Domestic sewage zero emission treatment method and system

A domestic sewage and treatment system technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, sludge treatment, etc., can solve problems such as inability to achieve zero discharge, small size, and limited use occasions

Active Publication Date: 2011-06-08
XIAMEN UNIV OF TECH
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Problems solved by technology

However, since the water consumption for greening is not large, it only accounts for about 30% of the domestic sewage generated. In this way, even if all the domestic sewage is treated and reused, it cannot be fully utilized, and some sewage must be directly discharged.
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  • Domestic sewage zero emission treatment method and system
  • Domestic sewage zero emission treatment method and system
  • Domestic sewage zero emission treatment method and system

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Embodiment Construction

[0057] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0058] Disclosed in the present invention is a zero-discharge treatment method for domestic sewage, such as figure 1 Shown is a preferred embodiment of the method of the present invention. Described processing method comprises the following steps:

[0059] (1) Routine treatment of domestic sewage

[0060] The domestic sewage is treated by conventional treatment methods, so that the quality of the effluent can meet the water quality requirements for miscellaneous water.

[0061] Conventional treatment methods can be the methods described in the background art above, for example: conventional biochemical treatment + physicochemical treatment, conventional biochemical treatment + biological filter, conventional biochemical treatment + ultrafiltration, and membrane bioreactor (MBR) method, etc.

[0062] The embodiment of the present in...

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Abstract

The invention discloses a domestic sewage zero emission treatment method, which comprises the following steps of: (1) treating domestic sewage by the conventional treatment method; (2) performing advanced treatment on effluent obtained in the step (1) by using a reverse osmosis system to obtain reverse osmosis dialyzate and concentrated solution; (3) performing catalytic oxidation and biochemical treatment on the reverse osmosis concentrated solution successively; and (4) adding a flocculating agent into sludge produced in the step (1) and the step (3), making a mud cake and transporting. The domestic sewage is subjected to the conventional treatment, the effluent is subjected to advanced treatment by the reverse osmosis system, the reverse osmosis dialyzate of which the water quality can reach the standard of drinking water is used for daily life, and the further treated reverse osmosis concentrated solution of which the water quality can reach the water quality standard of non-drinking water is used for greening. The sewage can be fully utilized in a mode of treating the domestic sewage by stages, so that zero emission in the real sense is realized. The invention also discloses a domestic sewage zero emission treatment system.

Description

technical field [0001] The invention relates to a sewage treatment device, in particular to a zero-discharge treatment method and system for domestic sewage. Background technique [0002] In the daily life of living quarters, schools, office buildings and public places, a large amount of domestic sewage will be produced, such as daily sewage produced by hand washing, toilet flushing sewage produced by flushing toilets, etc. The usual treatment methods of these sewage are direct It is discharged into municipal sewage pipes and treated by municipal sewage treatment plants. In order to implement the country's strategic policies on resource conservation and environmental protection in a circular economy, some communities and buildings are equipped with sewage treatment devices to treat the sewage generated in the area, and the treated water can be used as green water. [0003] At present, the main processes of domestic sewage advanced treatment are: conventional biochemical tre...

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Application Information

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IPC IPC(8): C02F9/14C02F11/00C02F1/44
Inventor 严滨黄国和
Owner XIAMEN UNIV OF TECH
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