What the data for this category looks like
Water treatment research report data primarily comes from industry association public reports, water utility operation documents, environmental protection department monitoring announcements, and special reports from third-party consulting institutions. Updates align with industry policy adjustments, project implementation progress, and quarterly operation data releases. Most documents include project overviews, process parameters, equipment specifications, water quality monitoring tables, cost accounting, and conclusion recommendations. Core fields include treatment scale, influent/effluent water quality indicators, chemical dosage, operating duration, and more. Units mostly follow professional metering standards such as mg/L, m³/d, tons/day, and other similar standards.
What constraints do these characteristics impose on the "document parsing and chunking" link?
Water treatment research reports have a high proportion of structured data, including numerous numerical fields tied to professional units. During parsing, the table row and column structure must be preserved to avoid splitting numerical values and their units. Long paragraphs of process descriptions and multi-page nested tables require that chunking does not break the integrity of professional content. Research reports released by different institutions have large variations in layout; some documents are in scanned image format, so parsing logic must adapt to multiple document types. Additionally, a single research report may contain complete data for multiple projects, so parsing and chunking must avoid incorrect splicing of cross-project content.
How to set the configurations
| Configuration Item | Recommended Setting | Rationale |
|---|---|---|
parse_pdf_table_mode | "Preserve original table structure" mode | Water treatment research reports contain numerous tables of water quality and equipment parameters. Preserving structure avoids splitting professional numerical values and their units |
chunk_size | 800–1200 characters | Water treatment has dense professional terminology. Excessively long chunks reduce retrieval accuracy, while excessively short chunks break the integrity of process descriptions |
chunk_overlap | 100–150 characters | Ensures consistent cross-chunk retrieval of continuous content such as process steps and equipment parameters |
UPLOAD_FILE_MAX_SIZE | 500 MB | A single water treatment research report may contain complete monitoring data for multiple projects, requiring support for large file uploads |
PARSE_FILE_TIMEOUT_SECONDS | 600 seconds | Large multi-table PDF parsing takes significant time; this avoids early timeout causing parsing failure |
enable_field_extraction | Enabled | Automatically extracts structured fields such as water quality indicators and treatment scale to facilitate subsequent precise retrieval |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material format, data volume, and business rules. Specific issues require individual analysis, and it is recommended to test on your own samples before finalizing settings.
Three common mistakes
- Phenomenon: After uploading a water treatment research report, search tests return no results. Cause: The
enable_field_extractionconfiguration is not enabled, orchunk_sizeis set too small, splitting professional parameter tables into meaningless fragmented segments. - Phenomenon: In local deployment scenarios, the data processing status shows as empty after uploading a file. Cause: The value set for
PARSE_FILE_TIMEOUT_SECONDSis lower than the actual parsing time, or theUPLOAD_FILE_MAX_SIZElimit is smaller than the uploaded file size, causing the parsing process to be forcibly terminated. - Phenomenon: Some water treatment research reports fail to recognize content after upload. Cause: The PDF is in scanned image format, and OCR parsing configuration is not enabled, or embedded tables in the document are not correctly extracted.
How to confirm the configuration is correct
- Upload a test PDF containing structured water quality tables, and verify that the parsed text retains complete row and column structures with no misplaced cell content.
- Run a search test, enter water treatment professional terminology, and verify that the returned results contain complete content of the corresponding fields with no fragmented segments.
- Review the data processing logs to confirm that parsing time does not exceed the value set for
PARSE_FILE_TIMEOUT_SECONDS, with no timeout errors. - Confirm that the uploaded file size is within the range specified by
UPLOAD_FILE_MAX_SIZEto avoid interception due to oversized files.
Question material comes from public community discussions. Configuration values are common starting points and should be measured against your own samples. Verified on 2026-09-14.