公开(公告)号：JPS62250998A

公开(公告)日：1987-10-31

申请号：JP9237886

申请日：1986-04-23

Applicant: AGENCY IND SCIENCE TECHN ,  IKEDA BUSSAN CO ,  TSUBURA KOUEN SETSUBI KK

Inventor： TOMITA SHIGERU ,  ABE KEIJI ,  TOSHIDA SADATOSHI ,  AKIYAMA TAKEO ,  TSUKADA NORIO

IPC: A01G31/00 ,  C02F3/32

Abstract: PURPOSE:To protect the titled fence by joining plural blocks consisting of a floating body by means of both a rope for joining and an anchor rope for stationary fixing. CONSTITUTION:Floating bodies 1 such as expanded polystyrene and polypropylene are arranged in two rows at a proper interval via a resin pipe 4. A resin set 2b becoming a bottom plate is provided between these floating bodies 1 and a coconut shell fibrous network body 5 becoming a planting bed of a hydrophyte 11 is fixed on the resin net 2b. The outer peripheries of the floating bodies 1 are covered by the resin net 2b and both ends of the floating bodies 1 are covered by a polyvinyl chloride sheets 3 and a block consisting of the floating bodies 1 arranged in two rows is formed. Ropes 7a are perforated in the axial directions of respective floating bodies 1 of the block and shackles 8 are fitted to the tips of the ropes 7a and plural pieces of blocks are respectively joined in proper length by the shackles 8. Thereby underwater enriched nutrient is reduced and the generation of phytoplankton is prevented.

公开(公告)号：JPS62182308A

公开(公告)日：1987-08-10

申请号：JP2287886

申请日：1986-02-06

Applicant: AGENCY IND SCIENCE TECHN ,  IKEDA BUSSAN CO

Inventor： TOMITA SHIGERU ,  ABE KEIJI ,  TOSHIDA SADATOSHI ,  AKIYAMA TAKEO

IPC: E02B15/00

Abstract: PURPOSE:To prevent the growth and diffusion of phytoplankton by connecting several floats covered with a resinous net and a coconut husk fiber net formed by weaving twisted yarns of coconut husk fibers into a fine mesh form in an adequate length. CONSTITUTION:A float 4 of an angular or circular column form, made of polystyrene or polypropylene, is covered with a resinous net 2, a coconut husk fiber net 6 is attached to the circumference by a rope 1, and a shackle 3 is attached to the top of float 4. Anchor ropes 8 for fixing the float 4 at a fixed position are tensely provided to both ends of the lower part of the float 4. Plural floats 4 are connected in an adequate length by the shackle 3 and set to the bottom of swamp, lake, or river by the ropes 8. Since the seeds of plants adhere to the nets 6 and grow by absorbing nitrogen, phosphorus, and potassium in water, eutrophic substances in water are reduced and therefore, the growth of phytoplankton can be prevented.

公开(公告)号：JPS6283087A

公开(公告)日：1987-04-16

申请号：JP22337685

申请日：1985-10-07

Applicant: AGENCY IND SCIENCE TECHN

Inventor： OGAWA HIROTSUGU ,  TERAJIMA KAZUO ,  TOMITA SHIGERU

IPC: C02F1/463 ,  B01D17/06 ,  C02F1/46 ,  C02F1/465

Abstract: PURPOSE:To easily separate an oil component, by decomposing the emulsifier in waste water containing emulsified oil by electrolytic oxidation to allow the surface activity thereof to disappear. CONSTITUTION:Waste water containing emulsified oil is introduced into an electrolytic cell wherein an anode is equipped with lead dioxide and a cathode is equipped with an insoluble electrode and electrolytic voltage of 5-20V is applied to both electrodes at temp. of ambient temp.-60 deg.C. By this method, an emulsifier is decomposed and an oil component can be easily separated. Because the oil component insoluble in water receives no electrolytic oxidation, treatment can be performed regardless of the kind of the emulsifier and the kind of the oil component.

公开(公告)号：JPS6283011A

公开(公告)日：1987-04-16

申请号：JP22337785

申请日：1985-10-07

Applicant: AGENCY IND SCIENCE TECHN

Inventor： TOMITA SHIGERU ,  ABE KEIJI ,  TERAJIMA KAZUO

IPC: C02F1/52 ,  A01N59/06 ,  B01D21/01

Abstract: PURPOSE:To prevent phytoplankton from flowing out into rivers or streams and to keep away environmental pollution by spreading the sedimentation agent consisting mainly of aluminium, calcium and silicon over lakes and waters, and catching the floating phytoplankton to be sedimented down to the bottom of water. CONSTITUTION:The sedimentation agent is used for the sediment of water weeds including phytoplankton down the surface of water, which results in the cohesive effect of water weeds as well as the sedimentation effect of cohesive substance. The sedimentation agent is a composition consisting of aluminium sulphate as cohesive agent for floatings, calcium carbonate having cohesive and sedimentation effects, and silicon compound (kaolin acid white clay, diatomite, talc and Kanuma soil) as sedimentation agent. The weight composition ratio of aluminum sulphate to calcium carbonate is 3 to 1, representing 10wt%-80wt% of the weight of sediment agent containing silicon compound.