Brief: Sodium hypochlorite solution is generally a pale yellow, transparent liquid. It is a strong oxidizing agent and a highly effective chlorine-containing disinfectant. Its bactericidal action includes the action of hypochlorous acid, the action of nascent oxygen, and chlorination. The oxidizing action of hypochlorous acid is the most important bactericidal mechanism of chlorine-containing disinfectants. Chlorine-containing disinfectants form hypochlorous acid in water, which acts on bacterial proteins. Hypochlorous acid can not only interact with the cell wall, but also, due to its small molecular size and lack of charge, it can penetrate into the cell and oxidize proteins or destroy their phosphate dehydrogenases, causing disordered sugar metabolism and leading to cell death.
The dry powder preparation and dosing device uses granular, powdered, or concentrated liquids such as flocculants, potassium permanganate, and activated carbon as raw materials to continuously and automatically prepare powders at the required concentration. The prepared solution is then continuously metered and added to the industrial process.
Brief:The skid-mounted dosing system series integrates an explosion-proof storage tank, metering pump, and level gauge into one unit. It also features high/low level alarms, emergency pressure relief, emergency shut-off, and overflow prevention safety and monitoring devices, making it a high-tech product with comprehensive functions, explosion-proof safety, and energy efficiency. Explosion-proof technology ensures the inherent safety of all electrical equipment, including the metering pump, control cabinet, exhaust fan, and lighting. Users simply place the modular dosing system near the dosing point, connect the dosing pipes, and turn on the power to start operation. This factory-installed complete system significantly reduces design and on-site construction workload, providing reliable guarantees for the overall quality, safety, and on-site commissioning. The entire container meets the design requirements of being user-friendly, space-flexible, adaptable, functionally complete, and aesthetically pleasing.
Brief:Coal mines are major water consumers, using water extensively for production, heating, fire fighting, bathing, coal washing, and coking, and are also major sources of wastewater. Using municipal water supply systems would not only increase water consumption but also waste significant resources. Since many water-using applications have relatively lenient water quality requirements, treated mine produced water can easily meet their standards. Therefore, establishing a mine produced water reuse system not only opens up a second water source, reduces fresh water intake, decreases wastewater discharge, and mitigates pollution of receiving water bodies, but also reduces investment in environmental pollution control. Thus, mine produced water reuse saves water resources and eliminates environmental pollution, offering multiple benefits. Mine produced water reuse realizes wastewater resource utilization and is currently the most effective way to solve the two major problems of water conservation and pollution control in coal mines. Treating mine produced water to a level suitable for miscellaneous use requires an infrastructure investment equivalent to drawing water from 30 kilometers away; treating it to a level suitable for reuse as high-requirement process water requires an infrastructure investment equivalent to drawing water from 40-60 kilometers away.
Brief:Oilfield anticoagulants are generally used in gas well fracturing, mainly playing a role in... It serves two purposes: firstly, to reduce the frictional resistance during gel application after bubbling during construction. First, it enhances the sand-carrying capacity of the construction gel; second, it reduces backflow. The density of vaporized water increases formation energy, which is beneficial for fracturing fluids. Return to the factory.
Brief:In electroplating, brighteners are added to enhance the gloss and corrosion resistance of the plated surface. Their main function is to remove oil, oxidized and unoxidized surface impurities from the metal surface through active surfaces, maintaining the cleanliness, gloss, and colorfastness of the object. They also affect the texture of the appearance through abrasive action, improving polishing efficiency. Electroplating additive dosing systems can replace manual labor by adding precise amounts of additives at accurate time intervals. Systems equipped with remote transmission can also enable unattended workshops. An ammeter collects the cumulative power consumption during the electroplating process. When this value reaches a preset value, the ammeter instructs the metering pump to operate, initiating additive dosing, and simultaneously, a timer starts counting. When the timer completes, the metering pump stops, ending additive dosing. At the start of additive dosing, the ammeter automatically resets to zero, and the next accumulation begins, repeating the process.
