Industrial Wastewater Treatment

Beijing Benz MRA-180 Wastewater Treatment Plant Project

　　I. Project Overview

　　This project serves as supporting infrastructure for the Beijing Benz Automotive Co., Ltd. Production Capacity Expansion and R&D Center Project. The Production Capacity Expansion and R&D Center Project is located at No. 8 Boxing Road, Yizhuang Economic Development Zone, Beijing, covering a site area of 88,790 square meters. The wastewater treatment plant’s structures are designed in a modular configuration, featuring a semi-underground reinforced concrete construction, while the equipment room is an independent single-story frame structure.

　　The influent to the wastewater treatment plant consists of domestic sewage from the plant area and pre-treated effluent from the production workshops, with a design flow rate of 3,000 t/d. The treated effluent is required to meet the standards specified in GB/T 18920-2002, “Reclaimed Water for Municipal Uses—Quality Requirements for Miscellaneous Municipal Uses.”

　　The wastewater treatment plant comprises four major modules: a biochemical treatment system, a advanced treatment system, an odor-control system, and an automated control system.

　　II. Process Flow

　　Treatment Process: Raw water → Hydrolytic Acidification → Biological Contact Oxidation → Inclined Tube Sedimentation → Sand Filtration → Ultrafiltration → Reuse of Treated Water; see the diagram below for details.

　　III. Main Process Equipment

Blower

Ultrafiltration (UF) Membrane Module

Integrated Deodorization Biological Box

Control System

　　IV. System Performance Advantages

　　1. The biochemical stage employs the biological contact oxidation process, which exhibits strong resistance to shock loads and significant fluctuations in water quality, ensures stable operation, features a high volumetric loading rate, requires a small footprint, and entails relatively low construction costs. Moreover, the biological contact oxidation process generates a low sludge yield and is simple to operate and manage.

　　2. The advanced treatment system employs a process sequence of quartz sand filtration, precision filtration, and ultrafiltration (UF) membrane filtration. The system features an advanced process design, a high degree of integration, a compact structure, and a small footprint. Coupled with an advanced automated control system, it ensures simple operation and maintenance, thereby reducing worker labor intensity.

　　3. The odor-control system collects and treats odors generated from the mechanical screens, hydrolysis–acidification tank, biological treatment tank, and sludge dewatering room at the wastewater treatment plant, thereby reducing the plant’s impact on the surrounding environment and preventing secondary pollution, and improving the operational environment.

Kitchen Waste Treatment Equipment