"The sewage treatment station is built here, and the low-lying terrain is just right, and the sewage from all parts of the country can be collected here through the sewers." Ye Pengze chose the site of a wasteland below Yangjiazhai to be used as a sewage treatment station.

When the sewage/wastewater discharged from the pollution source cannot meet the requirements of the discharge standard or does not meet the requirements of the environmental capacity due to the high total amount or concentration of pollutants, thereby reducing the quality and function of the water environment, it is necessary to undergo artificial enhancement treatment, which is the sewage treatment plant, also known as the sewage treatment station.

"The treatment process of the sewage treatment station, as well as the selection of the treatment structure and equipment type, are important aspects of the design of the sewage treatment station. The main basis for determining the wastewater treatment process is the degree of treatment that the wastewater needs to achieve, and the degree of treatment depends on the destination of the treated effluent.

If the treated effluent is discharged into the water body, the degree of sewage treatment should not only make full use of the self-purification capacity of the water body, but also prevent the water body from being polluted. It is uneconomical to arbitrarily adopt advanced treatment methods without considering the self-purification capacity of the water body, but it is also not appropriate to exhaust the self-purification capacity of the water body, and there should be room for it.

If the treated sewage is used for irrigation of farmland, the quality of the sewage should meet the required standards. If the treated effluent is reused in industrial enterprises or urban construction, two situations should be considered: direct reuse; Reuse after some supplementary treatment.

Sewage treatment plants are generally aimed at removing BOD substances. In large-scale sewage treatment stations, sedimentation-centered primary sewage treatment and biological treatment-centered sewage secondary treatment are mostly used. In some cases, in order to remove nitrogen, phosphorus and other substances, tertiary treatment of sewage is carried out after biological treatment.

The sludge produced by the primary sedimentation tank, which is the product of sewage treatment, is treated by the sludge treatment system. The sludge treatment system is an integral part of the sewage treatment plant, and the sludge is treated by two methods: aerobic digestion and anaerobic digestion.

Aerobic digestion is mostly used in small sewage treatment plants serving a population of less than 50,000; Anaerobic digestion is commonly used in large and medium-sized sewage treatment plants.

The procedures of sludge treatment are: sludge thickening, sludge anaerobic digestion, sludge drying, and incineration. The determination of the industrial wastewater treatment process is complex, and various factors should be comprehensively considered. For example, the main object of removal, the requirements for the quality of the treated water, the amount of wastewater, the change in water quality, etc.

The treatment units that can be used for various pollutants are shown in the table: the order of the treatment process is simple first and then complex; In terms of the object of removal, suspended contaminants are removed first, and then colloidal substances and dissolved substances are removed. ……”

When it comes to your own professional knowledge. Ye Pengze's eyebrows danced, and he talked very strongly, and as soon as he opened the chatterbox, it was like a surging river, and he unreservedly trayed out everything he knew.

"The sludge is highly concentrated in the thickening chamber and discharged by pressure on a regular basis, because the sludge has low moisture content and good dewatering performance, it can be directly fed into the mechanical dewatering device, and the dewatered sludge cake can also be used to make pavement floor tiles. Secondary pollution is exempted.

According to your production layout and planning, if you can strictly follow the plan, then I can be sure that the sludge after sewage treatment is free of any industrial pollution, and the organic matter is very high, and the nitrogen, phosphorus and potassium content is more than twice that of ordinary organic fertilizer.

In that case, you can use technology to produce this sludge into a good organic fertilizer, which can be sold for hundreds of yuan a ton. Of course, for the sake of insurance, it is also necessary to test the heavy metal indicators in the sludge at that time. If the heavy metals exceed the standard, it will cause secondary pollution to the soil. ”

"Thank you. Expert Ye's careful guidance, I still have to trouble you these days, the people in our village are laymen, so we need senior experts like you to tell us what to do, otherwise we will be headless flies, flying around! Yang Yiren and other village cadres. After this day of accompaniment, I really have a lot of knowledge, and I am very fortunate to have such a responsible, technical and technical expert to guide.

"You're really welcome, this is my job and hobby, in fact, I should thank you. Look at this green mountain and green water. People's moods are different, and I can't ask for what I have learned to give full play to what I have learned and do my best to protect the natural ecological environment.

I am very pleased that the people in your village can have such an awareness of environmental protection, and I am very worried to think that some places have completely disregarded environmental protection for the sake of economic benefits, causing irreversible ecological damage! ”

"That's, that's, this is the home we live on, we don't protect it, we have to wantonly destroy it, we will cut off our children and grandchildren, and we will be thundered by the sky!"

……

With the growing reputation of the engineering division, the generous salary has attracted many people to apply, and some are even introduced by relatives in neighboring counties.

Through the recent continuous recruitment, the total number of personnel in the engineering division has reached 260 people. With the increase in personnel, in order to better play the advantages of manpower to speed up the construction progress, Yang Xiankun divided two more teams.

