Method for treatment of organic drainage

A treatment method and organic technology, applied in water/sewage treatment, water treatment parameter control, biological water/sewage treatment, etc., to achieve the effects of improved agglutination, reduced usage, and good agglutination effect

Active Publication Date: 2007-02-07
KURITA WATER INDUSTRIES LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In addition, as a method of reducing the amount of flocculant added, it has also been proposed to use a polymer flocculant accelerator at the same time. However, since the cost of adding the accelerator is incurred, the current situation is that simpler and lower cost is required. price method

Method used

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  • Method for treatment of organic drainage
  • Method for treatment of organic drainage
  • Method for treatment of organic drainage

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Embodiment 1～3、 comparative example 1

[0064] Embodiment 1~3, comparative example 1, reference example 1

[0065] According to the present invention, the treatment of organic waste water is carried out by means of the apparatus shown in FIG. 1 . The water quality of the treated organic drainage, the style and operating conditions of the aeration tank and coagulation tank adopted are as follows, and the treatment is carried out according to the treatment capacity of 2400L / day.

[0066] Investigate the water quality of the biological treatment water at this time (the water quality of the effluent water of the aeration tank), the water quality of the coagulation treatment water (for the water filtered through the No. FI value measured by ASTM D 4189-95), the results are given in Table 1.

[0067] in addition, figure 2 Based on these results, a graph showing the relationship between the set pH value of the aeration tank and the FI value of the coagulation treatment water when the addition amount of the inorganic coag...

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Abstract

A method of agglomerating organic drainage by adding an inorganic coagulant to remove soluble substances and suspended substances including biological metabolites in the biologically treated water after biological treatment of organic drainage, which is effective in reducing inorganic coagulation Good coagulation treatment water can be obtained on the basis of the amount of agent added. A method for treating organic waste water, wherein, the organic waste water is introduced into a biological treatment reaction tank (1), and biologically treated in an aerobic manner, and the biological treatment flow out from the outlet of the biological treatment reaction tank (1) is An inorganic coagulant is added to the water for coagulation treatment, and the pH value of the biological treatment water in the outlet area of ​​the biological treatment reaction tank (1) is below 7.3.

Description

technical field [0001] The present invention relates to a method for treating organic waste water, and in particular, the present invention relates to a method for treating organic waste water in which, after carrying out biological treatment on organic waste water in an aerobic manner, in order to remove biological metabolites contained in the biologically treated water The soluble substances and suspended substances of the substance are added with an inorganic coagulant for coagulation treatment. This method can obtain good coagulation treatment water on the basis of reducing the amount of inorganic coagulant added. Background technique [0002] As a treatment method for organic waste water, biological treatment is widely used. In addition, in order to remove pollutants such as suspended substances and soluble substances in the biologically treated water, or to recover water when the discharge volume is large, the biologically treated water is subjected to coagulation trea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/02
CPCY02W10/10Y02W10/20B01D61/025C02F1/441C02F1/5236C02F1/66C02F3/1215C02F2209/06
Inventor 田中伦明小泉求一柳直人山田聪
Owner KURITA WATER INDUSTRIES LTD
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