□ reporter Zheng Songbo Li Jingxin correspondent Zhang Wen Wen, chief reporter Yan Huazhuang figure
Core prompts:
Legend has it that the predecessor of the Jialu River is the chasm, that is, the Chu River Han boundary in the Chinese chess board. Today, the Jialu River has become a "divide" - a divide in Zhengzhou City on the way to create a model (to create a national environmental model city)!
In November 2007, Zhou Shengxian, director of the State Environmental Protection Administration, said during an inspection of the Huaihe River Basin pollution control in our province: "The governance of the Jialu River is a test of Zhengzhou City's ability to govern the environment. Only after the Jialu River is well managed can Zhengzhou City hope to enter the ranks of environmental protection model cities. Jialu River governance, Zhengzhou City, to solve a piece of Huaihuai 'heart disease'."
Thus, the Jialu River has not only become the rule of Huaihuai "heart disease", has also become the Zhengzhou City to create a model environmental protection city "heart disease", then Zhengzhou City can remove the "heart disease" The first time I've ever seen a movie, I've never seen a movie before.
News Review
The Jialu River to cure the model in order to line
In April this year, the provincial government announced the "2008 Henan Provincial Environmental Comprehensive Improvement Implementation Program". In the comprehensive remediation of the watershed environment, Wei River, Jialu River, Huiji River Basin is still the focus of the remediation, while the Jialu River Zhengzhou section, the Wei River Xinxiang section, Huiji River Kaifeng section of the three key watersheds in the key remediation areas. The "program" requires that Zhengzhou, Xinxiang, Kaifeng 3 cities to be based on the current status of pollution in their respective watersheds, to develop special remediation programs, to take practical measures to ensure that the water quality this year, a significant improvement. It is understood that the Zhengzhou section of the Jialu River was also listed as the focus of comprehensive environmental remediation last year.
This is reminiscent of the State Environmental Protection Minister Zhou Shengxian came to Henan to inspect the Huaihe River Basin on the Jialu River governance expectations!
In November 2007, the National River Pollution Prevention and Control Work Conference was held in Zhengzhou, the then State Environmental Protection Administration Secretary Zhou Shengxian deliberately came to Henan in advance to inspect the water quality of the Huaihe River Basin.
On November 13, Zhou Shengxian inspected the water quality of the Huaihe River Basin rivers in the jurisdiction of Zhengzhou City. The Jalu River is a tributary of the Shaying River, which flows into the middle reaches of the Shaying River, and about one-third of the pollution load of the Shaying River comes from the Jalu River. Due to the lack of natural runoff recharge, the Jalu River has become a sewage ditch in Zhengzhou City. In 2006, the average annual COD concentration of the Zhongmou Highway Bridge section of the Jialu River was reduced by 58mg/L compared with that of the beginning of the Ninth Five-Year Plan, and the average annual COD concentration of the Chenqiao section of the Jialu River decreased from 136.5mg/L to 83.2mg/L between 2001 and 2006, and the COD concentration of the Jialu River continued to decrease in 2007, remaining at 60-70mg/L. In 2007, the COD concentration of the Jialu River continued to decline, maintaining between 60 and 70 mg/L. Although there is a great improvement, but the Jialu River water quality is still a concern. Zhou Shengxian deliberately emphasized that: "governance of the Jialu River is the test of Zhengzhou City, the ruling capacity of the environment. Jialu River governance, Zhengzhou City has hope to enter the ranks of environmental protection model city. Jialu River governance, Zhengzhou City, to solve a piece of Huaihuai 'heart disease'."
Zhengzhou model life system Jialu River, Jialu River, why such a special position?
Li Jingming, now inspector of the Henan Provincial Environmental Protection Bureau, served as deputy director of the Environmental Protection Bureau for many years, the situation of the Jialu River is well known. He told reporters: "Jialu River is the upper reaches of the Shaying River, Shaying River Huaidian gate section is the province to Anhui's exit section, but also the state-controlled section, installed online monitoring equipment. The national assessment of the province's Huaihe River basin management is to assess this section. Zhou Shengxian minister said that only the success of the Jialu River governance Zhengzhou City model to succeed and is not unfounded, one of the standards of the national environmental protection model city is that the water quality of urban waters functional areas to meet the standard rate of 100%, and the city has no inferior class V (COD at 40mg / L or more) water bodies. And Jialu River COD, ammonia nitrogen and other indicators are inferior V. Therefore, the governance of the Jialu River is not only related to the State Council's assessment of the province, but also related to Zhengzhou City's modeling work."
