Sewage treatment method and sewage treatment device
A technology of sewage treatment device and sewage treatment method, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Standards and other issues, to achieve the effect of being beneficial to environmental protection and resources, beneficial to recycling, and reducing secondary pollution
Inactive Publication Date: 2015-01-21
吴玲玲
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Problems solved by technology
[0007] However, the above disclosed patents still cannot simultaneously solve the technical problems of reducing the concentration of heavy metals in domestic sewage and COD to discharge standards
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[0031] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0032] like figure 1 Shown, the sewage treatment method of an embodiment comprises the steps:
[0033] S110: Deslagging and pulverizing the sewage, and filtering to obtain the first pretreated sewage.
[0034] By deslagging and crushing sewage, various food wastes in domestic sewage...
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The invention relates to a sewage treatment method which comprises the following steps: deslagging sewage and filtering to obtain first pre-treated sewage; adjusting the power of hydrogen of the first pre-treated sewage and standing to obtain second pre-treated sewage; adjusting the power of hydrogen of the second pre-treated sewage to obtain third pre-treated sewage; carrying out anaerobic decontaminating treatment on the third pre-treated sewage to obtain fourth pre-treated sewage; carrying out aerobiotic decontaminating treatment on the fourth pre-treated sewage to obtain fifth pre-treated sewage; concentrating and standing the fifth pre-treated sewage to obtain pre-treated bottom mud and pre-treated water; drying and crushing the pre-treated bottom mud to obtain agricultural bottom mud; and carrying out reverse osmosis treatment on the pre-treated water to obtain clean water. Sludge generated by the sewage treatment method does not bring heavy metals. The obtained bottom mud can be used as agricultural bottom mud, so that secondary pollution of sludge is reduced, thereby facilitating environmental protection and recycling of resources. In addition, the invention further provides a sewage treatment device.
Description
technical field [0001] The invention relates to the field of sewage treatment, in particular to a sewage treatment method and a sewage treatment device. Background technique [0002] Sewage produced in the process of human life is one of the main sources of water pollution, which mainly includes feces and washing sewage. The amount of domestic sewage discharged per person per day in a city is 150L-400L, which is closely related to the living standard. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar and fatty protein; it also often contains pathogenic bacteria, viruses and parasite eggs; inorganic salts such as chloride, sulfate, phosphate, bicarbonate and sodium, Potassium, calcium, magnesium, and a small amount of heavy metals. [0003] In response to the above problems, most cities currently have sewage treatment points to treat the domestic sewage and then discharge it to the outside to protect the ecological environment. The...
Claims
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Inventor 吴玲玲
Owner 吴玲玲