At the construction site of the Wanjiangdong main section of the first phase of the water supply pipe network renovation project, the project leader introduced the project to the research team.
The second stop of the research group came to the Sixth Water Plant to experience the production process of the water supply plant on the spot.
The 5th Southern Metropolis Daily Dongguan Citizen Praise List In-depth Survey
Water supply is the lifeblood of urban construction and development. On December 8, the 5th Southern Metropolis Daily "Dongguan Citizen Praise List" entered Dongguan Water Group to carry out in-depth research. The research group composed of representatives of the Dongguan Municipal People's Congress and members of the Chinese People's Political Consultative Conference (CPPCC) visited the construction site of the Wanjiangdong main section of the first phase of the Dongguan water supply pipe network renovation project (hereinafter referred to as the "first phase of the water supply pipe reform project"), and walked into the sixth water plant (hereinafter referred to as the "sixth water plant") of Dongguan Water Group Co., Ltd. to visit the whole process of tap water production. It is understood that at present, the water supply pipe network renovation of the first phase of the water supply pipe reform project has been completed nearly sixty percent, and it is expected that all water will be completed in the second quarter of next year, which will effectively improve the water quality of more than 90,000 residents.
Stop 1
It is expected that all water supply will be completed in the second quarter of next year
On the morning of December 8, Tang Chaorong, a representative of the Dongguan Municipal People's Congress and an observer of Nandu people's livelihood governance, Wang Qingyu, a member of the Dongguan CPPCC and an observer of Nandu people's livelihood governance, Wei Hongzheng, an associate professor of the School of Law and Social Work of Dongguan Institute of Technology, Hu Bin, a senior engineer of the Daojiao Town Engineering Construction Center of Dongguan City, and Xie Jiangtao, a member of the editorial board of Southern Metropolis Daily, formed a research group to go to the construction site of the Wanjiangdong main section of the first phase of the renovation of the water supply pipe network in Dongguan City to understand the progress of the first phase of the water supply pipe reform project.
At more than 9 o'clock in the morning, the construction site was fenced, and the staff was methodically carrying out the construction and laying the main pipeline with ductile iron pipes. It is understood that on June 27 this year, the first phase of the water supply pipe reform project (Wanjiang bid section) started. Yang Jialong, the project leader of the first phase of the water supply pipe reform project of Dongguan Water Group Construction Management Co., Ltd., said that in order to ensure the smooth progress of the project, the first phase of the water supply pipe reform project is divided into five construction bids, namely: Jiaolian bid section, Wanjiang East bid section, Wanjiang West bid section, Dongcheng bid section, and Guancheng South City bid section.
The total length of the pipe network of the first phase of the water supply pipe reform project is about 830 kilometers, and the total estimated investment of the project is about 900 million yuan. Up to now, the project has completed the laying of about 476 kilometers of pipelines (about 57% of the total length), with a completed investment of about 230 million yuan.
"The Dongguan water supply pipe network has been built and used for decades, and the early pipes were mainly galvanized pipes and PVC pipes. He Junwen, deputy director of the first project management office of Dongguan Water Group Construction Management Co., Ltd., said that due to the long service life of the previous pipeline, some have been used for more than 20 years, serious aging and corrosion, and the phenomenon of "yellow water" and "water leakage" occurs frequently, which has a great impact on water supply safety and residential water quality.
Ho said the project used three types of pipes: ductile iron pipes for the main pipes, stainless steel pipes and PE pipes for the branches, both of which were designed for 50 years. "If the overall planning of the community is better, the appearance is relatively new, we use stainless steel pipes; if the community planning is not very good, the appearance is relatively old, then use PE pipes, because PE pipes are more flexible, more flexible laying, more suitable for the old community. "After the renovation is completed, the leakage rate of the water supply network will be greatly reduced. ”
Hu Bin, a senior engineer at the Engineering Construction Center of Daojiao Town, Dongguan City, is very familiar with various pipelines. "Ductile iron pipes are less susceptible to corrosion and have better tensile strength than ordinary iron pipes. PE pipes have high strength, high temperature resistance, corrosion resistance and non-toxicity, and are widely used in the field of water supply and drainage, and most of the outdoor water supply pipe networks in residential areas are made of PE pipes within the nominal diameter of 150mm. ”
"Starting from this month, there will be water supply in the community. He Junwen revealed that Wanjiang Shengli Community will be the first community to supply water, and it is expected that in the second quarter of next year, all construction bids will be completed and connected to water, which will effectively improve the water quality of more than 90,000 residents.
