Hazardous Waste Treatment In The Hardware And Electronics Industry

         The hardware industry plays a very important role in today's industrial society,and the vast majority 

of final consumer products cannot be separated from the hardware industry. 

If televisions require screws and springs, and computers require spring clips, screws, metal casings, etc.,they all belong 

to the hardware industry. 


Based on the current products in the industry,they can be broadly divided into three categories: 

hardware components, hardware finished products (referring to final consumer goods),and various 

clamping tools and molds. 

Hardware components are the basic components of industrial products, mainly referring to screws, springs, spring plates, various assembly plates, etc. 

This part is also an indispensable part of industrial products in the future. 


Hardware products refer to commonly used hardware components in daily simple consumer goods,including some items 

that are mainly composed of metal and are made up of individual pieces, such as pots, boxes, basins, etc. 

These types of products are relatively rare. 

Various fixtures and molds refer to the mold fixtures used in various industrial processing and production, 

the vast majority of which are made of high-quality steel and are also an important part of industrial production. 

For example, molds are required for making small hardware components, plastic molding,and the electronic assembly 

and electronic component industries require hardware fixtures.


The basic electronic manufacturing industry mainly includes scrap circuit boards,circuit board scraps, connectors, 

gold, silver, palladium and other precious metal wastewater and waste liquid online recycling or transportation recycling, 

copper etching waste liquid recycling, precious metal cotton cores, resins,activated carbon and other materials recycling:


HW08 waste engine oil, oily waste (iron slag or metal slag)

HW09 oil/water, hydrocarbon/water mixture or emulsion (oil/water, hydrocarbon/water mixture or emulsion 

           generated during mechanical processing using cutting oil, cutting fluid, coolant)

HW12 dye coating waste (dye coating waste liquid, paint residue, etc.)

HW17 surface treatment waste

HW21 chromium containing waste (tank slag, tank solution,and wastewater treatment sludge generated 

            by anodizing with chromic acid)

HW23 zinc containing waste (solid waste generated from tail gas treatment of hot-dip galvanizing process)

HW34 waste acid

HW35 waste alkali

HW49 waste empty containers and waste cloths, gloves, wiping paper, etc