The technology achieves all-weather dust suppression, significantly improves the environment, and saves a lot of fresh water resources. It is estimated that this system can save more than 300,000 tons of fresh water for Tianjin Port Coal Terminal every year and save more than 600 million yuan in water. Calculated according to the average annual water consumption of 60 tons per resident of each new district, it can be used by more than 5,000 residents for one year.
Tianjin Port Coal Terminal Company is the main force of Tianjin Port's coal operations. In recent years, the throughput has increased steadily. In 2011, it reached 43.57 million tons, making it the largest company in Hong Kong. The company has adopted a variety of technical measures such as cargo cover, system equipment spraying, mobile car watering and covering film spray film, and took the lead in realizing green and environmental static dust suppression in the national ports. On this basis, they further developed a new technology of “small sea water micro-spray curtain wall dust suppressionâ€, which realized dynamic dust suppression and completely ended the history of water and dust suppression in cold winter weather.
According to reports, the seawater atomization spray dust removal device consists of a submersible pump, a centrifugal pump, a seawater sedimentation tank, a clean pool, and a micro-spray belt. The micro-spray belt is divided into two layers, which are erected at a height of 8 meters and 10 meters from the ground. When the seawater atomization spray dust removal device works, the seawater is purified by sedimentation, transported to the micro-spray belt, and a misty seawater curtain wall with a certain coverage surface is sprayed through the small circular holes arranged in sequence on the micro-spray belt to cover the coal dust. The device has a simple structure and a large dust-removing surface. At present, on the 100,000 square meters of the two general bulk cargo terminals and the front of the terminal in Nanjiang No. 9 and No. 10, this set of equipment is combined with seawater spray anti-aircraft guns and mobile seawater spray vehicles to form a complete set of three-dimensional dust suppression nets.
In the next step, the company plans to set up a high-pressure pumping station to transport high-pressure water to the ship through the pipeline, and use the detachable atomizing nozzle to atomize and humidify the working hatch to solve the dust problem on the ship. At the same time, add seawater. The desalination device activates desalinated seawater for atomization spray when the temperature is higher than zero to reduce the corrosion of seawater on vehicles and equipment.
It is reported that the company's dust-proof and greening all use desalinated seawater, and use the advantages of seawater desalination and low cost to sell fresh water to form a profitable industry.
At the port, there is a coal dust that is clear in the blue sky and blue sky. The sewage on the ground is flowing across the river. This is the impression of the pier that I once lived in the memory of the author near the port area.
Noise and air pollution and water pollution are the three major environmental problems that the port needs to solve. Due to historical reasons, the docks in China's Laogang District are generally built near the urban area. Noise can cause damage to the eardrum of residents near the pier, and hearing loss; air pollution caused by dust can cause many diseases, such as heart disease, lung disease, respiratory diseases, and lower lung function.
A responsible industry and a responsible enterprise must take responsibility for the safety of human life. Only in this way can we achieve harmonious coexistence of industry, society, people and nature, and enterprises and industries can gain long-term vitality. In today's global climate anomalies and increasingly serious environmental problems, the environmental pressure on the ports is growing. Port construction and operators must assume environmental protection responsibilities and must not let the port become a source of pollution.
China is a big port country and there are many old ports. In the process of accelerating the transformation of water transport development mode and realizing the transformation of traditional industries into modern waterway transportation industry, the port should further optimize the layout, actively promote infrastructure construction, completely abandon the old operation methods, rely on scientific and technological progress to achieve energy-saving and environmentally-friendly production, and accelerate A "two-type" port was built. The completion of the three-dimensional dust suppression net of the bulk operation of Tianjin Port is a vivid practice, and it has achieved the effect of one arrow and many sculptures.
We are pleased to see that many local governments have begun to pay attention to the rational planning of terminals. As far as I know, Australia's bulk cargo terminal is generally built 5 kilometers away from residential areas, and adopts a fully enclosed work mode. Many environmental problems are solved and many mistakes are corrected. This experience is worth learning from our ports.
For the government, it is necessary to incorporate the environmental protection of the port into the track of legalization, the power of the system of use to restrict the behavior of non-environmental protection, so that we do not see black smoke in the air, no dust on the ground, no floating objects in the water, and the port. A clear blue sky.
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