WebFeb 12, 2010 · The results show that As, Cd, Pb and Zn are major contaminants in sediments, and average concentrations of these elements significantly exceed both the Control Standards for Pollutants in Sludge of China (GB4284-84) for agricultural use in acidic soils and the effect range median (ERM) values.

Characterization of sewage sludge-derived biochars from different ...

WebDec 1, 2016 · Compared with model predicted biosolids Cu HC5 input values, current standards (GB4284-84) are most likely to be less protective in acidic and neutral soil, but conservative in alkaline non-calcareous soil. Recommendations on ecological criteria for Cu in land-applied biosolids and biosolid-amended agriculture soils may be helpful to fill … WebApr 20, 2024 · National Standard of Pollutants Control of Agricultural Sludge (GB4284 84), the average concentration of four kinds of heavy metal of the sludge in the six treatment … charlie rose recent programs

国家标准 GB 4284-2024 - samr

WebJul 21, 2024 · To use sewage sludge in an environmentally safe manner, a risk assessment should be implemented, and the Chinese Control Standards for Pollutants in Sludge from Agricultural Use (GB4284-84) which is the present executive standard in China to control heavy metals contents when sewage sludge used on land, is the foundation of this study. WebJul 1, 2013 · GB4284-84 is Chinese control standards for pollutants in sludges from agricultural use executed on 18 May, 1984. Organic wastes (e.g. sewage sludge or biosolids) are known to generally contain high concentrations of metals, which remain in the final biochar product following pyrolysis [24] , [29] . Web通过本实用新型专利技术提供的系统分离出来的泥砂达到国家环保部颁发的《农用污泥中污染物控制标准(gb4284-84)》中规定的污泥排放标准(含油率≤0.3％)。（*该技术在2024年保护过期，可自由使用*） harties fishing