Stop 2
Fish have become the "early warning" of water quality in the water plant, and the citizens can drink "safe water"
Entering December, the winter sun is warm and the wind is smooth. Located on the edge of the Dongjiang River, the Sixth Water Plant is located in Aozhitang Community, Dongcheng, Dongguan City, and the Dongjiang River water is flowing day and night, accepting the "experience" brought by various process facilities of the water supply plant. In the end, only the water that passes the inspection can leave the factory and flow to thousands of households. The members of the research group from all walks of life, after experiencing the production process of the water supply plant on the spot, sighed: "I feel very happy to drink assured water in Dongguan!"
On the morning of December 8, the second stop of the research group came to the Sixth Water Plant. This garden-style modern water supply plant, which overlooks a large outdoor swimming pool, is actually the first water supply plant in Dongguan City to use the ozone-bioactivated carbon process for advanced treatment.
"How is this different from a conventional treatment process?" After the members of the research team raised this question, Yu Shiyin, director of the Sixth Water Plant, answered that the Sixth Water Plant has added pre-ozone contact pools and bio-activated carbon filters on the basis of the conventional treatment process, which can effectively remove organic substances in the water through advanced treatment to achieve the purpose of deep purification. To put it simply, the water used by citizens is cleaner and the water quality is better.
Subsequently, the research team came to the edge of the advection sedimentation tank to observe the production process of tap water up close. You can see that the Dongjiang River water flows quietly here, and there are some unfiltered concrete floating at the bottom of the water, and if you look closely, you can also see fish swimming underwater.
"There are fish here!" Soon, the members of the research team were attracted by the novel "landscape" in front of them. Why are there fish in the advection sedimentation tank? In this regard, Yu Shiyin explained that these fish were all taken from the Dongjiang River when they were fetched, and when they first arrived at the water plant, they were still fry, and now some of the fish have grown up.
Yu Shiyin also said that these fish should not be underestimated, they are the "early warning" of the water quality of the water plant, and play the role of biological early warning. "If the fish live well in the water, it means that there is no problem with the water quality. Once we find that there are dead fish in the water, it means that there may be a problem with the water quality, and we must immediately check the water quality. Yu Shiyin explained.
This is just a vivid microcosm of the water production link of the water supply plant to ensure the safety of residents' water. According to reports, Dongguan Water Group Water Supply Co., Ltd. has built a scientific and effective water transmission and distribution management system, and has ensured the water supply safety of transmission and distribution links and users by standardizing pipe network operation standards and processes, improving early warning capabilities, strengthening emergency management, strengthening leakage control, promoting the renewal and transformation of old pipe networks, and building an interconnected water supply pattern.
In 2023, the qualified rate of effluent water quality will reach 100% The construction of dual water sources provides water security
According to reports, at present, there are 33 water supply plants (including 2 water plants under construction) operated and managed by Dongguan Water Group, with a qualified rate of 100% effluent water quality in 2023 and an average daily water supply of 3,908,900 cubic meters from January to November 2023.
"In the event that the Dongjiang water source is polluted, how will the residents' daily water supply be guaranteed?" After visiting the production process of the water supply plant, the members of the research group put forward the issue of water supply security that the general public is very concerned about.
In response, Yu Shiyin said that once the Dongjiang water source is polluted, the Sixth Water Plant will first carry out emergency treatment from the source. At the same time, advanced treatment is carried out through ozone-bioactivated carbon and other processes. "We are confident that we can handle it well, so that all residents of the city can drink qualified and safe water. ”
Not only that, in recent years, Dongguan Water Group has also actively participated in the construction of the Pearl River Delta water resources allocation project, which is one of the 172 major water conservancy projects for water conservation and water supply in the country, aiming to solve the problem of water shortage in Shenzhen, Dongguan, Nansha and other places. At that time, about 330 million cubic meters of high-quality Xijiang water will be provided to Dongguan every year, realizing the dual water source and double guarantee of Xijiang and Dongjiang.
"The two water supply plants we are currently building are taking water from the Xijiang River. Among them, the Songshan Lake Water Plant will be put into trial operation in December this year, and the Luhuakeng Water Plant is also scheduled to be put into trial operation in June next year. After the water is opened, residents in Humen, Chang'an, Marina Bay, Houjie, Dalingshan, Dalang and Songshan Lake will be able to drink high-quality Xijiang water. Yu Shiyin said.
Face
Promote the renewal and transformation of the water supply network:
Let more people know about the hard-won water used in our daily lives
After visiting the construction site of the Wanjiangdong main section and the sixth water plant of the "first phase of the water supply pipe reform project", the research group and the relevant personnel of Dongguan Water Group held a symposium, and everyone expressed their thoughts and views on the research and visit.
