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Physicochemical treatment and artificial wetland combined treatment system for sewage treatment of residential area

A sewage treatment system and artificial wetland technology, applied in the direction of water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems that are not suitable for residential sewage treatment and reuse, etc. Achieve the effect of reducing physical and chemical treatment costs, simple equipment, and low operating costs

Active Publication Date: 2012-03-28
CHONGQING UNIV
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Problems solved by technology

[0005] It can be seen that the above methods have their own shortcomings, and they are not suitable for the treatment and reuse of sewage in residential areas.

Method used

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  • Physicochemical treatment and artificial wetland combined treatment system for sewage treatment of residential area
  • Physicochemical treatment and artificial wetland combined treatment system for sewage treatment of residential area
  • Physicochemical treatment and artificial wetland combined treatment system for sewage treatment of residential area

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Embodiment Construction

[0029] The combined treatment system includes two parts: a physical and chemical treatment device and an artificial wetland treatment device.

[0030] Physicochemical treatment device see figure 1 : It consists of a dosing unit 11, a rapid mixing unit 12, a mechanical flocculation unit 13 and a sedimentation unit 14 which are sequentially connected by pipelines.

[0031] The coagulant is mainly added from the dosing unit 11, which is directly added, and the coagulant addition point is located above the mixing pool of the rapid mixing unit 12.

[0032] The rapid mixing unit 12 adopts a mixing tank built on a support 18. There is a mixer 15 inside the tank with a rotation speed of 260-300r / min. The raw water enters the mixing tank, and the coagulant is fully mixed with the raw water in the mixing tank. Enter the mechanical flocculation unit 13.

[0033] The mechanical flocculation unit 13 is a mechanical stirring flocculation, which is divided into three flocculation pools, wh...

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Abstract

The invention relates to a physicochemical treatment and artificial wetland combined treatment system for sewage treatment of a residential area. The system is provided with a physicochemical treatment device and an artificial wetland treatment device which form a combined sewage treatment system, wherein an inlet for the sewage of the residential area is formed in front of the physicochemical treatment device; the outlet water of the physicochemical treatment device is connected with the artificial wetland treatment device; the physicochemical treatment is mainly used for pre-treatment, and the artificial wetland is mainly used for fine treatment so as to reach the landscape water standard (GB / T18921-2002); and the treatment capability of the artificial wetland can be brought into full play by adjusting the physicochemical treatment, so that the optimal combination of the physicochemical treatment and the physicochemical ecological combined regulation and control of the artificial wetland is realized. The combined technology of the system brings the advantages of the artificial wetland technology into full play, reduces the operating cost of the physicochemical treatment as much as possible, has high stability for the treatment efficiency of the sewage pollutants of the residential area, has small influence on the water quality, has simple equipment and low operating cost andis practical and feasible technology for the treatment and recycling of the sewage of the residential area.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a combination process of "physical and chemical treatment + artificial wetland" for treating residential sewage, and the water quality after treatment reaches the "Landscape Water Standard" (GB / T18921-2002). Background technique [0002] With the development of my country's economy and the increase of population, the process of urbanization continues to accelerate and the scale continues to expand. The cost of laying sewer pipe networks for centralized sewage treatment is getting higher and higher. In this case, the establishment of decentralized sewage treatment devices in newly built communities is not only an important means to solve the problem of domestic sewage treatment as soon as possible, but also conducive to the on-site reuse of treated water. [0003] At present, the commonly used technologies for water treatment and reuse in residential areas mai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/52C02F1/56C02F3/32C02F3/34
CPCY02W10/10
Inventor 柴宏祥何强戴臻万杰张丽
Owner CHONGQING UNIV
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