Showing results for: domestic sewage treatment Articles
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The Solution of Domestic Sewage Treatment Process
What is domestic sewage treatment? Domestic sewage is mainly various detergents and sewage, garbage, feces, etc. used in urban life, mostly non-toxic inorganic salts. Domestic sewage contains nitrogen, phosphorus, sulfur, and pathogenic bacteria.The features of domestic sewage treatment? Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugars and fatty ...
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The solutions of domestic sewage treatment
The source of domestic sewage? Domestic sewage is the waste water discharged from the daily life of residents, mainly from residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and toilets of industrial enterprises. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ...
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Performance evaluation of wastewater treatment using horizontal subsurface flow constructed wetlands optimized by micro-aeration and substrate selection
The effects of micro-aeration and substrate selection on domestic sewage treatment performance were explored using three pairs (with or without micro-aeration) of horizontal subsurface flow (HSSF) constructed wetlands (CWs) filled with zeolite, ceramsite or quartz granules. The individual and combined effects of micro-aeration and substrate selection on the purification performance of the ...
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COD removal efficiency and mechanism of HMBR in high volumetric loading for ship domestic sewage treatment
The hybrid membrane bioreactor (HMBR) has been applied in ship domestic sewage treatment under high volumetric loading for ship space saving. The mechanism and influence factors on the efficiency, including hydraulic retention time (HRT), dissolved oxygen (DO) of chemical oxygen demand (COD) removal were investigated. The HMBR's average COD removal rate was up to 95.13% on volumetric loading ...
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Anaerobic Reactor Design Concepts for the Treatment of Domestic Wastewater
Since the earlier anaerobic treatment systems, the design concepts were improved from classic reactors like septic tanks and anaerobic ponds, to modern high rate reactor configurations like anaerobic filters, UASB, EGSB, fixed film fluidized bed and expanded bed reactors, and others. In this paper, anaerobic reactors are evaluated considering the historical evolution and types of wastewaters. The ...
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The Microbiology and Biochemistry of Anaerobic Bioreactors with Relevance to Domestic Sewage Treatment
Anaerobic granular and fixed-film reactors have been successfully operated for wastewater treatment at full scale for over two decades and represent a sustainable, energy-producing approach, which is increasingly being directed towards treatment of domestic sewage. Research over the past two decades, and significant operational experience, has demonstrated that there are no fundamental ...
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Bacterial composition and nutrient removal with a novel PIA-A2/O sewage treatment
A novel post intermittent aeration anaerobic–anoxic–oxic (PIA-A2/O) process was developed to integrate shortcut nitrification–denitrification with denitrifying phosphorus (P) removal for domestic sewage treatment. With the transformation in configuration and phased start-up strategy, the nitritation rate and the ratio of denitrifying phosphorus accumulating organisms to phosphorus ...
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Optimization of operation conditions for domestic sewage treatment using a sequencing batch biofilm filter
A sequencing batch biofilm filter (SBBF) was applied to treat domestic sewage. The bioreactor consisted of fibrous filler in the upper part and ceramsite filter media in the lower part. The impacts of the most important factors including dissolved oxygen (DO), water temperature and hydraulic retention time (HRT) were evaluated on contaminants removal during the operation of the SBBF. Changes ...
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Effect of ozone on secondary effluent treatment for reuse in agriculture
The results of secondary effluents ozonation from domestic sewages treatment plants in Havana, Cuba are presented. The ozone effect on some physico-chemical parameters was determined. The ozone gas concentration is the parameter, which exerts the greatest influence on the ozone transferred. The results indicated that ozonation of secondary effluents is a safe disinfection alternative for ...
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Characteristics and Classification of Buried Domestic Sewage Treatment Technology
The buried sewage treatment equipment is a modular high-efficiency biological sewage treatment equipment. It is a sewage biological treatment system with biofilm as the main body of purification. It makes full use of biofilm reactors such as anaerobic biofilter and contact oxidation bed. The characteristics of high biological density, strong pollution resistance, low power consumption, stable ...
