"And have they decided on the place they chose?"

"No, they just ask for a place with a lower altitude than Dianchi Lake and better transportation conditions, and it is best not to exceed 20 kilometers from Dianchi Haikou.

Since this is an important part of their governance plan, the location may affect the construction schedule even further away.

So, this is also something that needs to be agreed upon, because if we can't meet their requirements, the total construction period that is finalized may be extended. ”

"A large-scale sewage treatment plant for the treatment of sewage sludge in Dianchi Lake shows us the sincerity of Minsheng Company.

So, judging from the preliminary consultations, have they identified a site of interest? ”

"In fact, according to this request of theirs, there is no suitable location for twenty kilometers, or even thirty kilometers near Haikou Town.

Mainly the flat land with a lower altitude than Dianchi Lake, almost all of them are inhabited by a large number of people, and the cost of demolition in such a large area is unimaginable.

We also consulted with representatives of Minsheng Company several times, and they finally agreed to our suggestion of another higher site.

Due to the high terrain in this area, it is difficult to lay sewage pipes and transport sewage from low to high.

It has been calculated that if a sewage treatment plant is built in this area, the construction and operation costs will be more than 30% higher than the original plan.

Therefore, they also put forward another request, which is to extend the use of sewage treatment sites on regional land from five years to ten years.

Whether this place can be planned to build a sewage treatment plant for them still needs to consult the land department. ”

"And where did you decide on the site?"

"The place we suggested was in a mountainous area about six kilometers northwest of Haikou, where the terrain was relatively flat.

The biggest reason is that there are only a small number of residents and farmland in that area, and the cost of land acquisition and relocation is relatively low. ”

The staff of the Environmental Protection Agency then showed a map of the area they had drawn up on a large screen for all participants to confirm.

In fact, Minsheng is looking at an area southwest of Haikou because there are two small reservoirs that can be used as their sewage sedimentation tanks.

But those two reservoirs need to supply the hundreds of thousands of people living in the surrounding area with water for their daily lives and production, so we thought it would be much more appropriate to give them this area. ”

All the participants repeatedly compared the satellite maps of the two areas, and finally unanimously agreed on the mountain area proposed by the Environmental Protection Agency.

For YN, which is mountainous and tree-rich, the forest coverage rate is more than 50 percent of the total area, and the forest coverage rate is more than 60 percent.

Therefore, the little trees that need to be cut down to build a sewage treatment plant in this mountainous area are not much of a problem.

After confirming the sewage treatment site, the director of the Environmental Protection Agency said: "According to the needs of the Dianchi Lake treatment project, Minsheng Company will also build an artificial embankment about five kilometers long in a prominent position in Langni Bay, dividing the open sea in two."

In addition, in order to enhance the continuous purification capacity of the water quality of Dianchi Lake, they will build seven sewage treatment plants inside Dianchi Lake.

The investment in these two projects is very large, and they are an inseparable part of the Dianchi Lake treatment project.

Therefore, they also have a requirement that they need to obtain the right to develop and use these artificial works built by Minsheng Company and the nearby waters for ten years. ”

"Ten years? Didn't they determine a total construction period of only five years? ”

The representative of Minsheng said that the management of Dianchi Lake is not at all possible at the cost paid by the government, and the excess can only be made up for by other places.

Therefore, in addition to the five-year governance fee, the development and use rights of all supporting projects is their ultimate goal, which is the real profit point of Minsheng Company. ”

"These supporting projects are related to the continuous water purification of Dianchi Lake, if they ask for ten years of development and use rights, don't we still need to pay for five years of continuous treatment?"

"We have also confirmed with Minsheng that the five-year construction period is only the period for us to pay the governance fee on a monthly basis.

In fact, most of their work has been completed in two years, and the last three years are just gradually recovering the funds invested in the early stage.

After the expiration of the project, the water environment of the entire Dianchi Lake has been able to achieve self-purification ability.

As long as we control the water quality imported from the upstream to more than three categories, and the volume remains at the current level, there will be no further deterioration of water quality.

As a result, those wastewater treatment facilities can almost be discontinued.

Of course, if the government needs to use these facilities to treat the sewage flowing into the lake, it can also let Minsheng continue to undertake the sewage treatment work in Dianchi Lake according to the market sewage treatment price.

That is to say, after five years, we only need to pay 100 million yuan per year for sewage treatment, and we can hand over the discharge and treatment of water for the daily life and production of millions of people around Dianchi Lake to Minsheng Company. ”

"The sewage treatment fee of 100 million yuan a year, for the entire KM city, such a price seems to be relatively cost-effective, but I don't know if the effect of their treatment can still be maintained at more than three categories?"

In fact, this Minsheng company has the ability to improve the quality of Dianchi Lake's water body to above Class II water.

But over the years, everyone has known that in the face of a large water body like Dianchi Lake, it is necessary to pay an extra price to improve the water quality to a higher level.

I also inquired about how much it would cost to improve the water quality of Dianchi Lake to Class II or above.

The general manager of Minsheng Company replied that we still only need to pay 700 million yuan per month for governance.

However, due to the need to consider a longer treatment time, the construction level of those supporting facilities should also be increased at the same time.

With the increase in construction funds, in order to achieve a balance between revenue and expenditure, the total construction period of treatment will be extended to eight years, of which the treatment time is three years and the water quality maintenance period is five years.

In other words, if we are going to improve the water quality of Dianchi Lake to above Class II water, the total treatment cost in eight years will reach more than 60 billion.

In addition, the period of free development and use of relevant ancillary projects and nearby waters will be extended from 10 years to 20 years.

Moreover, during this period, if they are all responsible for the discharge and treatment of sewage into the lake, as long as there are no major discharge accidents upstream, they ensure that the water quality of Dianchi Lake has been maintained at the level determined in the treatment contract.

That is to say, if the contract we signed with Minsheng Company is to treat more than three types of water, the total investment in treatment costs in five years is about 43 billion yuan, but we can ensure that the water quality of Dianchi Lake will be maintained above three types of water quality within ten years.

If we sign a contract to treat more than Class II water, the total investment in treatment costs for eight years is about 70 billion, but we can ensure that the water quality of Dianchi Lake will be maintained above Class II water quality within 20 years. ”