• Title, Summary, Keyword: Suspended solid

Search Result 400, Processing Time 0.047 seconds

Monitoring and Management of Contaminated Suspended Solid (오염 부유물질의 관측과 관리)

  • Kim, Geonha
    • Journal of Korean Society on Water Environment
    • /
    • v.27 no.6
    • /
    • pp.932-937
    • /
    • 2011
  • Main objectives of this paper were; firstly, to explain impacts of suspended solid in the water body on the relationship between water quantity and water quality; secondly, study on the inter-relationship between organic materials, nutrients, pathogens, and suspended solids considering eco-friendly water resources. Relationship between water quality and water quantity is not easy to understand as it includes physicochemical-biological reactions and diffuse pollutions. Especially, suspended solid makes water resource management difficult. Eroded soil in the upper land transported to the downstream by water flows carrying biological and physicochemical information and sedimented in the downstream. As sediment scoured under high flow condition and environmental change, suspended solid and sediment should be emphasized for understanding the inter-relationship between water quality and water quantity. Knowledge gaps between known monitored data and management of suspended solid were identified as well for future study.

A Study on Design of Containment Area Considering Suspended Solid Sedimentation (부유물 침전을 고려한 준설투기장 설계에 관한 연구)

  • Jee, Sunghyun;Huh, Byungjoo;Chun, Byungsik
    • Journal of the Korean Geoenvironmental Society
    • /
    • v.11 no.8
    • /
    • pp.57-63
    • /
    • 2010
  • For optimum scale design of containment area, a series of laboratory tests using column were performed in this study as followings; sedimentation test and self-weight consolidation test for dredged soil, and suspended solid concentration test for supernatant. Containment area has been designed and evaluated, based on field condition and concentration of suspended solid of effluent water. In addition, the relation between width of containment area and target concentration of suspended solid was analyzed. The results show that concentration of suspended solid decreases as the width of containment area decreases and the length of containment area increases. It was also observed that influence of change in ponding depth should be considered to predict the change in suspended solid concentration in supernatant discharged as disposal is conducted; the lower target suspended solid concentration of effluent water, the more important.

Analysis of Suspended Solid Generation with Rainfall-Runoff Events in a Small Forest Watershed (산림 소유역에서 강우-유출에 따른 부유토사 발생 특성 분석)

  • Kim, Jae-Hoon;Choi, Hyung-Tae;Lim, Hong-Geun
    • Journal of Environmental Science International
    • /
    • v.24 no.12
    • /
    • pp.1617-1627
    • /
    • 2015
  • This study was carried out to investigate the characteristics of suspended solid concentration in small forest watershed, Hwacheon, Gangwondo. For five rainfall events from July 2013 to August 2013, rainfall, discharge, and suspended solid load has been measured. The results showed that the fist flush effect was observed for suspended solid in each rainfall event, sediment rating curve was obtained with $y=30.029x^{1.573}$ at rising limb and $y=12.902x^{1.8827}$ at falling limb, and EMC (event mean concentration) of suspended solid was calculated to 9.4 mg/L. EMC was compared to the values from the watershed that has various land use types and EMC from forest watershed was much lower that from the crop, paddy or low covered forest watershed.

The Effects of Skin Contact Time and Suspended Solid on The White Wine Quality (Skin Contact와 Suspended Solid가 백포도주 품질에 미치는 영향)

  • Rho, Tae-Uk;Kim, Chanjo;Sung, Chang;Moon, Youngja;Kim, Bong-Nan;Oh, Manjin
    • Korean Journal of Agricultural Science
    • /
    • v.24 no.2
    • /
    • pp.290-297
    • /
    • 1997
  • Danored is considered as the most favorable grape variety for national wine manufacturing in terms of sugar, organic acid contents, annual production amount, as well as quality control convenience after harvest. This study was canied out to know the influence of suspended solid(SS) and skin contact time(SCT) with Danored variety on the white wine quality. The results are summarized as follows; 1. Suspended solid and skin contact time did not greatly influence on the chemical composition of Danored juice. But skin contact time provided slightly increaseness to the content of phenol compounds 2. Suspended solid accelerated fermentation rate of white wine manufacturing. Although the content of suspended solid are less amount than 0.3% in must, wine fermentation was completed to dryness in concentration of sugar. 3. When the content of suspended solid was around 3%, higher alcohol in white wine was increased by the 20%. This result is relatively small increasement compared to the other reported results. 4. Because Danored contained less amount of phenol compounds comparison with other grape varieties, browning capacity in white wine was much favorable to quite low concentration. Especially, phenolic compounds was decreased remarkably as one of fermentation characteristics of Danored variety. 5. As a result of sensory evaluation, wine quality was A-1> B-1> A-2> B-2 in its favorable ranking orders. It was so concluded that A-1 might be the most acceptable one from this study.

