Complete process for treating coated industrial waste water

An industrial wastewater, complete set of treatment technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. and other problems, to achieve the effects of stable and reliable effluent quality, efficient degradation of organic matter, and good nitrification.

Inactive Publication Date: 2007-09-05
YANGZHOU HENGTONG ENVIRONMENT PROTECTION TECH
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water pollutants discharged during the coating process, such as resins, surfactants, phosphates, and high-concentration organic matter, can cause serious pollution.
Due to the complex composition of coating wastewater and irregu

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
  • Complete process for treating coated industrial waste water
  • Complete process for treating coated industrial waste water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] As shown in Figure 1:

[0030] 1. Pretreatment of waste liquid discharged from phosphating and passivation processes:

[0031] Add medicine to the waste liquid discharged from the phosphating and passivation process to precipitate phosphide, and use an inclined tube precipitator to separate the supernatant; mix the supernatant into the wastewater to be treated.

[0032] According to the different components of the phosphating and passivation waste liquid, lime milk can be added to the phosphating and passivation waste liquid to precipitate phosphide, or calcium chloride and sodium hydroxide can be added to precipitate phosphide.

[0033] 2. Pretreatment of waste liquid discharged from electrophoresis, topcoat and degreasing processes:

[0034] Add inorganic flocculant salts such as ferric chloride or aluminum chloride to the waste liquid discharged from the electrophoresis, topcoat, and degreasing processes to precipitate solid suspended matter and other heavy metal hy...

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

A complete treating technology for the coating sewage includes such steps as regulating pH value of said sewage, adding flocculant, coagulating reaction, separating out supernatant by slant-tube depositor, removing floating dregs by combined air-floating unit, biochemical treating by elastic filler YDT and biomembrane reactor, disinfecting, and reusing the resultant water.

Description

technical field [0001] The invention relates to the treatment technology of industrial wastewater, in particular to the technical field of coating wastewater treatment. Background technique [0002] Automobile (or other mechanical equipment) painting is the main measure to protect and decorate automobiles (or other mechanical equipment), and it is one of the very important manufacturing processes. The water pollutants discharged during the coating process, such as resins, surfactants, phosphates, and high-concentration organic matter, can cause serious pollution. Due to the complex composition of coating wastewater and irregular discharge, the water quality changes greatly, the treatment equipment has a long process, many types, covers a large area, time-consuming and labor-intensive operation, and high operating costs. Water cannot be reused for production. Contents of the invention [0003] The purpose of the present invention is to invent a complete treatment process ...

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): C02F9/14
Inventor 潘德勤张键
Owner YANGZHOU HENGTONG ENVIRONMENT PROTECTION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap