灌溉水质标准

河北省元氏县农业水资源严重不足，县城污水年排放量335万m3，按《农田灌溉水质标准》属超标水质。

Water resources for agriculture in Yuanshi County is of scarcity and the annual sewage discharge reaches 3.35 million m3 which is exceed the quality standard for irrigation water .

用磷石膏修复再生水后，处理水的化学指标达到灌溉水质标准。

After repaired with phosphorous plaster , the chemical property of reclaimed water was bordered on irrigation water standard .

雄县地热水中氯化物及总固体的含量也超过农田灌溉水质标准；

The concentration of chloride and total resolvable solid also can not meet the standard of water quality for farmland irrigation in Xiong county .

我国城市污水处理率尚不到15%，全国30%~40%的水源已不符合灌溉水质标准。

Less than 15 % sewage are treated and about 30 % to 40 % of irrigation water resource are unsuitable to irrigation in China .

本课题还进行了污水处理及环保试验研究，所得清水测定结果完全符合选矿厂洗矿水排放及农田灌溉水质标准。

Wastewater treatment and environment protection have been tested , the results show that the effluent can steadily reach the standard of wastewater discharge for Ore-dressing plant and of irrigation for farmland .

污水中7种重金属含量为农田灌溉水质标准的48～34倍，部分有机污染物含量为灌溉水质标准的110～187倍。

The heavy metal contents in wastewater are 4 8 to 34 times of the standard values for irrigation water quality , and the contents of some organic pollutants are also higher than those of the standard .

对福州和雄县13眼地热井的调查结果表明：地热水中多数指标的含量符合生活饮用水和农田灌溉水质标准；

Thirteen geothermal wells were investigated in Fuzhou area and xiong county . The most content of physical and chemical parameters in geothermal water can meet the hygienic standard for drinking water , aad standard of water quality for farmland irrigation .

在试验条件下，当汞和铅的原水浓度达到污水排入城市下水道水质标准时，去除率在70%以上，出水满足农业灌溉水质标准。

Under experimental conditions , when initial contents of Hg and Pb reach the water quality standards for municipal sewer sewage , the removal efficiency is beyond 70 % , and the effluent can reach the water quality standards for agricultural irrigation .

即使在粉煤灰钝化污泥与土壤以1：1体积比的高施用量情况下，其渗滤水中这四种重金属的含量仍未超过农田灌溉水质标准。

Even if in the circumstance of stabilized sewage sludge with soil at 1:1 ( V / V ), the content of this four kinds of heavy metal in infiltration still did not exceed the criterion of water quality in farm irrigation .

另外，本工艺可根据污水不同的出路，调整运行方式，使出水达到污水综合一级排放标准和农田灌溉水质标准。

In addition , the SBR technics can adjust the operation patterns on the basis of the different drainage ways of the wastewater , and so the treated water can meet the grade one of Integrate Wastewater Discharge Standard and the Standards for Irrigation Water Quality .

当污染指数≥2.98-<4.90时，污染物含量亦未超标，但已有1种以上污染物含量达到农用灌溉水质二类标准；

When the pollution index is > 2.98-4.9 , the pollutants are not over the standard capacity but there is at least a kind of pollutants that complies with the second standard capacity of irrigation water ;

因此，农田污水灌溉要严格执行灌溉水质标准，禁止盲目灌溉，防止土壤和蔬菜的污染。

So it was necessary to carry out irrigation water standard strictly and forbid blindness irrigation to prevent soil and vegetable pollution .

根据国内外研究概况、室内水培试验和田间灌溉试验的结果，总结再生水灌溉绿地水质控制标准，对每项指标给出了最大限值。

The maximum limited values are given for each index according to the research development abroad and at home , and the results of indoor plant water cultivation and field test .