Diatomaceous earth filter aid for sewage treatment

(A) Sewage treatment with diatomaceous earth filter aid; Diatomite is a biological cherts has a porous lower plants after the ancient single-celled diatom remains accumulation, after the initial diagenesis formed. Its main chemical composition is amorphous in SiO2, and contains small amounts of AL2O3, Fe2O3, CaO and organic matter, which consists of diatom shell walls composed of multiple levels on the wall shell, a large, ordered pores. This unique microporous structure, granting it a number of excellent properties: high porosity, large surface area, the proportion of small, strong adsorption, abrasion, acid, low thermal conductivity, flame retardant insulation, noise insulation, etc., is widely used in food, building materials, chemicals, rubber, petrochemical, pharmaceutical, metallurgy, paint, machinery, energy, paint, water treatment and other industries. Diatomite especially strong, it can absorb 1.5-4 times equal to the quality of their water and 1.1 to 1.5 times the oil. Its potential is negative, the absolute value of large, positively charged adsorption ability. So the sewage has an excellent cleaning effect. For the use of the adsorption tower purification device, in addition to adsorption, there sieving effect and depth effects. Diatomite water treatment agent wastewater main principle is to use sorption individual diatom will fine particles increases, coupled with its own flocculation, rapid and efficient removal of fine suspended solids, and settlement rate, sludge volume is small, easy to separate; to reduce the overall costs of wastewater treatment, while, diatomite can also remove part of COD, BOD, S, NH3-N, CN and some heavy metal ions. The basic principles of treatment suspension diatomite is diatomaceous earth in small, individual diatom porous first destroy the balance between the suspension and then the fine suspended solids adsorbed around diatoms, form the center of a large diatom particle group, this group is relatively independent individual large, high internal porosity, can rapidly precipitated sludge, the sludge is small, the precipitate triamcinolone, easy to dehydration, the solid - liquid separation is easy, and there is filtration, water suspended solids content is low, waste easy to dry, easy to store and transport; also while holding the other harmful substances, and non-toxic, harmless, non-corrosive, wide use, waste do other products. The use of treated sewage effluent diatomite, is a better than all the traditional process of sewage treatment at home and abroad with the international advanced level. (Ii) release agent spent diatomite; origin: Changbai Korean Autonomous County is the ideal vehicle for efficient fertilizer diatomite, the pair of capacitive nitrogen, phosphorus and potassium adsorption ability, after drying by adsorption, phosphorus, ammonium a chemical reaction on the support and evenly distributed, can effectively nitrogen, phosphorus components up to 50%, is an efficient fertilizer, has a sustained action in the soil, favorable for crops. Features: Efficient: light weight, fineness uniform, adsorption performance, PH value neutral, non-toxic, mixing uniformity, diatomaceous earth can be an effective fertilizer application of fertilizer, crop growth and promote soil improvement. Save time: reduce the number of fertilizer. Effort: Avoid repeated fertilization, saving manpower. Save money: sustained, rainwater flow brush small amount of fertilizer loss, reduce the use of fertilizers. Environmental: reduce fertilizer on the surrounding water and other environmental pollution.