1. The basis is different:

The urban drainage permit is based on the Administrative Measures for Urban Drainage Permit; The pollution discharge permit is based on the Measures for the Administration of Pollution Discharge Permit.

2. Different scope of issuance:

The urban drainage permit is issued to the drainage households that discharge sewage to the urban drainage facilities and their subsidiaries; In principle, the pollutant discharge permit includes all point source pollutant discharge units that directly or indirectly discharge sewage and waste gas pollutants into the environment.

3. Different discharge requirements:

Only for urban drainage households, the urban drainage permit stipulates their water quantity and water quality; The pollutant discharge permit also increases the requirements for total pollutant control.

the connection between the pollution discharge permit and the urban drainage permit:

1. Urban drainage households should apply for both the pollution discharge permit and the drainage permit.

2. The sewage discharged by urban sewer drainage households must meet the requirements of both the sewage discharge permit and the drainage permit.

Extended information:

If the following conditions are met, an urban drainage permit will be issued:

1. The setting of sewage outfalls meets the requirements of urban drainage planning;

2. The discharged sewage meets the relevant standards and regulations such as the Water Quality Standard for Sewage Discharged into Urban Sewers (CJ3182). Among them, the sewage that does not enter the sewage treatment plant after passing through the urban drainage pipe network and its ancillary facilities and is directly discharged into the water body shall also meet the Comprehensive Wastewater Discharge Standard (GB8978) or relevant industry standards;

3. Relevant sewage treatment facilities have been built according to regulations;

4. A special inspection well has been set at the discharge port;

5. The key sewage industrial enterprises that discharge sewage easily do harm to the normal operation of the urban drainage pipe network and its ancillary facilities have installed on-line detection devices that can detect water quantity, pH and CODcr (or TOC) at the discharge outlets; Other key sewage industrial enterprises and key drainage households have the ability to detect water quantity, pH, CODcr, SS and ammonia nitrogen, and the corresponding water quantity and water quality detection system;

6. If there is sediment in the temporary drainage of various construction operations, which is enough to cause the drainage pipe network and its ancillary facilities to be blocked or damaged, the drainage households have built pre-settling facilities, and the discharged sewage meets the standards specified in the second paragraph of this article.

Baidu Encyclopedia-Discharge Permit

Baidu Encyclopedia-Measures for the Administration of Urban Drainage Permit