All rivers are rivers, sewage needs treatment, at present the construction of urban sewage treatment facilities has been quite complete, rural sewage treatment is still in its infancy, effective control of rural sewage is currently one of the important problems facing rural social and economic coordination. During the "Thirteenth Five-Year Plan" period, there are trillion markets for rural sewage treatment. The promotion and application of new technological innovations and new technological products are undoubtedly the most important driving force for leveraging the trillion market. However, many technical difficulties, such as mismatch of economic input, Ubiquitous, resulting in tremendous pressure on the rural sewage treatment market, Peking University Environmental Science and Engineering National Mother Professor Guo Shu combing existing problems, and for the future development of rural water treatment technology pointed out a new direction.
To seek technology and economic coupling synergy
The mismatch between technical effects and supporting economic inputs is a major challenge in the rural sewage treatment market. Ji Guodong believes there are often two extremes in the market, over-reliance on low-cost technologies or excessive focus on forward-looking technologies. This will lead to two situations. First, the threshold for market access is too low, leading to the influx of a large number of low-tech products and small enterprises without core intellectual property into the rural sewage treatment market. Second, the threshold for market access is too high. Investment and financing such as PPP Driven by the model, a lot of forward-looking technologies with high economic input are introduced into the rural sewage treatment market. Both of these cases will lead to a mixed result in the rural sewage treatment market. The low technical content can not solve the problem of the effect, and the high cost can not afford the rural economic conditions, which are not in line with the actual needs of our rural sewage treatment market. What is really needed in the rural sewage treatment market is the technology with good synergistic effect of technology and economy. The technology is low, the implementation effect is poor, and the economic investment and the forward-looking technology are not in line with China's rural sewage treatment market, such as solar energy, membrane filtration And ordinary activated sludge method, these technologies have their own technical and economic advantages, but may not be suitable for our rural sewage treatment market status quo needs. In addition, the country east also said that rural sewage is relatively scattered, difficult to collect and control, and urgently need to explore a new way of coupling rural sewage treatment technology and economic input. "Any technology has its own advantages and disadvantages, to stand the test of time, can really maintain the operation of more than 10 years, the cost-effective technology products worth the focus attention, vigorously promote.Therefore," for the rural sewage treatment technology market 'Tailored' is very important, to find a balance between technical level and economic input, "nationality told reporters on China Water Network.
A diversified management system is very important
Ji Dong believes that not only the diversification of rural sewage treatment technology, suitable management system also need to explore. At present, there is the problem of small scale, difficult management and high cost of rural wastewater treatment in our country. The technology flow and capital flow have two levels of differentiation and the market-oriented competition pattern has not been formed yet, which leads to the unsatisfactory market prospect. Only if there are three or more enterprises in a county with suitable technology and high management level participate in the market competition, will the enterprise be motivated to continuously improve and improve the technical and management level, and promote the rural sewage treatment technology market to move towards the standardization. Improve the effectiveness of rural sewage treatment.
In addition, the rural sewage treatment facilities that have been built in some areas of our country appear idle and not operating. At the technical and economic level, internal factors are also issues of technical products and economic costs. In addition, the government only invests in capital construction, does not bear the operation and maintenance costs, decentralized operating costs and benefits do not match, the lack of large-scale and specialized operation and management, but also lead to rural sewage treatment facilities "sun" one of the important reasons, the future rural Sewage treatment market scale, professional management is very important.
Rural sewage treatment technology to study details
Professor Gu Guodong came into contact with rural sewage treatment in 2006, when the problem of rural wastewater treatment was considered under the background of rural water source protection and pollution control. Ji Guodong told China Water Network reporter: "Rural sewage treatment is derived from the protection of rural water sources. Most of our northern rural residents raise water through wells, and rural domestic sewage is actually a recycling process. If it is not handled properly, it will pollute the underground Therefore, we proposed to realize the integration of water supply and drainage in rural areas at that time.Currently, the integrated management of water supply and drainage in rural areas may be even more Conducive to rural sewage treatment technology and efficient operation of facilities. "
Ji Guodong pointed out that at this stage, the rural sewage treatment market is still the big and small enterprises in the technical area of cake, but the technical innovation is relatively slow, innovative technology is rare, most are just the name of the "renovation" and go deep into the details The core technology product competition to replace the competition in the capital market will become an important trend in the future rural sewage treatment market. For example, the bio-ecological technology based on molecular signal regulation will be the mainstream of future technological innovation. Ji Guodong professor team based on the functional gene group coupled regulation of molecular information technology research and development of multi-media bio-ecological technology, micro-power energy, the overall operating costs of 0.08-0.28 yuan / ton, made more than 20 national patents, Projects and other support has been promoted more than 2,000 sets of applications. "This technology product is updated every year, and it has also been extensively promoted in the Yangtze River Delta, Pearl River Delta and Northeast China for many years. More than 40 demonstration facilities in Zhangjiagang City, Jiangsu Province are responsible for the overall contracting operation. By the end of this year, Has been maintaining good results, "said Ji Guodong.
In view of the future development direction of rural sewage treatment technologies mentioned by China's water network journalists, Ji Guodong believes that the technology developed must go deep into details.
First, attention should be paid to the suitability of technology, including regional suitability, climate suitability and borderline suitability. The same technique can make a big difference between the effect of mountains and plains; the impact of different climates on the technology is also extremely important; the technology in the South may not be applicable in the North; any technology has boundaries and is not a panacea. The boundary conditions It is also a key element in evaluating technical suitability.
Second, attention should be paid to the safety of technology. Whether it is domestic sewage treatment or reuse in rural areas, many existing sewage treatment and reuse facilities in rural areas lack of supporting anti-seepage measures, resulting in the discharge of tail water into farmland or ditches to pollute the groundwater.
Third, we must pay attention to the promotion of technology. Ji Guodong put forward the unbalanced development of the eastern and western regions of our country, there is a big gap between the technical strength and the management level, and pure technical transfer is not feasible. "There is a serious problem of nitrogen in Jiangsu, Zhejiang and Shanghai water bodies. Pollution of surface water and groundwater must be governed in depth. Therefore, there is a high demand for technology, rapid technological innovation, large investment in technical equipment and operation funds. However, the backward western China is also far behind with corresponding facilities and inputs Less than the east, especially the latter part of the operation and maintenance lack of financial security, easily become a 'sun' project.In addition, many facilities need to achieve a variety of functions, technical requirements are relatively high, to ensure the durability of technology, but also supporting the maintenance and management , This technology is only suitable for promotion in the eastern and western areas; also, some urban sewage treatment technologies are more difficult to promote in the rural areas. "
According to the current situation of the rural sewage treatment technology market, according to statistics, only 8% of rural sewage is governed by the principle of "non-equilibrium market, unbalanced technology, large regional differences, technology driven by capital market and not prominent core technologies. In the next 5-10 years, there will be a large cake market in the rural sewage treatment market. Together with the pipe network system, there will be about 20,000 million market scales in 10 years.
(Above based on the contents of the interview)
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