Field visit
Three major streams of sewage dirty Jialu River
The management of the Jialu River can not be understood without first understanding where the sewage in the Jialu River comes from.
The Jialu River is a secondary tributary of the Huaihe River, originating in Xinmi City, flowing through the northwestern part of Zhengzhou City, Chenqiao exit in Zhongmou County, to Zhoukou City into the Shaying River. Jialu River Zhengzhou section is 137 kilometers long, with a watershed area of 2,750 square kilometers, daily acceptance of Zhengzhou City and Zhongmou County 700,000 to 800,000 tons of domestic and industrial sewage. Although known as the river, but the Jialu River has no live water source, its water source all from domestic and industrial sewage.
Zhengzhou City, the current sewage treatment rate can reach 85%, the vast majority of sewage can enter the sewage treatment plant after treatment and then discharged, but there are three streams of sewage without any treatment is directly discharged into the Jialu River. Where does this sewage come from, how to discharge into the Jialu River? The reporter made a field visit.
On April 13, the reporter and Zhengzhou Environmental Protection Bureau monitoring brigade chief Zhou Zheng together to the Zhengzhou High-tech Industrial Development Zone, in the Science Avenue bridge northwest of the field, to find the direct discharge of the Jialu River's first stream of sewage - Wawareri Minggou. This ditch is seriously silted up, the ditch sewage is gray-black, floating on the surface of a variety of garbage, flow from west to east. In addition to the Waya Li ditch, the bridge from south to north there is a wider sewage ditch, the two ditches in the Science Avenue Bridge to the north of about 50 meters of the place to converge, and then north into the Jialu River. Zhou Zheng told reporters: "Waya Li ditch discharge of sewage is mainly high-tech zone of domestic sewage, the flow of about 40,000 tons per day, another ditch is mainly chemical road around the area of domestic sewage, the flow of about 30,000 tons per day. These two streams of sewage without any treatment, COD concentration are in the 200mg / L or so."
The reporter rushed to the new 107 National Road Qilihe Bridge. Standing about 10 meters high on the bridge can smell the fishy smell of sewage. Sewage foaming with white foam from the west to the east flow, which is directly discharged into the Jialu River, the third strand of sewage. Zhou Zheng said: "The water here is mainly Xinzheng Longhu Town's domestic sewage, is also not treated, directly discharged into the Jialu River. The flow here is also several tens of thousands of tons per day."
And in the Jalu River Zhongmou Highway Bridge, the river appears clear and clean, the wheat seedlings on both sides of the river, rape grow vigorously. "This is because the water from Zhengzhou sewage treatment plant discharged into the Jalu River, mixed with sewage, the water quality looks much improved. So to manage the current Jalu River you have to manage the three streams of sewage we see."
Latest data
Ammonia nitrogen did not meet the standard in the first four months of this year
The reporter learned from the Henan Provincial Environmental Protection Bureau, from January to May this year, the Jialu River Zhongmou Chenqiao cross section of the COD cumulative compliance rate of 81%, ammonia nitrogen of the cumulative compliance rate of only 23.8%, and ammonia nitrogen did not meet the standard from January to April this year.
