Abstract:
PURPOSE: Provided is an SBR(Sequencing Batch Reactor) system with jet aeration/mixing system. In the SBR system, sludge produced in SBR is stored in a tank, and aerobic bacteria are inoculated into the sludge for decomposing organics of sludge in the aerobic and anoxic conditions. Aerobic and anoxic conditions are made by the jet aeration/mixing system. And residual sludge is mixed with oxidant for oxidation of sludge. Continuously oxidized sludge is recycled to SBR as organics and carbon sources of denitrification and phosphorus removal, and mixed with raw wastewater in the SBR by the jet aeration/mixing system. Consequently, sludge volume of SBR is reduced efficiently. CONSTITUTION: The jet aeration/mixing system includes: a jet-aerator for mixing and aerating wastewater; a pump for supplying wastewater to a pressurized liquid line(303); a blower for supplying air to a pressure air line(301); several inner nozzles(304) connected with the pressurized liquid line(303); several air ducts(302) equipped with the pressure air line(301); and a mixing chamber(305) for mixing liquid supplied from the pressurized liquid line(303) and air supplied from the pressure air line(301).
Abstract:
PURPOSE: Provided is a method for eliminating simultaneously phosphorous and nitrogen contained in organic sewage/wastewater in the same basin using an oxidation ditch process, wherein the method being advantageous in low operating cost due to the simplified facilities. CONSTITUTION: The method comprises the steps of (a) pretreating sewage/wastewater by eliminating solid deleterious matter from sewage/wastewater and equalizing the sewage/wastewater, (b) performing biologically nitrification, denitrification and dephosphorization simultaneously in an oxidation ditch, wherein the oxidation ditch is under a condition that BOD-MLSS(sludge) load is less than 0.03 kg kg·BOD/kg· MLSS·day, aeration/non-aeration period is 24-28 hr, MLSS is 3000-5000 mg/L and its depth is 1-3 m, (c) settling the sewage/wastewater in a settling tank, (d) overflowing supernatant after sterilizing it and drawing sediment (sludge), and (e) fertilizing the sludge after thickening the sludge and returning a portion of the sludge to the oxidation ditch under an aerobic condition after keeping it under anaerobic condition for 6-15 hrs so as for the sludge to release phosphorous.
Abstract:
PURPOSE: A process for removing nitrogen and phosphorus in advanced treatment of livestock wastewater and excrements is provided to biologically remove varieties of pollutants such as nitrogen and phosphorus causing eutrophication of lakes and marshes, rivers and the sea, and a sludge reduction system thereof is provided. CONSTITUTION: In a method for removing nitrogen and phosphorus in advanced treatment of livestock wastewater and excrements, and a sludge reduction system thereof, the advanced treatment method of livestock wastewater and excrements comprises a first treatment process of pretreating livestock wastewater and excrements, wherein collected wastewater is injected into a hopper(101) and passes through a screen(102) and a grit chamber(103), the wastewater passing the screen(102) and the grit chamber(103) is solid-liquid separated in a centrifugal separator(104) and injected into a storage tank(105); a second treatment process in which a certain amount of the homogenized wastewater is transferred from the storage tank(105) to a pre-liquid humus tank(106), a certain amount of wastewater passing the pre-liquid humus tank(106) is flown into a principal liquid humus tank(107) for performing biological aerobic/anoxic reaction before some of the wastewater is circulated into the pre-liquid humus tank(106); a third treatment process in which the wastewater completing biological reaction in the liquid humus tanks(106,107) is transferred to a mixing tank(108) where it is stored for a certain period of time, the wastewater passing the mixing tank(108) is transferred into a coagulation tank(109) for chemical precipitation treatment of impurities, a wastewater from the coagulation tank(109) is solid-liquid separated in a dehydrator(110); and a fourth treatment process in which the wastewater solid-liquid separated in the dehydrator(110) is supplied into a neutralization tank(101) for pH adjustment, suspended solids are removed from the pH adjusted wastewater in an up flow type filter(112), various pollutants are removed from the suspended solid removed water in a bio contact filter tank(113), pollutants are removed from a disk filter(114) on which a microfilter is mounted, the water passing the disk filter(114) is transferred to an ozone contact tank(115) for sterilization and COD removal, and a resulting water is supplied into an activated carbon adsorber(116) for advanced treatment of colors and pollutants such as heavy metals before being finally discharged through an effluence tank.
Abstract:
PURPOSE: Provided is an SBR(Sequencing Batch Reactor) system for reducing sludge production. In the SBR system, sludge produced in SBR is stored in a tank, and aerobic bacteria are inoculated into the sludge for decomposing organics of sludge in the aerobic and anoxic conditions. And residual sludge is mixed with oxidant for oxidation of sludge. Continuously oxidized sludge is recycled to SBR as organics and carbon sources of denitrification and phosphorus removal. Consequently sludge volume of SBR is reduced efficiently. CONSTITUTION: The system is characterized by the following steps: (a) discharging sludge produced in SBR at idle process of SBR; (b) storing sludge in the tank; (c) inoculating aerobic bacteria into the sludge and mixing the sludge with oxidant; and (d) recycling the sludge to SBR. Recycled sludge is used as organics and carbon sources for denitrification and phosphorus removal.
