In order to have a better water treatment effect of general flocculant Polyferric sulfate dosing methods need to pay attention to what? Yuxinhuan chemical industry today for us related to the introduction of its application methods and precautions.
1, Polymerization of ferric sulfate flocculation treatment to determine the dosage, according to the nature of the raw water through the production of debugging or beaker test depending on the alum composition of the appropriate amount of water plant can be used as a reference to the original dosage of other medicines, under the same conditions of the product and the dosage of solid polymerization of aluminum chloride roughly equivalent to the dosage of solid aluminum sulfate dosage of 1 / 3 - 1/4 If the original use of the liquid products, according to the corresponding concentration of pharmaceutical accounting discretionary. Accounting discretion. Roughly according to the weight ratio of 1:3.
2, before use, the product according to a certain concentration (10-30%) into the alum pool, injected into the tap water and mixing so that it is fully hydrolyzed, static until it is a reddish-brown liquid, and then diluted to the required concentration of water to be added to the coagulation. Water plant can also be formulated into 2-5% direct injection, and then diluted to the required concentration of coagulation.
3、Industrial wastewater treatment is generally manufactured on the same day, the day of use, dosing needs tap water, a little sediment is normal phenomenon of the reason directly into the 5-10% dosing.
4, Polymerization of ferric sulfate attention to the coagulation process of the three stages of hydraulic conditions and the composition of alum flowers.
ü coagulation stage: the liquid is injected into the coagulation tank and raw water rapid coagulation in a very short period of time to constitute a fine alum flower process, at this moment the water body becomes more and more turbid, it requires the water flow can produce intense turbulence. Beaker test should be fast (250-300 rpm) mixing 10-30S, generally no more than 2min.
ü flocculation stage: the alum growth and coarsening of the process, requiring the appropriate degree of turbulence and meet the residence time (10-15min), to the later stage can be observed in many alum collection slowly sinking, constituting a clear layer of the surface. Beaker test first at 150 rpm mixing about 6 minutes, and then at 60 rpm mixing about 4 minutes to be suspended.
ü Settling stage: Polymerization of ferric sulfate it is in the settling tank floc settling process, the requirement of slow water flow, in order to improve the efficiency of the general use of inclined tube (plate) settling tank (the best use of air flotation method of flocs), a lot of coarse and large alum flowers by the wall of the inclined tube (plate) obstructed and piled up in the bottom of the pool, the upper layer of water for the water is clarified, the remaining particle size of the small, dense alum flowers slowly down while continuing to collide with each other! Junction Large, to the late residual turbidity is not changed at all. Beaker test should be 20-30 rpm slow stirring for 5 minutes, and then 10 minutes of static precipitation, measurement of turbidity.
5, this product is used in environmental protection, industrial wastewater treatment, the use of the same with the water plant, high color, high COD, BOD raw water treatment, supplemented by the role of additives work very well.
6, enhanced filtration, mainly the rational choice of filter layer structure and filter aids to improve the removal rate of the filter.
7, the use of chemical coagulation method of enterprises, the original equipment does not need to make a major transformation, only the addition of alum pool can be used.
8、Polymerization of ferric sulfate should be kept in a dry, moisture-proof, heat-proof place (< 80oC, do not damage the packaging, the product can be stored for a long time).
Yu Xinhuan Chemical Co., Ltd. is a company dedicated to the management of water pollution and resource use of high-tech environmental protection skills of professional companies. The main business scope of our company includes: sewage, sludge and wastewater treatment, and we have made many scientific research achievements and proprietary skills, which are successfully applied to the projects of environmental pollution management in various fields.
