期刊文献+
共找到9篇文章
< 1 >
每页显示 20 50 100
Analysis of the Effect and Influencing Factors of Rural Domestic Sewage Treatment Based on A^(2)O-MBBR Integrated Process
1
作者 Wangang WU Aiping WU +2 位作者 Guixiang YUAN Yuyuan ZHOU Junwei LU 《Agricultural Biotechnology》 2024年第2期27-32,共6页
[Objectives] This study was conducted to solve the prominent problems in the treatment of domestic sewage in southern rural areas of China. [Methods] An integrated process treatment mode of anaerobic/anoxic/aerobic mo... [Objectives] This study was conducted to solve the prominent problems in the treatment of domestic sewage in southern rural areas of China. [Methods] An integrated process treatment mode of anaerobic/anoxic/aerobic moving bed biofilm reactor (A 2O-MBBR) was proposed to analyze and study its operating effect and influencing factors. [Results] The A^(2)O-MBBR mode had good COD removal efficiency and nitrogen and phosphorus removal performance, and the water quality index of the effluent met the Class A standard of GB181918-2002. This mode is suitable for treating rural domestic sewage, and has high treatment effects in different operating periods. In spring, the average removal rates of COD, NH_(4)^(+)-N, TN, TP and SS reached (83.53 ± 2.15)%, (89.44 ± 4.97)%, (67.36±18.53)%, (88.22±11.21)% and (91.73±2.25)%, respectively;In the autumn period, the average removal rates of COD, NH_(4)^(+)-N, TN, TP and SS were (83.49±2.64)%, (89.26±9.19)%, (66.05±17.00)%, (87.48±9.68)%, and (91.13±2.35)%. [Conclusions] This study provides theoretical reference and technical support for the popularization and application of A^(2)O-MBBR integrated process. 展开更多
关键词 A^(2)O-MBBR process rural domestic sewage Nitrogen and phosphorus removal
下载PDF
Effect of Micro-electrolysis and Micro-nano Bubbles Coupled with Peroxymonosulfate Treatment of Rural Domestic Sewage
2
作者 Peng ZHOU Yixin XU +3 位作者 Dongmei CHEN Cheng WU Xiaosi LEI Li FENG 《Meteorological and Environmental Research》 2024年第4期54-57,共4页
With the continuous deepening of rural revitalization strategy and the increasingly strict sewage discharge standards,rural domestic sewage treatment technology is facing higher challenges and requirements.The combine... With the continuous deepening of rural revitalization strategy and the increasingly strict sewage discharge standards,rural domestic sewage treatment technology is facing higher challenges and requirements.The combined process of micro-electrolysis+micro-nano bubbles coupled with peroxymonosulfate was constructed in this study,and the treatment effect and application value of this technology were explored with the actual rural domestic sewage as the treatment object.The experimental results showed that under the conditions of HRT of 120 min,PMS dosage of 0.15 mmol/L,pH=7,MBs air intake of 15 ml/min,current intensity of 15 A,and Fe/C mass ratio of 1:1,the removal rates of COD,ammonia nitrogen and total phosphorus can reach 88.55%,77.18%and 74.67%,respectively.Under the condition that the pH value of sewage was not adjusted,the non-biochemical simultaneous decarbonization,denitrification and phosphorus removal of rural domestic sewage can be achieved by micro-electrolysis and micro-nano bubbles coupled with peroxymonosulfate.The concentrations of effluent COD,ammonia nitrogen and total phosphorus met the requirements of the first level standard of the Discharge Standard of Water Pollutants for Rural Domestic Sewage Treatment Facilities(DB45T2413-2021).And the comprehensive operating cost was about 1.15 yuan/m 3. 展开更多
关键词 Integrated equipment rural domestic sewage Micro-nano bubbles PEROXYMONOSULFATE MICRO-ELECTROLYSIS
下载PDF
Rural Domestic Sewage Treatment Model: Case Study Based on Dongying Section of the Yellow River Basin
3
作者 Shan Zhang Yu Wang Xiujuan Wang 《Journal of Environmental Protection》 CAS 2023年第3期172-184,共13页
The 20<sup>th</sup> National Congress of the Communist Party of China proposed to promote the improvement of urban and rural living environment and build livable and workable villages and beautiful village... The 20<sup>th</sup> National Congress of the Communist Party of China proposed to promote the improvement of urban and rural living environment and build livable and workable villages and beautiful villages. The development and challenges of rural domestic sewage treatment coexist. Based on the field investigation of 15 administrative villages in 3 districts and counties of Dongying City, there is a big gap between the development status of rural domestic sewage treatment and expectations. Investigate rural domestic sewage treatment cases in-depth, and condense four modes of primitive, developmental, mature and advanced in a variety of different rural domestic sewage treatment models for discussion, among which, the village sewage treatment work under the mature mode has achieved remarkable results, and is at the forefront of the current rural domestic sewage treatment. Through the multi-case analysis method, the practical dilemma of sewage treatment in different models of villages is summarized, and the feasible improvement path is explored, which contributes to the ecological protection and high-quality development of Dongying and the Yellow River Basin. 展开更多
