Central ecological environmental inspectors uncovered a body of water between the two cities to return back to black smelly reasons behind the


　　long river system useless Heze black-odor water treatment palliative Changchun part of the river is not a cure

　　□ Our reporter Yan Jianrong

　　The river length system in some sections of the river is in vain; the treatment of black and odorous water bodies does not cure the symptoms but not the root cause.

The second round of the fourth batch of the central ecological and environmental protection inspection team (hereinafter referred to as the inspection team) in the second round of inspections in Jilin and Shandong provinces found that Changchun City, Jilin Province and Heze City, Shandong Province have serious problems with black and odorous water bodies returning to black and odor .

　　In September of this year, when the inspection team inspected the two provinces, they conducted sinking inspections of Changchun City and Heze City respectively.

The inspection team found that Changchun City “although some river sections have established district and sub-district river lengths, the river length system for some sections is useless.” Heze City only uses river dredging, temporary pollution interception, and ecological water replenishment. To complete the task of remediation and reaching the standard in a permanent way.

　　While publicly exposing the black and odorous water bodies in the two cities to turn black and smell back, the inspection team also deeply reminded the reasons behind it.

The inspection team stated that the implementation of the long-term control mechanism in Changchun City is obviously not in place, and there is a problem of dereliction of duty and responsibility.

But Heze City was criticized for inadequate promotion of the black and odorous water body, and the rectification task was not fulfilled.

　　Long-term control mechanism is not in place

　　According to the inspection team, in 2015, Changchun City identified 75 black and smelly water bodies with a total length of 236 kilometers, including Yongchun River, Chaihu Zhang Dark Canal, Nanxi Wetland Housanjiazigou, Fusong Minggou, Luyuan Minggou, and Zhaijia Minggou and others are on the list.

After inspection and rectification, at the end of 2018, Changchun City reported to confirm that all the 75 water bodies had eliminated the black and odor.

　　In September this year, when the inspection team inspected the sinking of Changchun City, it was discovered that after the black and smelly water treatment in Changchun City passed the examination and acceptance in 2018, due to the lag in the construction of water environment infrastructure and the inadequate implementation of long-term control mechanisms, some water bodies returned. Black back odor.

　　On-site sampling and monitoring by the inspection team showed that the chemical oxygen demand, ammonia nitrogen, total phosphorus, and dissolved oxygen concentrations of the Housanjiazigou water body were 228 mg/L, 23.7 mg/L, 3.26 mg/L and 0 mg/L, respectively, which were severely black. Smelly; the ammonia nitrogen concentration of Junzi Lake in Nanxi Wetland is 9.57 mg/L, which is a mild black smell; Fusong Minggou, Luyuan Minggou, Zhaijiaminggou, etc. are usually in an anhydrous or low water state, and sewage overflows into the ditch on rainy days Inside, it becomes a sewage ditch.

In addition, the water quality of some of the water bodies that have been treated has continued to deteriorate. Among them, a large amount of silt floating on the surface of the South Fourth Ring Road to Kaiyun Street Bridge of the Yongchun River Water Body and the Chaihu Zhang Underdrain, the water body is turbid, and the peculiar smell is obvious.

　　As for the reasons why these water bodies turned black and smelly, the inspection team also conducted investigation and analysis.

The inspection team pointed out that in 2018, the Ministry of Housing and Urban-Rural Development and other relevant departments issued the "Implementation Plan for the Treatment of Urban Black and Smelly Water Body".

The plan proposes that by the end of 2018, provincial capital cities should achieve the goal of eliminating black and odorous water bodies, and by accelerating the construction of urban environmental infrastructure and improving long-term mechanisms, fundamentally solve the related environmental problems that cause black and odorous water bodies.

However, Changchun City's overall planning for the treatment of some black and odorous water bodies is not in place, and the construction of sewage treatment plants and the transformation of rain and sewage diversion are relatively lagging.

