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“Some places don’t pay enough attention, and there are too many extravagances and less practical work. Some places are sprayed with medicine, some places are covered with plates, and water is transferred to flush the sewage. The so-called ‘smart approach’ was once very popular.”
1moon24day,Ministry of Ecology and EnvironmentHold monthly press conferences,Ministry of Ecology and EnvironmentZhang Bo, chief engineer and director of the Department of Water Ecology and Environment, made the above statement when talking about the problems existing in the treatment of black and odorous water bodies.
The reporter of “Daily Economic News” noticed that the control of black and odorous water bodies has always been an important supervision content of the central environmental protection inspector. In the past three years, the control of black and odorous water bodies in cities has been intensive and achieved very good results. However, in some areas, black and odorous water bodies have returned to black and odorous after treatment, which has become the focus of attention.
Zhang Bo introduced that in the past three years of black and odorous water treatment, according to incomplete statistics, the direct investment has exceeded more than1.5Trillion yuan, to a certain extent, stimulated economic growth. However, the progress of this work is uneven. In some places, the black and odorous water bodies have not been solved, or the symptoms have not been solved, and the original shape has appeared after a rain.
In some places, the problem of “holding dirt” in rainwater pipes is serious
Zhang Bo introduced that black and odorous water is a prominent ecological and environmental problem around the masses, and its essence is the problem of the direct discharge of sewage and garbage. No matter how bright the appearance of any city, as long as there are black and odorous water bodies, it means that the construction of environmental infrastructure is not in place and unqualified.
“After years of hard work, it should be said that90%The above black and odorous water bodies solve the black and odor problem relatively stably. “Zhang Bo said, but in some places, the management of black and odorous water bodies has the problem of treating the symptoms rather than the root causes, which often appear after a rain.
According to Zhang Bo, some cities have spent a lot of money on the surface, but the quality of work and the quality of pipe network collection is not good. The pipe network collects not sewage, but rainwater and groundwater. The concentration of urban influent water is very low, and it basically reaches the standard without treatment, which shows that the work is not solid.
In some places, the urban sewage sanitation management is not solid, and the urban large-scale food stalls often dump some sewage and garbage into the rainwater grates, and even the environmental cleaning garbage is poured into the rainwater grates.When it rains, black and odorous water bodies come out. In some places, the initial rainwater chemical oxygen demand concentration is as high as2000mg/liters, the general domestic sewage is only300multimg/liters, visible storm drain“hide filth”The problem is serious.
“There are still some local economic policies that are not in place. The state’s three-and-fifth application of sewage and waste, and charging policies must be in place, and they must basically cover all costs. However, so far, some local policies have not been in place, and the charging mechanism has not been implemented. Therefore, the role of the market does not play a role. When it comes out, the financial strength is stretched again, which makes it difficult to establish a long-term mechanism for the entire sewage collection and treatment facilities.” Zhang Bo said.
295Black and odorous water bodies in prefecture-level and above cities are basically eliminated
Zhang Bo introduced, “fourteen five”The ecological and environmental protection work has got off to a good start.1064All industrial parks have built centralized sewage treatment facilities, accumulatively built6.6210,000 kilometers of sewage pipe network.295The black and odorous water bodies in prefecture-level and above cities (excluding prefectures and leagues) are basically eliminated.
At the same time, the ecological environment department will12000A number of centralized sewage treatment facilities have been included in environmental supervision, and the centralized collection efficiency of urban domestic sewage has been significantly improved.Keeping an eye on the rectification of the Yangtze River warning film, the disclosed484problem, rectification has been completed437Piece.
In strengthening the supervision of the ecological environment of nature reserves, the Yangtze River Economic Belt11Provincial and municipal nature reserves found rectification problems2654, rectification completed2374Piece.Carry out pollution control of tailings pond“look back”, the preliminary investigation found2100A number of environmental problems are being promoted to be rectified while being investigated.
At the same time, various localities and departments have continuously strengthened the protection of drinking water sources, and have planned and established township-level centralized drinking water source protection areas.19132To further consolidate and improve the standardized construction of centralized drinking water sources in cities above the county level, to ensure the safety of drinking water for the masses.
According to statistics, 2021In 2018, the proportion of water bodies with excellent water quality in the country was84.9%, the proportion of water bodies that have lost their use function is1.2%, successfully completed the annual goals and tasks, and the quality of the water ecological environment maintained the momentum of continuous improvement.2021The proportion of state-controlled sections with excellent water quality in the Yangtze River Basin is97.1%, a year-on-year increase1.2percent, the water quality of the main stream of the Yangtze River2020For the first time this year, the annual average across the board reachedIIclass for two consecutive years.
“Although remarkable achievements have been made in water ecological environmental protection, the problem of unbalanced and uncoordinated work is still prominent. A few areas have eliminatedVSimilar cross-sections are very difficult, with serious non-point source pollution in urban and rural areas in some areas, frequent occurrence of cyanobacterial blooms in some key lakes, and serious ecosystem imbalances that need to be solved urgently. “Zhang Bo said.
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