It's another year "tasteless" Chaohu!

Author:Hefei Daily Time:2022.09.19

Ecological beauty on the shore of Chaohu. Photo by Song Yanjun, all media reporter Song Yanjun

In September of Golden Autumn, the sky is high.

Ascend to the distance, eight hundred miles lakes, waves and light, there are countless wins.

"I can't smell the smell of cyanobacteria this year, and the air is very fresh." "We live here, better year by year, very satisfied!" "The environment of the nest lake is getting better and better. I am particularly happy. "... Walking along the Chaohu Avenue, travelers said one after another.

Candal governance is a worldwide problem, and it is also a major livelihood project!

Let the citizens "see greater changes and smell more changes", Hefei is unsatisfactory!

According to the national satellite remote sensing data, as of the end of August, the maximum and cumulative area of the cyanobacteria in Chaohu Lake District this year decreased significantly compared with the same period last year, and the lake continued to maintain basically no taste of cyanobacteria.

It is another year's "tasteless" Chaohu, and it is not easy to come under high temperature conditions!

The transcript satisfactory to the masses is inseparable from the scientific prevention and control system, the hard work of the salvage personnel, the advanced technical equipment, and the "five major projects" and "four sources".

Schedule the linkage in advance

On the weekend, there are endless streams of tourists in the grassland on the shore in the wetland of the lake.

The beauty of the distant mountains, autumn water, reeds, and egrets is frequently recorded by people with cameras and mobile phones. "In the past, there was a cyanobacteria on the lake, like laminating the layer of‘ green paint ’, the smell was unpleasant! I ca n’t see it now, and the air is very fresh!” Citizen Zhou Aiyun sighed.

Citizens are close to nature at the Hefei Lake Bin National Wetland Park. All media reporter Zhang Dagang

Behind the beautiful, there are always people guarding. Outside of the wetland coffee wealth not far from Zhou Aiyun, Meng Fanzhang, a cyanobacteria prevention and control staff, drove the charge boat to inspect the shallow beach and reeds. "We inspect the lake shoreline every day and find the cyanoscopy and deal with it in time."

The city's cyanoscopy prevention and control, Baohe District is one of the main battlefields. This year, the district prepared early, deployed early, and acting early, and there was no obvious water in the jurisdiction. "The district implements grid management of the coast of Chaohu, and is divided into 11 responsible regions to clarify the person in charge of the district scheduling and salvage personnel and inspection personnel." Zhang Congjin, deputy director of the Baohe District Ecological Environment Branch.

Master the algae for the first time and timely dispatch and disposal. Based on the focus of prevention and control and sensitive areas, the area has set up 34 algae and odor monitoring and inspection points to deploy the full coverage of drones and cruise without dead ends along the lake. Discovery abnormalities, salvaging companies, street town communities and other linkage disposal, Nissan Riqing. "Every day there are nearly 200 blue algae prevention and control staff on the sun and high temperatures, and stick to the front line." Zhang Congjin said.

On July 4th, the pusher on the coast of the Chaohu Lake was constantly turning to flow the water body, so that the cyanobacteria did not gather by the shore. Photo by Song Yanjun, all media reporter Song Yanjun

Candida prevention and control fights, encounters every year.

Forewarned is forearmed, without prejudging the waste. This year, the city has strengthened the "territorial management, hierarchical responsibility, scientific early warning, timely response, departmental linkage, and social participation" prevention and control system, and comprehensively improve the emergency response ability of Chaohu Lake.

"As early as March, the city was dispatched and arranged in advance, requiring various localities and departments to further implement responsibilities, refine measures, match personnel, facilities, and equipment, and do a good job of adding, maintenance, and maintenance of various types of salvage facilities in advance. From the 1st, the emergency prevention and control work of the cyanoscopy officially opened. "The relevant person in charge of the Municipal Ecological and Environment Bureau said.

The city establishes a third -level grid prevention and controlling and salvage responsibility system, divides 5 first -level grids, 18 second -level grids, and 65 3 -level grids; establish a municipal inspection supervision mechanism, normalize on -site inspections, urge all places to urge localities Based on the level of cyanobacteria early warning, timely strengthen inspections and salvage.

Candida salvage personnel risen at high temperature and do their best to do the salvage work of Chaohu Lake (Data Map)

This summer, Hefei exceeded 35 ° C, 37 ° C, 38 ° C, and 39 ° C. The number of high temperatures of 39 ° C reached 47 days, 25 days, 19 days, and 9 days, respectively. He was ranked first since Hefei had a meteorological record in 1952.

