Top 10 Sewage Treatment Machine Suppliers and Manufacturers in China

Founded in 1998, Jiangsu WaterTech isn’t just a manufacturer—it’s a trailblazer in the sewage treatment world. With headquarters in Wuxi, a city known as China’s “Water Town,” the company has deep roots in understanding water’s importance. What sets them apart? Their obsession with water process equipment that doesn’t just treat sewage but reimagines it as a resource.

Jiangsu WaterTech’s portfolio shines with integrated systems that combine wet process and dry process equipment for maximum flexibility. Take their flagship WPT-5000 series: designed for large-scale municipal projects, it uses advanced membrane bioreactors in the wet process to filter out contaminants, then switches to a dry process for sludge treatment, reducing waste by up to 60%. “We don’t just build machines—we build ecosystems,” says Chief Engineer Li Wei, who’s been with the company since its early days. “Our clients in Shanghai and Hangzhou tell us their water reuse rates have jumped from 30% to 85% using our systems. That’s the impact we chase.”

Certified by ISO 9001 and CE, Jiangsu WaterTech exports to 40+ countries, with recent projects in Southeast Asia and Africa. Their commitment to after-sales support—including 24/7 technical hotlines and on-site training—has earned them a 98% customer retention rate. For industries from food processing to textiles, they’re the name that means “peace of mind.”

If there’s one company that understands the unique challenges of industrial sewage, it’s Guangdong Eco Solutions Group. Established in 2005 in Foshan, this family-owned business started small, repairing pumps for local factories, but today, it’s a global leader in effluent treatment machine equipment —the kind that handles the toughest pollutants, from heavy metals to chemical dyes.

What makes Guangdong Eco Solutions stand out? Their focus on customization. “No two factories are the same,” explains CEO Zhang Mei, whose father founded the company. “A textile plant in Dongguan has different needs than a pharmaceutical facility in Suzhou. That’s why we design every system from scratch, combining wet process equipment for deep cleaning with energy-efficient dry process stages to cut costs.” Their ETM-8000 line, for example, uses a patented “biofilm reactor” in the wet process to break down organic matter, then a dry thermal oxidation step to neutralize toxins—all while using 30% less energy than standard models.

With clients like Sinopec and Foxconn, Guangdong Eco Solutions has proven its mettle in high-stakes industries. Their recent project in Vietnam, where they installed a complete effluent treatment line for a electronics factory, reduced wastewater discharge by 92% and earned them a spot on the Vietnamese government’s “Green Partner” list. “We measure success not by sales, but by the rivers we help clean,” Zhang adds with a smile.

When you think of Shanghai, skyscrapers and tech hubs come to mind—but hidden in the city’s industrial outskirts is a gem: Shanghai Purification Equipment Manufacturing Co., Ltd. Since 2001, this company has specialized in wet process equipment that’s tough enough for the most polluting industries, from mining to petrochemicals.

Shanghai Purification’s claim to fame? Their ability to handle heavy metals. “Traditional wet process systems struggle with lead, mercury, and cadmium,” says R&D Director Dr. Chen Hao, a materials science expert. “We developed a nano-ceramic filter that traps these metals at the molecular level, then uses a dry process to recover them for recycling. It’s not just treatment—it’s resource recovery.” Their WPS-7500 system, used by a copper mine in Yunnan, has recovered over 200 tons of copper from wastewater in three years, turning a liability into a profit stream.

But it’s not all about heavy industry. The company also excels in compact water process equipment for small towns and rural areas. Their MiniClean series, a portable wet process unit, can treat 500 cubic meters of sewage per day—perfect for villages without access to large-scale infrastructure. “Clean water shouldn’t be a luxury for cities only,” Dr. Chen insists. With certifications from the China Environmental Protection Agency (CEPA) and exports to 35 countries, Shanghai Purification is walking the talk.

Nestled in Hangzhou’s tech district, Zhejiang GreenTech is proof that sustainability and profitability can go hand in hand. Founded in 2010 by a group of environmental science graduates, this young company has taken the industry by storm with its innovative take on dry process equipment —systems that use minimal water, making them ideal for water-scarce regions.

