On October 27, Guangdong Province's rural domestic sewage treatment and toilet revolution, centralized water supply site will be held in Guangzhou Zengcheng, the reporter learned from the meeting, at the end of this year, the province to complete 1,000 natural villages of domestic sewage treatment tasks, has been completed 866. At the same time, the three-year action task of improving rural toilets has been completed as required, and progress has been made in rural centralized water supply.
By 2025, the province's rural domestic sewage treatment rate will reach more than 60%.
At present, Guangdong is making every effort to promote rural revitalization, and rural domestic sewage, toilet revolution, and centralized water supply are key tasks, and rural domestic sewage treatment is one of the difficulties.
Recently, Guangdong issued the "Guiding Opinions on Deepening the Action of Rural Domestic Sewage Treatment in Our Province", which clarifies that by the end of 2021, 1,000 new natural villages will be added to complete the treatment of rural domestic sewage; by 2025, the Pearl River Delta region will basically complete the treatment of rural domestic sewage, and the rural domestic sewage treatment rate in the province will reach more than 60%.
According to the meeting, in 2020, the rural domestic sewage treatment rate in Guangdong has increased from less than 20% in 2018 to more than 40%, and the new facilities in the past two years account for nearly 70% of the existing facilities, which is more effective in alleviating the problem of rural water pollution.
Routine maintenance
In addition, as of the middle of October this year, the 866 natural villages included in the reserve pool for people's livelihood in the province have been completed, and the completion rate is 86.6% compared with the task target.
"In the future, we must not only increase our investment, but also use 'embroidery kung fu' to promote the work." The relevant person in charge of the Provincial Department of Ecology and Environment said that rural areas have the characteristics of dispersion and diversity, and need to be solved in the most appropriate technical way for specific rural situations. In the future, it will also cooperate with the relevant departments of the province to carry out supervision, research and evaluation of the actual handling of people's livelihood, and rely on the provincial technical team to carry out rural domestic sewage treatment training.
Resource utilization after sewage treatment
At the meeting, the progress of the toilet revolution in Guangdong was also reported. By the end of September, there were more than 12.72 million sanitary household toilets in rural areas of the province, with a penetration rate of more than 95%, 71,023 standardized public toilets, etc., 7,479 newly rebuilt rural tourist toilets, 1,700 primary and secondary school toilets, and completed the three-year action task of rural toilet improvement as required. At the same time, it was proposed at the meeting that rural public toilets should be built according to needs, and villages with fewer outsiders and no guarantee of management and protection funds should not build new public toilets.
In terms of centralized water supply in rural areas in the province, since the implementation of the offensive action at the end of May, the province has started construction of 4266 water supply projects, with an operating rate of 80.6%, and the new population has been covered by 3.207 million people.
The four models of Zengcheng are adapted to local conditions to treat rural domestic sewage
The reporter also visited many villages in Zengcheng. "In the past, when I used mountain spring water, I was definitely worried that the water quality was not good, but now I am connected to tap water, and the amount of water is stable and safe." In Deng Shan Village, Xiaolou Town, Zengcheng, villager Liang Dingmei unscrewed the faucet to introduce. At the same time, the equipped rain and sewage diversion pipe allows domestic sewage to accurately enter the sewage pipe. The sewage from their toilets is treated by septic tanks and then discharged into sewage pipes.
In fact, walking in the village of Deng Shan Village, the front and back of the house are clean and tidy, which is due to the implementation of the rural human settlement environment improvement action, of which rural domestic sewage treatment is the key.
Compared with cities, rural areas are more dispersed and different, and more emphasis needs to be placed on adapting to local conditions. Zengcheng has explored four rural sewage treatment models of "connecting municipal pipe networks, centralized facilities, decentralized facilities, and resource utilization", and implemented differentiated and targeted treatment.
Paitan Town Deng Cun Village Laneway
For natural villages close to the municipal pipe network, Zengcheng adopts the method of connecting the urban sewage treatment system for treatment. In the Paitan town sewage treatment plant, within the scope of service, there are about 5100 people in 4 rural areas generating sewage into here, "these villages are closer to the sewage treatment plant, it is relatively convenient to do rain and sewage diversion connection pipe network, currently about 700 tons of sewage from the village every day, accounting for one-fifth of the total treatment." The person in charge of the sewage treatment plant introduced.
For more scattered and remote villages, a variety of methods are used to decentralize treatment in situ. In the stone house community of Dengcun Village in Paitan Town, an integrated sewage treatment facility has been built, and the sewage is discharged to the agricultural irrigation canal after the equipment treatment reaches the secondary standard.
In Shagang Village, the sewage from scattered farms has become irrigation water. In the courtyard where farmers live, three-compartment septic tanks, grease traps, and gray water treatment ponds are built, and after the sewage is harmlessly treated, it enters the farmers' small vegetable garden for consumption and realizes resource reuse.
Sewage treatment facilities
In addition, the continuous operation and maintenance of various sewage treatment facilities is also particularly important. Zengcheng explored the construction of a "four-dimensional" management model, including comprehensive compaction of district-level "supervision + assessment + technical guidance" responsibilities, town streets "coordination + management + implementation" responsibilities, etc. On this basis, the operation and maintenance management model of "district drainage company + farmers" is constructed, and local villagers are hired to maintain the management to improve the participation and enthusiasm of villagers.
Village domestic sewage treatment is a complex system engineering, strong professional and technical, and more professional forces are needed in the governance of various cities. At the promotion meeting, an equipment technology exhibition was also held, and a number of enterprises demonstrated water ecological restoration technology, prefabricated sewage treatment plant, intelligent monitoring system, etc. on the spot.
"Rural sewage treatment should first start from the perspective of operation and maintenance, and ensure that long-term operation and maintenance can be used to do facilities." Zeng Jianning, chairman of Guangzhou Resources environmental protection technology co., LTD., said that in the specific implementation, it is recommended to unify the design and planning of the county or town, and find enterprises with experience in research and development, implementation and operation and maintenance, and at the same time mobilize villagers to participate in the implementation. In practical work, the ability of grass-roots cadres to perform their duties is particularly critical, "At present, the South China River and Lake Chief Training Center has designed 10 special courses for grass-roots cadres for rural sewage treatment, and sent them to hundreds of counties and thousands of towns free of charge." ”
[Reporter] Zhang Zijun
【Author】 Zhang Zijun
【Source】 Southern Press Media Group South + client
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