Cold when hot, cold and less heat, is China's desalination desalination of the real situation. Insiders said with emotion, "Everyone knows that it is important to develop seawater desalination, but the reality is that there are so many people who ask fewer people to do so. There are few cities that really use desalination to solve the problem of water shortage." Based on this, the proposal submitted by Jiusan Society on "Suggestions on Further Promoting the Development of Desalination Industry" was raised by the industry during the two sessions this year.
Seawater desalination and promote high boom cycle Jiusan Society advice to strengthen their own technology
National Development and Reform Commission website on the 4th news that the National Desalination Industry Alliance - Bohai Sea Industry Alliance and the South East Sea Industry Alliance was officially established on March 3.
At the two sessions this year, a proposal submitted by the Jiu San Society entitled Proposal to Further Promote the Development of Desalination Industry shows that there is still a gap between our country's desalination and that of other countries. In terms of cost, the domestic level of seawater desalination All costs 5 to 8 yuan, significantly higher than the overseas advanced project costs 3 to 4 yuan.
The proposal put forward that the management mechanism should be streamlined to clarify the investment, construction, operation and management agencies and mechanisms for desalination projects at the national level, increase policy support, formulate specific plans and rules for government subsidies, and clarify the tonnage of different desalination technologies Water subsidy program to strengthen scientific research.
With the publication of the "Thirteenth Five-year Plan for National Seawater Utilization" by the end of 2016, the desalination of seawater instantly took the upper hand and attracted much attention from the market.
According to the plan, to achieve the large-scale utilization of seawater by 2020, the total scale of seawater desalination will reach 2.2 million tons / day or above. Coastal cities to add desalination scale of 1.05 million tons / day, the island area of ​​desalination more than 140,000 tons / day.
However, there are still some problems to be solved in the development of the seawater desalination industry.
Desalination detonated the market expected
Water scarcity is becoming a reality that many places in China must face squarely.
The data show that China's water resources show the characteristics of northern resource-based water scarcity, water quality deficits in the South, over-exploitation of groundwater, and serious sea-water intrusion. Only 1/4 of the world's average per capita average water consumption per capita is below the level of severe Water shortages, some northern areas even below the minimum, rely on local water has been difficult to maintain ecological needs. According to the "National Comprehensive Water Resources Planning" of the Ministry of Water Resources, by 2030, taking into account the factors of South-to-North Water Diversion, annual water deficit in the coastal areas will still reach 21.4 billion cubic meters due to the water diversion across the river basins can not solve the fundamental problem of water shortage.
According to UNESCO's water resources standards, by 2030, half the world's population will live in a water-scarce environment. Increasing the supply of freshwater through seawater desalination has gradually become the consensus and common practice throughout the world.
According to the "Thirteenth Five-Year Plan" proposed by the total desalination of the country reached 2.2 million tons / day target, the national scale of desalination by the end of 2015 the total scale of more than 100 million tons / day doubled. Comparison of the target data and the status quo, an instant to the sea water desalination market a boost.
According to the plan, during the "Thirteenth Five-Year Plan" period, cities with a lack of water will be supported in a concentration of 2 to 5 demonstration cities for seawater utilization. Pilot projects on technology policies will also be conducted to explore modes and investments in desalination of seawater into urban municipal water supply networks, Operation and management mechanism to build a seawater desalination plant that is compatible with the minimum living water for the city.
And more urgent than the planning goal, or the thirst for water in industrial provinces and cities. The data show that the targets of desalination planning in major industrial provinces (cities) such as Tianjin, Hebei and Zhejiang have been aggregated to exceed 2.2 million tons / day of the "13th Five-Year Plan".
The two superposition, reminders up the market for desalination prospect of high expectations.
The key technology is subject to other countries
However, despite being sought after by the market, desalination still has many problems to be solved in our country.
Jiu San Society's proposal pointed out that the scale of desalination in China is only 1.2% of the world, in the domestic use of desalinated water, industrial water accounted for 63.60%, and the current domestic desalination of high cost of water, desalination water power consumption, From the cost structure point of view, energy costs accounted for four to five percent of the cost of tons of water. Domestic average cost of desalination tons of water 5 to 8 yuan, significantly higher than the overseas advanced project costs 3 to 4 yuan.
The most critical technical part also has a gap with developed countries, the key core technology of energy recovery device is the United States, Japan, Switzerland and other countries to master.
Proposal proposals to build a maritime power as an opportunity to build a scientific policy framework for seawater desalination to provide market space for development. At the national level, the agencies, institutions and mechanisms for the investment, construction, operation and management of desalination projects should be clarified to avoid wrangling and long-term management in various departments, to increase policy support, to introduce incentive policies, to promote the promotion of autonomous technologies and to improve their own technologies Maturity, the formulation of specific programs and rules of government subsidies, clear different regions, different desalination technology tons of water subsidy program; in taxation, financing, land use and other aspects of the development of relevant preferential policies.
In terms of investment in science and technology, Jiusan Society proposes to strengthen the basic research on seawater desalination materials and establish a database of desalination materials and mechanical corrosion. In order to speed up the popularization and application of new materials, optimize the standard technical system of desalination equipment selection and upgrade our own equipment The technical level and international competitiveness laid the foundation. The establishment of marine engineering materials research and development, application of special, and promote the combination of equipment and materials development to meet the different needs of owners, enhance the market competitiveness of domestic equipment. (Reporter Zhang Wen)
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