It is understood that from 2001 to 2004, the state of the Jialu River set the target value of COD is 100mg / L, 2005 is 95mg / L, 2006 is 85mg / L, 2007 is 85mg / L, 2008 is 75mg / L. The state is in accordance with the goal of Zhengzhou City, the assessment. The results of testing against this target value are: 124mg / L in 2002, 112mg / L in 2003, did not meet the national control objectives. From 2004 to 2007, these years have reached the national control objectives, in 2005 is 76mg / L, 2006 is 83.2mg / L, 2007 is 75.3mg / L. As for ammonia nitrogen, the national assessment began in 2000 (2007 before the reference indicators, and then for the assessment of the indicators), set the standard in 2005 is 25mg / L, 2006 is 20mg / L. In 2006, it was 20mg / L. In 2007, it was 20mg / L. In 2006, it was 20mg / L. In 2006, it was 20mg / L. The standard was set at 25mg/L in 2005, 20mg/L in 2006, 20mg/L in 2007, and 15mg/L in 2008, and the ammonia nitrogen in the Jialu River has been maintained at the level of about 30mg/L for the past few years. From last year to this year's ammonia nitrogen test results, the entire Jialu River water quality ammonia nitrogen compliance rate is low, especially this year, the compliance rate is even lower.
The biggest problem
Urban expansion of the rapid de-nitrogenation facilities less
From the above data can be seen, COD standard has not been a problem, and high ammonia nitrogen data, is the biggest problem facing the Jialu River.
Yang Zhaojian, deputy director of Zhengzhou Environmental Protection Bureau, introduced in recent years, Zhengzhou City, a rapid increase in population, the rapid development of tertiary industry, the total amount of sewage discharged from urban life year by year, which is the main reason for the increasingly high levels of ammonia and nitrogen content in sewage.
He said that the governance of the Jialu River began in the 1990s. Before 2000, there were about 3250 industrial enterprises in the entire Huaihe River Basin, of which 2990 were water-polluting enterprises, all of which had no pollution control facilities. It can be said that the water in the Jialu River is untreated sewage. 2000, Zhengzhou City began to close the "fifteen small" enterprises, more than 200 were closed that year. From 2000 to 2003, Zhengzhou City, not environmental protection requirements for the closure of enterprises, while requiring the retention of enterprises must build sewage treatment facilities, the water quality of the Jialu River has gradually improved, but the degree is not obvious. With the national and provincial requirements for the management of the Jialu River more and more high, the construction of urban sewage treatment plant began to be included in the agenda. 2001, the end of December, the daily capacity of 400,000 tons of Wang Xinzhuang sewage treatment plant into operation, which is the first sewage treatment plant in Zhengzhou City.
But during this period, the situation has changed a bit, Zhengzhou City, rapid expansion, the city's population continues to increase, the rapid development of tertiary industry, the amount of urban sewage discharged into the Jialu River in the year-on-year increase in the amount of pollution is also increasing year by year. It is estimated that the daily discharge of sewage in Zhengzhou city is about 1 million tons, domestic sewage has accounted for 70% to 80% of the total amount of sewage discharged, and the COD concentration has also increased significantly, such as Zhengzhou City, the tertiary industry catering, bathing discharged effluent COD reached a maximum of 800 to 900mg / L. According to the data provided by the sewage treatment plant, the minimum concentration of influent COD is also in the 300mg / L, high time is nearly 500mg / L. The water is also the lowest concentration in the sewage treatment plant. In response to this situation, Zhengzhou City has built the Wulongkou Wastewater Treatment Plant, Matougang Wastewater Treatment Plant, Zhongmou Wastewater Treatment Plant. Sewage treatment rate from zero in 2000 to the current 80% to 85%, has exceeded the standard of modeling, the basic solution to the problem of COD.
But new problems have arisen, starting last year, the state of ammonia nitrogen concentration of trial assessment, this year will be included in the official assessment of ammonia nitrogen, ammonia nitrogen problems are also mainly domestic sewage, Ma Tougang sewage treatment plant nitrogen removal treatment capacity is 300,000 tons / day, Wulongkou is 100,000 tons / day, but the construction of earlier Wang Xinzhuang wastewater treatment plant does not have denitrification facilities, which results in the Jialu River, ammonia nitrogen The problem is more prominent.
Li Jingming also holds the same view, he said: "Zhengzhou sewage treatment plant is the biggest problem is the construction of nitrogen removal facilities lagging behind, according to the plan of the Wang Xinzhuang wastewater treatment plant nitrogen removal facilities in 2005 should be built, but due to land acquisition reasons, to the present is not built. At present, Ma Tougang sewage treatment plant, five Longkou sewage treatment plant nitrogen removal facilities are still in the debugging, the treatment effect from the national requirements there is still a certain distance, and later on how to run, but also depends on the debugging situation."
