The process plan for single-stage reverse osmosis equipment is compiled based on the principles of reliable system operation and economic rationality. It adopts relevant design standards and norms, combines our company's many years of engineering experience, and uses groundwater that meets the water quality standards for domestic drinking water as the raw water source.

Our company adopts "pretreatment.+The "single-stage reverse osmosis" water treatment process is rationally designed, operates stably, and the quality of the produced water meets the requirements. It has been applied and tested in many similar projects.

The equipment is easy to install, use, operate and maintain. It operates stably, is energy-saving, environmentally friendly and highly automated.

Ii. Design Basis

1Reverse osmosis system design software;

2Raw water quality: The raw water is groundwater. Conductivity1000-5000us/cm

3User requirement: Water production volume≥1m3/h(25℃) Conductivity≤10us/cm Two-stage reverse osmosis equipment;

4The design and manufacture of control equipment, measuring instruments and electrical equipment comply with relevant regulations and standards.

Iii. Process Description of Single-stage Reverse Osmosis Equipment

4.1Pretreatment: It involves the preliminary treatment of raw water to ensure the water quality meets the requirements, reduce and delay membrane fouling, and extend its service life. The main targets of its treatment are microorganisms, colloids, organic matter, heavy metal ions, solid particles, and free chlorine in the feed water. To meet the feed water requirements of the reverse osmosis device and ensure its long-term stable operation.

It consists of a sand filter, a carbon filter, an automatic water softener and a security filter.

Sand filter: It filters out sediment, impurities, suspended solids in water and reduces the quality of raw waterSDI(Pollution index density)Value.

Carbon filter: It has a dual function. One is adsorption. The second is filtration. Filter out chemical organic matter, heavy metals, color, odor, residual chlorine and other substances in tap water, and improve the taste.

Water softener: Through the exchange treatment of sodium-type cation exchange resin, it removes calcium, magnesium and other scale-forming ions in the raw water and reduces the hardness of the raw water.

Security filter5MicronPPFFilter element, interception greater than5Micrometer-sized objects extend the lifespan of the film.

4.2Reverse osmosis device: The separation pore size of the membrane is10-6cm-10-7cmIt can remove organic matter in water (such as trihalomethane intermediates, colloids, suspended solids, microorganisms, algae, mold, etc.), pyrogens and diseases**The water, after the first three stages of pretreatment of the fluid, undergoes reverse osmosisROAfter deep separation treatment by the membrane host, water beneficial to human health passes through.**The water excretion and desalination rate for human health98%The produced pure water enters the pure water tank. Depending on the specific circumstances, membrane filtration is divided into single-stage or two-stage reverse osmosis treatment. A well-designed system can ensure that the entire system operates3The membrane element does not need to be replaced within the year (the service life is related to the water quality of the water source). The online conductivity display instrument can dynamically show the water quality status of water purification production at any time. High-pressure pump, providing the working pressure for membrane permeation water. Maintain water production rate. It is treated by pressurizing with one or two high-pressure pumps. This water treatment system is a two-stage reverse osmosis system.

4.3Control function description: This system changes the corresponding output signals of the inlet valve, high-pressure pump, flushing valve and other actuating elements according to the changes of input signals such as high pressure, low pressure, liquid level, reset and switch, to achieve automatic control of a standardROThe system achieves high standards/Low-pressure protection, liquid level control, startup/Full of water/It has accumulated functions such as automatic flushing.