Project 1: Design of Waste Electric and
Electronic Recycling Project
Introduction:The project is to provide
development situation of electronic waste dismantling and recycling industry at
home and abroad for strategic planning and decision-making guidance, to provide
project feasibility study report, project proposal, application materials, and
bidding materials and etc. It also provides process design for normalized
treatment, equipment selection and plant design to guarantee safety,
environmental protection and economy. The project may jointly tackle the
problems like the recycling technology of new electronic waste and the components
which are not easy to dispose.
Fields of Application:Design and construction of electronic waste
dismantling, physical separation, treatment and disposal, and other technical
processes, scheme design for metal and non-metal recycling technology,
technical design for office equipment and consumables remanufacturing and etc.
Project 2: The Green Method of
Recycling Heavy Metals from the Sludge by the Microbiology
Introduction:The microbiology is used to recover valuable
metals including Cu, Zn, Ni, and etc. from heavy-metal sludge and contaminated
sites with high concentration of heavy-metals to achieve detoxification of heavy-metal
sludge and repair of contaminated soil.
Fields of application: Industrialized repair for soil contaminated
by Cu, Zn, Ni and other high-concentration heavy-metals as well as detoxification
of industrial sludge.
Project 3: Metal Extraction Processes from Etching
solution and Electronic Waste
extraction of nonferrous metals and noble metals from Etchants and electronic
waste leachates can guarantee the recycling of the etchants and the leachates. One
patent has been granted: A method and special devices for the recycle acid
etchants and copper recovery. Patent No.: ZL200910214606.4
Fields of application:Recovery of acid and alkaline etching
solutions as well as electronic waste leachates.
Project 4: The Detoxification and Recycling of Hazardous
Wastes such as Waste Leaded Glass and Zinc-Containing Residue
waste CRT glass and zinc-containing residue with mechanochemical process andalkalinewet process can directly
produce high-purity lead powder or zinc powder. The whole process is featured
by high adaptability of raw materials, simple process, high metal recovery
rate, and less pollution. There are five applied or granted patents: a method
to extract lead from alkaline leachate of waste leaded glass (Patent
Application No.:CN104593602A); a mechanochemical sulfidization
hydrometallurgical treatment on waste CRT funnel glass(Patent Application No.:CN104607284A); a process to recover lead from waste
leaded glass with mechanochemical reduction (Patent
Application No.:CN104120444A); a leaded glass recycling production
line (Patent Application No.: CN10464913B); and the leaching of zinc from
wastes or lean ores bearing ferric zinc by alkaline solution (Patent
Application No.: CN102534208).
Fields of application: Recycling of waste CRT including leaded
glass, lean miscellaneous zinc ore, zinc and lead ash, and soot containing zinc
and lead, etc.
Project 5: The Recycling Technology of
waste is decomposed into LMW products via chemical method to extract polyols
which can be used to prepare regenerated polyurethane materials. During the
reaction, with water as the solvent and a low reaction temperature, this technology
is environment-friendly and energy-saving. One applied invention patent is a method
to recover polyols from waste polyurethane materials (Patent Application No.:CN103275349A).
Recycling of various waste polyurethane foams and elastic bodies.
Project 6: Materials Separation and Recycling
Technology for Waste LCD Panel
Introduction:The technology can effectively separate polarizer and
glass substrate from LCD panel combined with mechanical and manual operation.
The rare and noble metal indium contained in the separated glass substrate can
be recovered by acid leaching assisted with ultrasound technology. This technology
is featured by low energy consumption and no secondary pollution. One applied
invention patent is a device used for separating and recycling the glass and polarizer
from the waste LCD panel (Patent Application No.:CN104793369A).
Schematic diagram of the separation device for
polarizer and glass from cushed waste Liquid Crystal Displays
*(1) Blender (2) Water injection pipe (3) Motor (4) Removable table
(5) Water storage (10, 11) Separation tank (12, 13) Collection tank
waste dismantling enterprises or regions with a higher scrappage of LCDs.
