On July 30, 2021, Huangshi City Public Resources Trading Center issued an announcement on the prequalification of the Yangxin County Yangtze River Protection Water Environment Comprehensive Treatment PPP Project (Phase I Project), the purchaser was Yangxin County Housing and Urban-Rural Construction Bureau, the total project investment is about 2.4 billion Yuan.

Project Overview

This project includes four types of projects: pipe network engineering, river and lake engineering, sewage treatment engineering, and water supply engineering, with a total of 11 sub-items. Among them, 2 pipe network projects and 4 river and lake projects are new projects; 4 sewage treatment projects and 1 water supply project are existing projects. The cooperation period of this project is 30 years.

Pipeline Engineering

The quality and efficiency improvement of the pipeline network in the east and the old city and the pipeline network renovation project mainly include the following parts: Chengdong District ①The current drainage pipeline in the east district is designed to detect, check and remediate the pipeline. The total length of the pipeline is about 135 kilometers. The rainwater pipe is about 85 kilometers, the sewage pipe is about 50 kilometers, and the reconstruction area is about 8.5 square kilometers. ②The smart water affairs transformation of Chengdong District will mainly carry out flow monitoring, water quality monitoring and video detection of key nodes in the pipeline network, and build a monitoring center for remote monitoring and data collection management.

The old city area ① The pipelines in the high-risk areas and medium-risk areas of waterlogging mentioned in the "Special Plan for the Reconstruction of Rain and Sewage Diversion and Reconstruction of the Old City" shall be rebuilt according to the once-in-two-year return period, and the available existing confluence pipes shall be inspected and renovated , To inspect and renovate the confluence pipeline retained during the rain and sewage diversion transformation within the plot, the length of which is about 92 kilometers. ②Design the rain and sewage diversion transformation of the old city, the transformation area is about 11.0 square kilometers, including building drainage pipes, street branch pipes, community branch pipes and municipal pipelines. A total of 669.14 kilometers of newly built pipelines.

The pipeline network quality and efficiency improvement and sewage collection project in Chengbei District mainly consists of the following three parts:

The pipeline network inspection and remediation project is designed to investigate and remediate the existing drainage pipelines in the northern part of the city. The total length of the pipeline is about 81 kilometers, of which rainwater pipes are about 51 kilometers, sewage pipes are about 30 kilometers, and the inspection and remediation area is about 14.56 square kilometers. Sewage collection project, designed to build new sewage pipelines for the existing villages in the northern district of the city that are currently discharging sewage, intercepting the discharging sewage; conducting municipal connections to the communities and factories that have been separated from the rain and sewage, so that the plots are drained and the municipal system Connected. The rain and sewage diversion project is designed to transform the rain and sewage diversion of the existing old communities and self-built houses along the municipal road in Chengbei District to improve the sewage collection rate.

River and Lake Project

The water environment comprehensive treatment project of Horseshoe Lake covers the waters of Horseshoe Lake and its coastal areas, covering an area of about 1.35km2. The main content of the project includes water quality improvement projects (sewage interception projects, non-point source pollution control projects, lake dredging projects, silt treatment, garbage Treatment, in-situ water purification project), ecological restoration project (ecological slope protection project, aquatic plant construction project), information management project, etc.

The project scope of the Lianhua Lake Water Environment Comprehensive Treatment Project covers the waters of the Lianhua Lake and its coastal areas, covering an area of about 4.7km2. The main contents of the project include water quality improvement projects (sewage interception projects, non-point source pollution control projects, lake dredging projects, silt treatment, garbage Treatment, in-situ water purification project), ecological restoration project (ecological slope protection project, aquatic plant construction project), information management project, etc.

The scope of the Nanmen River Water Environment Comprehensive Treatment Project covers the water area of the Nanmen River and its coastal areas, covering an area of about 1.5km2. The main content of the project includes water quality improvement projects (sewage interception engineering, non-point source pollution control engineering, dredging engineering, silt treatment , Garbage disposal), ecological restoration project (ecological slope protection project), information management project, etc.

The scope of the Beihu Water Environment Comprehensive Treatment Project covers the waters of the North Lake and its coastal areas, covering an area of about 3.26 km2. The main contents of the project include water quality improvement projects (sewage interception projects, non-point source pollution control projects, lake dredging projects, silt treatment, garbage treatment) , In-situ water purification project), ecological restoration project (ecological slope protection project, aquatic plant construction project), information management project, etc.

Inventory items

The sewage treatment plant project of the Xiandao Lake Eco-tourism Resort in Wangying Town, Yangxin County, with a sewage treatment design scale of 1700 m3/d and a main sewage collection network. The treatment process is: grille + grit tank + regulating tank and lifting pump room + anoxic tank + anaerobic tank + biological contact oxidation tank + grid flocculation tank + advection sedimentation tank + artificial rapid infiltration tank + contact disinfection Pool craft. The effluent water quality implements the first-level A standard.

Haoji sewage plant and sewage collection project in Fuchi Town, Yangxin County, the design scale of sewage treatment plant is 4000m3/d and sewage collection pipe network. It adopts grid + regulating tank + A2O + secondary sedimentation tank + coagulation sedimentation tank + continuous sand filter tank + sodium hypochlorite disinfection process.

Wuyi Wastewater Treatment Plant and Wastewater Collection Project in Xingguo Town, Yangxin County. The designed scale of the waste water treatment plant is 2000m3/d and the sewage collection pipe network adopts grille+regulating tank+A2O+secondary sedimentation tank+coagulation sedimentation tank+sand filter+sodium hypochlorite Disinfection process.

The second sewage treatment plant project in Yangxin County, the design scale of the sewage treatment plant is 15000m3/d. The main process adopts the process of cyclone grit settling tank + flocculation mixing tank + primary sedimentation tank + BFBR tank + filter cloth filter tank, and the effluent water quality implements the first-level A standard.

The water purification project of Yanzhen Water Plant of Yangxin County Water Supply Company. The designed water supply scale of the water plant is 100,000 m3/d. The main process of the water plant adopts the process of "grid flocculation advection sedimentation tank + V-type filter", which is divided into production management area, purification area, sludge treatment area, etc.

Keywords: engineering construction, engineering news, engineering construction information

Obtaining prequalification documents

From July 30, 2021 to August 6, 2021, every day from 08:00 to 12:00 am and 14:00 to 17:00 pm, the applicant should contact Hubei Fangyuan Engineering Cost Consulting Co., Ltd. (Address: Hubei Province Room 404, Building 2, Xiongjianao Community, Xingguo Town, Yangxin County, Huangshi City) To obtain the prequalification documents, the legal person authorization letter and a copy of the business license stamped with the official seal must be provided. The acquisition time is from 08:00 on July 30, 2021 to 17:00 on August 6, 2021. Editor/Sang Xiaomei