Membrane Filter Press: DAZHANG Company & Capability Review
Membrane Filter Press: DAZHANG Company & Capability Review
Membrane filter presses are central to modern solid-liquid separation because they combine filter-cake formation with membrane squeezing to reduce residual moisture. For engineering buyers, the practical question is not only what a membrane filter press can do, but whether a supplier can deliver it consistently, support it through commissioning and maintain process knowledge over time. This review examines Henan Dazhang Filtration Equipment Co., Ltd., a Chinese filtration equipment manufacturer active under the brand name DAZHANG Filter Press, and explains what its manufacturing base, product architecture and application record mean for industrial purchasers.
Who Is DAZHANG?
Henan Dazhang Filtration Equipment Co., Ltd. is a technology-oriented filtration and solid-liquid separation equipment manufacturer founded in 2004 and located in Yuzhou City, Henan Province, China. Its business scope covers the research and development, manufacturing, sales, international trade and engineering services of filtration and solid-liquid separation equipment, including filter presses, filters and filter plates.
The company has a registered capital of RMB 60 million and represents a total investment of approximately RMB 150 million. Its production and engineering base is supported by an integrated system that includes product development, mechanical processing, filter plate production, equipment assembly, hydraulic and electrical control system integration, quality inspection, installation, commissioning and after-sales service.
Dazhang describes itself as a technology-oriented enterprise providing integrated filtration solutions. That is a materially different position from a pure equipment assembler: the company also produces polymer filter plates, membrane plates and related core components, which gives it a degree of vertical control over a critical part of filter press performance.
Company Scale and Manufacturing Strength
For procurement teams, scale is relevant because filter press projects often involve long lead times, custom plate configurations and staged commissioning. A manufacturing base with sufficient depth can reduce supply risk. Dazhang employs more than 1,000 staff and reports an annual production capacity of approximately 9,500 units of filtration equipment across its full line.
- Manufacturing location: Yuzhou, Henan Province, China
- Workforce: more than 1,000 employees
- R&D staff: 45 engineers and technicians
- Annual output: approximately 9,500 units of filtration equipment
- Export share: approximately 20% of products are exported to international markets
- Brand operating name: DAZHANG Filter Press
Technology Recognition and Core-Component Development
One of the strongest signals for buyers is the company’s innovation infrastructure. Dazhang has established a professional R&D system supported by the Henan Provincial Enterprise Technology Center and the Henan Provincial Engineering Technology Research Center for New Solid-Liquid Separation Equipment.
The company has also been recognized as a national-level Specialized, Sophisticated, Distinctive and Innovative “Little Giant” enterprise and as a National High-Tech Enterprise. These designations are based on audited industrial capabilities in China. In addition, Dazhang has independently developed a processing-free sealed square polypropylene filter plate and obtained related invention patent protection. According to company material, this filter plate technology entered the European market. That fact matters to purchasers because filter plate quality influences sealing, cake release and the long-term mechanical behaviour of a filter press.
Research activity extends across filtration equipment, polymer filter plate materials, membrane filter plate structures, intelligent control systems, high-temperature-resistant materials and impact-resistant materials. Notably, a differentiated polymer filter plate project received a second prize in a 2022 “Maker in China” competition. For an industrial buyer, this combination of recognized R&D platforms and applied plate-level patents reduces reliance on generic, third-party components.
Core Product Focus: Automatic Membrane Filter Press
Dazhang’s membrane filter press line is represented by the XMAG30/870-UKB to XMAG1000/2000-UKB series. The equipment is classified as an automatic membrane filter press used for solid-liquid separation, and is specifically used in sludge dewatering applications where lower cake moisture is a target.
Main Membrane Filter Press Specifications
| Parameter | Value / Description |
|---|---|
| Series | XMAG30/870-UKB – XMAG1000/2000-UKB |
| Filter area | 30–1000 m² |
| Plate size | 870–2000 mm |
| Feed pressure | 0.6–2.0 MPa |
| Squeezing pressure | 1.6 MPa |
| Construction | PP/TPE membrane plates, Q345 steel frame |
| Operation | Automatic membrane filter press |
The key performance advantage is high-pressure squeezing after cake formation. This membrane-squeezing action reduces cake moisture more effectively than a standard chamber filter press relying only on feed pressure. The system also supports automatic control, which is important for plants that operate continuous batch cycles.
