skip to contents.

*
*
*
*
-------------------------------------------------
Top of Form

Bottom of Form
*
*
*
*
*
*
* HOME
* Business Opportunities
* Business Matching Database (TTPP)
* Special Corner
* Water Pollution Control and Sludge Treatment (FY2006)

*
*
*
*
*
*
*
*
*
*
*
*
Contents  Chapter 1  Chapter 2  Chapter 3  Chapter 4  Chapter 5  Chapter 6 | | | -------------------------------------------------
4. Technologies/Products for Water Pollution Control and Water Purification | 4-3. Examples of Technologies/Products for Water Pollution Control and Water Purification | |
4-3-2. Category B: Water Pollution Control |
  | 1) Neutralization |
  | Wastewater has to be neutralized to adjust pH value to almost neutral level (5.8 - 8.6) so that it can be discharged into water body without causing any negative impact on the eco system. | |

  | [Automatic Neutralization Device] |
  | One of standard type products in this category is a product that integrates both an acid/alkali medicine injection device and a pH meter-based automatic pH adjustment device with a neutralization tank. (See Serial No.16) | |

  | 2) Aeration |
  | Aeration is used to increase dissolved oxygen by contacting air with water or to degas dissolved gases in water such as hydrogen sulfide and volatile organic materials. There are two ways for the removal of organic materials through aerobic treatment. One is to use a blower to feed air to in-water aeration devices. Another is to use mechanical agitation equipment to feed air. If air bubbles to be fed are finer, oxygen will dissolve into water more effectively. | |

  | [Micro Bubble Generator] |
  | Micronano bubbles have far finer particles than air bubbles generated by conventional fine air bubble aerators. In addition to having effects on the decomposition of organic materials, they can also effectively activate microorganisms. Micro bubbles, which stand in between conventional fine air bubbles and micronano bubbles in terms of bubble size, can stay in water very long and can pass transversely across water currents. Microbubble generators, which are smaller in size, have proven to be very effective in eliminating blue-green algae or preventing them from growing in reservoirs or other closed water bodies. (See Serial No.28) | |

  | 3) Accelerated Oxidation Process |
  | Various types of medicines, ozone and ultraviolet can be used for the oxidation of organic materials. The combination of two methods or more can improve the oxidation effects synergistically. | |

  | [Accelerated Oxidation Process Equipment] |
  | In the accelerated oxidation process, ultraviolet lamps in reactor's transparent tube irradiate ultraviolet beam at wastewater while using ultraviolet to generate ozone fed from air into the tube for the aeration of wastewater. One of widely used technologies is a method that uses oxidants to be injected into the reactor's inlet for the intake of raw water to create synergy effects of three different oxidation reactions. (See Serial No.04) | |

  | 4) Rotary Biological Contactor |
  | In rotary biological contactor method, a number of circular discs are attached to a rotating axis. Generally, the discs are made from reinforced plastic fiber with complex-shaped folding lines, where microorganisms can cling and...

-2 -2013 -3 1 10 1995 2 3 30 35 4 5 5.8 6 7 8 8.6 9 acceler acid acid/alkali across activ addit adjust adsorpt advanc aerat aerob agit air airflow alga alkali almost also altern among anaerob anim anoth appear appropri architectur ascend atmospher atmospheric-pressur attach automat axi b backwash base bay beam bed belt best biolog blade blower blue blue-green bodi boiler bottom break bubbl built busi c calor captur carbon case categori caus cell centrifug ceram chain channel chapter charcoal chemic circul circular cling clog close collid collis combin combust come commerci common compact compar complet complex complex-shap compost compulsorili concentr concern condit consist consumpt contact contactor contain contamin content continu control convent convert cool copyright corner cost creat crush current cut cylind cylinder-shap cylindr dam damag databas day decompos decomposit dega degre dehydr despit detach develop devic differ digest dimension dioxid direct disc discharg dispos dissolv dissolved-air distil domest doubl dri drier drum due easi easili eco effect effici element elimin emit end energi energy-effici entir environ equip evapor exampl excess exchang excreta expens extern extract facil factori fall fan faq far featur fed feed ferment fertil fiber fill film filter filtrat final fine finer fisheri fit fix float floatat floc flow flush flux fold food forgot form free front front-end fuel function fungus furnac fy2006 garbag gas gase general generat get go goe graviti green green-blu grow growth hazard heat heat-transf heavi high home hot human hydrodynam hydrogen hydrolysi hydrotherm id impact implement import improv impur in-wat inciner includ increas indirect industri inflow ingredi inject inlet inner insid intak integr intermedi intern introduc irradi japan jetro kiln lake lamp larg layer level like line link liquid live login long low lower machin machineri made main maintain mainten make mani manufactur map match materi maxim mechan medicin medium medium-s metal meter meter-bas methan method micro microbi microbubbl micronano microorgan mid mid-temperatur mill millimet move much multi multi-level natur necessari need negat neutral new no.01 no.02 no.04 no.06 no.10 no.14 no.15 no.16 no.21 no.22 no.23 no.24 no.26 no.27 no.28 no.31 no.32 no.33 no.34 no.35 non non-heat number nutrient odor oil oil-contain oil-contamin one one-unit opportun organ other oxid oxygen oyster ozon page paint panel part particl particular pass password ph pipe planar plastic plate polici pollut pond popular porous possibl power precious preserv press press-typ pressur prevent privaci process produc product propos proven purif purifi purpos put radial raw reaction reactor rear rear-end recent recov recycl red reduc regular reinforc relat remark remov repeat replac report requir reserv reservoir resourc reus revit right rise rotari rotat save sawdust scienc scratch screw seal see seri serial set sever sewag shape shed shell shock shred sign similar simultan singl site size skip sludg small smaller soil solar solubil solubl solvent space special spiral spread squeez ssl stand standard stay steam stir stop stream structur sulfid superson suppli surfac surplus suspend synergi synergist system tank technic technolog technologies/products temperatur term tertiari thermal thermophil thick thicken thin thin-film three three-dimension tide tilt toilet top tourism tower trade transfer transpar transport transvers treat treatment ttpp tube twice two type typic uasb ultraviolet underground uniqu unit up-flow upper us use user vacuum valu vapor various vertic voic volatil volum wall warp wash wast wastewat water wave way weft weight well whirlpool wide within without