　　According to the inspection team, in order to solve the problems of overloaded operation and sewage overflow of sewage treatment plants in the southern, western and northern suburbs, Changchun City has successively built three temporary emergency treatment facilities for domestic sewage with a total of 93,500 tons/day since 2018. The average daily water treatment volume is about 80,000 tons. “However, the pollutant treatment efficiency of these facilities is low and the effluent quality is poor.” On-site sampling and monitoring by the inspection team showed that the highest chemical oxygen demand and ammonia nitrogen concentration of the drainage from these facilities reached 209 mg/L and 18.04 respectively. Milligrams/liter, seriously exceeding the standard.

Two sewage outlets under the Zhongheng Road Bridge and under the Guanggu Street Bridge total about 40,000 tons of domestic sewage are discharged directly into the Yongchun River every day.

　　The inspection team saw at the scene that in some areas under the Fourth Ring Bridge, Luyuan Minggou, and Zhonghai Community in Changchun City, a large amount of domestic sewage mixed with rainwater during rainy days, overflowed into the river through open channel overflow weirs, sewage wells, etc.

　　Thousands of tons of domestic sewage are directly discharged

　　In April 2015, the State Council issued and implemented the "Water Pollution Prevention and Control Action Plan" (also known as the "Water Ten Measures").

According to the requirements of the "Water Ten", by the end of 2020, the elimination rate of black and odorous water in built-up areas in cities above the prefecture level should be higher than 90%.

　　Heze City, Shandong Province is located in the Huai River Basin, and the water environment quality is of great significance to the improvement of the water quality in the Huai River Basin.

In October 2018, Heze City was selected as one of the first batch of demonstration cities for the treatment of black and odorous water bodies in the country.

In 2016, before being selected as the first batch of black and odorous water treatment demonstration cities in the country, Heze City issued a list of urban black and odorous water bodies and determined that the built-up area has 3 lakes and 8 rivers, including Qingnian Lake, Shuangyue Lake, Waihudi River, and Jingsigou. 11 black and smelly water bodies.

　　According to the inspection team, when applying for a demonstration city in 2018, Heze City compiled the "Implementation Plan for Urban Black and Smelly Water Remediation."

The plan proposes five major types of treatment projects, including sewage treatment capacity building, source control, interception and pipe management, river dredging and dredging, and it is clear that sewage interception and dredging projects will be completed in 2019; a long-term cleanup will be achieved in 2020; With the total investment basically unchanged, the project is optimized and adjusted to 155 items in 5 categories.

　　In September of this year, the inspection team found out that Heze City had not completed the well-defined governance project when it sank in Heze City.

Among the 155 governance projects, 44 projects were not required to be completed by the end of 2020 in order, involving half of the total project investment, of which 17 projects had not been completed as of the time when the inspector was stationed.

　　"The old city of Heze is a rain-sewage confluence area. The sewage is upgraded to the first sewage treatment plant through the Chengyang Road Pumping Station. However, due to the blockage of the pipeline network at the back of the pumping station, the old urban sewage can only pass through the overflow outlet for a long time. Row the young people in the lake east pit.” The inspection team said that according to the renovation plan, Heze City should build a fifth sewage treatment plant before the end of 2020 to solve this problem.

However, in June 2021, the inspection team discovered that thousands of tons of domestic sewage are still discharged directly into Qingnian Lake every day. As of September this year, the fifth sewage treatment plant had not yet been completed when the second round of inspectors moved in.

　　The Donggou of Juyang Road in the urban area merges into the Qili River from south to north, and is one of the main pollution sources of the Qili River.

"In June 2021, the inspection team discovered that there are still many direct sewage outlets along the ditch, garbage in the ditch is full, and the black smell is serious." The inspection team said that until September this year, the relevant departments of Heze City did not Started construction of sewage interception pipelines along Juyang Road.

