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An integrated technology of papermaking wastewater advanced treatment and safe ecological utilization based on toxicity reduction

A papermaking wastewater and advanced treatment technology, which is applied in the process of wastewater treatment, water/sewage treatment, water treatment parameter control, etc. To reduce COD and biological acute toxicity, reduce chronic toxicity, and improve the treatment level

Active Publication Date: 2019-05-17
NANJING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It solves the problem that papermaking wastewater has high concentration of organic matter, complex components, and certain biological toxicity effects, and it is difficult for conventional or single water treatment technology to realize the discharge and safe ecological utilization of papermaking wastewater

Method used

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  • An integrated technology of papermaking wastewater advanced treatment and safe ecological utilization based on toxicity reduction
  • An integrated technology of papermaking wastewater advanced treatment and safe ecological utilization based on toxicity reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Wastewater treatment of a recycled paper production enterprise

[0017] The papermaking wastewater of a certain recycled paper production enterprise is treated with the method of the present invention. After the treatment, the COD and ammonia nitrogen indicators can reach the surface water III-IV standard, the acute toxicity of luminescent bacteria and zebrafish is basically eliminated, and the genotoxicity is greatly reduced ( Water quality data are shown in Table 1).

[0018] Table 1-Water quality data of wastewater treatment in a recycled paper production enterprise

[0019]

Embodiment 2

[0020] Example 2: Wastewater Treatment of a Straw Pulp Papermaking Enterprise

[0021] The papermaking wastewater of a straw pulp and papermaking enterprise is treated with the method of the present invention. After the treatment, the COD and ammonia nitrogen indicators can reach the surface water III-IV standard, the acute toxicity of luminescent bacteria and zebrafish is basically eliminated, and the genotoxicity is greatly reduced ( Water quality data are shown in Table 2).

[0022] Table 2-Water quality data of wastewater treatment in a straw pulp and paper making enterprise

[0023]

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Abstract

The invention discloses a papermaking waste water deep processing and safe ecological utilization integrated technology based on toxicity reduction. The technology comprises the following steps: 1) processing by an internal circulation anaerobic reactor; 2) processing by a Fenton fluidized bed; and 3) purifying by constructed wetland: papermaking tail water flows the surface-flow constructed wetland and then is processed, then is introduced into a next vertical-flow constructed wetland , then is introduced into a water plant pool for purification, and finally, the water can be taken as a landscape reclaimed water for reuse to obtain the receiving water. According to the different technical advantages and characteristics of the internal circulation anaerobic reactor, the Fenton fluidized bed and the constructed wetland, scientific combination and design can be carried out, and a papermaking waste water deep processing and safe ecological utilization integrated technology capable of effectively reducing toxicity is formed. The method solves the problem of difficult realization of papermaking waste water up-to-standard discharge and safe ecological utilization in a conventional or single water treatment technology.

Description

technical field [0001] The invention relates to the technical field of waste water treatment, in particular to a combined technology integrating an internal circulation anaerobic (IC) reactor, a Fenton fluidized bed and a constructed wetland, which can not only effectively reduce conventional pollution such as COD and ammonia nitrogen in papermaking waste water It can significantly reduce the biological toxicity effect of tail water and realize the safe and ecological utilization of drainage. Background technique [0002] In recent years, my country's paper industry has developed rapidly. Statistics show that in 2013 my country's paper and cardboard production has reached 101.1 million tons. However, the problem of water pollution in my country caused by the paper industry has become increasingly prominent. According to the 2013 survey and statistics, among the 41 industrial industries, the chemical oxygen demand (COD) emission of the papermaking and paper products industr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F101/30C02F103/28
CPCC02F1/725C02F3/28C02F3/32C02F9/00C02F2101/30C02F2103/28C02F2209/08C02F2209/14
Inventor 谢显传秦龙黄玉孙捷李爱民安树青买文宁
Owner NANJING UNIV
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