  • PDF

Removal of Fine Suspended Solids and Soluble Heavy Metals in H Mine Drainage using Settling and Filtering : Field Application (침전 및 여과를 통한 H 광산배수 내 미세부유물질 및 용해성 중금속의 제거 : 현장실험을 중심으로)

  • Oh, Minah;Kim, WonKi;Oh, Seungjin;Kim, DukMin;Lee, SangHoon;Lee, Jai-Young
    • Journal of Soil and Groundwater Environment
    • /
    • v.18 no.7
    • /
    • pp.54-62
    • /
    • 2013
  • Fine suspended solids and soluble heavy metals generated from mine drainage could destroy environment as the aesthetic landscapes, and depreciate water quality. Therefore, this research is focused on process development applied the actual field for controlling fine suspended solids and heavy metals, and so that bench-scale tests were performed for field application based on advanced researches. The field of mine drainage in this research was in H mine located Taebaek-si, Gangwon-do. The inclination plates were mounted 2 kinds of arrangement (octagon and radial types) in circle type settling basin. The inclination plates could be helped to settle of suspended solids; decreased 34% of suspended solids and 50% of turbidity in effluent. Radial type of inclination plates showed the results that is more efficient to settle of suspended solids (average to 3.45 mg/L) compared to octagon type. In the experiments to decrease retention time of mine drainage in settling basin from 6 hrs to 1.5 hrs, suspended solid concentration was exceeded to 30 mg/L as the standard for suspended solid at 10 days after the operation under tha retention time of 3hrs and 1.5hrs. In the tests for filtration, granular activated carbons were indicated the better effective to filtering and absorption of fine suspended solid and soluble heavy metals than anthracite.

Study on magnetic separation of waste water using superconducting magnet (초전도 전자석을 이용한 제철소 폐수처리용 자기분리 연구)

  • Ha, Dong-Woo;Kim, Tae-Hyung;Oh, Sang-Soo;Ha, Hong-Soo;Park, Sung-Kook;Lee, Sang-Gil;Roh, Yu-Mi
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
    • /
    • /
    • pp.87-88
    • /
    • 2006
  • It is needed several large reservoirs and long time in order to remove suspended solid like steel fines and iron oxide at steel making factory. If removing rate of suspended solid in rolling coolant is improved, the productivity of working process can be increased and the area of reservoir can be reduced. Pre-treatment to add extra magnetization of suspended solid was studied Iron hydroxide and electrolytic dissociation were used for pretreatment. High gradient magnetic separation (HGMS) system was used for removing of magnetized suspended solid. Removing ratio showed over than 99% in the coolant containing magnetic fines. Magnetic properties of suspended solid were investigated after mixed with Al2(SO2)3 and organic flocculant by using electrochemical treatment.

  • PDF

Serial Particle Size Fractionation and Water Quality in a Recirculating Aquaculture System for Eel

  • Lee, Jin-Hwan
    • Fisheries and aquatic sciences
    • /
    • v.13 no.2
    • /
    • pp.133-139
    • /
    • 2010
  • The effects of suspended solids size on culture water quality were determined in a commercial recirculating aquaculture system (RAS) for Japanese eel, Anguilla japonica. The particulate phase of the culture water was serially divided into six size fractions using 300, 200, 100, 75, 45, and 26 ${\mu}m$ pore size stainless sieves. The total, dissolved, and particulate nitrogen and phosphorus, and suspended solids for each fraction were determined. The concentration ranges in the fractions were: total nitrogen, 164-148 mg $L^{-1}$; total phosphorus, 20.4-15.5 mg $L^{-1}$; and total suspended solids, 8.1-6.1 mg $L^{-1}$. The concentration of total nitrogen and total phosphorus decreased significantly (P<0.05) with a 26 ${\mu}m$ and 200 ${\mu}m$ filter pore size, respectively. Nutrients from dissolved organic substances were much higher than from particulates. Analysis of particle size fractionation and its effects on water quality is useful to estimate removal efficiencies of a commercial effluent screening device for solid management and development of solid removal systems.