Project 7: Selective Recovery of Various Metals from
Waste PCB with Chemical Method
Comparison of Mobile Circuit Board before and after Metal Separation
Introduction:Thenoble metal components on waste PCB are recovered with
chemical method. And under different technical formula conditions, metals like
copper, zinc, tin, nickel, silver and gold are extracted selectively or sequentially.
Such simple technology with low cost avoids large usage of strong acid, which
improves the operating environment. Six related invention patents have been
applied or granted: a leaching solution for gold in electronic waste (Patent No.:ZL 201410166230.5); a method for recovering metals from
waste PCB by sequential leaching with ionic liquid (Patent Application No.: CN104775034A);
a method to recover tin and lead from wasted PCB (Patent Application No.: CN105525099A); a
method to selectively strip the metal gold from waste PCB surface (Patent Application No.:
CN105154680A); a method to selectively leach and recover the gold from PCB
surface coating (Patent Application No.: CN105200240A);
and a method to extract silver from waste circuit boards (Patent Application No.:
of application：Metal and
noble metal extraction from various waste PCB
Project 8:Green Dismantling Technology of Electronic Components
from Waste Printed Circuit Boards
Sketch of Welding
Components Removal from Circuit Board
Introduction:The welding components can be removed after
the lead-tin solder is dissolved from the waste PCB by applying the acid
solution of a green chemical oxidant to separate and recover the electronic components
from PCB substrate. This technology is featured by short dismantling time,
quick welding dissolution, environment friendliness, high security, and less
pollution. The recovered acid solution can be used as plating solution, and its
by-products after dismantling will be recycled. Two invention patents have been
applied and published: a wet dismantling process of waste PCB (Patent Application No.: CN104625286A), and a method
to dismantle the welding components of waste PCB (Patent Application No.: CN103934536A).
of application:Removal of
components from various waste PCB (circuit boards).
Project 9: APneumatic Dismantling Method
and Device for Waste Mobile Phones
Dismantling Device for Waste Mobile Phones
Introduction:This technology is used to
dismantle mobile phones by creating a pressure difference inside and outside
the mobile phone shell in order to crush its shell from the inside. The whole
process is environment friendly with no toxic and harmful substances produced,
realizing the efficient and environment friendly dismantling of waste mobile
phones in bulk. This greatly increases the efficiency of mobile phone dismantling
and reduces the labor cost in electronic waste dismantling enterprises. One applied
invention patent is a pneumatic dismantling device for waste mobile phones (Patent Application No.:CN105196035A).
of various waste mobile phones.
Project 10: The Toxicity
Effects of Polybrominated Diphenyl Ethers (PBDEs) Exposure
Introduction:The main pollution source of brominated
flame retardant, polybrominated diphenyl ethers (PBDEs) is electronic waste and
the production of PBDEs, especially in southeast China. The neurotoxicity of
PBDEs has attracted researchers' attention in recent years. This project
carries out a study on the effects on vision and visually guided behaviors in
larval zebrafish by its exposure to the PBDEs so as to explore the ecological
consequences caused by the exposure to the survival and reproduction of aquatic
organisms. The research achievements can provide not only useful information
for neurobehavioral toxicity effect of PBDEs and mechanism research, but also
important basic data and theoretical basis for PBDEs risk assessment and
Fields of application:Ecological risk of environmental pollutants
and assessment of human health.
Project 11: Combined treatment of thallium
contained in wastewater by microbiological chemical method
method is to remove the toxic heavy metal thallium contained in the wastewater
by combining biological agents with chemical mixed precipitant. The removal
rate is over 99.9%.Based on the emission limit of 0.005 ppm and the
requirements of economy and environmental protection, this method can be used
to treat the wastewater with the initial maximum thallium concentration of 4
ppm.This method avoids the use of a large number of reagents
and can quickly realize the up-to-standard release of the wastewater containing
thallium. One applied patent is an advanced treatment method of wastewater
containing thallium in the manufacturing and metallurgical process of electronic
products whosePatent Application No.is 201610294976.3.
