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Wastewater treatment system

A wastewater treatment system and water outlet technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high moisture content of sludge, large floor area, long treatment process, etc. problems, to achieve the effect of cleaning the treatment process, improving the treatment efficiency and improving the treatment effect

Inactive Publication Date: 2014-02-26
SUZHOU UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these combined processes not only have specific problems such as long treatment process, large floor space, and high operating costs; at the same time, a large amount of sludge will be generated during the treatment process.
These sludges have high moisture content and high treatment costs, especially for sludge containing Class I pollutants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Analysis of the treatment effect of the effluent after biochemical treatment of oil refinery wastewater.

[0033] Refining wastewater is refractory wastewater. The refining process consumes a lot of water, and the water quality of the discharged wastewater is complex and highly volatile. Using the above-mentioned wastewater treatment system 10 with a treatment capacity of 60 L / h, a 30-day on-site continuous operation test was carried out on the biochemical discharge water of an oil refinery wastewater. The results show that: when the influent water quality index COD fluctuates between 80.0-360mg / L, the average value is 220mg / L; when the ammonia nitrogen concentration is around 40.0mg / L, the control reaction time is 20min, and the COD of the system effluent after the reaction is lower than 50mg / L, the average removal rate can reach 80.1%; the concentration of ammonia nitrogen in the effluent is lower than 4mg / L, and the removal rate of ammonia nitrogen reaches more than ...

Embodiment 2

[0035] Analysis of the treatment effect of printing and dyeing wastewater after biochemical treatment.

[0036] The printing and dyeing industry consumes a lot of water, the water quality is complicated, and the concentration of pollutants fluctuates greatly. Using the above-mentioned wastewater treatment system 10 with a treatment capacity of 60 L / h, a 3-week on-site continuous operation test was carried out on the discharged water after biochemical treatment of printing and dyeing wastewater. The main water quality indicators of the experimental water are: the COD fluctuation of the influent water quality index is between 80-120mg / L, and the average value is 100mg / L; the chroma is 40-80, and the average value is 60. The reaction time was controlled at 20 min during the experiment. The effluent results show that the average COD removal rate of the device can still reach 60%, the effluent COD is lower than 50mg / L, and the chroma removal rate is close to 100%; the average slud...

Embodiment 3

[0038] Analysis of the advanced treatment effect of effluent after biochemical treatment of domestic wastewater.

[0039] The production of domestic wastewater has now exceeded the discharge of industrial wastewater, becoming the main source of wastewater in my country's wastewater treatment industry, and it is also the most important potential water source in the field of reuse in the future. According to the current domestic sewage discharge standards in our country, the COD of the treated discharge water is required to be lower than the standard of 50 or 60mg / L. In the Taihu Lake Basin in Jiangsu Province, COD is required to be lower than 50, and ammonia nitrogen is lower than 5 or 8mg / L. But this standard is for some old sewage treatment plants, the COD requirement is lower than 80 or 120mg / L in the process design, and there is no standard requirement for ammonia nitrogen. Therefore, this technology is suitable for the technical transformation of old sewage treatment plan...

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Abstract

The invention provides a wastewater treatment system, which comprises a reaction tank body, an electrolysis device, an electrolysis air supply system, a catalytic material and a separation net, wherein the reaction tank body comprises a water inlet and a water outlet; the water inlet and the water outlet are formed at upper ends of two opposite side walls of the reaction tank body respectively; the electrolysis device comprises a positive plate, a negative plate and a power supply; the positive plate and the negative plate are arranged in the reaction tank body; the power supply is electrically connected to the positive plate and the negative plate; the electrolysis air supply system comprises an aeration pipe and an air pump; the aeration pipe is arranged at the bottom of the reaction tank body; the catalytic material is filled in the reaction tank body and is transition metal loaded carbon base or silicon dioxide base particles; and the separation net is arranged at the water outlet. The wastewater treatment system has the advantages of high efficiency, cleanness in a treatment process and no or less sludge production.

Description

technical field [0001] The invention belongs to the field of waste water purification, in particular to a waste water advanced treatment system. Background technique [0002] Saving resources and protecting the environment is a basic national policy of our country. During the "Twelfth Five-Year Plan" period, the national urban sewage treatment recycling rate will reach the target of 10%, and more than 7 billion m of fresh water resources can be saved every year. 3 , which can effectively alleviate the problem of water shortage in my country, especially in arid areas, so wastewater reuse has important practical significance. [0003] At present, the total sewage discharge in the country is more than 70 billion tons, and the national recycled water consumption is only 1.66 billion m 3 , accounting for only 2% of the national waste / sewage discharge, which is far from the goal of 10%. Therefore, to achieve this goal not only depends on macro-control factors such as the guidan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/461
Inventor 刘德启刘帅畅如
Owner SUZHOU UNIV
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