FRP Tank 500LPH Desalination Reverse Osmosis Waste Water Treatment Plant For Home

What is Reverse Osmosis?

Reverse Osmosis is a technology that is used to remove a large majority of contaminants from water by pushing the water under pressure through a semi-permeable membrane.

Reverse Osmosis is the process of Osmosis in reverse. Whereas Osmosis occurs naturally without 

energy 

required, to reverse the process of osmosis you need to apply energy to the more saline solution. A

 reverse 

osmosis membrane is a semi-permeable membrane that allows the passage of water molecules but not the 

majority of dissolved 

salts, organics, bacteria and pyrogens. However, you need to 'push' the water through the reverse 

osmosis membrane by 

applying pressure that is greater than the naturally occurring osmotic pressure in order to desalinate 

(demineralize or deionize) water in the process, allowing pure water through while holding back a

 majority of 

contaminants.

How does Reverse Osmosis work?

Reverse Osmosis works by using a high pressure pump to increase the pressure on the salt side 

of the RO and force the water across the semi-permeable RO membrane, leaving almost all (around 95% 

to 99%) of dissolved salts behind in the 

reject stream. 

 

The amount of pressure required depends on the salt concentration of the feed water. The more 

concentrated the feed water, the more pressure is required to overcome the osmotic pressure.

The desalinated water that is demineralized or deionized, is called permeate (or product) water. The 

water stream that carries the concentrated contaminants that did not pass through the RO membrane

 is called the reject (or concentrate) stream.

 

As the feed water enters the RO membrane under pressure (enough pressure to overcome osmotic

 pressure) 

the water molecules pass through the semi-permeable membrane and the salts and other contaminants are 

not allowed to pass and are discharged

 through

 the reject stream (also known as the concentrate or brine stream), which goes to drain or can be fed 

back into

 the feed water supply in some circumstances to be recycled through the RO system to save water. 

The water

 that makes it through the RO membrane is called permeate or product water and usually has around 

95% to 99% of the dissolved salts removed from it.

What will Reverse Osmosis remove from water?

Reverse Osmosis is capable of removing up to 99%+ of the dissolved salts (ions), particles, colloids, 

organics, bacteria and pyrogens from the feed water (although an RO system should not be relied upon

 to remove 100% of bacteria and viruses). An RO membrane rejects contaminants based on their size 

and charge. Any contaminant that has a molecular weight greater than 200 is likely rejected by a 

properly running RO system (for comparison a water molecule has a MW of 18). Likewise, the greate

r the ionic charge of the contaminant, the more likely it will be unable to pass through the RO membrane.

 For example, a sodium ion has only one charge (monovalent) and is not rejected by the RO membrane 

as well as calcium for example, which has two charges. Likewise, this is why an RO system does not 

remove gases such as CO2 very well because they are not highly ionized (charged) while in solution 

and have a very low molecular weight. Because an RO system does not remove gases, the permeate 

water can have a slightly lower than normal pH level depending on CO2 levels in the feed water as the 

CO2 is converted to carbonic acid.

Reverse Osmosis is very effective in treating brackish, surface and ground water for both large and 

small flows applications. Some examples of industries that use RO water include pharmaceutical, 

boiler feed water, food and beverage, metal finishing and semiconductor manufacturing to name a few.

 

 

Specifications:

 

NO.		Description	Name of equipment, parts and model number	Material	Qty
1		The raw water tank	volume:1m3		1set
			Including Liquid level switch
2		Raw water pump	CHL2-3	assembling unit	1set
			Flow:1m3/h, Lift: 27m, Power rate: 0.55kw
3		Mechanical filter	Size: Φ300×1400	glass fiber/stainless steel	1set
Automatic			Include: (1) tube valve parts
			(2)inner embalming process
			(3)the refined quartz sand		0.1t
4		Active carbon filter	Size:Φ300×1500	glass fiber/stainless steel	1set
Automatic			Including: (1) tube valve parts
			(2)inner embalming process
			(3)nut shell activated carbon		0.03t
5		Automatic water softener	Size:Φ250×1400	glass fiber/stainless steel	1set
Automatic			Including: (1) tube valve parts
			(2)inner embalming process
			(3)001*7cationic resin		0.05t
		Ultrafilter	Size:Φ170×650	SUS304	1set
			Including: 5μm×20”Cartridge	PP	3piecs
6		Reverse osmosis system	Capacity: 0.5m3/hour
			Model: CDL2-15	SUS304	1set
			Flow: 1.0m3/h, Lift: 134m,Power rate:1.5kw
			High/low pressure switch control FNC K		1set
			4’’ Seamless pressure vessel one piece		2branches
			ESPA -4040		2piecs
			Stainless steel frame		1set
			control panel		1piece
			Instrument: (1)flow meter	organic	2piecs
			(2)pressure gauge		2piecs
			(3)conduct meter: CM-230		1set
7	Ultraviolet sterilization		specification:0.5 m3/h		1set
8	Pure water tank		Volume:1m3		1set
			Including liquid level switch		1piece
9	electrical control system		PLC Siemens,5.7 -inch LCD screen black silk ribbon		1set
10	System tube valve parts		low tension UPVC, high pressureSUS304		1set

 

Removing ratio of reverse osmosis on ions:

 

Type of ions	Removing efficiency	Type of ions	Removing efficiency
AI3+	95-99%	SO2-4	90-99%
Mn2+	95-99%	HPO2-4	90-99%
Ca2+	92-99%	CO2-3	80-95%
Mg2+	92-99%	SiO2-3	75-90%
K+	75-93%	CF-	85-95%
Na+	75-95%	HCO-3	80-95%
NH4+	70-90%	CI-	80-95%
PO3-4	90-99%	NO-3	50-75%

 

 

 

 

Technical index

 

 (1) Input water quality         

  Pollution index FI＜4                   

  Oxygen consumption:＜1.5mg/L                     

  Free chlorine:0.3-1.0mg/L              

 Iron content:＜0.5mg/L                   

PH value:5.5-6.5                       

  Water temperature:20-35℃

                      

(2) Application of water quality

 

treating brackish, surface and ground water for both large and small flows applications. Some examples 

of industries that use RO water include pharmaceutical, boiler feed water, food and beverage, metal 

finishing and semiconductor manufacturing to name a few.

 

(3) Removal ratio for pollutant

Ratio of desalinization:≥97%

Removal ratio for organics:≥95%

Removal ratio for disinfection≥99%

 

 

Operating procedure

 

01. Raw water                                                                                                     

02. Tank for raw water

03. Pump for raw water

04. Mechanical filter

05. Activated carbon filter

06. Water softener

07. Scaling prevent and dosing

08. Ultrafiltration filter

09. High pressure pump

10. Reverse osmosis

11. Tank for pure water

12. Qualified water

 

Detailed Photo: