Heavy metal sewage treatment system

A sewage treatment system and heavy metal technology, applied in water/sewage treatment, neutralized water/sewage treatment, water/sewage treatment equipment, etc., can solve the problem of sludge secondary pollution, etc., to reduce sludge discharge and land occupation Less, improve the effect of heavy metal removal rate

Pending Publication Date: 2016-11-23
SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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Problems solved by technology

Although the microbial treatment using the activated sludge method can remove part of the

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  • Heavy metal sewage treatment system

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[0016] The following further describes the present invention with reference to the accompanying drawings of the specification and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0017] Such as figure 1 As shown, the heavy metal sewage treatment system of this embodiment sequentially includes a neutralization tank 1, a coagulation reaction tank 2, a flocculation reaction tank 3, a separation tank 4, and a recovery system 5. The neutralization tank 1, coagulation reaction tank 2 is provided with Stirrer 6 and metering pump 7. The bottom of the neutralization tank 1 is connected to the coagulation reaction tank 2, and a stirrer 6 is provided in the separation tank 4. A baffle 41 is provided in the separation tank 4, and the baffle 41 divides the separation tank into a water storage area 45 and a metal area 46. The baffle 41 is provided with a microfiltration membrane 42, the upper part of the separation tank 4 is provided...

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Abstract

The invention discloses a heavy metal sewage treatment system, which successively comprises a neutralization pond, a coagulation reaction pond, a flocculation reaction pond, a separation pond and a recovery system, wherein the neutralization pond and the coagulation reaction pond are independently provided with a stirrer and a metering pump; the bottom of the neutralization pond is connected with the coagulation reaction pond; a baffle is arranged in the separation pond, and is provided with a micro-filtration membrane; the upper part of the separation pond is provided with a drain pipe; the bottom of the separation pond is connected with the recovery system through a screw conveyor. According to the heavy metal sewage processing system disclosed by the invention, a rate of removing heavy metal in sewage is improved, discharge water is improved to achieve a surface water V class standard or above, sludge discharge is reduced, and continuous operation, automation, convenience in installation, small land occupation and low cost are realized.

Description

technical field [0001] The invention relates to the field of sewage treatment equipment, in particular to a heavy metal sewage treatment system. Background technique [0002] There are many heavy metals such as copper, iron, zinc, and magnesium in sewage, which are either dissolved or suspended in sewage. The traditional sewage purification method is to remove the suspended matter in the sewage through filtration or flocculation, and then use activated sludge method, water spray filter bed method, anaerobic and other microbial treatment methods to remove the dissolved substances in the sewage. The flocculants generally used to remove suspended matter are inorganic flocculants such as aluminum sulfate, ferric sulfate, and ferrous sulfate, or polymer flocculants such as polyacrylamide and polyaluminum chloride. These flocculants can effectively remove suspended matter in sewage, but cannot remove dissolved pollutants. Soluble pollutants can be removed by microbial methods, b...

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Application Information

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IPC IPC(8): C02F9/04C02F101/20
CPCC02F9/00C02F2201/007C02F2301/08C02F1/444C02F1/66C02F1/52C02F2101/16
Inventor 黄付平覃科文黄枰宋红军韩彪黎铉海莫雅圆
Owner SCI RES ACADEMY OF GUANGXI ENVIRONMENTAL PROTECTION
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