Jiuwu Hi-Tech Received a Thank-You Letter for Its Municipal Water Treatment Project

The main contents of the Phase I, Stage 1 Water Quality Improvement and Renovation Project of the Pukou Development Zone Wastewater Treatment Plant include: adding an MBBR biomembrane system to the original A2/O water tank, constructing a new denitrification deep-bed filter and an ozone contact oxidation tank; the project has a treatment capacity of 25,000 tons/day, and the first stage was undertaken by Jiuwu Hi-Tech for the upgrading and renovation. After the renovation, the effluent water quality standard has been improved from Class A to Class IV surface water standard. The annual input of NN3-N into the Gaowang River from the wastewater treatment plant reduced by 31.9 tons, and CODCr reduced by 182.5 tons, which helped alleviate the pollution burden on the Gaowang River and improve the compliance rate of national/provincial monitoring sections.

 Following the successful delivery of the first stage, Jiuwu Hi-Tech also participated in the Phase I, Stage 2 construction project of the denitrification deep-bed filter and ozone process package (25,000 tons/day). The project is currently operating stably and has been recognized by the client.

Jiuwu Hi-Tech's Deep Bed Denitrification Filter Technology Advantages

● The deep bed denitrification filter integrates biological denitrification, physical filtration, and micro-flocculation phosphorus removal, simultaneously ensuring stable compliance with TN, SS, and TP standards, with effluent TN ≤ 3–5 mg/L and SS ≤ 5 mg/L. It requires no separate structures, significantly saves land and investment, making it particularly suitable for upgrading wastewater treatment plants.

● The denitrification efficiency of this technology exceeds 90%, and the attached biomembrane in the filter has strong stability. It can still operate stably at low temperatures in winter and can flexibly switch filtration modes according to water quality;

● Outstanding operational economy. Backwash water volume is only 2%–4%, filter media requires no maintenance for its lifetime, carbon source addition is precise and low-consumption, and the high degree of automation simplifies operation and maintenance. The deep bed structure has strong impact resistance, and the modular design adapts to various new and renovation projects.

Core Advantages of Ozone Water Treatment Technology

● Ozone oxidation has strong oxidation abilities and rapid reaction, offering broad-spectrum and efficient sterilization. It can quickly kill bacteria, viruses and other microorganisms, without drug resistance and disinfection dead corners;

● In advanced treatment, ozone efficiently decolorizes and deodorizes, oxidizes and decomposes recalcitrant COD, improves the biodegradability of wastewater, and does not produce disinfection byproducts such as chloroform, resulting in no secondary pollution.

● As a green and clean process, ozone uses air or oxygen as raw material, decomposing to generate oxygen, increasing dissolved oxygen in the water, leaving no residue or sludge, and eliminating the need for subsequent dechlorination.

● The system is compact, occupies a small area, and has a high degree of automation. It can be used independently or in combination with BAF (Body-Based Air Filter), filters, etc., with strong adaptability.

During the construction period, all members of the Jiuwu High-Tech project team faced numerous challenges, including tight schedules, heavy workloads, and complex construction conditions. They remained steadfast on the front lines, dedicating themselves to their work with great enthusiasm. They strictly adhered to engineering specifications and design requirements. By deeply integrating Jiuwu's core advantages in wastewater treatment technology with the actual project conditions, they precisely managed the construction and commissioning details of the denitrification deep bed filter and ozone process package, strictly ensuring project safety, quality, and schedule. They demonstrated outstanding professional competence, efficient execution, and strong teamwork capabilities.