Waste denitration catalyst regeneration zero-discharge wastewater treatment system

A wastewater treatment system and denitrification catalyst technology, which is applied in the direction of gaseous effluent wastewater treatment, dehydration/drying/thickened sludge treatment, neutralization water/sewage treatment, etc., can solve the problems of unreusable discharge water and waste of water resources

Inactive Publication Date: 2016-10-12
ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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Problems solved by technology

[0003] The traditional chemical deposition wastewater treatment can only meet the discharge standards stipulated by the state, but there are still traces of heavy metals in it, which exist in the water body in the form of heavy metal compounds, which are direct

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  • Waste denitration catalyst regeneration zero-discharge wastewater treatment system
  • Waste denitration catalyst regeneration zero-discharge wastewater treatment system
  • Waste denitration catalyst regeneration zero-discharge wastewater treatment system

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[0030] Specific implementation method

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] like figure 1 As mentioned above, the production wastewater treatment process is briefly described as follows:

[0033] (1) Centrally collect the production wastewater and enter it into the adjustment pool to adjust the water volume and quality, provide stable operating conditions for the sewage treatment system, and balance the quality of the sewage after entering the water treatment system;

[0034] Preferably, the pH value of the pool is adjusted to 3-4 before water intake.

[0035] (2) The wastewater regulated by the regulating tank is lifted by the pump and enters the primary coagulation sedimentation tank.

[0036] Chemical method for arsenic removal: using co-precipitation method, Fe 3+ Add it to waste water containing heavy metal ions, then add alkali to adjust the pH value to 8.50-9.0, and produce brown magnet...

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Abstract

The invention discloses a waste denitration catalyst regeneration zero-discharge wastewater treatment system. A treatment method comprises the following steps: collecting the production wastewater and together feeding into a regulation tank for regulating the water quantity and water quality; lifting the wastewater regulated in the regulation tank into a first-level coagulative precipitation tank by a pump, and adding lime milk, PAM, PAC and a heavy metal capture agent; adding Fe<3+> into the wastewater, then adding alkali to regulate the pH value to 8.5-9.0, and performing blast oxidation for 20-30min; adding a reducing agent into the wastewater; after 10-20min of reaction, adding lime milk; introducing the wastewater into a second-level coagulative precipitation tank, wherein the wastewater is further precipitated through coagulation; enabling the wastewater treated by the second-level coagulative precipitation tank to flow into a middle water tank, and lifting into a filter tank by a pump for filtration; and then, enabling the wastewater to flow into a clean water tank and reusing to a production line. The system disclosed by the invention realizes a good wastewater treatment effect, the wastewater is treated before recycling, and thus a zero-discharge wastewater system is realized.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a waste denitrification catalyst regenerated zero-discharge wastewater treatment system. Background technique [0002] The denitrification catalyst will be deactivated after being used for a period of time, and the deactivation can be divided into physical deactivation and chemical deactivation. The chemical deactivation of typical SCR catalysts mainly refers to catalyst poisoning caused by alkali metals, alkaline earth metals and As, etc., and the physical deactivation mainly refers to the destruction of catalyst activity caused by high temperature sintering, wear and blockage. For the regeneration of the chemical deactivation of the catalyst, the heavy metal capture agent HMCA-1, which can selectively capture the arsenic, mercury, calcium, beryllium, barium, magnesium, iron, etc. on the surface of the spent catalyst, can be effectively captured and removed The hea...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F11/12C02F103/18
CPCC02F1/001C02F1/52C02F1/56C02F1/66C02F1/70C02F9/00C02F11/12C02F11/122C02F2103/18C02F2303/14
Inventor 许小兵徐辉刘江峰
Owner ANHUI YUANCHEN ENVIRONMENTAL PROTECTION SCI & TECH
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