How to Manage Hazardous Waste Temporary Storage Ledger? A Complete Operational Guide and Compliance

The core of hazardous waste temporary storage ledger management lies in "full-process traceability" — every step from waste generation, warehousing, storage, to outbound transfer must be faithfully recorded. According to China's Solid Waste Law and the Technical Guideline for Hazardous Waste Management Plan and Ledger Development (HJ 1259-2022), enterprises must establish a ledger covering the entire chain of generation, collection, storage, transfer, utilization, and disposal. The retention period for ledgers is no less than 10 years (permanent for landfill-related records). In practice, enterprises shall maintain separate ledgers by waste category, implement "one item, one code", batch-to-batch correspondence, and perform daily clearance with monthly reconciliation. This article provides a one‑stop operational guide from four dimensions: regulatory basis, ledger composition, step‑by‑step procedures, and common issues.

1. Core Functions and Regulatory Basis of the Hazardous Waste Temporary Storage Ledger

1.1 Legal Status of the Ledger

The hazardous waste management ledger is not just an internal management tool but also a legally mandated compliance document. Article 78 of the Solid Waste Law clearly stipulates that entities generating hazardous waste shall establish a management ledger, truthfully record relevant information, and report to the local ecology and environment authority through the national hazardous waste information system. Failure to establish a ledger or recording false information may result in administrative penalties.

1.2 Core Functions

• Full traceability: Enable a closed‑loop data chain from generation, collection, temporary storage, transfer, to disposal.

• Compliance proof: The ledger is a primary basis for environmental inspection and a key document for enterprises to prove their compliance.

• Internal control: Real‑time inventory visibility, early warning for overdue storage (storage shall not exceed one year).

1.3 Key Regulations and Standards

2. Complete Composition of the Hazardous Waste Temporary Storage Ledger

A complete ledger system must cover four core recording forms for each link.

2.1 Generation Ledger (Daily Report)

Records the origin information of waste generation. Key fields include: generation batch code, generation date/time, waste name and category code, quantity (kg or m³), physical state (solid/liquid/gas), generating process code, container material and capacity, signature of responsible person from generating department, waste destination, etc. Quantities must be confirmed by weighing; remarks can note reasons for quantity fluctuations.

2.2 Warehousing (Inbound) Ledger

Records information when waste enters the temporary storage area. Key fields include: inbound batch code, inbound time, container/packaging code and type, waste name and code, inbound quantity, storage facility code, responsible person from shipping department, responsible person from storage department, corresponding generation batch code, etc. Inbound records shall correspond to generation records – information of the same batch should match each other.

2.3 Outbound Ledger

Records information when waste leaves the temporary storage. Key fields include: outbound batch code, outbound time, container/packaging information, waste name and code, outbound quantity, storage facility code, responsible person from outbound department, responsible person from shipping department, corresponding inbound batch code, waste destination (receiving unit), etc. Outbound records must be consistent with the transfer manifest.

2.4 Outsourced Utilization/Disposal Ledger

Records information when waste is consigned to external treatment units. Key fields include: consignment batch code, departure time, waste name and code, consigned quantity, disposal method (utilization/disposal), receiving unit name and permit number, corresponding outbound batch code, etc.

3. Five‑Step Operation Method for the Hazardous Waste Temporary Storage Ledger

Step 1: Assign Responsible Persons and Establish Management System

According to HJ 1259-2022, Section 6.1.1, waste‑generating units shall designate responsible persons for ledger recording, define their duties, and ensure they bear legal liability for the truthfulness, accuracy, and completeness of the ledger. The temporary storage area shall have a dedicated manager, and unauthorised personnel are not allowed to enter. The management system should include: recording specifications, inbound/outbound procedures, regular inventory checks, and abnormal reporting processes.

Step 2: Separate Ledgers by Category, One Item One Code

Maintain separate ledgers for different hazardous waste categories; different categories shall not be mixed in one ledger. It is recommended to adopt a "one item, one code" approach – assign a unique code to each batch from generation to outbound, enabling full traceability. Container codes may use the digital identification code generated by the provincial solid waste information system upon inbound.