Talk about engineering construction
From incomprehension to "good communication"
At the forum, Wang Qingyu, a member of the Dongguan CPPCC and an observer of Nandu's livelihood, said that in recent years, Dongguan has been digging roads every year, and the people have also complained.
"Today's visit to the site found that this project has done a lot of work in terms of pipe network laying, production safety, citizen travel, etc., and has achieved excellence, and the feeling is quite deep. Wang Qingyu said that these projects that are closely related to the people can be strengthened in the future to let more people understand the actual situation. "Let them know that the fence is built for a reason. ”
"It was a very rewarding day. Wei Hongzheng, an associate professor at the School of Law and Social Work at Dongguan University of Technology, said that as an ordinary citizen, when he saw digging roads before, the most intuitive feeling was that he was surrounded everywhere, and he didn't understand it very well. "Through this visit, we learned that through the renewal of the pipe network, we can ensure that the water is cleaner in the process of transportation, and the water quality and water pressure are more guaranteed. "Communication was necessary, it was a good communication. ”
"Every process of this project is very standardized, and the use of pipes is also very reasonable. Hu Bin, senior engineer of the construction center of Daojiao Town, Dongguan City, said that in recent years, the Dongguan water control project has been in full swing. "When many projects are carried out, the people do not understand very well. But when the project is completed, the people will thank the government when they see the tangible results and really benefit. ”
Talk about water security
After learning about the work of the water supply plant on the spot, I feel more at ease about the daily use of water
"The deep investigation of Nandu into the sixth water plant shows that everyone attaches great importance to water supply safety, and this trip is also conducive to promoting the high-quality economic and social development of Dongguan. Tang Chaorong, a representative of the Dongguan Municipal People's Congress and an observer of Nandu people's livelihood governance, said at the symposium that after learning about the management system of the water supply plant and the water transmission and distribution links on the spot, he had a deeper understanding of daily water use and felt more at ease.
Wang Qingyu, a member of the Dongguan CPPCC and an observer of Nandu's people's livelihood governance, praised the work of Dongguan Water Affairs Group, and suggested that publicity should be strengthened to convey good voices to the general public. "Let more people understand the hard-won water in our daily lives, so as to better support the work of water utilities." ”
Wei Hongzheng, an associate professor at the School of Law and Social Work at Dongguan University of Technology, couldn't help but sigh after this in-depth investigation and a close understanding of the production process of the water plant, "Water work is really valuable and meaningful." Wei Hongzheng also said that he has been studying public relations all year round, and some citizens still have doubts about the formulation of water bills. He suggested that Dongguan Water Group could speak out more through the media, so that the public could better understand the water work and give more cooperation and support.
"After seeing the water purification process at the water plant, I am even more convinced that we are drinking safe and good water every day. Hu Bin, a senior engineer at the Engineering Construction Center of Daojiao Town, Dongguan City, said that he only knew that the water quality of the Dongjiang River was getting better and better, but he had never so intuitively understood how the domestic water he drank and used every day came from. "After reading it today, I feel very relieved, and I will promote it to the people around me more in the future. ”
Talk about water supply construction
Since 2018, more than 1,574 kilometers of water supply pipe networks have been renovated
"Thank you for your interest and support in our water work. Mao Lei, member of the Party Committee and deputy general manager of Dongguan Water Group Co., Ltd., said that the first phase of the water supply pipe reform project is an important part of deepening the city's "water supply network" series of high-quality water projects.
Mao Lei said that in recent years, in order to allow residents to drink "high-quality water" and "rest assured water", Dongguan Water Group has been promoting the renewal and transformation of the water supply network. Since 2018, a total of about 750 million yuan has been invested to renovate more than 1,574 kilometers of pipe network. "The continuous improvement of the water supply network can effectively ensure the safety of Dongguan's water supply, further improve the intelligent and intensive management of water supply, and play a great role in promoting the development of economic construction and meeting the people's production and living water needs. ”
Based on the new starting point of Dongguan's "Double Thousand", Dongguan Water Group will continue to improve the water quality of Dongguan by accelerating the transformation of the water supply pipe network, strengthening the operation and management of water supply plants, strengthening water quality testing, etc., so as to ensure the safety of water supply, let "high-quality water" flow into thousands of households, and continuously improve the sense of security, gain and happiness of citizens in water, so as to escort the safe and high-quality water supply of tens of millions of residents in Dongguan.
Co-ordinator: Nandu reporter Tian Lingling
Written by: Nandu reporter Tian Lingling and Huang Huiping
Photo: Nandu reporter Liu Mei and Xi student Jin Yang