Don't be afraid of the sun, not afraid of heat waves, sweat like rain, and protect the "tasteless" Chaohu.

Data show that from April to August of this year, the counties (cities) of the lake displaced 6,1285 person -times in a total of 6,1285 personnel, 8902 ships were dispatched, and more than 780,000 tons of algae paste were salvaged, generating more than 7,000 tons of algae mud.

Compared with the same period in 2021, the dispatched salvage personnel and ships increased by 13.62%and 54.41%, respectively, and the cowhide paste and the production of algae mud treatment of algae paste decreased by 40.90%and 40.99%, respectively.

"The decline in the amount of salvage of cyanobacteria shows that the emotions near the shore this year have improved further." The relevant person in charge of the Municipal Ecological Environment Bureau said.

Matching all -in -equipment equipment to prevent and control

Regardless of the old methods, new methods, "stupid" methods, as long as it is used, it is a good way.

On September 17th, more than 20 workers were still adhered to in the prevention and control section of the Cymbarium of the Coriander Park in Hefei Binhu National Forest Park!

Here is a newly invested algae control platform that can handle 100,000 cubic melon water every day. 51 -year -old Xu Yegui is the person in charge of the operation and maintenance platform of the deep well -controlled algae control platform. Since joining the cyanobacteria prevention and control team in 2015, he has "fighting" the ancient creatures on the planet and witnessed the effectiveness of the prevention and control of cyanobacteria.

After exposure for a summer, Xu Ye's skin color was dark. Beying next to him, the sound of "rushing" caused by the inhalation of the lake in the deep well was endless. "Now the technology is developed, the prevention and control efficiency is high, and the effect is good! This deep well is 80 meters deep. The processing capacity is more than 30 times higher than the original salvage platform. Xu Yegui said deeply.

Xu Yegui introduced the working principle of the algae control platform of Shenjing. All media reporter Hua Xinhong Photo

Hefei Impression Binhu Tourism Investment Development Co., Ltd. Deputy Minister Zeng Liang introduced that the Shenjing algae control platform uses 0.5 ~ 0.7MPa pressure to destroy the pseudo -empty bubbles in the cyanobacter cells, so that it will lose its floating ability to sink into the water body. Deadly under conditions and naturally disappear. At the same time, the algae control platform of the deep well can aerate the water body to increase the oxygen and improve the water environment.

"We have more than 20 people in this paragraph, and they have been on their jobs in April. Summer continues to be high temperature, very hot! But everyone has not retracted, and it will be processed when they see algae! This year's cyanoscopy has been much less than in previous years, so their work intensity is the easiest in recent years.

Drive to Paihe Bridge near the Paihe Bridge, and a blue algae caught boat with a blue -bottomed white body is mocking on the water. This is another new "heavy weapon" in Baohe District. "There are no cyanobacteria on the lake in the past two days, so the ship is in a state of stopping." Hao Zhengyun, the project manager of Anhui Reyk Environmental Technology Co., Ltd., Anhui Rick Environmental Technology Co., Ltd.

Candida Magnetic Catcher

Compared with the fixed -depth of the deep well -controlled algae control platform, this mobile cyanobacteria magnetic catcher is more flexible, and its role in the prevention and control of cyanobacteria cannot be underestimated. "It is like a moving sewage treatment plant." Liu Biao, the person in charge of Baohe District Magnetic Catcher Salva Salva Salva Said, said that the magnetic catcher uses mineral matrix magnetic micro -mesh materials to use pollutants such as nitrogen phosphorus and cyanoba in the water body After the flocculation, the external magnetic field of the permanent magnet device is used to quickly adsorb the magnetic floccopy.

"As long as we find that there are cyanobacteria on the water, we will deal with it in time to eliminate the cyanobacteria in the bud." Hao Zhengyun introduced that a set of magnetic boat capture equipment can produce nearly 90 tons of algae mud a day. The algae mud will be transported to the back -end processing plant for fertilizer supply to the nursery base to achieve waste utilization. "We have been working in August and have produced more than 400 tons of algae mud. There are currently 6 magnetic catcher in the lake, and this year has produced more than 3,000 tons of algae mud. In the case of increased the number of magnetic catcher, this processing ratio ratio is increasing. Last half of last year, it means that the water quality of Chaohu is getting better. "

If you want to be good, you must first benefit your instrument.

It is understood that at present, the city has basically constructed a nest of the cyan lake cyanobacteria water Huahua emergency treatment facility based on the cyanosaidal treatment device and the algae water separation station.

