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Dahua goes green

As a video centric AIoT solution and service provider, Dahua is committed to improve its sustainable development capabilities and to make continuous efforts in building a greener and safer digital world by developing innovative solutions that can help conserve energy and reduce carbon emission.

As of 2022, Dahua implemented green manufacturing and established an advanced wastewater recycling system, achieving zero discharge of industrial wastewater. The manufacturing process adopts lead-free fully automated soldering, which does not generate waste lead gas.

The workshop itself is equipped with a fresh air system capable of Class-100 000 dust-free purification through airflow and dust control. The exhaust gas is treated with UV photolysis and activated carbon (the discharged air meets the treatment standards after deep adsorption. [Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface. This process creates a film of the adsorbate (solute) on the surface of the adsorbent (solvent). This process differs from absorption, in which a fluid (the absorbate) is dissolved by or permeates a liquid or solid (the absorbent) – https://en.wikipedia.org/wiki/Adsorption.

High quality low noise equipment is selected inside the workshop, and some high noise equipment is systematically arranged and segmented using sound-absorbing materials. Professional third-party testing is conducted every year to ensure the noise control meets relevant requirements.

Dahua Dust-proof Workshop.

Energy conservation

In addition, to enhance the efficient utilisation of resources, Dahua established a dedicated production cleaning team that focuses on energy conservation, pollution reduction, and efficiency enhancement. It aims to maximise resource utilisation and to reduce waste in order to lessen or eliminate its adverse effects on the environment and human health. Dahua completed the implementation of seven low-cost plans and four high-cost plans, saving a total of 1,783 million kWh of electricity, with an average emission reduction of 15 tons of waste cleaning fluid and 170,64 kg of VOCs waste gas.

What’s more, the second phase of Dahua’s intelligent distribution centre realised 100 000 square-metres of unmanned warehouse operation. The Dahua Park’s upgraded smart electricity system saves up to 1 389 800 kWh of electricity every year, and its newly upgraded air-conditioning system can save up to 6000 tons of water annually. Also, the company has successfully obtained 56 China Energy Conservation Product Certifications.

Several photovoltaic power stations were deployed around the vicinity of the park to generate clean energy and help reduce carbon emissions. To refine the use of electricity in the production site, the company has established a smart energy consumption platform that provides real time monitoring of electricity consumption in each workshop, statistical analysis of reports, and accurate identification of possible improvement points.

Dahua Energy Conservation.

Moreover, Dahua optimises the emissions of various segments, promotes waste ‘source reduction’, prioritises the use of clean raw materials that are pollution-free and eco-friendly, and focuses on every detail to help reduce emissions in each of its manufacturing units. The intelligent upgrade of the lens module assembly and testing line has saved an average annual electricity of 1,081 million kWh, generating a total economic benefit of RMB 2,667 million (around R7,4 million at the time of editing).

The renovation of the dust-proof workshop saves up to 638 000 kWh of electricity annually, resulting in a total economic benefit of RMB 606 000 (about R1,68 million). The company has also installed exhaust systems to uniformly collect waste gas, which will then undergo thorough treatment using purification devices in the factory to effectively remove toxic and harmful substances. Dahua also strictly control material quality by developing and upgrading its automated testing platforms, achieving a fully automated testing coverage rate of 94.51% for its core products.

Sustainable development goals

By taking actions including energy consumption platform construction, equipment upgrading, plant transformation, waste gas purification, testing and upgrading, Dahua practices green manufacturing, improves the effective use of resources, and continues to create a green manufacturing model that takes good consideration of customer needs, enterprise benefits, resource utilisation and environmental impact. Moving forward, Dahua will continue to adhere to its sustainable development goals and environmental responsibilities, promoting green manufacturing by creating and implementing innovative solutions and methods that can help save energy and reduce pollution and carbon emissions in the environment.

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