Fields of application:Electronic products manufacturing, advanced treatment of
waste electrical and electronic equipment, electroplating, metallurgy, mining
and others related to the up-to-standard release of the wastewater containing
Project 12: Investigation and Restoration of
Soil Pollution in Electronic Waste Dismantling Site
of poor management or inadequate pollution control measures, many industrial
sites are polluted by heavy metals or organic matters. With the promulgation
and implementation of our site standards, it is necessary to conduct pollution
investigation, health risk assessment and restoration of the existing
industrial sites. At present, laboratory analysis, remediation technique test
as well as field bioremediation of soil pollution investigation and remediation
of electronic waste disposal sites and some mining areas and etc. are carried
out. There is a biological leaching technology for the soil polluted by heavy
metals with ultra-high concentration.
and restoration of soil pollution in some mining areas or electronic waste
Benefit Evaluation and Modeling of Carbon Emission Reduction of
Electronic Waste Recycling
Introduction:This is to analyze typical
e-waste recycling process and the key sources of carbon emissions and carbon
emission reduction based on life cycle theory, and then to put forward benefit
evaluation and modeling of carbon waste reduction in e-waste recycling.
of application:Carbon footprint analysis in e-waste recycling process, contribution accounting
of carbon emission reduction of electronic waste recycling enterprises, and
environmental performance evaluation of electronic waste management policy.
Assessment Framework of Carbon Emission Reduction
Project 14: The Life Cycle Information
Database and Decision Support System of Electronic Waste
Introduction:This is to build a life cycle
information database covering the whole process of electronic waste collection,
transportation, dismantling, recycling and terminal disposal based on the
industry-university collaboration mode, which includes two kinds of core data,
key components of typical electronic waste and life cycle inventory.On this basis, the data
collection system and decision support tools are developed to realize the
contribution, sharing and depth exploration of effective information of
relevant parties.One applied software copyright is the electronic waste
life cycle information database system whosePatent Application No.is 2016SR188431.
Support environmental authorities to carry out comprehensive management of the
whole process of electronic waste; to provide a self-help solution for the
analysis of the value of electronic waste recycling and environmental benefits;
applied to ecological design and process optimization for electrical and
electronic equipment enterprises, and to provide a method and data support for
the comparison and optimization of the technical scheme for the recycling of
electronic waste enterprises.
Information Database of E-waste Lifecycle
Equipment I: A Production
Line for Recycling Waste Toner Cartridge
Introduction:The production line is to
recycle the toner cartridge that is a key component of printers or copiers,
which mainly combines technologies such as selective mechanical crushing,
magnetic separation, high pressure air-cleaning, eddy current separation and oscillating
screening, so as to recycle the valuable materials containing plastic,
aluminum, iron and magnet.
The process system has apparent advantages, for instance,
low energy consumption, low noise, cleaned product and no secondary pollution.
Its processing capacity reaches 4 tons per day and the total power of the
system is up to 45Kw.
A toothed roller crusher used to treat the waste toner
cartridges.Patent Application No.: CN203620683 U.
of application:Recycling of toner cartridges and materials of waste printers or duplicators.
II：Equipment for treatment of scrap Hg-containing lamps
Introduction:This system adopts the way of mechanical
crushing and separation method with full sealed type. Its high compatible
processing performance allows it to handle the efficient separation and
recovery of glass, metal, plastic, fluorescent powder and mercury from a
variety of compact fluorescent lamp, high-pressure Hg-containing lamps and
other waste Hg-containing lamps simultaneously, realizing recycling and
harmless treatment. Its processing capacity is up to 500kg/h, the power of its crushing
and separation system reaches 60KW, and the power and time of its distillation
system are 70KW and 6 hours respectively.
l A recycling
and processing system and technology for waste Hg-containing lamps.Patent Application No.:
distillation recovery device for waste Hg-containing materials.Patent Application No.:
l A method to
strengthen the leaching of rare earth metals from waste phosphors by mechanical
activation.Patent Application No.:
Fields of application:Recycling of valuable
materials from waste fluorescent lamps, high-pressure Hg-containing lamps and
other waste Hg-containing lamps, and environment-friendly treatment of metal
Equipment for Dismantling Waste LCD Displays
Introduction:The equipment can automatically dismantle
waste LCD displays, and recover its components including plastic rear cover,
border frame, shielding cover, circuit board and liquid crystal screen.
Compared with artificial disassembly, the automatic disassembly line ensures
high efficiency and quality, and significantly reduces the harm to the
environment and the human body during the operation.
l An automatic cutting device for
circuit board connected to a waste LCD.Patent Application No.: CN204867214U
l An automatic disassembly method
of screws and its device based on visual positioning and torque control.Patent Application No.: CN104924064A
l A trepanning device for display
cover.Patent Application No.: CN204832917U
l A dismantling and
classification system for waste LCD.Patent
l A dismantling process for waste
LCD displays.Patent Application No.: CN104923551A
Fields of Application:Dismantling and material
recovery of all kinds of LCD displays of waste microcomputers.
Equipment IV: Recycling Metals
from Waste Printed Circuit Boards through Microbial Method
Introduction:Microbial leaching and extraction -
electrolysis metal recovery technology is used in this process. The recycling
of metals from waste printed circuit boards is fully realized and the
traditional method of high energy consumption and secondary pollution is
avoided. The leaching rate of metal like copper from electronic waste is over
95% and the metal purity is over 99%. This is identified as a domestic leading
technology by Department of Science and Technology of Guangdong Province and
the experts from China Environmental Protection Industry Association.
l A device
for recovering the elemental copper on the surface of gantry and its recovery
method.Patent No.: ZL
l A method
and equipment for the recovery of metal components on a discarded flexible PCB
(FPC).Patent No.: ZL
l A method
of using carbon cloth electrode modified by nitrogen doped carbon nanotubes to
improve the efficiency of microbial leaching of copper from printed circuit
boards.Patent Application No.:
l A method
of using carbon pod electrode modified to improve the efficiency of microbial
leaching of copper from printed circuit boards.Patent Application No.: 201510912037.6
l A method
of using a carbon cloth electrode system modified by graphene to improve the
method of microbial leaching of copper from waste printed circuit boards.Patent Application No.:
l A method
of using a carbon pod electrode system modified by graphene to improve the
microbial leaching of copper from waste circuit boards.Patent Application No.:
l A process
to improve the efficiency of microbial leaching of copper from waste printed
circuit boards by Nitrogen doped carbon nanotubes.Patent Application No.:
Fields of Application:Metal recovery from all kinds of waste circuit boards.
V: Equipment for Recycling the Nonmetallic Materials in Waste Printed Circuit
Board by Green Chemical Methods
Introduction: This technology is to separate and recover the epoxy
resin and glass fiber from the nonmetallic materials in waste printed circuit
boards through green chemical methods. The separation effect is promising. The
recovery conditions are mild and the process is easy to operate. And the
chemical reagents are recyclable and without secondary pollution.
l The method of recovering epoxy
resin and glass fiber from nonmetallic powder in printed circuit boards.Patent Application No.: CN101407596A
l A chemical treatment of the
nonmetallic powder or the toughened polypropylene composite in waste printed
circuit boards and its preparation method.Patent Application No.: CN105504516A
l An organic acid treatment of
the nonmetallic powder or the polyethylene terephthalate(PET) composite;
material in waste printed circuit board and its preparation method.Patent Application No.: CN105524434A.
l A chemical treatment of the
nonmetallic powder or the polypropylene composite in waste printed circuit
boards and its preparation method.Patent
of application:All waste epoxy resin, including recycling nonmetal materials from waste and
scrap printed circuit board, all kinds of thermosetting epoxy resin products
such as epoxy resin, tubular waste electronic packaging waste.