WATER FILTRATION PLANT

Pressure Sand Filter is used for removal of suspended solids & turbidity from Water & Wastewater. We, at ARISEO WATER offer Series of filters at a low cost, reliable and efficientway to filter your water.

Our unique design of Pressure Sand filter ensures the maximum utilization of the surface area, lesser pressure drop across the filter bed and effective removal of the impurities.

ARISEO WATER Filters are available in diameters from 0.225 Mts. to 4.0 Mts.(vertically) and in length from 3.0 Mts. mm to 11 Mts. (Horizontally) with flow ratesup to 350M3/Hr. these rugged, pre-engineered, pre-assembled units minimizeinstallation and start-up costs. Whether you require ROfeed process water or filtered water, ARISEO can fulfill applications requirement

Working Principle

Raw water is passed through the pressure sand filter, the filter media (Fine quartz sand) is supported on gravel & pebbles bed of progressively larger sizes. During the filtration cycle the filter bed retains the dirt and suspended particles from the water and accumulates within the filter bed. Clear water can be collected from the outlet of filter.

Pressure filters are typically used with hot process softeners to permit high-temperature operation and to prevent heat loss. The use of pressure filters eliminates the need for repumping of filtered water. Pressure filters are similar to gravity filters in that they include filter media, supporting bed, underdrain system, and control device; however, the filter shell has no wash water troughs.

Pressure filters, designed vertically or horizon-tally, have cylindrical steel shells and dished heads. Vertical pressure filters (see Figure 6-2) range in diameter from 1 to 10 ft with capacities as great as 300 gpm at filtration rates of 3 gpm/ft². Horizontal pressure filters, usually 8 ft in diameter, are 10-25 ft long with capacities from 200 to 600 gpm. These filters are separated into compartments to allow individual backwashing. Backwash water may be returned to the clarifier or softener for recovery.

Pressure filters are usually operated at a service flow rate of 3 gpm/ft². Dual or multimedia filters are designed for 6-8 gpm/ft². At ambient temperature, the recommended filter backwash rate is 6-8 gpm/ft² for anthracite and 13-15 gpm/ft² for sand. Anthracite filters associated with hot process softeners require a backwash rate of 12-15 gpm/ft² because the water is less dense at elevated operating temperatures. Cold water should not be used to backwash a hot process filter. This would cause expansion and contraction of the system metallurgy, which would lead to metal fatigue. Also, the oxygen-laden cold water would accelerate corrosion.

UPFLOW FILTERS

 

Upflow units contain a single filter medium–usually graded sand. The finest sand is at the top of the bed with the coarsest sand below. Gravel is retained by grids in a fixed position at the bottom of the unit. The function of the gravel is to ensure proper water distribution during the service cycle. Another grid above the graded sand prevents fluidization of the media. Air injection during cleaning (not considered backwash because the direction of flow is the same as when in-service) assists in the removal of solids and the reclassification of the filter media. During operation, the larger, coarse solids are removed at the bottom of the bed, while smaller solids particles are allowed to penetrate further into the media

With pleasure, we take this opportunity and introduce ARISEO WATER TECH. (ARISEO) as solutionprovider to water and waste water treatment.Our Core Team:ARISEO WATER core team is having aggregate experience over 10 years in design, engineering supply,installation, trouble shooting, Operation and Maintenance of Water, Waste Water, Desalination, Recycleand Zero Liquid Discharge Systems.The solutions we offer Turnkey: We undertake turnkey projects, AMC, Operation & Maintenance contracts, retrofit /refurbishment / augmentation of existing works, system up-gradation,  Consultancy : Pre order consultancy, basic designs and RFQ/Tender preparation and create anoptimum solution for a given problem with modern technology solution Packaged Units: We also provide standalone packaged / containerized units for portableapplication using Brackish and Seawater source, Sewage Treatments Plants (PSTPs), EffluentTreatment Plants (PETPs) for various small and medium sized applications.