Method and equipment for removing copper in non-point source sewage employing periphyton processing system

Abstract

The invention discloses a method and equipment for removing copper in non-point source sewage employing a periphyton processing system. The method comprises the following steps: (1) design of a periphyton reactor, wherein a main body is made of a transparent material, and comprises a water inlet and out straight pipe section and a spiral coil pipeline; (2) pretreatment of the periphyton reactor, namely, corroding the inner wall to increase the specific surface area; (3) enrichment of periphytons; (4) design of a periphyton processing system, wherein the periphyton processing system is composed of a filter basin, a reaction tank and a sedimentation tank; (5) design of a reaction tank, wherein the reaction tank is arranged between a water inlet aerator pipe and a water outlet aerator pipe, and is connected with a plurality of periphyton reactors which are connected with one another in parallel; (6) control on key environmental conditions; and (7) later disposition of the periphytons in the system, namely, extracting the periphytons from the periphyton reactors, collecting together, carrying out innocent treatment, further collecting copper from the periphytons, and utilizing. Through collecting functions of microorganisms in the periphyton system, the method is high in removal rate on copper in the non-point source sewage, low in operation cost and friendly to environment.

Description

technical field [0001] The invention belongs to the field of ecology and environmental protection, relates to the field of non-point source sewage purification, in particular to a method for removing copper in non-point source sewage by utilizing a Zhoucong biological treatment system. The present invention also relates to the equipment used in this method: Zhoucong biological treatment system. Background technique [0002] At present, the environmental problems caused by heavy metal pollution are becoming more and more serious. At present, incidents such as lead poisoning and fetal malformation caused by heavy metals have also occurred frequently, making heavy metal pollution a major environmental problem related to human life and health. According to reports, from 2009 to 2010, there were as many as 31 cases of heavy metal poisoning in my country. Heavy metals mainly enter the water body with human industrial and agricultural activities, resulting in the content of heavy...

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Problems solved by technology

[0015] It can be seen that neither the traditional heavy metal (such as copper) removal technology nor some emerging technologies related to microorganisms that are currently applying for invention patents cannot remove heavy metals in water once and for all. Heavy metals in regular agricultural non-point source sewage, therefore, it is urgent to develop new heavy metal (such as copper) removal technology

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