GOTS认证咨询废水质量需满足环境许可要求的限量值

2.4.11 Wastewater Treatment

2.4.11 污水处理

“Wastewater from all wet processing units shall be treated in an internal or external functional wastewater treatment plant before discharged to environment.” …

“所有湿加工单元的废水在向外界环境排放之前，应经过一个有效运转的内部或外部废水处理厂的处理。”…

Interpretation:

释义：

The question whether a treatment plant is functional or not mainly depends on the inputs used in wet processing. For a unit only performing dyeing with natural dyes and auxiliaries, a simple biological treatment system may be appropriate whereas for an industrial unit working with chemical dyes and auxiliaries at least a 2-stage treatment plant is requested. Units using auxiliaries that are approved because of its adequate eliminability (e.g. acc. to OECD 302B) shall in addition have a functioning treatment of the sludge.

关于污水处理厂是否有效，主要取决于湿加工过程使用的投入物。对于只使用天然的染料和助剂进行染色的单位，一个简单的生物处理系统就可满足；而对于一个使用化学染料和助剂工作的工业单位，则要求至少有一个二级污水处理厂。使用通过审批助剂的单位，因有充分的去除能力（如：根据OECD 302B），则

还应配备一个有效的污泥处理系统。

… "The applicable national and local legal requirements for wastewater treatment - including limit values with regard to pH, temperature, TOC, BOD, COD, colour removal, residues of (chemical) pollutants and discharge routes - shall be fulfilled." …

……“经过处理的污水应达到相应国家和当地法规的污水处理要求——包括关于 pH 值、温度、TOC、BOD、COD、脱色、（化学）污染残留物的限量值以及排放路径的规定。”…

Interpretation:

释义：

It is expected that within the GOTS certification procedures compliance with the national and local legal requirements is checked on basis of the corresponding official environmental permit and through appropriate verification means. In specific it shall be assured that:

GOTS 认证程序希望基于对应的guan方环境许可证和通过适当的核查途径来检查与国家和当地法规要求的

符合性。尤其应确保：

- the quality of discharged wastewater continuously complies with all requirements and limits defined in the environmental permit.

- 排放的废水的质量持续符合环境许可证上规定的所有要求和限量值。

- if the wastewater is treated (partly) in an external plant, that the wet processor has a valid delivery contract with the operator of the external treatment plant while

- 若废水在外部废水处理厂（部分）处理，则湿加工单位要有与外部废水处理厂操作方签订的有效的废水处理输送合同，且

 the contract indicates the parameters and the related limits which must be respected before discharging the wastewater to the receiving treatment plant

 合同中要明确规定废水排放到接收处理厂之前必须符合的参数和相关限量值

 the operator of the external plant is legally authorised for this operation and continuously complies with the national and local legal requirements and limits

 外部污水处理厂的操作方有该污水操作的合法授权，且持续符合国家和当地法规的要求和限量值

- the quantity of wastewater to be treated does not exceed the capacity of the on-site treatment plant and/or the maximum quantity indicated in the delivery contract

- 要处理的污水的数量不超过现场处理厂的能力，及（或）输送合同中指定的Z大数量

- the indicated quantity to be treated matches with the actual processing water quantity used and discharged

- 指示的污水处理量与实际的加工用水数量和污水排放数量匹配

Interpretation:

解释：

If the local legal requirements are stricter than GOTS criteria, local laws shall be followed and vice-versa.

如果当地法律要求比GOTS标准更严格，则应遵循当地法律，反之亦然。

… "Wastewater discharges to the environment must not exceed 20 g COD/kg of processed textile (output). For scouring greasy wool an exceptional limit of 45 g COD/kg applies. " …

……“向外界环境排放的污水，平均每公斤加工的纺织品（产出）的 COD 值不得超过 20 克。对于洗涤含脂羊毛操作，允许平均每公斤纺织品产出的 COD 值不超过 45 克”……

Interpretation:

释义：

Criteria in this Section relate to compliance requirements for the entire facility.

本节标准与整个场所的合规要求相关。

The requirement shall be measured downstream of internal (on-site) wastewater treatment plant and/or external (off-site, e.g. municipal) wastewater treatment plant receiving wastewater from these wet processing sites.

应对内部（现场）废水处理厂及（或）接收这些湿加工场所流出污水的外部（场外的，如市政的）污水处理厂下游的要求进行测量。

The applicable test method for COD determination is ISO 6060.

测定COD的适用测试方法是ISO 6060。

The applicable calculation method in this context is as following:

适用的计算方法如下：

(C/1000) x (Vx1000) / (Wx1000) = …….. g COD/kg

with:

其中：

C (in mg/l) = COD concentration in water discharged to environment after treatment

C (mg/l) =污水处理后排放到外界环境时的COD浓度

V (in m3) = Volume of water discharged in the calculation period

V (m3) = 计算周期内排放的污水的体积

W (in ton) = Weight of textile output in tonnage in the calculation period

W (吨) = 计算周期内产出的纺织品的吨位重量

Reference:

参考文献：

ISO 6060 Water quality - Determination of the chemical oxygen demand

ISO 6060水质-化学需氧量的测定

Note : COD requirements for GOTS are measured in g/kg of processed output. Typical COD test reports contain COD values in g/lit of effluent / discharge. Inspectors will need to calculate the COD in g/kg of processed output based on calculation given above in these cases.

注：GOTS标准下的COD值要求是以每公斤加工产出品的COD克数进行测量，而常用的COD测试报告则以流出/排放升数中含有的COD克数进行计算。在这种情况下，检查员需要按照上述要求计算相应的COD值。