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Method for improving denitrification efficiency of pig raising wastewater

A technology for denitrification efficiency and wastewater, applied in chemical instruments and methods, animal husbandry wastewater treatment, water pollutants, etc., can solve the problem of high cost of denitrification of pig wastewater, improve denitrification efficiency, and achieve considerable social and economic benefits. Effect

Pending Publication Date: 2020-11-06
WENZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the deficiencies of the background technology, the present invention provides a method for improving the denitrification efficiency of pig raising wastewater, which mainly solves the problem of high denitrification cost of pig raising wastewater

Method used

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  • Method for improving denitrification efficiency of pig raising wastewater
  • Method for improving denitrification efficiency of pig raising wastewater
  • Method for improving denitrification efficiency of pig raising wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Step 1. After crushing the chaff and drying it naturally, add water to the anaerobic reactor at a solid-to-liquid ratio of 10% (v / v); after inoculation, adjust to pH 6 and ferment at room temperature for 20 days;

[0030] Step 2, after the fermentation is finished, remove the solid residue by vacuum filtration, and let the obtained liquid organic matter stand still at room temperature for 30 minutes, and after vacuum filtration again, seal it for later use at room temperature;

[0031] Step 3, adding the above-mentioned liquid organic matter into the SBR reactor for treating pig wastewater.

Embodiment 2

[0033] Step 1. After crushing the chaff and drying it naturally, add water to the anaerobic reactor at a solid-to-liquid ratio of 30% (v / v); after inoculation, adjust the pH to 8 and ferment at room temperature for 40 days;

[0034] Step 2. After the fermentation is finished, remove the solid residue by vacuum filtration, and place the obtained liquid organic matter at room temperature for 60 minutes. After vacuum filtration again, seal it for later use at room temperature;

[0035] Step 3, adding the above-mentioned liquid organic matter into the SBR reactor for treating pig wastewater.

Embodiment 3

[0037] Step 1. After crushing the fungus chaff and drying it naturally, add water to the anaerobic reactor at a solid-to-liquid ratio of 20% (v / v); after inoculation, adjust the pH to 7 and ferment at room temperature for 30 days;

[0038] Step 2. After the fermentation is finished, remove the solid residue by vacuum filtration, and let the obtained liquid organic matter stand still at room temperature for 45 minutes. After vacuum filtration again, seal it for later use at room temperature;

[0039] Step 3, adding the above-mentioned liquid organic matter into the SBR reactor for treating pig wastewater.

[0040] Table 1 and Table 2 are the trace elements and organic acid components contained in the anaerobic fermentation broth of fungus chaff respectively. From the perspective of trace elements, magnesium is an activator of many enzymes; iron is a cofactor of cytochrome cd1-type nitrite reductase; copper plays an important role in the process of building the active center of ...

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Abstract

The invention discloses a method for improving denitrification efficiency of pig raising wastewater, and mainly solves the problem of high denitrification cost of pig raising wastewater at present. The method is characterized by comprising the following steps: 1, crushing mushroom bran, naturally air-drying, and adding the crushed mushroom bran and water into an anaerobic reactor according to a solid-to-liquid ratio of 10-30% (v / v); adjusting the pH value to 6-8 after inoculation, and fermenting at room temperature for 20-40 days; 2, after the fermentation is finished, performing vacuum filtration to remove solid residues, standing the obtained liquid organic matter at room temperature for 30-60 minutes, performing vacuum filtration again, and sealing at room temperature for later use; andstep 3, adding the liquid organic matter into an SBR reactor for treating pig raising wastewater. According to the method for rapidly improving the denitrification efficiency of the pig raising wastewater by utilizing the fungus chaff, waste is completely used for treating waste, effluent can well meet related standard requirements, and considerable social and economic benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, and in particular relates to a method for improving the denitrification efficiency of pig raising waste water. Background technique [0002] With the development of the pig industry in the direction of scale, the concentrated discharge of pig wastewater is increasing, which poses a serious threat to the environment. Whether it is dry-cleaned manure pig wastewater or blistered manure pig wastewater pretreated by solid-liquid separation, they all have the characteristics of high ammonia nitrogen and low C / N ratio. How to achieve effective denitrification while efficiently removing ammonia nitrogen Key points and difficulties of pig wastewater treatment. Although a variety of treatment processes have been developed for this special water quality, and all of them have achieved good practical results, they all face a common problem without exception: relatively high operating costs, of ...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F103/20C02F101/16
CPCC02F3/301C02F2103/20C02F2101/16C02F2203/006C02F2305/06C02F2209/08C02F2209/14C02F2209/16
Inventor 杨云龙肖继波褚淑祎孙淑静胡开辉孙书千林而舒
Owner WENZHOU UNIVERSITY
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