What data in this category looks like
Water treatment financing daily report data is sourced from project announcements released by ecological environment departments, public financing announcements from water utility operators, and winning bid information from local public resource trading platforms. Updates occur daily, covering new water treatment financing projects from the previous calendar day. The data uses structured JSON or CSV format, and includes fields such as project name, water treatment scale (unit: cubic meters per day), total financing amount (unit: ten thousand yuan), financing subject, project location, core pollutant removal types (e.g., COD, ammonia nitrogen, total phosphorus), and signing date. Each entry corresponds to a single financing project, with no nested sub-items.
What constraints do these characteristics impose on the HTTP Interfaces and External Systems link
The daily update requirement means the interface must support scheduled pull tasks. Pull frequency must match the data source's update rhythm to avoid duplicate pulls or data lag. Water treatment project fields include environment-specific parameters such as pollutant removal type and treatment scale. The interface must support filtering by these fields to accurately retrieve target data. Financing amount and treatment scale have clear units. Values returned by the interface must use unified unit formats to prevent data parsing errors in external systems. Most data sources are government public platforms. Some interfaces require access tokens, and permissions are bound to specific data categories. Authentication parameters must be configured strictly.
How to set configurations
| Configuration Item | Recommended Value | Rationale |
|---|---|---|
FETCH_INTERVAL | 86400 seconds | Matches the daily update rhythm of water treatment financing daily reports, avoids duplicate pulls or data lag |
DATA_SOURCE_TYPE | ["environmental_bureau", "public_resource_trade"] | Covers the main public sources of water treatment financing data, improves data completeness |
UNITS_CONVERSION_RULE | standardize_to_ten_thousand_yuan, standardize_to_cubic_meter_per_day | Unifies unit formats for financing amount and treatment scale, adapts to external system parsing rules |
FILTER_FIELDS | ["project_location", "pollutant_type"] | Supports filtering target data by region and pollutant type, matches the segmented needs of water treatment businesses |
REQUEST_TIMEOUT | 300 seconds | Reserves sufficient time for multi-source data pulling and parsing, prevents request failures due to network fluctuations |
MAX_RETRY_TIMES | 3 times | Addresses temporary fluctuations in government platform interfaces, improves the success rate of data pulling |
The parameter values provided on this page are common starting points for configuration. Actual values are affected by material form, data volume and business rules, so specific issues require specific analysis. It is recommended to test on your own samples before finalizing settings.
Three common errors
- Phenomenon: The
pollutant_typefield returned by the interface is empty. Cause: The mandatory pull rule for this field was not configured inFILTER_FIELDS, causing the data source to filter out the corresponding parameter. - Phenomenon: The request returns a
403 Forbiddenstatus code, and the log shows the token is the fixed stringfastgpt. Cause: The permission scope of the access token was not configured correctly, only general interface permissions were bound, and access permissions for water treatment financing data were not granted. - Phenomenon: The update time of pulled data lags by more than 24 hours. Cause:
FETCH_INTERVALis set to172800 seconds, which does not match the daily update rhythm of the data source, resulting in delayed data synchronization.
How to confirm the configuration is complete
- Manually trigger a data pull task, check the JSON structure returned by the interface, confirm that preset fields such as
project_name,financing_amount,publish_dateare included. - Check the system log, confirm that the most recent pull task returns a
200 OKstatus code, with no parameter parsing error prompts. - Compare the daily announcement information from the local ecological environment bureau, confirm that the number of pulled projects matches the publicly disclosed quantity.
- Adjust
FILTER_FIELDSto a specific region, verify whether the interface can accurately return water treatment financing data for the corresponding area.
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.