Introduction

CPA（Composite Polyamide）Low pressure high desalination reverse osmosis membrane element, it has a very high desalination rate, the removal of silicon dioxide is also quite efficient, the film element has good durability and stable performance.

Feature

1.CPA is a low-pressure, high-salinity, bittersweet and low-salinity desalination film. the material is aromatic polyamide, high water flux and desalination rate were obtained at lower operating pressure, the desalination rate of CAP3-LD membrane element is 99.7%, there are no other brackish water desalination reverse osmosis membrane elements with comparable performance.
2.Membrane components of various specifications can achieve low pressure and high yield of water, It can also meet customers' increasingly strict requirements on water quality，CPA system is your best choice for deep well treatment systems that require high water yield and desalination rates.
3.CPA3-LD adopts 31mil inlet screen which changes shape and size，the operating pressure and pressure loss of CPA3-LD are greatly reduced，at the same time, due to the change of water inlet separation network，the pollution resistance of CPA3-LD membrane components is also greatly improved，therefore, the cleaning frequency of reverse osmosis system is reduced and the service life of membrane element is prolonged.

ApplicationRoutine use of CPA membrane components includes well water, surface water desalination, and drinking water purification, pre-desalination before ion exchange systems, the system of boiler make-up water in power plant and the preparation of super pure water required by semiconductor factory.PROCTM

Model		CPA3-LD	CPA2-4040
type	size	8-inch	4-inch
	membrane material	Aromatic polyamide composite material
	Membrane active area （m2)	37.2	7.9
	Feed spacer mil	31
function	average desalinization rate （%）	99.7	99.5
	Minimum desalinization rate （%）	99.6	99.2
	Water yield （m3/d）	41.6	8.5
Testing conditions	Solution concentration mg/L	1500
	Operating pressure	1.55
	Test temperature （℃）	25
	Single compoment water revovery （%）	15
	Test liquid PH	6.5-7.0
Conditions of use	Maximum operating pressure (MPa)	4.14
	Maximum inlet temperature （m3/h）	17.0	3.6
	Maximum inlet temperature （℃）	45
	Inlet PH range	2-10.8	2-10
	Cleaning PH range	1-12.5	1-12
	Maximum turbidity of water ，NTU	1.0
	Maximum water SDI	<5
	Maximum water residual chlorine concentration (mg/L)	0
	Minimum concentration and yield ratio	5:1
	Single film biggest pressure drop（MPa）	0.07