The industrial wet process machine factory needs to adopt multi-dimensional environmental protection measures in the production process, covering aspects such as wastewater, waste gas, solid waste, noise and energy management, in order to reduce the impact on the environment. The following are the specific measures

I. Wastewater Treatment and Recycling

Classification collection and preprocessing

Collect etching wastewater containing heavy metals such as copper and nickel, and cleaning wastewater containing acids and alkalis, etc. by component classification.

Pretreatment methods such as neutralization, precipitation and filtration are adopted to remove large suspended particles and some heavy metals.

Deep processing and reuse

Membrane separation (such as reverse osmosis), ion exchange, evaporation crystallization and other technologies are applied to recover water resources and valuable metals (such as copper).

The qualified wastewater is used in the cooling circulation system or for greening irrigation to reduce the consumption of fresh water.

Hazardous waste management

Hazardous wastes such as waste etching solution and sludge must be entrusted to qualified units for disposal, and the transfer manifest system must be strictly followed.

Ii. Waste Gas Treatment

Control of acid mist and organic waste gas

Install acid mist scrubbers (such as packed towers or spray towers) to neutralize acidic gases through alkaline solutions.

Volatile organic compounds (VOCs) are treated by activated carbon adsorption, catalytic combustion or regenerative thermal oxidation (RTO) technologies.

Local exhaust ventilation and closed operation

Gas collection hoods should be installed at workstations such as etching tanks and developing tanks to ensure effective collection of waste gas.

The workshop maintains a slight negative pressure to prevent the escape of exhaust gas.

Iii. Solid Waste Management

Classification collection and resource utilization

General solid wastes such as metal scraps and waste packaging materials are classified and recycled, and then handed over to recycling resource enterprises for processing.

Hazardous wastes such as waste etching solution and waste filter elements should be stored separately and regularly removed.

Reduction measures

Optimize the etching process, reduce the amount of chemicals used, and lower the generation of waste liquid.

Iv. Noise and Vibration Control

Equipment noise reduction

Silencers and sound insulation covers should be installed on high-noise equipment such as fans and pumps, and shock-absorbing foundations should be adopted.

Reasonable layout

High-noise equipment should be placed in independent workshops or basements, far away from office areas and residential areas.

V. Chemical Management

Safe storage

Etching solution, developer solution and other chemicals are stored in dedicated warehouses for anti-corrosion and fire prevention, equipped with emergency handling facilities for leakage.

Substitution and reduction

Select low-toxicity and low-volatility chemicals (such as cyanide-free electroplating solutions) and promote micro-etching technology.

Vi. Energy and Resource Management

Energy-saving measures

Adopt high-efficiency and energy-saving equipment (such as variable-frequency motors and LED lighting), optimize the production process and reduce power consumption.

Water resource recycling

Build a reclaimed water reuse system to use the treated wastewater for replenishing cooling towers, cleaning workshop floors, etc.

Vii. Environmental Monitoring and Emergency Management

Online monitoring and regular testing

Install online monitoring equipment for wastewater and waste gas to monitor the concentration of pollutant emissions in real time.

Entrust a third-party institution to conduct full-index testing to ensure compliance with emission standards.

Emergency response plan

Formulate emergency response plans for sudden environmental incidents, equip with emergency supplies (such as adsorption cotton and neutralizers), and organize regular drills.

Viii. Clean Production and Green Supply Chain

Clean production Audit

Regularly carry out clean production audits, identify high energy-consuming and high-pollution links, and implement improvement measures (such as optimizing the etching solution formula).

Green procurement

Give priority to environmentally friendly raw materials and suppliers, and promote the greening of the industrial chain.

Ix. Employee Training and Environmental Awareness

Operation specification training

Strengthen the training of employees on environmental protection regulations and operating procedures to ensure standardized operations and reduce man-made pollution.

Environmental protection culture construction

Through publicity and education as well as incentive mechanisms, enhance the environmental awareness of all staff and create a green production atmosphere.

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