Treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river sediment

A technology of river sediment and treatment method, applied in sludge treatment, electrochemical sludge treatment, water/sludge/sewage treatment, etc., can solve problems such as large side effects, low efficiency, and large amount of engineering.

Inactive Publication Date: 2019-04-12
博域环保技术研究院(南京)有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are problems such as high cost, large engineering volume, lar

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  • Treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river sediment
  • Treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river sediment
  • Treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river sediment

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[0019] The present invention can be better understood from the following examples.

[0020] The structures, proportions, sizes, etc. shown in the accompanying drawings of the description are only used to match the content disclosed in the description, for those who are familiar with the technology to understand and read, and are not used to limit the conditions for the implementation of the present invention, so there is no Technically, any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of the technical content disclosed in the present invention without affecting the functions and objectives of the present invention. within the range that can be covered. At the same time, terms such as "upper", "lower", "front", "rear", and "middle" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. , the change or adjustment of its relat...

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Abstract

The invention discloses a treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river sediment. Two or more counter electrodes are inserted into river sedimentat the same time, and the sediment is electrolyzed by using a direct current voltage stabilized power supply. The anode of at least one counter electrode is a magnesium-aluminum alloy net, and the anode of the other counter electrode is an iridium-ruthenium plated titanium net. The combined electrode is used for denitrification and phosphorus fixation of sediment. The magnesium-aluminum alloy as the anode releases magnesium ions to be combined with phosphate and ammonium salt in the sediment to form bird droppings and other precipitations, phosphorus and nitrogen are fixed in the sediment, andthe purpose of removing nitrogen and phosphorus from overlying water is achieved. When the iridium-ruthenium plated titanium net serves as the anode, electrolytic water releases a large amount of oxygen, the dissolved oxygen in the water body is significantly improved, and thus the overlying water quality and the habitat conditions of the sediment are improved.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to a treatment method for electrolytic denitrification and phosphorus fixation of heavily polluted river bottom mud. Background technique [0002] Heavily polluted rivers are mainly caused by external pollution continuously entering the river, resulting in the river's pollution-holding capacity being greater than its self-purification capacity. The river water is seriously polluted, and the dissolved oxygen is almost zero. River sediment is the "source" and "sink" of pollutants in the water body. A large amount of nitrogen and phosphorus are deposited in the bottom mud, and high-concentration nutrients migrate to the overlying water body through the activities of benthic organisms, the diffusion of concentration differences, and changes in the flow regime of river channels. The release of nitrogen, phosphorus and nutrients in the bottom mud causes Secondary pollution of water bodie...

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Application Information

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IPC IPC(8): C02F11/00
CPCC02F11/006
Inventor 杨柳燕李三姗王国红戈炜焜郑超群任丽曼王梦梦
Owner 博域环保技术研究院(南京)有限公司
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