The latest program
"Engineering" and "ecological" with the treatment of the Jialu River
Now the Zhengzhou Municipal Government proposed to build a "big Zhengzhou", one of the important criteria is the population. One of the most important criteria is the population. It is expected that by 2020, the population of Zhengzhou City will reach 10 million, the construction of urban sewage treatment plant is expensive, long cycle, obviously can not catch up with the speed of population expansion. The management of the Jialu River only rely on this trick is obviously not enough.
In March 2008, the Zhengzhou Municipal Government formulated the "Zhengzhou City, 2008-2010 Jialu River Basin Water Pollution Comprehensive Remediation Implementation Program", the use of the construction of sewage treatment plants "engineering therapy" and the construction of artificial wetlands "ecological therapy" combined approach. The program adopts the combination of "engineering therapy" of constructing sewage treatment plants and "ecological therapy" of constructing artificial wetlands to manage the Jialu River.
According to the "program", by the end of this year, Zhengzhou City will be in the Jialu River in the territory of the County of Zhongmou construction of artificial wetlands, the use of ecological self-cleaning function, to further reduce the pollution load of the Jialu River. By 2010, the Jialu River Zhongmou Chenqiao cross-section of the water quality COD concentration can reach 50mg / L, ammonia nitrogen concentration can reach 10mg / L. Zhengzhou City, also plans to carry out artificial wetland treatment of sewage in the Jialu River River research work, in order to build urban sewage treatment plant based on exploring an economical and practical approach to sewage treatment.
Zhengzhou City will also build the second phase of the Wulongkou Sewage Treatment Plant (mainly to collect sewage from the high-tech zone, the Chemical Industry Road around the life of the sewage, i.e., Wayauli Minggou, Chemical Industry Road Minggou sewage), Chen Sanqiao Sewage Treatment Plant (mainly to deal with sewage around the town of Longhu in Xinzheng, i.e., the seven miles of sewage), in order to effectively cut down on the water pollution load of the Jialu River. The construction of the two plants has already begun. Wang Xinzhuang sewage treatment plant will also make appropriate improvements to the sewage treatment process, so that it has a certain de-nitrogenation capacity to cut the Jialu River ammonia and nitrogen pollution load.
In addition, Zhengzhou City will deepen industrial pollution prevention and control, and deepen the treatment of enterprises that cannot meet the requirements of total volume control and water environment quality objectives. In accordance with the state's newly promulgated "beer industry pollutant emission standards" of the relevant requirements of the beer industry, all the beer industry issued a deadline for treatment. At the same time, the province's chemical (fertilizer) industry is about to introduce a new local standards, to be introduced after the introduction of new standards, Zhengzhou City, in accordance with the requirements of the new standards for fertilizer production enterprises to carry out in-depth treatment, which can effectively reduce the concentration of ammonia nitrogen.
Yang Zhaojian told reporters that, from the prospect, Jialu River will be better, Zhengzhou Municipal Government has just passed the "Zhengzhou City, the planning of ecological water system construction". There are a few predictable good news: one is that the South-North Water Transfer is going to pass through Zhengzhou, increasing the amount of net water in Zhengzhou, and the second is that the South Canal is going to be excavated later this year. The Yellow River water used in Zhengzhou is far from the amount of water given by the State Council. With the construction of Longhu and Longzi Lake, the Yellow River water will be introduced into the Dongfeng Canal in the future, and the water from Longhu Lake will eventually flow into the Jalu River so that the Jalu River will have a source of clean water. For the management of the Jialu River is estimated to be 3 to 5 years will see obvious results.
Nouns Explained:
COD (Chemical Oxygen Demand), is under certain conditions, the use of a certain strong oxidant treatment of water samples, the amount of oxidant consumed. It is an indicator of how much reducing substances in water. Reducing substances in water are various organic matter, nitrite, sulfide, ferrous salts and so on. But the main one is organic matter. Therefore, the chemical oxygen demand (COD) and often as a measure of how much organic matter in the water as an indicator. The greater the COD, the more serious the pollution of the water body by organic matter.