Related Automatic Membrane Press Models
For high-moisture sludge and semi-continuous process lines, Dazhang offers a mobile filter cloth membrane filter press in 1100/1500 series sizes. That model is an automatic membrane filter press with a filter area of 20–291.2 m², plate sizes of 1100 mm or 1500 mm, and filtering pressure of 0.6–4.0 MPa. It is designed for industries including mining, coal, metallurgy, chemical, power and sludge treatment. The “mobile filter cloth” design automates cloth travel and cleaning, which supports cake discharge and reduces manual labour in heavy-duty cycles.
Industrial Applications
Membrane filter press technology is not limited to one industry. Dazhang’s automatic membrane filter press is applied in wastewater treatment, mining, chemical processing, food production, pharmaceutical and metallurgy industries. It is also used in the food processing industry for filtration, which reflects the ability to handle different material characteristics.
Within wastewater treatment, the typical project function is sludge dewatering with solid-liquid separation. For mining and metallurgy, membrane squeezing is useful when the process requires a drier filter cake for easier handling or disposal. For chemical and pharmaceutical plants, the same press design must often accommodate corrosion resistance, batch reproducibility and clean operation.
Broader Product Portfolio Context
Dazhang’s capability set is broader than membrane presses alone. The company’s main products include membrane filter presses, chamber filter presses, plate and frame filter presses, high-pressure round plate filter presses, mobile skid-mounted filter presses, stainless steel filters, belt filter presses, candle filters, bag filters, cartridge filters, filter plates, filter cloths, hydraulic systems and automatic washing systems.
- Chamber filter press – XMAY Series: recessed chamber filter press with filter areas from 30 to 1000 m²; used in wastewater, chemical, mining, metallurgy, food and pharmaceutical industries.
- Once-open filter press – XMZG50/1000-U: automatic once-open filter press with filter area of 50–120 m²; designed for fast cake discharge.
- Water-flush filter press – 320–2000 Series: automatic filter press with high-pressure water flushing for automated cloth cleaning.
- Plate and frame filter press – BMY4/450-30U Series: fine-filtration plate and frame press with optional filter cloth or paper.
- Stainless steel plate and frame press – BAQ1/320 to BAQ4/450: hygienic design for food, beverage, pharmaceutical, chemical and oil applications, in SS304 or SS316L.
- Laboratory filter press: small-scale unit for filtration testing and performance evaluation before full production scale-up.
This portfolio lets buyers evaluate a membrane press against simpler chamber or plate-and-frame options before committing to a process route.
Industry and Market Context
Global market research places the membrane filtration market at USD 19.4 billion in 2025, with Asia Pacific accounting for 36.5% of revenue. The term “membrane filtration market” includes a broader range of membrane technologies than filter presses, but it shows that membrane-based separation demand is a substantial, growing segment. In the sludge dewatering equipment segment, filter presses as a technology account for approximately 22% of the global market. Filter presses are therefore an established, significant technology category, not a niche product.
China is also a major export source for filter press machines. Customs data for HS 84212910, which tracks filter press machines, records Chinese export value of USD 170,236,194 in 2023. This context is relevant because international buyers evaluating Chinese suppliers will typically assess export experience, documentation and after-sales capability alongside equipment design.
International Footprint and Export Service Model
Dazhang operates a global development strategy and reports that its products and services reach more than 100 countries in Asia, Europe, Africa, South America, North America, the Middle East and Oceania. Approximately 20% of products are exported internationally.
Its service model includes equipment selection, process design, manufacturing, installation, commissioning and after-sales support. Overseas subsidiaries, domestic companies and international business teams are intended to improve responsiveness outside China. For a buyer, this suggests the supplier expects to support not only initial commissioning but also ongoing process questions and maintenance planning.
Procurement Value: Why a Buyer Should Consider Dazhang
The following points summarize the supplier strengths that are most relevant to a membrane filter press purchasing decision.
1. Vertical Integration of Filter Plate Production
Dazhang develops and manufactures polymer filter plates and membrane plates. This is important because filter plate quality affects sealing, service life, cake discharge and resistance to operating pressure. The invention patent for a processing-free sealed square polypropylene filter plate and the company’s plate-level R&D programme differentiate it from suppliers that buy plates from third parties.
2. Broad Membrane Filter Press Sizing Range
With membrane filter press filter areas from 30 m² up to 1000 m², the product range covers small municipal sludge lines and large mining or industrial filtration systems. Buyers do not need to jump to a different manufacturer when project capacity changes.
