時間:2021-12-13 14:01:02 tags:
隨著(zhu)氣溫不(bu)(bu)斷升高,畜(chu)禽養(yang)殖(zhi)場(chang)(chang)(chang)糞(fen)污處理不(bu)(bu)到位,往(wang)往(wang)容(rong)易行成“蚊蠅滋生(sheng)(sheng),惡臭難聞”的生(sheng)(sheng)態環(huan)境問題,給養(yang)殖(zhi)場(chang)(chang)(chang)周(zhou)邊的居民生(sheng)(sheng)活造成不(bu)(bu)利影(ying)響。為(wei)指(zhi)導廣大生(sheng)(sheng)豬養(yang)殖(zhi)場(chang)(chang)(chang)特別是小(xiao)型生(sheng)(sheng)豬養(yang)殖(zhi)場(chang)(chang)(chang)(戶)規范(fan)處置養(yang)殖(zhi)場(chang)(chang)(chang)糞(fen)污,降低污染,改善養(yang)殖(zhi)場(chang)(chang)(chang)周(zhou)邊環(huan)境,不(bu)(bu)斷提高畜(chu)禽糞(fen)污資源(yuan)化利用率(lv)。現推出以(yi)下糞(fen)污處理模式,供大家參考。
1、降解技術
豬糞(fen)污原位降解(jie)(jie)技(ji)術是利用(yong)好(hao)氧和厭氧微生物(wu)(wu)(wu)對(dui)豬糞(fen)尿(niao)中的(de)(de)有(you)機(ji)物(wu)(wu)(wu)進行降解(jie)(jie)、轉化,結合地面(mian)墊料平養飼養方式,使(shi)動物(wu)(wu)(wu)排泄(xie)的(de)(de)糞(fen)便免于清掃(sao),就地發酵(jiao),降解(jie)(jie)成(cheng)為(wei)有(you)機(ji)肥的(de)(de)養殖模式,也稱發酵(jiao)床養殖或(huo)厚墊料養殖等。
豬(zhu)(zhu)的(de)污染主要來自糞(fen)尿(niao)(niao)(niao)的(de)排(pai)放(fang),微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)發酵床養豬(zhu)(zhu),將谷(gu)殼、鋸末、米糠等(deng)和(he)微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)添加劑(ji)按(an)一定比例混拌均勻調整其水分后(hou),進(jin)(jin)(jin)行(xing)堆(dui)積,促進(jin)(jin)(jin)有(you)(you)益微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)菌(jun)群繁殖(zhi),發酵后(hou)將墊(dian)(dian)料放(fang)進(jin)(jin)(jin)豬(zhu)(zhu)舍里,鋪(pu)墊(dian)(dian)厚度(du)40-100厘米。豬(zhu)(zhu)舍地(di)面鋪(pu)設有(you)(you)機墊(dian)(dian)料,墊(dian)(dian)料里含有(you)(you)相當活性(xing)、能處理(li)糞(fen)尿(niao)(niao)(niao)的(de)有(you)(you)益微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu),豬(zhu)(zhu)在生(sheng)(sheng)(sheng)長過(guo)程中(zhong),糞(fen)尿(niao)(niao)(niao)都排(pai)泄到墊(dian)(dian)料上,生(sheng)(sheng)(sheng)豬(zhu)(zhu)糞(fen)尿(niao)(niao)(niao)可(ke)以為(wei)墊(dian)(dian)料中(zhong)的(de)有(you)(you)益菌(jun)提供營養,保持有(you)(you)益菌(jun)的(de)生(sheng)(sheng)(sheng)長繁殖(zhi),墊(dian)(dian)料里的(de)有(you)(you)益微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)能夠迅速有(you)(you)效地(di)對豬(zhu)(zhu)糞(fen)尿(niao)(niao)(niao)進(jin)(jin)(jin)行(xing)降(jiang)解、消(xiao)化。通過(guo)調節飼養密度(du),墊(dian)(dian)料中(zhong)的(de)微(wei)(wei)(wei)生(sheng)(sheng)(sheng)物(wu)(wu)(wu)可(ke)以使豬(zhu)(zhu)糞(fen)尿(niao)(niao)(niao)得到充(chong)分分解,將其轉(zhuan)化為(wei)有(you)(you)機物(wu)(wu)(wu)和(he)水分,不產生(sheng)(sheng)(sheng)任(ren)何有(you)(you)毒氣體,使豬(zhu)(zhu)舍無臭氣、無污染物(wu)(wu)(wu)排(pai)放(fang)。
