Minsheng Company didn't care about the "fat water fish" caught in the South Lake, because it couldn't make a mistake with the relevant departments for this more than 1,000 catties of fish, and if the urban management department came forward, it completely avoided the unpleasant things between the Minsheng Company and the people who "picked up the fish".

According to Wei Minsheng's arrangement, they only need to be responsible for pumping out the sewage in the South Lake, and there is no need to take care of other things.

In order not to make others suspicious, Minsheng Company also rented several excavators to clean up all the black sludge on the edge of the South Lake.

Some onlookers who ate melons saw this practice and said very sadly: "It must be a face-saving project again, why don't you transport the cleaned up sludge and push it to the bottom of the lake like this, how can we solve the problem of water odor in the South Lake?" ”

But Liu Mengling's excavator drivers don't care about the opinions of the masses, they just do things according to the requirements of the employer, whether this practice is correct or not has nothing to do with them, they only need to settle the wages according to the final amount of work.

In the dead of night, Long Hao quietly walked around the South Lake, scraped off more than half of the silt at the bottom of the lake, and sent it all into the shared space, and then transferred some of the sewage from the sewage treatment plant to cover up the traces of the silt being emptied at the bottom of the lake.

As a result, the next day everyone saw still half of the lake's sewage, but in fact, only a small and half of the silt at the bottom of the lake remained.

Long Hao and Wei Minsheng also transferred a part of the clear Lotte Creek water to the reclaimed water storage tank of the sewage treatment plant, and re-injected it into Nanhu Lake through the pipeline of the reclaimed water recycling water system.

In this way, we can see that the "reclaimed water" that comes out of the sewage treatment plant without any peculiar smell is constantly diluting the eutrophicated lake water.

In order to prevent the masses from seeing the problem, it took several days to clean up the silt, which can almost be said to be three feet to the ground, leaving only a thin layer of black silt on the surface of the lake bottom, covering the brown soil at the bottom of the lake.

It only took three days for the huge stinky pond of Nanhu Lake to completely change its appearance, and the lake water could no longer see those green organic creatures, and under the breeze, the clear waves were like scales, shining along the lake.

The water is getting clearer, and the work of flushing the city's sewer pipes continues, but the air in the city is no longer smelling of the fishy smell it used to be.

Using the same method, Long Hao cleaned up the silt in a transit pond in the city, and even used a high-pressure water cannon to completely flush the pond around.

Minsheng Company's vigorous and resolute work attitude and immediate results have been appreciated by all residents in the urban area, especially when everyone knows that ZF only allocates 500,000 yuan of sewage treatment funds every year, and Minsheng Company needs to invest millions of yuan in additional free funds to improve everyone's living environment, Minsheng Company's related business has been supported by more people.

Whether it is the sales of vegetables and timber, or the related business of people's livelihood canteens, ZF is also a green light, giving the greatest convenience within the scope of the policy.

Wei Minsheng has achieved very good results in establishing a good relationship with ZF's relevant departments through environmental protection, and Minsheng has become a major enterprise in this small county, clearing most of the obstacles for the development of other businesses in the future.

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The sludge that Long Hao transferred to Huaxia Villa through the shared space is mainly in a macromolecular structure if it is not fermented, and it will burn the roots of the crop if it is directly applied to the periphery of the crop.

Therefore, before using the sludge as organic fertilizer, it must be fully fermented.

However, if the moisture content of the sludge cannot be reduced to less than 30%, direct composting will hardly be successful.

Of course, the sludge can also be decomposed through the biogas digester, but such a large amount of silt is simply not something that can be processed by the current biogas digester owned by the villa, so the best way to dispose of this sludge is to make compost.

In order to reduce the moisture content of the silt, Wei Minsheng had a large amount of grass ash and hay transported from the gas power plant, and a layer of silt and a layer of grass ash and a layer of hay were piled up.

In this way, the dry plant ash and hay will absorb a large amount of water from the sludge, so that the sludge can be decomposed by microorganisms.

At the same time, the plant ash itself is also a high-quality organic potassium fertilizer, and the hay can not only play a role in ventilation, but also decompose itself to produce a large amount of humus after being compiled.

Whether it is organic potassium fertilizer or humus, it has the advantages of being different from natural soil, light and loose, good water permeability and aeration performance, strong water and fertilizer retention ability, and fertility is easy to be absorbed by crops, which can effectively promote the growth and development of crops.

The biggest advantage of organic compost is that it can improve the soil, it is not compacted after long-term application, it has sufficient nitrogen, phosphorus and potassium content, and it is also rich in trace elements.

In the process of compiling, the plastic, stone, porcelain and other components in the silt were manually removed, and nearly 1,000 man-hours were invested before all the silt was made into compost.

Each compost pile is covered with a layer of plastic sheeting, which is then sealed with fine soil.

After checking the moisture content of the compost piles again, Wei Minsheng believes that as long as the sludge is fermented at high temperatures in summer, the sludge can be fully decomposed, and at the same time, the germs, insect eggs and weed seeds in them will be killed, and the damage of diseases, insects and weeds will be reduced.

After it is taken out in autumn, it can be used to improve the soil compaction in the greenhouses, so that those greenhouses can continue to produce a variety of organic vegetables to meet the increasing living needs of the Minsheng Canteen and the members of Huaxia.

It is foreseeable that if the dredging effect of Nanhu Lake is affirmed by ZF, Minsheng Company can even intervene in the dredging project of the river.

At that time, a steady stream of high-quality organic compost made from domestic sludge will be enough to improve this barren valley into fertile land, even without the use of large amounts of chemical fertilizer.