Method for treating waste water from citric acid-production

A technology of citric acid wastewater and its treatment method, which is applied in natural water treatment, flotation water/sewage treatment, multi-stage water/sewage treatment, etc., can solve the problems of complex operation and poor treatment effect of citric acid wastewater, and achieve The effect of solving the shortage of water resources, good water quality and environmental protection

Inactive Publication Date: 2010-02-10
唐晓明
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Problems solved by technology

There are physical methods, chemical methods, anaerobic methods, and aerobic methods to treat citric acid wastewate

Method used

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  • Method for treating waste water from citric acid-production

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Embodiment Construction

[0008] The present invention adopts two-phase anaerobic-aerobic combined process, and the processing capacity is 1000m 3 / d, specifically divided into three stages:

[0009] (1) Wastewater physical treatment stage. The waste water flows through the grid tank, sedimentation adjustment tank, and air flotation tank to effectively remove insoluble suspended solids and reduce the load of subsequent biochemical treatment. The sedimentation tank adopts the reinforced concrete advection type, one, underground type, which has the function of heat preservation, and because of the uneven production drainage, it also has the function of regulating tank, and the hydraulic retention time is 8h; the air flotation tank adopts the reinforced concrete advection type, one, the ground type, placed On the basis of the platform, the sewage can flow into the anaerobic pool by gravity.

[0010] (2) Wastewater biochemical treatment stage. The wastewater after physical treatment is diluted 1:1 with ...

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Abstract

The invention discloses a method for treating waste water from citric acid-production, which belongs to the technical field of waste water treatment and particularly relates to a method for treating waste water from citric acid-production, which is simple in operation and good in treatment effect and ensures the effluent can be discharged out directly. The invention adopts a technical scheme that:the method adopts a two-phase anaerobic and aerobic combined process that waste water generated in production process enters a settling and adjusting tank and floataion tank from a gird tank to remove suspended matters, colloid matters and other pollutants from water; before entering a two-phase anaerobic reactor, sewage is diluted by clean water in a ratio of 1:1 and then quantitatively pumped into the two-phase anaerobic reactor to decompose and transform various complex organic matters in the waste water into micromolecular organic matters, methanes, carbon dioxides and other materials; nitrified waste water enters a delayed aeration tank to interact with aerobe in the sludge to remove residual organic matters; and part of suspended matters brought out by water settle in inclined-tubesedimentation tank and then the waste water reaching standards is discharged.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a treatment method for citric acid wastewater. Background technique [0002] Citric acid is an important organic compound, widely used in artificial beverages, food industry, pharmaceutical industry, chemical industry and washing industry, as an acidic flavoring agent for food and beverages, an antioxidant for edible oils, and a fortifier for adding calcium and iron ions , pharmaceutical raw materials, detergents for metal surfaces, and can also be used for cement coagulation, containing SO 2 Plasticizer for waste gas treatment and food packaging film, etc. In the process of producing citric acid, a large amount of waste water, waste gas and waste residue are discharged. If the waste water is discharged arbitrarily without treatment, it will pollute the water body, affect the survival of aquatic organisms, and pollute the environment. In the production process of c...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/52C02F1/24C02F11/12C02F103/36
Inventor 唐晓明
Owner 唐晓明
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