作业帮请帮我找一篇有关洗衣废水处理的英文文献?
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请帮我找一篇有关洗衣废水处理的英文文献?
我要两万字符的哦~·
我要两万字符的哦~·
domestic wastewater treatment,is the process of removing contaminants from wastewater and household sewage,both runoff (effluents) and domestic.It includes physical,chemical and biological processes to remove physical,chemical and biological contaminants.Its objective is to produce a waste stream (or treated effluent) and a solid waste or sludge suitable for discharge or reuse back into the environment.This material is often inadvertently contaminated with many toxic organic and inorganic compounds.
Sewage can be treated close to where it is created (in septic tanks,biofilters or aerobic treatment systems),or collected and transported via a network of pipes and pump stations to a municipal treatment plant (see sewerage and pipes and infrastructure).Sewage collection and treatment is typically subject to local,state and federal regulations and standards.Industrial sources of wastewater often require specialized treatment processes (see Industrial wastewater treatment).
Conventional sewage treatment involves three stages,called primary,secondary and tertiary treatment.First,the solids are separated from the wastewater stream.Then dissolved biological matter is progressively converted into a solid mass by using indigenous,water-borne micro-organisms.Finally,the biological solids are neutralized then disposed of or re-used,and the treated water may be disinfected chemically or physically (for example by lagoons and microfiltration).The final effluent can be discharged into a stream,river,bay,lagoon or wetland,or it can be used for the irrigation of a golf course,green way or park.If it is sufficiently clean,it can also be used for groundwater recharge or agricultural purposes.
Sewage can be treated close to where it is created (in septic tanks,biofilters or aerobic treatment systems),or collected and transported via a network of pipes and pump stations to a municipal treatment plant (see sewerage and pipes and infrastructure).Sewage collection and treatment is typically subject to local,state and federal regulations and standards.Industrial sources of wastewater often require specialized treatment processes (see Industrial wastewater treatment).
Conventional sewage treatment involves three stages,called primary,secondary and tertiary treatment.First,the solids are separated from the wastewater stream.Then dissolved biological matter is progressively converted into a solid mass by using indigenous,water-borne micro-organisms.Finally,the biological solids are neutralized then disposed of or re-used,and the treated water may be disinfected chemically or physically (for example by lagoons and microfiltration).The final effluent can be discharged into a stream,river,bay,lagoon or wetland,or it can be used for the irrigation of a golf course,green way or park.If it is sufficiently clean,it can also be used for groundwater recharge or agricultural purposes.