Results 21 to 30 of about 187,670 (280)
Gongye shui chuliStable operation of wastewater plants under overload has been a hot spot of concern for researchers，and efficient nitrogen and phosphorus removal is a difficult point in the process of stable operation.
WANG Ronghong +6 more
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Energies, 2020 This study aimed to determine the effect of the low-temperature conditioning of excess dairy sewage sludge using solidified carbon dioxide on the efficiency of methane fermentation.
Joanna Kazimierowicz +2 more
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Sewage, and the Bacterial Purification of Sewage [PDF]
Public Health, 1900 THE practicability of effecting the purification of town sewage on the large scale by bacterial agency has now been abundantly proved. The process has passed beyond the experimental stage, and must now be acknowledged as the only method which can convert the putrescible matter of sewage on the large scale into inoffensive and harmless substances ...
openaire +3 more sources
Effectiveness analysis of a wastewater treatment plant retrofitted by MBBR in a cold plateau region
Gongye shui chuliTo further implement environmental protection policies on the Qinghai-Tibet Plateau, a wastewater treatment plant at an altitude of 2 200 m with a capacity of 85 000 tons per day was retrofitted by moving bed biofilm reactor(MBBR) process.
LI Na, REN Qiping, FAN Hang
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A 2006 Survey of Drinking Water Microbial Quality in Rural Areas in IRAN (Limitations, Challenges, and Opportunities) [PDF]
آب و فاضلاب, 2008 In the first quarter of the year 2007, the number of rural laboratories had grown from 90 units in the year 2003 to 166 units, showing a 87.93% growth while the quality parameters in the years 2004 and 2006 increased from 90.13 to 91.43% for residual ...
Majid Ghannadi, Mohammad Reza Mohebbi
doaj
E3S Web of Conferences, 2017 The aim of the study was to determine the effect of the Actinomycetes proliferation in the activated sludge on the quality of the treated wastewater and the sewage receiver. The river which is the sewage receiver flows near the wastewater treatment plant.
Bezak-Mazur Elżbieta +3 more
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The bioavailability of cadmium from sewage sludge-amended soils. [PDF]
, 1999 PhDCadmium is a potentially toxic trace element present, at low concentrations, in a variety of environmental media. The processing of waste-waters produces sewage sludge, in which cadmium may be present at high concentrations.
Jackson, Andrew Philip
core +4 more sources
Effect of Saline Water Irrigation and Dilution of Salts on Water Management Water in Green Pepper
Pakistan Journal of Engineering & Technology, 2021 Irrigation has an important role in food production worldwide by increasing crop quality and production. As such, the use of fresh water for agricultural or vegetable products is declining in quantity and quality over the coming decades.
Muhammad Arshad +4 more
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Water‐Soluble, Enzyme‐Degradable, and Hydrolyzable STAR Particles for Enhanced Drug Delivery to Skin
Advanced Healthcare Materials, EarlyView.Biodegradable polymer STAR particles fabricated from water‐soluble, enzyme‐degradable, and hydrolyzable materials significantly enhance intradermal drug delivery. By replacing conventional non‐biodegradable materials, these STAR particles address environmental and safety concerns while expanding the potential of skin‐based drug delivery technologies ...
Aydin Sadeqi +2 more
wiley +1 more source
Jingshui jishu【目的】膜生物反应器(MBR)工艺因其出水水质好和占地面积小等优点在城镇污水处理领域(尤其是地下污水处理厂)应用广泛，但膜材质固有缺陷引发的长期运行问题(高断丝率、膜通量衰减、出水水质波动),成为制约MBR发展的首要影响因素，且导致其工艺投资及运行成本均较高。【方法】华南地区某市政污水厂MBR运营人员通过优化工艺调控策略，将设计寿命为5年的中空纤维超滤膜的实际运行寿命延长至10年，且该批MBR出水水质优于一级A标准，并未出现明显的截留效能下降问题 ...
CHEN Zebin, ZHANG Yingyu, TANG Xia
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