1. Before the raw materials for gas production are livestock manure, kitchen waste, landfill leachate and other biogas that can produce dust, biogas dust removal pretreatment shall be carried out. The pretreatment equipment includes gas washing tower (wet) and dust removal tower (dry).
2.生物脱硫的水源如果是地下水等含盐量较大时，应对自来水增设软化水装置。
2. If the water source for biological desulfurization is groundwater with large salt content, a softened water device shall be added to the tap water.
3. When there is a large amount of ammonia in the pretreated biogas, if Party A requires treatment, appropriate hydrochloric acid or sulfuric acid can be put into the circulating water in the wet gas washing system, and the acidic circulating water can absorb ammonia. When the circulating water of the gas washing system is close to saturation, it should be discharged in time and replaced with circulating water.
4.当预处理沼气温度在40度以上时，沼气在生物脱硫前，应做降温处理。降温下降到35度以下为宜。
4. When the temperature of pretreated biogas is above 40 ℃, the biogas shall be cooled before biological desulfurization. The temperature should drop below 35 degrees.
5.当预处理沼气的压力小于3Kpa时，沼气在生物脱硫之前，应对沼气进行增压，增压到3kpa以上。
5. When the pressure of pretreated biogas is less than 3kpa, the biogas shall be pressurized to more than 3kpa before biological desulfurization.
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