GN News

Underwater sludge removal has long been recognized as a high-risk operation in the engineering industry. Dark and turbid underwater environments, unpredictable currents, toxic and hazardous gases trapped in accumulated sludge, and confined workspaces mean that every manned dive is a confrontation with risk. Industry data show that the accident rate in underwater sludge removal is far higher than in ordinary construction. Hazards such as oxygen deficiency and asphyxiation, pressure-related injuries, sludge collapse, and exposure to contaminants are ever-present, leaving many construction teams caught in the industry dilemma of “operations require risk, while safety is difficult to guarantee.”

Within global wastewater treatment projects, sludge dewatering constitutes a critical link in the wastewater disposal chain. Overseas wastewater treatment plants face complex working conditions, fluctuating sludge feed concentrations and limited onsite operation and maintenance personnel, which impose stringent requirements on equipment automation, reliability and safety protection.

Across municipal O&M, water conservancy management, and industrial environmental protection, one unavoidable high-risk challenge has persisted—dredging underwater, in manholes, and in enclosed confined spaces.

Urban drainage networks and box culverts accumulate silt over years; river channels and lakebeds develop compacted sediment; industrial sedimentation tanks build up residues; and ditches and covered drains become clogged with debris. Long-term accumulation not only impedes drainage, causes black and odorous water, and obstructs flood conveyance, but also creates major safety hazards.

Recently, a batch of customized electrical control units for shale shakers from GN Smart Control has completed factory commissioning and inspection. The equipment has been shipped in bulk to Kuwait for delivery to local drilling companies at project sites, serving as stable and reliable core electrical control components for drilling solid‑control equipment in Kuwait’s oilfields.

Recently, Hebei GN Bo Chuang Smart Control Technology Co., Ltd. (hereinafter referred to as "GN Smart Control") was officially established. As a newly established subsidiary of GN, the GN Smart Control manufacturing base is located in Dachang, Langfang, Hebei Province, China. The site covers approximately 20,000 m², including about 4,500 m² of office space. Renovation of the workshop is scheduled for completion in early September, after which the facility will be put into operation as a modern integrated base for R&D, manufacturing and testing.

The complete skid‑mounted sludge dewatering package has finished assembly, joint commissioning and factory acceptance test and will soon be shipped to a customer in Europe. This solution consists of **GNDL303 Sludge Dewatering Screw Press** and **GNSJY3000 Chemical Dosing Unit**, with the whole workflow orchestrated by GN’s in‑house developed **GN Smart Control electric control system**, which acts as the intelligent brain for the entire skid‑mounted package GN Solids ....

Against the backdrop of accelerating urbanization and continuous development of water conservancy infrastructure, underwater dredging has become a critical link for safeguarding water environment safety and preserving the performance of hydraulic projects, whose importance has been increasingly prominent.

When urban underground pipe networks struggle under heavy silt buildup, and lakes and rivers are marred by bottom sediments, conventional dredging methods are plagued by low efficiency, high costs and substantial operational risks. Independently developed by GN Smart Control Technology Co., Ltd., the underwater dredging robot reshapes the industry landscape with technological strength and injects “intelligent genes” into underwater environmental remediation. Today, let us dive into the world of these “underwater scavengers” and see how they deliver outstanding performance across diverse scenarios to protect every stretch of clear water.