DB21/T 4133-2025 Active Liaoning ProvinceLocal standards

DB21/T 4133-2025 Technical Guidelines for Upgrading and Transforming Urban Wastewater Treatment Plants to Meet Higher Standards

DB21/T 4133-2025 DB21/T 4133-2025 Urban sewage treatment plant upgrading and transformation technical guidelines

Publish Date: 2025-04-30 Implement Date: 2025-05-30 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: DB21/T 4133-2025

Standard Type: Local standards

Standard Status: Active

is_force_gb: no

CCS Name: Integrated Environmental Protection

ICS Name: \nWastewater

Publish Date: 2025-04-30

Implement Date: 2025-05-30

Development Information

Related Standards

GB/T 3839-1983 Active

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Publish Date: 1983-09-14

GB 4284-1984 Replaced

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GB 4914-1985 Replaced

GB 4914-1985 Effluent standards for oil-bearing waste water from offshore petroleum development industry

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GB/T 4918-1985 Abolished

GB/T 4918-1985 Waste water from manufacturing process—Determination of total nitro compounds—Spectrophotometric method

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GB/T 4919-1985 Abolished

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Publish Date: 1985-01-18

GB 9135-1988 Abolished

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