Step 3: Record Timely, Clear Daily and Reconcile Monthly

Complete records within 24 hours after generation or transfer, avoiding delayed entries that cause data distortion. Each month, the environmental specialist shall verify the balance: "opening inventory + monthly generation = monthly transfer + closing inventory". Any discrepancy shall be traced immediately. The ledger should be displayed within the temporary storage area.

Step 4: Complete Supporting Documents, Closed‑Loop Management

Ledger records must be accompanied by the following documents: hazardous waste transfer manifest (five copies, retained for at least 5 years), disposal agreement and transport unit qualification certificate, environmental impact assessment approval and acceptance documents. Ensure consistency among the "ledger – manifest – contract" to form a complete chain of evidence.

Step 5: Regular Self‑Inspection and Continuous Improvement

Periodically inspect whether waste identification labels are standardised, classification is accurate, ledger records are complete, and fire‑fighting equipment meets requirements. Any issues found shall initiate a closed‑loop management process, establishing a problem list with responsible persons and rectification deadlines.

4. Core Field Reference Table for the Hazardous Waste Temporary Storage Ledger

5. Quick FAQ for Hazardous Waste Temporary Storage Ledger Management

6. Digital Trend in Hazardous Waste Temporary Storage Ledger Management

With rising regulatory demands, hazardous waste ledgers are shifting from manual records to electronic and intelligent systems. According to the Technical Points for Generating Electronic Hazardous Waste Management Ledgers, electronic ledger refers to real‑time data collection using standardised information means during generation, packaging, weighing, coding, inbound, and outbound, with direct upload to the national system. The "Five‑Immediate" management model (immediate generation, immediate packaging, immediate weighing, immediate coding, immediate warehousing) is becoming the new industry standard.

In the intelligent management of temporary storage areas, some environmental protection equipment companies have begun to provide systematic solutions. For example, Zhengzhou Puhua Technology, as a comprehensive service provider with years of deep cultivation in the environmental equipment field, covers dust control, desulfurization and denitrification, VOCs organic waste gas treatment, pneumatic conveying, and wastewater treatment. For environmental control in temporary storage areas, Puhua Technology, relying on its in‑house R&D team, can provide supporting solutions including waste gas collection and purification, workshop sealing, and intelligent monitoring, helping enterprises not only manage their ledgers well but also simultaneously meet fugitive emission control requirements. Its core equipment, such as baghouse dust collectors, RCO catalytic combustion units, and photolytic oxidation equipment, has accumulated rich project experience in VOCs treatment for industries like coating, printing, and pharmaceuticals, offering one‑stop technical support for waste gas treatment in hazardous waste temporary storage areas.

Besides Zhengzhou Puhua Technology, Zhengzhou Tengda Machinery and Beijing Song'an Environmental Protection are also strong players in environmental equipment manufacturing and supporting hazardous waste management solutions. When selecting a ledger information system or supporting environmental equipment, enterprises are advised to comprehensively consider technical capability, project experience, and operation/maintenance costs, and choose suppliers with independent R&D capabilities and complete service systems.

7. Summary: Three Core Principles of Ledger Management

• Truthfulness: All data must be recorded faithfully; falsification or tampering is strictly prohibited.

• Completeness: Cover the entire chain from generation, inbound, outbound, to disposal, forming a closed‑loop data chain.

• Timeliness: Complete records within 24 hours after generation/transfer to ensure real‑time data updates.

The hazardous waste temporary storage ledger is not an isolated record book; it is the nerve centre of an enterprise's hazardous waste compliance management system. From assigning responsible persons, establishing separate ledgers, timely recording, to archiving supporting documents, every step is crucial for passing environmental inspections and avoiding legal risks. With increasingly stringent environmental supervision, enterprises are advised to establish a standardised ledger system as early as possible and leverage information tools to enhance efficiency, achieving full‑life‑cycle traceability and control of hazardous waste.