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Municipal wastewater purification treatment method

A technology for purification and treatment of urban domestic sewage, applied in the directions of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Complicated steps and other problems, to achieve the effect of high processing load, low oxygen consumption and return flow, and improve transportation efficiency

Active Publication Date: 2014-04-30
山东飞洋环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the processes currently used in my country's sewage treatment plants are based on the traditional theory of nitrogen and phosphorus removal, which has inherent shortcomings, and it is difficult to achieve Class A standard treatment and discharge
[0005] Some of the more advanced urban sewage treatment processes in the prior art have complicated steps, serious energy consumption, and foul odors all over the sewage plant. Although the removal effect of pollutants can meet the requirements of national standards, it still cannot satisfy people's sensory perception of sewage. processing request

Method used

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  • Municipal wastewater purification treatment method

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Effect test

Embodiment 1

[0027] A purification treatment method for urban domestic sewage, characterized in that it includes a pretreatment step, a biological reaction step, a filtration step, a sterilizing step and an adsorption step carried out in sequence; wherein,

[0028] The pre-treatment steps include: the water inlet of the sewage storage tank is connected to the source pipeline of urban domestic sewage, the sewage is temporarily stored in the sewage storage tank, and the outlet pipeline of the sewage storage tank is connected to the pre-treatment system. The pre-treatment system includes a grit chamber and In the coarse filter tank, the sewage first enters the grit chamber to settle the sediment, and the sediment is discharged into the collection pit, and the sewage passing through the grit chamber enters the coarse filter tank, and the coarse filter tank is equipped with a rotary grille to collect suspended solids in the sewage The sewage at the water outlet of the pretreatment system enters ...

Embodiment 2

[0036] Preparation of Phosphorous Modified Mordenite

[0037] (1) Preparation of mordenite:

[0038] Mix 30g of hexadecyldimethylethylammonium bromide with 200g of deionized water, and heat in a constant temperature water bath at 58°C for 4 hours to obtain a template solution;

[0039] Take 50g of diaspore and 1L of sodium hydroxide solution with a concentration of 2mol / L and stir them evenly, then put them into the hydrothermal reaction kettle, keep the hydrothermal reaction kettle at 230°C for 1h, take it out, and then put the alkali-treated monohydric Add 1.5 L of hydrochloric acid with a concentration of 2 mol / L to the durasite and stir for 4 hours to react, then filter, and take the filtrate to obtain the aluminum source solution;

[0040] Take 60g of quartz and 1L of sodium hydroxide solution with a concentration of 5mol / L and mix them evenly, then place them in a hydrothermal reactor, keep the hydrothermal reactor at 260°C for 12h, cool and filter, and take the filtrat...

Embodiment 3

[0045] A purification treatment method for urban domestic sewage, characterized in that it includes a pretreatment step, a biological reaction step, a filtration step, a sterilizing step and an adsorption step carried out in sequence; wherein,

[0046] The pre-treatment steps include: the water inlet of the sewage storage tank is connected to the source pipeline of urban domestic sewage, the sewage is temporarily stored in the sewage storage tank, and the outlet pipeline of the sewage storage tank is connected to the pre-treatment system. The pre-treatment system includes a grit chamber and In the coarse filter tank, the sewage first enters the grit chamber to settle the sediment, and the sediment is discharged into the collection pit, and the sewage passing through the grit chamber enters the coarse filter tank, and the coarse filter tank is equipped with a rotary grille to collect suspended solids in the sewage The sewage at the water outlet of the pretreatment system enters ...

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Abstract

The invention discloses a municipal wastewater purification treatment method which comprises a pretreatment step, a bioreaction step, a filtration step, a sterilization step and an adsorption step which are carried out in sequence, wherein in the pretreatment step, gravel and large-sized floating objects can be removed and a stable water source is provided for subsequent treatment; in the bioreaction step, municipal wastewater is removed in low-carbon and high-efficiency manners, the treatment load is high, the treatment effect is good, organic and inorganic carbon sources do no need to be additionally added, and the oxygen consumption and the reflux quantity are low; in the filtration step, small particles and suspended matters in the wastewater are further removed; in the sterilization step, harmful organisms such as bacteria and viruses in the wastewater are killed; in the adsorption step, calcium magnesium ions, fluorine ions and other heavy metal ions in the wastewater can be efficiently removed. Purified product water from which pollutants are basically removed is stable in water quality, and the water quality is superior to the national standard A.

Description

technical field [0001] The invention belongs to the field of urban sewage treatment and environmental protection, and in particular relates to a purification treatment method for urban domestic sewage. Background technique [0002] At present, my country's water resources are seriously scarce, and the water treatment industry pays more and more attention to the sewage generated in human production and life. How to save water and achieve efficient and safe recycling of water resources to alleviate the increasingly tense water pressure in cities has become a serious problem faced by the environmental protection community. [0003] The proportion of groundwater exploited in Beijing and surrounding areas is as high as 72%, which has far exceeded the international warning line of 30-40% water resource utilization rate. In order to comprehensively enhance the city's sustainable development capability, the national "Tenth Five-Year Plan" environmental protection plan clearly stipu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
Inventor 王春爱
Owner 山东飞洋环境工程有限公司
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