GreenTech’s secret? A focus on “zero liquid discharge” (ZLD). Their DPT-3000 series uses a combination of evaporation and crystallization in the dry process to remove water from sewage, leaving behind solids that can be safely disposed of or recycled. “In places like Xinjiang or内蒙古 (Nei Mongol), where water is scarce, traditional wet process equipment just isn’t feasible,” explains co-founder Lin Tao. “Our dry process systems use 90% less water than conventional methods, and they’re solar-powered, so operating costs are next to nothing.” A recent project in a textile park in Ningxia saved the facility 1.2 million cubic meters of water last year alone.

But GreenTech hasn’t forgotten about wet process equipment —they’ve just reimagined it. Their HybridClean system combines a compact wet process stage for initial filtration with a dry process for final treatment, offering the best of both worlds for mid-sized factories. “We started this company because we wanted to make a difference, not just money,” Lin says. “Every time a client tells us they’ve reduced their water bill and their carbon footprint, we know we’re on the right track.”

As the capital of China, Beijing is under immense pressure to set an example for environmental responsibility—and Beijing New Environment Technology Co., Ltd. (BNET) has risen to that challenge. Established in 2003, BNET is the go-to supplier for municipal sewage projects, with a portfolio that includes some of the largest water treatment plants in northern China.

What makes BNET a standout? Their mastery of large-scale water process equipment . The company’s BWP-10000 system, installed at Beijing’s Tongzhou Sewage Treatment Plant, handles 500,000 cubic meters of wastewater daily—enough to fill 200 Olympic-sized swimming pools. Using a multi-stage wet process that includes grit removal, aeration, and disinfection, it produces water clean enough for agricultural irrigation and urban green spaces. “We’re not just treating sewage—we’re feeding the city’s parks and farms,” says Project Manager Wang Jun, who oversaw the Tongzhou project.

BNET also shines in smart technology. Their systems come equipped with IoT sensors that monitor water quality in real time, sending alerts to operators if something goes wrong. “In the past, a problem might take hours to detect,” Wang explains. “Now, we can fix it in minutes, preventing pollution before it happens.” With projects in 28 Chinese provinces and partnerships with global giants like Veolia, BNET is proving that big-scale treatment can also be smart and sustainable.

For industries that operate near water—think shipyards, seafood processors, and coastal factories—Shandong Blue Ocean is the name to trust. Based in Qingdao, a port city with a rich maritime history, this 2005-founded company specializes in sewage treatment systems that can handle saltwater intrusion, high organic loads, and the unique challenges of coastal environments.

Blue Ocean’s expertise lies in wet process equipment built for durability. Their MarineClean series, designed for ships and offshore platforms, uses corrosion-resistant materials and compact wet process stages to treat sewage in tight spaces. “A cruise ship can’t afford bulky equipment,” says Sales Director Liu Jia. “Our systems are lightweight, energy-efficient, and tough enough to withstand salt spray and rough seas.” The company’s biggest claim to fame? Equipping over half of China’s coastal fishing vessels with onboard treatment units, helping reduce marine pollution by an estimated 40% in the Bohai Sea.

On land, Blue Ocean’s effluent treatment machine equipment is a hit with seafood processors. Their FPT-2000 system uses a wet process with biological filters to break down fish waste and oils, then a UV disinfection step to ensure the water meets coastal discharge standards. “We grew up by the sea, so we know how important it is to protect it,” Liu adds. “Every machine we build is a promise to keep our oceans blue.”

Not every community or factory needs a multi-million-dollar treatment plant—and Hubei Clean Water Systems gets that. Founded in 2012 in Wuhan, this mid-sized manufacturer has carved a niche in affordable, modular water process equipment designed for small towns, rural areas, and small-to-medium enterprises (SMEs).

