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Process for treating petrochemical wastewater

A technology for petrochemical and wastewater treatment, applied in chemical instruments and methods, separation methods, aerobic process treatment, etc., can solve the problems of low pollutant removal rate, reduced sewage treatment volume, poor sludge return, etc., and achieve operational Easy maintenance, saving operating costs, and increased sludge concentration

Inactive Publication Date: 2005-09-21
姚丽华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of this treatment method is that in the process of biochemical treatment in the aeration tank, only simple oxidation treatment is used, so that some areas inside the aeration zone are insufficiently oxygenated, sludge is easy to accumulate at the bottom of the tank, and the sludge reflux is not good, thereby reducing the sewage The treatment capacity and pollutant removal rate are also low

Method used

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Embodiment Construction

[0007] According to the structure, volume, surface area and sewage treatment capacity of the aeration tank and the aeration area of ​​the aerator, the present invention installs fillers on the rising section of the clear water in the clarification area of ​​the aeration tank. The fillers can be vinylon fillers, FRP honeycomb filler, or combined filler, etc., can make full use of this part of the dissolved oxygen to combine the activated sludge method with the biofilm method, so that the sewage is treated with the biofilm method after the activated sludge treatment, thereby improving the purification efficiency. .

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Abstract

The invention provides a method for processing petrochemical wastewater by the combination of activated sludge process and biological film process, the improvement in the invention comprises the following steps: adding a processing step of primary biological film process in the aeration tank of the original effluent treatment process art, processing the petrochemical wastewater by a two-step biological areobic treatment, namely, processing the waste water in the aeration tank using activated sludge process at first, then processing the waste water in the same tank using biological film process. Before leaving the aeration tank, the waste water contacts with the microbiological film adsorbed the filler and the organic materials of the waste water are degraded by microbios of the biological film. The problem of existence of the original aeration tank is solved in the invention, and effluent treatment capacity increases 25 %, water outlet dissolved oxygen and the concentration of sludge increases two-fold, load capacity increases another fold and the capacities of biochemical and shockproof are enhanced.

Description

1. Technical field: [0001] The invention relates to a method for treating petrochemical wastewater. 2. Background technology: [0002] At present, the method of treating petrochemical wastewater in my country is that the wastewater is neutralized in the neutralization tank first, and then enters the adjustment tank. The wastewater from the adjustment tank enters the grease trap to remove floating oil, and then enters the flotation tank for flotation. The wastewater that comes out enters the aeration tank for biochemical treatment, and finally is discharged through sand filtration. The main problem of this treatment method is that in the process of biochemical treatment in the aeration tank, only simple oxidation treatment is used, so that some areas inside the aeration zone are insufficiently oxygenated, sludge is easy to accumulate at the bottom of the tank, and the sludge reflux is not good, thereby reducing the sewage The treatment capacity and pollutant removal rate are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/40C02F3/02C02F3/10
CPCY02W10/10
Inventor 姚丽华
Owner 姚丽华