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Author: Marisa
Case 1: Waste gas treatment project of a precision electronic electroplating company
1.Background: The company mainly engages in electroplating processing of precision electronic components, generating a large amount of acid mist, alkali mist, and organic waste gas, especially nickel mist and organic solvent vapor generated during nickel plating and gold plating processes.
2.Processing technology:
1)Gas collection system: Install a closed gas collection hood above the tank of the electroplating production line to ensure effective collection of exhaust gas.
2)Multi stage washing tower: using an acid-base spray tower, first acid mist washing is carried out, followed by alkaline washing to neutralize acidic gases, and then residual alkaline substances are removed by washing with clean water.
3)Activated carbon adsorption: Install an activated carbon adsorption tower to perform deep adsorption treatment on organic waste gas.
4)Emission monitoring: Set up online monitoring equipment to ensure that the treated exhaust gas meets emission standards.
3.Effect: The governance project significantly improved the working environment in the workshop, reduced surrounding air pollution, and met environmental regulations.
Case 2: Waste gas treatment case of a certain automotive parts electroplating factory
1.Background: The factory generates a large amount of steam and acidic/alkaline exhaust gas containing heavy metals such as chromium, copper, and nickel during the electroplating of automotive parts.
2.Processing technology:
1)Local ventilation: For high-risk areas such as chrome plated grooves, install a strong ventilation system.
2)Chemical scrubbing tower: A two-stage chemical scrubbing tower is used, with the first stage adding a reducing agent to treat chromium containing waste gas, and the second stage undergoing acid-base neutralization.
3)Fiber filter: Install high-efficiency fiber filters to further capture fine particles and droplets.
4)Catalytic oxidation: For organic waste gas, catalytic combustion technology is used to thoroughly oxidize and decompose it.
3.Effect: After the implementation of the project, not only did it solve the problem of exhaust emissions, but it also improved the health level of employees and enhanced the sustainable development capability of the enterprise.
Case Three: Comprehensive Waste Gas Treatment Project of a Hardware Electroplating Factory
1.Background: The factory generates acid mist, alkali mist, and cyanide containing waste gas during the electroplating process of hardware components, and urgently needs an effective waste gas treatment plan.
2.Processing technology:
1)Fully enclosed production line: Transform the production line to achieve fully enclosed operations and reduce exhaust emissions.
2)Wet scrubbing tower: Adopting multi-stage wet scrubbing towers, utilizing the principle of acid-base neutralization to treat acidic and alkaline waste gases.
3)Activated carbon adsorption regeneration system: equipped with an activated carbon adsorption tower to treat organic waste gas, and a pyrolysis regeneration device to extend the service life of activated carbon.
4)Emergency response: Establish emergency collection and processing facilities to respond to sudden leakage accidents.
5.Effect: After comprehensive management, the factory's exhaust emissions have reached the standard, complaints from surrounding residents have been reduced, the corporate image has been improved, and potential environmental fines have been avoided.