Method for classifying artificial wetland obstructions and extracting components of artificial wetland obstructions

Abstract

The invention discloses a method for classifying artificial wetland obstructions and extracting components of the artificial wetland obstructions, which belongs to the technical field of sewage treatment and particularly relates to a method for classifying inter-matrix obstructions and extracting components of the inter-matrix obstructions in an artificial wetland sewage treatment technology. The artificial wetland obstructions are definitely and primarily classified into five substances, i.e., protein, polysaccharide, humic acid, nucleic acid and inorganic matter, and the like; various components of the wetland obstructions are extracted by using methods of adding strong alkali, heating and centrifuging in sequence; and the components of the obstructions are quantitatively measured in combination with a Coomassie brilliant blue method, a sulfuric acid-anthrone method, a diphenylamine method, an improved lowry method and a gravimetric method. According to the invention, the components of the obstructions are classified more comprehensively, good obstruction classification and quantitative description effect is realized, the component extracting method is simple and feasible, the components of the obstructions can be measured in most of routine test labs, and the cost required for measuring the components of the obstructions is low; the method is high in popularity, simple and easy to learn; and the control conditions can be easily guaranteed and the interference resistance is good.

Description

technical field [0001] The invention relates to a method for classifying blockages in constructed wetlands and extracting components, belonging to the technical field of sewage treatment, and in particular to a method for classifying blockages between substrates and extracting components in constructed wetland sewage treatment technology. Background technique [0002] Constructed wetlands (abbreviated as CWs) sewage treatment technology is a new type of sewage treatment technology that emerged in the 1970s. It is artificially designed and constructed by simulating natural wetlands, and has controllability and engineering characteristics. It is a natural ecological treatment technology for sewage treatment through physical, chemical and biological actions in cooperation with plants and microorganisms. It has the advantages of convenient maintenance and management, low infrastructure and operating costs, simple process equipment, and high environmental benefits. It plays an im...

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Problems solved by technology

However, due to the insufficient depth of research on constructed wetland plugs, no one has systematically proposed a classification method for the components of constructed wetland plugs, let alone the extraction and quantitative determination of their respective components.

According to the literature, Thomas R.E hypothesized on the basis of preliminary analysis and research on the clogging substances in the matrix that the clogging substances are composed of polysaccharides and polyureas produced by anaerobic decomposition and some organic compounds that have not been degraded; Chazarence F and Kerry Rowe also came to similar conclusions and speculated that polysaccharides, humus, etc. may be the components of plugs. None of the above studies have clarified the composition of wetland plugs and their quantitative determination methods

Domestic researcher Ye Jianfeng proposed that wetland blockages are composed of non-filterable inorganic matter and non-filterable organic matter, and proposed extraction and quantitative determination methods for the components of blockages, but the classification is too general to clearly establish the components, proportions and respective relationship between properties

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