Abstract:
A filtration system includes production modules (305) which are mechanically coupled in series, and which contain filters that are fluidly coupled in parallel. Among the many different possibilities contemplated, each production module may advantageously contain not only a filter (314), but also flowpaths for feed fluid (334a), waste fluid (334b), and product fluid (334c) so that a series of coupled modules can be installed, accessed, and removed as single unit. It is further contemplated that coupled modules may be deployed in space efficient manner, such as by insertion into a deep or shall well, a tower, along the ground, into the side of a hill or mountain, or even under a road or parking lot. It is still further contemplated that adjacent production modules may be designed to mate with one another using a slip fit joint, and that the production modules may be maintained in mating relationship through connections to supporting cables or rods.
Abstract:
본 발명은 오염원으로 방치된 비위생 매립장을 정비ㆍ복원하여 유용한 토지(택지, 화회단지, 축사, 경작지, 공원, 체육시설, 주차장 등)로 재활용할 수 있다. 상기 비위생 매립장에서 유출되는 침출수로 토양 오염은 물론 지하수와 지표수 오염을 가중시키고 있다. 이러한 오염원을 근원적으로 제거하기 위하여 본 발명에서는 매립장 현장 조건에 따라 선택적으로 매립가스 포집관 및 공기 공급관을 설치하고 미생물과 공기를 주입하여 급속 안정화하는 공정과; 매립 쓰레기를 굴착하여 조대 입자 및 재활용 폐기물을 선별하는 공정과; 회전 스크린을 이용하여 토사를 선별하는 공정과; 다시 롤러 스크린에서 가연성과 불연성을 분리하고 후단에서 풍력으로 비닐류를 분리 압축 처리하는 공정과; 여기서 분리된 선별토사 및 지반 오염 토양을 오염 상태에 따라 열탈착 단계와; 생물반응기(drum bioreactor)를 이용하여 pH 및 수분을 조절하고 신균주 미생물(bacillus khr-10-mx 등)과 영양미네랄을 투입 반응하여 생물학적 토양정화 단계로부터; 비위생 매립장 정비ㆍ복원이 완성되고, 정화된 토양은 다시 매립하거나 복토재로 재활용 할 수 있다. 따라서 정비ㆍ복원된 매립장을 유용한 토지(택지, 화회단지, 축사, 경작지, 공원, 체육시설, 주차장 등)로 재활용 함과 동시 환경오염을 방지 할 수 있는 효과가 있게 되는 것이다.
Abstract:
PURPOSE: A repair and remediation process of insanitary landfill and reutilizing method of the landfill is provided, which can prevent diffusion of leachate pollutants and purifying treat contaminated soil by repair and remediation of insanitary landfill, so that prevent any environmental pollution relevant to landfill. The process can also maximize reutilization of landfill as a useful land. CONSTITUTION: The process is as follows: (i) divide landfill into a fixed depth and area, install landfill gas collecting pipe and air feeding pipe and feed new strain microorganism and air for rapid stabilizing; (ii) excavate landfill, separate gross particle and non-combustible waste and transport and feed by belt conveyor; (iii) screen and separate contaminated earth and sand and vinyl by passing the excavated waste through primary rotating screen and secondary rotating screen; (iv) excavate and separate screened earth and sand and contaminated soil in landfill and heat at 150-350 deg.C according to the contaminated state for thermal de-sorption; (v) excavate and separate screened earth and sand and contaminated soil in landfill and adjust to pH of 7-8, temperature of 20-50 deg.C and humidity of 40-50 % according to the contaminated state, feed new strain microorganism and nutrient for rapid bioreaction to remove various contaminants contained in soil from activated microorganism for biological contaminated soil remediation; and (vi) reutilize the repaired and remediated landfill as a useful soil.
Abstract:
이 발명은 생활하수를 회전원판법(RBC process) 원리에 의한 원판을 이용 미생물의 생물막을 원판표면에 형성시켜 오염된 생활하수가 미생물에 정화되어 수질검사 기준에 적합한 수질이 되고, 고액 분리된 슬럿지(Sludge)는 토양개량제 또는 양질의 유기질 비료가 되도록 하는 회전원판법에 있어서 하수 및 오폐수의 질소(N), 인(P) 제거방법에 관한 것이다. 종래법으로 처리가 되지 않던 질소(N), 인(P)을 손쉽게 제거하여 공업용수 또는 농업용수로 재활용할 수 있게 하고 처리시설의 간소화를 도모하여 시설비, 관리비등을 절감하여 국가재정 및 농촌소득증대에 기여하는 것을 목적으로 한다.
Abstract:
PURPOSE: A method for controlling combustion and a method for removing dioxin in a stoker incinerator is provided to control the density of oxygen and the fluctuation of displacement and to prevent exhaust of unburned gas. CONSTITUTION: A method for burning refuse in a stoker incinerator uses an automatic controlling system comprising a measuring equipment including a detecting sensor for temperature, density of oxygen, brightness, quantity of input of refuse, and thickness and a control device(19) adjusting temperature, the drive speed of grate, the feed rate of air, or the feed rate of refuse and then keeping the detecting value as the preset value according to the signal of power pulse. The exhaust gas caused by combustion is fed to the temperature-sensing tower and cooled instantaneously and then treated with adsorbent.
Abstract:
PURPOSE: A ceramic cleaner capable of maintaining excellent detergency over a long period of time without generating problems about drain pollution by positioning a ceramic cleaner containing a detergent component in a washing machine is provided which can be effectively used for clothes. CONSTITUTION: A ceramic cleaner(3) obtained by allowing a ceramic material comprising silicon oxide and aluminium oxide as a main component to support a compound such as sodium oxide, sodium hydroxide, potassium oxide, potassium hydroxide, silver, copper, sintering at 500 to 700°C, mixed with sodium metaphosphate and sintered at less than 400°C is inserted into a vessel(2) with holes and placed in a washing machine.