关键词 rural domestic sewage Human Settlements Ecological Protection and High-Quality Development of the Yellow River Basin
下载PDF
Problem and Countermeasure of Rural Domestic Sewage Treatment 被引量:3
4
作者 曲丽丽 李悦 +2 位作者 孔范龙 赵丽霞 孙鹏 《Agricultural Science & Technology》 CAS 2012年第12期2620-2622,共3页
With the development of rural economy, pollutions of rural sewage are in- creasingly serious. This paper introduces the characteristics of rural domestic sewage and the rural sewage treatment situation, and according ... With the development of rural economy, pollutions of rural sewage are in- creasingly serious. This paper introduces the characteristics of rural domestic sewage and the rural sewage treatment situation, and according to the problems of funds, management, process selection, policy and weak awareness of environmental protection in the rural domestic sewage treatment, puts forward relevant countermea- sures to ensure long-term operation of sewage treatment system, and achieve the purpose of improving rural water environment and protect the ecological environment in rural areas. 展开更多
关键词 rural domestic sewage treatment PROBLEM COUNTERMEASURES
下载PDF
Decentralized Treatment Technique in Rural Domestic Sewage in China
5
作者 赵军 《Meteorological and Environmental Research》 CAS 2010年第8期88-91,101,共5页
Nowadays,rural domestic sewage has had serious effects on the natural environment in rural areas such as the body of water and soil.In order to ensure rural water security and good health condition of farmers,it is ur... Nowadays,rural domestic sewage has had serious effects on the natural environment in rural areas such as the body of water and soil.In order to ensure rural water security and good health condition of farmers,it is urgent to treat the rural sewage.The theoretical principle,characteristics,deficiencies and application status of some decentralized disposal technologies for domestic sewage are introduced,which include high rate algal pond technology,subsurface infiltration treatment system,earthworm eco-filter,constructed wetland treatment technology and membrane bioreactor technology,so as to provide references for the rural sewage treatment. 展开更多
关键词 Environmental pollution rural domestic sewage Treatment technology China
下载PDF
Disposal of Rural Domestic Sewage in Ecological Wetland System
6
作者 AO Ziqiang GUI Shuanglin +4 位作者 PENG Guiqun XIA Song XIONG Jihai FU Jiaqi JIANG Cheng 《Journal of Landscape Research》 2015年第6期23-25,共3页
Pollution brought by rural domestic sewage has become increasingly serious, so it is imperative to fi gure out economical and efficient solutions. On the basis of comparison between rural domestic sewage treatment mea... Pollution brought by rural domestic sewage has become increasingly serious, so it is imperative to fi gure out economical and efficient solutions. On the basis of comparison between rural domestic sewage treatment means in China and abroad, actual conditions of countryside, current situation and features of domestic sewage, this paper adopted the compound ecological wetland system consisting of anaerobic and aerobic units, ecological floating bed and artifi cial wetland, so as to remove nitrogen and phosphorus efficiently, achieve the goal of low operation and construction cost and less land use. 展开更多
关键词 rural domestic sewage Ecological wetland Remove nitrogen and phosphorus Act according to the local conditions
下载PDF
Advances in the Medicinal Value of Constructed Wetland Plants for Treating Rural Domestic Sewage
7
作者 Ziqiang AO Jinghua LIANG +2 位作者 Meihong BU Yun GUO Mingzhong LONG 《Meteorological and Environmental Research》 CAS 2021年第1期70-74,共5页
Firstly,the advantages and disadvantages of constructed wetlands for treating rural domestic sewage are introduced.Secondly,the types of constructed wetland plants are introduced.Thirdly,the suitability of using medic... Firstly,the advantages and disadvantages of constructed wetlands for treating rural domestic sewage are introduced.Secondly,the types of constructed wetland plants are introduced.Thirdly,the suitability of using medicinal wetland plants to treat rural domestic sewage is analyzed.Fourthly,the principles of selecting wetland plants with medicinal value are studied.Finally,commonly used constructed wetland plants and their medicinal value are introduced. 展开更多
