Reverse Osmosis RO Water System For Brackish Water Processed;

Application of reverse osmosis technologyReverse osmosis technology can be used for brackish water desalination, drinking water production, high-quality drinking water production, industrial low salt content and low hardness production water preparation, industrial pure water and high purity water preparation, industrial wastewater recycling, etc.
The main features of reverse osmosis water treatment are physical desalination, stable effluent quality, continuous production, simple operation, low operating cost, less wastewater discharge, small footprint, and wide range of applicable water quality.

The technical principle of osmosis

When pure water and brine are separated by an ideal semi-permeable membrane, the ideal semi-permeable membrane only allows water to pass through and prevents salt from passing through, at this time the water on the pure water side of the membrane will spontaneously flow into the brine side through the semi-permeable membrane, this phenomenon is called osmosis, if pressure is applied on the brine side of the membrane, then the spontaneous flow of water will be inhibited and slowed down, when the applied pressure reaches a certain value, the net flow of water through the membrane is equal to zero, this pressure is called osmotic pressure, when the pressure applied on the brine side of the membrane is greater than the osmotic pressure, the flow direction of water will be reversed, at this time, The water in the brine will flow into the pure water side, which is the basic principle of reverse osmosis (RO) treatment of water.

Reverse osmosis system composition

The reverse osmosis system is mainly composed of a pretreatment unit, a reverse osmosis unit and an electrical control unit.
Pretreatment generally includes raw water pumps, dosing devices, quartz sand filters, activated carbon filters, precision filters, etc. Its main function is to reduce the pollution index of raw water and other impurities such as residual chlorine, and meet the inlet requirements of reverse osmosis. The equipment configuration of the pretreatment system should be based on the specific conditions of the raw water.
The reverse osmosis unit mainly includes a multi-stage high-pressure pump, a reverse osmosis membrane element, a membrane shell (pressure vessel), a bracket and so on. Its main function is to remove impurities in the water and make the effluent meet the requirements of use.
The electrical control unit is used to control the normal operation of the entire reverse osmosis system water purification machines. Including instrument panels, control panels, various electrical protection, electrical control cabinets, etc.

Functions of each section

1.Raw water pump: provide pressure for quartz sand filter/activated carbon filter.

2.Quartz sand filter: remove turbidity, suspended solids, organic matter, colloids, etc.

3.Activated carbon filter: remove color, free chloride, organic matter, harmful substances, etc.

4.Softener: exchange calcium and magnesium with the most common and easiest method of "ions"

5.Safety filter: prevent large particles, bacteria, and viruses from entering the RO membrane, with an accuracy of 5um.

6. High pressure pump: provide high pressure for RO membrane

7. Reverse osmosis system - the main part of the system. The desalting rate of RO membranes can reach 99%

Flow Chart

1. Raw water tank (optional)
Raw water is stored for the sedimentation of large sediment particles and other precipitable substances in the water. At the same time, it cushions the impact of unstable water pressure in the raw water pipe on the water treatment system. (e.g., the reaction of pressure sensing caused by water pressure that is too low or too high) ro filter system.

2. Raw water pump
Constant system water supply pressure to stabilize water supply water purifier machine.

3. Multi-media filter
The main purpose of the filter is to remove the sediment, rust, colloidal substances, suspended solids and other particles contained in the raw water in more than 20um, and can be controlled by manual valve or fully automatic controller for a series of operations such as backwashing and positive washing. Ensure the quality of the produced water of the equipment and prolong the service life of the equipment ro filter for home.

4. Activated carbon filter
The system uses a shell activated carbon filter, which can not only adsorb electrolyte ions, but also carry out ion exchange adsorption. Activated carbon adsorption can also make potassium permanganate oxygen consumption (COD) from 15mg/L (O2) to 2~7mg/L (O2), in addition, due to the adsorption effect to increase the concentration of surface adsorption and copying, it also plays a catalytic role, remove pigments, odors, a large number of biochemical organic compounds in water, reduce the residual chlorine value of water and pesticide pollutants and remove trihalides (THM) and other pollutants in water. It can be controlled by manual valve or fully automatic controller for a series of operations such as backwashing and positive washing. Ensure the quality of the produced water of the equipment and prolong the service life of the equipment. At the same time, the equipment has a self-maintenance system, and the operating cost is very low.

5. Ion softening system/dosing system
In order to dissolve the concentrated discharge of solids and the utilization of fresh water, in order to prevent the concentration of CaCO3, MgCO3, MgSO4, CaSO4, BaSO4, SrSO4, SiSO4 at the concentration end of the RO device, especially on the concentrated side of the last membrane module of the RO device, from crystallizing and precipitating and damaging the due characteristics of the membrane element, before entering the reverse osmosis membrane module, an ion softening device or an appropriate amount of antiscalant should be put into the assembly to prevent carbonate, SiO2, Crystal precipitation of sulfates.

6. Precision filter
Precision filters are used to remove residual suspended solids, non-contoured particles and colloids in the inlet water, so that the operation of subsequent equipment such as RO system is safer and more reliable. The filter element is a 5um meltblown filter element, which is to remove the impurities greater than 5um that are missed by the upper filter unit. Prevent it from entering the reverse osmosis unit and damaging the surface of the membrane, thereby damaging the desalination performance of the membrane.

7. Reverse osmosis system
The reverse osmosis device uses enough pressure to separate the solvent (generally water) in the solution through the reverse osmosis membrane (or semi-permeable membrane), because this process is in the opposite direction of natural osmosis, so it is called reverse osmosis. The reverse osmosis method can adapt to all kinds of raw water with salt content, especially in water treatment projects with high salt content, and can obtain good technical and economic benefits. The reverse osmosis method has high desalination rate, high recovery rate, stable operation, small footprint, easy operation, reverse osmosis device in desalination at the same time, but also remove most of the bacteria, colloids and large molecular weight organic matter.

8. Ozone sterilizer/ultraviolet sterilizer (optional)
Kill the bacteria produced by secondary pollution and thoroughly ensure the hygiene index of the finished water.

Instructions for Use

1. Raw water quality: local municipal tap water or general groundwater; River water; brackish water, etc

2. Water quality conditions: inlet water quality: conductivity≤3000us/cm; Permeate water quality: conductivity≤100us/cm;

3. Water production: 6000L/h (25°C);

4. It runs 12 hours a day. Operates more than 350 days a year;

5. Power supply: three-phase five-wire system, 220V/380V/50Hz;

6. Rated total power: 11kw;

7. Installation conditions: indoor installation; Ambient temperature: 5-40°C;