In modern cities, waterworks is an important infrastructure to ensure residents' water safety and health. Waterworks convert raw water into tap water that meets drinking water standards through a series of complex processes. In this process, polyaluminum chloride (PAC), as an important water treatment agent, plays an indispensable role.
Introduction to water production process of Water Treatment Chemicals waterworks
The process of making water in waterworks usually includes the following main steps: raw water mixing, flocculation, precipitation, filtration, disinfection and transportation. Raw water extracted from rivers, lakes or groundwater is treated in these links and eventually becomes tap water that meets drinking water standards.
Raw water mixing: First, the raw water is pumped to the water plant through the pumping station, and at this stage through the mixing equipment to add an appropriate amount of coagulant, so that the agent quickly and evenly dispersed in the water, laying the foundation for subsequent treatment.
Flocculation: Next, the raw water enters the coagulation reaction tank, to which an appropriate amount of water treatment agent, such as polyaluminum chloride (PAC), is added. The aluminum ions ionized by PAC in water have a strong adsorption capacity, and can aggregate suspended matter, colloids and small particles in water into larger flocculants, which is convenient for subsequent sedimentation.
Precipitation: The water after flocculation flows into the sedimentation tank, and under the action of gravity, the flocculant gradually settles to the bottom of the pool, achieving solid-liquid separation, thereby removing most of the suspended matter and colloidal matter in the water.
Filtration: The precipitated water is then passed through the filter, and the filter material layer such as quartz sand is used to further remove the fine suspended matter, organic matter, bacteria and viruses and other impurities in the water.
Disinfection: The filtered water enters the clear pool for final disinfection treatment to kill bacteria and viruses in the water and ensure the safety of water quality.
Transportation: The sterilized water is raised by the water supply pump room, and then transported to thousands of households through the water transmission and distribution network.
The specific function of polyaluminum chloride in the process of making water
In the water production process of waterworks, polyaluminum chloride plays a key role in the flocculation process. Specifically, the role of PAC is mainly reflected in the following aspects:
Coagulation:
Polyaluminum Chloride has excellent coagulation performance and can quickly aggregate suspended matter and particulate matter in water into larger clumps, which are easy to precipitate or filter under the action of gravity, so as to effectively remove the muddy matter in water and improve the transparency and clarity of water quality.
Colloidal material removal: PAC can also effectively remove colloidal substances in water, including organic and inorganic colloids. These colloidal substances are often difficult to remove through traditional filtration methods, and PAC, through its strong adsorption and neutralization capabilities, can aggregate these colloidal substances into large particles for subsequent processing.
Bactericidal effect: PAC also has a certain bactericidal ability, can destroy the cell membrane structure of bacteria and viruses, reduce the concentration of microorganisms in the water, so as to ensure that the water quality meets the health standards.
pH adjustment: In addition, PAC can also increase the pH value of water saving to a certain extent, so that it is kept within the appropriate range, which helps the subsequent treatment steps to proceed smoothly.
Precautions for the use of polyaluminum chloride
Although polyaluminum chloride has many advantages in water treatment, its use also needs to strictly control the dosage. Too little dosage will lead to poor coagulation effect and can not effectively remove suspended matter and colloidal matter; If the dosage is too large, too much aluminum ions may be introduced, which may cause potential risks to human health. Therefore, the waterworks need to reasonably determine the dosage of PAC according to factors such as raw water quality, treatment process and effluent water quality requirements, and closely monitor and manage the treated water quality to ensure that the water quality meets health and safety standards.
In short, polyaluminum chloride plays an important role in the water production process of the waterworks, and it effectively improves the water quality and safety of tap water with its excellent coagulation, colloidal material removal and sterilization capabilities. In the future, with the continuous progress of technology and the improvement of environmental awareness, we have reason to believe that the waterworks will adopt more advanced and environmentally friendly water treatment programs to provide safer and healthier drinking water for the majority of residents.
Focus on water treatment, just for a healthy world! Henan Hongze Environmental Protection Technology Co is a professional enterprise engaged in the development, production and sales of polymer flocculants. The main products are "green water clean" brand polyaluminum chloride,
Polymerized Ferrous Sulfate ， Trichloroisocyanuric Acid polyferric sulfate and other water purifiers. With an annual output of 10,000 tons, the products are sold all over the country, and actively explore the international market. The company will continue to uphold the business philosophy of "integrity, innovation and win-win", provide customers with quality products and services, and make due contributions to the society.
Henan Hongze Environmental Protection Technology Co., Ltd