README FILE
Dataset Title: LAN_TW_WaterBalance_2025_v01

GENERAL INFORMATION

Title of Dataset
Langham Treatment Wetland Water and Nutrient Balance Dataset (2025)

Date of Data Collection
2025

Location of Data Collection
Langham Treatment Wetland

Keywords
Treatment wetlands, water balance, nutrient balance, hydraulic loading, phosphorus retention, nitrogen removal, wastewater treatment, mass balance, surface flow wetlands, ecological engineering

Data Collection and Analysis
Ayisha Affo Souleymane
PhD Researcher
School of Water, Energy and Environment
Cranfield University

Collaborating Organisations
Anglian Water
Norfolk Rivers Trust

Supervisory Institution
Cranfield University

Funding Source
This dataset was generated as part of a PhD research project investigating nutrient dynamics, hydraulic behaviour, phosphorus retention, and treatment performance in full-scale treatment wetlands.

METHODOLOGICAL INFORMATION

Description of Dataset
This dataset contains water balance and nutrient balance calculations associated with the Langham treatment wetland during 2025.

The dataset integrates:

* flow measurements,
* water quality monitoring,
* hydraulic loading calculations,
* nutrient concentration data,
* and mass balance calculations.

The dataset was developed to investigate:

* hydraulic behaviour,
* nutrient loading,
* phosphorus retention,
* nitrogen removal,
* longitudinal treatment performance,
* and overall wetland treatment efficiency.

Description of Data Collection
Water quality and flow data were collected from multiple locations throughout the treatment wetland system, including:

* inlet locations,
* intermediate treatment cells,
* and outlet locations.

Measured and calculated parameters may include:

* Flow rate
* Hydraulic loading
* Water balance
* Nutrient loads
* Phosphorus loads
* Nitrogen loads
* Removal efficiency
* Retention efficiency
* Mass balance estimates

Analytical Methods

Water Quality Analysis
Water quality analyses were undertaken using standard wastewater laboratory analytical procedures.

Hydraulic and Water Balance Calculations
Water balance calculations were derived from measured flow data and associated monitoring records.

Hydraulic calculations included:

* inflow and outflow estimation,
* hydraulic loading calculations,
* retention calculations,
* and compartment-level water distribution assessment.

Nutrient and Mass Balance Calculations
Nutrient mass balances were calculated using measured concentration and flow data.

Load calculations were derived using:

* concentration × flow relationships,
* compartment-level retention estimates,
* and longitudinal treatment performance calculations.

Phosphorus and nitrogen balances were used to estimate:

* nutrient removal efficiency,
* nutrient storage,
* and overall treatment performance.

Experimental Conditions
The dataset represents operational full-scale wastewater treatment wetland conditions under varying hydraulic and environmental conditions during 2025.

Quality Assurance / Quality Control (QA/QC)

* Flow and water quality data were checked for consistency prior to analysis.
* Calculations were verified for unit consistency and transcription errors.
* Laboratory analyses followed standard analytical procedures.
* Missing values were retained as blank cells where applicable.

SHARING AND ACCESS INFORMATION

License and Restrictions
Dataset generated as part of doctoral research at Cranfield University in collaboration with Anglian Water and Norfolk Rivers Trust.

Users should acknowledge Cranfield University, Anglian Water, and Norfolk Rivers Trust where appropriate.

Associated Publications
This dataset contributes to ongoing PhD research examining hydraulic behaviour, nutrient dynamics, phosphorus retention, and treatment performance in tertiary surface flow treatment wetlands.

Recommended Citation
Souleymane, A. A. (2026). Langham Treatment Wetland Water and Nutrient Balance Dataset (2025). Cranfield University.

FILE NAME STRUCTURE AND FORMAT

File Name
LAN_TW_Water_NutrientBalance_2025_v01.csv

File Structure
Single comma-separated values (CSV) file containing hydraulic, nutrient balance, and mass balance calculations.

File Format
CSV (Comma-Separated Values)

Date Format
YYYY-MM-DD where applicable.

DATA-SPECIFIC INFORMATION

Dataset Description
The dataset contains hydraulic and water balance calculations associated with the Langham treatment wetland during 2025.

Variable Definitions

Hydraulic Variables

* Flow rate
* Hydraulic loading rate
* Water balance
* 
Units of Measurement
Flow data are reported in cubic metres per day (m³/day) unless otherwise stated.
Missing Data Codes
Blank cells indicate unavailable or missing measurements.

Abbreviations

* TW = Treatment Wetland
* HLR = Hydraulic Loading Rate
* TP = Total Phosphorus
* TN = Total Nitrogen
* NH4-N = Ammonium Nitrogen
* HRT = Hydraulic Retention Time

VERSIONING

Version
Version 1.0

Last Updated
2026-05-29

Change Log
Version 1.0 – Initial compilation and documentation of Langham treatment wetland water and nutrient balance dataset.