　　According to the national surface water assessment section ranking data of cities at the prefecture level and above, Heze City did not appear in the list of the bottom 30 cities in the country before May 2020, but it will directly fall back to the bottom of the country by August 2020. After 2020 From October 2010 to May 2021, it ranked among the bottom 30 cities for 8 consecutive months.

The inspection team said that since the beginning of this year, more than half of the 17 cross-sections (8 national-controlled and 9 provincial-controlled) in Heze City have exceeded the standard, and 8 of them have appeared 15 (months) times. To be inferior to Category V.

　　The river length system in some sections of the river is in vain

　　According to the inspection team, during the first round of central ecological and environmental protection inspections conducted in Jilin Province in 2017 and the inspection in 2018, the inspection team received a large number of direct sewage discharges on the Yongchun River, Nanxi Wetland, and Fusongminggou. Or complaints about black and smell-related issues.

Since the second round of inspectors stationed in September this year, the inspection team has received a large number of reports on related issues.

Many people said on the scene that a lot of money, manpower and material resources were invested in the treatment of black and odorous water bodies, but "the symptoms are not the root cause" and the problem of black and odorous water bodies has not been fundamentally solved.

The inspection team spot-checked the return visit and found that the complaints and reports of the masses were basically true.

　　In-depth investigation by the inspection team found that the river length system in some sections of Changchun City was useless.

　　Jilin Province’s "Implementation Plan for the Treatment of Urban Black and Smelly Water Bodies" clearly stated that the river leader system must be strictly implemented, and the river leader must earnestly perform its responsibilities and promptly discover and solve various problems such as floating objects in water bodies and direct sewage discharge outlets; Regular monitoring of black and odorous water bodies is carried out.

Changchun City “although there are district and street-level river chiefs, most of the river chiefs did not find any problems in the process of patrolling the river, and turned a blind eye to the problems of river silt floating, water quality deterioration, and even blackness and smell." The inspection team said that monitoring. The data also failed to reflect the deterioration of water quality in some water bodies, or even turning back to black and smelly.

　　The inspection team pointed out that in 2018 and 2019, Heze City reported the completion of the annual task target for black and odorous water remediation in two times, and passed the on-site inspection by the Shandong Provincial Urban Black and Smelly Water Remediation Supervision Team.

However, the inspector found that due to the long-term delay in the remediation task, Heze City adopted a temporary solution to complete the remediation task. Fundamental measures such as source control and pollution interception have not been implemented, resulting in the recurrence of the problem of water bodies returning to black and odor.

　　"In August 2020, the black and smelly waters and the direct discharge of sewage in many places such as Qingnian Lake, Zhushui River and Zhaowang River were exposed; in November 2020, the Office of the Shandong Provincial Ecological Environment 9 water bodies that have been rectified, including the ditch, have turned back to black and smelled.” The inspection team revealed that Heze City once again achieved temporary results by blocking the direct sewage discharge outlet, temporary ecological water replenishment and water exchange, and river garbage salvage. , And passed the "Long-term Jiuqing Expert Review" organized by relevant provincial departments in December 2020.

　　The inspector found that problems such as mixed connection and wrong connection of the sewage pipe network in Heze City, pipe network blockage, and mixed flow of rain and sewage are still prominent. In 2020, the collection rate of urban domestic sewage in Heze City is only 51.9%. There are still 53 kilometers of combined rain and sewage pipe network in the area.

　　The inspection team stated that according to the monthly monitoring results of the black and smelly waters in the built-up areas of Shandong Province, since March 2021, the waters in Heze City have returned to black and odor every month. Among them, 6 in the province have returned to black and odor in April. Among the smelly water bodies, Heze City accounted for four.

In June 2021, the inspection team discovered that some sections of the Xiaohei River and other water bodies were severely black and odorous.

In addition, the inspector also discovered that a 600-meter-long black and odorous water body in Heze High-tech Zone directly flows into the Diaotun River. There are more than ten business stores along the line and the domestic sewage of Hexin Auto City is directly discharged, and the water body is seriously black and odorous.