1. What are the main measures to reduce acid and alkali consumption?
(1) Ensure the inlet water quality;
(2) Ensure the regeneration quality and prolong the cycle of water production;
(3) Ensure the quality and purity of regeneration solution, and strictly control the regeneration operation procedures;
(4) Ensure safe, reliable and normal operation of equipment.
2. Basic concept of coagulation?
As the colloidal particles in the water are negatively charged, they repel each other. At the same time, they constantly do "Brownian movement" in the water, which is extremely stable and not easy to sink. When an appropriate amount of coagulant is added, the tiny colloidal particles in the water can be destabilized, resulting in the adsorption bridging effect, and the flocculent will sink rapidly. This process is called coagulation.
3. What is the purpose of using coagulant aids?
(1) Improve the floc structure to make its particles grow up, strong and heavy;
(2) Adjust the PH value and alkalinity of the treated water to achieve the best coagulation conditions and improve the coagulation effect; Coagulant aids themselves do not play a role in coagulation, but can promote the coagulation process of impurities in water.
4. What are the main factors affecting the coagulation effect?
(1) PH of water: if PAC is added to hydrolyze to produce Al (OH) 3 colloid, the dissolution is minimum when PH is 6.5-7.5, and the coagulation effect is also good;
(2) Alkalinity of water: when the alkalinity is insufficient, the coagulant continuously generates H+during hydrolysis, which reduces the PH value and the coagulation effect;
(3) Water temperature: when the temperature is low, the viscosity of water is large, the hydrolysis speed is slow, the floccule formation is slow, and the structure is loose, and the particles are small and not easy to precipitate;
(4) Composition of impurities in water: the nature and concentration of impurities have a great impact on the coagulation effect.
5. Purpose of water treatment in boiler?
(1) Prevent water and steam of boiler body and auxiliary system from accumulating sediment and corrosion during operation. Improve the heat transfer and conduction efficiency of the boiler.
(2) Ensure steam quality, prevent scaling and corrosion of turbine components, reduce boiler blowdown loss and improve economic benefits under the condition of ensuring water quality.
How many questions do you have about pure water treatment?
2022 11/01