Water treatment specialists
Equipment Manufacturing & Services

Shandong Zhongnan Environmental Protection Equipment Co., Ltd. is based in Weifang, adjacent to the industrial clusters of Qingdao and Rizhao. We provide wastewater treatment equipment and comprehensive solutions for government agencies, enterprises, engineering projects, and industrial mines.

Company Profile

From craftsmanship to equipment, accountable for results.

Shandong Zhongnan Environmental Protection Equipment Co., Ltd. is a trusted full-chain integrated service provider specializing in water treatment. Headquartered in Weifang, strategically located near the industrial hubs of Qingdao and Rizhao.

With years of expertise in the environmental water treatment industry, we specialize in the R&D and manufacturing of diverse eco-friendly equipment. We deliver efficient, reliable, and cost-effective wastewater treatment solutions tailored for government agencies, enterprises, engineering firms, and industrial operations.

Our company's projects span across the country, with equipment widely deployed in residential communities, healthcare facilities, livestock farming and slaughterhouses, food processing, chemical manufacturing, laundry services, pharmaceutical production, and many other industries. The systems consistently meet performance standards and operate reliably. Thanks to our practical solutions and dependable products, we have earned a strong reputation in the market.

10+: Years of industry expertise
12 styles: Active Devices
7×24: Service Response
AAA: Credit Score

Zhongnan Environmental Protection Plant and Production Workshop

Core Competencies

Four Core Strengths

From solution to equipment to on-site service, reduce the cost of coordinating across multiple vendors.

End-to-end one-stop service

Covers the entire process from process planning and custom equipment manufacturing to on-site engineering installation and post-operation maintenance, delivering comprehensive turnkey solutions that streamline collaboration and reduce overall investment costs.

Proven Craftsmanship, Strict Quality Control

Our team integrates expertise in water treatment design, automation control, and environmental process R&D to deliver practical, implementable solutions. We enforce standardized production controls and conduct multi-stage equipment inspections prior to shipment, ensuring long-term stable operation.

Customized on demand, optimized for fit

Ditch one-size-fits-all solutions. Tailor processes and equipment to your specific water quality, flow rates, site conditions, and discharge standards—balancing operational energy efficiency with cost-effectiveness.

Comprehensive, personalized support throughout the entire journey

Pre-sales: Free technical integration and solution planning. In-sales: End-to-end support for production, installation, and commissioning. Post-sales: Rapid response to inquiries and technical guidance. Full-lifecycle assurance for smooth project operations.

Technical Approach

How to define the solution and verify the equipment?

We break each project into four phases, leaving verifiable parameters and records at every step for joint review by the client, design team, and operations team.

01
On-site condition data acquisition
Record fluctuations in water volume, concentrations of major pollutants, discharge destinations, and site elevation to establish a selection parameter table.
02
Process Scheme and Equipment Selection
Combine pretreatment, biochemical, and advanced treatment units based on pollutant type; specify volumetric loading rate, hydraulic retention time, and chemical dosing amount.
03
Pre-fabrication and Factory Water Testing
The tank assembly, piping, and electrical control wiring are completed in the factory. Before shipment, a power-on water test is conducted to check for leaks, verify liquid levels, and confirm interlock functionality.
04
Installation, Commissioning, and Handover
On-site takeover, inoculation and acclimatization of activated sludge, parameter adjustment based on effluent test results, and delivery of operation and maintenance guidelines.

Standards and Specifications Referenced in Plan Development

GB 18918-2002 "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants"
GB 8978-1996 "Comprehensive Emission Standards for Sewage"
GB/T 31962-2015 "Water Quality Standards for Sewage Discharged into Urban Sewer Systems"
GB 50014-2021 "Standard for Design of Outdoor Drainage"
HJ 2010-2011 "Technical Specification for Membrane Bioreactor Sewage Treatment Engineering"

The above serves as a common reference for proposal development. Specific project execution standards shall be governed by environmental impact assessment approvals, discharge permits, and contractual agreements. Effluent quality targets must be verified against actual water quality measurements; directly applying parameters from other projects is not recommended.