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Do you know the characteristics of the zero discharge process of wastewater in the coking plant?

by:BOQU     2023-03-20
Do you know the characteristics of the zero discharge process of wastewater in the coking plant? The coking plant is a high-energy-consuming enterprise, and the water consumption is also very large, and the discharged wastewater mainly comes from the production water and steam condensation wastewater in the initial cooling of coke oven gas and coking production process, which is a typical toxic and refractory organic wastewater. Coking enterprises have put forward strict energy consumption requirements, and the requirements for water consumption per ton of coke (fresh water) are becoming increasingly stringent. In this case, in order to achieve sustainable development and clean production, the coking plant must not only make the discharge of wastewater meet the standard requirements, but also realize the comprehensive utilization of water resources, recycle and reuse coking wastewater, and realize zero discharge of coking wastewater , Minimize the reduction of new water consumption and save water resources. Therefore, it is necessary to use zero discharge of wastewater. So, what are the advantages of zero wastewater discharge in coking plants? Comprehensive utilization of water resources and zero discharge of waste water to achieve water recycling and cascade utilization to the maximum extent. According to the cooling temperature requirements of different process media, circulating water and cooling water are used for cooling; effectively play the role of cooling towers and reduce water drift losses. Strengthen water quality management, increase the concentration multiple of circulating water, and improve water recycling efficiency; use fresh water as much as possible for cooling tower replenishment and domestic water in the factory area, and use secondary water and reclaimed water for other water as much as possible. Reduce the amount of process waste water Zero discharge of waste water Strictly control the water content of furnace coal to reduce the production of process waste water; strictly process the operation, save crude benzene, steam for ammonia distillation and equipment pipeline cleaning; open the heat transfer oil system, and make use of the waste water from ammonia distillation to distill as much as possible Ammonia, reducing waste water volume. Establish a waste water collection system to achieve zero discharge of waste water to realize the diversion of waste water, build various sewage recovery pools, and build accident emergency pools to collect clean waste water, domestic sewage, rainwater and process waste water separately, and enter different systems according to different water quality requirements of users Use separately. The secondary water is used for water sealing of the rising pipe and flushing the toilet; the reclaimed water is used for the dilution water and defoaming water of the biochemical wastewater treatment system; the water after biochemical treatment is used for coke quenching, and the coke quenching is used as the end user of wastewater utilization . The emergency pool serves as a buffer pool for wastewater sources.
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