With the continuous development of urbanization and the increasing demand for clean water, water purification plants have become an indispensable part of urban infrastructure. The stable operation of water purification equipment is crucial to ensuring the supply of safe and qualified tap water to residents and enterprises. However, the operation of water purification plants involves a large number of electrical equipment, such as water pumps, filters, disinfection systems and monitoring devices, which have high requirements for power supply stability and continuity.
In recent years, with the maturity of lithium battery energy storage technology, industrial and commercial lithium storage batteries have been widely used in water purification plants, effectively solving the problems of unstable grid power supply, high peak-valley power consumption costs and emergency power demand. This article will focus on the working principle of lithium storage batteries, and elaborate on the application and specific working process of industrial and commercial lithium storage batteries in water purification plant equipment, combining with practical application scenarios.
First of all, it is necessary to clarify the working principle of lithium storage batteries, which is the foundation for their application in water purification plants. Lithium storage batteries rely on the intercalation and deintercalation of lithium ions between the positive and negative electrodes to realize the storage and release of electrical energy. During the charging process, lithium ions are deintercalated from the positive electrode, migrate through the electrolyte and intercalate into the negative electrode, while electrons flow through the external circuit to form a current; during the discharge process, the reverse reaction occurs, lithium ions are deintercalated from the negative electrode and return to the positive electrode, and the stored electrical energy is converted into electrical energy for external use.
Compared with traditional lead-acid batteries, lithium storage batteries have the advantages of high energy density, long cycle life, low self-discharge rate, fast charging speed and environmental friendliness, which make them more suitable for the long-term, stable and efficient operation needs of industrial and commercial scenarios such as water purification plants.
Water purification plants have complex operating procedures and high power consumption, and the power demand shows obvious peak-valley characteristics. During the peak water consumption period (such as morning and evening), the load of water pumps, filters and other equipment increases sharply, resulting in a surge in power demand; during the low water consumption period, the equipment load decreases, and the power demand also decreases accordingly.
In addition, the grid power supply may be interrupted due to natural disasters, equipment failures or grid maintenance, which will directly affect the normal operation of water purification equipment and even lead to water supply interruption. The application of industrial and commercial lithium storage batteries can effectively solve these problems, and its application scenarios in water purification plants are mainly concentrated in three aspects: peak-valley arbitrage, emergency backup power supply and auxiliary grid stability.
Peak-valley arbitrage is one of the most important application scenarios of industrial and commercial lithium storage batteries in water purification plants. The power grid implements peak-valley time-of-use electricity prices, that is, the electricity price during the peak power consumption period is much higher than that during the valley period. Water purification plants can use 241Kwh Industrial and Commercial Energy Storage(BESS) to store electrical energy during the valley period (when the electricity price is low). When the power demand reaches the peak and the electricity price rises, the stored electrical energy is released to supply power to the water purification equipment, thereby reducing the power consumption cost of the water plant. For example, a medium-sized water purification plant with a daily water supply of 100,000 tons needs to consume a lot of electrical energy for water pumping and filtration every day.
By configuring a 241Kwh Industrial and Commercial Energy Storage(BESS), the water plant can store about 241 kWh of electrical energy during the valley period, and release it during the peak period. According to the peak-valley electricity price difference of 0.3-0.5 yuan per kWh, the water plant can save tens of thousands of yuan in power costs every year. In addition, for some small-scale water purification equipment or auxiliary systems, 15Kwh Lithium Storage Battery can be configured to meet the peak-valley adjustment needs of small loads, which is more flexible and cost-effective.
Emergency backup power supply is another key application of industrial and commercial lithium storage batteries in water purification plants. Water purification equipment such as water pumps and disinfection systems cannot be shut down for a long time. Once the grid power supply is interrupted, it will lead to the suspension of water purification work, and the water quality will be affected due to the stagnation of water in the pipeline.
Industrial and commercial lithium storage batteries can be used as emergency backup power sources to ensure that key equipment can continue to operate when the grid power is cut off. 215Kwh Lithium Storage Batteries are often used as the main emergency backup power source for medium and large water purification plants, which can provide stable power supply for key equipment such as water pumps and disinfection systems for several hours to more than ten hours, buying time for grid repair and ensuring the continuity of water supply.
For example, when a sudden power outage occurs due to a typhoon or line failure, the 215Kwh Lithium Storage Batteries will automatically start within milliseconds, switch the power supply source, and ensure that the water purification equipment continues to operate, avoiding water supply interruption and water quality problems.
In addition, industrial and commercial lithium storage batteries can also assist in stabilizing the grid power supply. The operation of water purification equipment will generate certain impact loads on the power grid, especially when large-scale water pumps are started, which will cause voltage fluctuations and affect the stability of the grid. Lithium storage batteries can quickly adjust the output power according to the changes of the grid voltage and frequency, absorb the impact load, stabilize the grid voltage, and ensure the stable operation of both the grid and the water purification equipment. At the same time, with the popularization of renewable energy such as solar energy and wind energy in water purification plants, lithium storage batteries can also store the electrical energy generated by renewable energy, solve the problem of unstable output of renewable energy, and improve the utilization rate of renewable energy.
