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首页> 外文期刊>Landbauforschung >Phosphate solubility and phosphate fertilizer effect of substances from sludge treatment - analysis of different treatment methods. [German]Original Title Phosphatloslichkeiten und Phosphatdunge-wirkung von Stoffen aus der Klarschlammauf-bereitung - Betrachtung unterschiedlicher Aufbereitungsverfahren.
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Phosphate solubility and phosphate fertilizer effect of substances from sludge treatment - analysis of different treatment methods. [German]Original Title Phosphatloslichkeiten und Phosphatdunge-wirkung von Stoffen aus der Klarschlammauf-bereitung - Betrachtung unterschiedlicher Aufbereitungsverfahren.

机译：污泥处理物质的磷酸盐溶解度和磷酸盐肥料效应-不同处理方法的分析。 [德语]原标题：污水污泥处理过程中物质的磷酸盐溶解度和磷酸盐粪便效应-考虑不同的处理方法。

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The aim of this study was to determine the P fertilization efficiency of four products from sewage sludge ash conditioned by different digestion processes compared to two undigested sewage sludge ashes. The chemical plant availability of P was determined by extraction with water, water and neutral ammon citrate and mineral acid. Subsequently, the biological plant availability was determined by measuring the P-uptake in a fertilization pot experiment with ryegrass. The magnesium-ammonium-phosphate from wet-chemical sludge digestion (Seaborne product) showed a water and neutral ammon citrate (WNA) solubility of 95% of Pt and a P-uptake of 151% compared to the zero P-control (100%). The partially with sulfuric acid digested sewage sludge ash showed a WNA solubility of 90% of Pt and a P-uptake of 123%. The AshDec product (thermically treated) has a solubility of 85% WNA and the P-uptake is 132%. The P fertilization with tricalciumphosphate resulted in a P-uptake of 105% compared to the P0 treatment. This paper shows that some products from recycled sewage sludge have a P solubility and a P fertilization effect similar to commercial P fertilizers. Therefore sludge treatment is very important to ensure the P supply in plant production, because P will be a finite resource in future.
机译：这项研究的目的是确定与两种未消化的污水污泥灰相比，通过不同消化过程处理的污水污泥灰中的四种产品的磷肥效率。通过用水，水和中性柠檬酸铵和无机酸的萃取来确定P在化工厂中的利用率。随后，通过在黑麦草的施肥罐实验中测量P吸收量来确定生物植物的利用率。湿法化学污泥消化（海运产品）中​​的镁磷酸铵盐显示水和中性柠檬酸铵（WNA）的溶解度为P t 的95％，而P吸收为151％零P​​控制（100％）。用硫酸部分消化的污水污泥灰分的WNA溶解度为P t 的90％，P吸收率为123％。 AshDec产品（经过热处理）的溶解度为85％WNA，P吸收率为132％。与P 0 处理相比，磷酸三钙对P的磷吸收量为105％。本文表明，再生污泥中的某些产品具有类似于商业磷肥的磷溶解度和磷肥效果。因此，污泥处理对于确保工厂生产中的磷供应非常重要，因为将来磷将成为一种有限的资源。

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