One team is responsible for water treatment stations, sewage treatment stations, water towers, domestic water, irrigation and industrial water use, etc., and the other team is responsible for fencing the main mountain roads to prevent wild boars and other animals from coming down and spoiling crops, orchards, and livestock.

The fence around the core farm area demarcated by Yang Jibin has been built, and workers are clearing hidden dangers such as snake nests and rat dens in the farm.

The demarcated core farm covers an area of more than 600 acres, including a small hill. The farm will grow all kinds of vegetables, fruit trees, chickens, ducks, geese, pigs, cattle and sheep and other poultry and livestock, mainly to provide top-quality ingredients for their families and its high-end hotels. At the innermost part of the farm, Yang Jibin plans to enclose it with a brick wall to prepare for the construction of villas, fresh-keeping warehouses, wine cellars and other related supporting buildings.

The security team with a temporary quota of 40 people has also been set up in the head office, which will be divided into two parts: patrol security team and property management security team in the future, with a quota of 20 people for the patrol team, divided into four groups, each group of 5 people, from time to time to patrol various places near Yangjiazhai to deal with various special situations; The property management security team checks the entry and exit of personnel in various confidential places to ensure the safety of the company's property and confidentiality.

This security team is coached by elite special veterans, recruits 20 village stick boys and 20 veterans, and is undergoing devilish training. Yang Jibin also did not hesitate to invest a lot of money to expand the venue, purchase various training equipment, etc., and also provided a lot of high-grade medicinal materials for assistance.

……

"Expert Ye, I've worked hard today, please sit down and have a cup of tea first, this is our unique wild tea here, no worse than the famous tea outside!" After this period of transplantation and cultivation, the wild tea garden in charge of Yang Yiren has also begun to take shape, and it has a bit of a tea garden.

At the same time, Yang Jibin also improved the soil in the tea garden with a divine hoe and the space spring water in his spare time, and the quality of wild tea has been greatly improved, and it is also good for entertaining ordinary guests.

"Well, it's really extraordinary, it's not inferior to the best tea I've ever drunk, is this your tea garden produced by itself, it's really rare!" Ye Pengze's brows stretched, looking very enjoyable.

"That's true, when you inspected the terrain today, the wild tea plantation you passed by is ah, we are stepping up transplantation and cultivation, and the scale will be even larger in the future. Expert Ye, if you think it's okay, I'll ask someone to collect more for you in the past two days! Yang Yiren was also very pleasantly surprised, he was no longer interested in wild tea after being used to drinking space fairy tea, but at this time he felt that this wild tea seemed to be a little delicious.

"That's a good dare, so I don't dare to ask for it, I'm really grateful to Brother Yang!"

"It's good if you like it, it's just a gesture, Expert Ye, after a hard day, you must be hungry, go to eat, some game and farm vegetables in the mountains, don't dislike it!"

"Where, where, this is obviously a delicacy of the mountains and seas, I rarely eat it once a year, this time it is really thanks to you!" Indeed, Ye Pengze enjoyed the farmhouse scenery and catering very much, looking at Yang Yiren, who was full of energy, green hair, and a smile, and sighed: Life is like this, what more can a husband ask for?

While he was eating, suddenly a thunderbolt roared from the sky without warning, and then a bolt of lightning streaked through the sky. Immediately afterward, the bean-sized raindrops fell to the ground like bullets fired from machine guns, blooming beautifully and briefly in the water. The rain became heavier and heavier, and the large and small raindrops were connected together, like silver dragons colliding and splashing in the crowded space, drawing irregular curves.

"The beginning of autumn has passed, this is also the autumn rain, it is said that an autumn rain is a cold, presumably this hot summer is about to pass!" Yang Jibin looked at the thunderstorm outside the house and sighed, there are still a few days before school starts, and this happy summer vacation is coming to an end.

"yes, I just feel like it's going to rain today, it's really stuffy! There hasn't been a lot of rain this summer, but luckily you have plenty of water here, otherwise you would have had a drought in the neighboring county. This rain scene is really comfortable and refreshing! Ye Pengze also put down his chopsticks, walked out of the house, and watched the rain with interest.

Different life circumstances make it different to listen to the rain. However, listening to the rain is all about listening to the dialogue of the soul, listening to the rush of true feelings, and listening to the murmuring of the years. The sound of the rain beats, in addition to the echoes of the years, there is also the regret of the past and the melancholy of wanting to rest. It seems that only in the light sound of the rain in this tiled house can the soul breathe and life can continue.

"Well, this rain is good, the weather is getting colder, and the two barren mountains we contracted can also plant trees!" Yang Yiren touched his beard and said with a smile.

…… (To be continued......)

PS: I re-read the previous chapters today, and found that the first 30 chapters were indeed too immature, so I spent most of the day revising chapters 1-30. If you are interested, you may wish to take a look back.