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Method for deeply treating papermaking wastewater

A paper-making sewage and advanced treatment technology, which is applied in the direction of energy wastewater treatment, processing wastewater treatment, aerobic and anaerobic process treatment, etc., can solve the problems of no development prospects, short life, serious secondary pollution, etc., and achieve low Effects of cost and resource recycling, low power consumption, and high disposal rate

Inactive Publication Date: 2009-06-03
中冶纸业集团有限公司
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Problems solved by technology

However, after this life cycle is exceeded, the activated carbon system will fail due to adsorption saturation and failure to acidify and regenerate in time, and the treatment effect will drop sharply. Compared with the chemical addition method, this method not only has a shorter life span but also has higher treatment costs, so it is not an ideal process path.
Strong oxidation decolorization adopts the method of acid analysis, which not only has high treatment costs, serious secondary pollution, occupies a large area of ​​land, but also limits the amount of sewage to be treated, and has no development prospects

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  • Method for deeply treating papermaking wastewater

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Embodiment Construction

[0014] In the desert wasteland, according to the requirements of purification function and wastewater treatment volume, design and construct four-level oxidation ponds of corresponding capacity, specifically the first-level anaerobic pond, the second-level facultative pond, the third-level aerobic pond and the fourth-level aerated aquatic biological oxidation Pond, where

[0015] (1) Primary anaerobic pond

[0016] The anaerobic pond is suitable for the treatment of high-concentration organic wastewater. The average water depth is designed to be 5.5-7.5m and the storage capacity is 2.63 million cubic meters. A scum layer is formed on the surface of the pond. The dissolved oxygen in the pond water is extremely low. There is almost no algae growth in the pond. The organic matter is decomposed into CH by anaerobic microorganism activities. 4 (Carbon) and CO 2 .

[0017] Table 1 Design parameters of anaerobic pond

[0018] name parameter Remarks Average water depth i...

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Abstract

The invention relates to a method for deeply treating papermaking wastewater. The invention comprises the following steps: conducting anaerobic treatment, facultative treatment and aerobic treatment to papermaking waste water which reaches standard after alkali recovery and middle part water treatment and is distributed in a multistage oxidation pond treatment unit through manual redeploy; and leading the treated water to a manual ground bed with certain area, certain gradient and certain size designed according to treatment load requirements by a corresponding drainage and irrigation system after the water achieves primary treatment effect. the invention establishes a typical model of 'lagoon-constructed wetlands', creates a new technique of papermaking waste water ecologic treatment bases on low power consumption, low cost and high elimination rate, and enables that large amount of rough purified middle part papermaking waste water of papermaking enterprises after alkali recovery and middle part water treatment truly realizes the aims of safe and efficient treatment and resource cyclic utilization.

Description

Technical field [0001] The invention belongs to the technical field of sewage treatment, and particularly relates to a method for advanced treatment of papermaking sewage. Background technique [0002] At present, there are mainly three mature technical routes for advanced treatment of papermaking wastewater at home and abroad: one is strong oxidation and decolorization, the other is large doses of coagulation and flocculation agents, and the third is activated carbon adsorption. From the survey results, the above-mentioned three methods are very unsatisfactory. Take China Metallurgical Yinhe in Shandong Province as an example. The plant adopts the method of adding coagulation and flocculation agents in large doses. In order to achieve the new national standard, the dosage is continuously increased, which not only increases the cost of sewage treatment per ton to more than 4 yuan. , And the amount of sludge produced has doubled (converted from drugs) than before, and it has becom...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/30C02F103/28
CPCY02W10/37
Inventor 刘崇喜夏春林林广学李红亮
Owner 中冶纸业集团有限公司
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