Method for purifying oil-containing waste water of catering and complete equipment thereof

A wastewater purification and treatment method technology, applied in the field of water treatment, can solve the problems of low treatment efficiency, troublesome membrane cleaning, large floor area, etc., and achieve the effect of saving maintenance costs, saving operating costs, and saving space

Active Publication Date: 2010-02-10
上海青溪环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that the treatment capacity is small, the wastewater needs to be strictly pretreated, and the cleaning of the membrane is also troublesome.
Although the physical method, physicochemical method and chemical method have the advantages of short process and simple facilities, the treatment efficiency is not high; and when the influent water quality changes drastically, the effluent water quality also fluctuates, so the general physical and chemical method is only used as pretreatment. Finally, advanced treatment is required to meet the discharge standards; biological treatment has the advantages of high treatment efficiency and strong impact load resistance, but due to its large footprint and high operating costs, it is difficult to popularize and use it in the urban catering industry
Throughout the various existing catering oily wastewater treatment methods, there are more or less problems in terms of economy, energy consumption and treatment effect.

Method used

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  • Method for purifying oil-containing waste water of catering and complete equipment thereof
  • Method for purifying oil-containing waste water of catering and complete equipment thereof
  • Method for purifying oil-containing waste water of catering and complete equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The sources of the oily wastewater used in this example are: kitchen wastewater from hotels, hotels, canteens, holiday villages, scenic spots, and residential buildings; the impurities contained therein mainly include: food fiber, starch, animals and plants Fats, seasonings of all kinds, detergents and proteins.

[0060] figure 1 It is a flow chart of the method for purification and treatment of oily wastewater from catering in this embodiment.

[0061] figure 2 It is a structural diagram of the complete set of equipment for purification and treatment of catering oily wastewater in this embodiment. The complete set of equipment for the treatment method of catering wastewater includes: dosing pool 1, reaction pool 2, air flotation biochemical pool 3, improved biological filter 4, clear water Pool 5, grease trap 6 and grille pool 10; wherein, the inside of grille pool 10 is provided with grille 13, and one side of grille pool 10 is provided with water inlet pipe 7, and...

Embodiment 2

[0084] The source of the catering oily wastewater used in this example and the impurities contained therein are the same as those in Example 1.

[0085] The method flow of purification treatment is:

[0086] 1) Mechanical oil separation: the oily waste water from food and beverages passes through the grid to remove suspended solids and impurities in the oily waste water, and then enters the grease trap for mechanical oil separation;

[0087] 2) Suspended matter coagulation treatment: the effluent after mechanical oil pollution separation enters the reaction tank, and the coagulant aluminum sulfate is added in the tank according to the dosing amount of 50mg / L, and after mechanical stirring, it enters the reaction tank and stays for 5 minutes to make the water body Most of the suspended solids and colloids form flocs, which is beneficial to the subsequent solid-liquid separation;

[0088] 3) Air flotation biochemical treatment: After the effluent after coagulation treatment com...

Embodiment 3

[0098] The components and proportions of the biological filter material in step 6) are: 30% of quartz sand; 30% of activated carbon; 40% of zeolite molecular sieve, and other processing steps are the same as in Example 1.

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Abstract

The invention belongs to the technical field of water processing, and in particular relates to a method for purifying oil-containing waste water of catering and complete equipment thereof. The methodcomprises the following steps: mechanical-type oil-dirt separation, coagulation treatment of suspended substances, air floatation biochemical treatment, and biological filtration and sterilization. Compared with the prior art, the method of the invention has the characteristics of high removal efficiency, simple equipment, low running cost, convenient operation, management and maintenance, and caneffectively remove large amount of organic substances and grease in the waste water, the mmonian and chroma of the waste water, and the like, and enables every outlet water index to satisfy the requirement of recycle water.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method and a complete set of equipment for purifying and treating oily wastewater from catering. Background technique [0002] In recent years, my country's catering industry has developed vigorously, and the proportion of the entire industry in the national economy has grown rapidly to an annual operating income of over 100 billion yuan. It has grown into an important force that cannot be ignored in my country's economic development. However, with the development of cities and urbanization, the scale and number of hotels, hotels, and canteens are increasing day by day, and the resulting amount of catering wastewater is increasing. According to incomplete statistics, the untreated waste water discharged by the catering industry in my country every year The amount of waste water reaches hundreds of millions of tons, and there is a growing trend. According to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/40C02F1/52C02F1/50C02F3/12C02F3/10
CPCY02W10/10
Inventor 徐远雄陈慧佳
Owner 上海青溪环保科技有限公司
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