Composite flocculant for pig farm wastewater and biological fermentation treatment method and equipment

A composite flocculant and pig farm wastewater technology, which is applied in animal husbandry wastewater treatment, flocculation/sedimentation water/sewage treatment, water/sewage treatment, etc., can solve problems such as limited use, high treatment cost, and secondary pollution. Achieve the effects of reducing usage, increasing fermentation speed and saving energy

Active Publication Date: 2017-12-08
SHANDONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In order to overcome the technical defects that the existing composite flocculant is easy to cause secondary pollution, high treatment cost and limited use when treating pig farm wastewater, a composite flocculant for pig farm wastewater is provided

Method used

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  • Composite flocculant for pig farm wastewater and biological fermentation treatment method and equipment
  • Composite flocculant for pig farm wastewater and biological fermentation treatment method and equipment
  • Composite flocculant for pig farm wastewater and biological fermentation treatment method and equipment

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Embodiment Construction

[0038] The composite flocculant of the present invention is formed by mixing equal quality modified attapulgite clay and sodium dichloroisocyanurate. The modification method of attapulgite clay is: mix attapulgite clay, chitin and polymeric sulfuric acid Mix the aluminum evenly according to the mass ratio of 4:1:1, add acetic acid with a concentration of 5% (m / v) to the above mixture and stir it into a paste, heat it in a water bath at 65°C for 2 hours, and then wash it with deionized water until The pH of the eluate is 7.2, then dried at 105 °C, and finally placed in a muffle furnace for roasting. The initial temperature of the roasting is 300 °C, and the roasting time is 2 hours. After cooling, the modified attapulgite clay is obtained. The crystal structures of unmodified attapulgite clay and modified attapulgite clay were determined by X-ray diffractometer, and the results were as follows: figure 1 shown. Depend on figure 1 It can be seen that when the diffraction angle...

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Abstract

The invention discloses a composite flocculant for pig farm wastewater and a biological fermentation treatment method and equipment. The composite flocculant is formed by mixing equal masses of modified attapulgite clay and sodium dichloroisocyanurate When in use, the pig farm wastewater to be treated is mixed with activated sludge and then added to an anaerobic fermentation tank to form a mixed solution, and a compound nutrient salt is added to the mixed solution for fermentation, and finally the fermented solution is further processed with a compound flocculant. Can. The invention overcomes the technical defects that the existing composite flocculants are easy to cause secondary pollution when treating pig farm wastewater, the treatment cost is high and the use is limited.

Description

technical field [0001] The invention relates to waste water treatment technology, in particular to pig farm waste water treatment technology. Background technique [0002] Intensive pig farm wastewater produces a large amount of wastewater, and the concentration of CODcr and ammonia nitrogen is high. For the pig farm wastewater after dry-wet separation, the CODcr is between 5000-10000mg / L, and the ammonia nitrogen content is 400-1500mg / L. High COD, High ammonia nitrogen is an urgent problem to be solved in the treatment of pig farm wastewater. [0003] At present, the treatment of livestock and poultry wastewater mainly includes the following treatment processes: aerobic treatment, anaerobic treatment, natural biological treatment, etc. The aerobic method has high efficiency in removing CODcr, BOD, etc., but the effect of removing ammonia nitrogen is poor, and the project cost is large and the operation cost is high. Anaerobic treatment has low energy consumption and can t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F1/54C02F9/14C02F103/20C02F101/16C02F101/30
CPCC02F1/52C02F1/5245C02F1/5263C02F1/54C02F3/28C02F2101/105C02F2101/16C02F2101/30C02F2103/20Y02E50/30
Inventor 陆洪省刘亚樵冯晓寒
Owner SHANDONG UNIV OF SCI & TECH
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