The rise of nanometers

In fact, Zhang Youde's feeling was correct.

This year's climate is indeed on the dry side.

From late October last year to early February this year, precipitation continued to be low in most areas north of the Huaihe River. The North China Plain, parts of northwest China, and most areas of the Huanghuai River continued to have more than 100 days without rain or snow.

During this period, the total precipitation in the area north of the Huaihe River was less than 10 millimeters, which was 50 to 80% less than the precipitation in the same period in previous years.

Drought has become the most prominent problem in agricultural production. It has also caused drinking water difficulties for people and livestock in some areas, and has affected reservoir water storage to a certain extent.

The reason for this drought outbreak is that the high pressure belt at high latitudes in the Northern Hemisphere is abnormally stable, blocking water vapor from lower latitudes from moving northward.

Coupled with the influence of straight westerly winds at high altitudes, the temperature in China increased by 0.5 to 2 degrees Celsius compared with the same period.

Although there is only an increase of 0.5 to 2 degrees Celsius, this increase in temperature may have little impact on years with relatively sufficient precipitation.

But for the northern region, which itself lacks water vapor at low latitudes, this is the result of adding fuel to the fire. The increase in temperature will increase the evaporation of soil and surface water, further exacerbating the drought.

during this widespread drought.

The only region that can barely maintain its basic base is Shandong Province.

The Shandong Provincial Water Affairs Corporation, managed by Blue Era, not only ensured urban water supply during this drought, but also urgently supplied 1.2 billion cubic meters of pure water to agricultural areas in various places.

And with the putting into use of three seawater desalination plants, the three seawater desalination plants are currently operating at full capacity, with an average water supply of 1.5 million cubic meters per day.

In Dezhou, Quancheng, and Binzhou, which are severely affected by the drought, because the water pipes of the desalination plant have not been laid, they can only rely on recycled water from the sewage treatment plant and the reserve reservoir that was just opened last year.

Fortunately, after taking over water affairs in various parts of Shandong Province last year, Blue Era brought some old reservoirs into its management scope and turned them into strategic reserve reservoirs through deepening, strengthening and transformation.

For example, in the Texas area, basically every county is equipped with one or two strategic reserve reservoirs.

Then set up a simple sewage filtering station. The so-called sewage filtering station is a facility with only a filtration system and no pollution treatment capacity.

This kind of sewage filtering station is mainly simple to construct and can reduce the laying of sewage pipes. The filtered sewage is also pure water.

The waste residue filtered by the filtering station is regularly transported back to Blue Age’s Texas Comprehensive Recycling Plant for processing.

Basically, a county town is equipped with a sewage filtering station. The pure water treated by the sewage filtering station is injected into a nearby strategic reserve reservoir.

Plains County, Texas.

The sewage filtering station near Pingyuan County is located not far to the southwest of Pingyuan County and is called Xiangjiahe Reservoir.

It covers an area of ​​15,000 acres and has a water storage area of ​​10,000 acres. Before renovation, the maximum water storage capacity was 20 million cubic meters and the average water depth was about 3.1 meters.

After reconstruction, the average depth reached 7.5 meters and the maximum water storage capacity was 50 million cubic meters. The current water storage capacity is about 42 million cubic meters.

In fact, the average annual surface water runoff in Pingyuan County is only 45.586 million cubic meters; the annual extraction of water resources from the underground reaches 136 million cubic meters. This part of the groundwater is mainly used for agricultural irrigation and then industrial production water.

After Blue Age moved in this year, some large companies cooperated with Blue Age and switched to internal water recycling in factories, reducing groundwater extraction by about 14 million cubic meters.

Cities discharge approximately 150,000 to 220,000 cubic meters of sewage every day, and small factories and farms discharge 70,000 to 120,000 cubic meters of sewage every day.

Since sewage is in the pipes, it has penetrated by about 10 to 20%.

At present, Pingyuan County sewage filtration station can obtain 180,000 to 300,000 cubic meters of recycled pure water every day, and this pure water is continuously injected into the reservoir.

In order to alleviate the drought, the Xiangjiahe Reservoir has opened and released water five times, providing about 6 million cubic meters of stored water downstream.

Those towns that are not connected to the Xiangjia River can only replenish their farmland by drilling wells and extracting groundwater.

However, drilling wells is not that fast. Due to the large-scale exploitation of groundwater over the years, the groundwater level in the North China Plain has dropped to an average of more than 50 meters, and the groundwater level in some areas has even reached two to three hundred meters.

Before 2000, the average length of a motorized well was more than ten or twenty meters, but this year, it was more than fifty meters.

If the problem of agricultural irrigation water is not solved, the overexploitation of groundwater in North China will reach 6 to 8 billion cubic meters every year. The groundwater level is expected to drop by 0.5 to 3 meters every year, and may drop by more than ten meters every year in some areas.

This behavior led to the emergence of the Great Funnel in the North China Plain.

The decline in groundwater levels will not only make it more difficult for farmers to extract groundwater, but will also lead to ground subsidence, collapse of buildings, and seawater intrusion in coastal areas.

Many farmers who cannot wait for machine-driven wells to be drilled can only drive to the Xiangjiahe Reservoir or the middle and lower reaches of the Xiangjia River to transport water back for emergency relief.

Due to the long construction time of the Pingyuan County tap water pipeline, the water company increased the tap water pressure from 0.7 kilograms to 2.4 kilograms through pressurization.

The purpose is to increase the water supply through pressurization, increase the previous daily water supply to 600,000 cubic meters, and supply some water to farmers in some towns and villages.

According to the current supply, the 42 million cubic meters in stock in Xiangjiahe Reservoir can only support about 70 days.

Therefore, the time for overpressure water supply is calculated. Generally, water supply starts at one o'clock in the morning, allowing farmers to prepare water storage containers, and the watering effect is better.

Because watering in the early morning can reduce evaporation, allowing plants and crops to fully absorb water, and the remaining water will penetrate deeper into the soil to further retain soil moisture.

After this calculation and regular water release every day, the support time of the stored water can be increased to about 150 days.

Coupled with the daily replenishment of 180,000 to 300,000 cubic meters of recycled water to maintain the current water supply, Pingyuan County can guarantee dimension supply for the next 200 days.

The situation in other counties and towns in Texas is similar, or in other words, in all parts of Shandong Province, except for Dongying, Rizhao, and Daocheng, which are firmly located in Diaoyutai, other areas are similar.

The Shandong Provincial Water Affairs Corporation's precautions prevented the occurrence of widespread drought in the more than 20 million acres of farmland affected.

The provinces of Hebei and Henan, which are also affected by the severe drought, have different fates. Although the government has taken measures to fight the drought, there are no systematic measures, and losses are inevitable.

A large number of farmlands are without water for irrigation, and many cities have problems with their tap water supply.

The impact of this drought has made cities recognize the reality. Shandong Province, which is immune to this situation, is a living advertisement for the blue era.

Although there are three domestic companies with water purification technology, everyone understands that Blue Era is the invisible overlord.

Although BEWG is currently actively exploring the market, it still does not have the ability to manage water affairs on a large scale. It is not that Hebei and Henan provinces look down on BEWG, but that the blue era is too dazzling.

From the perspective of these two provinces, BEWG is only suitable for supplying tap water to Beiping and Tianjin, that is, a single urban service type.

And asking the other party to contract the water supply of a province and coordinate the water supply for industry and agriculture will probably only allow the blue era to come.

Of course, United Water also has this potential, but its recent business is all in the northwest region, and it has no energy to enter North China.

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