Plastic plating-countercurrent rinsing circulating water saving technology.
Huizhou Boluo Tenglong Technology Co., Ltd. serves you wholeheartedly! Mainly engaged in plastic hydroelectroplating processing, with plastic injection molding processing, mold processing and so on! .
Save industrial water.
In industry, water is mainly used for cooling in the production process, boiler water, raw material water and treatment and washing products, of which cooling water is the most, accounting for about 60% of the total industrial water consumption. for example, the annual industrial water consumption in Beijing is about 10-1.3 billion cubic meters, of which the cooling water consumption is about 600-800 million cubic meters. The main measures for industrial water saving are as follows:
1. Reuse of cooling water: the implementation of cooling tower and cooling pool technology in the factory can make a large amount of cooling water be reused with less investment and quick results. For example, after a plastics factory invests tens of thousands of yuan to set up a cooling tower, the water consumption for producing 1 ton of plastic is reduced from more than 300 cubic meters to 40 cubic meters, and the recovery rate of water reaches 800.90%, saving nearly 30,000 yuan a year.
2. To recycle waste water and establish a closed circulation system for industrial water: after a paper mill in Tianjin adopts this method to realize industrial water recycling, the daily water consumption is reduced from 3000 cubic meters to 300cubic meters, and water saving is up to 90%.
3. Recycled water: in the production process of chemical industry, electroplating, printing and dyeing, textile and other industries, the circulating water technology of countercurrent rinsing can be carried out, and the clearer water discharged by the latter process can be used for the previous process, which can save more than 30% of the water.
4. innovate the process and adopt new technology: air cooling, steam cooling instead of water cooling, hot water instead of steam heating. An oil refinery in Canada uses steam cooling instead of water cooling, reducing the water consumption per ton of crude oil from about 100 cubic meters to 0.2 cubic meters. Using hot water instead of steam for heating can also save water by more than 30%.
5. Replace the exchange of good water and waste water with secondary water: factories with large water consumption in coastal cities can use sea water instead of fresh water for cooling. For example, 13 factories in Dalian, such as chemical industry, petroleum and power generation, use 1.68 million cubic meters of sea water for daily cooling machinery and equipment, which is equivalent to 56% of the total water consumption in the city. Shallow groundwater with poor quality can also be used instead of high-quality deep groundwater for industrial cooling and building construction water. Waste water from factories can also be exchanged. For example, a paper mill in Qingdao uses 600 cubic meters of bottle washing wastewater from a nearby winery every day for pulp washing, pulp washing, ball loading and grass steaming. According to the statistics of 22 factories in Qingdao, 3400 cubic meters of water is saved every day after the waste water is exchanged and used.