因此,豬(zhu)舍不需要每(mei)天清(qing)掃和沖(chong)洗,不會產生沖(chong)洗圈舍的污(wu)(wu)水,豬(zhu)的糞與(yu)尿混(hun)合在墊(dian)料里,經微生物作(zuo)用(yong)(yong)后與(yu)墊(dian)料一(yi)起變成(cheng)有機(ji)肥(fei)料,所以(yi)沒(mei)有任何污(wu)(wu)水排出養豬(zhu)場。墊(dian)料使用(yong)(yong)一(yi)段時間(jian)后清(qing)出,清(qing)出的墊(dian)料進行(xing)高(gao)溫發酵(jiao),進一(yi)步無害(hai)化處理和腐熟,生產有機(ji)肥(fei),用(yong)(yong)于果樹、農(nong)作(zuo)物,達到(dao)循環(huan)利用(yong)(yong)、變廢為寶的效(xiao)果。
在通風良好的豬(zhu)(zhu)舍(she)內,豬(zhu)(zhu)的糞尿被微生物(wu)(wu)迅速(su)分解,不會(hui)產生臭氣,冬季墊(dian)料(liao)在微生物(wu)(wu)的作用下可(ke)以提(ti)高豬(zhu)(zhu)舍(she)溫度(du),但夏季豬(zhu)(zhu)舍(she)需要采取一定(ding)的降溫措施(shi)。由于發(fa)酵(jiao)床養豬(zhu)(zhu)過程中無需人(ren)(ren)工清糞、沖(chong)洗豬(zhu)(zhu)床、打掃圈舍(she),一方面(mian)可(ke)以減(jian)少飼養人(ren)(ren)員,節(jie)省人(ren)(ren)工支出,另一方面(mian)可(ke)減(jian)少水資源消耗,節(jie)省水費。
2、小型豬場糞污堆肥發酵還田技術
采取水(shui)沖(chong)糞(fen)(fen)(fen)的(de)工藝,在豬舍的(de)排(pai)水(shui)溝(gou)(gou)中(zhong)(zhong)注入一(yi)(yi)定量的(de)水(shui),糞(fen)(fen)(fen)尿、沖(chong)洗(xi)和飼養管理用水(shui)全部排(pai)放到縫隙地(di)板的(de)糞(fen)(fen)(fen)溝(gou)(gou)中(zhong)(zhong)儲存一(yi)(yi)定時間后(一(yi)(yi)般為(wei)1-2個(ge)月),待(dai)糞(fen)(fen)(fen)溝(gou)(gou)裝(zhuang)滿后,打開出(chu)口的(de)閘門,將(jiang)溝(gou)(gou)中(zhong)(zhong)的(de)糞(fen)(fen)(fen)水(shui)排(pai)除,使糞(fen)(fen)(fen)水(shui)流入糞(fen)(fen)(fen)便主干溝(gou)(gou),進入地(di)下糞(fen)(fen)(fen)池(chi)或用泵抽(chou)吸(xi)到地(di)面儲糞(fen)(fen)(fen)池(chi)。
對(dui)豬(zhu)場(chang)已有(you)的戶外糞(fen)水(shui)排(pai)放(fang)明(ming)溝,對(dui)其進(jin)行封閉改造,防止雨(yu)水(shui)進(jin)入其中,實現雨(yu)污(wu)(wu)(wu)(wu)分離。對(dui)新建豬(zhu)場(chang),在豬(zhu)舍(she)屋檐雨(yu)水(shui)側,修建雨(yu)水(shui)明(ming)渠,雨(yu)水(shui)明(ming)渠的基本(ben)尺寸(cun)為0.3米X0.3米;在豬(zhu)舍(she)的糞(fen)污(wu)(wu)(wu)(wu)排(pai)放(fang)口或集(ji)糞(fen)池排(pai)放(fang)口,鋪設(she)污(wu)(wu)(wu)(wu)水(shui)輸送(song)(song)管(guan)道,管(guan)道直徑在200毫米以(yi)上,糞(fen)污(wu)(wu)(wu)(wu)通過管(guan)道直接輸送(song)(song)至糞(fen)污(wu)(wu)(wu)(wu)處(chu)理系統,對(dui)于(yu)重力流輸送(song)(song)的糞(fen)污(wu)(wu)(wu)(wu)管(guan)道,管(guan)底坡度(du)不低于(yu)2%。雨(yu)污(wu)(wu)(wu)(wu)分離,可以(yi)減少(shao)進(jin)入豬(zhu)場(chang)糞(fen)污(wu)(wu)(wu)(wu)處(chu)理系統的污(wu)(wu)(wu)(wu)水(shui)量。
