The hottest automation technology improves the pro

2022-09-19
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Automation technology improves the production capacity and quality of drinking water editor's note: thousands of people's drinking water comes from polluted water sources, and there is no qualified wastewater treatment equipment for treatment; This is an important task to be solved for water economy. Innovative electronic technology can greatly help users in the drive of efficient water treatment equipment. In addition to efficient and economical energy utilization, automation technology is also an important lever to improve the production capacity and quality of drinking water

nowadays, about one-fifth of the earth's population has no clean water source, so wastewater treatment equipment is often their water source

the reason why the earth is called "blue planet" is that 70% of the earth's surface is covered by water. Nevertheless, there is a serious water shortage problem on the earth: 97% of the earth's water is salty water, which is not suitable for people to use directly, and only the remaining 3% of the water is potable fresh water. Two thirds of this 3% fresh water is preserved in the earth's south and north poles, as well as the earth's permanent glaciers. In the end, less than 1% of the water is fresh water that can be directly drunk by human beings

the above description uses percentage to represent relative data; In absolute figures, the total amount of water resources on earth is 1.38 billion m3, of which 36 million m3 is fresh water, while only 3.6 million m3 is fresh water available for human direct use. Pure mathematical calculation can draw a conclusion: even a small proportion of fresh water is enough for people on earth, and it is six times the standard of per capita water use in today's industrialized countries. Unfortunately, the distribution of these fresh water resources on the earth is very uneven, and the pollution degree of fresh water resources around the world is not exactly the same. Without exception, cargo ships are all made of steel, and the key problems to be solved by using fresh water are also different around the world. One in five people on earth cannot get clean fresh water. The source of drinking water for more than 1.3 billion people is polluted, and 2.4 billion people have no controllable wastewater treatment facilities

according to the calculation of the United Nations, in 2025, two thirds of the world's people will live in an environment of water shortage or insufficient water. The United Nations explained that the period from 2005 to 2015 was 10 years of the international "water for life" project. The important goal of the United Nations in this decade is to halve the number of people in the world who lack clean drinking water in the face of the growing global population

if the goals of the United Nations are achieved, 180000 people will work next to drinking water treatment equipment and 330000 people will work next to wastewater purification equipment every day. This means that the water sector needs to be prepared to provide sufficient water volume, ensure the reliability of water quality, and establish and maintain corresponding infrastructure

the new scheme has great differences

this goal of the United Nations cannot be achieved by using the current wastewater treatment technology and disinfection technology in industrial countries that do not lack water. Different available water resource conditions, different climatic and social conditions, and different infrastructure conditions for further expanding its product series must be adapted to the local reality. The first is the sustainable development of water resource management, water resource recycling technology, disinfection and desalination schemes. Secondly, no matter what kind of water treatment technology is adopted, it is of great significance to save energy. Since waste water treatment equipment will consume a lot of energy, and the generation of CO2 will also bring about the problem of climate warming, economy and environmental protection are very important. The annual electricity consumption of sewage treatment equipment in Germany is about 4400gwh/A

in addition, due to the rapid population growth and changes in emerging industrial countries and developing countries, as well as the accelerated urbanization process, users also put forward requirements for additional investment in sewage treatment. By 2030, 60% of the world's population will live in super cities with an area of 10%. This brings the following questions: can the wastewater treatment system in industrial countries undertake such heavy sewage treatment and water supply work. In other words, whether the decentralized control management and semi centralized control management of water treatment, wastewater treatment and energy supply can be organically combined

globally, the investment in the manufacturing and analysis of sustainable development infrastructure in the next few years will be as high as 290billion euros, while the results obtained through other statistical channels will be as high as 80billion euros. In order to solve the global water shortage problem, the form and structure of water resources management organization can not be ignored. In Europe, the European Union and gat are trying to promote the discussion on the wide application of water treatment and circulating water supply. Although it has encountered many obstacles in the public discussion, it is indisputable that enterprises in the German water economy show a centralized trend

the role of electronic technology in the sustainable development of water economy is often underestimated. Automation technology, drive technology and energy technology in the water economy have great energy-saving potential, because the equipment in the water economy usually works for life after production, and its service life is generally more than 40 years. Although enterprises have optimized the production process of these equipment, water supply enterprises have always regarded the stability and reliability of water supply as their primary task in the use and operation of these equipment. Efficient equipment driving technology can not only reduce the equipment operation cost of water treatment enterprises, but also reduce CO2 emissions. In the continuous operation of water treatment enterprises, the investment of enterprises in efficient driving technology can be recovered in a short time. When enterprises choose efficient and energy-saving driving technology, they should note that the total cost of equipment in the whole service life cycle is of decisive significance

