Solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment and preparation method thereof

A solid carbon source, sewage treatment technology, applied in water/sludge/sewage treatment, special compound water treatment, anaerobic digestion treatment, etc. , lignin is not easy to use and other problems, to achieve the effect of improving bioavailability, improving biodegradability, and improving degradability

Inactive Publication Date: 2020-07-03
宁波益可达新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Studies have shown that the abundant natural biomass materials contained in nature can be used as solid carbon sources for the denitrification process of microorganisms; however, the lignin in natural biomass materials is not easy to use, and the slow release of carbon sources from pure biomass materials is difficult to meet Treatment requirements of high concentration nitrate nitrogen sewage

Method used

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  • Solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment and preparation method thereof
  • Solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment and preparation method thereof

Examples

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preparation example Construction

[0036] A method for preparing a solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment, comprising the following steps:

[0037] Step 1. Mix PBS, bio-fermented bamboo powder, starch, water and silane coupling agent in a high-speed mixer according to a predetermined ratio;

[0038] Step 2. Add the mixed material into the twin-screw extruder, adjust the temperature to 110-130°C, banbury, melt, blend, and stir evenly; the banbury temperature is 110-130°C, and the time is 5-15 min.

[0039] Step 3, the blend is extruded through a twin-screw extruder, and the extruded product is water-cooled, crushed and granulated by a crusher, and dried.

[0040] The raw materials and reagents used in the examples are commercially available, or can be prepared by known methods.

Embodiment 1

[0042] Put 30 parts of PBS, 45 parts of biologically fermented bamboo powder, 20 parts of starch, 2 parts of water and 3 parts of KH-570 into a twin-screw extruder and stir evenly. The banburying temperature is 120 °C and the time is 15 min. , Extrude, cool the blend to room temperature, crush and granulate with a crusher.

Embodiment 2

[0044] Put 50 parts of PBS, 35 parts of biologically fermented bamboo powder, 10 parts of starch, 2 parts of water and 3 parts of KH-550 into a twin-screw extruder and stir evenly. , Extrude, cool the blend to room temperature, crush and granulate with a crusher.

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Abstract

The invention discloses a solid carbon source suitable for a high-concentration nitrate nitrogen sewage treatment. The solid carbon source comprises PBS, biologically fermented bamboo powder, starch,water and a silane coupling agent according to a ratio of (25-65): (30-50): (6-30): (1-4): (1-6). The preparation method comprises the following steps: step one, uniformly mixing PBS, biologically fermented bamboo powder, starch, water and a silane coupling agent in a high-speed mixer according to the set ratio; step two, adding the uniformly mixed materials into a twin-screw extruder, adjusting the temperature to 110-130 DEG C, carrying out internal mixing, melting, blending and uniformly stirring; and step three, extruding the blend by a twin-screw extruder, cooling the extrudate by water, crushing the extrudate, granulating the powder, and drying. The production cost of the solid carbon source is reduced, meanwhile, the biomass utilization rate is improved, and the waste of resources ismaximally reduced.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a solid carbon source suitable for high-concentration nitrate nitrogen sewage treatment and a preparation method thereof. Background technique [0002] In today's society, with the rapid development of economy and society and the improvement of living standards, nitrogen pollution caused by human activities is becoming more and more serious. Nitrogen pollution has become a global environmental problem and has had many adverse effects on aquatic animals and plants, human health and ecosystem stability. In order to minimize the adverse effects of nitrogen pollution, various new treatment technologies and processes have been continuously developed and improved to meet the increasingly stringent nitrogen emission standards. At present, biological denitrification technology is widely used. Compared with other denitrification technologies, biological denitrification technolog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/16
CPCC02F3/28C02F2101/16C02F2305/06
Inventor 杨忠臣李昊翔李若沛
Owner 宁波益可达新材料有限公司
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