Xi'an DIEN Water Treatment Builds On-site Integrated Wastewater Treatment for China State Construction | Standard Discharge & Reuse for Green Construction
Against the backdrop of increasingly stringent green construction and environmental supervision in engineering projects, standardized treatment and resource reuse of construction site Wastewater have become mandatory management requirements for central state-owned enterprises. With mature construction Wastewater treatment technology, rapid deployment capability and full-cycle implementation services, Xi'an DIEN Water Treatment has successfully provided integrated Wastewater treatment solutions for key projects under China State Construction. It efficiently solves the difficulties in construction wastewater and domestic Wastewater treatment, realizes standard discharge, clean water reuse, cost reduction and efficiency improvement, and helps China State Construction set a benchmark for green and civilized construction sites.
I. Project Overview
The project is fully undertaken by Xi'an DIEN Water Treatment with one-stop services including solution design, equipment manufacturing, installation & commissioning, and operation & maintenance guidance, serving key construction projects in the northwest region of China State Construction. Targeting the characteristics of mixed discharge of construction wastewater and domestic Wastewater, dramatic water quality fluctuation, limited land occupation and tight construction schedule, the project adopts integrated equipment combined with physical-chemical and biochemical combined processes to quickly build a movable, easy-to-install and fully automatic Wastewater treatment system, meeting the full-cycle Wastewater treatment demands during the construction period. After commissioning, the system operates stably with effluent reaching standards and partial water reuse, gaining unanimous recognition from the developer and environmental protection authorities.
II. Raw Water Quality Problems
According to on-site investigation and water sample testing, the main Wastewater problems at the site are as follows:
Severely excessive Suspended Solids (SS): Construction mud, dust and muck lead to high Wastewater turbidity, easily blocking pipelines and equipment.
High organics and ammonia nitrogen: Domestic Wastewater in living areas exceeds the standard in COD, BOD and ammonia nitrogen, failing to meet discharge regulations.
Oil content and complex impurities: Oil pollution generated by mechanical maintenance and vehicle washing, mixed with garbage debris, causing dramatic water quality fluctuation.
Unregulated collection and treatment: Scattered discharge easily causes site water accumulation and peculiar odor, failing to pass environmental inspections.
The above problems directly affect civilized construction, environmental compliance and project image, requiring a professional Wastewater treatment system for rapid resolution.
III. Customer Requirements & Treatment Targets
Combined with the green construction and environmental management requirements of China State Construction, the core project requirements are defined as follows:
Effluent shall comply with GB 8978 Comprehensive Wastewater Discharge Standard and local pipeline discharge requirements to ensure passing environmental acceptance.
The system features small footprint, rapid installation and convenient movement, adapting to temporary land use and tight construction schedules.
Realize Wastewater resource reuse; treated clean water can be used for site dust suppression, vehicle washing and greening irrigation to reduce water costs.
Fully automatic equipment operation with simple operation and low maintenance, adapting to on-site construction management conditions.
Stable operation and strong impact load resistance, maintaining stable standards amid fluctuating water quantity and quality.
Treatment Targets: Key indicators such as SS, COD, ammonia nitrogen and animal & vegetable oil steadily meet standards, with a reuse rate ≥ 30%.

Xi'an DIEN Water Treatment Builds Construction Site Wastewater Treatment for China State Construction
IV. Xi'an DIEN Customized Solution
Targeting the Wastewater characteristics and on-site conditions of construction sites, Xi'an DIEN adopts a closed-loop process of Pretreatment + Biochemical Treatment + Advanced Purification to customize the integrated Wastewater treatment solution:
Grating + Regulation Tank: Intercept floating debris, balance water quality and quantity, and improve system impact resistance.
Coagulation & Sedimentation: Add high-efficiency flocculants to rapidly remove suspended solids, colloids and partial organics, reducing turbidity.
Biochemical Treatment Unit: Adopt A/O biological contact oxidation process to efficiently degrade COD, BOD and ammonia nitrogen.
Advanced Filtration + Disinfection: Quartz sand filtration + UV disinfection to ensure clear and sterile effluent, meeting reuse and discharge requirements.
Integrated Equipment: Skid-mounted / Buried Integrated Wastewater Treatment Equipment (Click for Details), featuring small footprint, fast installation and short construction period, ready for operation within one week after site entry.
Intelligent Control System: PLC full automatic operation with automatic sludge discharge, automatic dosing and fault alarm, requiring no full-time duty personnel.
V. Project Treatment Effect
After official operation, continuous monitoring and third-party testing show remarkable treatment results:
Stable Standard Effluent: SS, COD, ammonia nitrogen, animal and vegetable oil all comply with discharge standards, smoothly passing environmental inspections.
Resource Reuse: Treated clean water is used for dust suppression, vehicle washing and greening, saving over 10,000 tons of fresh water annually and cutting project water costs.
Improved Civilized Construction: No overflowing Wastewater or disturbing odor, keeping the site clean and up to green construction site standards.
Efficient & Worry-free: Fully automatic equipment operation with simple maintenance and low failure rate, suitable for long-term on-site use.
Rapid Implementation: Short cycle from design to commissioning, without affecting the main construction progress.
VI. Customer Feedback
The project person in charge of China State Construction spoke highly of Xi'an DIEN Water Treatment: DIEN's solution is highly targeted, fast to implement and stable in effect, completely relieving the pressure of construction Wastewater discharge and environmental supervision. The equipment is easy to operate with low operation and maintenance costs, and realizes clean water reuse, truly achieving green construction, cost reduction and efficiency improvement. The DIEN team responds promptly and provides professional services, making it a trustworthy water treatment partner for construction projects.
Xi'an DIEN Water Treatment specializes in one-stop solutions such as construction site Wastewater treatment, construction wastewater reuse, integrated Wastewater equipment and domestic Wastewater treatment, serving customers in construction, municipal, factory, scenic spot and other scenarios. With core advantages of rapid deployment, stable standard discharge, high cost performance and comprehensive after-sales service, it has become the preferred water treatment brand in northwest engineering construction. If your project faces problems such as substandard Wastewater, environmental inspections, limited land occupation and water reuse demands, welcome to contact Xi'an DIEN Water Treatment for free site survey, customized solutions and quick quotations. We support green construction and environmental compliance with professional solutions.