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Assistant wastewater treatment process

A technology for wastewater treatment and additives, which is used in special compound water treatment, oxidized water/sewage treatment, water/sewage multi-stage treatment, etc. Effect

Active Publication Date: 2019-10-29
福泉环保城发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the performance of wet oxidation depends heavily on the catalytic performance of the catalyst. The auxiliary wastewater contains unique biochemical substances. At present, there is no high-efficiency catalyst for the tubular free radical oxidation of auxiliary wastewater, so it is urgent to research and develop A catalyst for tubular free radical oxidation of auxiliary wastewater

Method used

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Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 Shown is the tubular continuous reaction device of the present invention. The device includes a filter 1, a sewage buffer tank 2, a sewage pump 3, a free radical generator 4, an air compressor 5, an air buffer tank 6, and an air flow meter 7. , Heat exchanger 8, high-pressure separation tank 9, liquid storage tank 10, the air compressor 5 is connected to the inlet of the air pressure buffer tank 6, and the air buffer tank 6 communicates with free radicals through a pipeline provided with an air flow meter 7 The generator 4 is connected, the filter 1 is connected with the sewage buffer tank 2 through a pipeline, the sewage buffer tank 2, the sewage pump 3 and the free radical generator 4 are connected in sequence, and the free radical generator 4 inlet is provided with a heat exchanger for 8 The reactor discharge stream and the feed stream exchange heat, the outlet of the free radical generator 4 is connected to a high-pressure separation tank 9 through a...

Embodiment 2

[0037] Preparation of catalyst A:

[0038] 1) Weigh 261g of ruthenium chloride trihydrate dissolved in 10L of deionized water to form solution A;

[0039] 2) Weigh 1Kg of coconut shell activated carbon and place it in a muffle furnace at 100°C for high temperature activation for a period of time, and cool to room temperature to obtain activated carrier B;

[0040] 3) Add 500g of activated carrier B to 2L of solution A and soak for 5 hours, and filter to obtain catalyst precursor C;

[0041] 4) The precursor C was dried at 80° C. for 5 hours, and then calcined at 800° C. for 8 hours to obtain catalyst A. After detection and analysis, the loading amount of ruthenium was 0.21 wt%.

Embodiment 3

[0043] Preparation of catalyst B:

[0044] 1) Weigh 250g of manganese nitrate and dissolve it in 5L of deionized water, then add 150mL of 30% hydrogen peroxide, and react at 30°C for 1 hour to obtain reaction solution A;

[0045] 2) Add 1Kg of ZSM-5 molecular sieve to reaction solution A, soak for 5 hours, filter, and dry to obtain catalyst precursor A;

[0046] 3) Weigh 26g of cobalt chloride and 272g of zinc chloride to dissolve in 5L of deionized water to obtain solution B, and place precursor A in solution B for total immersion for 5 hours to obtain catalytic precursor B;

[0047] 4) Dry the catalyst precursor B at 80°C for 3 hours, then put it in a muffle furnace and calcinate at 600°C for 8 hours to obtain catalyst B. After detection and analysis, the content of the catalyst active component Mn is 1.12wt %, the content of Co is 0.12wt%, and the content of zinc is 2.08wt%.

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Abstract

The invention provides an assistant wastewater treatment process. A tubular continuous reaction device is adopted, the device includes a filter, a sewage buffer tank, a sewage pump, a free radical generator, an air compressor, an air buffer tank, an air flow meter, a heat exchanger, a high-pressure separation tank and a liquid storage tank, the sewage flow is controlled by using a composite catalyst and monitoring the sewage concentration by arranging a sewage concentration detection device, the tubular free radical oxidation effect of assistant wastewater is guaranteed, the catalytic effect can still be guaranteed when the process is applied to the assistant wastewater with a wide range of concentration fluctuation, continuous operation for 100 hours is conducted, the average removal rateof CODcr is 95% or above, and BOD5 / CODcr after treatment is greater than 0.6.

Description

Technical field [0001] The invention relates to the field of sewage treatment, in particular to an auxiliary wastewater treatment process. Background technique [0002] Auxiliary wastewater is a kind of high-concentration organic wastewater that is difficult to degrade. High-concentration organic wastewater has the characteristics of high pollutant content, high toxicity, scattered discharge points, and low water volume. It will cause serious water pollution, deterioration of the ecological environment and threaten human health. Physical treatment can be used as a pretreatment method for subsequent biochemical treatment to reduce suspended solids in water and reduce biological inhibitory substances in wastewater. The main components of the wastewater are piperidone compounds, and the main characteristics of auxiliary wastewater: high chroma, high COD, non-biochemical, and large changes in pollutant concentration. At present, the main treatment methods are incineration and physic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04B01J23/46B01J29/48C02F101/30
CPCC02F1/001C02F1/72B01J23/462B01J29/48C02F2101/30C02F2305/023B01J2229/18
Inventor 周春松贾建洪余云丰
Owner 福泉环保城发展有限公司
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