糞(fen)便(bian)污水(shui)(shui)(shui)貯(zhu)(zhu)存(cun)設施(shi)應建(jian)(jian)(jian)造(zao)在(zai)(zai)豬場生產(chan)區及生活管理區的下(xia)風向或(huo)側風向,并盡(jin)量遠離風景區以及住宅(zhai)區。糞(fen)便(bian)污水(shui)(shui)(shui)貯(zhu)(zhu)存(cun)設施(shi)不能(neng)建(jian)(jian)(jian)在(zai)(zai)坡(po)度較(jiao)低、水(shui)(shui)(shui)災較(jiao)多的地方,以免在(zai)(zai)雨量較(jiao)大或(huo)洪(hong)水(shui)(shui)(shui)暴發時(shi),池內污水(shui)(shui)(shui)溢出(chu)而污染(ran)環(huan)境。貯(zhu)(zhu)存(cun)設施(shi)要(yao)有防滲措(cuo)施(shi)和較(jiao)高(gao)的抗腐蝕(shi)性(xing)能(neng),以防止糞(fen)便(bian)污水(shui)(shui)(shui)貯(zhu)(zhu)存(cun)過程滲漏對(dui)地下(xia)水(shui)(shui)(shui)產(chan)生污染(ran)。若(ruo)(ruo)在(zai)(zai)黏土(tu)層上建(jian)(jian)(jian)造(zao),可(ke)在(zai)(zai)設施(shi)內鋪墊(dian)不滲水(shui)(shui)(shui)的塑膠(jiao)膜;若(ruo)(ruo)在(zai)(zai)沙土(tu)上建(jian)(jian)(jian)造(zao),可(ke)對(dui)設施(shi)底部(bu)和四(si)壁進行(xing)硬化處理;建(jian)(jian)(jian)設完成后對(dui)設施(shi)進行(xing)滲水(shui)(shui)(shui)性(xing)測試,以保證防滲性(xing)滿足(zu)要(yao)求(qiu)。貯(zhu)(zhu)存(cun)場地面應高(gao)于周圍(wei)地面30厘米,有些糞(fen)便(bian)污水(shui)(shui)(shui)貯(zhu)(zhu)存(cun)設施(shi)容積(ji)較(jiao)大,在(zai)(zai)清理底部(bu)淤泥等物質(zhi)時(shi)可(ke)能(neng)要(yao)借助機械(xie)設備(bei),此時(shi)需要(yao)在(zai)(zai)設施(shi)底部(bu)設置保護材料,以防止振動等因素對(dui)設施(shi)造(zao)成損壞。
堆(dui)肥(fei)(fei)分(fen)(fen)好(hao)氧(yang)和厭氧(yang)堆(dui)肥(fei)(fei),好(hao)氧(yang)堆(dui)肥(fei)(fei)是(shi)依靠專性(xing)和兼性(xing)好(hao)氧(yang)微生(sheng)物的作(zuo)用,使有機(ji)物降(jiang)解的生(sheng)化過(guo)程(cheng),好(hao)氧(yang)堆(dui)肥(fei)(fei)分(fen)(fen)解速(su)度(du)快、周(zhou)期短、異(yi)味少、有機(ji)物分(fen)(fen)解充(chong)分(fen)(fen);厭氧(yang)堆(dui)肥(fei)(fei)是(shi)依靠專性(xing)和兼性(xing)厭氧(yang)微生(sheng)物的作(zuo)用,使有機(ji)物降(jiang)解的過(guo)程(cheng),厭氧(yang)堆(dui)肥(fei)(fei)分(fen)(fen)解速(su)度(du)慢、發酵周(zhou)期長、且堆(dui)制過(guo)程(cheng)中易產生(sheng)臭氣,目前,主要(yao)采(cai)用好(hao)