"In 2022, 5 new high -pressure algae -in well wells in the city, 2 new magnetic ship -catching ships, 10 aeration ships, 1 algae control boat, and the emergency prevention and control capabilities of Chaohu Lake have been further improved." The relevant person in charge of the Municipal Ecological Environment Bureau introduce.

At present, there are 5 algae water separation stations around the lake, with a processing capacity of 18,000 tons/day, and 8 seals of the green algae deep well processing device with a processing capacity of 786,000 tons/day. Essence

Changlinhezao separation from the outer scene. Chen Zhen Quan Media Reporter Guo Ruqi Photo

Specimen and cure for a long time

The governance of cyanobacteria must be cured.

Candida, also known as blue bacteria, is the simplest and most primitive primary creature, which has existed on the earth for more than 3 billion years. In encountering the right temperature and nutrient -rich water body, the cyanobacteria will multiply a lot. Once you gather hypoxia and die, the odor will begin to diffuse. Making the water quality of Chaohu Lake as soon as possible is the root cause of cyanobacteria governance.

The nest lake pollution problem, on the surface in the "lake", the root is "outside the lake". In recent years, the Hefei system has implemented the "five major projects" of blue water, Anlan, ecological restoration, green development, and enriching the people, and vigorously promoted the "four sources of the four sources" of dot sources, line sources, facial sources, and endogenous. Lost the "hotbed" of growth.

—— "Point Source", the sewage interception is used as the number one project, and 26 urban sewage treatment plants have been built, with a daily processing volume of 3.25 million tons. 575 village -level sewage treatment facilities were built to achieve full coverage of sewage treatment of beautiful rural central villages. —— "Line Source", based on the principle of "governing the river", strengthens the protection of heavy pollution rivers and the protection of water -type river banks, and promotes a river to the lake. The governance of the Nanzhu River, Zhaohe and other 52 tributaries and tributaries, totaling 820 kilometers; comprehensively promoted the protective governance of clear water types such as Baishi Tianhe and Zhaohe.

—— "Noodle source", 120,000 acres of land is transferred in the Chaohu First -level Reserve to promote green planting of rice; set the sampling point of 30,740 soil measurement formulas to promote the reduction of fertilizer pesticides and increase efficiency, and achieve negative growth in the use of chemical fertilizer pesticides. Construction of 702 outlets for agricultural film and pesticide packaging waste recycling, and the waste recovery rate is more than 80%.

—— "Internal Source", the nest and lakes are forbidden to arrest, and continue to promote proliferation and release, with a total of 13.3745 million tails of ravioli, ravioli, and catfish; the pilot project of ecological dredging is carried out to improve the water quality of Chaohu.

Our city has also accelerated ecological restoration, the top ten wetlands around Chaohu Lake have been completed, and the construction of the Eighteen Lianxian Ecological Wetland Flood Storage Area is launched. The average daily processing capacity of the top ten wetlands reached 1.2 million cubic meters. 20%~ 30%of ammonia nitrogen and total phosphorus pollutants are reduced, and the water quality is increased by one level, and it is more than III or above.

The Shiba Lianyu ecological wetland flood storage area was shot on September 16. All media reporter Zhang Dagang

Data show that from January to August of this year, the city's main access to the lake rivers all the average water quality has reached the standard. Both are better than water quality assessment goals.

From January to August, the average quality of water quality in Chaohu Lake, West Lake and the whole lake was category IV. The east of Chaohu and the whole lake shows a mild nutritional state, and the western half of the lake is in a moderate nutritional state. Its nutritional index decreases by 2.0, 1.7, and 1.0 compared with the same period in 2021.

"This year, the conditions for the growth of cyanoba in Chaohu for the first time were significantly inhibited. From April to August, the cumulative area of Chaohu Lake Lake Water Huada decreased by 53.4%year -on -year, and the density of algae decreased by 14.2%. The relevant person in charge of the Chaohu Management Bureau of Anhui Province said.

The governance of large lakes is a worldwide problem. It will not be done overnight, and will not be eager to end. "We will use the" Bao Gong Iron wrist spirit "to control pollution, and use the" Yugong Yishan Spirit "for a long time to achieve a long time to achieve the stabilization of the lake stabilization of the Water of the lake, so that the citizens can see greater changes and smell greater changes." The person in charge said.

Lakebin wetland. All media reporter Li Yazhao

Text | Ye Yuting Xu Xiaoling All Media Reporter Hua Xinhong