almost all the second set of water treatment equipment are over specification equipment: in most cases, the operating conditions of the equipment are not complete at the beginning of the project, so first of all, a driving system with large power should be determined to ensure the safe and reliable operation of the equipment; Secondly, it is used and operated according to a certain working position, which is significantly different from the best working position. On the other hand, the optimized flow regulation also has great saving potential: under normal circumstances, process pumps and compressors use throttle plates or bypass valves to control the flow according to the mechanical flow control mode. The change of load needs to be adjusted by the movement of equipment characteristic curve, and this adjustment has little change on the power required by the motor. The unused flow is wasted as a power loss, which not only makes the equipment expensive to operate, but also produces other harmful side effects, such as unwanted medium heating

energy saving technology has been rapidly promoted

the variable speed drive system has frequency conversion function, which changes the working characteristic curve of the pump rather than the working characteristic curve of the whole set of equipment. This method can save 30% - 50% energy. In addition, the frequency converter regulation technology also provides convenience in improving the mechanical performance of the system: it can avoid the current peak and strong torque impact when the motor starts; Similarly, this technology can also protect the pipeline system from pressure impact, cavitation or vibration, and avoid subsequent damage to the equipment

another energy-saving method is to adopt the high-efficiency energy-saving motor of European Union EEF1 level or American EPACT level. Eff1 class high-efficiency energy-saving motor can recover its investment within 1 year when it works for 2000h a year

if the existing equipment cannot be reconstructed constructively, energy conservation can only be achieved through more intelligent equipment operation. At this time, the best way is to use automatic control technology to use the required functions, and use SPS programmable controller to automatically control the functions required by the equipment. By 2030, the system will adopt a special algorithm language to realize the mathematical optimization of the control process, and integrate this algorithm language into the process control system. The calculation results can be easily transmitted to the next level of automation as instructions to achieve complete process automation control. The pipeline network control introduced in this paper is an example

while optimizing the system, enterprises in the field of water economy also simulated and analyzed the production process of enterprises. Dynamic simulation technology enables the equipment to simulate the working conditions of the equipment changing with time without actually starting the equipment and without damaging the product quality. After large enterprises adopt simulation technology as an auxiliary design of engineering projects, the next step is to simulate the production run-time to support the use and operation of equipment. The core of the auxiliary system actually used in the real production equipment is the simulation calculation of the equipment state at the same time with the production engineering, which can reproduce the operation status of the equipment in real time, so as to lay the foundation for the optimization of the equipment process in the future

in addition to the basic modules that are well known today, powerful module components can be used by users in all process stages; Now, the first step that has been achieved is the application in the field of sewage purification: the pipeline network, sewage purification equipment and clean water transmission system are all incorporated into a module for modeling, so as to simulate their common effects

combined modules integrate different technologies

as the degree of process automation is increasingly affected by the power performance of water supply equipment, we can also see them in the simulation software. The combined control module is the automatic function control module that combines the continuous production process with the phased working party at 2 a.m., which is integrated into a whole system; This enables the process control technology and automation technology to reproduce the actual working conditions of the equipment in a timely manner in the visual design stage, avoiding the lack of equipment performance reserves

in order to meet the needs of the market, automation technology has increasingly adopted standardization. In the past, attention has been paid to the standardization of the so-called "hardware" unification, but now the development trend is: the standardization of future systems, application software, and interfaces. In order to avoid the conflict between standardization and professional special systems, automation technology supplier enterprises provide free automation modules suitable for all water supply enterprises. In the future, Ethernet communication technology protocol can become the standard communication technology protocol for most equipment components. Based on people's understanding of standardization, users will build an unimpeded control platform in both vertical and horizontal directions to configure components developed and produced by different manufacturers

high performance enterprise asset management system

in order to improve efficiency, avoid failure and equipment shutdown, equipment needs process control system to provide more and more information. The PAM enterprise asset management system installed in the production equipment was originally mainly used to collect the data required for the maintenance of data automation components when the fieldbus instruments and equipment were in working state. When the components and parts of different process technologies, such as pipeline system, mechanical equipment and instruments, adopt PAM management scheme, analyze the performance of the system, and are positively affected and affected, the economy of water supply enterprises will be greatly improved

in the coming period of time, the market demand for PAM enterprise asset management software will increase significantly. So far, no

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