本文選題：規(guī)模化豬場　切入點：糞污處理　出處：《南京農(nóng)業(yè)大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：為了解規(guī)�；i場當(dāng)前糞污處理的模式,探索規(guī)模豬場糞污處理的理想模式。本研究先通過調(diào)查問卷的方式對江蘇省內(nèi)5個地區(qū)34個不同類型豬場沼液處理方式進行調(diào)研分析,之后隨機選取8個具有典型代表性的規(guī)模豬場進行采樣,從糞污的化學(xué)耗氧量(COD)、總氮、總磷、鋅、銅等指標(biāo)進行綜合分析,最終提出一種理想的糞污處理模式。試驗分為兩個部分:1.規(guī)�；i場糞污處理模式調(diào)研分析目前江蘇省規(guī)�；i養(yǎng)殖生產(chǎn)中普遍重視干糞的處理。但對于污水處理水平參差不齊。主要存在兩種模式"豬—沼—排放"模式和"豬-沼-氧化-排放",都充分利用了厭氧氧化、發(fā)酵等技術(shù)。雖然,在某些指標(biāo)上得到了很好的改善,甚至有的指標(biāo)已經(jīng)達到國家二級排放標(biāo)準(zhǔn),但是對環(huán)境的污染仍然存在。為此結(jié)合調(diào)查研究所了解的信息,依據(jù)豬場所在地區(qū)土地資源及周圍環(huán)境情況,提出以下三種豬場糞污處理模式:土地集約型養(yǎng)殖模式、大型農(nóng)場循環(huán)模式、園區(qū)產(chǎn)業(yè)循環(huán)型模式。希望能夠促進養(yǎng)殖業(yè)、種植業(yè)、能源再生行業(yè)的綜合發(fā)展,減少豬場糞污對環(huán)境的壓力。2.規(guī)�；i場糞污處理模式比較研究以"豬-沼-排放"模式處理的規(guī)�；B(yǎng)殖場中,最終排放的沼液經(jīng)厭氧發(fā)酵對總氮和鋅沒有顯著性影響。此種模式所產(chǎn)生的最后沼液沒有達到國家畜禽場的糞污排放標(biāo)準(zhǔn)。而將沼液進行好氧氧化的"豬-沼-氧化-排放"處理后,最終排放的沼液中COD值、總磷、總氮均有顯著降低(P0.05),但是仍然不符合國家要求的排放標(biāo)準(zhǔn)。結(jié)合土地資源和周圍環(huán)境,本研究提出在土地集約型場高效養(yǎng)殖糞水處理模式下的豬場中,經(jīng)過厭氧發(fā)酵、好氧氧化、生物降解等過程沼液中的COD、總磷、銅、鋅等指標(biāo)均極顯著低于生產(chǎn)區(qū)(P0.01),結(jié)果低于國家畜禽場糞污排放標(biāo)準(zhǔn)和城市污水排放國家標(biāo)準(zhǔn)。結(jié)果表明該模式可以有效利用豬場防疫溝及剩余土地對沼液進行生物降解,處理沼液效果較好,實現(xiàn)豬場污水的良性循環(huán)。
[Abstract]:In order to understand the current mode of large-scale pig farm manure treatment and to explore the ideal model of large-scale pig farm manure treatment, this study investigated and analyzed 34 different types of pig farm biogas treatment methods in 5 regions of Jiangsu province by questionnaire. After that, 8 typical pig farms were randomly selected for sampling, and the chemical oxygen consumption of feces was analyzed comprehensively, such as COD, total nitrogen, total phosphorus, zinc, copper and so on. Finally, an ideal manure treatment model was put forward. The experiment was divided into two parts: 1. Investigation and analysis of the scale pig farm manure treatment model. At present, the treatment of dry manure is generally attached importance to in the scale pig breeding production in Jiangsu province. However, the treatment of sewage is generally paid attention to. The treatment levels are uneven. There are two main modes "pig-marsh-discharge" and "pig-marsh-oxidation-discharge", both of which make full use of anaerobic oxidation, Techniques such as fermentation. Although some indicators have been well improved, and even some have met the national secondary emission standards, pollution to the environment still exists. According to the land resources and the surrounding environment of the pig farm, the following three types of pig farm manure treatment models are put forward: the intensive farming mode, the large-scale farm circulation model, the industrial recycling model of the park, and the hope to promote the breeding industry. Comprehensive Development of planting and Energy Regeneration Industry, reducing the pressure of Pig manure pollution on the Environment. 2. Comparative study on the treatment Mode of Pig-Marsh discharge in Large-scale breeding Farm, The final biogas effluent produced by anaerobic fermentation has no significant effect on total nitrogen and zinc. The final biogas produced by this model does not meet the national standards for excrement discharge from livestock and poultry farms. After the oxidation-emission treatment, The COD value, total phosphorus and total nitrogen in the final discharged biogas sludge were significantly reduced by P0.05N, but still did not meet the national standard of discharge, combining with the land resources and the surrounding environment, In this study, it was proposed that in the pig farm under the mode of highly efficient manure treatment in the land intensive farm, COD, TP, Cu in the biogas liquor could be treated by anaerobic fermentation, aerobic oxidation, biodegradation and so on. Zinc and other indexes were significantly lower than that of P0.01C in production areas, and the results were lower than the national standard for excrement discharge from livestock and poultry farms and the national standard for municipal sewage discharge. The results showed that the model could effectively use the epidemic prevention ditch of pig farm and the remaining land to biodegrade the biogas. The treatment effect of biogas liquid is better and the benign cycle of pig farm sewage is realized.
【學(xué)位授予單位】：南京農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X713

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