The situation of Ji'nan Bao Quan is grim. Why does the Huang Tai power station answer the question why do we have to use underground water?
Shun Net -
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Huang Zhongming filming / Wang Yunfeng / reporter Li Yongming
Although several spring rains have been made recently, the situation of the conservation spring is still severe. The Municipal Water Conservancy Bureau will check the illegal water intake in 4-6 months this year to minimize groundwater exploitation and maintain the spring The group sprays. Northeast Ji'nan, as a heavy industrial base in the city, is a large groundwater producer all the year round. What is the amount of groundwater consumption in an enterprise? What are the difficulties to be solved for an enterprise to complete groundwater replacement? When can the water consumption be completely discontinued? Recently, by visiting the Huang Tai power plant, the reporter analyzed the typical samples of groundwater exploitation.
question
why does the surface water have to use ground water?
[response] the water quality and water temperature
the most suitable for generating unit
surface water people can drink, you Huang Tai power plant has to use groundwater? Some people have questioned the Huang Tai power plant. Until 2004, the water used in Huang Tai power plant was still underground water, and all the water was pumped by deep wells. In the production period of more than 20 years before that, the Yellow Taiwan Power Plant consumed about 10 million cubic meters of groundwater each year, and the total amount of water consumption could be used for nearly one year of the city's about 6000000 population.
in order to protect springs, Ji'nan called for limited production to control groundwater production. Up to now, Huang Tai power plant has started to use the Yellow River water and sewage treatment plant's tap water and tap water in addition to mining groundwater. However, Huang Tai power plant will not be such a subdivision of water consumption. In the eyes of the plant, there is basically only the supplement of water and cooling water.
even if the purified water sold on the market is added to the boiler, our equipment will not last for 24 hours. Recently, a technical worker at Huang Tai power plant said that the water quality of the supplementary water used for power generation is so critical. Once the water quality is out of line, the entire 1 billion 500 million yuan generating set will be completely scrapped and cannot be repaired. Compared with surface water, groundwater is the closest to the standard of generating supplementary water.
a key step in the process of generating electricity is the need for cooling water. The staff said that if the steam was not cooled at 567 degrees Celsius, the pipe would turn red. At the same time, some auxiliary equipment also needs to cool down. Surface water is cold in winter and hot in summer, no more than constant temperature underground water. In winter, the surface water temperature is too cold, and it can barely accept it, just increasing energy consumption. But the summer surface water temperature is too high, used to cool the equipment, will directly cause the generating unit to reduce the operation efficiency, even lead to the failure of the operation of the unit, unable to cope with the peak of the summer power consumption.
if the summer surface water is used to cool the equipment, it is equivalent to a person who has a fever and a hot towel. He said that the surface water can be as high as more than 30 degrees Celsius in summer and is not suitable for cooling equipment. The constant temperature of underground water will be more suitable.
he said that the comprehensive water quality and water temperature are the most suitable for generating units to use underground water.
question now how much underground water is used for a year? [response] 1 million M of ground water last year, surface water 8 million M
how much underground water can be used for one year at Huang Tai power plant? Recently, the Ji'nan Municipal Water Conservancy Bureau is in charge of the Water Conservancy Bureau, which is still retained by the Yellow platform power plant up to 5000 cubic meters. Huang Tai power plant claims that it currently uses 6 million cubic meters of water in the Yellow River, 6 million cubic meters in the water year and 1 million cubic meters in the water year.
at present, about 6000000 cubic meters of groundwater can be saved, equivalent to 5 Daming lakes. Recently, the Huang Tai power plant responded that since the replacement of ground water with ground water since 2004, the water consumption of the surface water of Huang Tai power plant in 2014 has reached 8 million cubic meters, the water use of groundwater is 1 million cubic meters, and the replacement rate of groundwater has reached 90%.
question
to change the ground water, what do you want?
[response] to add chiller and medium water depth treatment workshop
compared with groundwater, the replacement of the Yellow River water is simply a thick soup, the water is very clear, and can not be used directly. Huang Tai power plant technicians introduced, want to replace all underground water, it is very difficult. In order to cooperate with the replacement of underground water, all the water conveyance pipelines of power generation equipment have been changed all the time.
in order to solve the problem of unstable surface water temperature, Huang Tai power plant added refrigeration mechanism to cool water, and cooled the unit cooling system for the two time.
water treatment by Guangda water works three, Huang Tai power plant is the largest user and annual water consumption is 6 million tons. The technical personnel introduced that, in order to use the water, the Huang Tai power plant can only redesign two generators, "the water can not be used directly, and also added a set of medium water depth treatment workshop."
question
when can no groundwater be fully exploited?
[response] conservative estimates. After the 2017 heating season,
Huang Tai power plant responded that in industrial refrigeration, in 2015, the new industrial refrigeration system could be further optimized to verify the reliability of the new industrial refrigeration system while ensuring that the unit could run steadily in the summer power peak Ji Anquan. After that, the two phase of industrial refrigeration will be carried out to strive for the use of the refrigerating capacity of a centralized refrigeration unit in the summer of 2016 to replace all the groundwater used for the cooling of the system. The next step will be to build a larger system to complete the replacement of groundwater in the 2015-2016 year heating season.
a person in charge of the Huang Tai power plant said, "it is conservative to say that after the 2017 heating season, the Huang Tai power plant will all stop the exploitation of the groundwater used for production." Huang Tai power plant water trend
80s to 2003 of last century: all use of groundwater, 10 million cubic meters per year. In 2004: groundwater was replaced by some surface water, and the annual groundwater exploitation decreased year by year. In 2011: in addition to surface water and groundwater, it began to use medium water (about 6 million cubic meters per year) in 2014: surface water: 8 million cubic meters of groundwater: 1 million cubic meters in 2015: the two phase of industrial refrigeration was carried out to further reduce groundwater exploitation. 2016: summer is planned to be completely discontinued for cooling water in 2017.