The working process of industrial and commercial lithium storage batteries in water purification plant equipment is closely linked with the operation process of the water plant, which can be divided into four stages: charging, standby, discharging and maintenance, and each stage has clear working objectives and operational requirements.
The charging stage is the premise for the lithium storage battery to play its role. The charging of industrial and commercial lithium storage batteries in water purification plants is mainly carried out during the valley period of the power grid (usually from 23:00 at night to 7:00 in the morning). The charging system of the lithium storage battery is connected to the grid, and the electrical energy of the grid is converted into chemical energy through the charger and stored in the battery.
During the charging process, the BMS (Battery Management System) will monitor the voltage, current, temperature and other parameters of each battery cell in real time to ensure that the charging process is safe and stable. For 241Kwh Industrial and Commercial Energy Storage(BESS) and 215Kwh Lithium Storage Batteries, the charging time is usually 6-8 hours, and the charging current and voltage are strictly controlled to avoid overcharging, which will affect the service life of the battery. For 15Kwh Lithium Storage Battery, the charging time is relatively short, usually 3-4 hours, which is suitable for small load backup and peak-valley adjustment.
The standby stage is the period when the lithium storage battery is ready to work after being fully charged. During this stage, the lithium storage battery is in a low-power consumption state, and the BMS continues to monitor the battery parameters to ensure that the battery is in a good state.
At the same time, the system is connected to the monitoring system of the water purification plant, and the working state of the lithium storage battery (such as remaining power, voltage, temperature) is transmitted to the control center in real time. The staff can grasp the working state of the battery at any time through the control center. During the standby stage, if the grid power supply is normal and the water purification equipment is running stably, the lithium storage battery will remain in standby state; if the grid power supply is abnormal or the equipment load reaches the peak, the battery will quickly enter the discharge stage.
The discharge stage is the core stage of the lithium storage battery playing its role, which is mainly divided into two scenarios: peak load shifting discharge and emergency backup discharge. In the peak load shifting discharge scenario, when the water purification plant enters the peak water consumption period and the power demand surges, the control system of the lithium storage battery will automatically start the discharge mode, and the chemical energy stored in the battery will be converted into electrical energy to supply power to the water purification equipment, reducing the dependence on grid peak power.
At this time, 241Kwh Industrial and Commercial Energy Storage(BESS) and 215Kwh Lithium Storage Batteries will output stable power according to the load demand, ensuring that the water pumps, filters and other equipment operate normally. In the emergency backup discharge scenario, when the grid power supply is interrupted, the lithium storage battery will automatically switch to the emergency power supply mode within milliseconds, and output power to the key equipment of the water purification plant to ensure the continuous operation of the equipment. The discharge time of the battery depends on the load of the equipment and the capacity of the battery. For example, 215Kwh Lithium Storage Batteries can supply power for key equipment for about 8-10 hours under the condition of normal load, which is enough to deal with general grid power outages.
The maintenance stage is an important guarantee for the long-term stable operation of industrial and commercial lithium storage batteries. The maintenance work mainly includes regular inspection of battery parameters, cleaning of battery modules, inspection of BMS operation status and replacement of damaged battery cells. The staff of the water purification plant need to conduct regular inspection on the lithium storage battery system, check whether the battery has leakage, bulging and other phenomena, whether the connection of the battery module is firm, and whether the BMS can work normally.
For 241Kwh Industrial and Commercial Energy Storage(BESS) and 215Kwh Lithium Storage Batteries, which have large capacity and many battery cells, regular maintenance is particularly important. It is usually necessary to conduct a comprehensive inspection every 3 months and a deep maintenance every 6 months to ensure that the battery system is in good working condition. For 15Kwh Lithium Storage Battery, the maintenance work is relatively simple, mainly regular inspection of battery voltage and temperature, and cleaning of the battery surface.
In conclusion, industrial and commercial lithium storage batteries, with their advantages of high energy density, long cycle life and stable performance, have broad application prospects in water purification plant equipment. They not only can help water purification plants reduce power consumption costs through peak-valley arbitrage, but also can ensure the continuous operation of equipment through emergency backup power supply, and assist in stabilizing the grid power supply.
The working process of 215Kwh Lithium Storage Batteries, 241Kwh Industrial and Commercial Energy Storage(BESS) and 15Kwh Lithium Storage Battery in water purification plants is scientific and standardized, covering charging, standby, discharging and maintenance stages, which ensures the safe and efficient operation of the battery system. With the continuous advancement of lithium battery technology and the increasing emphasis on energy conservation and emission reduction, industrial and commercial lithium storage batteries will play a more important role in the field of water purification, providing a more stable and reliable power guarantee for the safe water supply of cities.