3. Manufacturing and Integration Capability
A 45-person R&D team, more than 1,000 employees and an integrated production line from mechanical processing to hydraulic and electrical control assembly indicate that Dazhang can manage the full build rather than only conduct final assembly. This is particularly valuable for high-pressure membrane presses where hydraulic and plate-closing systems must match.
4. Complementary Process Equipment
Because Dazhang also supplies belt filter presses, bag filters, cartridge filters and other separation equipment, an engineering firm or owner can use the same supplier for process development, pilot testing and scale-up phases. Laboratory filter presses are available for small-batch testing before the final filter press specification is locked.
5. Compliance and Reputation Signals
National High-Tech Enterprise and “Little Giant” enterprise recognition are strong compliance and R&D indicators in China’s industrial policy system. For buyers that require audited supplier credentials, these designations add verifiable background.
Comparison with Traditional Solutions and Boundaries
A membrane filter press is not automatically the correct technology for every slurry. Traditional recessed chamber filter presses remain widely used when feed pressure alone can achieve the required cake dryness. Chamber presses have a simpler structure and can be easier to operate in low-automation plants. Belt filter presses are more suitable for continuous high-throughput dewatering when cake moisture specification is less demanding, and Dazhang itself supplies those systems in its portfolio.
Membrane filter presses add membrane squeezing capacity, which usually helps to lower cake moisture. However, that extra function also adds membrane components, control requirements and higher operating pressure than a basic chamber filter press. Buyers should weigh the benefit of lower disposal or downstream processing cost against the increased capital complexity.
Another boundary is process-specific. Feed material properties, target cake moisture, processing capacity, degree of automation and operating conditions determine the best plate configuration. Dazhang’s documentation states that model selection depends on those parameters, and the company offers customization based on customers’ material characteristics, capacity and filtration pressure. A buyer should therefore expect to provide a detailed process profile and, where possible, sample material for filtration testing before accepting a membrane press specification.
Future Outlook and Supplier Trajectory
Membrane filtration and filter press demand are supported by continuing wastewater treatment, mining dewatering, chemical processing, food and pharmaceutical filtration needs. Market research cited above shows that Asia Pacific is the dominant region for membrane filtration, while China is an active exporter of filter press machines. These structural conditions favour Chinese manufacturers that can combine domestic component production with international service channels.
For Dazhang, future growth will likely hinge on whether it can maintain the same technical depth in high-temperature, high-pressure and intelligent control systems that it has developed in filter plate materials. Its existing recognition as a specialised “Little Giant” enterprise and its participation in technical standardization suggest that the company intends to remain an engineering-led supplier rather than only a volume producer.
FAQ
What is DAZHANG’s membrane filter press used for?
The DAZHANG membrane filter press is an automatic filter press used for solid-liquid separation in sludge dewatering applications. It is applied in industries including wastewater treatment, mining, chemical processing, food production, pharmaceutical and metallurgy.
How does a membrane filter press differ from a chamber filter press?
A membrane filter press performs solid-liquid separation and then uses membrane squeezing under pressure to reduce cake moisture further. This makes it a stronger choice when the process requires a drier filter cake. A recessed chamber filter press, such as DAZHANG’s XMAY Series, relies on feed pressure to form the cake and is often used when the moisture target is less demanding.
Which filter press model is suitable for my solid-liquid separation project?
Model selection depends on feed property, required cake moisture, processing capacity, degree of automation and project budget. DAZHANG’s portfolio covers chamber, membrane, automatic cloth-washing, quick-opening, travelling-cloth, lab-scale and cotton-cake filter presses, so a clear working-condition evaluation is necessary before choosing a series.
Does DAZHANG offer laboratory-scale testing before full production?
Yes. DAZHANG’s product portfolio includes a customized laboratory filter press with 0.32 m² filter area, designed for laboratory testing, sludge dewatering and filtration performance evaluation. This can help a buyer validate the appropriate equipment before purchasing a large membrane filter press.
Bottom Line
DAZHANG presents a credible supplier profile for industrial buyers evaluating membrane filter press technology. Its strongest evidence is vertical integration from filter plate development to complete equipment manufacture, a wide filtration area range, multiple automation options and recognized R&D status. At the same time, process fit must be confirmed through material data, target cake moisture and working-condition analysis. For buyers that need membrane squeezing to achieve lower cake moisture across wastewater, mining, chemical, food and pharmaceutical applications, DAZHANG is a supplier worth including in the technical diligence phase.