With the development trend of social economy, the problem of environmental pollution has become more and more concerned by everyone, and sludge disposal has become the difficulty of wastewater treatment in processing plants. There are various types of dosing devices, silt dosing device is one of them, let's take a look at the dosing device of dosing metering pump phosphate what is the correct treatment method.

1. Phosphate solution

The method is to add phosphate water solution under the standard of partial alkali in the pot water, so that the phosphate in the pot water is maintained within the concentration range, the sodium ion in the water and the phosphate root are reflected into the partial alkali calcium carbonate, a small amount of aluminum ion and the aluminum silicate in the pot water to produce serpentine rock. Metabasic calcium carbonate and serpentine rock are refractory chemical substances, dispersed in pot water, softened water residue, very easy to discharge with the boiler boiler discharge, not easy to adhere to the heating surface of the secondary fish scale.

2. Pan water phosphate "temporary disappearance" situation

When the amount of phosphate mud in some boilers is normal, the phosphate concentration in the pot water will be significantly reduced when the boiler operating load is increased, and when the boiler load is reduced or the furnace is terminated, the phosphate concentration in the pot water will be increased again, and this abnormal water condition is called the phosphate "temperature". "Counterfeit disappeared" condition. The way to avoid this situation is to implement a low phosphate solution, a balanced phosphate boiler water treatment method, or the application of evaporation solution. Isophosphate solution can not deal with the loss of phosphate, but can avoid the alkali erosion caused by the loss of phosphate.

3. Such ingredients as phosphate solution

The method is to mix boiler water with trisodium phosphate and sodium hydrogen phosphate, there is no water in the pot are converted to trisodium phosphate, sodium hydroxide solution, only the mole ratio (R) of the water in the pot and phosphate ions (Na/PO4 manipulation in the scope, can make the water in the pot with sufficient pH value and concentration). Quantitative analysis of PO43- no sodium hydroxide solution.

When resolved with equal phosphates, the phosphates are very easy to disappear and etch. In order to solve this problem, the balanced phosphate solution (EPT) method is selected.