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High-concentration organic wastewater direct deep purification method

A technology for deep purification of organic wastewater, applied in chemical instruments and methods, temperature condition water treatment, reflux water treatment, etc., can solve inappropriate problems

Active Publication Date: 2017-01-11
JIANGXI GAIA ENVIRONMENTAL SCI & TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

For example, livestock and poultry breeding wastewater pollution, which accounts for more than 80% of agricultural pollution sources, is a typical organic wastewater pollution with high COD and high ammonia nitrogen. However, it is obviously inappropriate to use industrial pollution control methods in this low-value-added agricultural economy. Therefore, we provide A technology that combines physical and chemical methods with biological treatment methods that can meet treatment standards and operate stably at low cost has become a technical problem that those skilled in the art need to solve urgently

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Embodiment Construction

[0031] A method for direct deep purification of high-concentration organic wastewater, comprising the following steps:

[0032] (1) Enhanced precipitation treatment: including dosing coagulation unit, coagulant includes polyaluminum chloride, polyferrous sulfate; dosing flocculation unit, flocculant includes cationic polyacrylamide, anionic polyacrylamide, non-ionic polypropylene Amide; physical precipitation unit, through the compression double layers of chemical agents, adsorption neutralization, adsorption bridging, sediment net capture and other mechanisms, the fine suspended particles and colloidal ions in water are destabilized, aggregated, flocculated, coagulated, and precipitated . The present invention generally selects partition flocculation tanks, mechanical flocculation tanks, folding plate flocculation tanks, and grid flocculation tanks.

[0033] a. Partition flocculation tank: ①The flocculation time is generally selected to be 20-30min; ②The flow velocity of the...

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Abstract

The invention relates to a high-concentration organic wastewater direct deep purification method. The method specifically comprises the following steps: (1) reinforced precipitation treatment; (2) rapid filtration of suspended matter precipitates; (3) pH value regulation; (4) hydrolysis and acidification: wastewater with the regulated pH value enters a water distribution unit, and a biofilm colonization packing material is arranged in the water distribution unit to reinforce the anaerobic hydrolysis and acidification effect of the wastewater; and (5) biological filter bed treatment. By providing a combined process composed of constructing a water distribution bed, an air distribution bed and an air-water backwashing bed of a biological filter bed, arranging a biological filter bed temperature regulation and control system, and combining the biological filter bed with a reinforced precipitation unit, a suspended matter precipitate rapid filtration unit and other units, the invention proposes a rapid low-cost treatment method for high-concentration high ammonia-nitrogen organic wastewater.

Description

technical field [0001] The invention relates to the technical field of ecology and environmental protection, in particular to a method for direct deep purification of high-concentration organic wastewater. Background technique [0002] High-concentration organic wastewater generally refers to wastewater discharged from livestock and poultry breeding, landfill leachate, papermaking, leather, and food industries with a COD concentration of more than 2000 mg / l or even tens of thousands or hundreds of thousands, and an ammonia nitrogen concentration of more than 1000 mg / l. These wastewaters contain a large amount of organic matter such as carbohydrates, fats, proteins, cellulose, etc., and the composition is complex. Extremely high, severe odor, pungent stench, if discharged directly, it will have a huge impact on the surrounding environment. [0003] According to different treatment principles, it can be divided into three categories of treatment methods: physical and chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F9/00C02F2001/007C02F3/30C02F1/5236C02F1/56C02F1/66C02F1/001C02F3/04C02F1/52Y02W10/10C02F2301/04C02F2301/10
Inventor 柴喜林王世君
Owner JIANGXI GAIA ENVIRONMENTAL SCI & TECH CO LTD
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