GB7959-2012

Hygienic requirements for harmless disposal of night soil

粪便无害化卫生要求

GB 7959-2012 est une norme nationale chinoise obligatoire en vigueur : Hygienic requirements for harmless disposal of night soil. Secteur : Alimentation. Thème principal : Sécurité des produits. Entrée en vigueur : 1 mai 2013.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

This standard is applicable to the supervision, testing, and hygienic evaluation of treatment effects for night soil (excreta) in urban and rural household toilets, night soil treatment plants, and small-scale harmless disposal facilities. It is mandatory for all facilities handling excreta disposal to ensure public health safety. The standard does not apply to industrial wastewater treatment.

Exigences techniques

The standard specifies hygienic requirements for various night soil treatment methods, including aerobic fermentation (thermophilic composting), anaerobic and facultative anaerobic digestion, sealed storage, and solid-liquid separation with flocculation-dehydration. For aerobic fermentation, it sets strict limits on temperature and duration, requiring temperatures to be maintained at or above 50°C for a specified period to ensure pathogen elimination. Untreated night soil is strictly prohibited from being used for agricultural fertilization or direct discharge. For anaerobic digestion, the standard defines requirements for digestion temperature and time, as well as limits for Ascaris eggs mortality/settlement rates and fecal coliform values. It mandates that *Salmonella* must not be detected in the final treated products. The standard also includes specific hygienic requirements for sealed storage and dehydration/drying treatments, emphasizing the control of mosquito and fly breeding.

Méthodes d’essai

The standard outlines a comprehensive set of monitoring and testing methods, primarily detailed in its normative appendices. These include methods for determining composting temperature, measuring moisture content, and detecting specific pathogens such as *Salmonella* and fecal coliforms. It also specifies procedures for examining parasite eggs, including *Ascaris*, hookworm, and *Schistosoma* eggs, as well as methods for distinguishing between live and dead helminth eggs. Additionally, it provides protocols for monitoring the density of mosquitoes and flies.

Questions fréquentes

What products or facilities are regulated under GB 7959-2012?

GB 7959-2012 regulates the hygienic requirements for harmless disposal of night soil. It applies to urban and rural household toilets, night soil treatment plants, and small-scale harmless disposal facilities.

Is GB 7959-2012 a mandatory standard?

Yes, all technical content in GB 7959-2012 is mandatory. Facilities must comply with its hygienic requirements for night soil treatment.

What are the key hygienic indicators specified in the standard?

Key indicators include temperature and duration for composting, mortality rates of *Ascaris* eggs, fecal coliform values, and the absence of *Salmonella* and live parasite eggs in the treated products.

The summary above provides a high-level overview of GB 7959-2012. To ensure complete compliance for your products or facilities entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 7959-2012 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Santé et hygiène
CCS: C51
ICS: 13.020
Autorité compétente: National Disease Control and Prevention Administration
Comité technique: National Disease Control and Prevention Administration

Relations

Remplace:GB 7959-1987