Polyaluminium chloride manufacturers reveal how waterworks are handled and how costs are saved.
Water companies with polyaluminium chloride treatment, to achieve national drinking water purification treatment. The fundamental difference between polyaluminium chloride used by water companies and traditional inorganic coagulants is that traditional inorganic coagulants are low molecular weight crystalline salts, while the structure of polyaluminium chloride is composed of polyvalent carboxyl complexes with changeable forms, with fast flocculation and sedimentation speed, and is suitable for SS, BOD, arsenic, mercury and other heavy metal ions. Therefore, polyaluminium chloride is unanimously recommend by water companies!
Feng Hua group company polyaluminium chloride manufacturers tell you how to deal with tap water:
Before 1. use, polyaluminium chloride is put into a dissolution pool at a certain concentration (10-30%), tap water is injected into the dissolution pool, stirred to fully hydrolyze it, left to stand until it is reddish brown liquid, diluted with water to the required concentration, and then coagulated. The water plant can also be directly added with 2-5%, and the industrial wastewater treatment can be directly added with 5-10%.
The determination of 2. dosage can be determined according to the nature of raw water through production debugging or burning experiments depending on the amount of alum flower formation. The water plant can use the original dosage of other chemicals as a reference. Under the same conditions, the dosage of polyaluminum chloride and solid aluminum sulfate is slightly lower, which is 1/3-1/4 of the dosage of solid aluminum sulfate. If the original use of liquid products, according to the corresponding drug concentration calculation discretion.
When the 3. is used, the above-mentioned prepared liquid medicine is pumped into the metering tank, and the liquid medicine is added and coagulated with the raw water by metering.
4. is generally used on the same day of preparation, dispensing requires tap water, a slight sediment is a normal phenomenon.
Compared with other coagulants, polyaluminium chloride has the following advantages:
1. Wide application range, wide adaptation to water.
2. Easy to quickly form large alum flowers, good precipitation. The flocculation generated by coagulation reaction is coarse, not easy to break, good re-coagulation, fast sedimentation speed, good filtration of precipitated water, strong sediment compression and easy dehydration. The purified water quality is better than inorganic coagulants such as aluminum sulfate, and the cost of water purification is 15-30% lower than that.
Due to the rapid reaction of polyaluminum chloride, electric and dehydration power, molecular chain length, bridge quickly, it can overcome the difficulties of low temperature, low turbidity water treatment.
The suitable pH range is wide (5-9), and the pH value and alkalinity of the treated water are small.
When the water temperature is low, it can still maintain a stable precipitation effect.
6. Alkalinity than other aluminum salt, iron salt high, soluble in water, easy to use, stable quality. Solubility is better than aluminum sulfate, less corrosive to equipment.
7. The flocs generated by polyaluminium chloride are network-shaped and have a large specific surface area, so they have a strong adsorption and removal effect on iron, fluorine, arsenic and thallus in water.
8. Solid polyaluminum chloride high content of active ingredients, low transportation costs
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