Abstract:
PURPOSE: Provided is a stream water purification apparatus using non-woven fabric filter module that has higher porosity and larger specific surface area than conventional one to increase treatment efficiency. CONSTITUTION: The apparatus comprises a contact oxidation zone(2) with contact filter media(4) made of non-woven fabric therein and a sludge port(2a) at a lower portion thereof for discharging sludge therethrough, a bubble generator installed at a side surface of the contact oxidation zone(2), a settling zone(8) provided at a side of the contact oxidation zone(2) for settling remained contaminant contained in outflow of the contact oxidation zone(2), an air lifter(9) installed at a portion of the contact oxidation zone for discharging sludge in the contact oxidation zone and the settling zone out to a sludge discharging pipe.
Abstract:
PURPOSE: A manhole repair method using a manhole repair device is provided to reduce the term of repair works for a manhole and to prevent an inflow of rainwater and wastewater. CONSTITUTION: The manhole repair method using a manhole repair device comprises the steps of: diverting water by installing a manhole(200) to be repaired, an intake pipe(201), a drainpipe(202) and a connection pipe(203); installing a stiffening tube(300) filled up with thermosetting resins to the inner wall of the manhole(200); installing an expansion tube(400) having the same size and shape as the manhole into the manhole(200) attached with the stiffening tube(400); installing and fixing a manhole repair device connected with the neck of the expansion tube(400) into the upper part of an opening of the manhole(200); hardening the resins filled in the stiffening tube(300) by adding temperature and pressure to the expansion tube(400), then adhering closely to the inner wall of the manhole(200); and finishing by separating the expansion tube(400) and the manhole repair device from the manhole(200), then removing the connection pipe(203) installed to divert water.
Abstract:
PURPOSE: A lining member of deformed cross section structure and a non-excavation stream tube repair method using the lining member are provided to prevent the deposition of sewage by securing a minimum flow rate of foul water within a stream tube. CONSTITUTION: The lining member(200), inserted into a stream tube(10) having a certain diameter, has a deformed cross section(20) for reducing a flowing water passage width(W) on the lower part thereof in order to increase a passage speed of the flowing water. The deformed cross section is formed by installing one or two pipes(30) at one or both sides of the lower part of the stream tube between the stream tube and the lining member.
Abstract:
The present invention relates to an apparatus for controlling bad smell by spraying underground water and a method for controlling bad smell and, more specifically, an apparatus for controlling bad smell, which is provided to prevent generation of bad smell or remove the bad smell by using hydrogen sulfide, a leading cause of bad smell generated inside a sewage pipe, which is soluble in water and which reacts to iron components and by spraying underground water, thereby promoting a pleasant environment by removing displeasure caused by bad smell and, in particular, preventing an explosion accident caused by gas accumulated inside a manhole; and a method for controlling bad smell. The present invention provides the apparatus for controlling bad smell in a sewage pipe or a manhole connected to the sewage pipe by spraying underground water, wherein the apparatus comprises an underground water pumping unit; an underground water supply line supplying underground water pumped by the underground water pumping unit; and a water spray pipe connected to the underground water supply line and spraying water into a space in which bad smell is generated; and the method for controlling bad smell, which is provided to control bad smell in a space inside a sewage pipe or a manhole connected to the sewage pipe where bad smell is generated by supplying and spraying underground water to the space.
Abstract:
본 발명은 하수도 맨홀 및 우수받이에서의 물리적 포집에 의한 악취 제어 장치에 관한 것으로, 더욱 상세하게는 맨홀 또는 우수받이에서 발생하는 악취의 배출을 방지 또는 감소시키도록 제어하여 악취에 의한 불쾌감을 없애 쾌적한 환경을 조성할 수 있고, 특히 맨홀에 축적되는 가스에 의한 폭발 사고 등을 미연에 방지할 수 있도록 한 하수도 맨홀 및 우수받이에서의 물리적 포집에 의한 악취 제어 장치를 제공하는데 그 목적이 있다. 상기 목적을 달성하기 위한 본 발명은 하수도 맨홀 또는 우수받이에서의 악취를 제어하기 위한 악취 제어 장치로서, 맨홀 또는 우수받이가 하수관과 연결되는 연결부 입구에 설치되며, 하수 흐름 방향으로만 회동가능한 악취 차단 부재를 포함하는 악취 제어 장치를 제공한다.
Abstract:
Habitat for providing an ecological environment for fishes is provided. Multistage fish shelter includes a plurality of shelves where fishes can spawn and hatch or hibernate. Each shelf provides different inhabitation environments in consideration to the inhabitation conditions to the preference to various kinds of fishes, and a muddy-stream blocking water gate blocking a muddy stream when water level of the inside of a body where multistage fish shelter is installed reaches a predetermined height. The present invention provides proper environments of inhabitation environments for structural particles of an underwater ecosystem and fishes for the structural particles of an underwater ecosystem and fishes which inhabit in an inhabitation environment damaged by artificial activities in a freshwater area or which are not sufficient, thereby providing an ecological environment for fishes to form an optimal inhabitation environment for structural particles of the underwater ecosystem by providing environments to stably spawn, hatch, flee for refuge from floods and natural enemies such as birds, and a resting place.