1. Project Introduction

At present, the discharged water quality of urban sewage treatment plants implementing Level 1 A standards is close to that of surface Class V water, which is one of the reasons for the failure to improve the quality of natural water bodies and the deterioration of water quality. The implementation of more stringent ultra-low phosphorus emission standards (≤ 0.05 mg/L) can provide high-quality supplementary water sources for receiving water bodies and is of great significance to restoring and improving the water environment. Sewage treatment plants around water bodies such as the Yangtze River Basin, Taihu Lake Basin, and Chaohu Basin all need to increase total phosphorus emission standards. Limited by unfavorable conditions such as the lack of space for upgrading and renovating existing sewage plants, based on the principle of chemical phosphorus removal, MWDAF Micro-nano efficient air flotation can provide a solution with small footprint, good treatment effect, and economical and precise control characteristics. Under the premise that the total phosphorus in the inlet is ≤ 1.0 mg/L, the total phosphorus in the outlet is stable at ≤ 0.05 mg/L, and the operating cost per ton of water is ≤ 0.1 yuan. The application prospects are broad.

2. Cooperation content

(1) Brief introduction of the main related technologies involved

MWDAF micro-nano high-efficiency air flotation consists of a unique coil mixing area, micro-nano bubble generator (particle size is only 30 - 50 μ m), high-efficiency precipitation area, intelligent dosing system, etc. It has reasonable structure, stable operation, and good treatment effect., high efficiency, energy saving, small floor area and other advantages. SS removal rate ≥ 90%; surface load ≥ 20 m³/(㎡. h); The front-feedback intelligent agent dosing system can monitor the changes in phosphate concentration and flow rate in the treatment process of the sewage treatment plant in real time, so as to control the automatic dosing amount of chemical phosphorus removal agents through calculation, so that the effluent phosphorus can be stabilized. Meet the standards, and at the same time reduce the waste of phosphorus removal agent dosing, thereby achieving energy conservation and consumption reduction.

(2) Proposed cooperation areas and partners

There is no limit to the cooperation area, and there is a need for total phosphorus removal and standard improvement in municipal sewage (and/or industrial wastewater). We hope to seek partners with rich engineering experience, strong industrialization transformation capabilities, and high targeted market share.

(3) Proposed cooperation model

Equipment process package sales, transformation + operation, general engineering contracting and other models can be used.

3. Cooperation cases

This project will be completed in 2020 at Zhuzhuanjing Sewage Treatment Plant and Feidong Sewage Treatment Plant in Hefei City.

IV. Environmental impact assessment

At present, the discharged water quality of urban sewage treatment plants implementing Level 1 A standards is close to that of surface Class V water, which is one of the reasons for the failure to improve the quality of natural water bodies and the deterioration of water quality. The implementation of more stringent ultra-low phosphorus emission standards (≤ 0.05 mg/L) can provide high-quality supplementary water sources for receiving water bodies and is of great significance to restoring and improving the water environment. Sewage treatment plants around water bodies such as the Yangtze River Basin, Taihu Lake Basin, and Chaohu Lake Basin all need to increase the total phosphorus emission standards. Due to unfavorable conditions such as lack of space for upgrading and renovating existing sewage plants, this project can provide a solution with small land area, low energy consumption, and good treatment effect has broad application prospects.