Name: spray PFS (referred to as solid iron or poly SPFS) Molecular formula: [Fe2 (OH) n (SO4) 3-n / 2] m morphological characters: pale yellow amorphous solid powder, easily soluble in water, 10% (by weight) aqueous solution of a reddish brown transparent solution. Hygroscopic. Performance indicators: meet the national standard "Purifying PFS" (GB14591-2006) Item Index GB14591-2006 (Ⅱ) The product total iron content,%, ≥ 19 21 reducing substances (as Fe2 +) content %, ≤ 0.15 0.01 Basicity,% 9.0-14.0 12.2 PH (1% solution) 3.5-5.0 4.1 arsenic (As) content,%, ≤ 0.0008 0.0001 Lead (Pb) content,%, ≤ 0.0015 0.0001 insoluble content, %, ≤ 0.5 0.2 II Uses: Widely used in drinking water, industrial water, industrial wastewater, urban sewage, sludge dewatering purification. Third, the application features: Compared with other inorganic flocculants has the following characteristics: a new, high quality, efficient inorganic polymer flocculant iron salts; 2 excellent coagulation performance, alum dense settlement rate; 3 Net.. the effect of water quality, water quality, does not contain aluminum, chlorine and heavy metals and other harmful substances, nor the transfer of iron ions in the aqueous phase, non-toxic, harmless, safe and reliable; 4 turbidity, bleaching, de-oiling, dehydration, in addition to bacteria, odor, algae, removal of COD, BOD and heavy metal ions and significant effect; 5 PH value of water bodies to adapt to a wide range of 4-11, the best value in the range of 6-9 PH, PH value of the raw water purification Small changes in the magnitude of the total alkalinity, processing equipment, small corrosive; 6 micro pollution, including algae, low temperature and turbidity of raw water purification effect is significant, high turbidity raw water purification effect is a plus; 7 low dosage, low cost, processing cost savings of 20% -50%. The use of methods and precautions: Due to the nature of the raw water varies, according to the different circumstances, site commissioning or for beaker test to obtain the best conditions and the best dosage to achieve the best treatment effect. 1, before using this product at a certain concentration (10-30%) alum dissolved into the pool, the water injection stirring to fully hydrolyzed, standing to reddish brown liquid, and then diluted to the desired concentration watered dosing coagulation . Waterworks also dubbed 2-5% direct dosing, industrial wastewater treatment dubbed 5-10% direct dosing. 2, the dosage is determined, based on the nature of the raw water can be formed by commissioning or beaker experiment, as may be the amount of alum, made raw water can be used in other dosage as a reference, the products and the solid chloride polymerization under the same conditions roughly the same amount of aluminum, aluminum sulfate solid dosage 1/3-1/4. If the original product with a liquid, can be calculated according to the discretion of the appropriate agent concentration. Approximate weight ratio of 1:3 may be. 3, when used, will be above the prepared liquid, pumped into the measuring tank, liquid dosing and coagulation of raw water through metering. 4, the date of the preparation date of the next general use, dispensing needs water, a little sediment is normal. 5, pay attention to the water conditions of the three stages of the coagulation process and the formation of alum status. (1) condensed phases: a liquid into the coagulation tank and raw water coagulation in a very rapid formation of fine alum in a short time, when the water becomes more turbid, it requires water to produce intense turbulence. Beaker experiment should be fast (250-300 rev / min) stirring 10-30S, generally no more than 2min. (2) flocculation stages: growing a thicker alum process, require adequate degree of turbulence and sufficient residence time (10-15min), the latter can be observed to large flocks gather slowly sink to form a clear surface layer. Beaker experiment first / min stirring for about 6 minutes at 150 rpm, and then to 60 rev / min stirring for about 4 minutes to a suspended state. (3) the settlement stage: it is in the process of settling floc settling tank, requiring slow water flow, in order to improve the efficiency of commonly used inclined tube (plate) settling tank (preferably flotation separation floc), a large number of coarse alum perianth inclined tube (plate) deposited on the bottom wall of the barrier, the upper water is clarified water, the rest of the small particle size, density alum side down slowly, while continuing to collide big knot, to the late residual turbidity basically unchanged. Beaker test should be 20-30 rev / min slow stirring for 5 minutes, 10 minutes static Shen, measuring the residual turbidity. 6, enhanced filtration, mainly filter layer structure and the rational use of aid to improve removal filter, which is an important measure to improve water quality. 7, the product used in environmental protection, processing, and use of industrial waste water system much the same, high color, high COD, BOD of the raw water, supplemented by auxiliary effect is very good. 8, the use of chemical coagulation method of business, the original use of the equipment without the need for major reform, just added to dissolve alum pool using this product. 9, the product must be stored in a dry, moisture, avoid hot places (<80oC, do not damage the packaging, the product can be long-term storage). 10, the product must be dissolved before use, dissolve the device and dosing facilities should be corrosion-resistant materials.