scholarly journals WATER QUALITY PURIFICATION BY THE SYMBIOSIS OF USEFUL MICROBIAL GROUP IN THE POROUS CONCRETE BLOCK AND DENITRIFYING BACTERIA IN SOIL

2008 ◽  
Vol 52 ◽  
pp. 1291-1296
Author(s):  
Nobuhiro MATSUNAGA ◽  
Sousuke MASUDA ◽  
Taishi NAKAMUTA ◽  
Takahisa TOKUNAGA ◽  
Shinichiro YANO ◽  
...  
Keyword(s):  
Water Quality ◽  
Concrete Block ◽  
Denitrifying Bacteria ◽  
Porous Concrete ◽  
Microbial Group

scholarly journals Water quality and quantity assessment of pervious pavements performance in experimental car park areas

2014 ◽  
Vol 69 (7) ◽  
pp. 1526-1533 ◽  
Author(s):  
Luis A. Sañudo-Fontaneda ◽  
Susanne M. Charlesworth ◽  
Daniel Castro-Fresno ◽  
Valerio C. A. Andres-Valeri ◽  
Jorge Rodriguez-Hernandez
Keyword(s):  
Water Quality ◽  
Drainage System ◽  
Concrete Block ◽  
Concrete Surface ◽  
Basic Oxygen Furnace ◽  
Total Petroleum Hydrocarbons ◽  
Porous Concrete ◽  
Base Materials ◽  
Bivariate Correlation ◽  
Car Park

Pervious pavements have become one of the most used sustainable urban drainage system (SUDS) techniques in car parks. This research paper presents the results of monitoring water quality from several experimental car park areas designed and constructed in Spain with bays made of interlocking concrete block pavement, porous asphalt, polymer-modified porous concrete and reinforced grass with plastic and concrete cells. Moreover, two different sub-base materials were used (limestone aggregates and basic oxygen furnace slag). This study therefore encompasses the majority of the materials used as permeable surfaces and sub-base layers all over the world. Effluent from the test bays was monitored for dissolved oxygen, pH, electric conductivity, total suspended solids, turbidity and total petroleum hydrocarbons in order to analyze the behaviour shown by each combination of surface and sub-base materials. In addition, permeability tests were undertaken in all car parks using the ‘Laboratorio Caminos Santander’ permeameter and the Cantabrian Portable Infiltrometer. All results are presented together with the influence of surface and sub-base materials on water quality indicators using bivariate correlation statistical analysis at a confidence level of 95%. The polymer-modified porous concrete surface course in combination with limestone aggregate sub-base presented the best performance.

scholarly journals WATER QUALITY PURIFICATION BY A POROUS CONCRETE BLOCK INCLUDING BACILLUS SUBTILIS NATTO GROUP

2007 ◽  
Vol 51 ◽  
pp. 1415-1420
Author(s):  
Nobuhiro MATSUNAGA ◽  
Sousuke MASUDA ◽  
Taishi NAKAMUTA ◽  
Takahisa TOKUNAGA ◽  
Shinichiro YANO ◽  
...  
Keyword(s):  
Water Quality ◽  
Bacillus Subtilis ◽  
Concrete Block ◽  
Porous Concrete ◽  
Bacillus Subtilis Natto

scholarly journals Effects of Supplement of Marichromatium gracile YL28 on Water Quality and Microbial Structures in Shrimp Mariculture Ecosystems

Genes ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 40
Author(s):  
Liang Cui ◽  
Bitong Zhu ◽  
Xiaobo Zhang ◽  
Zhuhua Chan ◽  
Chungui Zhao ◽  
...  
Keyword(s):  
Water Quality ◽  
16S Rrna ◽  
Relative Abundance ◽  
Animal Health ◽  
Denitrifying Bacteria ◽  
Nitrite Reduction ◽  
16S Rrna Genes ◽  
Rrna Genes ◽  
Sequencing Analysis ◽  
Shrimp Culture

