GB7959-2012

Hygienic requirements for harmless disposal of night soil

粪便无害化卫生要求

GB 7959-2012 é uma norma nacional chinesa obrigatória vigente: Hygienic requirements for harmless disposal of night soil. Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de mai. de 2013.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

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.

Requisitos técnicos

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.

Métodos de ensaio

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.

Perguntas frequentes

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.

Indicações de aplicabilidade

Tipo: Saúde e higiene
CCS: C51
ICS: 13.020
Órgão competente: National Disease Control and Prevention Administration
Comitê técnico: National Disease Control and Prevention Administration

Relações

Substitui:GB 7959-1987