During the "Twelfth Five-Year Plan" period, with the upgrading of the sewage treatment plant, the continuous improvement of the scale of water treatment and water supply, and the improvement of the proportion of sludge treatment and reclaimed water reuse, the water treatment industry will usher in a lot of development opportunities. Generally, it can be reflected in the following four aspects: first, there are a large number of sewage treatment projects that have been built and are under construction. The country has more strict requirements on the effluent quality of sewage treatment plants, which has been raised from Level B to Level A, and many existing sewage treatment plants need to be upgraded.
Secondly, the annual sewage treatment capacity of the "Twelfth Five-Year Plan" will reach 50 billion cubic meters. Provincial capitals and prefecture-level cities are still the focus of construction. During the "Twelfth Five-Year Plan" period, there are 379 cities with construction needs. The treatment scale of new facilities will be mainly small and medium-sized, but will continue to increase.
Third, with the continuous increase of urban population, China's water purification plants also have the demand for new construction and expansion. At the same time, the "12th Five-Year Plan" has also improved the quoted standards, from 35 to 106.
Finally, according to the requirements of national energy conservation and emission reduction and the development of low-carbon economy, urban sewage treatment will focus on pollutant emission reduction, and sludge treatment and sewage recycling will become a new hot spot in the development of the industry. China's water treatment market δ It will be in a "golden growth period" for a long time. At the same time, the localization of water treatment automation system will also become an inevitable trend of industry development.
Automation products are widely used in the water treatment market, δ New projects and renovation projects will drive the market growth of a series of automation products such as PLC, frequency converter, various instruments, SCADA, etc. With the continuous improvement of automation level in the water treatment industry, the demand for automation monitoring software in the industry has increased; At the same time, with the increase of urban projects, the system requirements of the project are relatively low, and the cost of such small and medium-sized projects is limited δ In the projects coming to cities and towns, the application of small and medium-sized PLC will increase, and the application of local brand frequency converter will increase.
Development status of sewage treatment equipment
The production of domestic sewage treatment equipment began in the middle and late 1970s, when the level of standardization, complete set and serialization of products was very low, and there were few finalized products. Since the 1990s, the relevant national departments have successively carried out technical transformation on the major sewage treatment equipment manufacturing enterprises, improving the manufacturing capacity and level, and the production level of special urban sewage treatment equipment and its supporting general equipment has been greatly improved.
At present, all or main equipment of urban sewage treatment plants with daily treatment capacity of 5, 10, 25 and 50 tons can be localized. Among them, the domestic microporous aerators, high-strength aerators, belt filter presses, various types of screen cleaners, mud scrapers, sand scrapers, aeration rotary brushes, aeration blowers, large sewage pumps, submersible electric pumps, etc. have basically been able to meet the domestic market demand, and some products have been exported.
In terms of product design, domestic equipment such as sewage sludge lifting system, mechanical filtration and sedimentation system, aeration treatment system and sludge dewatering treatment system with a daily treatment capacity of 50000 tons to 500000 tons has reached the international level of the 1980s and can provide complete sets of equipment. However, in terms of biogas power generation system and online monitoring system, there is still a big gap between domestic equipment and foreign developed countries. There are still gaps to be filled in some of the latest international technical equipment fields in the 1990s.
In terms of product level, the efficiency of single equipment of blower, water pump and other products with large energy consumption has approached the international level in the 1980s. The overall level of complete sets of products is equivalent to the international level in the 1970s and 1980s.
At present, sewage treatment equipment in developed countries has reached a high level of modernization, with the following characteristics: first, urban sewage and industrial wastewater treatment equipment has been standardized, standardized, serialized and packaged, and has formed a complete range of water treatment equipment industry with high degree of commercialization. Second, water treatment unit equipment, such as sedimentation, filtration, extraction, adsorption, microfiltration, electrodialysis, etc., has formed a professional scale production, with relatively stable varieties, specifications and quality, reliable performance parameters, and very convenient user selection.
Third, the complete set of urban sewage equipment is developing towards large-scale, and the industrial wastewater treatment equipment tends to be specialized and complete with the maturity of the process. Fourth, the fan, water pump, valve and other general equipment matching with water treatment have gradually realized specialized design and organized production to meet special needs. Fifthly, the shortage of water resources, the eutrophication of water bodies and the safety of drinking water have led to the development of advanced wastewater treatment equipment and disinfection equipment to a considerable extent. Sixthly, anaerobic treatment technology has attracted renewed attention and promoted the application of anaerobic treatment equipment in the treatment of high concentration organic wastewater.
Domestic sewage treatment technology lags behind
At present, there is a big gap between domestic sewage treatment equipment and developed countries.
The main problems are as follows: First, the production and demand are prominent, and the comprehensive production capacity of sewage treatment equipment in China is far from meeting domestic demand. Second, the variety structure is backward, the variety is few, and the development ability is weak. Among many products, general mechanical products and primary products account for a large proportion, and the integration of machinery, electricity and instrument with modern level is less or in the initial stage. Except for large environmental protection backbone enterprises, most enterprises lack the self-development ability of new products. Third, the product quality is poor and the technical level is low. 35%~40% of the products are equivalent to the international level in the 1960s and 1970s. Among the current domestic sewage treatment equipment, about 1/5 are products that are limited in production or eliminated within a time limit, and about 2/5 are products that need to be improved. Fourth, foreign exchange earnings from products are unstable. Although domestic sewage treatment equipment has been exported, in general, the technical content of export equipment is not high, the category, variety and area of export are narrow, and the competitiveness in the international market is not strong. Fifth, the comprehensive benefits of relevant enterprises are generally low. Except for a few enterprises, most sewage treatment equipment manufacturing enterprises have poor economic benefits. Sixth, the ability of complete equipment and project contracting is weak. Few enterprises can undertake the contracting of sewage treatment projects and complete sets of equipment. Most enterprises focus on the development and manufacturing of finished products that they are relatively suitable for, and are engaged in stand-alone production and sales, which makes the domestic sewage treatment complete sets of capacity and the general contracting capacity weak. Seventh, operation training and after-sales service need to be strengthened.
The water and sewage treatment industry in developed regions is using SCADA as the core technology to support new business processes, in order to respond to the dynamic changes in the industry and the need for large-scale upgrading of existing infrastructure. The use of emerging SCADA technology can minimize the capital expenditure required when improving the sustainability of aging infrastructure and upgrading aging infrastructure. In developing areas, new water and sewage treatment and distribution systems are being updated or installed. SCADA is used to put these in different geographical areas λ Connect the devices of the. As the water and sewage treatment industry turns to improve its business process to meet the rising demand under the uncertain economic environment, and to cope with the economic challenges brought by privatization and public-private partnerships in the industry, SCADA will become the core of technology application. The supplier must develop a SCADA system that can be fully integrated with the company's business system. These systems include technologies such as geographic information system (GIS) and asset management project. If the supplier wants to build excellent competitiveness, it must fully demonstrate the real-time data that its SCADA system can achieve, so as to meet the needs of all stakeholders involved in the operation of sewage treatment plants δ The need to come.