Clean Water’s signature product? The MiniMod series—a range of compact, plug-and-play systems that combine wet process and dry process equipment in a single container. “A village with 5,000 people doesn’t need a huge plant,” explains founder Zhou Hong, who grew up in a rural Hubei town without proper sewage treatment. “Our MiniMod-500 can treat 500 cubic meters per day, fits on a truck, and can be installed in 48 hours. It’s like a ‘sewage treatment in a box.’” The system uses a simple wet process for primary treatment, followed by a dry composting step for sludge, turning waste into fertilizer for local farms.

Priced at a fraction of large-scale systems, MiniMod has become a favorite among township governments and SMEs. “We’ve installed over 300 units in Hubei, Hunan, and Sichuan,” Zhou says proudly. “Last year, a village in Enshi told us their river, which used to be black with sewage, is now clear enough for kids to swim in. That’s the reward we work for.”

Innovation is the name of the game at Fujian EcoWater, a 2008-founded company based in Xiamen. With a team of 50+ engineers and a R&D budget that eats up 15% of annual revenue, they’re constantly pushing the boundaries of what water process equipment can do—especially when it comes to energy efficiency.

EcoWater’s latest breakthrough? The EcoCycle-7000, a hybrid system that uses wet process equipment for treatment and generates its own electricity from biogas produced during sludge digestion. “Sewage treatment plants are energy hogs, but they don’t have to be,” says Chief Innovation Officer Dr. Huang Yi. “Our system captures methane from sludge in the wet process, burns it to generate power, and uses that power to run the plant. In some cases, we even have excess electricity to sell back to the grid!” A pilot project at a paper mill in Quanzhou showed the EcoCycle-7000 reduced energy costs by 75% and cut the plant’s carbon footprint by 3,000 tons per year.

But EcoWater isn’t just about high-tech. They also excel in dry process equipment for water-scarce regions, like their SolarDry system, which uses solar panels to power dry process sludge treatment, eliminating the need for fossil fuels. “We believe the future of sewage treatment is green—for the planet and for our clients’ wallets,” Dr. Huang adds.

When disaster strikes—floods, oil spills, or industrial accidents—Sichuan RiverGuard is the first call. Founded in 2015 in Chengdu, this specialized manufacturer builds mobile, emergency sewage treatment systems that can be deployed anywhere, anytime, to contain pollution and protect waterways.

RiverGuard’s flagship product, the RapidResponse-1000, is a truck-mounted unit that combines wet process equipment (like centrifugal separators and chemical dosing systems) with quick-setup dry process filters. “During the 2020 Yangtze floods, we deployed 10 units to treat sewage that had overflowed from treatment plants,” recalls CEO Zhao Wei, a former emergency response worker. “Within 24 hours, we were able to prevent contaminated water from reaching drinking water sources. That’s the power of mobility.”

But RiverGuard isn’t just for emergencies. Their effluent treatment machine equipment is also used by construction sites, mining operations, and disaster relief agencies worldwide. The company’s most recent project? Supplying mobile units to the Red Cross for use in earthquake zones, where clean water is often the first casualty. “We don’t just build machines—we build lifelines,” Zhao says. “Every second counts when water is at risk, and we’re here to make sure no one has to wait.”

Rounding out our list is Anhui PureFlow, a rising star founded in 2014 in Hefei. What makes this young company special? Its focus on sustainability from the ground up—designing water process equipment that’s not just efficient, but also made from recycled materials and built to last.

PureFlow’s GreenBuild series uses 30% recycled steel in its machinery and incorporates modular design, making repairs and upgrades easy (and reducing waste). “Too many treatment machines end up in landfills after a decade because a single part breaks,” explains founder Wu Lin. “We build ours to be repaired, not replaced.” Their wet process filters, for example, use replaceable cartridges instead of entire filter banks, cutting down on replacement costs and waste.

The company’s dry process equipment is also a hit with eco-conscious clients. Their DryCycle system uses waste heat from nearby factories to power sludge drying, turning a byproduct into a resource. “We’re not just treating sewage—we’re rethinking the entire lifecycle of our equipment,” Wu adds. With partnerships with eco-parks in Anhui and Jiangsu, PureFlow is proving that sustainability can start in the factory, too.