pH value, the treated wastewater reaches the optimal environment with a good polymerization effect of the polyaluminum chloride, and flocculation is facilitated; polyaluminum chloride and polyacrylamide are used together, so that the polymerization advantages of the two can be considered, and the flocculation time is saved while the flocculation effect is improved; the sludge components are simple, and the polymer aluminum diethyl hypophosphite can be supplied to flame retardant manufacturers to be recycled; parts of small particles also exist in the flocculated supernatant, and the flocculated supernatant is easy to block after directly passing through the nanofiltration membrane, but the small particles can be quickly filtered out by using the tubular microfiltration membrane for filtration, so that the hydraulic retention time is also saved, and the energy consumption is low; and the nanofiltration equipment can well intercept divalent molecules, effluent can be directly reused on a production line, the content of concentrated waste liquid is low, after-treatment is easy, and energy is saved.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a high-salt industrial wastewater membrane treatment process. Background technique [0002] High-salt industrial wastewater refers to wastewater with a total salt content of more than 1-2%. High-salt industrial wastewater is produced in a wide range of ways, and the water volume is increasing year by year. It mainly comes from steel, electroplating wastewater, degreasing silane wastewater, surface treatment and other production and processing industries. This wastewater contains a variety of substances (including inorganic salts, oil, organic matter and heavy metal ions, etc.). According to different production processes, the chemical composition, types and properties of organic matter in high-salt industrial wastewater vary greatly, and most of the salts contained in it are Cl - , SO 4 2- 、Na + , Ca 2+ , Mg 2+ and other high-valent ions. [0003] At present, the ...

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): C02F9/04
CPCC02F9/00C02F1/56C02F1/5245C02F1/444C02F1/442C02F1/66
Inventor 杨永强倪腾亚杨俊雅杨理杨娜
Owner 波塞冬(江苏)新材料科技有限公司