Brief:Swimming pools, as venues integrating health, entertainment, leisure, and even aesthetics, are ubiquitous in high-end hotels, entertainment venues, schools, and residential communities. During the pool's operating season, maintaining good water quality and meeting relevant health department regulations is crucial to swimmers' health. The long-term quality of the water depends on the design and investment in the water treatment system. The chemicals added to swimming pool water treatment systems are classified by their function as follows: coagulants, disinfectants, algaecides, and pH adjusters. For incoming pool water requiring purification, coagulants are pre-added to the pipes. As the water passes through the pipes and enters the circulating water pump, it mixes and reacts thoroughly with the coagulant, causing tiny suspended solids in the pool water to coagulate, forming "flocculation." This floc is then filtered and retained by a quartz sand filter (a composite material of high-molecular-weight ethylene and carbon steel). Afterward, the pool water passes through a heat exchanger, where it is heated and disinfectants are added to kill harmful bacteria such as coliforms, while maintaining the residual chlorine levels required by national water quality standards. If the water turns green, algaecides should be added, and the pH balance and residual chlorine levels should be automatically monitored. After the pool water meets national testing standards, it is refilled into the swimming pool through an adjustable water supply device installed on the pool wall.
Brief:Papermaking and dyeing auxiliary agent dosing devices are mainly used for the automatic quantitative dosing of sizing agents, reinforcing agents, retention and filtration aids, bactericides, and cleaning agents during the papermaking process. Multifunctional papermaking auxiliary agents are water-soluble linear polymeric electrolytes copolymerized from acrylamide and modifiers. During papermaking, they can form bridging and cloning with the dispersed pulp phase through various mechanical, physical, and chemical interactions, causing fibers and fillers to interlock and improve paper strength. Furthermore, the polar groups of the auxiliary agent molecules, especially cationic groups, aggregate with anionic groups in the pulp microfibers and talc through adsorption and cloning, forming aggregates that settle on the paper sheet. Additionally, the quaternary ammonium groups in the auxiliary agent reduce the surface tension of the aggregates, fibers, and talc, and decrease the contact angle with water molecules, making it easier for water molecules to detach from the paper wire under stress.
Brief:Because water treatment processes often require the pH value of water to be controlled within a certain range, artificially adding acid or alkali to the water is the most direct and effective way to meet this requirement.
Commonly used acid and alkali neutralizing agents include sulfuric acid, hydrochloric acid, calcium ammonia, calcium hydroxide, sodium carbonate, etc.
Brief:The working principle of a circulating water chemical dosing system: During natural operation, industrial circulating cooling systems are prone to scaling or corrosion due to the combined effects of factors such as the hardness, alkalinity, pH value, concentration ratio, temperature, and ambient humidity of the circulating water. Both of these factors negatively impact the safety and operational efficiency of the circulating cooling system. To inhibit scaling or corrosion, corrosion inhibitors or scale inhibitors must be artificially added to the water. Commonly used corrosion inhibitors and scale inhibitors include polyphosphates, zinc salts, polycarboxylate salts, and phosphonates, etc.
Brief:This device mainly consists of five parts: a liquid metering pump system, a dissolution and preparation system, a metering and dosing system, a safety system, and a control system.
Hydrazine is drawn into the metering system via a water ejector, then added proportionally to the dissolution and mixing system with demineralized water or condensate, and finally added to the boiler feedwater via the metering and dosing system. Dosing control can be manual or automatic, based on control signals from a higher-level system.
This device can not only add hydrazine, but with slight modifications, it can also add other oxygen scavengers such as carbazide and dimethyl ketoxime.
Brief:Calcium and magnesium hardness in boiler feedwater can undergo chemical reactions or crystallize at high temperatures, forming insoluble scale that adheres firmly to the boiler's heating surfaces. This scale is a poor conductor of heat, hindering heat transfer and potentially causing boiler tube rupture in severe cases. Furthermore, it can induce and exacerbate chemical corrosion of under-scale metals, posing a significant hazard. Although boiler condensate and feedwater undergo rigorous softening and desalination treatment, small amounts of calcium and magnesium hardness still enter the boiler water. If this hardness is not treated, it can also form scale, threatening the safe operation of the boiler. Currently, adding phosphate to the boiler water is the most suitable treatment method, with the reaction as follows:
Basic calcium phosphate is a soft water sludge that is easily discharged with boiler blowdown and will not adhere to the inside of the boiler to form scale.
