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Upgrading and retrofitting urban wastewater treatment is accelerating, leading to a concentrated surge in demand for high-efficiency phosphorus-removal agents.
Mar 27,2026
As national requirements for water-environment governance continue to tighten, the upgrading and retrofitting of urban wastewater treatment plants to higher standards has entered an accelerated phase. Many local governments have introduced stricter regional standards than the national benchmarks, with some key areas even mandating that effluent from wastewater treatment plants meet Class IV or Class III surface-water quality standards, thereby driving the transition from conventional activated-sludge processes to advanced treatment technologies such as MBR membrane bioreactors and denitrifying deep-bed filters. In this context, chemical phosphorus removal has become a critical step: biological phosphorus removal is highly sensitive to fluctuations in influent water quality and often struggles to consistently meet the stringent requirement of total phosphorus ≤ 0.3 mg/L, whereas high-efficiency phosphorus-removal agents achieve efficient total-phosphorus removal by forming insoluble precipitates with phosphate ions.
Market demand is undergoing structural changes: municipal wastewater treatment continues to dominate, accounting for approximately 63% of the market size in 2025; however, demand for industrial wastewater treatment is rising rapidly, with the treatment of high-phosphorus wastewater in sectors such as photovoltaics, new-energy batteries, and livestock and poultry farming emerging as new growth drivers. Accelerated technological iteration is driving product upgrades, with novel phosphorus-removal agents—such as modified lanthanide-based adsorbents and nano-scale polyferric sulfate—gaining market share by virtue of their low dosing requirements, minimal sludge production, and non-inhibitory effects on microorganisms, resulting in an 11.2-percentage-point increase compared with 2023. According to industry reports, China’s phosphorus-removal water-treatment-agent market is projected to reach RMB 4.87 billion in 2025 and could surpass RMB 5.1 billion in 2026 as standards-improvement projects continue to advance, thereby establishing a stable market structure driven by technological innovation and fueled by dual growth from both municipal and industrial demand.
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