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Effect of earthworm loads on organic matter and nutrient removal efficiencies in synthetic domestic wastewater, and on bacterial community structure and diversity in vermifiltration
In this paper, we studied the effect of earthworm loads on the removal rates of chemical oxygen demand (COD), ammonia nitrogen (NH3-N), total nitrogen, and total phosphorus from synthetic domestic sewage and on the bacterial community structure and diversity of substrates in earthworm packing beds. The different vermifiltrations (VFs), including the control, are successful in removing both ...
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Development and application of biogas project for domestic sewage treatment in rural China: opportunities and challenges
The biogas project for domestic sewage treatment (BPDST) is considered a promising facility for wastewater management in rural areas of China. This paper explores previous experimental works, cost analysis, and BPDST structure and design based on Chinese literature. Opportunities for developing decentralized or neighborhood-based BPDSTs include fulfilling Millennium Development Goals (MDGs) ...
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Anaerobic Processes as the Core Technology for Sustainable Domestic Wastewater Treatment: Consolidated Applications, New Trends, Perspectives, and Challenges
Anaerobic digesters have been responsible for the removal of large fraction of organic matter (mineralization of waste sludge) in conventional aerobic sewage treatment plants since the early years of domestic sewage treatment (DST). Attention on the anaerobic technology for improving the sustainability of sewage treatment has been paid mainly after the energy crisis in the 1970s. The successful ...
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Potential of resource recovery in UASB/trickling filter systems treating domestic sewage in developing countries
This paper aims to present perspectives for energy (thermal and electric) and nutrient (N and S) recovery in domestic sewage treatment systems comprised of upflow anaerobic sludge blanket (UASB) reactors followed by sponge-bed trickling filters (SBTF) in developing countries. The resource recovery potential was characterized, taking into account 114 countries and a corresponding population of ...
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Tubular UF Membrane Leachate Treatment Wastewater Treatment Equipment
Jiarong TUF equipment has high operational flux and replaceable components, and are designed to prevent the buildup of pollutants. With more than 10 years of experience in industrial membrane separation technology, Jiarong Technology provides customers with tubular membrane and complete equipment products, tubular membrane application process development and engineering design. Technical ...
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Performance of a pilot-scale constructed wetland for stormwater runoff and domestic sewage treatment on the banks of a polluted urban river
To examine the performance of a constructed wetland system on stormwater runoff and domestic sewage (SRS) treatment in central east China, two parallel pilot-scale integrated constructed wetland (ICW) systems were operated for one year. Each ICW consisted of a down-flow bed, an up-flow bed and a horizontal subsurface flow bed. The average removal rates of chemical oxygen demand (CODCr), total ...
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Mathematical Modelling of Anaerobic Reactors Treating Domestic Wastewater: Rational Criteria for Model Use
Anaerobic digestion modelling is an established method for assessing anaerobic wastewater treatment for design, systems analysis, operational analysis, and control. Anaerobic treatment of domestic wastewater is a relatively new, but rapidly maturing technology, especially in developing countries, where the combination of low cost, and moderate-good performance are particularly attractive. The key ...
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Streamside management zones effectiveness for protecting water quality after forestland application of biosolids
Received for publication August 1, 2008. Biosolids, materials resulting from domestic sewage treatment, are surface applied to forest soils to increase phosphorus (P), nitrate, and ammonium availability. Retaining streamside management zones (SMZs) can limit nutrient pollution of streams. We delineated 15-m SMZs along three intermittent streams in an 18-yr-old Pinus taeda L. plantation. We ...
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Upgrading effluent quality with a plastic media based process
Wastewater treatment plant retrofits worldwide are motivated by two main developments: changes in effluent quality regulations, population growth in certain areas. In recent years, the EU (under directive EEC/271/91) and US (Section 304A of the Clean Water Act) have launched programs for nutrient removal in all existing wastewater treatment plants, originally designed for BOD and TSS ...
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Evaluation of virus recovery methods and efficiency of tannin-derived coagulants in removing total coliforms, E. coli and enteric viruses in effluents of a domestic sewage treatment plant
In the present study, nine coagulants having potential to be used for sewage treatment were compared to assess their efficiency in removing total coliform bacteria, Escherichia coli and adenovirus. The coagulants tested were metallic and organic and their efficiency was compared when treating samples of raw and treated sewage (activated sludge). Before the efficiency tests of the coagulants, ...
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