Suitability Evaluation of Containment Area Design Considering Suspended Solid Sedimentation (부유물 침전을 고려한 준설투기장 설계의 적합성 평가)

  • Jee, Sunghyun;Kim, Chanki;Jung, Hyuksang;Chun, Byungsik
    • Journal of the Korean Geoenvironmental Society
    • /
    • v.11 no.10
    • /
    • pp.41-48
    • /
    • 2010
  • In this study, grain size distribution of dredged soil and suspended solid distribution of supernatant in containment area were measured and compared with design prediction for suitability evaluation on prediction of suspended solid concentration of supernatant in conventional design of containment area. In addition to that, relationship were also analyzed between current velocity and suspended solid concentration of supernatant. Evaluation results show a relatively good agreement between field measurement and design prediction. On contrast, field measurement and design prediction show a quite different value each other in the early stage of dredging or at a point that current velocity increases. It is believed that this is due to that conventional design method of containment area does not account for ponding depth and current velocity which change sensitively with dredging period. Since current velocity and distribution of suspended solid concentration measured simultaneously show a similar trend, it is observed that there exists a close relationship between current velocity and distribution of suspended solid concentration. Therefore, a new design method for containment area, which can consider sedimentation of suspended solid that changes with interface height of dredged soil, ponding depth, current speed of supernatant, is necessary in order to predict the situation change of containment area more precisely.

Settling and Filtering Process for the Treatment of Fine Suspended Solids and Soluble Heavy Metals in H Mine Drainage (H 광산배수 내 미세부유물질 및 용해성 중금속의 제거를 위한 침전 및 여과 공법에 관한 연구)

  • Oh, Minah;Kim, WonKi;Kim, DukMin;Lee, SangHoon;Lee, Jai-Young
    • Journal of Soil and Groundwater Environment
    • /
    • v.17 no.6
    • /
    • pp.102-111
    • /
    • 2012
  • Fine suspended solids generated effluence from treatment process of mine drainage could destroy environment as the aesthetic landscapes, and depreciate water quality. Therefore, the purpose of this research is focused on process development applied the actual field for controlling fine suspended solids and heavy metals, and so lab-scale test was performed for inducement of basic data. The mine drainage used in this research was sampled in H mine located Jeongseon-gun, Gangwon-do. Concentration of suspended solid, arsenic, iron and manganese was exceeded the standard of contaminant limitation for the clean water, and particle size of suspended solid was less than 10 m as fine particle. Although hydraulic retention time of mine drainage for effective settling was required more than 6 hours, hydraulic retention time would be increased in winter season when the settling efficiency could be reduced because of viscosity decreasing. Moreover, installed inclination plate helped to increase settling efficiency of suspended solid about 48 %. Filtering media that was the most effective removal of suspended solids and heavy metal was decided granular activated carbon of 1~2 mm was the optimal size.

Evaluation of Regression Models in LOADEST to Estimate Suspended Solid Load in Hangang Waterbody (한강수계에서의 부유사 예측을 위한 LOADEST 모형의 회귀식의 평가)

  • Park, Youn Shik;Lee, Ji Min;Jung, Younghun;Shin, Min Hwan;Park, Ji Hyung;Hwang, Hasun;Ryu, Jichul;Park, Jangho;Kim, Ki-Sung
    • Journal of The Korean Society of Agricultural Engineers
    • /
    • v.57 no.2
    • /
    • pp.37-45
    • /
    • 2015
  • Typically, water quality sampling takes place intermittently since sample collection and following analysis requires substantial cost and efforts. Therefore regression models (or rating curves) are often used to interpolate water quality data. LOADEST has nine regression models to estimate water quality data, and one regression model needs to be selected automatically or manually. The nine regression models in LOADEST and auto-selection by LOADEST were evaluated in the study. Suspended solids data were collected from forty-nine stations from the Water Information System of the Ministry of Environment. Suspended solid data from each station was divided into two groups for calibration and validation. Nash-Stucliffe efficiency (NSE) and coefficient of determination ($R_2$) were used to evaluate estimated suspended solid loads. The regression models numbered 1 and 3 in LOADEST provided higher NSE and $R_2$, compared to the other regression models. The regression modes numbered 2, 5, 6, 8, and 9 in LOADEST provided low NSE. In addition, the regression model selected by LOADEST did not necessarily provide better suspended solid estimations than the other regression models did.