README FILE
Dataset Title: ING_LAN_TW_WaterQualityMonitoring_2025_v01

GENERAL INFORMATION

Title of Dataset
Ingoldisthorpe and Langham Treatment Wetland Water Quality and Phosphorus Dynamics Dataset (2025)

Date of Data Collection
2025

Location of Data Collection
Ingoldisthorpe Treatment Wetland
Langham Treatment Wetland

Keywords
Treatment wetlands, phosphorus dynamics, phosphorus fractionation, wastewater treatment, nutrient removal, dissolved phosphorus, colloidal phosphorus, particulate phosphorus, surface flow wetlands, ecological engineering, nature-based solutions

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 phosphorus dynamics, nutrient fractionation, and treatment performance in full-scale treatment wetlands.

METHODOLOGICAL INFORMATION

Description of Dataset
This dataset contains primary field and laboratory monitoring data collected from the Ingoldisthorpe and Langham treatment wetland systems during 2025.

The dataset includes:

* water quality monitoring,
* nutrient analysis,
* phosphorus fractionation,
* and longitudinal treatment performance assessment across multiple wetland compartments.

The dataset was developed to investigate:

* phosphorus speciation,
* dissolved and particulate phosphorus dynamics,
* nutrient transformation processes,
* hydraulic influences on treatment behaviour,
* and comparative wetland performance under contrasting influent conditions.

Description of Data Collection
Water samples were collected from multiple monitoring locations throughout both treatment wetland systems, including:

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

Triplicate samples were collected where applicable.

Measured parameters may include:

* Total Phosphorus (TP)
* Total Reactive Phosphorus
* Filtered Total Phosphorus
* Orthophosphate Phosphorus (Ortho-P)
* Dissolved phosphorus fractions
* Particulate phosphorus
* Colloidal phosphorus
* Total Organic Carbon (TOC)
* Total Nitrogen (TN)
* Ammonium Nitrogen (NH4-N)
* Total Oxidised Nitrogen (TON/N)
* Dissolved Oxygen (DO)
* pH
* Temperature
* Total Suspended Solids (TSS)

Analytical Methods

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

Phosphorus Fractionation
Operational phosphorus fractionation was undertaken using filtration and difference-based fractionation methods to distinguish:

* particulate phosphorus,
* dissolved phosphorus,
* and colloidal phosphorus fractions.

Fraction definitions were based on membrane filtration approaches using standard pore-size separation procedures.

Nutrient Analysis
Nitrogen and phosphorus analyses were undertaken using spectrophotometric and laboratory analytical methods where applicable.

Experimental Conditions
Sampling was undertaken under operational full-scale wastewater treatment conditions within tertiary surface flow treatment wetland systems.

The dataset represents varying hydraulic loading, environmental conditions, and treatment behaviour across both wetland systems.

Quality Assurance / Quality Control (QA/QC)

* Triplicate measurements were collected where applicable.
* Laboratory analyses followed standard analytical procedures.
* Filtration procedures were standardised across samples.
* Samples were analysed using calibrated laboratory instrumentation.
* Data were checked for transcription and calculation errors prior to analysis.
* 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 phosphorus fractionation, nutrient dynamics, and treatment wetland performance in tertiary surface flow treatment wetlands.

Recommended Citation
Souleymane, A. A. (2026). Ingoldisthorpe and Langham Treatment Wetland Water Quality and Phosphorus Dynamics Dataset (2025). Cranfield University.

FILE NAME STRUCTURE AND FORMAT

File Name
ING_LAN_TW_PDynamics_2025_v01.csv

File Structure
Single comma-separated values (CSV) file containing water quality and phosphorus fractionation data for both treatment wetland systems.

File Format
CSV (Comma-Separated Values)

Date Format
YYYY-MM-DD where applicable.

DATA-SPECIFIC INFORMATION

Dataset Description
The dataset contains water quality and phosphorus fractionation measurements collected from multiple locations within the Ingoldisthorpe and Langham treatment wetland systems during 2025.

Variable Definitions

Water Quality Variables

* TP = Total Phosphorus
* Total Reactive P = Total Reactive Phosphorus
* Filtered TP = Filtered Total Phosphorus
* Ortho-P = Orthophosphate Phosphorus
* Dissolved P = Dissolved phosphorus fraction
* Particulate P = Particulate phosphorus fraction
* Colloidal P = Colloidal phosphorus fraction
* TOC = Total Organic Carbon
* TN = Total Nitrogen
* NH4-N = Ammonium Nitrogen
* TON/N = Total Oxidised Nitrogen
* DO = Dissolved Oxygen
* TSS = Total Suspended Solids

Units of Measurement
Concentration data are reported in milligrams per litre (mg/L) unless otherwise stated.

Missing Data Codes
Blank cells indicate unavailable or missing measurements.

Abbreviations

* TW = Treatment Wetland
* TP = Total Phosphorus
* TOC = Total Organic Carbon
* TN = Total Nitrogen
* NH4-N = Ammonium Nitrogen
* Ortho-P = Orthophosphate Phosphorus
* DO = Dissolved Oxygen
* TSS = Total Suspended Solids

VERSIONING

Version
Version 1.0

Last Updated
2026-05-29

Change Log
Version 1.0 – Initial compilation and documentation of Ingoldisthorpe and Langham treatment wetland phosphorus dynamics dataset.