关键词 Medicinal value rural domestic sewage Constructed wetland Plant selection
下载PDF
Characteristics of rural domestic sewage discharge and their driving mechanisms: evidence from the Northern Region, China 被引量:1
8
作者 Jianguo Liu Ziyu Zhou +10 位作者 Pengyu Li Zixuan Wang Ying Yan Xuezheng Yu Wenkai Li Tianlong Zheng Yingnan Cao Wenjun Wu Wenqian Cai Zhining Shi Junxin Liu 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2024年第7期47-58,共12页
The traits of rural domestic sewage emission are unclear,negatively affecting rural domestic sewage treatment and sewage management.This study used data from the Second National Pollution Source Census Bulletin to est... The traits of rural domestic sewage emission are unclear,negatively affecting rural domestic sewage treatment and sewage management.This study used data from the Second National Pollution Source Census Bulletin to establish a data set.The spatial distribution characteristics and main factors influencing rural sewage discharge in the Northern Region were studied using spatial autocorrelation analysis and structural equations.The findings demonstrated that(l)a significant Spearman correlation between drainage water volume(DwV),chemical oxygen demand(COD),ammonia nitrogen(NH_(3)-N),total nitrogen(TN),and total phosphorus(TP)and that the correlation coefficients between DWV and COD,NH,-N,TNand TP were 0.87**,1.0**,0.99**,0.99**,respectively;(2)rural sewage discharge showed spatial autocorrelation,and rural domestic sewage discharge in the districts and counties with an administration was significantly higher than in the surrounding areas;and(3)social development was the main driver rural domestic sewage changes(path coefficient was 0.407**),and the main factors influencing rural domestic sewage discharge were the urbanization rate,years of education,and population age structure.This study obtained the spatial variation law and clarified the main influencing factors of rural domestic sewage to provide data support and a theoretical basis for subsequent rural sewage collection and treatment.Use of the Inner Mongolia Autonomous Region in northern China as a typical case,provides a theoretical foundation for scientific decision-making on rural domestic sewage treatment at the national and regional levels and offers new perspectives for managing pollutants. 展开更多
关键词 rural domestic sewage Emission characteristics Spatial autocorrelation analysis Influencing factors
原文传递
Characteristics of Phosphorus Adsorption with Boiler Slag and Process Optimization 被引量:3
9
作者 梁思华 余光伟 +3 位作者 林佩祯 种云霄 崔理华 邱兰 《Agricultural Science & Technology》 CAS 2012年第7期1547-1549,1565,共4页
[Objective] This study aimed to investigate the characteristics of phosphorus adsorption on boiler slag and optimize the adsorption process. [Method] Boiler slag was used as an adsorbent in the single-grade adsorption... [Objective] This study aimed to investigate the characteristics of phosphorus adsorption on boiler slag and optimize the adsorption process. [Method] Boiler slag was used as an adsorbent in the single-grade adsorption process to dispose the rural domestic sewage. During the course, phosphorus adsorption kinetics and thermodynamics, adsorption operating curve and the minimum boiler slag dosage were analyzed and calculated. [Result] Langmuir adsorption isotherm could be applied to describe the absorption of phosphorus with boiler slag, and the absorption kinetics was confirmed with the pseudo second-order equation. The maximum absorption quantity and the initial absorption rate increased with the rise of temperature, reaching up to 0.159 1 mg/g and 0.169 8 mg/(g·min) respectively at 40 ℃. Thermodynamic variables ΔG0<0 and ΔH0>0 indicated that the entire process was a spontaneous endothermic reaction, and high temperature would facilitate the reaction of absorption. In the single grade adsorption, the minimum adsorbent dosage decreased as the temperature rose; at 40 ℃ the optimum mass ratio of boiler slag to wastewater was 3.31 kg/m3. [Conclusion] The adsorption process with boiler slag as adsorbent is an economical and effective approach for treating rural domestic sewage. 展开更多
关键词 rural domestic sewage Boiler slag PHOSPHORUS Single grade adsorption KINETICS THERMODYNAMICS
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部