Reverse osmosis for RO water treatment
USD $8,000 - $15,000 /Set
Min.Order:1 Set
Qingdao Yimei Environment Project Co., Ltd.
Description
Rely on national standard GB19298-2003 china drinking water sanitary standard,aim at user water quality condition , based on design reasonable,effluent water qualified, work continuous,steady,minimum investment,convenient operating maintenance principle, make 2t/h RO plant.
Design standard
Raw water : ground water
Water yield 2m3/h, operation time: 12h per day, desalting rate ≥95%, recovery 75%,
Raw water conductivity ≤1000us/cm,the output cleaning water standard electrical conductivity 2us/cm-5 us/cm.
Raw Water pretreatment part
Raw water contains many impurities, such as suspended substance,
colloid, organic and inorganic matter. In order to ensure the system
reverse osmosis preliminary desalination part of the normal operation,
you must first remove the suspended solids in water, colloid, organic
matter, etc., so that meet the requirements of the reverse osmosis water, so the system Settings of raw water pretreatment. Raw water pretreatment part includes mechanical filter, activated carbon filter, softener,
security filter.
(1)Mechanical filter Reverse osmosis equipment to the water
turbidity have higher requirements, especially the reverse osmosis water pollution index for SDI value is less than 4, turbidity less than 1 ntu.
Many medium filter of the filter material, including five types of quartz
sand, used to remove the suspended solids and the stability of raw
water off the colloid
(2)Active Carbon Filter
Reverse osmosis equipment requirement logged residual chlorine content is less than 0.1 mg/l, so using activated carbon filter removal raw water of residual chlorine, prevent reverse osmosis membrane polluted. At the same time can be further raw water adsorption of organic matter. Activated carbon filter and fill in the refined shell type activated carbon for adsorption raw water of residual chlorine, organic matter, part of the pigment and harmful material, educe the chemical oxygen consumption COD. Activated carbon is widely used in water for life and food industrial water purification, due to the effect of the specific surface area is very big, the surface and was full of average for twenty - 30 angstrom micro hole, therefore, activated carbon has the very high adsorption capacity.
(3)Softener
Using sodium ion exchange resin will raw water of
calcium and magnesium ion replacement out, after the equipment after
out for hardness very low softening water. When the resin adsorption to a certain amount of calcium and magnesium ions, must be regenerated: saturated brine soak resin the resin of calcium and magnesium in the
plasma and replacement out, restore resin softening exchange capacity, and will waste discharge. The regeneration process include: backwashing - loose resin layer, suction salt regeneration - happen exchange
reaction, flushing (is wash) - will chemical reaction exchange down of
calcium and magnesium ions rinse, water injection - to the next
regeneration
(4)Security Filter
The security filter belong to micro filter
equipment, in the pretreatment system up insurance effect, when
mechanical filter working condition not normal when checks, to ensure
that all cases can provide qualified water supply pipeline, prevent the
water and the particle enters the water pump and reverse osmosis
system, especially set up security filter as the final filter unit.When filter in and out of the
differential pressure greater than 0.1 Mpa to replace filter (caused by the filter medium directly into the microporous membrane filter in the gap,
so that it is difficult to through the acid and alkali cleaning recovery
throughput). Filter structure can meet the requirements of rapid change
filter