T/SSESB 5-2023 Active Group standards

T/SSESB 5-2023 Guidelines for Building and Ecological Restoration of Urban Lake Ecosystems

Publish Date: 2023-03-30 Implement Date: 2023-04-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/SSESB 5-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Integrated Environment and Environmental Protection

Publish Date: 2023-03-30

Implement Date: 2023-04-01

Scope

Main Technical Content: 6. Water Ecosystem Restoration Plan Design 6.1 Design Objectives The design objectives aim to achieve biological restoration goals, with the ideal state being to restore the water body to its pre-damaged (original) state, i.e., the ecological restoration target. Considering the time scale of determining the original target of the water body, general ecological restoration objectives are proposed: (1) Transparency Target: The water transparency should be above 1.2 m throughout the year, and if it is less than 1.2 m, it should be crystal clear. A comprehensive "grass-type clear water state" water body should be constructed, and specific targets can be set based on local conditions. (2) Water Quality Target: The main eutrophication indicators (dissolved oxygen, CODMn, ammonia nitrogen, and total phosphorus) should be stabilized at Class III-IV water quality standards according to GB 3838. (3) Health Target: The ecological health evaluation of urban lakes should reach a level above "healthy," with specific reference to Chapter 8.6. 6.2 Design Principles 6.2.1 General Principles Determining the ecological function, positioning, and goals of the target water body is the foundation of the design of a high-stability water ecosystem restoration plan for urban landscape lakes. The design should be systematic and holistic, focusing on ecological functions such as water resources, water quality purification, and biodiversity protection, while also considering water safety, water landscape, water culture, and water economy. 6.2.2 "One Lake, One Plan" Design Principle The design of a high-stability water ecosystem restoration plan for urban lakes should follow the urban lake's own functions, environmental quality requirements, and ecological positioning. For lakes with good health status, preventive maintenance measures should be prioritized. For urban lakes with minor damage, water ecological restoration measures can be prioritized.