0.2MPa- 0.6MPa Water Purification System Quartz Sand Automatic Water Filter Machine

Automatic Water Filtration Syste

Product Overview

The Automatic Water Filtration System is a fully integrated water treatment unit designed for continuous removal of suspended solids, turbidity, and impurities from raw water.
It combines automatic filtration, backwashing, and intelligent control in one compact structure. The system operates automatically according to preset pressure or time parameters, ensuring consistent and high-quality effluent.
This system is widely applied in municipal water treatment, industrial process water, cooling systems, and domestic water purification.

Working Principle

Raw water enters the filtration tank through the inlet and passes through multiple layers of filter media such as quartz sand, anthracite, or activated carbon.
Suspended solids and impurities are trapped in the media bed while clean water flows out from the outlet.
When the pressure differential between the inlet and outlet reaches a set value, or after a preset time interval, the system automatically starts the backwashing cycle, reversing the flow to flush out trapped particles — restoring filtration efficiency.
All operations are controlled automatically via a multiport valve or PLC system.

Main Components

• Filter Tank – Made of carbon steel with epoxy coating, stainless steel (SS304/SS316L), or FRP.

• Automatic Control Valve – Controls filtration, backwash, and rinse cycles automatically.

• Filter Media – Quartz sand, anthracite, activated carbon, manganese sand, or multi-layer combinations.

• Inlet & Outlet Piping System – Stainless steel or PVC material, corrosion-resistant.

• Water Distributor and Collector – Ensures even water flow and prevents media loss.

• Pressure Gauge and Flow Meter – For monitoring system performance.

• PLC Control Cabinet (Optional) – Provides intelligent control, alarms, and remote monitoring.

• Backwash Pump (Optional) – Used to enhance backwash cleaning efficiency.

Features

• Fully automatic operation — no manual supervision required.

• Compact design and easy installation.

• Continuous and stable effluent quality.

• Intelligent pressure or time-based backwash control.

• Durable construction with corrosion-resistant materials.

• Low operation and maintenance cost.

• Modular design for scalable capacity.

Applications

• Municipal and rural water purification systems

• Industrial cooling and circulating water treatment

• Boiler feed water and process water pretreatment

• Food and beverage production lines

• Swimming pools and landscape water

• Reverse osmosis (RO) pretreatment systems

Optional Configurations

• Stainless steel or FRP filter tank

• PLC + touchscreen control cabinet

• Multi-tank parallel design for continuous operation

• Automatic backwash pump group

• Online turbidity and pressure monitoring system

• IoT remote monitoring module

• Multi-media filtration combination (sand + carbon + manganese)

     Jiangsu Sanhe Environmental Protection Group Co., Ltd., formerly Jiangsu Sanhe Environmental Protection Equipment Co., Ltd., is located on the scenic shores of Lake Taihu. It is a renowned manufacturer and developer of modern environmental protection and water treatment equipment in China. It comprises several subsidiaries, including Jiangsu Sanhe Environmental Engineering Co., Ltd. and Yixing Sanhe Environmental Protection Design Institute Co., Ltd. The parent company has a registered capital of 100.2 million yuan, a building area of ​​over 20,000 square meters, and a staff of 52 technicians. The company boasts not only strong environmental protection equipment production and R&D capabilities, but also a highly qualified team with over 30 years of experience in environmental protection equipment production and service, a passion for environmental protection, and a commitment to integrity.

     After nearly 30 years of continuous effort, our innovative development of new products, technologies, materials, and processes, along with our expertise, has been widely adopted in the industry. We have developed advanced continuous-flow activated carbon filters and differential fully automatic backwash filters specifically for reclaimed water reuse and zero-discharge projects. We have also independently developed high-efficiency activated carbon suitable for flow-through activated carbon towers, resolving challenges in China due to poor adsorption performance, short service life, saturation, and high operating costs, hindering widespread adoption and ensuring long-term effective use of activated carbon.

    ​Since its establishment, Jiangsu Sanhe Environmental Protection Group Co., Ltd. has provided qualified products and services to nearly a thousand renowned domestic and international manufacturers, including municipal sewage treatment plants, the machinery and chemical industry, CNPC, Sinopec, Baosteel Group, Jiangxi Copper Group, Dongfeng Nissan, Dongfeng Motor Corporation, commercial passenger vehicle companies, Hangzhou Luxgen, Great Wall Motors, Dongfeng Peugeot Citroen Automobile, Dongfeng Yangzijiang Bus, CSR Corporation, and the Tarim Oilfield, earning a strong reputation. We are grateful to all our friends who have given us opportunities and helped us grow!

     We firmly believe in down-to-earth and steady development; we advocate scientific innovation and unremitting pursuit; and we promote energy-saving, low-carbon, and green living. We provide our customers with ingenious products and services and strive to establish our company as a leading modern enterprise in China's environmental protection production, research, and development sectors.