黃粉蟲幼蟲降解城市污泥環(huán)境影響因子研究
發(fā)布時(shí)間:2018-04-26 23:41
本文選題:黃粉蟲 + 城市污泥 ; 參考:《生態(tài)環(huán)境學(xué)報(bào)》2017年10期
【摘要】:黃粉蟲(Tenebrio molitor L.)含有豐富的營(yíng)養(yǎng)物質(zhì)和多種氨基酸,常被作為特種畜禽養(yǎng)殖的鮮活餌料或蛋白質(zhì)飼料添加劑,但是其飼喂原料要么成本較高,要么為了降低成本而導(dǎo)致其死亡率上升。利用城市污泥飼喂黃粉蟲幼蟲,以期達(dá)到既降低黃粉蟲飼喂成本,又為城市污泥的資源化利用提供一個(gè)新的解決途徑的目的。采用正交試驗(yàn)設(shè)計(jì)進(jìn)行了四因素多水平試驗(yàn),研究不同環(huán)境影響因子(溫度條件、污泥和麥麩配比比例、黃粉蟲幼蟲飼養(yǎng)密度及蟲體規(guī)格大小)對(duì)黃粉蟲幼蟲生長(zhǎng)速率、死亡率的影響,通過分析比較試驗(yàn)飼養(yǎng)前后黃粉蟲及蟲糞和飼料剩余物混合物中營(yíng)養(yǎng)成分、金屬元素含量變化,探討黃粉蟲幼蟲在城市污泥中生長(zhǎng)的適宜條件,以及黃粉蟲處理城市污泥的效果。利用城市污泥飼喂黃粉蟲幼蟲時(shí),飼養(yǎng)溫度在20~25℃,飼養(yǎng)密度為0.2 g·cm~(-2),污泥和麥麩配比為1∶1時(shí)黃粉蟲幼蟲生長(zhǎng)快,死亡率低。利用城市污泥喂養(yǎng)后黃粉蟲幼蟲氮含量顯著降低(P0.05),磷、鉀、鈣、鎂含量提高;提高;與城市污泥相比,黃粉蟲幼蟲蟲糞的磷含量顯著提高(P0.05),氮、鉀、鈣、鎂含量則降低。
[Abstract]:Tenebrio molitor L. Rich in nutrients and amino acids, it is often used as a fresh feed or protein feed additive for special livestock and poultry breeding, but its feed material is either high in cost or in order to reduce the cost, the death rate increases. In order to reduce the feeding cost of powdery mildew and to provide a new solution for the utilization of municipal sludge, the larvae of powdery mildew were fed with municipal sludge. The growth rate of different environmental factors (temperature, ratio of sludge to wheat bran, feeding density and size of larvae of powdery mildew) on the growth rate of T. Molitor larva was studied by orthogonal design with four factors and multi-level test, and the effects of different environmental factors (temperature, ratio of sludge and wheat bran) on the growth rate of the larvae were studied. By analyzing and comparing the changes of nutrient composition and metal element content in the mixture of fodder residue and feces before and after the experiment, the suitable conditions for the growth of the larvae of Molitor Molitor in municipal sludge were discussed. And the effect of powdery mildew on the treatment of municipal sludge. When the larvae were fed with municipal sludge, the feeding temperature was 20 ~ 25 鈩,
本文編號(hào):1808236
本文鏈接:http://sikaile.net/shengtaihuanjingbaohulunwen/1808236.html
最近更新
教材專著