I. Fluid Control Product Solutions for the Environmental Protection and Water Treatment Industry

1. Typical Operating Challenges in the Environmental Protection and Water Treatment Industry
Environmental protection and water treatment facilities (including sewage treatment plants, industrial wastewater treatment stations, membrane treatment systems, chemical dosing systems, etc.) often face the following severe challenges in their fluid control systems:

Severe Chemical Corrosion: Treatment media often contain corrosive components such as strong acids (e.g., hydrochloric acid, sulfuric acid), strong alkalis, chloride ions, and sulfides, posing extremely high requirements on the material selection for valves and piping. Corrosion is particularly prominent in process sections like sludge digestion, Fenton oxidation, and electrolytic treatment.

Abrasion and Scaling: Solid particles carried in the fluid (e.g., sediment, suspended solids) can cause severe wear to equipment internals and pipe walls. Simultaneously, biological fouling and inorganic salt scaling can clog valves, affect sealing, and even lead to operational failure.

High Temperature and High Pressure: Certain process segments, such as high-temperature anaerobic digestion, sludge thermal drying, and Reverse Osmosis (RO) systems, need to operate under relatively high temperatures and pressures, requiring equipment materials to possess both good mechanical strength and temperature resistance.

Hygiene and Cleanliness Requirements: In scenarios like membrane treatment, ultrapure water preparation, and water treatment for the food and pharmaceutical industries, fluid contact components must be non-contaminating, non-leaching, with smooth surfaces for easy cleaning, preventing microbial growth and product contamination.

Complex Fluid Characteristics: The treated subjects might be viscous sludge, fibrous wastewater, scaling-prone concentrated brine, or corrosive chemicals, challenging the equipment's clog resistance, flow capacity, and sealing reliability.

Continuous Operation and Reliability: Water treatment facilities typically require 24/7 continuous operation. Failure of any critical valve or pipeline can halt the entire production line, thus demanding extremely high service life and reliability from the equipment.

2. Product Solutions and Effectiveness for the Environmental Protection and Water Treatment Industry
To address the above challenges, our company offers the following fluid control product solutions:

3. Brief Success Case Studies

Case 1: Dosing System Retrofit for an Industrial Park Electroplating Wastewater Treatment Plant

Challenge: The original carbon steel and 304 stainless steel valves and piping suffered severe corrosion when transferring concentrated hydrochloric acid, sulfuric acid, and cyanide-containing wastewater, with a service life of only 3-6 months, frequent leaks, and high maintenance costs.

Solution: Key dosing lines and wastewater transfer lines were replaced with PFA-lined ball valves and diaphragm valves, using PVDF piping and Duplex 2205 flanges for fittings.

Effectiveness: The system has operated continuously and stably for 2 years without corrosion or leaks. Annual maintenance costs were reduced by 70%, avoiding environmental risks associated with leakage.

Case 2: High-Pressure RO System for a Coastal Municipal Sewage Plant

Challenge: The reverse osmosis high-pressure pump outlet pressure was high (≥1.6 MPa), seawater pretreatment water quality fluctuated significantly, chloride ion content was high, and the original valves were at risk of pitting and stress corrosion cracking.

Solution: Key valves and piping in the high-pressure RO unit were upgraded to Duplex Stainless Steel 2205 material, including pressure reducing valves, needle valves, and piping.

Effectiveness: Equipment corrosion and pressure resistance significantly improved, with an expected service life extension to over 10 years, ensuring stable water supply for the potable water reuse system.

II. Application of Industrial Protection Products in the Environmental Protection and Water Treatment Industry

1. Typical Operating Challenges in the Industry
Equipment and facilities in the environmental protection and water treatment industry also face severe external challenges that affect equipment lifespan, operating costs, and safety:

External Corrosion and Environmental Erosion: The humid, chemically-laden atmosphere (e.g., chlorine, ozone, sulfides) inside treatment plants can severely corrode equipment housings, steel structures, pipelines, valves, and flange exteriors. High-salinity air in coastal areas further accelerates metal component corrosion.

Equipment Insulation and Energy Loss: Heat dissipation from the surfaces of equipment like anaerobic digesters, heat exchangers, steam pipes, and hot water lines leads to significant thermal energy loss, increasing operating costs, while high-temperature surfaces pose burn risks to personnel.

Hazards from Dust and Solid Particles: Processes like sludge drying, powder dosing (e.g., lime, powdered activated carbon), and biomass fuel handling generate large amounts of dust, posing both explosion risks and health hazards to personnel, requiring effective collection and treatment.

Equipment Wear and Mechanical Damage: Equipment such as agitators, pumps, and conveying machinery may face wear issues during operation, especially equipment handling wastewater containing solids.

Adhesion and Cleaning Difficulties: Viscous sludge and chemical residues easily adhere to equipment surfaces (e.g., hoppers, chutes), causing cross-contamination, and making cleaning difficult and inefficient.

Difficult and Costly Maintenance: Much equipment is located outdoors or in corrosive environments, making maintenance and replacement difficult and expensive, thus requiring extremely high durability and reliability from protective products.

2. Corresponding Solutions Listed by Product

3. Brief Success Case Studies

Case 1: Dust Removal System in a Sewage Treatment Plant's Sludge Drying Workshop

Challenge: Dust generated after sludge drying was sticky and hygroscopic. Ordinary filter bags were prone to blinding and difficult to clean, leading to reduced system airflow and posing a dust explosion hazard.

Solution: Replaced the filter bags in the drying workshop's dust collector with PTFE membrane filter bags.

Effectiveness: The dust removal system's operating resistance decreased by 30%, cleaning efficiency greatly improved, emission concentration stabilized below 5 mg/m³, and filter bag service life extended to over 3 years, resolving the dust safety hazard.

Case 2: Facility Anti-Corrosion Protection for a Coastal Industrial Wastewater Treatment Plant

Challenge: The plant was located coastal. High-salt, high-humidity air caused severe corrosion on bolts of all outdoor pipeline flanges. Disassembly during maintenance was extremely difficult, often requiring gas cutting, which was time-consuming and labor-intensive.

Solution: Installed PTFE flange protection covers on over 500 outdoor flanges throughout the plant.

Effectiveness: During an inspection two years later, bolts under the covers were as good as new and could be directly disassembled with tools. Average single maintenance time was reduced by 70%, significantly lowering maintenance intensity and costs.

Summary
Leveraging our profound expertise in special materials and precision manufacturing, we can provide the environmental protection and water treatment industry with one-stop, full-lifecycle solutions ranging from core process fluid control to peripheral equipment protection. Our comprehensive product line covers various complex operating conditions from municipal sewage and industrial wastewater to high-purity water treatment, aiming to help customers address challenges like corrosion, wear, scaling, and high temperatures. We strive to ensure facility stable operation, improve treatment efficiency, reduce overall costs, and meet increasingly stringent environmental and safety requirements.

We hope this proposal provides a clear reference. If you have needs in specific segments (such as electroplating wastewater, landfill leachate, PV/semiconductor ultrapure water, etc.), we can offer more targeted product selection and solutions.