沼氣工程主要是通過厭氧發(fā)酵及相關處理降低糞水有機質含量，達到或接近排放標準并按括厭氧發(fā)酵主體及配套工程技術設計工藝要求獲取能源—沼氣。沼氣利用產品與設備技術，主要是利用沼氣或直接用于生活用能，或發(fā)電、或燒鍋爐、或直接用于生產供暖、或作為化工原料等：沼肥制成液肥和復合肥技術，則主要是通過固液分離，添加必要元素和成份，使沼肥制成液肥或復合肥，供自身使用或銷售。

　　Biogas engineering mainly reduces the organic matter content of manure through anaerobic fermentation and related treatments, meets or approaches emission standards, and obtains energy - biogas according to the technical design process requirements of anaerobic fermentation main body and supporting engineering. Biogas utilization products and equipment technology mainly utilize biogas for daily energy consumption, power generation, boiler burning, heating production, or as chemical raw materials. The technology of making liquid fertilizer and compound fertilizer from biogas fertilizer mainly involves solid-liquid separation, adding necessary elements and components, and making biogas fertilizer into liquid fertilizer or compound fertilizer for personal use or sales.

　　生物質沼氣工程中的沼氣池是通過使用廢料、秸稈、禽畜糞便等發(fā)酵進行工作，而產生沼氣的設備。使用一段時間就需要及時填料并清理殘渣和廢水。沼氣池是如何處理污水的呢？

　　The biogas digester in biomass biogas engineering is a device that produces biogas by fermenting waste materials, straw, livestock manure, and other materials. After a period of use, it is necessary to promptly fill and clean the residue and wastewater. How does a biogas digester treat wastewater?

　　沼氣工程的沼氣池是如何處理廢水的

　　How does the biogas digester in biogas engineering treat wastewater

　　沼氣池處理養(yǎng)殖廢水主要功能：一是降低了廢水中的COD含量。據(jù)資料顯示如果完全發(fā)酵，COD的去除率在80%以上。往往養(yǎng)殖場的沼氣池都不能完全發(fā)酵即被排出。二是對畜禽糞便進行了無害化處理。即，由于沼氣池厭氧發(fā)酵池，有害病菌會完全殺死。

　　The main function of biogas digesters in treating aquaculture wastewater is to reduce the COD content in the wastewater. According to data, if fully fermented, the COD removal rate is over 80%. Often, the biogas digesters in breeding farms cannot fully ferment and are discharged. Secondly, harmless treatment has been carried out on livestock and poultry manure. That is, due to the anaerobic fermentation tank of the biogas digester, harmful bacteria will be completely killed.

　　如果要想達標排放，就得讓畜禽糞便充分發(fā)酵，然后對沼渣沼液進行分離處理。沼渣可以作為有機肥料使用。沼液進入防滲貯液池沉淀。在防滲貯液池的末端，再建一個生物凈化塘，沉淀過的沼液可排入凈化塘。塘內種植水生植物(如，水葫蘆、茭白、荷藕等)。這樣的處理措施可能會達標排放。

　　If we want to meet the emission standards, we need to fully ferment livestock and poultry manure, and then separate and treat the sludge and slurry. Biogas residue can be used as organic fertilizer. The biogas slurry enters the anti-seepage storage tank for sedimentation. At the end of the anti-seepage storage tank, build another biological purification pond, and the settled biogas slurry can be discharged into the purification pond. Planting aquatic plants (such as water hyacinth, water bamboo, lotus root, etc.) in the pond. This treatment measure may meet the emission standards.