The elevated NH3-N and NO2-N pollution problems in mariculture have raised concerns because they pose threats to animal health and coastal and offshore environments. Supplement of Marichromatium gracile YL28 (YL28) into polluted shrimp rearing water and sediment significantly decreased ammonia and nitrite concentrations, showing that YL28 functioned as a novel safe marine probiotic in the shrimp culture industry. The diversity of aquatic bacteria in the shrimp mariculture ecosystems was studied by sequencing the V4 region of 16S rRNA genes, with respect to additions of YL28 at the low and high concentrations. It was revealed by 16S rRNA sequencing analysis that Proteobacteria, Planctomycete and Bacteroidetes dominated the community (>80% of operational taxonomic units (OTUs)). Up to 41.6% of the predominant bacterial members were placed in the classes Gammaproteobacteria (14%), Deltaproteobacteria (14%), Planctomycetacia (8%) and Alphaproteobacteria (5.6%) while 40% of OTUs belonged to unclassified ones or others, indicating that the considerable bacterial populations were novel in our shrimp mariculture. Bacterial communities were similar between YL28 supplements and control groups (without addition of YL28) revealed by the β-diversity using PCoA, demonstrating that the additions of YL28 did not disturb the microbiota in shrimp mariculture ecosystems. Instead, the addition of YL28 increased the relative abundance of ammonia-oxidizing and denitrifying bacteria. The quantitative PCR analysis further showed that key genes including nifH and amoA involved in nitrification and nitrate or nitrite reduction significantly increased with YL28 supplementation (p < 0.05). The supplement of YL28 decreased the relative abundance of potential pathogen Vibrio. Together, our studies showed that supplement of YL28 improved the water quality by increasing the relative abundance of ammonia-oxidizing and denitrifying bacteria while the microbial community structure persisted in shrimp mariculture ecosystems.

scholarly journals A study on the flow-resistance to planted porous concrete block

1996 ◽  
Vol 40 ◽  
pp. 1009-1014
Author(s):  
Kazutoshi KAN ◽  
Tuyoshi HORIGUCHI ◽  
Hideaki TARE
Keyword(s):  
Flow Resistance ◽  
Concrete Block ◽  
Porous Concrete

UK research into the performance of permeable pavement, reservoir structures in controlling stormwater discharge quantity and quality

1995 ◽  
Vol 32 (1) ◽  
pp. 63-69 ◽  
Author(s):  
C. J. Pratt ◽  
J. D. G. Mantle ◽  
P. A. Schofield
Keyword(s):  
Water Quality ◽  
Field Study ◽  
Concrete Block ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Permeable Pavement ◽  
Antecedent Conditions ◽  
Surface Contaminants ◽  
Stone Type

The paper reports on a field study on a permeable, reservoir pavement constructed in 1986 at Nottingham, UK; surfaced with permeable, concrete block paving; and with a different sub-base stone-type in each of four reservoirs, from which the discharges were monitored for quantity and water quality. Hydrological relationships involving rainfall, outflow, outflow duration and antecedent conditions are presented. Water quality parameters are shown to be stable in value after some six months, by which time surface contaminants on the sub-base stone had been washed out of the construction. As outflow volume is reduced and water quality parameters (SS and Pb) are low in value, pollutant outflow loadings are significantly lower than with traditional, impermeable surfaces.

scholarly journals Experimental results of the hydrological performance of a permeable pavement laboratory rig

2020 ◽  
Vol 69 (3) ◽  
pp. 210-223 ◽  
Author(s):  
Vasiliki G. Ioannidou ◽  
Scott Arthur
Keyword(s):  
Water Quality ◽  
Green Infrastructure ◽  
Suspended Solids ◽  
Concrete Block ◽  
Experimental Results ◽  
Storm Water ◽  
Water Runoff ◽  
Retention Capacity ◽  
Quality Aspects ◽  
The Impact

Abstract There is an increasing number of everyday flood incidents around the world, the impact of which poses a challenge to society, the economy and the environment. Under the Water Framework Directive (2000/60/EC), green infrastructure through the use of sustainable drainage systems (SuDS) is the recommended policy to manage and treat storm water runoff. Given the limited published experimental information on permeable interlocking concrete block pavements (PICPs), this paper presents novel results from an experimental laboratory study on a permeable interlocking concrete block pavement rig, investigating the short-term hydrology of the pavement, and water quality aspects related to the retention capacity of suspended solids (SS) through the pavement structure. Results of the volume analysis demonstrate high capability of the permeable structure to reduce the concentration time and attenuate the storm. Water quality testing was employed mainly as an indicator of the tendency of the suspended solids retention by the structure, indicating increasing tendency in the sediment mass retention progressively after each rainfall event. Experimental results obtained in the present study have direct application on the implementation of PICPs in car parking lots, urbanised pavement structures and pedestrianised walkways.

scholarly journals Biofouling to the porous concrete functioning as sandy beach and water quality purification.

1992 ◽  
Vol 21 (2) ◽  
pp. 138-141
Author(s):  
Motoharu TAMAI ◽  
Akira KAWAI ◽  
Hideo KIDA ◽  
Susumu YAMOCHI
Keyword(s):  
Water Quality ◽  
Sandy Beach ◽  
Porous Concrete
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