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Related Experiment Video

Updated: Nov 16, 2025

Vegetated Treatment Systems for Removing Contaminants Associated with Surface Water Toxicity in Agriculture and Urban Runoff
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Pollution Load Capacity Calculation Study Based on Multi-objective System in Trans-boundary Area, Plain River

Xiao Wang1, Min Pang2, Mingzhi Zhao3

  • 1Ningbo University, Ningbo, 315211, China.

Bulletin of Environmental Contamination and Toxicology
|February 24, 2021
PubMed
Summary
This summary is machine-generated.

A new method for pollution load control in river networks addresses transboundary pollution. This study calculates pollution load capacity considering water quality and hydrodynamics, providing key figures for chemical oxygen demand, ammonia nitrogen, and total phosphorus.

Keywords:
Multi-objective systemPollution load capacityRiver networkTaihu basinTrans-boundary area

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Area of Science:

  • Environmental Science
  • Water Resource Management
  • River Ecology

Background:

  • Transboundary pollution in plain river networks poses significant challenges.
  • Effective pollution load control requires consideration of diverse management needs and local hydrodynamic conditions.
  • Existing methods may not adequately address the complexity of spatial distribution and multiple objectives.

Purpose of the Study:

  • To propose a novel method for pollution load control in plain river networks to tackle transboundary pollution.
  • To investigate the spatial distribution of pollution load capacity considering multiple management objectives and hydrodynamic features.
  • To establish a calculation system for determining pollution load capacity across different administrative units.

Main Methods:

  • Development of a multi-objective calculation system with multiple constraints for water quality requirements.
  • Establishment of one-dimensional (1-D) and zero-dimensional (0-D) models for load capacity calculation, incorporating complex hydrodynamic characteristics.
  • Integration of the multi-objective system and models to compute spatially distributed pollution load capacities.

Main Results:

  • Calculated pollution load capacity for the Taihu basin transboundary area: 151,806 t/y for Chemical Oxygen Demand (COD).
  • Calculated pollution load capacity for ammonia nitrogen: 15,099 t/y.
  • Calculated pollution load capacity for total phosphorus: 3,394 t/y.

Conclusions:

  • The proposed method provides a rational approach to determining pollution load capacity in complex river networks.
  • The calculated load capacities for COD, ammonia nitrogen, and total phosphorus are deemed reasonable for the Taihu basin.
  • This study offers a framework for managing transboundary pollution through spatially explicit load capacity assessments.