Preparation method of standard sample for inorganic components in urban sludge and standard sample prepared thereby

A technology of standard samples and inorganic components, which is used in the preparation, sampling, and analysis of materials for testing to achieve the effect of harmless treatment and accurate measurement results.

Active Publication Date: 2017-05-17
青岛水务集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are no sludge standard samples for monitoring various indicators of urban sludge at home and abroad.

Method used

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  • Preparation method of standard sample for inorganic components in urban sludge and standard sample prepared thereby
  • Preparation method of standard sample for inorganic components in urban sludge and standard sample prepared thereby
  • Preparation method of standard sample for inorganic components in urban sludge and standard sample prepared thereby

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with specific embodiments.

[0037] The preparation method of inorganic component standard sample in urban sludge comprises the following steps:

[0038] (1) Collect samples: collect dehydrated sludge from urban sewage treatment plants;

[0039] (2) Preliminary determination: measure the content of various inorganic substances in the sludge respectively; the content of each component in the preliminary determination of the sludge is to avoid that due to the low content of a certain component, that is, when it is close to or lower than the minimum detection limit, Cannot be used as a standard sample;

[0040] (3) Soaking: According to the concentration of the sample to be prepared, configure a standard solution of the corresponding concentration as the soaking solution, put the sludge sample in a clean container, add the soaking solution evenly, and repeat every 2 to 3 hours at room temperature Stir t...

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Abstract

The invention relates to a preparation method of a standard sample for inorganic components in urban sludge; the method comprises the steps of acquiring a sample; measuring preliminarily; soaking; mixing well; air-drying; drying by baking; mixing well for the second time, to be specific, mixing well again by means of pile shifting method; grinding, and screening; mixing well for the third time; primarily inspecting uniformity; subjecting the sample passing the primary inspection of uniformity to uniformity inspection, stability inspection, and fixed value and uncertainty estimation again so as to perform fixed value calibration on the sludge sample. According to the standard sample for inorganic matters in urban sludge prepared herein, results of standard recovery for sludge samples A and B are better than the results of both a soil standard sample and a precipitate standard sample. Therefore, the standard sample of sludge prepared by using the method is more suitable for the quality control in monitoring inorganic matters in sludge from urban sewage treatment plants and urban disposed sludge; by preparing the special standard sample of sludge, measurement results for sludge quality control process are more accurate, a sludge treatment process can be accurately guided, and late harmless treatment of sludge is facilitated.

Description

technical field [0001] The invention relates to the field of urban sludge treatment, in particular to a method for preparing standard samples of inorganic components in urban sludge and the prepared standard samples. Background technique [0002] With the continuous improvement of my country's urbanization level, the construction of sewage treatment facilities has developed rapidly. As of 2010, the urban sewage treatment capacity has reached 122 million m 3 , the number of urban sewage treatment plants has reached more than 2,600, and the sewage treatment capacity will increase by 90 million m during the "Twelfth Five-Year Plan" period 3 , More than 1,800 urban sewage treatment plants have been built or are under construction, making great contributions to the realization of national emission reduction targets and pollution control. [0003] However, the construction and operation of sewage treatment plants is accompanied by the production of a large amount of excess sludge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N33/24
CPCG01N1/286G01N33/24G01N2001/2893
Inventor 高燚王迪迪孙伟香崔磊丁浩孙翌赵军星李王菲
Owner 青岛水务集团有限公司
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