As the capital county of Wujiang region, Jingjiang County is not only the seat of the regional administrative office, the garrison headquarters, the circuit court and other institutions, but also the area with the most complete local agricultural development. It is precisely because of this that the county's construction funds, materials, and personnel have always been the largest among the settlements in the Wujiang area, especially Jingjiang Town, where the county government is located, which has not only received a huge amount of funding from the Ministry of Finance, but also received various subsidies from the Finance Department of the Regional Administration Bureau, and the construction of infrastructure has been rapid and unusually fast.

At the same time, with the gradual development of new technologies, a series of new settlements, including Jingjiang County, are often built with the most advanced technology and design concepts in the east coast, and even the quality requirements are of high standards, and the whole one is built according to a century-old plan.

For example, the city's sewer facilities, which have learned the lessons of old cities such as Dongfang County, have learned the lessons of slow slopes, and use high-standard sewers made of masonry and cement to discharge urban sewage at a large angle. The branch network and trunk network of these sewers are not small in size, and they are not so much a sewer pipe as a large ditch closed with masonry. Large river ditches need to be regularly desilted and repaired, because the large amount of sediment carried by the sewage will be deposited on the river bottom, which will raise the river bed year by year, which in turn will affect the efficiency of the sewerage. The method of cleaning up is simple: send someone into the sewer and use shovels and shovels to dig up the foul-smelling silt from the riverbed - and at this time, the sewage that should have flowed through the sewer will be temporarily drained through another pipe, which can be controlled by a pre-made gate.

It is worth mentioning that the urban sewer network in Jingjiang Town, which is currently under construction, is integrated with the sewage discharge pipe of the public toilet. That is, the branch network - the sewer of each household. Stoneware pipes are used. The outer side is glazed to prevent leakage, and the terracotta pipe is fixed with brick cement to prevent breakage - independent of each other from the branch network, and then the small main stream (small brick ditch) connected with the sewer pipe of the public toilet, and finally enters the main stream (closed brick ditch) and flows outside the city.

The sewage was originally intended to flow directly into the Wujiang River, but Tang Yuan, the commissioner of the regional administration, shot the plan because it was too unhygienic. Tang Yuan insisted. Any discharge of sewage into a river – especially when it is the source of drinking water for most of the county's population – is irresponsible and must be prohibited unless it is discharged directly into the sea. After researching with the professionals who practiced urban sewage treatment sent from above, Tang Yuan finally planned to treat the sewage and discharge it into the wilderness outside the city.

The town of Jingjiang has also set up two plans to discharge this sewage into the wilderness, one of which is to flood the nutrient-rich sewage (which often contains feces and urine) into the wilderness. In any case, the East Coast is now full of uninhabited and undeveloped areas, and discharging this sewage into the wilderness does not seem to have a very bad effect. Because it is bound to be quite far from the main residential area, it will not pollute the air in the residential area, nor will it pollute the water source. Definitely an ideal way to deal with it.

In fact, Europeans continued to flow sewage through the rotten land until the 19th century to make it fertile. However, due to the foul smell and the foul and unhygienic environment, the residents objected, and this treatment gradually disappeared. However, this is not a big problem on the east coast, where the wilderness is full of large areas of wasteland that will remain barren for many foreseeable years, and the discharge of sewage into these places will continue to increase the fertility of the land for many years, and if it is decided to develop it, it will be possible to obtain a good harvest in the future.

The second option is to set up a sewage treatment plant in the wilderness, which is actually very simple, and basically includes sedimentation tanks and chemical clean tanks. Some professional and technical personnel of the Ministry of Health have done research in many cities in China (generally a project issued by the state, and there are a lot of research funds) and found that more than 95% of the sewage is water, and the content of others such as organic matter and sand and gravel accounts for a small proportion, because the urban sewer pipes have been baptized by several grids (filtering coarse objects) and filters (filtering small impurities), and the sewage flowing to the sewage treatment plant after being pressurized by the steam pumping station has been relatively "clean", so it is relatively simple to treat.

The function of the sedimentation tank is to precipitate some substances (usually sand) that are neither soluble in water nor suspended in the liquid to the bottom of the tank, and organic matter such as feces, oil, decaying animal and plant tissues and other organic matter is generally suspended or dissolved - if these organic matter is discharged into the river without any treatment, then the organic matter will gradually decay, consume oxygen, and at the same time release unpleasant gases, and eventually lead the fish and plants in the water to die due to lack of oxygen, and at the same time will produce a large amount of sludge in the river and silt it up, affecting the navigation of ships.

