Pei Yanbing was depressed in his heart, and said in his heart, you don't play cards according to the routine?

"Mr. Yu, what you said is very realistic, and it is also a very realistic problem, I think our Director Liu is also a very headache for this problem!

You sprinkle some muck, it's good to clean up, but if you spill the stinky mud and black water on the road, our sanitation workers may have to scold your mother!" Zhang Hua took over and said with a smile.

"Mayor, what Mr. Yu mentioned is really not a trivial problem!

If the road is sprinkled with stinky mud and black water during construction, our Environmental Sanitation Bureau will really not be able to do it!

The people still have to block our door?" said Liu Qiyao of the Environmental Sanitation Bureau with a bitter face.

"Mr. Yu, I think since you put it forward, there must be a solution! Don't sell it, just say it happily!" Zhang Hua looked at Yu Qingyang and smiled.

"There is now a sludge dewatering and solidification equipment on the market!

As long as the current construction process is changed slightly, the sludge is transported to the dewatering and solidification point through the pipeline, and then transported to the designated storage point by muck truck after the water removal and solidification!" Yu Qingyang said very simply.

River dredging can be roughly divided into two categories, dredging with water and dredging without water.

Specific to the construction process, it is not complicated, the dredger excavates the silt at the bottom of the river, some of them transport the silt to the beach through the pipeline for blowing, and some of the dredgers bring their own transportation and transport them to the designated location for storage. There is also a flatbed boat with an excavator on it, which directly digs the silt from the river, and then loads it onto the boat that transports the silt and transports it away.

The advantage of this construction process is that there is no need to cut off the flow and there is no flood control pressure. The disadvantage is that because the silt is at the bottom of the river or lake, the construction technology that has been popularized at this stage cannot achieve the purpose of complete dredging. Of course, there are also human factors in incomplete dredging.

The other is to break the flow and dredging, after the cofferdam is broken, the water in the cofferdam is drained, and then the silt is cleaned out with an excavator, loaded and transported away, and the construction technology adopted by the Municipal Water Conservancy Design Institute is this.

There is also a process of broken flow dredging, which also needs to drain water, but it is not necessary to drain all the water, only need to reduce the water level, and then use high-pressure water guns, mud pumps and other equipment to suck the silt away, this process is the same as the old high-pressure flushing and suction operation principle of the dredger. However, this process cannot be used for urban river dredging due to site constraints.

The Municipal Water Conservancy Design Institute uses the sectional dredging process of the broken flow excavator, and there is a certain selfishness, which Yu Qingyang did not point out.

Because whether it is the use of a cutter suction dredger or an old-fashioned high-pressure suction winch dredger, the enterprises under the Municipal Water Conservancy Bureau do not have these equipment, which means that the dredging construction of the old canal has nothing to do with them. You must know that there is a dredging department directly under the Water Resources Department in Jeju City, and they will compete fairly, but they will definitely compete with the dredging department of the Huanghuai Project, which has ships and people and technology, which they absolutely cannot tolerate.

Yu Qingyang knew their selfishness, but he didn't point it out, working at the door of other people's homes, he always had to leave food for others, at least he couldn't exclude people from the design, so everyone's face was not good-looking.

Yu Qingyang said that the sludge solidification and water removal technology is not complicated, that is, to add a filter centrifugal pump, with a high-pressure water gun or high-pressure waterjet to mix the silt at the bottom of the river and the river water together, and then use the mud pump to pump up, after the separation of the centrifugal pump, the water in the mud is separated, and the water content of the sludge separated by the centrifugal pump is far lower than the silt dug out directly by the excavator.

The cost is higher than that of direct excavator excavation, but it can effectively avoid secondary pollution and damage to the urban environment.

"Mayor Zhang, leaders, you may feel that I am picking on thorns, but in fact, I am more depressed than Mr. Liu and Mr. Bai just now! You must know that these conditions or requirements I put forward are all to increase the construction cost!

Are you Jeju city leaders considering giving us a little financial compensation?" Yu Qingyang pretended to be depressed and complained to the Jeju city leaders on the rostrum.

"Don't even think about it, our conditions have been negotiated a long time ago, and besides, these requirements are not put forward by us!" Zhang Hua categorically vetoed.

"Mayor: Yes, economic compensation is impossible, our Jeju City is not a developed coastal city, and we can't wait to spend every cent of our financial money!" said Yang Yabin, deputy mayor of the Standing Committee.

"Yes, Mr. Yu, we can write a letter of commendation to the Department of Water Resources, and then send your company a pennant of a conscientious enterprise, and then a plaque of a contract-abiding and trustworthy enterprise. Liang Yongchao, deputy secretary-general of the municipal party committee, also joked.

The other leaders then remembered that although Yu Qingyang tried to find faults and thorns, the final result was that they Huayu invested in increasing construction costs, and they all benefited from Jeju City in the end.

"I said leaders, your expression is very bad now, our Jeju is the hometown of Confucius and Mencius, what about the humility and friendliness of your leaders?

"Mr. Yu, rest assured, we people in Jeju City will never forget Hua Yu Investment's help to our Jeju, nor will we let the enterprises that help us develop suffer! In the future, all Hua Yu Investment's investments in Jeju City will enjoy the best treatment!" Zhang Hua smiled and drew a cake for Yu Qingyang.

Yu Qingyang rolled his eyes and didn't speak.

Xindao, who would have come to Jeju to invest without you? Or who would have come to Jeju to make such a large-scale investment without you?

Of course, this cannot be said.

"Director Pei, what I just said about the solidification of water removal equipment is more used in southern cities, you can go and investigate! The centrifugal pump for separating slurry water is much cheaper than the cost of buying a dredger!" Yu Qingyang mentioned Pei Yanbing.

It means to tell Pei Yanbing, don't think that I don't know your careful thoughts, I didn't break it, it doesn't mean I don't know.

Yu Qingyang did not continue to put forward opinions on the design ideas of the Water Conservancy Design Institute, although he wanted to propose new materials and new slope protection processes for river slope protection, but considering the construction cost, Yu Qingyang still endured.

The restoration of the original sub-groove slurry stone retaining wall proposed by the Hydraulic Design Institute is also possible, and most of the retaining walls are below the water level.

The river in this section of the old canal city has two levels of retaining walls.

A sub-trough retaining wall is a retaining wall that sits on the riverbed and is submerged or semi-submerged by the river.

There is also a secondary retaining wall, which sits on the second beach.

This Ertan is not talking about the Ertan Hydropower Station in western Sichuan Province.

Rather, it refers to the tidal land exposed above the water level under the stable water level of the river.