After the sewage precipitated for the first time through the sedimentation tank is pressurized by the pumping station (pumping machine) into the chemical clean tank, the staff will put a series of precipitants such as alum, clay, lime, ferrous sulfate and so on into the tank to make more impurities precipitate under the tank. Then, after these two processes, the sewage can be safely discharged into the wild wasteland, or discharged into the Wujiang River through a culvert - there is not much danger at this time.

The sediment at the bottom of the sedimentation tank and the chemical cleaning tank can also be cleaned regularly, and these sludges rich in water and organic matter are very fertile and make a good fertilizer after drying. Of course, if no one wants to use the fertiliser, the water-rich sludge can be pumped into a special container and thrown away in the sea – but this is too wasteful.

Obviously, the second option, while requiring the construction of an additional wastewater treatment plant, is a more rational and scientific process, and produces less pollution. As a result, Wujiang District Commissioner Tang Yuan made the final decision to promote this kind of drainage and sewage treatment facilities in all new settlements throughout the region. Some experts from the Ministry of Health have calculated that if such a project were to be built on a scale in a few years (more population and more sewage), it would be conservatively estimated that each settlement would need to invest more than 100,000 yuan to complete such a system. If it were to be extended to the whole country (the renovation of old settlements would cost much more than building a new one), it would be estimated that a huge investment of more than $8 million would be required - an astronomical amount enough to scare the vast majority of the East Coast Executive Committee.

Truth be told, there are a number of projects across the country on the east coast, including the fourth phase of the Northwest Railway, the construction of Highway 1 and Highway 2 extensions, the dredging of the Yazi Lake channel (which allows ships to sail directly to Ping'an Port), the expansion of the port of Qingdao, the dredging of the Yakuyi River, the widening and reconstruction of the middle and upper reaches of the Yi River, the construction of rural water conservancy projects in the entire Wujiang River basin, and the construction of new migrant settlements that cost the most money. These large and small infrastructure projects consume more than 2 million yuan of huge funds and massive labor resources every year, and in such a situation, the funds and personnel that can be invested in municipal infrastructure such as urban sanitation, drainage and sewage treatment are extremely limited.

The Wujiang region is unlikely to have such a system in every new settlement, when the cost of infrastructure is at its lowest – not only is there not enough money, but it is also difficult to find the specialized engineering and technical personnel, building materials, and large quantities of cheap labor needed for construction. Therefore, the only way to do this is to lower the bar by building such sewerage and sewage facilities in some of the core settlements, and then to find a way to spread them to the whole region when the finances are more comfortable. This idea is also entirely feasible at the national level, that is, to give priority to the renovation of sewer pipes and sewage treatment facilities in important central towns such as the capital Dongfang County, the industrial town of Ping'an County, the shipbuilding base Zhenhai County, and the financial and trade center Qingdao County, and then gradually spread to other settlements to share the pressure on capital, building materials and personnel.

We can also see that infrastructure construction will continue to be one of the hottest industries in the East Coast Republic of China now and for many years to come, and the country's thirst for cheap construction workers (which can effectively reduce infrastructure costs) will remain high for many years. Whoever can grasp these two points and make a fuss about them will definitely be able to take a big share of this infrastructure tide and quickly grow into one of the hottest billionaires in the East Coast.

Jingjiang Town, as the location of various yamen in the Wujiang area, plus there is a semi-manual, semi-mechanized large-scale regular paper mill in the area attached to the city outside the city, the urban population has more than 3,000 people, and it can basically be regarded as the core town of the entire region, so it has naturally received great investment from the regional administration and even the government affairs yuan. Not only should ports and highways be built, but also urban sewer pipes and sewage treatment plants should be started at the same time. It's no problem if you don't have enough money, there is an allocation! If the materials are not enough, there is no problem, squeeze from other projects, and a large brick and tile kiln will also be launched locally! There are not enough people, it doesn't matter, there are so many Klandians on the other side of the Wujiang River, whether it's hired or kidnapped, in short, find a way to get them over to work as coolies first!

All in all, in the East Coast, a new continent that is mired in a frenzy of construction, measures that can reduce infrastructure costs are worthy of attention. In particular, those Indian workers who pay little or no wages can effectively reduce the salary expenses of each project, and with them, maybe the construction cost of the water treatment facility in Jingjiang Town will be reduced by at least half, right? Think about it, you only need to catch hundreds or thousands of Indians, and then you only need to spend 40,000 yuan to get a city's sewer pipes and sewage facilities, instead of the original plan of 100,000 yuan, so what are you waiting for? (To be continued......)